CN117643155A

CN117643155A - Communication method and device

Info

Publication number: CN117643155A
Application number: CN202180100560.2A
Authority: CN
Inventors: 杨皓睿; 杨韧; 陈扬
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2024-03-01
Also published as: WO2023077329A1

Abstract

The embodiment of the application provides a communication method and device, wherein the method comprises the following steps: and receiving a service request message sent by the terminal equipment, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that the information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data. Establishing NAS connection with the terminal equipment according to the service request message; the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority signaling. Through the network equipment, according to the service request message, NAS connection is always established with the terminal equipment, so that the problem that the processing time of the signaling of PS Data off state change caused by repeatedly executing the SR process is prolonged can be avoided.

Description

Communication method and device

Technical Field

The present disclosure relates to the field of communications, and in particular, to a communication method and apparatus.

Background

The state change signaling of the packet switched Data interrupt (Packet Switching Data off, PS Data off) may inform the network device that the PS Data off state of the terminal device has changed.

In the current implementation, when the terminal device wants to send PS Data off state change signaling in the idle state, the terminal device may first initiate an SR procedure to the access and mobility management function (Access and Mobility Management Function, AMF) network element, but if after the terminal device initiates the SR procedure, the AMF may reject the connection request if the non-allowed area of the network device changes, and then the terminal device needs to initiate the SR procedure again.

The prior art implementation will therefore cause the terminal device and the AMF to repeatedly perform the SR procedure, resulting in the processing time of the signaling of the PS Data off state change being prolonged.

Disclosure of Invention

The embodiment of the application provides a communication method and device, so as to avoid the problem that the processing time of signaling of PS Data off state change is prolonged caused by repeated execution of SR flow by terminal equipment and AMF.

In a first aspect, an embodiment of the present application provides a communication method, applied to a network device, including:

receiving a service request message sent by a terminal device, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that information to be sent is general signaling (the second type is used for indicating that the information to be sent is high-priority signaling, and the third type is used for indicating that the information to be sent is user data;

Establishing non-access stratum (NAS) connection with the terminal equipment according to the service request message;

the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority first signaling.

In a second aspect, an embodiment of the present application provides a communication method, which is applied to a terminal device, including:

a service request message is sent to a network device, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data;

establishing NAS connection with the network equipment;

the NAS connection is used for sending information by the terminal equipment, wherein the information comprises a first signaling with high priority.

In a third aspect, an embodiment of the present application provides a communication apparatus, applied to a network device, including:

a receiving module, configured to receive a service request message sent by a terminal device, where a service type in the service request message is any one of a first type, a second type, and a third type, where the first type is used to indicate that information to be sent is a general signaling (, the second type is used to indicate that information to be sent is a signaling with a high priority, and the third type is used to indicate that information to be sent is user data;

The connection module is used for establishing NAS connection with the terminal equipment according to the service request message;

the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority signaling.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, which is applied to a terminal device, including:

a sending module, configured to send a service request message to a network device, where a service type in the service request message is any one of a first type, a second type, and a third type, where the first type is used to indicate that information to be sent is a general signaling, the second type is used to indicate that information to be sent is a signaling with a high priority, and the third type is used to indicate that information to be sent is user data;

a connection module, configured to establish NAS connection with the network device;

the NAS connection is used for sending information by the terminal equipment, wherein the information comprises high-priority signaling.

In a fifth aspect, embodiments of the present application provide a network device, including: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

The processor executes computer-executable instructions stored by the memory to cause the processor to perform the communication method as described in the first aspect above.

In a sixth aspect, an embodiment of the present application provides a terminal device, including: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory to cause the processor to perform the communication method as described in the second aspect above.

In a seventh aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the communication method according to the first aspect above or the second aspect above when the computer-executable instructions are executed by a processor.

In an eighth aspect, embodiments of the present application provide a computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the communication method according to the first aspect above or the second aspect above.

The embodiment of the application provides a communication method and device, wherein the method comprises the following steps: and receiving a service request message sent by the terminal equipment, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that the information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data. According to the service request message, establishing non-access stratum (NAS) connection with the terminal equipment; the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority signaling. By setting the service type in the service request message to be the second type and/or the network device establishes NAS connection with the terminal device according to the service request message all the time, that is, does not reject the service request of the terminal device, the problem that the processing time of the signaling of the PS Data off state change caused by repeatedly executing the SR process is prolonged can be effectively avoided.

Drawings

Fig. 1 is a schematic diagram of a communication scenario provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a 5G network architecture;

FIG. 3 is a schematic diagram of a 5G network architecture based on a servitization interface in a non-roaming scenario;

FIG. 4 is a schematic diagram of a non-allowed area provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of an implementation of a repeated SR process according to embodiments of the disclosure;

fig. 6 is a flowchart of a communication method provided in an embodiment of the present application;

fig. 7 is a schematic diagram of a first implementation of determining a service type according to an embodiment of the present application;

fig. 8 is a second implementation schematic diagram of determining a service type according to an embodiment of the present application;

fig. 9 is a second flow chart of a communication method according to an embodiment of the present application;

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

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

fig. 12 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

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

Detailed Description

For ease of understanding, concepts related to the present application are explained first.

Terminal equipment: the device comprises a wireless receiving and transmitting function and can be matched with network equipment to provide communication service for users. In particular, a terminal device may refer to a User Equipment (UE), an access terminal device, a subscriber unit, a subscriber station, a mobile station, a remote terminal device, a mobile device, a User terminal device, a wireless communication device, a User agent, or a User Equipment. For example, the terminal device may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network or a network after 5G, etc.

Network equipment: the network device may be a device for communicating with the terminal device, for example, may be a base station (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile Communication, GSM) or code division multiple access (Code Division Mult iple Access, CDMA) communication system, may be a base station (NodeB, NB) in a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, or the like.

The network devices involved in embodiments of the present application may also be referred to as radio access network (Radio Access Network, RAN) devices. The RAN equipment is connected with the terminal equipment and is used for receiving the data of the terminal equipment and sending the data to the core network equipment. The RAN devices correspond to different devices in different communication systems, e.g. to base stations and base station controllers in 2G systems, to base stations and Radio network controllers (Radio Network Controller, RNC) in 3G systems, to evolved base stations (Evolutional Node B, eNB) in 4G systems, and to access network devices (e.g. gNB, centralized unit CU, distributed unit DU) in 5G systems, such as New Radio, NR.

Next, a scene to which the communication method in the present application is applied will be described with reference to fig. 1.

Fig. 1 is a schematic diagram of a communication scenario provided in an embodiment of the present application. Referring to fig. 1, the network device 101 and the terminal device 102 are included, and wireless communication can be performed between the network device 101 and the terminal device 102, where the terminal device 102 can communicate with at least one core network via a radio access network (Radio Access Network, RAN).

The communication system may be a global system for mobile communications (Global System of Mobile communication, abbreviated as GSM) system, a code division multiple access (Code Division Multiple Access, abbreviated as CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, abbreviated as WCDMA) system, a long term evolution (Long Term Evolution, abbreviated as LTE) system, or a fifth Generation mobile communication (5 th-Generation, abbreviated as 5G) system.

Correspondingly, the network device may be a base station (Base Transceiver Station, abbreviated as BTS) in a GSM system or a CDMA system, a base station (NodeB, abbreviated as NB) in a WCDMA system, an evolved NodeB (abbreviated as eNB) in an LTE system, an Access Point (AP) or a relay station, a base station in a 5G system, or the like, which is not limited herein.

The 5G mobile communication system described herein includes a non-independent Networking (NSA) 5G mobile communication system and/or an independent networking (SA) 5G mobile communication system. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system. The communication system may also be a PLMN network, a device-to-device (D2D) network, a machine-to-machine (machine to machine, M2M) network, an IoT network, or other network.

It can be understood that, if the technical solution of the embodiment of the present application is applied to other wireless communication networks, the corresponding names may also be replaced by names of corresponding functions in other wireless communication networks.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

The communication method provided by the application can be applied to a 5G system and also can be applied to an evolution grouping system (Evolved Packet System, EPS). A UE, AN Access Network (AN), a core Network, and a Data Network (DN) may be included in the corresponding Network architecture.

The access network device is mainly used for realizing the functions of wireless physical layer function, resource scheduling and wireless resource management, wireless access control, mobility management and the like; the core network device may include a management device mainly used for device registration, security authentication, mobility management, location management, etc. of the terminal device, and a gateway device mainly used for establishing a channel with the terminal device, and forwarding a data packet between the terminal device and an external data network on the channel; the data network may comprise network devices (e.g., servers, routers, etc.) and is primarily configured to provide various data traffic services to the terminal devices.

The network architecture may be a 5G network architecture, and fig. 2 is a schematic diagram of the 5G network architecture, where the 5G system is also called a New wireless communication system, a New Radio (NR), or a next generation mobile communication system.

As shown in fig. 2, the access network in the 5G system may be a radio access network (radio access network, (R) AN), and the (R) AN device in the 5G system may be composed of a plurality of 5G- (R) AN nodes, and the 5G- (R) AN nodes may include: an access network of non-3 GPP, such as an Access Point (AP) of a WiFi network, a next generation base station (which may be collectively referred to as a new generation radio access network node (NG-RAN node), wherein the next generation base station includes a new air interface base station (NR node b, gNB), a new generation evolved base station (NG-eNB), a gNB in a form of a Central Unit (CU) and a Distributed Unit (DU), etc.), a transceiving point (transmission receive point, TRP), a transmission point (transmission point, TP), or other nodes.

As shown in fig. 2, the 5G core network (5G core/new generation core,5 GC/NGC) includes a plurality of functional units such as an access and mobility management function (Access and Mobility Management Function, AMF) network element, a session management function (Session Management Function, SMF) network element, a user plane function (User Plane Function, UPF) network element, an authentication server function (Authentication Server Function, AUSF) network element, a policy control function (Policy Control Function, PCF) network element, an application function (Application Function, AF) network element, a unified data management function (unified data management, UDM) network element, a network slice selection function (Network Slice Selection Function, NSSF) network element, and the like.

The AMF network element is mainly responsible for services such as mobility management, access management, etc., where the AMF network element may also provide transmission of location service messages between the UE and the location management function (Location management function, LMF) network element, and between the RAN and the LMF network element.

The SMF network element is mainly responsible for session management, UE address management and allocation, dynamic host configuration protocol functions, selection and control of user plane functions, etc. The UPF is mainly responsible for packet routing forwarding, packet filtering, performing quality of service (quality of service, qoS) control related functions, etc. for external connection to a Data Network (DN). The AUSF is mainly responsible for authentication functions for terminal devices, etc. The PCF network element is mainly responsible for providing a unified policy framework for network behavior management, providing policy rules for control plane functions, obtaining registration information related to policy decisions, etc. It should be noted that these functional units may work independently, or may be combined to implement some control functions, such as access control and mobility management functions for access authentication, security encryption, location registration, etc. of the terminal device, and session management functions for setting up, releasing, changing, etc. of the user plane transmission path.

The functional units in the 5GC may communicate through a next generation Network (NG) interface, for example: the UE can transmit control plane information with AMF network element through NG interface 1 (N1), the RAN device can establish user plane data transmission channel with UPF through NG interface 3 (N3), the AN/RAN device can establish control plane signaling connection with AMF network element through NG interface 2 (N2), UPF can interact with SMF network element through NG interface 4 (N4), UPF can interact user plane data with data network DN through NG interface 6 (N6), AMF network element can interact with SMF network element through NG interface 11 (N11), SMF network element can interact with PCF network element through NG interface 7 (N7), AMF network element can interact with AUSF through NG interface 12 (N12). It should be noted that fig. 2 is only an exemplary architecture diagram, and the network architecture may include other functional units besides the functional units shown in fig. 2.

The network architecture shown in fig. 2 is a reference point-based network architecture, and the network architecture is a network architecture in a non-roaming scenario, although the method of the present application may also be applied in a roaming scenario, and the network architecture is not limited to a reference point-based network architecture, and may also be a network architecture based on a server interface.

Fig. 3 is a schematic diagram of a 5G network architecture based on a service interface in a non-roaming scenario, where, as shown in fig. 3, a core network of the 5G system further includes a NEF and an NRF network element. In the scenario based on the service interface, part of network elements in the 5G core network are connected in a bus manner, as shown in fig. 3, an AUSF network element, an AMF network element, an SMF network element, an AF network element, a UDM, a PCF network element, a network storage function (Network Repository Function, NRF) network element, a network opening function (Network Exposure Function, NEF) network element and an NSSF network element are interconnected by a bus, where the network elements are interconnected by a bus and adopt a service interface, for example, the AUSF network element is connected to the bus by a Nausf interface, the AMF network element is connected to the bus by a Namf interface, the SMF network element is connected to the bus by a Nsmf interface, the AF network element is connected to the bus by a NAF network element interface, the UDM is connected to the bus by a dm interface, the PCF network element is connected to the bus by an NPCF network element interface, the NRF is connected to the bus by an nrrf interface, and the nesf is connected to the bus by an nnsf interface.

The network architecture and the service scenario described in the embodiments of the present application described above are for more clearly describing the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

Based on the above description, the following description is given of the related art background of the present application:

provision for 3GPP PS Dataoff exemption services is in accordance with chapter 10 of the third Generation partnership project (3rd Generation Partnership Project,3GPP) Specification 22.011. When the user activates 3GPP PS Dataoff, the network should stop the relevant charging actions for the Data traffic, allowing the user to use only the relevant services specified by the operator.

Wherein PS Data off is a packet switched Data interrupt, wherein PS refers to Packet Switch (PS), and the above-described user activation of 3GPP PS Data off can be understood as the user turning off the Data traffic of the terminal device. In a popular manner, the above-described procedure is understood to mean that when the data traffic of the terminal device is turned off, the terminal device can inform the network device of the turn-off of the data traffic, and then the network device needs to stop charging of the data traffic, and only allow the user to use a specified service, such as making a call, sending a short message, and so on.

And correspondingly, when the user deactivates the 3GPP PS Dataoff, it can be understood that the user turns on the Data traffic of the terminal device, and the network needs to restart the related charging action on the Data traffic and allow the user to use the related network service, so it can be understood that the terminal device needs to inform the network device in time whether the PS Dataoff is activated or deactivated.

For this feature, signaling of the state change of PS Data off is then particularly important, as can be seen from the following processing of the relevant signaling of the state indication of PS Data off by 3GPP specification 24.501.

1. When the location of the terminal device is in a non-allowed Area (including a plurality of TAs) defined by the network device, the general service request will not be allowed to be transmitted, but the terminal device may transmit signaling of PS Data off state change.

2. When network congestion occurs, general signaling and Data requests will not be allowed to be sent, but the terminal device can send signaling of PS Data off state change

3. When the network device indicates that the terminal device needs to do network slice related authentication and does not allocate any allowed network slices, the normal data service request will not be allowed to be sent, but the terminal device can send signaling of PS data off state change.

4. When the terminal device is outside the local area data network (Local Area Data Network, LADN) area, data and signaling related to this LADN session will not be allowed to be sent, but if signaling of PS data off state changes related to the LADN session is allowed to be sent.

It will be appreciated based on the foregoing that signaling of PS data off state changes is a very high priority signaling.

The above-described non-allowed Area (non-allowed Area) is described herein, for example, the network device may configure a service Area restriction (Service Area Restrictions) defining which Area-down terminal devices may communicate with the network device and which Area-down terminal devices may not initiate communication with the network device; which is specifically divided into an allowable Area (allowed Area) and an impermissible Area (non-allowed Area)

In an allowed Area (allowed Area), the terminal device allows normal service communication with the network device.

In a non-allowed Area (non-allowed Area), neither the terminal device nor the network device allows initiation of Service Request (Service Request) or session management (SM, session Management) signaling to acquire user traffic; the terminal equipment cannot trigger network selection or cell reselection due to entering a non-allowed area; when the terminal equipment is in the CM-CONNECTED and RRC-Inactive states, the radio resource control (Radio Resource Control, RRC) flow is the same as that in the allowed region; RM procedure is also the same as in the allowed area; if the network equipment pages, the terminal equipment also initiates Service-Request to respond to the paging of the network. In short, the terminal device may reside as if it were under the allowed area, but cannot make a service (e.g., make a call, surf the internet, etc.).

The CM mentioned above means (connection management ), the CONNECTED means CONNECTED state, and the Inactive means Inactive state.

On the basis of the above description, a description is made below of a TA, in which a Tracking Area (Tracking Area) is a newly established concept for location management of a UE. When the UE is in an idle state, the core network can know the tracking area where the UE is located, and meanwhile, when the UE in the idle state needs to be paged, paging is carried out on all cells of the tracking area registered by the UE.

The TAI is a tracking area identifier (Tracking Area Identity) and is composed of a public land mobile network (Public Land Mobile Network, PLMN) identifier and a tracking area code (Tracking Area Code, TAC). I.e. tai=plmn id+tac.

Wherein, a plurality of TAs can form a TA list (TA list) and be simultaneously allocated to a UE, and the UE does not need to perform TA update when moving in the TA list, so as to reduce frequent interaction with the network;

when the UE enters a new TA area that is not in its registered TA list, a TA update needs to be performed, and the mobility management entity (Mobility Management Entity, MME) or AMF reallocates a set of TAs to the UE, which may also contain some of the TAs in the original TA list.

Wherein TA is a cell-level configuration, multiple cells can configure the same TA, and one cell can only belong to one TA.

Currently, one or more (up to 16) complete Tracking Areas (TAs) are contained in one service area limitation (Service Area Restrictions). For example, UE subscription data on UDM may include a service area restriction, which may include a permitted area and/or a non-permitted area, which may be identified using TAI and/or other geographic information (e.g., latitude and longitude, zip code, etc.). When addressed to the UE, the network device maps these areas to a TA list before the UE. If a UE accesses a service impermissible region, the TA contained in the registration region of the UE is necessarily in the impermissible region of the UE; if a UE accesses a service allowed zone, the TA contained in the registration zone of the UE must be in the allowed zone of the UE.

The UDM stores the service limited area information of the UE as a part of the subscription data of the UE, and PCF of the service network can further adjust the service limited area of the UE according to the network strategy; in the registration process, if the AMF does not already store the service limited area data of the UE, the AMF can acquire the service limited area data of the user from the UDM; the serving AMF may force the service area limited function of the UE.

For example, it can be understood with reference to fig. 4, and fig. 4 is a schematic diagram of a non-allowable area provided in an embodiment of the present application.

As shown in fig. 4, it is assumed that the current service area limitation (Service Area Restrictions) includes 5 TAs, which are respectively TAI1, TAI2, TAI3, TAI4, and TAI5, wherein TAI1, TAI2, and TAI3 may be mapped to TA list 1, and TAI1, TAI4, and TAI5 may be mapped to TA list 2. And, for example, TA11, TAI2, TAI5 may be allowed areas, and corresponding TA14, TAI3 may be non-allowed areas.

In one possible implementation, the registration accept message may include Service area list at REGISTRATION ACCEPT. Among these, service area list may include allowed areas, and if the allowed areas are listed as TAI1, TAI2, and TAI5 in Service area list, then TAI3 and TAI4 may be disallowed areas, as shown in fig. 4 above. Alternatively, if Service area list is not included in the REGISTRATION ACCEPT message, any of TAI1 to TAI5 is the permitted area.

On the basis of the above description, transmission of signaling of PS data off state indication is described below. First, the 5G non-access stratum (Non Access Stratum, NAS) protocol includes 5GMM and 5GSM, where MM refers to (Mobility Management ), and SM refers to (Session Management, session management).

According to the provision of the 3GPP for PS data off exemption service, the signaling indicated by the PS data off state is set in the "Extended protocol configuration options" (extended protocol configuration option) parameter of the message of the session management layer 5GSM, and the message of the session management layer 5GSM at the terminal equipment side can be analyzed only by the SMF network element corresponding to the network side.

However, the mobility management layer 5GMM also has some limitations, and the network side network element AMF corresponding to the mobility management layer 5GMM needs to check these limitations, for example, when the terminal device is located in the non-allowed area, the AMF receives the general service request of the terminal device, and refuses the service request of the terminal device due to the fact that the UE is located in the limited area.

When the terminal device is located in the non-allowed region and is in the idle state, it needs to enter the connected state before transmitting PDU session modification request (PDU session modification request) to the SMF when signaling of PS data off state change is to be transmitted.

If the terminal device is to enter the connection state, a Service Request message needs to be sent to the AMF, where a Service Type IE (Service Type) is set to "Elevated Signalling" (signaling with high priority), and when the AMF receives such signaling, according to "Elevated Signalling", even if the terminal device is located in a non-allowed area, the Service Request of the terminal device is not rejected, but the Service Request of the terminal device is assisted to complete the establishment of the link, so that the terminal device can send PS data off state change signaling.

However, there is a special case currently, for example, it can be understood with reference to fig. 5, and fig. 5 is a schematic implementation diagram of the repeated execution SR procedure provided in the embodiment of the present application.

Referring to fig. 5, the terminal device may transmit a Service Request (Service Request) message in which a Service Type (Service Type) is set to "signaling".

Specifically, when the terminal device wants to send a signaling of PS data off state change, the terminal device determines that the terminal device is in an idle state and not in a non-allowed area, and then initiates an SR procedure to establish a NAS connection. Since the terminal device considers that it is not currently in the non-allowed area, the Service Type (Service Type) in the Service Request (Service Request) message sent by the terminal device is set to "signaling".

If it happens at this time that the non-allowed area of the AMF side changes, referring to fig. 5, the AMF may send a page (paging) to the terminal device to notify the situation that the non-allowed area of the AMF side changes.

At this point, the UE ignores the page and continues the already initiated SR flow. Specifically, while the UE is performing the initiated SR procedure, if the UE receives the paging message, the UE will continue to perform the SR procedure. If the current SR procedure initiated connection is said to be barred for the SR procedure, the UE will process the pending paging message, otherwise the UE will ignore the page.

Based on the above description, it may be determined that the terminal device sends a Service Request message to the AMF, and after the AMF receives the Service Request message of the terminal, the AMF may determine that Service type ie=mapping in the Service Request message, instead of Mobile terminated (MT, called mobile station), determines that the SR is not a page before responding, but may continue to process the SR flow.

It can be appreciated that if the UE initiates the SR flow in response to the page of the AMF, the Service type IE in the Service Request message is equal to Mobile terminated.

Wherein the AMF continues to process the SR flow, referring to fig. 5, the AMF may send a configuration update command (Configuration Update Command) to the UE, wherein the configuration update command is used to update the disallowed area list, or the configuration update command is sent after the SR flow is completed.

If the terminal device is located in the new non-allowed area, that is, the location where the terminal device is located is preceded by the allowed area, but now becomes non-allowed area, the AMF refuses the Service Request of the terminal device because the Service type ie=mapping in the Service Request message at this time, refer to fig. 5.

Referring to fig. 5, the amf may send a Service Reject (Service Reject) message to the terminal device, and when the terminal device receives the Service Reject message, if a Service type IE in the SR message is not "Elevated Signalling", the terminal device may enter a state of 5 GMM-registered-non-ALLOWED-Service (5 GMM registration disallowed Service), and wait for release of the N1NAS signaling connection, and wait for mobility and periodic registration update procedures to be performed. If the Service type IE in the SR message is set to "Elevated Signalling", the UE should not re-initiate the SR procedure until the UE enters the allowed region or leaves the disallowed region unless it is emergency Service, high priority access, or response to a page or notification.

The terminal device therefore waits for the N1NAS signaling connection to be released before executing the registration update procedure. Then, the UE determines that the UE is located in the non-allowed area according to the received new non-allowed area, and the signaling to be sent is the signaling of PS data off state change, and triggers the Service Request procedure again, and sets the Service Type in the Service Request message to "Elevated Signalling" (high priority signaling) to reestablish the connection.

When the AMF receives the Service Request message sent by the terminal device again, according to the Service Type being "Elevated Signalling", the Service Request of the terminal device is not rejected, but a Service accept (SERVICE ACCEPT) message is sent to the terminal device to establish a connection.

Based on the above description, it can be determined that the above procedure causes the UE and the AMF to repeatedly perform the SR procedure, thereby causing an unnecessary signaling procedure and prolonging the processing time of the signaling of the PS data off state change with higher priority. Moreover, if there is downstream data in the process, this part of the data is still to be charged, which would waste user traffic.

Aiming at the technical problems in the prior art, the application provides the following technical conception: when the terminal equipment sends the signaling of PS data off state change, the Service Type in the Service Request message is uniformly set to Elevated Signalling, or the AMF is appointed not to reject the Service Request of the terminal equipment, so that the repeated execution of the SR process by the terminal equipment and the AMF can be effectively avoided.

On the basis of the above description, the communication method provided in the present application will be described in detail with reference to fig. 6, and fig. 6 is a flowchart of the communication method provided in the embodiment of the present application.

As shown in fig. 6, the method includes:

s601, receiving a service request message sent by a terminal device, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data.

In this embodiment, the network device may receive a Service Request message sent by the terminal device, where the Service Request message may be a Service Request message described above. In one possible implementation, the terminal device may initiate an SR procedure, for example, when there is corresponding signaling or data to be sent, thereby sending a service request message to the network device. Or, the terminal device may also initiate the SR process in response to paging of the network device, and the embodiment does not limit a specific case that the terminal device initiates the SR process, and may select according to actual needs, where the terminal device initiates the SR process, a Service Request message may be sent to the network device.

In a possible implementation manner, the network device in this embodiment may be, for example, an AMF network element, so that the terminal device may, for example, send a service request message to the AMF network element. Or in other possible implementations, the specific implementation manner of the network device may be further extended according to actual requirements.

As can be determined based on the above description, a Service Type (Service Type) is included in the Service request message, and in this embodiment, the Service Type may be any one of a first Type, a second Type, and a third Type.

The first type is used for indicating that the information to be sent by the terminal device is a general signaling, and the first type may be, for example, signaling described above; and, the second type is used to indicate that the information to be sent by the terminal device is high priority information, and the second type may be Elevated Signalling described above, for example; and the third type is used for indicating the terminal equipment to send the user data. The third type may be, for example, data.

It can be appreciated that the Service Type (Service Type) in this embodiment is mainly determined according to what Service triggers the SR process currently, for example, if the SR process is triggered to send signaling, the Service Type may be signaling or Elevated Signalling, for example; if the SR procedure is triggered to send data, the Service Type may be data, for example. When signaling and data are sent, the corresponding transport layers are different.

It should be noted that, taking the network device as an AMF network element as an example, the information to be sent by the terminal device described herein is MM information sent by the terminal device to the AMF or SM information to be sent to the SMF after the NAS connection is established. And when the third Type is data, the scenario in this embodiment may be that there is exactly user data to send when the terminal device is to notify the network to deactivate PS data off, that is, in this case, service Type may be set to data.

In one possible implementation, the specific implementation of the service type in the service request message may depend, for example, on what information the terminal device needs to send, or may also depend on the location where the terminal device is currently located, so the specific implementation of the service type is not particularly limited in this embodiment.

In the actual implementation process, the service message may be, in addition to the first type, the second type, and the third type described above, and the specific implementation of the service message may also be, for example, corresponding setting and expansion according to the information to be sent by the terminal device, which is not limited in this embodiment.

S602, establishing non-access stratum (NAS) connection with terminal equipment according to a service request message; the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority first signaling.

After receiving the service request message, the network device in this embodiment establishes NAS connection with the terminal device according to the service request message, and it can be understood that the network device in this embodiment does not reject the service request of the terminal device, and establishes NAS connection with the terminal device, so that the terminal device and the network device can be effectively prevented from repeatedly performing the SR process.

After the network device and the terminal device establish the NAS connection, the terminal device may send information based on the NAS connection, and in a possible implementation manner, the terminal device may send information to the SMF network element based on the NAS connection, and accordingly, the SMF network element may receive the information sent by the terminal device based on the NAS connection. In this embodiment, the information sent by the terminal device may include a first signaling with a high priority, where the first signaling with a high priority in this embodiment may be, for example, a signaling with a PS data off state changed as described in the foregoing embodiment, or may also be any signaling with a high priority, where the signaling with a high priority specifically includes which signaling may be selected according to an actual requirement, and it may be understood that all the more important signaling that needs to be sent in time may be used as the signaling with a high priority in this embodiment.

The communication method provided by the embodiment of the application comprises the following steps: and receiving a service request message sent by the terminal equipment, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that the information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data. According to the service request message, establishing non-access stratum (NAS) connection with the terminal equipment; the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority signaling. By setting the service type in the service request message to be the second type and/or the network device establishes NAS connection with the terminal device according to the service request message all the time, that is, does not reject the service request of the terminal device, the problem that the processing time of the signaling of the PS Data off state change caused by repeatedly executing the SR process is prolonged can be effectively avoided.

Based on the above embodiments, it can be understood that the terminal device in this embodiment is in an idle state, so the terminal device needs to establish a connection with the network device. And based on the above description it may be determined that the service request message includes a message type, and in one possible implementation, the service type in the service request message may be determined, for example, by the terminal device according to information to be sent by the terminal device; or, the service type in the service request message may be determined by the terminal device according to the location where the terminal device is located, or the service type in the service request message may be determined by the terminal device according to the information to be sent by the terminal device and the location where the terminal device is located.

In the following description, the network device is an AMF network element, and the implementation manner is similar when the network device is the rest of the implementations.

In one possible implementation manner, the service type in the service request message in this embodiment is determined by the terminal device according to the information to be sent by the terminal device.

For example, if the information to be sent by the terminal device is the first signaling with high priority, the service type is the second type.

For example, it may be understood with reference to fig. 7, where fig. 7 is a schematic diagram of implementation of determining a service type according to an embodiment of the present application.

As shown in fig. 7, as long as the information to be sent by the terminal device is the first signaling of high priority, for example, the signaling of PS Data off state change introduced above, the Service Type (Service Type) in the Service Request (Service Request) message is set to the second Type (Elevated Signalling). Based on the above description, it can be determined that when the Service Type is the second Type (Elevated Signalling), the AMF does not reject the Service request of the terminal device, and thus the AMF can establish a NAS connection with the terminal device.

And it should be further noted that, in the prior art, if the terminal device is to send the first signaling with high priority, when determining the Service Type (Service Type) in the Service Request (Service Request) message, the determination is made according to what area the current location of the terminal device is. Specifically, when the terminal device is in the disallowed area, the Service Type is set to Elevated Signalling, but when the terminal device is in the allowed area, the Service Type is set to signaling. It is because of this that the AMF refuses the service request of the terminal device only in the special case introduced above.

However, in this embodiment, regardless of the area where the terminal device is located, the Service Type is set to Elevated Signalling as long as the terminal device is to send the first signaling with high priority. In this way, the AMF will not reject the service request of the terminal device, thereby avoiding the repeated execution of the SR process by the terminal device and the AMF.

For example, in one example, when the terminal device generates the Service request message, the location of the terminal device is an allowed area, in this embodiment, the Service Type is set to Elevated Signalling, so that the AMF establishes a connection with the terminal device, and further, the SR procedure is repeated by the terminal device and the AMF network element because the terminal device sets the Service Type to a general signaling in the allowed area and then allows the area to change. In this embodiment, when the signaling with high priority needs to be sent, the Service Type is directly set to Elevated Signalling, so that the above problem can be effectively avoided.

In another possible implementation manner, the service type in the service request message may also be determined by the terminal device according to the location where the terminal device is located.

For example, the terminal device determines that the location where the terminal device is located is an allowed area, and the service type in the service request message is the first type or the third type.

For example, it may be understood with reference to fig. 8, where fig. 8 is a second implementation schematic diagram of determining a service type according to an embodiment of the present application.

Specifically, the terminal device may determine whether the location of the terminal device is an allowed area, as shown in fig. 8, if the terminal device determines that the area of the terminal device is an allowed area, the terminal device will set the service type in the service request message to be the first type (signaling) or the third type (data), and specifically, the first type or the third type may depend on whether the information sent by the terminal device is signaling or data.

It will be appreciated that in this implementation, even if the information to be sent by the terminal device is a high priority signaling, such as PS Data off status change signaling, the Service Type is set to signaling, similar to the prior art, because the terminal device determines the Service Type according to the location of the terminal device.

Similarly, when the Service Type is signaling or data, the AMF may reject the Service request of the terminal device according to the actual situation, which may cause repeated execution of the SR process, which is a defect in the prior art.

However, in the technical solution of the present application, the AMF does not reject the service request of the terminal device, but establishes a NAS connection with the terminal device according to the service request message.

In one possible implementation, the AMF may establish a non-access stratum NAS connection with the terminal device according to the service request message when it is determined that the first condition is satisfied.

Wherein the first condition comprises:

the AMF initiates paging to the terminal equipment, and the AMF has signaling to be sent to the terminal equipment; and/or the number of the groups of groups,

the allowed area is updated, the AMF determines that the updated allowed or disallowed area is not yet sent to the terminal equipment, and the location of the terminal equipment is located in the allowed area before updating or in the disallowed area before updating.

As can be appreciated with reference to fig. 8, when the Service Type is signaling or data, if the AMF determines that paging has been initiated to the terminal device and the AMF determines that there is still signaling to be sent to the terminal device, then in this case, the AMF does not reject the Service request of the terminal device, regardless of whether the terminal device is in an allowed or a disallowed area, and a NAS connection is established with the terminal device. And/or the number of the groups of groups,

when the Service Type is signaling or data, if the AMF determines that an allowed area (allowed area) has been updated, but the updated allowed area has not been transmitted to the terminal device, the AMF determines whether to reject the Service request of the terminal device according to the allowed area before updating in this case.

In one possible implementation, if the location of the terminal device is in the allowed area before the update, the AMF does not reject the service request of the terminal device and establishes a NAS connection with the terminal device.

In another possible implementation, if the location of the terminal device is located in a non-allowed area before the update, that is, the terminal device initiates an SR flow in the non-allowed area, and the Service Type is signaling or data, then in this case, the AMF may reject the Service request of the terminal device. However, it should be noted that, in the present case, the case of AMF rejection is not the case where the SR procedure is repeatedly performed as described above, and in this case, the terminal device initiates the SR procedure corresponding to the general signaling in the disallowed area, so that the AMF currently rejects the service request of the terminal device is correct.

In this embodiment, the terminal device determines the service type in the service request message according to the location of the terminal device, and then the AMF may determine whether the current AMF or the terminal device meets the corresponding first condition, and when determining that the condition is met, the AMF does not reject the service request of the terminal device, but establishes NAS connection with the terminal device, so as to avoid the terminal device and the AMF from repeatedly executing the SR procedure.

In addition, the service type in the service request message may be determined by the terminal device according to the information to be sent by the terminal device and the location where the terminal device is located.

Specifically, if the message to be sent by the terminal device is a signaling with high priority, and the terminal device determines that the location where the message is located is a disallowed area, the terminal device may set the service type in the service request message to be the second type.

For example, the terminal device needs to send a signaling of PS Data off state change, and the terminal device is currently located in the non-allowed area, then the terminal device may set the Service Type to Elevated Signalling, so that the AMF will not reject the Service request of the terminal device, which is similar to the above description, and will not be repeated here.

The foregoing embodiments describe an implementation manner on the network device side, and the following description is made with reference to fig. 9, where fig. 9 is a second schematic flow chart of the communication method provided in the embodiment of the present application.

As shown in fig. 9, the method includes:

s901, sending a service request message to a network device, where the service type in the service request message is any one of a first type, a second type, and a third type, where the first type is used to indicate that information to be sent is a general signaling, the second type is used to indicate that information to be sent is a signaling with a high priority, and the third type is used to indicate that information to be sent is user data.

In this embodiment, the terminal device may send a service request message to the network device, and the implementation of the service request message is similar to that described above.

S902, establishing NAS connection with the network equipment, wherein the NAS connection is used for the terminal equipment to send information, and the information comprises a first signaling with high priority.

Based on the above description, it can be determined that when the terminal device sends the first signaling with high priority, the network device in this embodiment does not reject the terminal device, but establishes a NAS connection with the terminal device, so the terminal device can establish a NAS connection with the AMF. The terminal device may then send the high priority first signaling based on the NAS connection in a manner similar to that described above and will not be described again here.

Various possible implementation manners of the terminal device side are similar to those of the AMF side, and are not described herein.

The communication method provided by the embodiment of the application comprises the following steps: and sending a service request message to the network equipment, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that the information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data. And connecting with an AMF network device NAS. The NAS connection is used for sending information by the terminal equipment, wherein the information comprises a first signaling with high priority. By setting the service type in the service request message to be the second type and/or the AMF network element establishes NAS connection with the terminal device according to the service request message all the time, that is, does not reject the service request of the terminal device, the problem that the processing time of the signaling of PS Data off state change caused by repeatedly executing the SR process is prolonged can be effectively avoided.

In summary, the communication method provided by the application can avoid the repeated execution of the SR process by the terminal device and the network device, thereby effectively avoiding the problem that the processing time of the signaling of the PS Data off state change is prolonged caused by the repeated execution of the SR process, and achieving the purposes of saving the signaling, accelerating the transmission of the signaling of the PS Data off state change and saving the traffic.

Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application. Referring to fig. 10, the communication apparatus 100 may include a receiving module 1001 and a connecting module 1002, wherein,

a receiving module 1001, configured to receive a service request message sent by a terminal device, where a service type in the service request message is any one of a first type, a second type, and a third type, where the first type is used to indicate that information to be sent is a general signaling (, the second type is used to indicate that information to be sent is a signaling with a high priority, and the third type is used to indicate that information to be sent is user data;

a connection module 1002, configured to establish a non-access stratum NAS connection with the terminal device according to the service request message;

In a possible implementation manner, the terminal device is in an idle state, wherein the service type is determined by the terminal device according to information to be sent by the terminal device and/or a location where the terminal device is located.

In a possible implementation manner, the information to be sent by the terminal device is a first signaling with high priority, and the service type in the service request message is the second type.

In one possible implementation manner, the location of the terminal device is an allowed area.

In a possible implementation manner, the terminal device determines that the location of the terminal device is an allowed area, and the service type in the service request message is a first type or a third type.

In one possible implementation, the connection module 1002 is specifically configured to:

and when the first condition is determined to be met, establishing non-access stratum (NAS) connection with the terminal equipment according to the service request message.

In one possible embodiment, the first condition includes:

the network device has initiated a page to the terminal device and the network device has signaling to send to the terminal device; and/or the number of the groups of groups,

And the network equipment determines that the updated allowed area or the updated disallowed area is not yet sent to the terminal equipment, and the position of the terminal equipment is located in the allowed area before updating or the disallowed area before updating.

In one possible implementation, the high priority first signaling is signaling informing of a state change of a packet switched data interrupt.

In one possible implementation, the network device is an AMF network element.

The communication device provided in the embodiment of the present application may execute the technical solution shown in the foregoing method embodiment, and its implementation principle and beneficial effects are similar, and will not be described herein again.

Fig. 11 is a schematic diagram of a second structure of the communication device according to the embodiment of the present application. Referring to fig. 11, the communication device 110 may include a transmitting module 1101 and a connecting module 1102, wherein,

a sending module 1101, configured to send a service request message to a network device, where a service type in the service request message is any one of a first type, a second type, and a third type, where the first type is used to indicate that information to be sent is a general signaling, the second type is used to indicate that information to be sent is a signaling with a high priority, and the third type is used to indicate that information to be sent is user data;

A connection module 1102, configured to establish a NAS connection with the network device; the NAS connection is used for sending information by the terminal equipment, wherein the information comprises a first signaling with high priority.

In a possible implementation manner, the terminal device is in an idle state, wherein the service type in the service request message is determined by the terminal device according to information to be sent by the terminal device and/or a position where the terminal device is located.

In one possible implementation, the connection module 1102 is specifically configured to:

when the first condition is satisfied, a NAS connection is established with the network device.

In one possible embodiment, the first condition includes:

the allowed area is updated, the terminal equipment does not receive the updated allowed area or the updated disallowed area, and the position of the terminal equipment is located in the allowed area before updating or the disallowed area before updating.

In one possible implementation, the network device is an AMF network element.

Fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application. Referring to fig. 12, the terminal device 120 may include: a transceiver 21, a memory 22, a processor 23. The transceiver 21 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a transmitter, transmit port, transmit interface, or the like, and the receiver may also be referred to as a receiver, receive port, receive interface, or the like. The transceiver 21, the memory 22, and the processor 23 are illustratively interconnected by a bus 24.

The memory 22 is used for storing program instructions;

the processor 23 is configured to execute the program instructions stored in the memory, so as to cause the terminal device 120 to execute any of the communication methods described above.

Wherein the receiver of the transceiver 21 is operable to perform the receiving function of the terminal device in the communication method described above.

Fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application. Referring to fig. 13, the network device 130 may include: a transceiver 31, a memory 32, a processor 33. The transceiver 31 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a transmitter, transmit port, transmit interface, or the like, and the receiver may also be referred to as a receiver, receive port, receive interface, or the like. Illustratively, the transceiver 31, the memory 32, and the processor 33 are interconnected by a bus 34.

The memory 32 is used for storing program instructions;

the processor 33 is configured to execute the program instructions stored in the memory, so as to cause the network device 130 to execute any of the communication methods described above.

Wherein the receiver of the transceiver 31 is operable to perform the receiving function of the network device in the communication method described above.

Embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the above-described communication method when the computer-executable instructions are executed by a processor.

Embodiments of the present application may also provide a computer program product, which may be executed by a processor, and when the computer program product is executed, may implement a communication method performed by any of the above-described terminal devices or network devices.

The communication device, the computer readable storage medium and the computer program product of the embodiments of the present application may execute the communication method executed by the terminal device and the network device, and specific implementation processes and beneficial effects of the communication device, the computer readable storage medium and the computer program product are referred to above and are not described herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The aforementioned computer program may be stored in a computer readable storage medium. The computer program, when executed by a processor, implements steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

A communication method, applied to a network device, characterized in that,

receiving a service request message sent by a terminal device, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data;

establishing non-access stratum (NAS) connection with the terminal equipment according to the service request message;

the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority first signaling.
The method according to claim 1, wherein the terminal device is in an idle state, wherein the service type is determined by the terminal device according to information to be sent by the terminal device and/or a location where the terminal device is located.
The method according to claim 2, wherein the information to be sent by the terminal device is a first signaling with high priority, and the service type in the service request message is the second type.
A method according to claim 3, wherein the location of the terminal device is an allowed area.
The method according to claim 2, wherein the terminal device determines that the location where the terminal device is located is an allowed area, and the service type in the service request message is the first type or the third type.
The method of claim 5, wherein establishing a non-access stratum, NAS, connection with the terminal device according to the service request message comprises:

and when the first condition is determined to be met, establishing NAS connection with the terminal equipment according to the service request message.
The method of claim 6, wherein the first condition comprises:

The network device has initiated a page to the terminal device and the network device has signaling to send to the terminal device; and/or the number of the groups of groups,

and the network equipment determines that the updated allowed area or the updated disallowed area is not yet sent to the terminal equipment, and the position of the terminal equipment is located in the allowed area before updating or the disallowed area before updating.
The method according to any of claims 1-7, wherein the high priority first signaling is signaling informing about a state change of a packet switched data interrupt.
The method according to any of claims 1-8, wherein the network device is an access and mobility management function, AMF, network element.
A communication method is applied to terminal equipment, and is characterized in that,

a service request message is sent to a network device, wherein the service type in the service request message is any one of a first type, a second type and a third type, the first type is used for indicating that information to be sent is a general signaling, the second type is used for indicating that the information to be sent is a signaling with high priority, and the third type is used for indicating that the information to be sent is user data;

Establishing NAS connection with the network equipment;

the NAS connection is used for sending information by the terminal equipment, wherein the information comprises a first signaling with high priority.
The method according to claim 10, wherein the terminal device is in an idle state, wherein the service type is determined by the terminal device according to information to be sent by the terminal device and/or a location where the terminal device is located.
The method according to claim 11, wherein the information to be sent by the terminal device is a first signaling with high priority, and the service type in the service request message is the second type.
The method of claim 12, wherein the location of the terminal device is an allowed area.
The method according to claim 11, wherein the terminal device determines its location as an allowed area, and the service type in the service request message is a first type or a third type.
The method of claim 14, wherein the establishing a NAS connection with the network device comprises:

when the first condition is satisfied, a NAS connection is established with the network device.
The method of claim 15, wherein the first condition comprises:

the network device has initiated a page to the terminal device and the network device has signaling to send to the terminal device; and/or the number of the groups of groups,

the allowed area is updated, the terminal equipment does not receive the updated allowed area or the updated disallowed area, and the position of the terminal equipment is located in the allowed area before updating or the disallowed area before updating.
The method according to any of claims 10-16, wherein the high priority first signaling is signaling informing about a state change of a packet switched data interrupt.
The method according to any of claims 10-17, wherein the network device is an AMF network element.
A communication device is applied to network equipment, and is characterized in that,

a receiving module, configured to receive a service request message sent by a terminal device, where a service type in the service request message is any one of a first type, a second type, and a third type, where the first type is used to indicate that information to be sent is a general signaling (, the second type is used to indicate that information to be sent is a signaling with a high priority, and the third type is used to indicate that information to be sent is user data;

The connection module is used for establishing NAS connection with the terminal equipment according to the service request message;

the NAS connection is used for receiving information sent by the terminal equipment based on the NAS connection, and the information comprises high-priority first signaling.
The apparatus of claim 19, wherein the terminal device is in an idle state, and wherein the service type is determined by the terminal device according to information to be sent by the terminal device and/or a location where the terminal device is located.
The apparatus of claim 20, wherein the information to be sent by the terminal device is a first signaling with high priority, and the service type in the service request message is the second type.
The apparatus of claim 21, wherein the location of the terminal device is an allowed area.
The apparatus of claim 20, wherein the terminal device determines that the location of the terminal device is an allowed area, and the service type in the service request message is a first type or a third type.
The apparatus of claim 23, wherein the connection module is specifically configured to:

And when the first condition is determined to be met, establishing NAS connection with the terminal equipment according to the service request message.
The apparatus of claim 24, wherein the first condition comprises:

the network device has initiated a page to the terminal device and the network device has signaling to send to the terminal device; and/or the number of the groups of groups,

and the network equipment determines that the updated allowed area or the updated disallowed area is not yet sent to the terminal equipment, and the position of the terminal equipment is located in the allowed area before updating or the disallowed area before updating.
The apparatus according to any of claims 19-25, wherein the high priority first signaling is signaling informing of a state change of a packet switched data interrupt.
The apparatus according to any of claims 19-26, wherein the network device is an AMF network element.
A communication device is applied to terminal equipment, and is characterized in that,

a sending module, configured to send a service request message to a network device, where a service type in the service request message is any one of a first type, a second type, and a third type, where the first type is used to indicate that information to be sent is a general signaling, the second type is used to indicate that information to be sent is a signaling with a high priority, and the third type is used to indicate that information to be sent is user data;

A connection module, configured to establish NAS connection with the network device;

the NAS connection is used for sending information by the terminal equipment, wherein the information comprises a first signaling with high priority.
The apparatus of claim 28, wherein the terminal device is in an idle state, and wherein the service type is determined by the terminal device according to information to be sent by the terminal device and/or a location where the terminal device is located.
The apparatus of claim 29, wherein the information to be sent by the terminal device is a first signaling with high priority, and the service type in the service request message is the second type.
The apparatus of claim 30, wherein the location of the terminal device is an allowed area.
The apparatus of claim 29, wherein the terminal device determines that the location of the terminal device is an allowed area, and wherein the service type in the service request message is the first type or the third type.
The apparatus of claim 32, wherein the connection module is specifically configured to:

when the first condition is satisfied, a NAS connection is established with the network device.
The apparatus of claim 33, wherein the first condition comprises:

the network device has initiated a page to the terminal device and the network device has signaling to send to the terminal device; and/or the number of the groups of groups,

the allowed area is updated, the terminal equipment does not receive the updated allowed area or the updated disallowed area, and the position of the terminal equipment is located in the allowed area before updating or the disallowed area before updating.
The apparatus according to any of claims 28-34, wherein the high priority first signaling is signaling informing of a state change of a packet switched data interrupt.
The apparatus according to any of claims 28-35, wherein the network device is an AMF network element.
A network device, comprising: a transceiver, a processor, a memory;

the memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory, causing the processor to perform the communication method of any one of claims 1 to 9.
A terminal device, comprising: a transceiver, a processor, a memory;

The memory stores computer-executable instructions;

the processor executing computer-executable instructions stored in the memory causing the processor to perform the communication method of any one of claims 10 to 18.
A computer-readable storage medium, in which computer-executable instructions are stored, which when executed by a processor are adapted to implement the communication method of any one of claims 1 to 9 or 10 to 18.
A computer program product comprising a computer program which, when executed by a processor, implements the communication method according to any one of claims 1 to 9 or 10 to 18.