CN115066917A

CN115066917A - Communication method, device, readable storage medium and chip system

Info

Publication number: CN115066917A
Application number: CN202080042332.XA
Authority: CN
Inventors: 王琪; 牛朋伟; 刘文卓; 胡朝彬; 白帆; 雷显调
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-09-16
Also published as: WO2022141209A1

Abstract

A communication method, apparatus, readable storage medium and system on a chip for recovering voice traffic in the event of a false network device attack. The wireless communication device executes a pseudo network equipment identification strategy if the voice service execution of the first cell fails, and if the first network equipment to which the first cell belongs is identified as the pseudo network equipment: accessing a second cell, and attempting the voice service in the second cell. Because the identification of the pseudo network device is carried out under the condition that the first cell fails to execute the voice service, and the voice service is tried to be carried out in the second cell under the condition that the first network device is determined to be the pseudo network device, the voice service can be recovered under the condition of encountering the attack of the pseudo network device, and the connection of the voice service is realized.

Description

Communication method, device, readable storage medium and chip system

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method, an apparatus, a readable storage medium, and a chip system.

Background

Starting from a 3G standard, a bidirectional authentication operation is introduced in a 3rd generation partnership project (3 GPP) protocol, and before a terminal device completes bidirectional authentication with a base station and enters a connection state, the base station can only send a system message, a paging message and other messages to the terminal device, and cannot acquire related information of the terminal device.

Because the pseudo base station can not obtain the authentication information of the network side, the pseudo base station can not complete the bidirectional authentication with the terminal equipment. Therefore, in the existing network, in order to obtain the relevant information of the terminal device, the pseudo base station generally induces the terminal device in a Long Term Evolution (LTE) system or the like to perform cell reselection or redirection, so that the terminal device resides in the pseudo base station cell. When the terminal device resides in a cell of the pseudo base station, a Tracking Area Update (TAU) is initiated. The pseudo base station sends a TAU reject to the terminal equipment after inquiring the International Mobile Subscriber Identity (IMSI) of the user, or directly releases the Radio Resource Control (RRC) link connection of the user.

When the terminal device executes a Voice over Long Term Evolution (VoLTE) service on a camped pseudo base station, the VoLTE service may fail because the pseudo base station sends a TAU reject to the terminal device or directly releases a user RRC link connection.

For example, a user initiates a VoLTE service at a pseudo base station, and the pseudo base station sends a TAU reject to a terminal device or directly releases a user RRC link connection, which may cause a failure in initiating the VoLTE service, and displays a message of the failure in initiating a phone call on an interface of the terminal device, and the user actually experiences that the call is not connected.

Disclosure of Invention

The application provides a communication method, a communication device, a readable storage medium and a chip system, which are used for realizing the recovery of voice service under the condition of encountering pseudo base station attack.

In a first aspect, the present application provides a method for a wireless communication device, in which the wireless communication device fails to perform a voice service in a first cell; executing a pseudo network equipment identification strategy, and under the condition that the first network equipment to which the first cell belongs is identified to be pseudo network equipment: and accessing the second cell, and attempting to perform voice service in the second cell. Because the pseudo network device identification strategy is executed, when the voice service fails, whether the voice service is caused by the reason that the first network device is the pseudo network device or not can be judged. If the first network device is a pseudo network device, the voice service is not terminated because the voice service is executed in the first cell unsuccessfully, but the second cell is accessed to continue trying to perform the voice service, so that the recovery of the voice service can be realized under the condition of encountering the attack of the pseudo base station.

It should be understood that, in the solutions provided in the embodiments of the present application, the wireless communication apparatus may be a wireless communication device, or may be a part of a device in the wireless communication device, such as an integrated circuit product, such as a system chip or a communication chip. The wireless communication device may be a computer device that supports wireless communication functionality.

In particular, the wireless communication device may be a terminal, such as a smartphone, or a radio access network device, such as a base station. A system-on-chip may also be referred to as a system-on-chip (SoC), or simply as an SoC chip. The communication chip may include a baseband processing chip and a radio frequency processing chip. The baseband processing chip is sometimes also referred to as a modem (modem) or baseband chip. The rf processing chip is also sometimes referred to as a radio frequency transceiver (transceiver) or rf chip. In a physical implementation, part of the communication chip or all of the communication chip may be integrated inside the SoC chip. For example, the baseband processing chip is integrated in the SoC chip, and the radio frequency processing chip is not integrated with the SoC chip.

The wireless communication device performing voice service in the first cell may specifically include a variety of application scenarios, such as scenario one described below, in which the wireless communication device initiates voice service in the first cell. For example, in the following scenario two, the wireless communication device initiates a voice service in a cell other than the first cell, for example, a third cell, and switches to the first cell during the ongoing process of the voice service. These two scenarios are described separately below.

In one possible implementation manner, for scenario one above, the failure to perform the voice service in the first cell includes: a system message is received from a first network device to camp on to a first cell. First operation information input by a user is received in a first cell. The first operation information is used for indicating a user to initiate voice service. A first message is sent at the first cell based on the first operation information, the first message requesting a tracking area update or a location area update. And receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails. According to the scheme, in the scenario, the user needs to initiate a voice call of the calling party in the first cell, and based on the first operation information of the user (for example, the operation of dialing the user), the wireless communication device initiates a tracking area updating procedure or a location area updating procedure, and as a result, the updating fails. Because the tracking area or the location area fails to be updated, the voice service cannot be successfully performed in the first cell, i.e., the voice service fails.

Further, in a possible embodiment, when receiving the second message, the wireless communication device displays first display information through the display screen, where the first display information is used to indicate that the voice call corresponding to the voice service is in a standby state. Therefore, in the application, when the voice service fails, the information of the call failure cannot be displayed on the interface of the wireless communication device, so that the user cannot perceive the failure of the voice service execution at the moment, and a foundation can be laid for the subsequent voice service connection.

In one possible embodiment, in the case where the first network device is a pseudo network device, the wireless communication apparatus receives a system message from a second network device to which the second cell belongs; and sending a session invitation message at the second cell based on the first operation information, wherein the session invitation message is used for initiating the voice service. It can be seen that, in the present application, the voice service is not terminated based on the failure of performing the voice service in the first cell, but the voice service is continuously attempted in the accessed second cell when the first network device is a pseudo network device, so that the connection of the voice service can be realized.

In one possible implementation, in case the first network device is a pseudo network device: in a first time period, the information displayed by the wireless communication device through the display screen is first display information; wherein a starting point of the first period of time: earlier than a point in time when the second message is received; end point of the first period: later than the point in time when the session invite message was sent. That is to say, in the present application, when the voice service fails to be initiated in the first cell, the information of the voice service failure is not displayed, but the information that the voice call is in the state to be connected is continuously displayed on the display screen, and the user does not perceive that the voice service execution fails in the process. Until after the session invitation message is sent in the second cell, the information on the display screen can be switched according to whether the specific voice service is successful or not.

In one possible implementation, for scenario two above, the wireless communication device camps on the third cell and performs voice service in the third cell. And in the voice service execution process, the terminal resides in a first cell, and sends a first message in the first cell, wherein the first message is used for requesting tracking area update or location area update. And receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails. According to the scheme, in the scene, the user successfully initiates the voice service in the third cell and resides in the first cell in the voice service process, the wireless communication device initiates the tracking area updating process or the location area updating process in the first cell, and the result updating fails. Because the tracking area or the location area fails to be updated, the voice service cannot be performed in the first cell, i.e., the voice service fails.

Further, in a possible embodiment, when receiving the second message, the wireless communication device displays second display information through the display screen, where the second display information is used to indicate that the voice call corresponding to the voice service is in the connected state. Therefore, in the application, when the voice service fails, the information of the call failure cannot be displayed on the interface of the wireless communication device, so that the user cannot perceive the failure of the voice service execution at the moment, and a foundation can be laid for the subsequent voice service connection.

Further, in a possible embodiment, in a case where the first network device is a pseudo network device, the wireless communication apparatus receives a system message from a second network device to which the second cell belongs, thereby camping on the second cell. Receiving a first Radio Resource Control (RRC) reconfiguration request message, wherein the first RRC reconfiguration request message is used for requesting to configure a data resource bearer for the voice service; and sending a first RRC reconfiguration complete message in the second cell. Therefore, the data resource bearer can be configured for the voice service through the first RRC reconfiguration request message and the first RRC reconfiguration completion message, and a foundation is laid for continuously executing the voice service. In a possible implementation manner, the second network device may obtain the relevant information of the voice service from the network side, and then send the first RRC reconfiguration request message. Alternatively, the second network device may receive a message (such as a tracking area update request, a location area update request, or a service request message) from the wireless communication apparatus side before sending the first RRC reconfiguration request message, so as to obtain information related to the voice service, and then send the first RRC reconfiguration request message.

In one possible embodiment, in the case where the first network device is a pseudo network device: and in a second time period, the information displayed by the wireless communication device through the display screen is second display information, and the second display information is used for indicating that the voice call corresponding to the voice service is in a connection state. Wherein, the starting point of the second time period is: the time point when the voice call corresponding to the voice service initiated in the third cell is in the connection state; end point of the second period: later than the time of sending the first RRC reconfiguration request message. That is to say, in the present application, when the voice service fails to be initiated in the first cell, the information of the voice service failure is not displayed, but the information that the voice call is in the state to be connected is continuously displayed on the display screen, and the user does not perceive that the voice service execution fails in the process. Until after the session invitation message is sent in the second cell, the information on the display screen can be switched according to whether the specific voice service is successful or not.

In one possible embodiment, in scenario two, the wireless communication device may be the calling party or the called party. When the wireless communication device is a calling party, the wireless communication device can receive first operation information input by a user, wherein the first operation information is used for indicating to initiate a voice service; and sending a session invitation message at the third cell based on the first operation information, wherein the session invitation message is used for initiating the voice service. When it is the called party, the wireless communication device may receive a paging message at the third cell, the paging message for instructing the wireless communication device to initiate voice traffic.

In a possible implementation manner, for scenario one or scenario two, in case that the first network device to which the first cell belongs is identified as not a pseudo network device: the wireless communication device displays information on a display screen as third display information, and the third display information is used for indicating that the voice call corresponding to the voice service is in an ending state. In contrast, when the first network device is a pseudo network device, the information displayed by the wireless communication apparatus through the display screen is the first display information or the second display information, and both the first display information and the second display information indicate that the voice call is not ended, so that the user cannot feel the occurrence of the event that the voice service execution fails.

In a possible implementation manner, for the scenario one or the scenario two, the second message further includes first indication information, where the first indication information is used to instruct the wireless communication apparatus to perform an attach procedure. In case it is identified that the first network device to which the first cell belongs is not a fake network device: and executing the attaching process based on the first indication information. In contrast, when the first network device is a pseudo network device, the wireless communication apparatus does not perform an attach procedure but accesses the second cell and attempts to perform a voice service although the first indication information is received.

In a possible embodiment, for the scenario one or the scenario two, based on the first indication information, the performing an attach procedure includes: sending an attach request in the second cell; receiving an attachment acceptance sent by second network equipment to which a second cell belongs; the attach complete is sent in the second cell.

In a possible implementation manner, for the scenario one or the scenario two, the first indication information includes: one reject cause value of #9, #10, or # 40.

In a second aspect, a wireless communication device is provided, which includes a communication unit and a processing unit to perform any one of the embodiments of the communication method of any one of the first to third aspects. The communication unit is used to perform functions related to transmission and reception. Optionally, the communication unit comprises a receiving unit and a transmitting unit. In one design, the wireless communication device is a communication chip, the processing unit may be one or more processors or processor cores, and the communication unit may be an input-output circuit or port of the communication chip.

In another design, the communication unit may be a transmitter and a receiver, or the communication unit may be a transmitter and a receiver.

Optionally, the wireless communication apparatus further includes various modules operable to perform any of the embodiments of any of the communication methods of the first aspect.

In a third aspect, a wireless communications apparatus is provided that includes a processor and a memory. Optionally, the wireless communication device further comprises a transceiver, wherein the memory is used for storing a computer program or instructions, and the processor is used for calling and running the computer program or instructions from the memory, and when the processor executes the computer program or instructions in the memory, the wireless communication device is enabled to execute any implementation mode of any communication method of the first aspect.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integrated with the processor, or may be provided separately from the processor.

Optionally, the transceiver may include a transmitter (transmitter) and a receiver (receiver).

In a fourth aspect, a wireless communications apparatus is provided that includes a processor. The processor is coupled to the memory and is operable to perform the method of any of the first aspects, and any possible implementation of the first aspects. Optionally, the wireless communication apparatus further comprises a memory. Optionally, the wireless communication device further comprises a communication interface, the processor being coupled to the communication interface.

In one implementation, where the wireless communication device is a wireless communication device, the communication interface may be a transceiver, or an input/output interface. Alternatively, the transceiver may be a transmit-receive circuit. Alternatively, the input/output interface may be an input/output circuit.

In yet another implementation, when the wireless communication device is a chip or a system of chips, the communication interface may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or related circuit, etc. on the chip or system of chips. A processor may also be embodied as a processing circuit or a logic circuit.

In a fifth aspect, a system is provided, which includes the above wireless communication apparatus and a network device.

In a sixth aspect, there is provided a computer program product comprising: a computer program (also referred to as code, or instructions), which when executed, causes a computer to perform, or causes a computer to perform, a method of any of the possible implementations of the first aspect described above.

In a seventh aspect, a computer-readable storage medium is provided, which stores a computer program (which may also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method of any of the above-mentioned possible implementations of the first aspect, or causes the computer to perform the method of any of the above-mentioned implementations of the first aspect.

In an eighth aspect, a chip system is provided that may include a processor. The processor is coupled to the memory and is operable to perform any of the first aspects and the method of any of the possible implementations of any of the first aspects. Optionally, the chip system further comprises a memory. A memory for storing a computer program (also referred to as code, or instructions). A processor configured to call and run a computer program from the memory, so that the device on which the system-on-chip is installed performs any of the first aspects and the method of any of the possible implementations of any of the first aspects.

In a tenth aspect, there is provided a wireless communication apparatus comprising: interface circuitry and processing circuitry. The interface circuit may include an input circuit and an output circuit. The processing circuitry is configured to receive signals via the input circuitry and to transmit signals via the output circuitry such that the method of any of the first aspects, and any possible implementation of the first aspects, is implemented.

In a specific implementation process, the processing device may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the signal output by the output circuit may be output to and transmitted by a transmitter, for example and without limitation, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The embodiment of the present application does not limit the specific implementation manner of the processor and various circuits.

In one implementation, when the wireless communication apparatus is a wireless communication device, the wireless communication device may be a terminal such as a smart phone, or a wireless access network device such as a base station. The interface circuit may be a radio frequency processing chip in the wireless communication device, and the processing circuit may be a baseband processing chip in the wireless communication device.

In yet another implementation, the wireless communication apparatus may be a part of a device in a wireless communication device, such as an integrated circuit product such as a system chip or a communication chip. The interface circuit may be an input/output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip or system of chips, etc. The processing circuitry may be logic circuitry on the chip.

Drawings

FIG. 1 is a schematic diagram of a possible system architecture suitable for use in embodiments of the present application;

fig. 2 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 3a is a schematic flowchart of a communication method in scenario one according to the present application;

fig. 3b is a schematic flowchart of another communication method in scenario one according to the present application;

fig. 3c is a schematic flowchart of communication between a wireless communication apparatus and a first network device according to an embodiment of the present disclosure;

FIG. 3d is a flowchart illustrating a communication between the wireless communication device and a second network device;

fig. 4a is a schematic flowchart of a communication method in scenario two according to the embodiment of the present application;

fig. 4b is a schematic flowchart of another communication method in scenario two according to the embodiment of the present application;

fig. 5a is a flowchart illustrating a communication method in which a user of a wireless communication device serves as a calling party in scenario two;

fig. 5b is a flowchart illustrating another communication method in which the user of the wireless communication device serves as the calling party in scenario two;

fig. 6a is a schematic flow chart illustrating a communication method in which a user of a wireless communication device serves as a called party in scenario two;

fig. 6b is a flowchart illustrating another communication method in which the user of the wireless communication device serves as the called party in scenario two;

fig. 7 is a flowchart illustrating a communication between a wireless communication apparatus and a first network device according to an embodiment of the present application;

fig. 8 is a flowchart illustrating a communication between a wireless communication apparatus and a second network device according to an embodiment of the present disclosure;

fig. 9 is an interface diagram of a wireless communication device according to an embodiment of the present application;

fig. 10 is a schematic interface diagram of another wireless communication device according to an embodiment of the present application;

fig. 11a is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 11b is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The embodiment of the application can be applied to a wireless communication system. The wireless communication system may conform to a wireless communication standard of the third generation partnership project (3 GPP), but may also conform to other wireless communication standards such as the 802 series (e.g., 802.11, 802.15, or 802.20) wireless communication standards of the Institute of Electrical and Electronics Engineers (IEEE).

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA), General Packet Radio Service (GPRS), Enhanced Data rate Evolution (Enhanced Data for GSM Evolution (EDGE), Interim Standard95CDMA (IS-95 CDMA), Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA), CDMA2000, Time Division Synchronous Code Division Multiple Access (TD-SCDMA), LTE, Universal Mobile communication System (UMTS), world wide Mobile communication System (WiMAX), future communication systems, and WiMAX communication systems, and future communication systems such as WiMAX. The LTE includes time division duplex LTE (LTE tdd, or TD-LTE) and frequency division duplex LTE (LTE fdd). But also to communication systems for vehicle networks.

Among them, The TD-SCDMA and WCDMA systems are Universal Mobile Telecommunications System (UMTS) of 3G Mobile phone technology, and UMTS is promulgated by 3GPP (The3rd generation Partnership Project). The Network structure of UMTS can be divided into UMTS Terrestrial Radio Access Network (UTRAN) and Core Network (CN). In the UTRAN architecture, a Radio Access Network (RAN) is divided into a plurality of Radio Network Subsystems (RNSs), each RNS includes a Radio Network Controller (RNC) and one or more Node bs (base stations). The RNC is responsible for allocating, reconfiguring and releasing radio resources within the RNS, and the Node B is a Node having a radio transceiving function, supports an air interface with radio terminal equipment within its cell, and provides services for the cell. The Node bs communicate with the RNCs over an Iub interface, and the RNCs may be interconnected by an interface comprising a direct physical connection or a virtual network using any suitable transport network.

Without being specifically illustrated, 2G networks typically include GSM, CDMA, GPRS, EDGE, and IS-95 CDMA. The 3G network typically includes TD-SCDMA, WCDMA, and CDMA2000 upgrades. The 4G network includes LTE. The 5G network includes NRs. At present, the terminal device can also support various networks, and further roaming in various networks can be realized.

Fig. 1 is a schematic diagram of a possible system architecture applicable to the embodiment of the present application. The system architecture as shown in fig. 1 comprises a network device 102, a pseudo network device 103 and a terminal device 100. It should be understood that, in the embodiment of the present application, the number of network devices, the number of pseudo network devices, and the number of terminal devices in the system architecture are not limited, and the system architecture to which the embodiment of the present application is applied may include other devices, such as a core network device, a wireless relay device, a wireless backhaul device, and the like, besides the network devices, the pseudo network devices, and the terminal devices, and the embodiment of the present application is also not limited. In addition, the network device in the embodiment of the present application may integrate all functions into one independent physical device, or may distribute the functions over a plurality of independent physical devices, which is not limited to the embodiment of the present application. In addition, the terminal device in the embodiment of the present application may be connected to the network device in a wireless manner.

Terminal devices include devices that provide voice and/or data connectivity to a user and may include, for example, handheld devices having wireless connection capabilities or processing devices connected to wireless modems. The terminal device may communicate with a core network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The terminal device may include a User Equipment (UE), a wireless terminal device, a mobile terminal device, a device-to-device communication (D2D) terminal device, a V2X terminal device, a machine-to-machine/machine-type communication (M2M/MTC) terminal device, an internet of things (IoT) terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber state), a mobile station (mobile state), a remote station (remote state), an Access Point (AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), or a user equipment (user device), etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of information sensing devices include bar codes, Radio Frequency Identification (RFID), sensors, Global Positioning Systems (GPS), laser scanners, and the like. The terminal device may also be a terminal device in a vehicle network, which may be a vehicle, for example. The wireless communication device mentioned in the embodiment of the present application may be a terminal device or a chip provided in the terminal device.

Network devices, including, for example, Access Network (AN) devices, such as base stations (e.g., access points), may refer to devices in AN access network that communicate with wireless terminal devices over one or more cells over AN air interface. The base station may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The RSU may be a fixed infrastructure entity supporting the V2X application and may exchange messages with other entities supporting the V2X application. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB or eNB or e-NodeB) in an LTE system or an LTE-a (long term evolution-advanced), or may also include a fifth generation mobile communication technology (the 5) ^th generation, 5G) new wirelessA next generation node B (next generation node B, gNB) in the (new radio, NR) system may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a Cloud access network (Cloud RAN) system, which is not limited in the embodiments of the present application.

In the embodiments of the present application, a certain network element (e.g., an a network element) receives information from another network element (e.g., a B network element), which may mean that the a network element receives information directly from the B network element, or that the a network element receives information from the B network element via another network element (e.g., a C network element). When the network element a receives information from the network element B via the network element C, the network element C may transparently transmit the information, or may process the information, for example: and carrying the information in different messages for transmission or screening the information, and only sending the screened information to the network element A. Similarly, in the embodiments of the present application, the sending of the information by the network element a to the network element B may refer to the sending of the information by the network element a directly to the network element B, or may refer to the sending of the information by the network element a to the network element B via another network element (e.g., a network element C).

In the embodiments of the present application, the term "system" may be replaced with "network". The system architecture described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not form a limitation on the technical solution provided in the embodiment of the present application, and as a person having ordinary skill in the art knows along with the evolution of the network architecture, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Based on the above, fig. 2 exemplarily shows a flowchart of a communication method provided in an embodiment of the present application, and as shown in fig. 2, the method includes:

step S201, the wireless communication device fails to execute the voice service in the first cell;

step S202, when the wireless communication apparatus recognizes that the first network device to which the first cell belongs is a pseudo network device: and accessing the second cell, and attempting to perform voice service in the second cell.

In a possible implementation manner, in step S202, the wireless communication apparatus may execute a pseudo network device identification policy to identify whether the first network device is a pseudo network device, and in case that the first network device is identified as a pseudo network device: and accessing the second cell and carrying out voice service in the second cell.

It should be noted that the first cell is a cell under the first network device, the second cell is a cell under the second network device, and the first network device and the second network device are two different network devices.

In the above step S201, the wireless communication apparatus performing the voice service in the first cell may specifically include a plurality of application scenarios, for example, in the following scenario one, the wireless communication apparatus initiates the voice service in the first cell. For example, in the following scenario two, the wireless communication device initiates a voice service in a cell other than the first cell, for example, a third cell, and switches to the first cell during the ongoing process of the voice service. These two scenarios are described separately below.

Scenario one, a wireless communication device initiates a voice service in a first cell.

Based on the above, fig. 3a exemplarily shows a flowchart of a communication method in scenario one provided in the embodiment of the present application, and as shown in fig. 3a, the method includes:

in step S301, a user operates on a display screen of the wireless communication device to input first operation information.

In step S301, the operation performed by the user may be, for example, an operation of initiating a voice call to a called party. The first operation information is used for indicating the initiation of voice service.

Step S302, the wireless communication device displays first display information on a display screen based on the triggering of the first operation information input by the user, where the first display information is used to indicate that the voice call corresponding to the voice service is in a state to be connected.

In step S303, the wireless communication device transmits a first message in the first cell, where the first message is used to request a location update.

In this embodiment, the first message may be a tracking area update request message or a location area update request message. The tracking area update request message may be a track area update request, or may be written as TAU _ REQ. The location area update request message may be a location area update request or may be written as LAU _ REQ.

In one possible embodiment, when the wireless communication device is handed over from another network device to the first network device, and a module of a protocol stack of the wireless communication device prepares to initiate a service request message to establish a link, it finds that a system message received by the wireless communication device has changed, or it may find that the wireless communication device has camped from another cell (for example, a third cell) to the first cell. In this embodiment, the wireless communication apparatus may transmit the first message in step S303 described above.

Step S304, the wireless communication apparatus receives a second message from the first network device, where the second message is used to indicate that the location update fails and the voice service cannot be executed in the first cell.

The second message may be a tracking area update reject message or a location area update reject message. The tracking area update reject message may be a track area update rejected or written as TAU _ REJ. The location area update reject message may be location area update rejected or may be written as LAU _ REJ.

In a possible embodiment, the first indication information may be carried in the second message. The first indication information may be used to indicate a reject cause value. The rejection cause value may be of various possibilities, such as: #13, #15, #9, #10, and so on.

Wherein, when the reject reason value is #13, it indicates that the tracking area is not allowed to roam (Roaming not allowed in this tracking area). When the reject cause value is #15, it indicates that the tracking area has No suitable cell (No able cells in tracking area). When the reject cause value is #9, it indicates that the identity of the wireless communication apparatus does not exist in the network (UE identity registered be derived by the network). When the reject cause value is #10, implicit detach is indicated (Implicitly detached). When the reject cause value is #40, it indicates that No Evolved Packet System (EPS) bearer context is activated (No EPS bearer context activated).

Through the above steps S301 to S304, it can be determined that the wireless communication apparatus has failed to perform the voice service in the first cell. It is also understood that the scheme of steps S303 to S304 is one possible implementation of step S201.

Step S305, the wireless communication device executes a pseudo network equipment identification strategy to identify whether the first network equipment to which the first cell belongs is pseudo network equipment;

if yes, step S306 and step S307 may be executed; if not, step S308 may be executed;

step S306, the wireless communication device accesses the second cell and performs voice service in the second cell.

In the above-described step S305, the wireless communication apparatus may make a determination by executing the pseudo network device identification policy. The identification strategy of the pseudo network device is various:

for example, when the system message configuration is performed, the configurations of the legal network device and the pseudo network device may be different. When the first Network device performs system message configuration, a Public Land Mobile Network (PLMN) list is sent to the wireless communication apparatus, so as to indicate that the PLMN identifier of the wireless communication apparatus is any one of the PLMN list, and the wireless communication apparatus can establish an RRC connection with the first Network device. A PLMN list is also maintained in the wireless communication device indicating which PLMNs are not shared by a network device, such as PLMN1 of the mobile operator and PLMN2 of the telecommunications operator. After receiving the shared PLMN list issued by the first network device, the wireless communication apparatus may compare the shared PLMN list with a PLMN list maintained by the wireless communication apparatus, and if the shared PLMN list includes at least two PLMNs that cannot be shared by one network device, the wireless communication apparatus considers that the first network device is a pseudo network device. This is because: the pseudo network device will typically configure PLMN identities of multiple operators in a shared PLMN list to induce more wireless communication devices to establish RRC connections with itself.

For example, a legitimate network device may configure a different-frequency neighboring cell and/or a different-system neighboring cell, and a fake network device may not generally configure the different-frequency neighboring cell and the different-system neighboring cell.

For example, the residence threshold configured by the pseudo network device is usually lower, so that when the transmission power of the pseudo network device is lower, the wireless communication apparatus can determine that the residence condition is satisfied according to the residence threshold of the pseudo network device, so as to induce the wireless communication apparatus to reside, and the residence threshold configured by the legal network device is usually higher than the residence threshold configured by the pseudo network device.

For another example, the pseudo network device generally configures a global system for mobile communication (GSM) neighbor as a high reselection priority. This is because: GSM has no bidirectional authentication, and the wireless communication device has larger danger when staying in a GSM pseudo network equipment cell (the privacy of a user is revealed, and junk short messages are sent). The pseudo network device generally configures the GSM neighbor cell as a high reselection priority, which may make it easier for the wireless communication apparatus to reselect to the GSM pseudo network device cell. And legal network equipment in the existing network generally configures the GSM adjacent cell as a low reselection priority to avoid reselecting the GSM cell with a lower rate.

In the foregoing implementation manner, it may be determined whether the first network device is a pseudo network device by identifying whether the system message configuration of the first network device is similar to the system message configuration of the pseudo network device. That is, it can be determined whether the first network device is a pseudo network device according to the system message configuration condition of the first network device.

In a possible implementation manner, after step S306, after determining that the first network device is a pseudo network device, the wireless communication apparatus may add the cell information of the first cell into a restricted list, where the restricted list is used to instruct the wireless communication apparatus to prohibit the camping on the cell corresponding to the cell information recorded in the restricted list. The cell information of the first cell includes at least one of: a cell frequency point of a first cell; a cell frequency band of a first cell; a Physical Cell ID (PCI) of the first cell, an E-UTRA absolute radio frequency channel number (EARFCN) of the first cell, a Tracking Area (TA) identifier corresponding to the cell, and the like. It should be noted that the cell information of the first cell is not limited to the above, as long as the cell information of the first cell can be used to identify the first cell.

Step S307, after the voice call corresponding to the voice service is answered by the called party, the wireless communication device displays second display information on the display screen, where the second display information is used to indicate that the voice call corresponding to the voice service is in a connected state.

In a possible embodiment, it can also be understood that: and when the voice call corresponding to the voice service is answered by the called party, the wireless communication device updates the information displayed on the display screen from the first display information to the second display information.

In one possible embodiment, when the second message is received, the display screen of the wireless communication device displays first display information instead of the third display information, where the first display information is used to indicate that the voice call corresponding to the voice service is in the standby state.

In another possible embodiment, in the case that the first network device is a pseudo network device, the information displayed by the display screen of the wireless communication apparatus in the first time period is the first display information. Wherein a starting point of the first period of time: earlier than the point in time when the second message was received. For example, the starting point of the first time period may be a point of time when the first operation information input by the user is received. End point of the first period: later than the point in time when the session invite message was sent. That is, the wireless communication apparatus displays the first display information during the whole first time period, and even if the wireless communication apparatus resides in the pseudo network device during the first time period, the wireless communication apparatus does not display the information related to the end (or failure, interruption, etc.) of the voice service during the first time period.

Step S308, the wireless communication device determines that the voice service execution fails, and the wireless communication device displays third display information on the display screen, wherein the third display information is used for indicating that the voice call corresponding to the voice service is in an ending state.

In a possible embodiment, it can also be understood that: and when the wireless communication device determines that the voice service execution fails, the wireless communication device updates the information displayed on the display screen from the first display information to third display information.

In step S308, in a possible implementation, when the wireless communication apparatus receives the reject reason value from the first network device, a corresponding action may be performed according to the reject reason value. The reject cause value may be carried in the second message or may be carried in another message.

In one possible embodiment, the reject cause value may be carried in the second message. The rejection cause value may be of various possibilities, such as: #13, #15, #9, #10, or #40, and so on.

Wherein, when the reject reason value is #13, it indicates that the tracking area is not allowed to roam (Roaming not allowed in this tracking area). When the wireless communication device receives the reject cause value, the wireless communication device should store the current TAI in a "forbidden roaming tracking area" list and enter no registration (EMM-DEREGISTERED), or restrict service

(LIMITED-SERVICE) state, then the wireless communication device should perform PLMN selection. When the wireless communication device receives the reject cause value #13, the actions that the wireless communication device needs to perform may correspond to english:

the UE shall store the current TAI in the list of"forbidden tracking areas for roaming".Additionally,the UE shall enter the state EMM-DEREGISTERED.LIMITED-SERVICE or optionally EMM-DEREGISTERED.PLMN-SEARCH。

The UE shall perform a PLMN selection。

here, if the reject cause value is #15, it indicates that the tracking area has No suitable cell (No able cells in tracking area). When the wireless communication device receives the reject cause value, the wireless communication device should store the current TAI in a "roaming tracking area forbidden" list and enter an EMM-DEREGISTERED, or LIMITED SERVICE (LIMITED-SERVICE) state, and then the wireless communication device should search for a suitable cell in another tracking area or another location area. When the wireless communication device receives the reject cause value #15, the actions that the wireless communication device needs to perform may correspond to english:

store the current TAI in the list of"forbidden tracking areas for roaming"and enter the state EMM-DEREGISTERED.LIMITED-SERVICE。

the UE shall search for a suitable cell in another tracking area or in another location area。

if the reject cause value is #9, it indicates that the identity of the wireless communication apparatus does not exist in the network (UE identity corrected by the network). When the wireless communication device receives the reject cause value #9, then: the attach procedure needs to be performed subsequently. When the wireless communication device receives the reject cause value #9, the actions that the wireless communication device needs to perform may correspond to english:

UE shall subsequently,automatically initiate the attach procedure。

here, when the reject cause value is #10, implicit detach (implicit detached) is indicated. When the wireless communication device receives the reject cause value #10, then: if the denied request is not to initiate a Packet Data Network (PDN) connection for the emergency bearer service, the wireless communication device should perform a new attach procedure. When the wireless communication device receives the reject cause value #10, the actions that the wireless communication device needs to perform may correspond to english:

If the rejected request was not for initiating a PDN connection for emergency bearer services,the UE shall then perform a new attach procedure。

wherein, when the reject cause value is #40, it indicates that No Evolved Packet System (EPS) bearer context is activated (No EPS bearer context activated). When the wireless communication device receives the reject cause value #40, then: the wireless communication device should locally deactivate all EPS bearer contexts (if any) and enter EMM state-deregister, normal-service, the wireless communication device should perform a new attach procedure. When the wireless communication device receives the reject cause value #40, the actions that the wireless communication device needs to perform may correspond to english:

The UE shall deactivate all the EPS bearer contexts locally,if any,and shall enter the state EMM-DEREGISTERED.NORMAL-SERVICE.The UE shall perform a new attach procedure。

as can be seen from the above steps S302 and S307, after the user performs the voice service, such as initiating the voice call, on the wireless communication device until the voice call is answered by the called party, the information that the voice call corresponding to the voice service is in the ready-to-connect state is displayed on the display screen of the wireless communication device, and until the voice call is connected in the second cell, the information that the voice call corresponding to the voice service is in the ready-to-connect state is displayed on the display screen.

It can be seen that even if the wireless communication apparatus resides in a pseudo network device (first network device), in the case where the first cell fails to perform the voice service, the wireless communication apparatus does not display information indicating that the voice service failed on the display screen, i.e., does not feel to the user that the voice service is interrupted, and thus the user does not have to initiate a voice call again in the case where the first cell fails to perform the voice service, so that the number of operations of the user can be reduced.

The related method flow of the wireless communication device in the embodiment of the present application may be executed by a processing module in the wireless communication device, such as step S303, step S304, step S305, step S306, and so on. The processing module in the embodiment of the present application may be a module in a protocol stack of a wireless communication apparatus. The detailed description of the processing module can refer to the description of the entity apparatus in the following, and will not be described first.

Based on the above, fig. 3b illustrates a flow chart of a communication method of scenario two, and fig. 3b is a possible implementation provided on the basis of fig. 3 a. The main difference in fig. 3b compared to fig. 3a is that:

in step S304, the rejection cause value is #9, #10, #40, or the like. Based on the cause value, step S308 in fig. 3a can be realized by step S3081, step S3082, step S3083, step S3084 and step S3085 in fig. 3 b.

In step S3081, the wireless communication device determines that the voice service has failed to be performed, and the wireless communication device displays third display information on the display screen.

In step S3082, the wireless communication apparatus receives a system message sent by the second network device.

In step S3083, the wireless communication apparatus transmits an attach request message to the second network device.

The attach request message in the embodiment of the present application may be an attach request.

In step S3084, the second network device transmits an attach accept message to the wireless communication apparatus after receiving the attach request message.

The attach accept message in the embodiment of the present application may be connection establishment attach accept.

In step S3085, the wireless communication apparatus transmits an attach complete message to the second network device.

The attach complete message in the embodiment of the present application may be attach complete.

It can be seen that, no matter what the reject reason value received by the wireless communication apparatus in the step S304 is, for example, the reason value indicating the wireless communication apparatus to re-attach is #9, #10, or #40, in the embodiment of the present application, when the first network device is determined to be a pseudo network device, the attachment procedure is not executed according to the reason value, but the second cell is accessed to initiate the service request again so as to continue the voice service. However, when the first network device is not a pseudo network device, the wireless communication apparatus will perform the corresponding procedure according to the specific reject reason value, for example, when the reject reason value is #9, #10, or #40, etc., which indicates the reason value for the wireless communication apparatus to re-attach, and when the first network device is not a pseudo network device, the wireless communication apparatus performs the attach procedure through steps S3081 to S3085.

Based on the content shown in fig. 3a and fig. 3b, fig. 3c exemplarily shows a flowchart of communication between the wireless communication apparatus and the first network device, and the method step shown in fig. 3c may be in one possible implementation of the foregoing step S201, as shown in fig. 3c, the method includes:

in step S401, the wireless communication apparatus receives a system message from the first network device.

In this embodiment, the system message in step S401 may be system information. For example, the system message may be received by receiving a broadcast message.

In the embodiment of the present application, the system message may include information such as a frequency point of a residential cell, a frequency band, a Public Land Mobile Network (PLMN), an Identification (ID) of a physical cell, a bandwidth, a Discontinuous Reception (DRX) period, and the like.

The wireless communication apparatus may camp on the first cell, through step S401. In a possible embodiment, step S303 is performed after step S401.

In step S303, the wireless communication apparatus may transmit a first message to the first network device. The first message may be a tracking area update request message or a location area update request message.

In a possible embodiment, establishing the RRC link after step S303 may specifically be implemented by the following steps:

step S402 is for the wireless communication apparatus to transmit a Radio Resource Control (RRC) connection establishment request message to the first network device.

The RRC Connection setup request message in the embodiment of the present application may be a Connection setup request RRC Connection setup request.

The RRC connection setup request message may also have other names, for example, in a possible embodiment, the RRC connection setup request message under LTE may also be written as LTE RRC connection setup request. The LTE is short for Long Term Evolution (LTE). For another example, the RRC connection setup request message under NR may also be written as an NR RRC connection setup request. Where, NR is an abbreviation of New Radio (NR).

In step S403, after receiving the RRC connection establishment request message, the first network device sends an RRC connection establishment response message to the wireless communication apparatus.

The RRC Connection setup response message in the embodiment of the present application may be an RRC Connection setup.

The RRC connection setup response message may also have other names, for example, in one possible embodiment, the RRC connection setup response under LTE may also be written as LTE RRC connection setup. For another example, the RRC connection setup response message under NR may also be written as an NR RRC connection setup.

Step S404, the wireless communication apparatus transmits an RRC connection setup complete message to the first network device.

The RRC Connection setup complete message in the embodiment of the present application may be an RRC Connection setup complete.

The RRC connection setup complete message may also have other names, for example, in a possible embodiment, the RRC connection setup complete message under LTE may also be written as LTE RRC connection setup complete. For another example, in a possible embodiment, the RRC connection setup complete message under NR may also be written as NR RRC connection setup complete.

In a possible embodiment, in the case that the first network device is a pseudo network device, the pseudo network device does not trigger the subsequent authentication operation after the RRC connection setup is completed, but directly sends an identity identification request message (identity _ REQ) to the wireless communication apparatus to request to acquire the IMSI of the wireless communication apparatus. In such an embodiment, step S406 and step S407 may be included after step S405.

Step S405, the first network device sends an identity Identification request message to the wireless communication apparatus to query an International Mobile Subscriber Identity (IMSI).

The identification request message may be an identity request.

Step S406, the wireless communication device returns an identification response message to the first network device, where the identification response message may carry the IMSI of the wireless communication device.

The identification response message may be an identity response.

Step S304, the first network device issues the second message.

In one possible embodiment, the pseudo network device sends the second message to the wireless communication device after querying the IMSI of the wireless communication device. The second message may be a tracking area update reject message or a location area update reject message.

The second message may carry the reject cause value described above.

In step S407, the first network device sends an RRC connection release message to the wireless communication apparatus to release the RRC connection with the terminal device.

The RRC connection RELEASE message in this embodiment may be RRC _ connection _ RELEASE, or may be written as RRC _ con _ RELEASE.

As can be seen from the above-mentioned scheme shown in fig. 3c, when the first network device initiates the voice service, the radio communication apparatus cannot successfully initiate the voice service in the first cell because the RRC link between the radio communication apparatus and the first network device is released, and may also be understood as a failure in performing the voice service in the first cell.

Based on the contents shown in fig. 3a, fig. 3b and fig. 3c, fig. 3d schematically shows a flowchart of communication between a wireless communication apparatus and a second network device, and the method step shown in fig. 3d may be one possible implementation of the foregoing step S306, as shown in fig. 3d, the method includes:

step S3061, the wireless communication apparatus receives a system message sent by the second network device.

In this embodiment, the system message in step S3061 may refer to the related description of the system message in step S401, which is not described herein again.

Step S3062, the wireless communication apparatus sends a third message to the second network device.

The third message in step S3062 may be a tracking area update request message, a location area update request message or a service request message.

In this embodiment of the present application, the tracking area update request message may be a track area update request, or may be written as TAU _ REQ. The location area update request message may be a location area update request or may be written as LAU _ REQ. The service request message may be a server request or may be written as a SER _ REQ.

When the third message is a service request message, the service request in step S3062 may be used to request the execution of the voice service.

Step S3063, the wireless communication apparatus sends a Radio Resource Control (RRC) connection establishment request message to the second network device.

The RRC connection setup request message in the embodiment of the present application may be an RRC setup request.

In step S3064, the second network device sends an RRC connection setup response message to the wireless communication apparatus after receiving the RRC connection setup request message.

The RRC connection setup response message in the embodiment of the present application may be a connection setup RRC setup.

Step S3065, the wireless communication apparatus sends an RRC connection setup complete message to the second network device.

Step S3066, the second network device sends a fourth message to the wireless communication apparatus.

The fourth message in step S3066 may be a tracking area update accept message, a location area update accept message or a service accept message.

In this embodiment of the present application, the tracking area update accept message may be a track area update accept. The location area update accept message may be a location area update accept. The service accept message may be a server accept.

Step S3067, the wireless communication apparatus sends a fifth message to the second network device.

The fifth message in step S3067 may be a tracking area update complete message or a location area update complete message.

In this embodiment of the present application, the tracking area update completion message may be a track area update complete. The location area update completion message may be a location area update complete.

It can be understood that, in the embodiment of the present application, there may be a corresponding relationship among the third message, the fourth message, and the fifth message, for example, when the third message is a tracking area update request message, the corresponding fourth message may be a tracking area update accept message, and the fifth message may be a tracking area update complete message. For another example, when the third message is a location area update request message, the corresponding fourth message may be a location area update accept message, and the fifth message may be a location area update complete message. For another example, when the third message is a service new request message, the corresponding fourth message may be a service accept message, in which case the fifth message may not be provided.

At step S3068, the wireless communication device sends a session invite message at the second cell.

In step S3068, the wireless communication apparatus may send a session invite message to the second network device.

The session invite message in the embodiment of the present application may be invite, such as IMS _ SIP _ outputting (SIP _ invite). The session invite message may be used to initiate a voice service.

In this embodiment, when the second network device is of a 5G network system, the voice service may serve a New wireless voice scheme (voice on New Radio, VoNR). When the second network device is in the 5G network System, the voice scheme may also be an Evolved Packet System Fallback (EPSFB) service. When the second network device is a 4G network system, the voice service may be a voice on long term evolution (VoLTE) service. When the second network device is a 2G or 3G network system, the voice service may be a voice service of a Circuit Switch (CS).

In step S3069, the wireless communication apparatus receives a session invitation message response returned by the second network device.

In this embodiment, the session invite message response may be 100 trying.

Step S30610, the second network device sends a bearer establishment request to the wireless communication apparatus.

In this embodiment, the bearer establishment request in step S3068 may be an activate truncated eps bearer context request.

Step S30611, the wireless communication apparatus sends a bearer establishment acceptance to the second network device.

In this embodiment, the bearer establishment acceptance in step S3069 may be an activate truncated eps bearer context accept.

In step S30611, the wireless communication apparatus performs media negotiation with the second network device or the like.

Some information of the voice service, such as information about the encoding form of data transmitted during the voice call, may be negotiated through step S30611.

Step S30613, the second network device issues a ring message to the wireless communication apparatus.

The Ringing message may be 180 Ringing.

When the ring message is sent down, the wireless communication device acts as the calling party and the user of the wireless communication device can hear a beep that can indicate that the called party's wireless communication device has displayed the incoming call, and so on.

Step S30614, after the called party answers the voice call corresponding to the voice service, the user of the wireless communication device can make a voice call with the called party.

The following steps S30615 to S30619 describe an example of a possible call drop procedure. The voice call can be hung up by the calling party or hung up by the called party, and the hanging up of the calling party is taken as an example for showing:

in step S30615, the wireless communication apparatus receives an operation of the user (calling party) to hang up the call, and transmits a call hang up message to the second network device based on the operation.

As can be seen from the above example, in the embodiment of the present application, the call drop message is used to indicate the end of the voice service.

S30615 the call drop message may also be a bye message.

At step S30616, the second network device sends a200 OK message to the wireless communication apparatus.

Step S30617, the second network device sends a bearer deactivation request to the wireless communication apparatus.

The bearer deactivation request may be for requesting deactivation of a bearer established based on the voice service.

Step S30618, the wireless communication apparatus sends a bearer deactivation completion to the second network device.

The bearer deactivation completion may be used to indicate that the bearer established based on the voice service has been deactivated.

Step S30619, the second network device sends an RRC connection release message to the wireless communication apparatus.

The RRC connection release message may also be referred to as RRC connection release.

It can be seen that no matter what the reject reason value carried by the second message in the step S304 is, for example, the reject reason value is #9, #10, and so on, in this embodiment of the application, when it is determined that the first network device is the pseudo network device, the attach procedure is not executed according to the reason value, but the second cell is accessed to initiate the service request again after the tracking area update and the location area update are executed, so as to continue the voice service.

The scheme of the scenario one is described with fig. 3a to fig. 3d, it should be noted that in the scenario one, the first network device and the second network device may belong to different network systems. For example, the first network device may be a 4G network system, and the second network device may be a 4G network system, or may be another network system such as a 3G or 2G network system, in this case, when the wireless communication apparatus initiates a voice service in the first network device of the 4G system, the wireless communication apparatus may fall back to the 2G or 3G for performing the voice service. In another possible implementation, for example, the first network device may be a 5G network system, and the second network device may be a 5G network system, and may also be another 4G network system, in this case, when the wireless communication apparatus starts a voice service in the first network device of the 5G system, the wireless communication apparatus may fall back to the 4G for performing the voice service.

Further, in a possible implementation manner, the call may also be failed in the second cell due to the voice service for some reason, in this case, the identification policy of the pseudo network device may also be continuously executed, and when it is identified that the network device to which the second cell belongs is also a pseudo network device, the handover may also be continuously performed to another cell, for example, the fourth cell performs the voice call service again. The embodiment of the present application may not be limited to the cell in which the wireless communication apparatus resides in several pseudo network devices. In the solution provided in the embodiment of the present application, after the wireless communication apparatus fails to perform the voice call, the identification policy of the pseudo network device may be executed, and then the information displayed on the wireless communication apparatus and the subsequent operations may be determined in combination with the identification result. For the related operations, reference may be made to descriptions of the first cell and the second cell, which are not described in detail.

As can be seen from the solutions provided in fig. 3a to 3d, in the scenario one, when the user initiates the voice call on the pseudo network device, although the voice service is failed to be executed on the pseudo network device, the information of the voice call failure is not displayed on the display screen of the wireless communication apparatus, but after the user initiates the voice call, the information that the voice call corresponding to the voice service is in the to-be-connected state is displayed on the display screen of the wireless communication apparatus all the time until the voice call is connected in the second cell, and the information that the voice call corresponding to the voice service is in the connected state is displayed on the display screen. Or after the user initiates the voice call operation, the information that the voice call corresponding to the voice service is in the standby state is displayed on the display screen of the wireless communication device all the time until the voice call is rejected in the second cell, and the information that the voice call corresponding to the voice service is in the non-connected state is displayed on the display screen. That is, for the user, the interruption of the voice service due to the residing of the pseudo network device is not sensed, so that the user does not need to initiate the voice call again under the condition that the voice service executed by the first cell fails, and the operation times of the user can be reduced.

In scenario two, the wireless communication device initiates a voice service in a cell other than the first cell, such as a third cell, and switches to the first cell during the ongoing process of the voice service.

The third cell is a cell under the third network device. The third network device and the first network device are two different network devices. The third network device and the second network device may be the same network device or different network devices. The third cell and the second cell may be the same cell or different cells.

Based on the above, fig. 4a illustrates a flow chart of a communication method of scenario two, as shown in fig. 4a, the method includes:

step S501, the wireless communication apparatus performs a voice service in the third cell. And displaying second display information on a display screen of the wireless communication device, wherein the second display information is used for indicating that the voice call corresponding to the voice service is in a connection state.

In step S501, the wireless communication device may be a calling party or a called party. The following details regarding the communication flow between the wireless communication apparatus and the third network device will not be introduced here.

Step S502, the wireless communication device resides in the first cell, and the voice service in the first cell fails.

Step S502 may be understood as one possible implementation of step S201 described above.

In a possible embodiment, the wireless communication apparatus may receive first indication information from the first network device, and the first indication information may be a rejection cause value, such as #13, #15, #9, #10, or #40 mentioned in the foregoing.

Step S503, the wireless communication device executes a pseudo network device identification strategy to identify whether the first network device to which the first cell belongs is a pseudo network device;

if yes, step S504 may be executed; if not, step S505 may be executed;

step S504, the wireless communication device accesses the second cell and performs voice service in the second cell.

The policy for identifying the pseudo network device can be referred to the foregoing, and is not described herein again.

In step S504, after the voice service is successfully connected to the second cell, the user can continue to perform voice communication with the other party through the wireless communication device. From the time the wireless communication device performs the voice service in the first cell, displaying the second display information on the display screen until step S504, the wireless communication device displays the second display information on the display screen. When the voice service is successfully performed in the second cell in step S504, i.e., after the voice service is successfully continued in the second cell, the second display information is still displayed on the display screen of the wireless communication apparatus. In yet another possible embodiment, when the voice service is successfully performed in the second cell and the subsequent voice service is hung up by one of the users, the wireless communication device may update the information on the display screen from the second display information to the fourth display information, and the fourth display information shows the interface after the user hangs up the voice call.

In one possible embodiment, when the second message is received, the display screen of the wireless communication device displays second display information instead of the third display information, the second display information indicating that the voice call corresponding to the voice service is in the connected state.

In another possible embodiment, when the first network device is a pseudo network device, information displayed on the display screen of the wireless communication apparatus in the second time period is second display information, and the second display information is used to indicate that the voice call corresponding to the voice service is in a connected state. Wherein, the starting point of the second time period is: and the time point that the voice call corresponding to the voice service initiated by the third cell is in the connection state. End point of the second period: later than the time of sending the first RRC reconfiguration request message. That is, the wireless communication apparatus displays the second display information throughout the second period of time, and even if the wireless communication apparatus resides in the pseudo network device during the first period of time, the wireless communication apparatus does not display the information related to the end (or failure, interruption, etc.) of the voice service during the second period of time.

In step S505, the wireless communication device determines that the voice service execution has failed, and the wireless communication device displays third display information on the display screen.

In a possible embodiment, the scheme in step S505 may also be: and when the wireless communication device determines that the voice service execution fails, the wireless communication device updates the information displayed on the display screen from the second display information to third display information.

In step S308, in a possible implementation, when the wireless communication apparatus receives the reject reason value from the first network device, a corresponding action may be performed according to the reject reason value. See the aforementioned step S308.

Through the scheme, when the user executes the voice service in other cells and the pseudo network equipment resides in the voice service process, the wireless communication device can continue the voice service after being switched to the third network equipment. In the process, from the beginning of the voice service execution by the user, the second display information is displayed on the display screen of the wireless communication device, even if the wireless communication device resides in the pseudo network equipment and causes the voice service execution failure, in the case that the first network equipment is the pseudo network equipment, the wireless communication device does not display the information for indicating the voice service failure on the display screen, but continues to display the information for indicating that the voice call corresponding to the voice service is in the connected state until the voice service is successfully connected in the second cell. For the user, the user does not see the information of the voice service failure on the display screen of the wireless communication device, so that the condition of the voice service failure caused by the fact that the wireless communication device resides in the pseudo base station can not be sensed, the user does not need to initiate the voice call again under the condition that the voice service failure is executed in the first cell, and the operation times of the user can be reduced.

Based on the above, fig. 4b illustrates a flow chart of a communication method of scenario two, and fig. 4b is a possible implementation provided on the basis of fig. 4 a. The main difference in fig. 4b compared to fig. 4a is that:

in step S502, the rejection cause value is #9, #10, #40, or the like. Based on the cause value, step S505 in fig. 4a can be realized by step S5051, step S5052, step S5053, step S5054, and step S5055 in fig. 4 b.

In step S5051, the wireless communication device determines that the execution of the voice service has failed, and the wireless communication device displays third display information on the display screen.

In step S5052, the wireless communication apparatus receives a system message delivered by the second network device.

In step S5053, the wireless communication apparatus transmits an attach request message to the second network device.

In step S5054, the second network device, after receiving the attach request message, transmits an attach accept message to the wireless communication apparatus.

In step S5055, the wireless communication apparatus transmits an attach complete message to the second network device.

It can be seen that, no matter what the reject reason value received by the wireless communication apparatus in the step S502 is, for example, the reason value indicating the wireless communication apparatus to re-attach is #9, #10, or #40, in the embodiment of the present application, when the first network device is determined to be a pseudo network device, the attachment procedure is not executed according to the reason value, but the second cell is accessed to initiate the service request again so as to continue the voice service. If the first network device is not a pseudo network device, the wireless communication apparatus will execute the corresponding procedure according to the specific reject reason value, for example, if the reject reason value is #9, #10, or #40, which indicates the reason value for re-attaching the wireless communication apparatus, and if the first network device is not a pseudo network device, the attachment procedure is executed through steps S5051 to S5055.

In scenario two, the user of the wireless communication device may act as a caller or a callee. Fig. 5a and 5b below illustrate a flow chart of a communication method in which the user of the wireless communication device serves as the calling party in scenario two, and fig. 6a and 6b illustrate a flow chart of a communication method in which the user of the wireless communication device serves as the called party in scenario two. The following description is made with reference to the accompanying drawings, respectively.

Based on the above, fig. 5a illustrates a flowchart of communication between a wireless communication apparatus and a third network device, and the method steps shown in fig. 5a may be implemented in one possible implementation of the foregoing step S501, as shown in fig. 5a, the method includes:

in step S701, a user operates on a display screen of the wireless communication apparatus to input first operation information to the wireless communication apparatus.

In step S701, the operation performed by the user may be, for example, an operation of initiating a voice call to a called party. The first operation information may be used to instruct a user to initiate a voice service.

Before step S701, the method may further include: the wireless communication apparatus receives a system message transmitted by a third network device. In the embodiment of the present application, the system message may refer to the foregoing related description about the system message, and details are not described herein again.

Step S702, the wireless communication apparatus displays first display information on a display screen based on the triggering of the first operation information, where the first display information is used to indicate that the voice call corresponding to the voice service is in a state to be connected.

In step S703, the wireless communication apparatus resides in a third cell. The wireless communication device dials a voice call to the called party based on the triggering of the first operation information, and performs a voice service in the third cell after the voice call is connected by the called party.

Step S703 may be performed by a processing module of the wireless communication apparatus.

Step S704, after the voice call is connected by the called party, the wireless communication device updates the information displayed on the display screen from the first display information to the second display information, where the second display information is used to indicate that the voice call corresponding to the voice service is in a connected state.

One possible implementation of step S703 is illustrated in fig. 5b, as shown in fig. 5 b:

in step S7031, the wireless communication apparatus transmits a service request message in the third cell.

In one possible embodiment, a service request message is used to request establishment of an RRC link. Optionally, the link with the network device can also be initiated by a tracking area location update request or a location area update request.

Step S7032 is a step in which the Radio communication apparatus transmits a Radio Resource Control (RRC) connection establishment request message to the third network device.

In step S7033, the third network device sends an RRC connection setup response message to the radio communication apparatus after receiving the RRC connection setup request message.

In step S7034, the radio communication apparatus transmits an RRC connection setup complete message to the third network device.

In step S7035, the wireless communication apparatus may send a session invite message to the third small network device.

In this embodiment of the application, when the third network device is in a 5G network system, the voice service may be served by a New wireless voice scheme (voice on New Radio, VoNR). When the second network device is in the 5G network system, the voice scheme may also serve the EPSFB. When the third network device is a 4G network system, the voice service may be a voice over long term evolution (VoLTE) service. When the third network device is a 2G or 3G network system, the voice service may be a voice service of a Circuit Switch (CS).

In step S7036, the wireless communication apparatus receives a session invitation message response returned by the third network device.

In this embodiment, the session invite message response may be 100 trying.

Step S7037, the third network device sends a bearer establishment request to the wireless communication apparatus.

In this embodiment of the application, the bearer establishment request in step S7037 may be an activate truncated eps bearer context request.

Step S7038, the wireless communication apparatus sends a bearer establishment acceptance to the third network device.

In this embodiment of the application, the bearer establishment acceptance in step S7038 may be activated truncated eps bearer context accept.

In step S7039, the wireless communication apparatus performs media negotiation with a third network device or the like.

Some information of the voice service, such as information of the coding form of the data transmitted during the voice call, may be negotiated through step S7039.

In step S70310, the third network device issues a ring message to the wireless communication apparatus.

The Ringing message may be 180 Ringing.

Step S70311, after the called party user answers the voice call corresponding to the voice service, the user of the wireless communication device can perform a voice call with the called party.

For the description of each signaling in fig. 5b, reference may be made to the contents of the other previous figures, which are not described herein again.

Based on the above, fig. 6a illustrates a flowchart of communication between a wireless communication apparatus and a third network device, and the method steps shown in fig. 6a may be in another possible implementation of the foregoing step S501, as shown in fig. 6a, the method includes:

in step S801, the wireless communication apparatus camps on a third cell and receives a paging message. The paging message is used to indicate to the wireless communication device that the other wireless communication device has initiated voice traffic to it. The wireless communication device is the called party.

Step S802, the wireless communication apparatus establishes a link with the third network device based on the paging message.

Step S803, based on the received paging message, the wireless communication apparatus displays first display information on the display screen, where the first display information is used to indicate that the voice call corresponding to the voice service is in a state to be connected.

Step S804, the user inputs second operation information, where the second operation information is used to instruct the user to connect the voice call. Alternatively, the user may perform an operation of connecting the voice call.

In step S805, the wireless communication device updates the information displayed on the display screen from the first display information to second display information based on the second operation information input by the user, where the second display information is used to indicate that the voice call corresponding to the voice service is in a connected state.

In step S806, the wireless communication device performs a voice service in the third cell based on the trigger of the operation of the user to connect the voice call.

One possible implementation of step S802 is exemplarily illustrated in fig. 6b by steps S8021 to S80210, and as illustrated in fig. 6b, the method comprises:

in step S800, the wireless communication apparatus receives a system message of a third network device.

The wireless communication apparatus resides in the third cell, via step S800.

In step S801, the wireless communication apparatus receives a paging message. The paging message is used to indicate to the wireless communication device that the other wireless communication device has initiated voice traffic to it. The wireless communication device is the called party.

In step S8021, the wireless communication apparatus transmits a service request message in the third cell.

Step S8022 is a step in which the wireless communication apparatus transmits a Radio Resource Control (RRC) connection establishment request message to the third network device.

In step S8023, after receiving the RRC connection establishment request message, the third network device sends an RRC connection establishment response message to the wireless communication apparatus.

In step S8024, the wireless communication apparatus transmits an RRC connection setup complete message to the third network device.

In step S8025, the wireless communication apparatus transmits a session invitation message in the third cell.

In step S8025, the wireless communication apparatus may transmit a session invitation message to the third network device.

The session invite message in the embodiment of the present application may be IMS _ SIP _ outputting (SIP _ invite). The session invite message may be used to initiate a voice service.

In step S8026, the wireless communication apparatus receives a session invitation message response returned by the third network device.

In this embodiment, the session invite message response may be 100 trying.

In step S8027, the third network device sends a bearer establishment request to the wireless communication apparatus.

In this embodiment, the bearer establishment request in step S3068 may be an active determined eps bearer context request.

Step S8028, the wireless communication apparatus sends a bearer establishment acceptance to the third network device.

In this embodiment of the present application, the bearer establishment acceptance in step S8028 may be an activated reduced eps bearer context accept.

In step S8029, the wireless communication apparatus performs media negotiation with a third network device or the like.

Some information of the voice service, such as information of the coding form of the data transmitted during the voice call, may be negotiated through step S8029.

In step S80210, the wireless communication apparatus transmits a ring message to the third network device.

The Ringing message may be 180 Ringing.

After sending the ringing message, the wireless communication device serves as a called party, and a user of the wireless communication device (called party) can hear the incoming call interface (i.e., the display screen of the wireless communication device displays the first display information). When the wireless communication device has the incoming call ring tone, the called party can also hear the incoming call ring tone. And after the wireless communication device sends a ringing message, the user of the calling party may hear a beep on his wireless communication device, which may indicate that the wireless communication device of the called party has displayed the incoming call, and so on.

Step S804, the user inputs second operation information, where the second operation information is used to instruct the user to connect the voice call. Or the user may be said to perform an operation of putting through the voice call. Step S806 may be performed thereafter.

Based on the contents shown in fig. 4a to fig. 6b, fig. 7 exemplarily shows a flowchart of communication between a wireless communication apparatus and a first network device, and the method step shown in fig. 7 may be in one possible implementation of the foregoing step S502, as shown in fig. 7, the method includes:

in step S5021, the wireless communication device receives a system message from the first network device.

In this embodiment of the application, the system message may refer to step S401, which is not described again.

The wireless communication apparatus may camp on the first cell, through step S5021.

In step S5022, the wireless communication apparatus may transmit a first message to a first network device.

The first message may be a tracking area update request message or a location area update request message.

Step S5023, the wireless communication apparatus sends a Radio Resource Control (RRC) connection establishment request message to the first network device.

Step S5024, after receiving the RRC connection establishment request message, the first network device sends an RRC connection establishment response message to the wireless communication apparatus.

The RRC Connection setup response message in the embodiment of the present application may be Connection setup RRC Connection setup.

Step S5025, the wireless communication apparatus sends an RRC connection setup complete message to the first network device.

In a possible embodiment, in the case that the first network device is a pseudo network device, the pseudo network device does not trigger the subsequent authentication operation after the RRC connection setup is completed, but directly sends an identity identification request message (identity _ REQ) to the wireless communication apparatus to request to acquire the IMSI of the wireless communication apparatus. In such an embodiment, step S5026 and step S5027 may be included after step S405.

Step S5026, the first network device sends an identity request message to the wireless communication apparatus to query the IMSI.

The identification request message may be an identity request.

Step S5027, the wireless communications apparatus returns an identification response message to the first network device, where the identification response message may carry the IMSI of the wireless communications apparatus.

The identification response message may be an identity response.

Step S5028, the first network device issues a second message.

In one possible embodiment, the pseudo network device sends the second message to the wireless communication device after querying the IMSI of the wireless communication device.

The second message may be a tracking area update reject message or a location area update reject message.

In one possible embodiment, the reject cause value may be carried in the second message. The rejection cause value may be of various possibilities, such as: #9, #10, or #40, and so on. As before, when the reject cause value is #9, #10, #40, or the like, it is used to instruct the wireless communication apparatus to re-execute the attach procedure.

Step S5029, the first network device sends an RRC connection release message to the wireless communication apparatus to release the RRC connection with the terminal device.

The RRC connection RELEASE message in the embodiment of the present application may be RRC _ connection _ RELEASE, or may be written as RRC _ CONN _ RELEASE.

As can be seen from the above-mentioned scheme shown in fig. 7, after the wireless communication apparatus performs the voice service in the third cell and camps on the first cell, since the RRC link between the wireless communication apparatus and the first network device is released, the wireless communication apparatus cannot successfully continue to perform the voice service in the first cell, that is, cannot successfully continue to perform the voice service in the first cell, which may also be understood as a failure in performing the voice service in the first cell. And then, under the condition that the first network equipment is the pseudo network equipment, the voice service is continuously executed in the second cell.

Based on the contents shown in fig. 4a to fig. 7, fig. 8 is a schematic flowchart illustrating a communication between a wireless communication apparatus and a second network device, and the method steps shown in fig. 8 may be one possible implementation of the foregoing step S504, as shown in fig. 8, the method includes:

in step S5041, the wireless communication apparatus receives the system message transmitted by the second network device.

In this embodiment of the application, the system message in step S323 may refer to the related description of the system message in step S401, which is not described herein again.

Step S5042, the wireless communication apparatus transmits a third message to the second network device.

The third message in step S5042 may be a tracking area update request message, a location area update request message or a service request message.

When the third message is a service request message, the service request in step S5042 may be used to request to perform a voice service.

In step S5043, the wireless communications apparatus transmits a Radio Resource Control (RRC) connection establishment request to the second network device.

The RRC Connection establishment request in the embodiment of the present application may be a Connection establishment request RRC Connection setup request.

In step S5044, the second network device transmits an RRC connection setup response to the wireless communication apparatus after receiving the RRC connection setup request.

The RRC connection setup response in the embodiment of the present application may be connection setup RRC setup.

In step S5045, the wireless communication apparatus transmits an RRC connection setup complete message to the second network device.

The RRC connection setup complete message in the embodiment of the present application may be an RRC setup complete.

Step S5046, the second network device sends a fourth message to the wireless communication apparatus.

The fourth message in step S5046 may be a tracking area update accept message, a location area update accept message, or a service accept message.

In step S5047, the wireless communication apparatus transmits a fifth message to the second network device.

The fifth message in step S5047 may be a tracking area update complete message or a location area update complete message.

It is to be understood that, in the embodiment of the present application, there may be a corresponding relationship between the third message, the fourth message, and the fifth message, for example, when the third message is a tracking area update request message, the corresponding fourth message may be a tracking area update accept message, and the fifth message may be a tracking area update complete message. For another example, when the third message is a location area update request message, the corresponding fourth message may be a location area update accept message, and the fifth message may be a location area update complete message. For another example, when the third message is a service new request message, the corresponding fourth message may be a service accept message, in which case the fifth message may not be provided.

At step S5048, the second network device sends a first RRC reconfiguration request message to the wireless communication apparatus.

The first RRC reconfiguration request message in step S5048 may be used to request to configure a Data Radio Bearer (DRB) for the voice service.

The RRC Reconfiguration message (for example, the first RRC Reconfiguration message and the second RRC Reconfiguration message mentioned later) in the implementation of the present application may be an RRC Connection Reconfiguration, which may be written as RRC _ con _ Recfg.

At step S5049, the wireless communications apparatus transmits a first RRC reconfiguration complete message to the second network device.

After passing through steps S5048 and S5049, the DRB is reconfigured for the voice service, and step S50410 may be performed.

The RRC Reconfiguration Complete message (for example, the first RRC Reconfiguration Complete message and the second RRC Reconfiguration Complete message mentioned later) in the embodiment of the present application may be an RRC Connection Reconfiguration Complete, and may be written as RRC _ con _ Recfg _ Cmp.

In step S50410, the user (calling party) of the wireless communication device continues the voice call with the called party.

The following steps S50411 to S50417 describe an example of a possible call drop procedure. The voice call can be hung up by the calling party or hung up by the called party, and the hanging up of the calling party is taken as an example for showing:

in step S50411, the wireless communication apparatus receives an operation of hanging up a call from a user (calling party), and transmits a call hanging up message to the second network device based on the operation.

The S50411 call hangup message may also be a bye message.

In step S50412, the second network device transmits a200 OK message to the wireless communication apparatus.

In step S50413, the second network device transmits a second RRC reconfiguration request message to the wireless communication apparatus.

The second RRC reconfiguration request message in step S50413 may be used to request deletion of the DRB configured for the voice service.

In step S50414, the wireless communication apparatus transmits a second RRC reconfiguration complete message to the second network device.

The second RRC reconfiguration complete message may be used to indicate completion of the DRB deletion configured for the voice service.

Step S50415, the second network device sends a bearer deactivation request to the wireless communication apparatus.

In step S50416, the wireless communication apparatus transmits a bearer deactivation completion to the second network device.

In step S50417, the second network device transmits an RRC connection release message to the wireless communication apparatus.

The RRC connection release message may also be referred to as RRC release.

It can be seen that, no matter what the reject reason value carried by the second message in the foregoing step S305 is, for example, the reject reason value is #9, #10, or #40, in this embodiment of the application, when the first network device is determined to be the pseudo network device, the attach procedure is not executed according to the reason value, but the tracking area update and the location area update are executed, and then the second cell is accessed to initiate the service request again, so as to continue the voice service.

The above-mentioned fig. 4a to fig. 8 describe a scenario two, it should be noted that in the scenario two, any two network devices of the first network device, the second network device, and the third network device may all belong to different network systems. For example, the third network device may be a 5G network system, the first network device may be a 4G network system, and the second network device may be a 3G or 2G network system, in this case, when the wireless communication apparatus initiates a voice service in the third network device of the 5G system, the wireless communication apparatus may fall back to the 4G, or 2G, 3G, or the like to perform the voice service. Of course, two network devices of the first network device, the second network device, and the third network device may also belong to the same network standard, and the embodiment of the present application is not limited.

Further, in a possible implementation manner, the call may also be failed in the voice service of the second cell for some reason, in this case, the identification policy of the pseudo network device may also be continuously executed, and when it is identified that the network device to which the second cell belongs is also a pseudo network device, the handover may also be continuously performed to another cell, for example, the fourth cell performs the voice call service again. The embodiment of the present application may not be limited to the cell in which the wireless communication apparatus resides in several pseudo network devices. In the solution provided in the embodiment of the present application, after the wireless communication apparatus fails to perform the voice call, the identification policy of the pseudo network device may be executed, and then the information displayed on the wireless communication apparatus and the subsequent operations may be determined in combination with the identification result. For the related operations, reference may be made to the description of the first cell and the second cell, which will not be described in detail.

As can be seen from the solutions provided in fig. 4a to 8, in the second scenario, when the network device that the user is legal initiates a voice call and performs a voice service, and resides in the pseudo network device in the process of performing the voice service, although the voice service executed on the pseudo network device fails, the information that the voice call failed is not displayed on the display screen of the wireless communication apparatus, but when the user executes the voice service under the legal network device (after the voice call is connected), the information that the voice call corresponding to the voice service is in the connected state is always displayed on the display screen of the wireless communication apparatus, even if the RRC link between the user and the network device is released due to residing in the pseudo network device in the process of the voice call, the connected state is still displayed on the display screen of the wireless communication apparatus, and only when the network device resides in the pseudo network device, the voice signals of the users of both sides cannot be effectively transmitted, when the wireless communication device resides in a legal network device, the voice signals of the users of both parties can be effectively transmitted. In the whole process, the user does not feel that the voice service is interrupted due to the fact that the pseudo network equipment resides, so that the user does not need to initiate the voice call again under the condition that the voice service executed in the first cell fails, and the operation times of the user can be reduced.

Based on the above, fig. 9 and 10 exemplarily present interface diagrams of the wireless communication device, wherein the wireless communication device in fig. 9 is used as a calling party, and the wireless communication device in fig. 10 is used as a called party. Fig. 9 and 10 both illustrate an example in which the wireless communication device is a mobile phone, and the wireless communication device in the embodiment of the present application may be another device having a voice call function. This is described below in conjunction with fig. 9 and 10.

As shown in fig. 9, (a) in fig. 9 is a main interface of the mobile phone, and if the user can click the phone function, the interface of the mobile phone is as shown in (b) in fig. 9. The user may select a called party, for example, alice as the called party, from the tags of the contacts in (b) in fig. 9, and the user may perform an operation of "click alice on the interface", which may be the operation in step S301 described above in fig. 2 to 6b, or the operation in step S701 described above.

In response to the operation performed by the user at (b) in fig. 9, the mobile phone interface is as shown at (c) in fig. 9, where (c) in fig. 9 shows that a voice call is initiated to alice, and in response to the operation, first sub-display information is displayed on the mobile phone interface, where the first sub-display information is used to indicate that the user has initiated a voice call as a calling party but the wireless communication apparatus has not sent a ring message (such as the ring messages in the foregoing step S30613 and step S70310), so that the wireless communication apparatus of the called party has not displayed incoming call information, and it can be said that the wireless communication apparatus of the called party has not vibrated or has not ring. For convenience of introduction, a state in which the wireless communication device of the called party has not displayed incoming call information is referred to as: the called party has not yet rung. As shown in (c) of fig. 9, the first sub-display information to be displayed by the interface of the wireless communication device of the calling party may be: is dialing ….

In one possible embodiment, when the wireless communication device sends a ring message (such as the aforementioned step S30613 and step S70310), the second sub-display information may be displayed on the display screen of the wireless communication device as the calling party. The second sub-display information is used to indicate that the wireless communication device of the called party has displayed the incoming call information, and the wireless communication device of the called party has vibrated or rung. For convenience of introduction, the state in which the wireless communication device of the called party has displayed the incoming call information is referred to as: the called party has rung. As shown in (d) of fig. 9, the first sub-display information to be displayed by the interface of the wireless communication device of the calling party may be: the opposite party has rung. This stage but the voice call has not yet been answered by alice. In one possible embodiment, a "beep" ringing tone may be transmitted from the handset.

It can be understood that the mobile phone interface in (d) in fig. 9 displays first display information, where the first display information is used to indicate that a voice call corresponding to a voice service is in a state to be connected.

When the voice service is listened to by alice and the calling party and the called party are in a call state, the interface of the mobile phone may be as shown in (e) of fig. 9. It can be understood that, in (e) in fig. 9, the mobile phone interface displays second display information, where the second display information is used to indicate that the voice call corresponding to the voice service is in a connected state. The user can make a voice call with the called party in this state.

When the voice call is ended, the calling party can end the call, and the called party can end the call. Fig. 9 is a diagram illustrating that the calling party ends the call, for example, as shown in (e) of fig. 9, the user may perform an operation of "clicking a hang-up button" on the cell phone interface, and this operation may trigger the operation in step S30717 or step S50412 referred to in fig. 2 to 6 b. After the user performs the operation of "clicking the hang-up button", the interface of the mobile phone returns to the main interface, as shown in (f) of fig. 9. In this case, it can also be understood that, when the user hangs up the phone call, fourth display information indicating that the voice call is in a hang-up state is displayed on the interface of the mobile phone.

Any one of the first sub-display information and the second sub-display information may belong to the first display information mentioned in the embodiments of the present application. The first display information is used to indicate that the voice call is in a to-be-connected state, and may include a dialing stage (an interface shown in (c) of fig. 9) (a counterpart non-ringing stage), and a counterpart ringing stage (an interface shown in (d) of fig. 9).

As can be seen from fig. 9, after the user performs the first operation for initiating the voice call, the wireless communication devices each display the first sub-display information before transmitting the ringing message. After transmitting the ring message, the wireless communication device displays the second sub-display information.

In a possible embodiment, after the step S301, the interface diagram of the mobile phone is as shown in fig. 9 (c), and the first sub-display information in the first display information is continuously displayed, and after the first network device is a pseudo network device and the wireless communication apparatus accesses the second cell and connects the voice call with the called party, that is, after the step S306, until the step S30613, the wireless communication apparatus continuously displays the first sub-display information. After step S30613, the wireless communication apparatus displays the second sub-display information in the first display information, and the interface of the cellular phone is updated from (c) in fig. 9 to (d) in fig. 9. The wireless communication device displays the first display information until the called party answers the voice call. When the called party answers the voice call, the interface of the mobile phone is updated from (d) in fig. 9 to (e) in fig. 9. It can be seen that, in the process of updating the handset interface from (c) in fig. 9 to (e) in fig. 9, although the wireless communication apparatus camps on the pseudo network device in the process, the user does not perceive the event of voice service failure due to the camping on the pseudo network device, and therefore, the user does not need to initiate the voice service again, so that the user operation can be reduced.

As described with reference to fig. 5a and 5b, after step S701, the interface of the mobile phone may display the first sub-display information in the first display information as shown in (c) of fig. 9 until the ring message in step S70310 of fig. 5 b. After the ring message in step S70310 in fig. 5b is executed, the interface of the mobile phone may display the second sub-display information in the first display information as shown in (d) in fig. 9. When the voice call is answered by the called party, second display information may be displayed as shown in (e) of fig. 9.

Further, as described with reference to fig. 4a, after the step S501, the interface diagram of the mobile phone is as shown in (e) of fig. 9, and the second display information is continuously displayed, after the first network device is a pseudo network device and the wireless communication device accesses the second cell and connects the voice call with the called party, that is, after the step S504, the interface of the mobile phone always maintains the interface of (e) of fig. 9, and the user can resume the call with the called party after the step S504. It can be seen that, although the wireless communication apparatus resides in the pseudo network device after the voice call is turned on, the user always sees the interface where the voice call is in the connected state after the voice call is turned on, that is, the interface shown in (e) in fig. 9, and therefore does not sense an event that the voice service fails due to the residence of the pseudo network device, and therefore, the user does not need to initiate the voice service again, so that the user operation can be reduced.

As shown in fig. 10, (a) in fig. 10 is a main interface when the mobile phone is used as a called party and a voice call of a calling party is received, in this case, it can be understood that the first display information is displayed on the display screen of the mobile phone. In one possible embodiment, the first display information may include a third sub-display information. The third sub-display information is used for indicating the wireless communication device as a called party and displaying the information when the voice call of the calling party is received. The third sub-display information is used for indicating that the voice call is in a state to be connected. The user can perform a "click on accept button" operation to answer the voice call. For example, as shown in (b) of fig. 10, when the user finger motor accepts the button, the interface of the mobile phone displays the second display information, that is, the voice call is in the connected state, as shown in (c) of fig. 10, in which case, the calling party can make a voice call with the called party. When the voice call is ended, the calling party can end the call, and the called party can end the call. In fig. 10, it is illustrated that the called party ends the call, for example, as shown in (d) in fig. 10, the user may perform an operation of "clicking a hang-up button" on the mobile phone interface, and the operation may trigger the operation in step S30717 or step S50412 mentioned in fig. 2 to 6 b. After the user performs the operation of "clicking the hang-up button", the interface of the mobile phone returns to the main interface, as shown in (e) of fig. 10. In this case, it can be understood that, when the user hangs up the phone call, fourth display information indicating that the voice call is in a hang-up state is displayed on the interface of the mobile phone.

As described with reference to fig. 6a and fig. 6b, after step S80210 in step S802, the interface of the mobile phone may display the third sub-display information in the first display information as shown in (a) in fig. 10. When the user answers the voice call, that is, after performing the operation of step S803, the interface of the mobile phone may be as shown in (c) of fig. 10.

Further, as described with reference to fig. 4a, after the step S501, the interface diagram of the mobile phone is as shown in (c) of fig. 10, and the second display information is continuously displayed, after the first network device is a pseudo network device and the wireless communication device accesses the second cell and connects the voice call with the called party, that is, after the step S504, the interface of the mobile phone always maintains the interface of (c) of fig. 10, and the user can resume the call with the called party after the step S504. It can be seen that, although the wireless communication apparatus resides in the pseudo network device after the voice call is turned on, the user always sees the interface where the voice call is in the connected state after the voice call is turned on, that is, the interface shown in (c) in fig. 10, and therefore does not sense an event that the voice service fails due to the residence of the pseudo network device, and therefore, the user does not need to initiate the voice service again, so that the user operation can be reduced.

It should be noted that, as mentioned in fig. 2 to fig. 8, when the first network device is not a pseudo network device, whether the wireless communication device is a calling party or a called party, it is determined that the voice service is failed to be executed, and third display information is displayed on the display screen, where the third display information is used for indicating that the voice call corresponding to the voice service is in an end state. When the third display information is displayed on the display screen, the interface schematic diagram of the display screen of the wireless communication apparatus may display a main interface, such as the interface shown in (e) in fig. 9 described above, or the interface shown in (d) in fig. 10 described above. In this case, the user may see that the voice call is not opened or feel that the voice call is forcibly interrupted, and the user may initiate the voice call again.

And, unless specifically stated otherwise, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the order, sequence, priority, or importance of the plurality of objects. For example, the first tracking area and the second tracking area are only used for distinguishing different tracking areas, and do not indicate the difference of the priority or importance of the two cells.

It should be noted that the names of the above messages are only used as examples, and any message may change its name as the communication technology evolves, but it falls within the scope of the present application as long as its meaning is the same as that of the above message of the present application, regardless of the change in the name.

The above-mentioned scheme provided by the present application is mainly introduced from the perspective of interaction between network elements. It is to be understood that the above-described implementation of each network element includes, in order to implement the above-described functions, a corresponding hardware structure and/or software module for performing each function. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

According to the foregoing method, fig. 11a is a schematic structural diagram of a communication apparatus provided in this embodiment, and as shown in fig. 11a, the communication apparatus may be a wireless communication apparatus or a network device (the network device in this application is, for example, the foregoing first network device, second network device, or third network device), or may be a chip or a circuit, such as a chip or a circuit that can be disposed in the wireless communication apparatus, or further such as a chip or a circuit that can be disposed in the network device. The wireless communication means may be the terminal device mentioned in the foregoing, or a chip or a circuit within the terminal device.

As shown in fig. 11a, the wireless communication device may include a number of components, such as: an application subsystem, a memory (memory), a mass storage (mass storage), a baseband subsystem, a Radio Frequency Integrated Circuit (RFIC), a Radio Frequency Front End (RFFE) device, and an antenna (antenna, ANT). These components may be coupled by various interconnection buses or other electrical connections.

In fig. 11a, ANT _1 denotes a first antenna, ANT _ N denotes an nth antenna, and N is a positive integer greater than 1. Tx denotes a transmit path, Rx denotes a receive path, and different numbers denote different paths. Each path may represent a signal processing channel. Where FBRx denotes a feedback reception path, PRx denotes a main reception path, and DRx denotes a diversity reception path. HB denotes high frequency, LB denotes low frequency, and both denote relative high and low frequencies. BB denotes baseband. It should be understood that the labels and components in fig. 11a are for illustrative purposes only, and are provided as one possible implementation, and that other implementations are also encompassed by the embodiments of the present application. For example, a wireless communication device may include more or fewer paths, including more or fewer components.

The application subsystem may include one or more processors, among other things. The plurality of processors may be a plurality of processors of the same type or may comprise a combination of processors of multiple types. In the present application, the processor may be a general-purpose processor or a processor designed for a specific field. For example, the processor may be a Central Processing Unit (CPU), a Digital Signal Processor (DSP), or a Micro Control Unit (MCU). The processor may also be a Graphics Processing Unit (GPU), an image signal processing unit (ISP), an Audio Signal Processor (ASP), and an AI processor specifically designed for Artificial Intelligence (AI) applications. AI processors include, but are not limited to, neural Network Processing Units (NPUs), Tensor Processing Units (TPUs), and processors known as AI engines.

The radio frequency integrated circuit (including RFIC 1, and optionally one or more RFICs 2) and the radio frequency front end devices may together comprise a radio frequency subsystem. The RF subsystem may be divided into a RF receive path (RF receive path) and a RF transmit path (RF transmit path) according to the receiving or transmitting path of the signal. The rf receive channel may receive an rf signal via an antenna, process (e.g., amplify, filter, and downconvert) the rf signal to obtain a baseband signal, and deliver the baseband signal to the baseband subsystem. The rf transmit path may receive the baseband signals from the baseband subsystem, process (e.g., upconvert, amplify, and filter) the baseband signals to obtain rf signals, and finally radiate the rf signals into space via an antenna. The radio frequency integrated circuit may be referred to as a radio frequency processing chip or a radio frequency chip.

Similar to the rf subsystem that mainly performs rf signal processing, the baseband subsystem mainly performs processing of baseband signals. The baseband subsystem may extract useful information or data bits from the baseband signal or convert the information or data bits to a baseband signal to be transmitted. These information or data bits may be data representing user data or control information such as voice, text, video, etc. For example, the baseband subsystem may perform signal processing operations such as modulation and demodulation, encoding and decoding. The baseband signal processing operations are also not exactly the same for different radio access technologies, such as 5G NR and 4G LTE.

Similar to the application subsystem, the baseband subsystem may also include one or more processors. In addition, the baseband subsystem may also include one or more Hardware Accelerators (HACs). The hardware accelerator can be used for specially finishing sub-functions with large processing overhead, such as assembly and analysis of data packets (data packets), encryption and decryption of the data packets, and the like. These sub-functions may also be implemented using general-purpose processors, but for performance or cost considerations, it may be more appropriate to use hardware accelerators. In a specific implementation, the hardware accelerator is mainly implemented by an Application Specific Integrated Circuit (ASIC). Of course, one or more relatively simple processors, such as MCUs, may also be included in the hardware accelerator.

The baseband subsystem may be integrated into one or more chips, which may be referred to as baseband processing chips or baseband chips. The baseband subsystem may be implemented as a stand-alone chip, which may be referred to as a modem (modem) or modem chip. The baseband subsystem may be manufactured and sold in units of modem chips. modem chips are also sometimes referred to as baseband processors or mobile processors. In addition, the baseband subsystem may be further integrated into a larger chip, and manufactured and sold in units of larger chips. This larger chip may be referred to as a system-on-chip, system-on-a-chip or system-on-a-chip (SoC), or simply as an SoC chip. The software components of the baseband subsystem may be built in the hardware components of the chip before the chip leaves factory, or may be imported into the hardware components of the chip from other nonvolatile memories after the chip leaves factory, or may be downloaded and updated in an online manner through a network.

In addition, the wireless communication device may also include storage, such as the memory and mass storage of FIG. 11 a. In addition, one or more buffers may be included in the application subsystem and the baseband subsystem, respectively. In a specific implementation, the memory can be divided into a volatile memory (NVM) and a non-volatile memory (NVM). Volatile memory refers to memory in which data stored therein is lost when power supply is interrupted. Currently, volatile memory is mainly Random Access Memory (RAM), including Static RAM (SRAM) and Dynamic RAM (DRAM). A nonvolatile memory is a memory in which data stored inside is not lost even if power supply is interrupted. Common non-volatile memories include Read Only Memories (ROMs), optical disks, magnetic disks, and various memories based on flash memory technology, etc. Generally, the memory and cache may be volatile memory, and the mass storage may be non-volatile memory, such as flash memory.

According to the foregoing method, fig. 11b is a schematic structural diagram of a communication apparatus provided in this embodiment of the present application, and as shown in fig. 11b, the communication apparatus may be a wireless communication apparatus or a network device, or may be a chip or a circuit, such as a chip or a circuit that can be disposed in the wireless communication apparatus, or further such as a chip or a circuit that can be disposed in the network device. The wireless communication means may be the terminal device mentioned in the foregoing, or a chip or a circuit within the terminal device. The communication device of fig. 11b may be the communication device of fig. 11 a.

As shown in fig. 11b, the communication device 1301 can include a processor 1302, and a transceiver 1303 coupled to the processor 1302. A memory 1304 may also be included.

Further, the communication device 1301 may further include a bus system, wherein the processor 1302, the memory 1304, and the transceiver 1303 may be connected via the bus system.

It should be understood that the processor 1302 may be a chip. For example, the processor 1302 may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1302. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules in the processor 1302. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1304, and the processor 1302 reads the information in the memory 1304 and performs the steps of the above method in combination with hardware thereof.

It should be noted that the processor 1302 in the embodiment of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor described above may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory 1304 in the subject embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), SLDRAM (synchronous DRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In a case where the communication device 1301 corresponds to a wireless communication device in the above-described method, the communication device may include a processor 1302, a transceiver 1303, and a memory 1304. The memory 1304 is configured to store instructions, and the processor 1302 is configured to execute the instructions stored by the memory 1304 to implement aspects related to a wireless communication device in any one or any plurality of corresponding methods as described above in fig. 1-10.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303: failure to perform voice service in the first cell; executing a pseudo network equipment identification strategy, and under the condition that the first network equipment to which the first cell belongs is identified to be pseudo network equipment: and accessing the second cell, and attempting to perform voice service in the second cell.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: receiving a system message from a first network device; receiving first operation information input by a user, wherein the first operation information is used for indicating the user to initiate a voice service; sending a first message in a first cell, wherein the first message is used for requesting a tracking area or a location area to be updated; and receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, further: and when the second message is received, displaying first display information through the display screen, wherein the first display information is used for indicating that the voice call corresponding to the voice service is in a state to be connected.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: receiving a system message from a second network device to which a second cell belongs; and sending a session invitation message at the second cell based on the first operation information, wherein the session invitation message is used for initiating the voice service.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: in the case that the first network device is a pseudo network device: in a first time period, the information displayed through the display screen is first display information; wherein the starting point of the first time period is: earlier than a point in time when the second message is received; end point of the first period: later than the point in time when the session invite message was sent.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, further: performing voice service in the third cell; sending a first message in a first cell, wherein the first message is used for requesting a tracking area or a location area to be updated; and receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, further: and when the second message is received, displaying second display information through the display screen, wherein the second display information is used for indicating that the voice call corresponding to the voice service is in a connection state.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: receiving a system message from a second network device to which a second cell belongs; receiving a first Radio Resource Control (RRC) reconfiguration request message, wherein the first RRC reconfiguration request message is used for requesting to configure a data resource bearer for the voice service; and sending a first RRC reconfiguration complete message in the second cell.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: in the case that the first network device is a pseudo network device: in a second time period, the information displayed through the display screen is second display information, and the second display information is used for indicating that the voice call corresponding to the voice service is in a connected state; wherein, the starting point of the second time period is: the time point when the voice call corresponding to the voice service initiated in the third cell is in the connection state; end point of the second period: later than the time of sending the first RRC reconfiguration request message.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: receiving first operation information input by a user, wherein the first operation information is used for indicating to initiate a voice service; and sending a session invitation message at the third cell based on the first operation information, wherein the session invitation message is used for initiating the voice service.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: a paging message is received at the third cell, the paging message for instructing the wireless communication device to initiate voice traffic.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, further: in case it is identified that the first network device to which the first cell belongs is not a fake network device: and displaying third display information through the display screen, wherein the third display information is used for indicating that the voice call corresponding to the voice service is in an ending state.

In a possible embodiment, the second message further includes first indication information for instructing the wireless communication apparatus to perform an attach procedure; processor 1302 is configured to, via transceiver 1303, further: in case it is identified that the first network device to which the first cell belongs is not a fake network device: and executing the attaching process based on the first indication information.

In one possible implementation, the processor 1302 is configured to, via the transceiver 1303, in particular: sending an attach request in the second cell; receiving an attachment acceptance sent by second network equipment to which a second cell belongs; the attach complete is sent in the second cell.

For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the communication device, please refer to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

Fig. 12 is a schematic structural diagram of a communication apparatus according to the foregoing method, and as shown in fig. 12, the communication apparatus 1401 may include a communication interface 1403, a processor 1402, and a memory 1404. A communication interface 1403 for inputting and/or outputting information; a processor 1402, configured to execute a computer program or an instruction, causes the communication apparatus 1401 to implement the method on the wireless communication apparatus side in the related schemes of fig. 1 to 10 described above, or causes the communication apparatus 1401 to implement the method on the network device side in the related schemes of fig. 1 to 10 described above. In this embodiment of the application, the communication interface 1403 may implement the scheme implemented by the transceiver 1303 in fig. 11b, the processor 1402 may implement the scheme implemented by the processor 1302 in fig. 11b, and the memory 1404 may implement the scheme implemented by the memory 1304 in fig. 11b, which is not described herein again.

Based on the above embodiments and the same concept, fig. 13 is a schematic diagram of a communication device provided in an embodiment of the present application, and as shown in fig. 13, the communication device 1501 may be a wireless communication device, or may be a chip or a circuit, such as a chip or a circuit that may be disposed in a wireless communication device.

The communication device may correspond to the wireless communication device in the above method. The communication device may implement the steps performed by the wireless communication device in any one or any number of corresponding methods shown in fig. 1-10 above. The communication device may include a processing unit 1502, a communication unit 1503, and a storage unit 1504.

The communication device 1501 is the above-described wireless communication device, and in one possible implementation, the processing unit 1502 is configured to, via the communication unit 1503: failure to perform voice service in the first cell; executing a pseudo network equipment identification strategy, and under the condition that the first network equipment to which the first cell belongs is identified to be pseudo network equipment: and accessing the second cell, and attempting to perform voice service in the second cell.

It is to be understood that the functions of the units in the communication apparatus 1501 can refer to the implementation of the corresponding method embodiments, and are not described herein again.

It should be understood that the above division of the units of the communication device is only a division of logical functions, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. In this embodiment, the communication unit 1503 may be implemented by the transceiver 1303 in fig. 11b, and the processing unit 1502 may be implemented by the processor 1302 in fig. 11 b.

Based on the above embodiments and the same concept, fig. 14 is a schematic diagram of a communication apparatus provided in an embodiment of the present application, and as shown in fig. 14, the communication apparatus 1601 may be a wireless communication apparatus or a network device, or may be a chip or a circuit, such as a chip or a circuit that may be disposed in a wireless communication apparatus or a network device.

The communication device may correspond to the wireless communication device in the above method. The communication device may implement the steps performed by the wireless communication device in any one or any number of corresponding methods shown in fig. 1-10 above. The communication device may include a processing circuit 1602 and an interface circuit 1603.

The communication device 1601 is the wireless communication device described above, and in one possible implementation, the processing circuit 1602: failure to perform voice service in the first cell; executing a pseudo network equipment identification strategy, and under the condition that the first network equipment to which the first cell belongs is identified to be pseudo network equipment: and accessing the second cell, and attempting to perform voice service in the second cell.

It is to be understood that the functions of the units in the communication apparatus 1601 may refer to the implementation of the corresponding method embodiments, and are not described herein again.

It should be understood that the above division of the units of the communication device is only a division of logical functions, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. In this embodiment, the interface circuit 1603 may be implemented by the transceiver 1303 in fig. 11b, and the processing circuit 1602 may be implemented by the processor 1302 in fig. 11 b.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code or instructions which, when run on a computer, cause the computer to perform the method of any one of the embodiments shown in figures 1 to 10.

According to the method provided by the embodiment of the present application, the present application further provides a computer-readable storage medium storing program code, which when run on a computer, causes the computer to execute the method of any one of the embodiments shown in fig. 1 to 10.

According to the method provided by the embodiment of the present application, a chip system is also provided, and the chip system may include a processor. The processor is coupled to the memory and is operable to perform the method of any one of the embodiments shown in fig. 1-10. Optionally, the chip system further comprises a memory. A memory for storing a computer program (also referred to as code, or instructions). A processor for calling and running the computer program from the memory so that the device with the system on chip mounted thereon executes the method of any one of the embodiments shown in fig. 1 to 10.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the foregoing one or more wireless communication apparatuses and one or more network devices.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The processes or functions according to the embodiments of the present application are generated in whole or in part when the computer instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

It is noted that a portion of this patent application contains material which is subject to copyright protection. The copyright owner reserves the copyright rights whatsoever, except for making copies of the patent files or recorded patent document contents of the patent office.

The network device in the above-mentioned respective device embodiments corresponds to the wireless communication device and the network device or the wireless communication device in the method embodiments, and the corresponding steps are executed by a corresponding module or unit, for example, the communication unit (transceiver) executes the steps of receiving or transmitting in the method embodiments, and other steps besides transmitting and receiving may be executed by a processing unit (processor). The functions of the specific elements may be referred to in the respective method embodiments. The number of the processors can be one or more.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is only a logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for a wireless communication apparatus, the method comprising:

failure to perform voice service in the first cell;

executing a pseudo network device identification strategy, and under the condition that the first network device to which the first cell belongs is identified to be a pseudo network device: accessing a second cell, and attempting the voice service in the second cell.
The method of claim 1, wherein the failure to perform the voice service in the first cell comprises:

receiving a system message from the first network device;

receiving first operation information input by a user, wherein the first operation information is used for indicating the user to initiate the voice service;

sending a first message at the first cell, the first message being used for requesting a tracking area update or a location area update;

and receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails.
The method of claim 2, wherein the method further comprises:

and when the second message is received, the wireless communication device displays first display information through a display screen, wherein the first display information is used for indicating that the voice call corresponding to the voice service is in a state to be connected.
The method according to claim 2 or 3, wherein the accessing the second cell and the attempting the voice service in the second cell specifically include:

receiving a system message from a second network device to which the second cell belongs;

and sending a session invitation message at the second cell based on the first operation information, wherein the session invitation message is used for initiating the voice service.
The method of claim 4, wherein if the first network device is a pseudo network device:

in a first time period, the information displayed by the wireless communication device through the display screen is first display information;

wherein a starting point of the first period of time is: earlier than a point in time when the second message is received;

an end point of the first period of time: later than the point in time at which the session invite message was sent.
The method of claim 1, wherein prior to the failure of the first cell to perform the voice service, further comprising:

performing voice service in the third cell;

the failure to perform the voice service in the first cell includes:

sending a first message at the first cell, the first message being used for requesting a tracking area update or a location area update;

and receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails.
The method of claim 6, wherein the method further comprises:

and when the second message is received, the wireless communication device displays second display information through a display screen, wherein the second display information is used for indicating that the voice call corresponding to the voice service is in a connection state.
The method according to claim 6 or 7, wherein the accessing the second cell and the attempting the voice service in the second cell specifically include:

receiving a system message from a second network device to which the second cell belongs;

receiving a first Radio Resource Control (RRC) reconfiguration request message, wherein the first RRC reconfiguration request message is used for requesting to configure a data resource bearer for the voice service;

and sending a first RRC reconfiguration complete message in the second cell.
The method of claim 8, wherein if the first network device is a pseudo network device:

in a second time period, the information displayed by the wireless communication device through the display screen is second display information, and the second display information is used for indicating that the voice call corresponding to the voice service is in a connected state;

wherein the starting point of the second time period is: a time point when a voice call corresponding to the voice service initiated by the third cell is in a connected state;

an end point of the second period of time: later than the time of sending the first RRC reconfiguration request message.
The method of any of claims 6-9, wherein said conducting said voice service in a third cell comprises:

receiving first operation information input by a user, wherein the first operation information is used for indicating to initiate the voice service;

and sending a session invitation message at the third cell based on the first operation information, wherein the session invitation message is used for initiating the voice service.
The method of any of claims 6-9, wherein said conducting said voice service in a third cell comprises:

receiving a paging message at the third cell, the paging message for instructing the wireless communication device to initiate the voice service.
The method of any of claims 1-11, wherein after the performing the pseudo network device identification policy, further comprising:

in the event that it is identified that the first network device to which the first cell belongs is not a pseudo network device:

the wireless communication device displays information on a display screen as third display information, and the third display information is used for indicating that the voice call corresponding to the voice service is in an ending state.
The method of any of claims 1-12, wherein the second message further comprises first indication information for indicating the wireless communication apparatus to perform an attach procedure;

after the executing the pseudo network device identification policy, the method further includes:

in the event that it is identified that the first network device to which the first cell belongs is not a pseudo network device: and executing an attachment process based on the first indication information.
The method of claim 13, wherein performing an attach procedure based on the first indication information comprises:

sending an attach request in the second cell;

receiving an attachment acceptance sent by second network equipment to which the second cell belongs;

sending an attach complete in the second cell.
The method of claim 13 or 14, wherein the first indication information comprises: one reject cause value of #9, #10, or # 40.
A wireless communications apparatus, comprising:

processing circuitry, and interface circuitry coupled with the processing circuitry, wherein the processing circuitry is to, via the interface circuitry:

failure to perform voice service in the first cell;

executing a pseudo network device identification strategy, and under the condition that the first network device to which the first cell belongs is identified to be a pseudo network device: accessing a second cell, and attempting the voice service in the second cell.
The apparatus as claimed in claim 16, wherein said processing circuitry is to, via said interface circuitry, in particular to:

receiving a system message from the first network device;

receiving first operation information input by a user, wherein the first operation information is used for indicating the user to initiate the voice service;

sending a first message in the first cell, wherein the first message is used for requesting a tracking area or a location area to be updated;

and receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails.
The apparatus of claim 17, wherein the processing circuit, via the interface circuit, is to further:

and when the second message is received, displaying first display information through a display screen, wherein the first display information is used for indicating that the voice call corresponding to the voice service is in a state to be connected.
The apparatus according to claim 17 or 18, wherein the processing circuit is configured to, via the interface circuit, in particular:

receiving a system message from a second network device to which the second cell belongs;

and sending a session invitation message at the second cell based on the first operation information, wherein the session invitation message is used for initiating the voice service.
The apparatus as claimed in claim 19, wherein said processing circuitry is to, via said interface circuitry, in particular to:

when the first network device is a pseudo network device:

in a first time period, the information displayed through the display screen is first display information;

wherein a starting point of the first period of time is: earlier than a point in time when the second message is received;

an end point of the first period of time: later than the point in time at which the session invite message was sent.
The apparatus of claim 16, wherein the processing circuit, via the interface circuit, is to further:

performing voice service in the third cell;

sending a first message in the first cell, wherein the first message is used for requesting a tracking area or a location area to be updated;

and receiving a second message from the first network equipment to which the first cell belongs, wherein the second message is used for indicating that the tracking area update fails or the location area update fails.
The apparatus of claim 21, wherein the processing circuit, via the interface circuit, is to further:

and when the second message is received, displaying second display information through a display screen, wherein the second display information is used for indicating that the voice call corresponding to the voice service is in a connected state.
The apparatus according to claim 21 or 22, wherein the processing circuit is configured to, via the interface circuit, in particular:

receiving a system message from a second network device to which the second cell belongs;

receiving a first Radio Resource Control (RRC) reconfiguration request message, wherein the first RRC reconfiguration request message is used for requesting to configure a data resource bearer for the voice service;

and sending a first RRC reconfiguration complete message in the second cell.
The apparatus as claimed in claim 23, wherein said processing circuitry is configured to, via said interface circuitry, in particular to:

when the first network device is a pseudo network device:

in a second time period, the information displayed through the display screen is second display information, and the second display information is used for indicating that the voice call corresponding to the voice service is in a connected state;

wherein the starting point of the second time period is: a time point when a voice call corresponding to the voice service initiated by the third cell is in a connected state;

an end point of the second period of time: later than the time of sending the first RRC reconfiguration request message.
The apparatus according to any of claims 21-24, wherein the processing circuit is configured to, via the interface circuit, in particular to:

receiving first operation information input by a user, wherein the first operation information is used for indicating to initiate the voice service;

and sending a session invitation message in the third cell based on the first operation information, wherein the session invitation message is used for initiating the voice service.
The apparatus according to any of claims 21-24, wherein the processing circuit is configured to, via the interface circuit, in particular to:

receiving a paging message at the third cell, the paging message for instructing the wireless communication device to initiate the voice service.
The apparatus of any one of claims 16-26, wherein the processing circuit, via the interface circuit, is further to:

in the event that it is identified that the first network device to which the first cell belongs is not a pseudo network device:

and displaying third display information through a display screen, wherein the third display information is used for indicating that the voice call corresponding to the voice service is in an ending state.
The apparatus of any one of claims 16-27, wherein the second message further comprises first indication information for instructing the wireless communication apparatus to perform an attach procedure;

the processing circuitry is to, via the interface circuitry, further:

in the event that it is identified that the first network device to which the first cell belongs is not a pseudo network device: and executing an attachment process based on the first indication information.
The apparatus as claimed in claim 28, wherein said processing circuitry is to, via said interface circuitry, in particular to:

sending an attach request in the second cell;

receiving an attachment acceptance sent by second network equipment to which the second cell belongs;

sending an attach complete in the second cell.
The apparatus of claim 28 or 29, wherein the first indication information comprises: #9, #10, or #40 rejects the cause value.
A communication apparatus, the apparatus comprising a processor and a memory,

the memory is used for storing an executable program;

the processor to execute a computer executable program in a memory to cause the method of any of claims 1-15 to be performed.
A communication apparatus, the apparatus comprising a processor and a communication interface,

the communication interface is used for inputting and/or outputting information;

the processor to execute a computer-executable program to cause the method of any one of claims 1-15 to be performed.
A computer-readable storage medium, characterized in that it stores a computer-executable program which, when invoked by a computer, causes the computer to perform the method according to any one of claims 1 to 15.
A chip system, comprising:

the communication interface is used for inputting and/or outputting information;

a processor for executing a computer executable program for causing a device on which the system-on-chip is installed to perform the method of any one of claims 1-15.