CN114451053A

CN114451053A - Wireless communication method and device

Info

Publication number: CN114451053A
Application number: CN202080068564.2A
Authority: CN
Inventors: 陈磊; 龙毅; 李秉肇; 刘哲; 张萌
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-30
Filing date: 2020-07-15
Publication date: 2022-05-06
Also published as: WO2021063071A1; WO2021062730A1

Abstract

The application provides a wireless communication method and a device, and the method comprises the following steps: the terminal equipment determines that inter-modulation distortion (IMD) exists between the frequency band of the first serving cell and the frequency band of the second serving cell; sending a first message to a first access network device requesting release of a first radio resource control, RRC, connection or for requesting handover or for indicating a time division multiplexing, TDM, pattern, the TDM pattern being applied to a first serving cell; and the terminal equipment receives a second message from the first access network equipment, wherein the second message is used for indicating to release the first RRC connection or for indicating to switch or responding to the TDM pattern. The communication method provided by the application can reduce the influence caused by IMD problems and improve the accuracy of data transmission.

Description

Wireless communication method and device

This application claims priority from PCT patent application No. PCT/CN2019/109641 entitled "wireless communication method and apparatus", filed on 30.9.2019, which is incorporated herein by reference in its entirety.

Technical Field

The present application relates to the field of communications, and more particularly, to a wireless communication method and apparatus.

Background

Currently, more and more terminal devices, such as smart phones, can transmit signals simultaneously with two serving cells. For example, a terminal device that supports simultaneous insertion of two Subscriber Identity Module (SIM) cards, one SIM card for private services and the other SIM card for working services; or one SIM card is used for data services and the other SIM card is used for voice services. This traffic mode may be referred to as dual card mode. The dual cards may belong to the same mobile operator or different mobile operators, or the dual cards may belong to the same system or different systems. For example, the standards may include New Radio (NR), Long Term Evolution (LTE) system, Wideband Code Division Multiple Access (WCDMA) system, Code Division Multiple Access (CDMA) system, and global system for mobile communications (GSM) system. For a terminal device capable of performing signal transmission with two serving cells simultaneously, when the terminal device establishes Radio Resource Control (RRC) connection with both the two serving cells, the data transmission method in the prior art may cause inaccuracy of data transmission. For example, if there is an intermodulation distortion (IMD) problem in the frequency bands of the two serving cells, when the terminal device simultaneously performs uplink signal transmission with the two serving cells, downlink signal transmission performed between the terminal device and one of the serving cells may be affected, which may cause a decrease in the receiving sensitivity of the downlink signal, and further cause inaccurate data transmission. For another example, after the terminal device establishes RRC connection with both serving cells, a Power Headroom Report (PHR) changes, but the PHR report is not triggered again, so that the PHR obtained by the access network device is no longer accurate, and further, data transmission is inaccurate.

Disclosure of Invention

The application provides a wireless communication method and a wireless communication device, which can improve the accuracy of data transmission for terminal equipment supporting signal transmission with at least two serving cells simultaneously.

In a first aspect, a wireless communication method is provided, including: determining that an inter-modulation distortion (IMD) exists between the frequency band of the first serving cell and the frequency band of the second serving cell; sending a first message to a first access network device, where the first message is used to request release of a first Radio Resource Control (RRC) connection, or to request handover, or to indicate a Time Division Multiplexing (TDM) pattern, where the first RRC connection is an RRC connection established with the first access network device, the first access network device is an access network device to which the first serving cell belongs, and the TDM pattern is applied to the first serving cell; receiving a second message from the first access network device, the second message being used for indicating to release the first RRC connection, or for indicating handover, or for responding to the TDM pattern.

For example, when a first message is used to request release of a first RRC connection, the second message may be used to indicate release of the first RRC connection.

For another example, when the first message is used to request a handover, the second message may be used to indicate a handover.

For another example, when the first message is used to indicate a TDM pattern, the second message may be used to respond to the TDM pattern.

The above list is merely exemplary and is not intended to limit the present application. For example, when the first message is used to request release of the first RRC connection, the second message may also be used to indicate handover.

For another example, when the first message is used to request handover, the second message may also be used to indicate that the first RRC connection is released.

According to the scheme of the embodiment of the application, the terminal device can send the first message to the access network device after determining that the IMD exists, so that the first access network device releases the first RRC connection or switches the current serving cell or determines the TMD mode, the influence caused by IMD problems is reduced, and the accuracy of data transmission is improved. Specifically, the terminal device may send a first message to the access network device after determining that the IMD exists, so that the first access network device releases the first RRC connection, thereby avoiding the terminal device performing signal transmission with the first serving cell and the second serving cell at the same time, and reducing the influence caused by the IMD problem; or the terminal device sends the first message to the first access network device, so that the first access network device switches the current serving cell, that is, the frequency band for signal transmission between the terminal device and the first access network device is changed, and the influence caused by IMD problem is reduced; or the terminal equipment sends a first message to the first access network equipment to inform the first access network equipment of the TDM mode, so that the influence caused by IMD problems is reduced, and the accuracy of data transmission is improved.

With reference to the first aspect, in certain implementations of the first aspect, the first message includes a cause value indicating the presence of an IMD.

According to the scheme of the embodiment of the application, the reason value can assist the first access network equipment to make a decision. The first access network device may determine, according to the cause value, that an IMD exists between frequency bands of at least two serving cells performing data transmission with the terminal device, and then determine to release the first RRC connection or perform handover or respond to the TDM mode.

Alternatively, the first access network device may also reject the request for the first message based on the assistance information.

With reference to the first aspect, in certain implementation manners of the first aspect, the first message includes auxiliary information, and the auxiliary information includes uplink frequency band information and/or downlink frequency band information of the second serving cell.

According to the scheme of the embodiment of the application, the first access network device can determine the target serving cell of the terminal device according to the uplink frequency band information and/or the downlink frequency band information of the second serving cell, so that no IMD exists between the frequency band of the target serving cell and the frequency band of the second serving cell, and the influence caused by IMD problems is reduced.

With reference to the first aspect, in certain implementations of the first aspect, the TDM pattern is used to indicate that a period of a first uplink transmission and a period of a first downlink transmission are different, where the first uplink transmission and the first downlink transmission correspond to the first serving cell.

In a possible implementation form, the TDM pattern is used to indicate that a first uplink transmission is transmitted in a first time period and to indicate that a first downlink transmission is transmitted in a second time period, where the first uplink transmission and the first downlink transmission correspond to the first serving cell.

According to the scheme of the embodiment of the application, uplink signals and downlink signals are not transmitted between the terminal equipment and the first serving cell at the same time, the influence caused by IMD problems is reduced, and the accuracy of data transmission is improved.

With reference to the first aspect, in certain implementation manners of the first aspect, a time period of the second uplink transmission is different from a time period of a first uplink transmission indicated by the TDM mode, where the first uplink transmission corresponds to the first serving cell, and the second uplink transmission corresponds to the second serving cell.

In a possible implementation form, the TDM pattern is used to indicate that a first uplink transmission is transmitted in a third time period and a second uplink transmission is transmitted in a fourth time period, where the first uplink transmission corresponds to the first serving cell and the second uplink transmission corresponds to the second serving cell.

According to the scheme of the embodiment of the application, the terminal equipment is ensured not to send the first uplink signal and the second uplink signal at the same time, the influence caused by IMD problem is reduced, and the accuracy of data transmission is improved.

With reference to the first aspect, in some implementations of the first aspect, the first serving cell is associated with a first identifier of a terminal device, and the second serving cell is associated with a second identifier of the terminal device.

With reference to the first aspect, in certain implementations of the first aspect, the first message is associated with a first identity of the terminal device.

In a second aspect, a wireless communication method is provided, including: judging whether the parameters related to the Power Headroom Report (PHR) meet preset conditions; triggering PHR to report to a first access network device, wherein the PHR related parameters comprise at least one of the following parameters: maximum transmit power of a terminal device, maximum power reduction, MPR, of the terminal device, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass。

According to the scheme of the embodiment of the application, when the PHR changes, the PHR report can be triggered according to whether the PHR related parameters meet the preset conditions or not, and the access network equipment is informed of the more accurate PHR value after the change, so that the access network equipment can accurately judge whether the resources allocated to the terminal equipment are appropriate or not, the accuracy of data transmission is ensured, and the transmission efficiency of uplink data is improved.

With reference to the second aspect, in certain implementations of the second aspect, the preset condition includes at least one of the following conditions: the variation value of the maximum transmission power is greater than or equal to a first threshold value; the change value of the MPR is greater than or equal to a second threshold; the change value of the A-MPR is greater than or equal to a third threshold; the sum of the change value of the MPR and the change value of the A-MPR is greater than or equal to a fourth thresholdA value; the change value of the P-MPR is greater than or equal to a fifth threshold; the described Δ P_PowerClassIs greater than or equal to a sixth threshold; the terminal equipment starts to apply the delta P_PowerClass(ii) a The terminal equipment stops applying the delta P_PowerClass. By applying at delta P_PowerClassIs greater than or equal to a sixth threshold value, or the terminal device starts and/or stops applying said Δ P_PowerClassReporting PHR in time, which can avoid the situation of delta P_PowerClassWhen the maximum transmitting power changes due to the change, the PHR is omitted to be reported, so that the network equipment can more accurately allocate communication resources, and the uplink transmission efficiency is improved.

Specifically, the preset condition is a predefined condition.

With reference to the second aspect, in certain implementations of the second aspect, the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, and/or a sixth threshold are received from the first access network device.

With reference to the second aspect, in some implementation manners of the second aspect, after the terminal device determines that the PHR related parameter meets the preset condition, the terminal device further needs to determine that a first duration is met, and then triggers the PHR reporting, where the first duration is predefined or preconfigured, and the first duration is used to limit a period for reporting the PHR, so as to avoid frequent reporting by the terminal device, and further save communication resources. In a possible design, the first duration is configured by PHR-ProhibitTimer, after the terminal device determines that the PHR-ProhibitTimer parameter meets the preset condition, the PHR is reported only after determining that the PHR-ProhibitTimer is overtime or is overtime, and by multiplexing the PHR-ProhibitTimer parameter, the network device can avoid frequent reporting of the PHR without consuming extra signaling. In another possible design, the period of reporting the PHR by the terminal equipment is indicated by another first time length indication information, and the period is applied differently from the existing PHR-ProhibitTimer parameter, so that more flexible PHR reporting period control is realized. With reference to the second aspect, in some implementations of the second aspect, before the determining that the power headroom report, PHR, related parameter satisfies the preset condition, the method further includes: establishing or recovering a first RRC connection with the first access network device; and/or establishing or recovering a second RRC connection with a second access network device.

According to the scheme of the embodiment of the application, when the terminal equipment establishes two RRC connections to cause PHR change or maintains the PHR change caused by the power control during the single RRC connection, whether the PHR parameter meets the preset condition or not can be judged, PHR reporting is triggered, and the more accurate PHR value after the change is notified to the access network equipment, so that the access network equipment can accurately judge whether the resource allocated to the terminal equipment is appropriate or not, the accuracy of data transmission is ensured, the transmission resource is reasonably allocated, and the transmission efficiency is improved.

With reference to the second aspect, in some implementations of the second aspect, the first access network device is associated with a first identity of the terminal device, and the second access network device is associated with a second identity of the terminal device.

In a third aspect, a wireless communication method is provided, including: receiving a first message from a terminal device, wherein the first message is used for requesting to release a first RRC connection, or requesting to switch, or indicating a Time Division Multiplexing (TDM) pattern, the first RRC connection is an RRC connection established with the terminal device, the TDM pattern is applied to a first serving cell of the terminal device, and the first message is a message sent when the terminal device determines that IMD exists between a frequency band of the first serving cell and a frequency band of a second serving cell; and sending a second message to the terminal equipment, wherein the second message is used for indicating to release the first RRC connection, or for indicating to switch, or for responding to the TDM pattern.

According to the scheme of the embodiment of the application, the access network equipment receives the first message, can determine to release the first RRC connection or switch the current serving cell or determine the TMD mode, reduces the influence caused by IMD problems, and improves the accuracy of data transmission. Specifically, the first access network device may release the first RRC connection, so as to avoid signal transmission between the terminal device and the first serving cell and between the terminal device and the second serving cell, and reduce the impact caused by IMD problems; or the first access network equipment determines to switch the current service cell, changes the frequency band of signal transmission between the terminal equipment and the first access network equipment, and reduces the influence caused by IMD problem; or the first access network equipment determines the TDM mode, the influence caused by IMD problems is reduced, and the accuracy of data transmission is improved.

With reference to the third aspect, in certain implementations of the third aspect, the first message includes a cause value indicating that the IMD is present at the terminal device.

According to the scheme of the embodiment of the application, the reason value can assist the first access network equipment to make a decision. The first access network device may determine that the IMD exists in the terminal device according to the cause value, and then determine to release the first RRC connection or perform handover or respond to the TDM pattern.

Alternatively, the first access network device may also reject the request for the first message based on the cause value.

With reference to the third aspect, in some implementations of the third aspect, the first message includes assistance information, and the assistance information includes uplink frequency band information and/or downlink frequency band information of the second serving cell.

According to the scheme of the embodiment of the application, the first access network device can determine the target serving cell of the terminal device according to the uplink frequency band information and/or the downlink frequency band information of the second serving cell, so that an IMD does not exist between the frequency band of the target serving cell and the frequency band of the second serving cell, and the influence caused by IMD problems is reduced.

With reference to the third aspect, in some implementations of the third aspect, the TDM pattern is used to indicate that a period of a first uplink transmission and a period of a first downlink transmission are different, where the first uplink transmission and the first downlink transmission correspond to the first serving cell.

With reference to the third aspect, in certain implementations of the third aspect, a time period of the second uplink transmission is different from a time period of a first uplink transmission indicated by the TDM pattern, where the first uplink transmission corresponds to the first serving cell, and the second uplink transmission corresponds to the second serving cell.

With reference to the third aspect, in some implementations of the third aspect, the first serving cell is associated with a first identity of a terminal device, and the second serving cell is associated with a second identity of the terminal device.

With reference to the third aspect, in some implementations of the third aspect, the first message is associated with a first identity of the terminal device.

In a fourth aspect, a wireless communication method is provided, including: sending a threshold information set to a terminal device, wherein the threshold information set comprises at least one of the following: a first threshold, a second threshold, a third threshold, a fourth threshold, a fifth threshold, and a sixth threshold, the set of threshold information corresponding to power headroom report, PHR, related parameters, wherein the PHR related parameters include at least one of: maximum transmit power of a terminal device, maximum power reduction, MPR, of the terminal device, additional maximum power reduction, A-MPR, of the terminal device, power management maximum of the terminal devicePower backoff P-MPR and maximum transmit power offset Δ P for the terminal device_PowerClassThe first threshold corresponds to the maximum transmission power, the second threshold corresponds to the MPR, the third threshold corresponds to the a-MPR, the fourth threshold corresponds to the MPR and the a-MPR, the fifth threshold corresponds to the P-MPR, and the sixth threshold corresponds to the ap_PowerClassCorresponding; and receiving the PHR from the terminal equipment.

According to the scheme of the embodiment of the application, when the PHR changes, the terminal device can judge whether to trigger the PHR reporting according to the relation between the PHR parameter and the threshold value, so that the access network device can obtain a more accurate PHR value after the change, and accurately judge whether the resource allocated to the terminal device is appropriate, thereby ensuring the accuracy of data transmission and improving the transmission efficiency of uplink data.

With reference to the fourth aspect, in some implementations of the fourth aspect, the terminal device satisfies a preset condition, where the preset condition includes at least one of the following conditions: the variation value of the maximum transmission power is greater than or equal to the first threshold; the change value of the MPR is greater than or equal to the second threshold; the change value of the A-MPR is greater than or equal to the third threshold; the sum of the change value of the MPR and the change value of the a-MPR is greater than or equal to the fourth threshold; the change value of the P-MPR is greater than or equal to the fifth threshold; the described Δ P_PowerClassIs greater than or equal to a sixth threshold; the terminal equipment starts to apply the delta P_PowerClass(ii) a The terminal equipment stops applying the delta P_PowerClass. By applying at delta P_PowerClassIs greater than or equal to a sixth threshold value, or the terminal device starts and/or stops applying said Δ P_PowerClassReporting PHR in time, which can avoid the situation of delta P_PowerClassWhen the maximum transmitting power changes due to the change, the PHR is omitted to be reported, so that the network equipment can more accurately allocate communication resources, and the uplink transmission efficiency is improved.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the method further includes sending first duration indication information to the terminal device, where the first duration indication information is used to indicate that the terminal device triggers PHR reporting to avoid frequent reporting by the terminal device after determining that the PHR-related parameter meets the preset condition and the first duration is met, so as to save communication resources. In a possible design, the first duration indication information configures the first duration by PHR-prohibit timer, and the network device may avoid frequent reporting of the PHR without consuming additional signaling. In another possible design, the period of reporting the PHR by the terminal equipment is indicated by another first time length indication information, and the period is applied differently from the existing PHR-ProhibitTimer parameter, so that more flexible PHR reporting period control is realized.

Specifically, the preset condition may be a predefined condition, and the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, and the sixth threshold may be predefined values, such as 3dB and 6 dB.

In a fifth aspect, a communications apparatus is provided. The communication device is configured to perform the method of the first aspect or the second aspect. In particular, the communication device may comprise means for performing the method of the first or second aspect, for example comprising processing means, transmitting means and receiving means. Illustratively, the communication device is a communication device, or a chip or other component provided in a communication device. Illustratively, the communication device is a terminal device. In the following, the communication apparatus is exemplified as a terminal device.

The processing module is configured to determine that an inter-modulation distortion IMD exists between a frequency band of a first serving cell and a frequency band of a second serving cell; the sending module is configured to send a first message to a first access network device, where the first message is used to request release of a first radio resource control RRC connection, or is used to request handover, or is used to indicate a time division multiplexing TDM mode, where the first RRC connection is an RRC connection established with the first access network device, the first access network device is an access network device to which the first serving cell belongs, and the TDM mode is applied to the first serving cell; the receiving module is configured to receive a second message from the first access network device, where the second message is used to indicate to release the first RRC connection, or is used to indicate handover, or is used to respond to the TDM mode.

Optionally, the sending module and the receiving module are the same module, for example, a transceiver module.

Optionally, the first message includes a cause value indicating the presence of an IMD.

Optionally, the first serving cell is associated with a first identifier of a terminal device, and the second serving cell is associated with a second identifier of the terminal device.

Or, the processing module is configured to determine that a parameter related to a power headroom report PHR meets a preset condition; the sending module is configured to trigger reporting of the PHR to the first access network device, where the PHR-related parameter includes at least one of: maximum transmit power of a terminal device, maximum power reduction, MPR, of the terminal device, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass。

It is to be understood that the method of the first aspect may particularly refer to the first aspect as well as the method of any of its various implementations, and that the method of the second aspect may particularly refer to the second aspect as well as the method of any of its various implementations.

In a sixth aspect, a communications apparatus is provided. The communication device is configured to perform the method of the third or fourth aspect. In particular, the communication device may comprise means, for example comprising transmitting means, receiving means, for performing the method of the third aspect or the fourth aspect. Illustratively, the communication device is a communication device, or a chip or other component provided in a communication device. Illustratively, the communication device is an access network device. In the following, the communication device is taken as an example of a first access network device.

The receiving module is configured to receive a first message from a terminal device, where the first message is used to request release of a first RRC connection, or is used to request handover, or is used to indicate a time division multiplexing TDM pattern, where the first RRC connection is an RRC connection established with the terminal device, the TDM pattern is applied to a first serving cell of the terminal device, and the first message is a message sent by the terminal device when it is determined that an IMD exists between a frequency band of the first serving cell and a frequency band of a second serving cell; the sending module is configured to send a second message to the terminal device, where the second message is used to indicate to release the first RRC connection, or to indicate handover, or to respond to the TDM mode.

Optionally, the first message comprises a cause value indicating that IMD is present at the terminal device.

Or, the sending module is configured to send a threshold information set to the terminal device, where the threshold information set includes at least one of: a first threshold, a second threshold, a third threshold, a fourth threshold, a fifth threshold, and a sixth threshold, the set of threshold information corresponding to a PHR-related parameter, wherein the PHR-related parameter includes at least one of: maximum transmit power of a terminal device, maximum power reduction, MPR, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClassThe first threshold corresponds to the maximum transmission power, the second threshold corresponds to the MPR, the third threshold corresponds to the a-MPR, the fourth threshold corresponds to the MPR and the a-MPR, the fifth threshold corresponds to the P-MPR, and the sixth threshold corresponds to the ap_PowerClassCorresponding; the receiving unit is used for receiving the PHR from the terminal equipment.

It should be understood that the method of the third aspect may specifically refer to the method of the third aspect in any one of various implementations of the third aspect, and the method of the fourth aspect may specifically refer to the method of the fourth aspect in any one of various implementations of the fourth aspect.

In a seventh aspect, a communications apparatus is provided. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is a terminal device. The communication device includes: a communication interface for transmitting and receiving information, or communicating with other devices; and a processor coupled with the communication interface. Optionally, the communication device may further comprise a memory for storing computer executable program code. Alternatively, the communication device may not include a memory, which may be external to the communication device. Wherein the program code stored by the memory comprises instructions that, when executed by the processor, cause the communication device to perform the method of the first or second aspect.

Wherein, if the communication device is a communication device, the communication interface may be a transceiver in the communication device, for example, implemented by an antenna, a feeder, a codec, etc. in the communication device. Alternatively, if the communication means is a chip provided in the communication device, the communication interface may be an input/output interface of the chip, such as an input/output pin or the like.

In an eighth aspect, a communication device is provided. Illustratively, the communication means is a chip provided in the communication device. Illustratively, the communication device is an access network device. The communication device includes: the communication interface is used for transmitting and receiving information or communicating with other devices; and a processor coupled with the communication interface. Optionally, the communication device may further comprise a memory for storing computer executable program code. Alternatively, the communication device may not include a memory, which may be external to the communication device. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the communication apparatus to perform the method of the third or fourth aspect.

It should be understood that the method of the third aspect may specifically refer to the third aspect as well as the method in any one of the various implementations of the third aspect, and the method of the fourth aspect may specifically refer to the fourth aspect as well as the method in any one of the various implementations of the fourth aspect.

In a ninth aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method in the above aspects performed by the terminal device.

In a tenth aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method in the above aspects as performed by the access network device.

In an eleventh aspect, a chip system is provided, which comprises a processor for implementing the functions of the terminal device in the method of the above aspects, e.g. for receiving or processing data and/or information involved in the above method. In one possible design, the system-on-chip further includes a memory to hold program instructions and/or data. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In a twelfth aspect, a chip system is provided, which comprises a processor for implementing the functions of the access network device in the method of the above aspects, for example, receiving or processing data and/or information involved in the above method. In one possible design, the system-on-chip further includes a memory to hold program instructions and/or data. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In a thirteenth aspect, there is provided a computer-readable storage medium storing a computer program which, when executed, implements the method performed by the terminal device in the above-described aspects.

In a fourteenth aspect, a computer-readable storage medium is provided, which stores a computer program that, when executed, implements the method performed by the access network device in the above aspects.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application.

Fig. 2 is a schematic flow chart of a communication method according to an embodiment of the present application.

Fig. 3 is a schematic flow chart of a communication method according to another embodiment of the present application.

Fig. 4 is a schematic flow chart of a communication method according to another embodiment of the present application.

Fig. 5 is a schematic flow chart of a communication method according to another embodiment of the present application.

Fig. 6 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device according to another embodiment of the present application.

FIG. 8 is a schematic block diagram of a communication device according to another embodiment of the present application

Fig. 9 is a schematic block diagram of a communication apparatus according to another embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device according to another embodiment of the present application.

Fig. 11 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (GSM) systems, Code Division Multiple Access (CDMA) systems, Wideband Code Division Multiple Access (WCDMA) systems, General Packet Radio Service (GPRS), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE Time Division Duplex (TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, future fifth generation (5G) or new wireless telecommunication systems (NR 24-28), wherein the systems may include inter-network NR 2 (r), inter-network NR 862 (r), or any other enhanced radio system (NR 24-28), V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), etc., long term evolution (long term evolution-vehicle, LTE-V) for vehicle-to-vehicle, Machine Type Communication (MTC), internet of things (IoT), long term evolution (long term evolution-machine) for machine-to-machine communication, M2M, etc.

The terminal device in the embodiments of the present application may include a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment.

The terminal device may be a device providing voice/data connectivity to a user, e.g. a handheld device, a vehicle mounted device, etc. with wireless connection capability. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer (pad), a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol) Protocol (PDA) phone, a wireless local loop (wireless local) phone, a wireless local loop (SIP) personal digital assistant (wlan) station, a personal digital assistant (personal digital assistant) device with wireless communication function, and a wireless communication function, The computing device or other processing device connected to the wireless modem, the vehicle mounted device, the wearable device, the terminal device in a future 5G network or the terminal device in a future evolved Public Land Mobile Network (PLMN), and/or any other suitable device for communicating over a wireless communication system, which is not limited by the embodiments of the present application.

The wearable device can also be called a wearable intelligent device, and is a general name of devices which are intelligently designed and can be worn by applying a wearable technology to daily wearing, such as glasses, gloves, watches, clothes, shoes and the like. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

In addition, in the embodiment of the present application, the terminal device may also be a terminal device in an internet of things (IoT) system, where IoT is an important component of future information technology development, and a main technical feature of the present application is to connect an article with a network through a communication technology, so as to implement an intelligent network with interconnected human-computer and interconnected objects.

In addition, in this application, the terminal device may further include sensors such as an intelligent printer, a train detector, and a gas station, and the main functions include collecting data (part of the terminal device), receiving control information and a downlink signal of the access network device, and sending an electromagnetic wave to transmit an uplink signal to the access network device.

The access network device in this embodiment may be any device with a wireless transceiving function for communicating with a terminal device, and the access network device may be a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, a base station B (nodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved base station B (eNB, or eNodeB) in an LTE system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, a wireless network controller (RNC), a base station controller (base station controller, network controller), a home base station BSC (e.g., home base station BSC), a base station B (nodeB, or eNodeB), BBU), or the access network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, an access network device in a future 5G network or an access network device in a future evolved PLMN network, and the like, and may be an Access Point (AP), a wireless relay node, a wireless backhaul node, a Transmission Point (TP) or a Transmission and Reception Point (TRP) in a WLAN, and the like, may be a gNB or a transmission point (TRP or TP) in a new radio, NR) system, or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system, or may also be a network node forming a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), and the like, and the embodiments of the present application are not limited.

In some deployments, the gNB may include a Centralized Unit (CU) and a DU. The gNB may further include an Active Antenna Unit (AAU). The CU implements part of the function of the gNB, and the DU implements part of the function of the gNB, for example, the CU is responsible for processing non-real-time protocols and services, and implementing functions of a Radio Resource Control (RRC) layer and a packet data convergence layer (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing, and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or by the DU + AAU under this architecture. It is to be understood that the access network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into access network devices in an access network (RAN), or may be divided into access network devices in a Core Network (CN), which is not limited in this application.

In addition, in this embodiment of the present application, the access network device provides a service for a cell, and the terminal device communicates with the cell through a transmission resource (for example, a frequency domain resource, or a spectrum resource) allocated by the access network device, where the cell may belong to a macro base station (for example, a macro eNB or a macro gNB), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cell (metro cell), micro cell (microcell), pico cell (pico cell), femto cell (femto cell), etc., and these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission service.

In the embodiment of the present application, the terminal device or the access network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided in the embodiment of the present application, as long as the program recorded with the code of the method provided in the embodiment of the present application can be executed to perform communication according to the method provided in the embodiment of the present application, for example, the execution main body of the method provided in the embodiment of the present application may be a terminal device or an access network device, or a functional module capable of calling the program and executing the program in the terminal device or the access network device.

Additionally, various aspects or features of embodiments of the application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in the embodiments of this application is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, magnetic strips, etc.), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

In this case, the application program executing the communication method according to the embodiment of the present application and the application program controlling the receiving end device to complete the action corresponding to the received data may be different application programs.

At a given time, the access network device, the terminal device may be a wireless communication transmitting apparatus and/or a wireless communication receiving apparatus. When sending data, the wireless communication sending device may encode the data for transmission. In particular, a wireless communication transmitting device may acquire (e.g., generate, receive from other communication devices, or save in memory, etc.) a number of data bits to be transmitted over a channel to a wireless communication receiving device. Such data bits may be contained in a transport block (or transport blocks) of data, which may be segmented to produce multiple code blocks.

Fig. 1 shows a schematic diagram of a network architecture provided in an embodiment of the present application. The communication system of the embodiment of the application may include an access network device and a plurality of terminal devices, and inter-device communication may be performed between the plurality of terminal devices. As shown in fig. 1, a communication system according to an embodiment of the present application may include a Base Station (BS) and user equipments UE 1-UE 6, where the base station may transmit information to one or more of UEs 1-UE 6. The communication system of the embodiment of the present application may also include user equipments UE4 to UE6, and in the communication system, the UE5 may send information to one or more of the UE4 and the UE 6. The above network architecture is merely illustrative and not limiting of the present application.

The RRC state of the UE includes the following.

RRC connected (connected) state: the UE establishes RRC connection with the network and can perform data transmission.

RRC idle (idle) state: the UE does not establish an RRC connection with the network and the base station does not have the context of the UE.

RRC deactivated (inactive) state: the UE has previously entered the RRC connected state and then the base station has released the RRC connection, but the base station and the UE have saved the context. If the UE needs to enter the RRC connected state from the RRC deactivated state, an RRC connection recovery procedure needs to be initiated. Compared with the RRC establishment process, the RRC recovery process has shorter time delay and smaller signaling overhead, but the base station side needs to store the context of the UE, which occupies more storage overhead.

A terminal device capable of supporting two SIM cards is described below. Wherein, a base station of one SIM may be understood as the base station serving the communication entity corresponding to the SIM. According to different transceiving capabilities of the terminal equipment, the terminal equipment supporting the dual-SIM card can be divided into the following three modes.

A single-receiving single-transmitting (single Rx/Tx) terminal device can insert two SIM cards, but only one SIM card can be used at a time, that is, only one SIM card can receive (Rx) and transmit (Tx), and the other SIM card cannot be used (unused).

For a dual Rx/single Tx (dual Rx/single Tx) terminal, the terminal can receive data from two SIM cards at the same time, but only transmit data from one SIM card.

For a dual reception dual transmission (dual Rx/Tx) terminal: the two SIM cards correspond to respective transceivers. The terminal equipment can simultaneously receive and send data of the two SIM cards.

IMD refers to two signals of different frequencies, for example, a signal with frequency f1 and a signal with frequency f2, which are modulated with each other by a non-linear amplifier to generate a modulated signal with frequency m × f1 ± n × f 2. The modulated signal is an unwanted signal, and if the frequency of the modulated signal falls within the frequency band of the received signal, reception of the signal is disturbed, resulting in a decrease in reception sensitivity. For a terminal device capable of performing signal transmission with two serving cells simultaneously, for example, a terminal device supporting a dual-card mode, if IMD problems exist in frequency bands used by two SIM cards, when the terminal device simultaneously transmits data of the two SIM cards, two uplink signals may generate modulation signals, and the frequency of the modulation signals falls within the frequency band used by the terminal device for receiving the data of one of the SIM cards, which may cause interference to the terminal for receiving the data of the SIM card, thereby causing inaccuracy of data transmission.

A Power Headroom Report (PHR) is a difference between a maximum transmit power of the UE and an estimated power required for uplink transmission provided by the UE to the access network device. The access network device may determine whether the resource allocated to the UE is appropriate according to the difference.

The PHR includes three types:

1) type (Type) 1: a difference between a maximum transmission power of the UE and an estimated power required for transmission of a Physical Uplink Shared Channel (PUSCH);

2) type 2: a difference between the maximum transmit power of the UE and an estimated power required for transmission of a PUSCH and a Physical Uplink Control Channel (PUCCH);

3) type 3: a difference between a maximum transmit power of the UE and a predicted power required for transmission of a Sounding Reference Signal (SRS).

The time triggering mode of the PHR mainly includes:

(1) a PHR prohibit timer (PHR-prohibit timer) times out or has timed out, and the change value of the path loss exceeds a certain threshold value;

(2) PHR periodic timer (PHR-PeriodicTimer) times out;

(3) the upper layer configures or reconfigures the PHR parameter (e.g., the RRC layer reconfigures the value of the timer);

(4) a secondary cell with uplink configuration is activated;

(5) adding an auxiliary base station;

(6) phr-probibittimer times out or has timed out, and the MAC layer obtains a new uplink transmission resource. Taking the PHR of type 1 as an example, the PHR is determined by the maximum transmit power of the UE on the current subcarrier and the power estimated by the UE to be required for uplink shared channel transmission. The value of the maximum transmit power is affected by Maximum Power Reduction (MPR), additional maximum power reduction (a-MPR), and power management maximum power reduction (P-MPR). MPR and a-MPR are relaxation of the maximum transmit power to ensure that the radio frequency power has no effect on the electromagnetic environment. The P-MPR may be used to meet electromagnetic energy requirements, power management requirements, or to address undesirable sensitivity degradation when transmitting signals to multiple access network devices simultaneously. It should be noted that the above-mentioned relationship between the maximum transmission power and the MPR, the a-MPR, and the P-MPR is used to describe the relationship between the maximum transmission power and the power backoff, the additional power backoff, and the power backoff due to power management, and the communication protocol may constrain the MPR and the a-MPR for different modulation schemes and different resource locations, where MPR is the maximum value of the power backoff, and a-MPR is the maximum value of the additional power backoff, and the terminal device should not exceed MPR and a-MRP when applying the power backoff and the additional power backoff. Power back off due to power management, the maximum of which is P-MPR, can be used to meet electromagnetic energy requirements and to handle the undesirable sensitivity degradation that occurs when signals are transmitted to multiple access network devices simultaneously. That is, in the actual application process of the terminal device, the maximum transmission power configured by the terminal device on the cell c of the carrier f is determined according to the actual power backoff, the additional power backoff, and the power backoff due to power management. In the present application, the maximum transmission power is determined according to the MPR, the a-MPR and the P-MPR, and in a specific implementation, it may be understood that the maximum transmission power actual value is determined according to the power backoff actual value, the additional power backoff actual value and the power backoff actual value due to power management, and for simplicity of explanation, the maximum value is described below.

For a terminal device capable of simultaneous signaling with two serving cells, e.g., a terminal device supporting dual card mode, when the terminal device establishes RRC connections with both access network devices,due to a reduction in power of communications between the terminal device and one of the access network devices, the terminal device may apply power backoff, additional power backoff, and power backoff due to power management, as well as maximum transmit power offset (Δ P)_PowerClass) That is, MPR, A-MPR or P-MPR, Δ P_PowerClassAnd if the PHR reporting trigger condition is not met, the PHR reporting is not triggered, so that the PHR obtained by the access network device before is not accurate, and the access network device cannot schedule a proper uplink transmission resource for the terminal device, thereby reducing the effectiveness of uplink transmission.

When the terminal device has only one RRC connection, there may be a problem that, for example, the terminal device enters a dual-connection working mode or the terminal device simultaneously starts other signal transmissions (e.g., bluetooth, wireless fidelity, etc.), the maximum transmission power of the terminal device may also change, and then the PHR value changes, and at this time, if the PHR reporting trigger condition is not satisfied, the PHR reporting is not triggered, which results in a reduction in the effectiveness of uplink transmission.

Wherein Δ P is as defined above_PowerClassFor example, for a terminal device with power class 2(power class 2), the maximum transmit power of the terminal device may reach 26 decibel milliwatts (dBm), which is higher than the transmit power of 23dBm in a general case, in order to reduce radiation influence on human body and space, the power class 2 terminal device is generally limited to operate at 26dBm with a certain time ratio, and when an uplink resource scheduled by a base station to the terminal device exceeds the time ratio, the terminal device applies Δ P_PowerClassThe method reduces own transmitting power to further influence the maximum transmitting power of the terminal equipment on the current service cell, under the condition, the PHR value of the terminal equipment changes, and at the moment, if the PHR reporting triggering condition is not met, the PHR reporting cannot be triggered, so that the access network equipment is in the PHR reporting triggering conditionThe obtained PHR is inaccurate, which results in that the access network device cannot schedule a proper uplink transmission resource for the terminal device, thereby reducing the effectiveness of uplink transmission. In addition, the Δ P_PowerClassThe application of (2) is not limited to power class 2 terminal equipment, and is also applicable to the offset of the maximum transmission power in other scenes. The following describes a wireless communication method in the embodiment of the present application, respectively for IMD problems and PHR problems existing in a terminal device.

Fig. 2 shows a schematic diagram of a communication method 200 according to an embodiment of the present application. The method 200 includes steps S210-S230.

S210, the terminal device determines that intermodulation distortion (IMD) exists between the frequency band of the first serving cell and the frequency band of the second serving cell.

The existence of IMD between the frequency band of the first serving cell and the frequency band of the second serving cell means that the frequency of the modulation signal generated when the first uplink signal and the second uplink signal of the terminal device are transmitted simultaneously falls within the frequency band of the first downlink signal or falls within the frequency band of the second downlink signal, which interferes with the reception of the first downlink signal or interferes with the reception of the second downlink signal. The first uplink signal and the first downlink signal correspond to a first serving cell, and the second uplink signal and the second downlink signal correspond to a second serving cell. That is, the first uplink signal and the first downlink signal are signals transmitted between the terminal device and the first serving cell, and the second uplink signal and the second downlink signal are signals transmitted between the terminal device and the second serving cell.

Specifically, the terminal device determines that there is intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell, and may determine, for the terminal device, that the frequency of the modulation signal generated when the first uplink signal and the second uplink signal are transmitted simultaneously falls within the frequency band of the first downlink signal or falls within the frequency band of the second downlink signal.

By way of example and not limitation, the first serving cell may be associated with a first identity of a terminal device and the second serving cell may be associated with a second identity of the terminal device.

It should be noted that, in this embodiment of the application, the first identifier and the second identifier may refer to identifiers allocated by a core network for a Subscriber Identity Module (SIM) card 1 and a SIM card 2 of a terminal device, for example, a Temporary Mobile Station Identifier (TMSI) or a 5G network temporary mobile station identifier (5G temporary mobile station identifier, 5G-TMSI), or an International Mobile Subscriber Identity (IMSI). The first identifier and the second identifier may also refer to identifiers allocated by the access network to the SIM card 1 and the SIM card 2 of the terminal device, for example, a cell radio network temporary identifier (C-RNTI). For a terminal device comprising two identities, it can be seen as two communication entities for the network side.

The SIM card may be understood as a key for the terminal device to access the mobile network, and for convenience of description, the SIM card and its evolution are collectively referred to as the SIM card in the embodiments of the present application. For example, the SIM card may be an identification card of a global system for mobile communications (GSM) digital mobile phone user, which is used for storing an identification code and a secret key of the user and supporting authentication of the GSM system to the user; for another example, the SIM card may also be a Universal Subscriber Identity Module (USIM), which may also be referred to as an upgraded SIM card; for another example, the SIM card may also be a Universal Integrated Circuit Card (UICC), an embedded SIM card (eSIM), a soft SIM card, or other forms capable of identifying the identity of the user. The embodiment of the present application is illustrated by a SIM card, and does not limit the present application.

For example, the first identifier corresponds to the SIM card 1, the second identifier corresponds to the SIM card 2, the first uplink signal and the first downlink signal may be understood as signals transmitted between the terminal device and the first serving cell through the SIM card 1, and the second uplink signal may be understood as signals transmitted between the terminal device and the second serving cell through the SIM card 2.

In the embodiment of the present application, only the terminal device supporting dual SIM cards is taken as an example for description, and the communication method in the embodiment of the present application is also applicable to terminal devices supporting more than two SIM cards.

It should be noted that the communication method according to the embodiment of the present application is also applicable to a terminal device that supports only one SIM card. That is to say, the communication method of the embodiment of the present application is applicable to a terminal device capable of simultaneously performing signal transmission with at least two serving cells. For example, a terminal device capable of Dual Connection (DC) with a first access network device and a second access network device.

In this embodiment, the first access network device refers to an access network device to which a first serving cell of the terminal device belongs, where the terminal device establishes a first RRC connection with the first access network device, and remains in the serving cell of the first access network device when the terminal device is in an RRC idle state or an RRC deactivated state.

The second access network device refers to an access network device to which a second serving cell of the terminal device belongs, wherein the terminal device establishes a second RRC connection with the second access network device, and remains in the serving cell of the second access network device when the terminal device is in an RRC idle state or an RRC deactivated state.

Exemplarily, after the terminal device determines that there is an IMD between the frequency band of the first serving cell and the frequency band of the second serving cell, step S220 may be performed.

Alternatively, when the terminal device has already established the first RRC connection with the first access network device, needs to establish or restore the second RRC connection with the second access network, and the terminal device determines that the IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, the terminal device may perform step S220.

In the embodiment of the present application, "first RRC connection" refers to RRC connection established by the terminal device and the first access network device, and "second RRC connection" refers to RRC connection established by the terminal device and the second access network device.

It should be noted that the first access network device and the second access network device may be the same access network device, or may be different access network devices.

Further, when the terminal device is sending the first uplink signal and needs to establish or recover the second RRC connection with the second access network, and the terminal device determines that the IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, the terminal device may perform step S220. That is, in this case, if the terminal device has already established the first RRC connection with the first access network device, but the current terminal device does not transmit the first uplink signal, the terminal device may not perform step S220.

Alternatively, when the terminal device has established the first RRC connection with the first access network device, and needs to send the second uplink signal, and the terminal device determines that the IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, the terminal device may perform step S220. In this case, when the terminal device has established a first RRC connection with the first access network device, at the same time, the terminal device has established a second RRC connection with the second access network device.

Further, when the terminal device is transmitting the first uplink signal and needs to transmit the second uplink signal, and the terminal device determines that the IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, the terminal device may perform step S220. That is, in this case, if the terminal device has already established the first RRC connection with the first access network device, but the current terminal device does not transmit the first uplink signal, the terminal device may not perform step S220.

S220, a terminal device sends a first message to a first access network device, where the first message is used to request release (release) of a first RRC connection, or used to request handover, or used to indicate a time division multiplexing TDM mode, and the TDM mode is applied to the first serving cell. The first message is for requesting release of the first RRC connection and may also include for requesting suspension of the first RRC connection. In the embodiment of the present application, "handover" refers to handover of a serving cell, where a first serving cell is handed over to a target serving cell.

By way of example and not limitation, the first message may be associated with a first identification of the terminal device. For example, the first identifier corresponds to a SIM card 1, and the terminal device may send a first message to the first access network device through the SIM card 1.

S230, the first access network device sends a second message to the terminal device, where the second message is used to instruct the terminal device to release the first RRC connection, or to instruct handover, or to respond to the TDM mode.

The terminal device may release the first RRC connection or suspend the first RRC connection or perform handover according to the second message.

Alternatively, the second message may also be a reject message. The first access network device may reject the request to release the first RRC connection or handover or reject the TDM pattern.

According to the scheme of the embodiment of the application, the terminal device can send the first message to the access network device after determining that the IMD exists, so that the first access network device releases the first RRC connection or switches the current serving cell or determines the TMD mode, and the influence caused by the IMD problem is reduced.

The following takes the first serving cell associated with the first identifier of the terminal device and the second serving cell associated with the second identifier of the terminal device as an example, and the method 200 is divided into two cases (case 1 and case 2) to be specifically described. Case 1 and case 2 correspond to method 300 and method 400, respectively, described below.

Case 1

Fig. 3 shows a schematic diagram of a wireless communication method 300 of another embodiment of the present application. The method 300 includes steps S310-S330.

S310, the terminal device determines that an intermodulation distortion IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell.

The first serving cell is associated with a first identifier of the terminal device, and the second serving cell is associated with a second identifier of the terminal device. For example, the first identity corresponds to SIM card 1 and the second identity corresponds to SIM card 2. The first serving cell may be understood as a serving cell corresponding to the SIM card 1, and the second serving cell may be understood as a serving cell corresponding to the SIM card 2.

S320, the terminal device sends a first message to the first access network device, where the first message is used to request release (release) of the first RRC connection or request handover.

The first message may be associated with a first identity of the terminal device. For example, the first identifier corresponds to a SIM card 1, and the terminal device may send a first message to the first access network device through the SIM card 1. The first RRC connection may be an RRC connection established by the terminal device with the first access network device through the SIM card 1.

The first access network device may determine to release the first RRC connection or handover according to a current traffic transmission state, etc. Alternatively, the first access network device may also reject the request for the first message, i.e. the first access network device may reject the release of the first RRC connection or reject the handover.

Further, the first message includes a cause value indicating the presence of the IMD.

Specifically, whether the terminal device has an IMD or not may be indicated by a field of the cause value. That is, after determining that the intermodulation distortion IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, the terminal device may send a cause value to the first access network device, and only notify the first access network device that the IMD exists in the terminal device, without sending information such as an Identifier (ID) of the second serving cell to the first access network device.

This may assist the first access network device in making the decision. The first access network device may determine that the IMD exists in the terminal device according to the cause value, and then determine to release the first RRC connection or handover. Alternatively, the first access network device may also reject the request for the first message based on the cause value.

Further, the first message includes auxiliary information, and the auxiliary information may include uplink frequency band information and/or downlink frequency band information of the second serving cell.

It should be understood that the auxiliary information may include uplink frequency band information and/or downlink frequency band information of the second serving cell, and only the uplink frequency band information and/or the downlink frequency band information may be transmitted without transmitting information such as an ID of the second serving cell.

The first access network device may determine the target serving cell of the terminal device according to the uplink frequency band information and/or the downlink frequency band information of the second serving cell, so that an IMD does not exist between the frequency band of the target serving cell and the frequency band of the second serving cell, and the influence caused by the IMD problem is reduced.

S330, the first access network device sends a second message to the terminal device, where the second message may be used to indicate to release the first RRC connection or to indicate handover.

Further, the second message may include indication information, which may be used to indicate target serving cell information of the terminal device.

By way of example and not limitation, the second message may be used to instruct the terminal device to release the first RRC connection. In this case, the second message may be an RRC Connection Release (RRC Connection Release) message. The indication information may be redirection indication information, where the redirection indication information is used to indicate target serving cell information of the terminal device. The terminal device may release the first RRC connection according to the second message, perform cell search, and attempt to camp on the designated target serving cell.

By way of example and not limitation, the second message may be used to instruct the terminal device to handover. In this case, the second message may be a handover message. The indication information may indicate target serving cell information for handover. The terminal device may switch to the target serving cell according to the second message.

According to the scheme of the embodiment of the application, the terminal device can send the first message to the access network device after determining that the IMD exists, so that the first access network device releases the first RRC connection, and signal transmission with the first serving cell and the second serving cell is avoided, or the terminal device sends the first message to the access network device, so that the first access network device switches the current serving cell, the frequency band for signal transmission between the terminal device and the first access network device is changed, and the influence caused by the IMD problem is reduced.

Case 2

Fig. 4 shows a schematic diagram of a wireless communication method 400 of another embodiment of the present application. The method 400 includes steps S410-S430.

And S410, determining that intermodulation distortion (IMD) exists between the frequency band of the first serving cell and the frequency band of the second serving cell.

The first serving cell is associated with a first identity of the terminal device and the second serving cell is associated with a second identity of the terminal device. For example, the first identity corresponds to SIM card 1 and the second identity corresponds to SIM card 2. The first serving cell may be understood as a serving cell corresponding to the SIM card 1, and the second serving cell may be understood as a serving cell corresponding to the SIM card 2.

Specifically, determining that intermodulation distortion (IMD) exists between the frequency band of the first serving cell and the frequency band of the second serving cell can be divided into the following two scenarios.

Scene 1:

the terminal device operates in a Frequency Division Duplex (FDD) mode in both the first serving cell and the second serving cell.

The terminal device determines that an IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, and may determine, for the terminal device, that the frequency of the modulation signal generated when the first uplink signal and the second uplink signal are transmitted simultaneously falls within the frequency band of the first downlink signal or falls within the frequency band of the second downlink signal. The first uplink signal and the first downlink signal correspond to a first serving cell, and the second uplink signal and the second downlink signal correspond to a second serving cell.

Scene 2:

the terminal device operates in an FDD mode in the first serving cell and operates in a Time Division Duplex (TDD) mode in the second serving cell.

The terminal device determines that an IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, and may determine, for the terminal device, that the frequency of the modulation signal generated when the first uplink signal and the second uplink signal are transmitted simultaneously falls within the frequency band of the first downlink signal. The first uplink signal and the first downlink signal correspond to a first serving cell, and the second uplink signal corresponds to a second serving cell.

Alternatively, the terminal device operates in TDD mode in the first serving cell and in FDD mode in the second serving cell.

The terminal device determines that an IMD exists between the frequency band of the first serving cell and the frequency band of the second serving cell, and may determine, for the terminal device, that the frequency of the modulation signal generated when the first uplink signal and the second uplink signal are transmitted simultaneously falls within the frequency band of the second downlink signal. The first uplink signal corresponds to a first serving cell, and the second uplink signal and the second downlink signal correspond to a second serving cell.

S420, sending a first message to a first access network device, where the first message is used to indicate a time-division multiplexing (TDM) pattern (pattern), and the TDM pattern is applied to the first serving cell.

The first message may be associated with a first identity of the terminal device. For example, the first identifier corresponds to a SIM card 1, and the terminal device may send a first message to the first access network device through the SIM card 1.

Specifically, the TDM pattern is explained for the above-described scenario 1 and scenario 2, respectively.

Scene 1:

illustratively, the terminal device determines that the frequency of the modulation signal generated when the first uplink signal and the second uplink signal are transmitted simultaneously falls within the frequency band of the first downlink signal. The terminal device may determine the TDM mode for uplink transmission and downlink transmission with the first serving cell according to the uplink service mode and the downlink service mode of the first serving cell. For example, the terminal device mainly uses uplink service, and may determine that the time of uplink transmission exceeds the time of downlink transmission. Specifically, the TDM mode may be a proportion of uplink transmission and downlink transmission in time. For example, the TDM pattern may indicate how many subframes are used for downlink transmission and how many subframes are used for uplink transmission within one frame; or, the TDM mode may also indicate how many symbols are used for downlink transmission and how many symbols are used for uplink transmission in one subframe; further alternatively, the TDM mode may include both of the above expressions. The representation of the specific TDM mode is not limited in this application.

The TDM pattern is configured to indicate that a period of a first uplink transmission and a period of a first downlink transmission are different, wherein the first uplink transmission and the first downlink transmission correspond to the first serving cell.

Alternatively, the TDM pattern may be used to indicate that a first uplink transmission is transmitted in a first time period and to indicate that a first downlink transmission is transmitted in a second time period, where the first uplink transmission and the first downlink transmission correspond to the first serving cell.

Therefore, the uplink signal and the downlink signal are not transmitted simultaneously between the terminal device and the first serving cell, and the influence caused by IMD (in-device identification) problems is reduced.

Illustratively, the terminal device determines that the frequency of the modulation signal generated when the first uplink signal and the second uplink signal are transmitted simultaneously falls within the frequency band of the second downlink signal. The terminal device may determine the TDM mode for performing uplink transmission and downlink transmission with the second serving cell according to the uplink traffic mode and the downlink traffic mode of the second serving cell.

The TDM pattern is configured to indicate that a period of a second uplink transmission and a period of a second downlink transmission are different, where the first uplink transmission and the first downlink transmission correspond to the second serving cell.

Alternatively, the TDM pattern may be used to indicate a second uplink transmission to be transmitted in a first period and to indicate a first downlink transmission to be transmitted in a second period, where the second uplink transmission and the second downlink transmission correspond to the second serving cell.

That is to say, in this case, S420 may also be understood as that the terminal device sends a first message to the second access network device, where the first message is used to instruct the terminal device to perform the TDM mode of uplink transmission and downlink transmission with the second serving cell, so that it can be ensured that uplink signal transmission and downlink signal transmission are not performed between the terminal device and the second serving cell at the same time, and the influence caused by the IMD problem is reduced.

Scene 2:

illustratively, the terminal device operates in FDD mode in the first serving cell and TDD mode in the second serving cell.

By way of example and not limitation, the terminal device may determine the TDM patterns for uplink transmission and downlink transmission with the first serving cell according to the uplink traffic pattern and the downlink traffic pattern of the first serving cell.

Specifically, the TDM pattern may be used to indicate that a period of a first uplink transmission and a period of a first downlink transmission are different, where the first uplink transmission and the first downlink transmission correspond to the first serving cell.

By way of example and not limitation, the terminal device may determine the TDM mode for uplink transmission and downlink transmission with the first serving cell according to a ratio of uplink transmission and downlink transmission of the second serving cell, and ensure that the uplink transmission of the first serving cell does not collide with the uplink transmission of the second serving cell in a time domain.

Specifically, the period of the second uplink transmission is different from the period of the first uplink transmission indicated by the TDM mode, or the period of the second uplink transmission is different from the period of the first downlink transmission indicated by the TDM mode. Wherein the first uplink transmission and the first downlink transmission correspond to the first serving cell and the second uplink transmission corresponds to the second serving cell.

Alternatively, the TDM pattern may be used to indicate that a first uplink transmission or a first downlink transmission is transmitted in a third time period and a second uplink transmission is transmitted in a fourth time period, where the first uplink transmission and the first downlink transmission correspond to the first serving cell and the second uplink transmission corresponds to the second serving cell.

Therefore, the terminal equipment can be ensured not to send the first uplink signal and the second uplink signal or send the second uplink signal and receive the first downlink signal at the same time, and the influence caused by IMD problem is reduced.

S430, the first access network device sends a second message to the terminal device, where the second message is used for responding to the TDM mode.

Responding to the TDM pattern may be to approve the TDM pattern or to reject the TDM pattern.

According to the scheme of the embodiment of the application, the terminal equipment can send the first message to the access network equipment after determining that the IMD exists so as to inform the first access network equipment of the TDM mode, reduce the influence caused by the IMD problem and further improve the accuracy of data transmission.

Fig. 5 shows a schematic diagram of a communication method 500 of an embodiment of the present application. The method 500 includes steps S510-S530.

S510, the first access network device sends a threshold information set of the PHR related parameters to the terminal device.

In particular, the set of threshold information may be broadcast by the first access network device. Alternatively, the threshold information set may be configured for the terminal device by the first access network device, or the threshold information set may be predefined.

The set of threshold information is at least one of: a first threshold, a second threshold, a third threshold, a fourth threshold, a fifth threshold, and a sixth threshold.

The PHR-related parameters may include at least one of: maximum transmit power of a terminal device, maximum power reduction, MPR, of the terminal device, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass。

As mentioned above, the PHR is the difference between the maximum transmit power of the terminal device and the estimated power required for uplink transmission. According to the protocol, the maximum transmission power P of the terminal device on the carrier f_CMAX,f,cBy being provided withThe following equation is determined.

P _{CMAX_L,f,c}≤P _CMAX,f,c≤P _{CMAX_H,f,c}

P _{CMAX_L,f,c}＝min{P _EMAX,c-ΔT _C,c,(P _PowerClass-ΔP _PowerClass)-max(MPR _c+A-MPR _c+ΔT _IB,c+ΔT _C,c+ΔT _RxSRS,P-MPR _c)}

P _{CMAX_H,f,c}＝min{P _EMAX,c,P _PowerClass–ΔP _PowerClass}

Wherein the maximum transmitting power P_CMAX,f,cWhich represents the maximum transmit power that the terminal device configures according to certain constraints on carrier f of serving cell c. It should be understood that the maximum transmission power is applicable to PUSCH transmission, PUCCH and PUSCH transmission, and SRS transmission, that is, the PHR in the embodiment of the present application includes the aforementioned three types of PHR. P_{CMAX_L,f,c}Represents P_CMAX,f,cMinimum value of preference, P_{CMAX_H,f,c}Represents P_CMAX,f,cMaximum value of_EMAX,cThe representation being the maximum transmit power, P, indicated by the network_PowerClassRepresenting the maximum transmit power supported by the terminal device. MPR (multi-reduction printed Circuit Board)_cRepresenting a maximum power back-off value, A-MPR, for serving cell c_cRepresents an additional maximum power back-off value for serving cell c. MPR (multi-reduction printing)_cAnd A-MPR_cThe maximum transmission power is relaxed for ensuring that the radio frequency power has no influence on the electromagnetic environment in the serving cell c. P-MPR_cIs the maximum power back-off value set for serving cell c to meet the power management function. Delta T_C,cThe values of 1.5dB in some frequency bands (such as n1-n5, n7-8, n12, n14, n20, n25, n28, n30, n34, n38-41, n48, n50-51, n65-66, n70-71, n74, n77-84, n86) and 0dB and delta P in other frequency bands_PowerClassThe value can be 3dB or 0dB, delta T_IB,cIndicating for serving cell cAdditional tolerance. Delta T_RxSRSFor parameters for transmission of SRS, Δ T for frequency band n79_RxSRSThe value may be 4.5dB, Δ T for the frequency band with the highest frequency lower than the lowest frequency of the frequency band n79 among the other frequency bands_RxSRSThe value may be 3 dB. Wherein, the Δ P_PowerClassRepresents said P_PowerClassThe amount of offset of (c). For example, when the terminal device of power class 2 determines that at least one of the following three conditions is satisfied, Δ P of 3dB may be applied_PowerClass：

(1) The network equipment instructs the terminal equipment to use the transmitting power of 23dBm or lower;

(2) when the terminal device reports the proportion (maxUpLinkDutyCycle-PC2-FR1) of the uplink symbols supported by the terminal device to the network device in an evaluation period; the terminal equipment determines that the proportion of uplink symbols received from the network equipment exceeds the maxUpLinkDutyCycle-PC2-FR1 in an evaluation period;

(3) when the terminal equipment does not report the maxUplinkDutyCycle-PC2-FR1 to the network equipment; the terminal device determines that the proportion of uplink symbols received from the network device in an evaluation period exceeds 50%.

It should be understood that the P-MPR is changed to meet the electromagnetic regulation or radio frequency energy absorption rate (specific absorption rate), and any maximum power back-off set to meet the electromagnetic regulation or radio frequency energy absorption rate may be understood as the P-MPR.

First threshold and maximum transmission power P_CMAX,f,cCorrespondingly, the second threshold corresponds to the MPR, the third threshold corresponds to the A-MPR, the fourth threshold corresponds to the MPR and the A-MPR, the fifth threshold corresponds to the P-MPR, and the sixth threshold corresponds to the DeltaP_PowerClassAnd (7) corresponding.

Step S510 is an optional step, and the method 500 may also start directly from step S520.

S520, the terminal equipment judges that the PHR related parameters meet preset conditions.

Before S520, the method 500 may further include a step S521 of establishing or recovering a second RRC connection with the second access network device. The current terminal device has established a first RRC connection with the first access network device.

By way of example and not limitation, the first access network device may be associated with a first identity of the terminal device and the second access network device may be associated with a second identity of the terminal device. For example, the first identifier corresponds to a SIM card 1, the second identifier corresponds to a SIM card 2, and the terminal device may establish a first RRC connection with the first access network device through the SIM card 1, and establish a second RRC connection with the second access network device through the SIM card 2.

It should be noted that the first access network device and the second access network device may be the same access network device or different access network devices.

It should be noted that the communication method according to the embodiment of the present application is also applicable to a terminal device that supports only one SIM card. That is to say, the communication method of the embodiment of the present application is applicable to a terminal device capable of performing signal transmission with at least two access network devices at the same time. For example, a terminal device capable of Dual Connection (DC) with a first access network device and a second access network device. Moreover, the communication method of the embodiment of the present application is also applicable to a terminal device that performs signal transmission only with one access network device, and as described above, when the terminal device enters a dual-connection operating mode or the terminal device simultaneously starts other signal transmissions, a change in maximum transmission power may also occur.

Further, the preset condition comprises at least one of the following conditions, and the at least one condition is and/or a relationship between the at least one condition and the at least one condition:

the variation value of the maximum transmission power is greater than or equal to a first threshold value;

the change value of the MPR is greater than or equal to a second threshold;

the change value of the A-MPR is greater than or equal to a third threshold;

a sum of the change value of the MPR and the change value of the a-MPR is greater than or equal to a fourth threshold;

the change value of the P-MPR is greater than or equal to a fifth threshold;

the described Δ P_PowerClassIs greater than or equal to a sixth threshold;

the terminal equipment starts to apply the delta P_PowerClass；

The terminal equipment stops applying the delta P_PowerClass。

The preset condition may be a predefined condition. In addition, the Δ P_PowerClassThe variation value of (b) being greater than or equal to the sixth threshold value means: the amount of change in the power back-off due to the change in the maximum transmission power offset exceeds the sixth threshold, as shown in the formula in S510, when Δ P_PowerClassWhen changed, P_{CMAX_L,f,c}And P_{CMAX_H,f,c}Also changed, resulting in P_CMAX,f,cVarying, i.e. by applying different maximum transmit power offsets Δ P, when the terminal device applies the maximum transmit power offset to adjust the maximum transmit power_PowerClassDifferent maximum transmitting power P can be obtained_CMAX,f,cFor example, after the terminal device has a maximum transmit power of 26dBm and reaches a certain duration, the terminal device backs off the maximum transmit power to 23dBm by applying the maximum transmit power offset of 3dBm, the maximum transmit power offset variation at this time is 3dBm, the maximum transmit power back-off variation is 3dBm, and if 3dBm exceeds the sixth threshold, the terminal device reports the PHRAnd if the threshold value is not reached, the PHR is reported by the terminal equipment. The terminal device starts to apply the delta P_PowerClassThe method comprises the following steps: the terminal device applies the maximum transmission power offset to implement power backoff, for example, the terminal device of power class 2 applies Δ P of 3dB when the three conditions described in S510 are satisfied_PowerClass(ii) a Correspondingly, when the terminal equipment determines that the three conditions are no longer satisfied, the application of the delta P is stopped_PowerClassThe terminal device stops applying the delta P_PowerClassIt is also understood that the Δ P_PowerClassIs 0 dB. The embodiment of the application is not limited to the application of the delta P_PowerClassAnd the adjusted power of the terminal equipment. For example, for the power class 2 terminal device, determining that the proportion of uplink symbols transmitted in one evaluation period exceeds 50% or maxUpLinkDutyCycle-PC2-FR1, the terminal device adjusts the maximum transmit power offset from 0dB to 3dB, i.e., begins to apply the Δ P_PowerClass(ii) a Alternatively, it is determined that the proportion of uplink symbols transmitted during an evaluation period is below 50% or maxuplinkdtycycle-PC 2-FR1, the terminal device adjusts the maximum transmit power offset from 3dB to 0dB, i.e. stops applying said Δ P_PowerClass. By applying at delta P_PowerClassIs greater than or equal to a sixth threshold value, or the terminal device starts and/or stops applying said Δ P_PowerClassReporting PHR in time, which can avoid the situation of delta P_PowerClassAnd when the maximum transmitting power changes due to the change, the PHR is omitted to be reported, so that the network equipment can more accurately allocate communication resources, and the efficiency of uplink transmission is improved.

Illustratively, where the terminal device has established a first RRC connection with the first access network device, the terminal device establishes or resumes a second RRC connection. The above-mentioned variation value can be understood as a difference value between a relevant parameter value before the terminal device establishes or recovers the second RRC connection and a relevant parameter value after the terminal device establishes or recovers the second RRC connection in the case that the first access network device establishes the first RRC connection.

Further, in the case that the terminal device is transmitting the first uplink signal, the terminal device establishes or recovers the second RRC connection with the second access network device. The above-mentioned variation value may be a difference value between a relevant parameter value before the terminal device establishes or recovers the second RRC connection and a relevant parameter value after the terminal device establishes or recovers the second RRC connection in a case where the terminal device is transmitting the first uplink signal.

Alternatively, the terminal device sends the second uplink signal in case the terminal device has established the first RRC connection with the first access network device. In this case, the terminal device has established a second RRC connection with the second access network device. The above-mentioned variation value may be understood as a difference value between a relevant parameter value before the terminal device sends the second uplink signal and a relevant parameter value when the terminal device sends the second uplink signal, in a case where the terminal device has established the first RRC connection with the first access network device and has established the second RRC connection with the second access network device.

Further, in a case where the terminal device is transmitting the first uplink signal, the terminal device transmits the second uplink signal. In this case, the terminal device has established a first RRC connection with the first access network device and a second RRC connection with the second access network device. The above variation value may be understood as a difference value between a relevant parameter value before the terminal device sends the second uplink signal and a relevant parameter value when the terminal device sends the second uplink signal in a case where the terminal device is sending the first uplink signal and the terminal device has established the second RRC connection with the second access network device.

The first uplink signal corresponds to a first serving cell, and the second uplink signal corresponds to a second serving cell. One or more of the first to fifth thresholds may be protocol-specified values. In a possible design, after the terminal device determines that the PHR-related parameter meets a preset condition, the PHR reporting is triggered only after determining that a first duration is met, where the first duration is predefined or preconfigured, and the first duration is used to limit a period for reporting the PHR, so as to avoid frequent reporting by the terminal device, and further save communication resources. For example, the first duration is configured by PHR-ProhibitTimer, after the terminal device determines that the PHR-ProhibitTimer parameter meets the preset condition, the PHR-ProhibitTimer is reported only after being determined to be overtime or overtime, and by multiplexing the PHR-ProhibitTimer parameter, the network device can avoid frequent reporting of the PHR without consuming extra signaling. For another example, the period of reporting the PHR by the terminal device is indicated by another first time length indication information, and the PHR is applied differently from the existing PHR-ProhibitTimer parameter, so that more flexible PHR reporting period control is realized.

S530, the PHR is triggered to be reported to the first access network equipment.

Further, if the terminal device determines that the PHR related parameter meets the preset condition in S520 under the condition that the terminal device has already established the first RRC connection with the first access network device and has already established the second RRC connection with the second access network device, the terminal device may trigger the PHR to be reported to the first access network device and the second access network device.

Illustratively, the terminal device sends the second uplink signal in a case where the terminal device has established the first RRC connection with the first access network device. In this case, the terminal device has established a second RRC connection with the second access network device. When the terminal device judges that the PHR related parameters meet the preset conditions, the PHR can be triggered to be reported to the first access network device and the second access network device.

Further, in a case where the terminal device is transmitting the first uplink signal, the terminal device transmits the second uplink signal. In this case, the terminal device has established a first RRC connection with the first access network device and a second RRC connection with the second access network device. When the terminal device judges that the PHR related parameters meet the preset conditions, the PHR can be triggered to be reported to the first access network device and the second access network device. In one possible design, the PHR reported by the terminal device includes the maximum transmission power P of the serving cell c of the terminal device on the carrier f_CMAX,f,cAnd/or the power headroom of the serving cell c of the terminal device on the carrier f, through PHR reporting, the network device may determine the power situation that the terminal device can use on the serving cell c of the carrier f, and so onAnd the transmission resources are more accurately allocated, and the resource utilization rate and the uplink transmission efficiency are improved.

According to the scheme of the embodiment of the application, when the PHR changes, for example, due to the fact that the terminal device establishes two RRC connections, the PHR reporting can be triggered according to the PHR reporting trigger condition, and the access network device is informed of a more accurate PHR value after the PHR changes, so that the access network device can accurately judge whether resources allocated to the terminal device are appropriate, and accuracy of data transmission is guaranteed.

Fig. 6 shows a schematic diagram of an apparatus 600 for wireless communication according to an embodiment of the present application. The apparatus 600 may be a terminal device, or may be a chip or a circuit, for example, a chip or a circuit that may be disposed on a terminal device.

The apparatus 600 may include a processing unit 610 (i.e., an example of a processing unit) and a storage unit 620. The storage unit 620 is used to store instructions.

The processing unit 610 is configured to execute the instructions stored in the storage unit 620, so as to enable the apparatus 600 to implement the steps performed by the terminal device in the method described above.

Further, the apparatus 600 may also include an input port 630 and an output port 640. Further, the processing unit 610, the memory unit 620, the input port 630, and the output port 640 may communicate with each other via internal communication paths to transmit control and/or data signals. The storage unit 620 is used for storing a computer program, and the processing unit 610 may be used for calling and running the computer program from the storage unit 620 to control the input port 630 to receive a signal and control the output port 640 to send a signal, so as to complete the steps of the terminal device in the above method. The storage unit 620 may be integrated into the processing unit 610 or may be provided separately from the processing unit 610.

Alternatively, if the apparatus 600 is a communication device (e.g., a terminal device), the input port 630 is a receiver and the output port 640 is a transmitter. Wherein the receiver and the transmitter may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver.

Alternatively, if the device 600 is a chip or a circuit, the input port 630 is an input interface, and the output port 640 is an output interface.

As an implementation manner, the functions of the input port 630 and the output port 640 may be implemented by a transceiver circuit or a dedicated chip for transceiving. The processing unit 610 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processing unit or a general-purpose chip.

As another implementation manner, a manner of using a general-purpose computer to implement the communication device provided in the embodiment of the present application may be considered. Program codes that will realize the functions of the processing unit 610, the input port 630, and the output port 640 are stored in the storage unit 620, and a general-purpose processing unit realizes the functions of the processing unit 610, the input port 630, and the output port 640 by executing the codes in the storage unit 620.

In one implementation, the processing unit 610 is configured to determine that an intermodulation distortion, IMD, exists between a frequency band of a first serving cell and a frequency band of a second serving cell. The processing unit 610 is further configured to control the output port 740 to send a first message to a first access network device, where the first message is used to request to release a first radio resource control RRC connection, or to request handover, or to indicate a time division multiplexing TDM mode, where the first RRC connection is an RRC connection established with the first access network device, the first access network device is an access network device to which the first serving cell belongs, and the TDM mode is applied to the first serving cell. Processing unit 610 is further configured to control input port 630 to receive a second message from the first access network device, where the second message is used to indicate to release the first RRC connection, or to indicate a handover, or to respond to the TDM pattern.

Optionally, the first message includes auxiliary information, and the auxiliary information includes uplink frequency band information and/or downlink frequency band information of the second serving cell.

Optionally, the TDM pattern is used to indicate that a period of a first uplink transmission and a period of a first downlink transmission are different, where the first uplink transmission and the first downlink transmission correspond to the first serving cell.

Optionally, a period of a second uplink transmission is different from a period of a first uplink transmission indicated by the TDM mode, where the first uplink transmission corresponds to the first serving cell, and the second uplink transmission corresponds to the second serving cell.

Optionally, the first message is associated with a first identifier of the terminal device.

In another implementation manner, the processing unit 610 is configured to determine that a PHR-related parameter meets a preset condition; the processing unit 610 is further configured to control the output port 640 to trigger the PHR to be reported to the first access network device, where the PHR-related parameter includes at least one of: maximum transmit power of the terminal device, maximum power reduction, MPR, of the terminal device, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass。

Optionally, the preset condition includes at least one of the following conditions: the variation value of the maximum transmission power is greater than or equal to a first threshold value; the change value of the MPR is greater than or equal to a second threshold; the change value of the A-MPR is greater than or equal to a third threshold; a sum of the change value of the MPR and the change value of the a-MPR is greater than or equal to a fourth threshold; the change value of the P-MPR is greater than or equal to a fifth threshold; the described Δ P_PowerClassIs greater than or equal to a sixth threshold; the terminal equipment starts to apply the delta P_PowerClass(ii) a The terminal equipment stops applying the delta P_PowerClass。

Optionally, the processing unit 610 is further configured to control the input port 630 to receive the first threshold, the second threshold, the third threshold, the fourth threshold, the fifth threshold, and/or the sixth threshold from the first access network device.

Optionally, before the determining that the PHR-related parameter satisfies the preset condition, the method further includes: establishing or recovering a first RRC connection with the first access network device; and/or establishing or recovering a second RRC connection with a second access network device.

Optionally, the first access network device is associated with a first identifier of the terminal device, and the second access network device is associated with a second identifier of the terminal device.

For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus 600, reference is made to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

The functions and actions of the modules or units in the apparatus 600 listed above are only exemplary descriptions, the apparatus 600 is configured or itself is a terminal device, and the modules or units in the apparatus 600 may be used to execute the actions or processing procedures executed by the terminal device in the above method, and detailed descriptions thereof are omitted to avoid redundant description.

Fig. 7 is a diagram of an apparatus 700 for wireless communication according to an embodiment of the present disclosure.

The apparatus 700 may be an access network device (e.g., a first access network device or a second access network device), or may be a chip or a circuit, such as a chip or a circuit that may be disposed in the access network device.

The apparatus 700 may include a processing unit 710 (i.e., an example of a processing unit) and a storage unit 720. The storage unit 720 is used to store instructions.

The processing unit 710 is configured to execute the instructions stored by the storage unit 720, so as to enable the apparatus 700 to implement the steps performed by the access network device (e.g., the first access network device or the second access network device) in the method described above.

Further, the apparatus 700 may further include an input 730 and an output 740. Further, the processing unit 710, the memory unit 720, the input 730 and the output 740 may communicate with each other via internal connection paths to transfer control and/or data signals. The storage unit 720 is used for storing a computer program, and the processing unit 710 may be used for calling and running the computing program from the storage unit 720 to control the input port 730 to receive a signal and control the output port 740 to send a signal, so as to complete the steps of accessing the network device in the above method. The storage unit 720 may be integrated into the processing unit 710 or may be provided separately from the processing unit 710.

Alternatively, if the apparatus 700 is a communication device (e.g., an access network device), the input port 730 is a receiver and the output port 740 is a transmitter. Wherein the receiver and the transmitter may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver.

Alternatively, if the device 700 is a chip or a circuit, the input port 730 is an input interface and the output port 740 is an output interface.

As an implementation, the functions of the input port 730 and the output port 740 may be implemented by a transceiver circuit or a dedicated chip for transceiving. The processing unit 710 may be considered to be implemented by a dedicated processing chip, a processing circuit, a processing unit, or a general-purpose chip.

As another implementation manner, the communication device (e.g., access network device) provided by the embodiment of the present application may be implemented by using a general-purpose computer. Program codes that will realize the functions of processing unit 710, input ports 730 and output ports 740 are stored in memory unit 720, and a general-purpose processing unit realizes the functions of processing unit 710, input ports 730 and output ports 740 by executing the codes in memory unit 720.

In one implementation, the processing unit 710 is configured to control the input port 730 to receive a first message from a terminal device, where the first message is used to request to release a first RRC connection, or to request handover, or to indicate a time division multiplexing TDM mode, where the first RRC connection is an RRC connection established with the terminal device, the TDM mode is applied to the first serving cell, and the first message is a message sent by the terminal device when it is determined that an IMD exists between a frequency band of the first serving cell and a frequency band of a second serving cell. The processing unit 710 is further configured to control the output port 740 to send a second message to the terminal device, where the second message is used to indicate to release the first RRC connection, or to indicate handover, or to respond to the TDM mode.

Optionally, the TDM mode is used to indicate that a time period of a first uplink transmission and a time period of a first downlink transmission are different, where the first uplink transmission and the first downlink transmission correspond to the first serving cell.

In another implementation, the processing unit 710 is configured to control the output port 740 to send a threshold information set to the terminal device, where the threshold information set includes at least one of: a first threshold, a second threshold, a third threshold, a fourth threshold, a fifth threshold, and a sixth threshold, the set of threshold information corresponding to power headroom report, PHR, related parameters, wherein the PHR related parameters include at least one of: maximum transmit power of a terminal device, maximum power reduction, MPR, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClassThe first threshold value and the maximum transmission powerThe second threshold corresponds to the MPR, the third threshold corresponds to the a-MPR, the fourth threshold corresponds to the MPR and the a-MPR, the fifth threshold corresponds to the P-MPR, and the sixth threshold corresponds to Δ P_PowerClassAnd (7) corresponding. The processing unit 710 is further configured to control the input port 730 to receive the PHR from the terminal device.

The terminal equipment meets preset conditions, wherein the preset conditions comprise at least one of the following conditions:

the change value of the MPR is greater than or equal to a second threshold;

the change value of the A-MPR is greater than or equal to a third threshold;

the change value of the P-MPR is greater than or equal to a fifth threshold;

the Δ P_PowerClassIs greater than or equal to a sixth threshold;

the terminal equipment starts to apply the delta P_PowerClass；

The terminal equipment stops applying the delta P_PowerClass。

The functions and actions of each module or unit in the apparatus 700 listed above are merely exemplary illustrations, and when the apparatus 700 is configured or itself is an access network device, each module or unit in the apparatus 700 may be configured to execute each action or processing procedure executed by the access network device in the foregoing method, and here, detailed descriptions thereof are omitted to avoid redundancy.

For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus 700, reference is made to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

Fig. 8 shows a schematic diagram of a wireless communication device 800 according to an embodiment of the present application. It should be understood that the apparatus 800 may perform each step performed by the terminal device in the above method embodiments.

In one implementation, the method includes: a transceiving unit 810 and a processing unit 820. The transceiver unit 810 may also be two units, such as a transmitting unit and a receiving unit.

In one implementation, the processing unit 820 may be configured to determine that an intermodulation distortion, IMD, exists between a frequency band of a first serving cell and a frequency band of a second serving cell; the processing unit 820 may be further configured to control the transceiver unit 810 to send a first message to a first access network device, where the first message is used to request release of a first radio resource control RRC connection, or is used to request handover, or is used to indicate a time division multiplexing TDM mode, where the first RRC connection is an RRC connection established with the first access network device, the first access network device is an access network device to which the first serving cell belongs, and the TDM mode is applied to the first serving cell; the processing unit 820 may be further configured to control the transceiver unit 810 to receive a second message from the first access network device, where the second message is used to indicate to release the first RRC connection, or to indicate handover, or to respond to the TDM pattern.

In another implementation manner, the processing unit 820 may be configured to determine that a power headroom report, PHR, related parameter meets a preset condition; the transceiver unit 810 may further be configured to trigger reporting of a PHR to a first access network device, where the PHR-related parameter includes at least one of: maximum transmit power of a terminal device, maximum power reduction, MPR, of the terminal device, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass。

Fig. 9 shows a schematic diagram of a wireless communication device 900 according to an embodiment of the application. It should be understood that the apparatus 900 may perform each step performed by the first access network device or the second access network device in the above method embodiments.

The apparatus 900 includes a transceiving unit 910 and a processing unit 920. The transceiver unit may also be two units, e.g. a transmitting unit and a receiving unit.

In one implementation, the processing unit 920 may be configured to control the transceiving unit 910 to receive a first message from a terminal device, where the first message is used to request to release a first RRC connection, or to request handover, or to indicate a time division multiplexing TDM (TDM) mode, where the first RRC connection is an RRC connection established with the terminal device, the TDM mode is applied to the first serving cell, and an IMD exists between a frequency band of the first serving cell and a frequency band of a second serving cell of the terminal device; the processing unit 920 may be further configured to control the transceiving unit 910 to send a second message to the terminal device, where the second message is used to indicate to release the first RRC connection, or to indicate handover, or to respond to the TDM mode.

In another implementation manner, the processing unit 920 may be configured to control the transceiver unit 910 to send a threshold information set to a terminal device, where the threshold information set includes at least one of: a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold, the set of threshold information corresponding to power headroom report, PHR, related parameters, wherein the PHR-related parameters include at least one of: maximum transmit power of a terminal device, maximum power reduction, MPR, of the terminal device, additional maximum power reduction, A-MPR, of the terminal device, power management maximum power reduction, P-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClassThe first threshold corresponds to the maximum transmit power, the second threshold corresponds to the MPR, the third threshold corresponds to the a-MPR, the fourth threshold corresponds to the MPR and the a-MPR, and the fifth threshold corresponds to the P-MPR; the described Δ P_PowerClassIs greater than or equal to a sixth threshold; the terminal equipment starts to apply the delta P_PowerClass(ii) a The terminal equipment stops applying the delta P_PowerClass. The processing unit 920 may be configured to control the transceiver unit 910 to receive the PHR from the terminal device.

Fig. 10 is a schematic block diagram of a communication apparatus 1000 according to an embodiment of the present application. It should be understood that the communication device may be configured to perform each step performed by the terminal device in the above method example, and may also be configured to perform each step performed by the access network device in the above method embodiment. To avoid repetition, this is not described in detail here. The communication apparatus 1000 includes:

a memory 1010 for storing a program; the memory 1010 is an optional module.

A communication interface 1020 for communicating with other devices;

a processor 1030 for executing programs in memory 1010.

It should be understood that the communication device 1000 shown in fig. 10 may be a chip or a circuit. Such as a chip or circuit that may be provided in the terminal device or a chip or circuit that may be provided in the access network device. The communication interface 1020 may also be a transceiver. The transceiver includes a receiver and a transmitter. Further, the communication apparatus 1000 may also include a bus system.

The processor 1030, the memory 1010, the receiver and the transmitter are connected through a bus system, and the processor 1030 is configured to execute instructions stored in the memory 1010 to control the receiver to receive signals and control the transmitter to transmit signals, so as to complete steps of a terminal device or an access network device in the communication method of the present application. Wherein the receiver and the transmitter may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver. The memory 1010 may be integrated with the processor 1030 or may be provided separately from the processor 1030.

As an implementation manner, the functions of the receiver and the transmitter may be considered to be implemented by a transceiving circuit or a transceiving dedicated chip. Processor 1030 may be considered to be implemented by a special purpose processing chip, processing circuit, processor, or a general purpose chip.

Fig. 11 shows a simplified schematic diagram of a possible design structure of the terminal device involved in the above-described embodiment. The terminal device includes a transmitter 1101, a receiver 1102, a controller/processor 1103, a memory 1104, and a modem processor 1105.

The transmitter 1101 is configured to transmit an uplink signal, which is transmitted to the access network device in the above-described embodiment via the antenna. On the downlink, the antenna receives the downlink signal transmitted by the access network device in the above embodiment. The receiver 1102 is used to receive downlink signals received from the antennas. In modem processor 1105, an encoder 1106 receives and processes traffic data and signaling messages to be transmitted on the uplink. A modulator 1107 further processes (e.g., symbol maps and modulates) the encoded traffic data and signaling messages and provides output samples. A demodulator 1109 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 1108 processes (e.g., decodes) the symbol estimates and provides decoded data and signaling messages that are sent to the terminal device. Encoder 1106, modulator 1107, demodulator 1109, and decoder 1108 may be implemented by a combined modem processor 1105. These elements are processed according to the radio access technology employed by the radio access network.

The controller/processor 1103 controls and manages the operation of the terminal device, and is configured to execute the processing performed by the terminal device in the above-described embodiment. For example, other procedures for controlling the terminal device to receive the second message from the first access network device and release the first RRC connection and/or techniques described herein based on the second message. As an example, the controller/processor 1103 is configured to support the terminal device to perform processes S210 and S230 in fig. 2.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps 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 can be clearly understood by those skilled in the art that, for convenience and simplicity 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, the division of the units is only one 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.

The 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 an access network device) to perform 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 of wireless communication, comprising:

determining that an inter-modulation distortion (IMD) exists between the frequency band of the first serving cell and the frequency band of the second serving cell;

sending a first message to a first access network device, where the first message is used to request release of a first Radio Resource Control (RRC) connection, or to request handover, or to indicate a Time Division Multiplexing (TDM) pattern, where the first RRC connection is an RRC connection established with the first access network device, the first access network device is an access network device to which the first serving cell belongs, and the TDM pattern is applied to the first serving cell;

receiving a second message from the first access network device, the second message being used for indicating to release the first RRC connection, or for indicating handover, or for responding to the TDM pattern.
The wireless communication method of claim 1, wherein the first message comprises a cause value indicating the presence of an IMD.
The wireless communication method according to claim 1 or 2, wherein the first message comprises assistance information, the assistance information comprising uplink frequency band information and/or downlink frequency band information of the second serving cell.
The wireless communication method of any of claims 1-3, wherein the TDM pattern is used to indicate that a period of a first uplink transmission and a period of a first downlink transmission are different, wherein the first uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communication method of any of claims 1-3, wherein a period of a second uplink transmission and a period of a first uplink transmission indicated by the TDM pattern are different, wherein the first uplink transmission corresponds to the first serving cell and the second uplink transmission corresponds to the second serving cell.
The wireless communication method of any of claims 1 to 5, wherein the first serving cell is associated with a first identity of a terminal device and the second serving cell is associated with a second identity of the terminal device.
The wireless communication method of claim 6, wherein the first message is associated with a first identification of the terminal device.
A wireless communication method, wherein the method is applied to a terminal device, and comprises:

determining that a Power Headroom Report (PHR) -related parameter satisfies a preset condition, the PHR-related parameter including at least one of:

maximum transmit power of the terminal device, maximum power reduction, MPR, additional maximum power reduction, A-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass；

And sending the PHR to the first access network equipment.
The wireless communication method of claim 8, wherein the PHR-related parameter satisfying a preset condition comprises at least one of:

the variation value of the maximum transmission power is greater than or equal to a first threshold value; or

The change value of the MPR is greater than or equal to a second threshold; or

The change value of the A-MPR is greater than or equal to a third threshold; or

A sum of the change value of the MPR and the change value of the a-MPR is greater than or equal to a fourth threshold; or

The described Δ P_PowerClassIs greater than or equal to a sixth threshold; or

The terminal device starts to apply the delta P_PowerClass(ii) a Or

The terminal equipment stops applying the delta P_PowerClass。
The wireless communication method of claim 8 or 9, wherein the method further comprises:

receiving the first threshold, the second threshold, the third threshold, the fourth threshold, and/or the sixth threshold from the first access network device.
The wireless communication method of any of claims 8 to 10, wherein prior to transmitting the PHR to the first access network device, the method further comprises:

it is determined that the prohibit timer has timed out or has timed out.
The wireless communication method according to any of claims 8 to 11, wherein before the determining that the power headroom report, PHR, related parameter satisfies a preset condition, the method further comprises:

establishing or resuming a first radio resource control, RRC, connection with the first access network device; and/or

Establishing or resuming a second RRC connection with the second access network device.
The wireless communication method of claim 12, wherein the first access network device is associated with a first identity of the terminal device and the second access network device is associated with a second identity of the terminal device.
A method of wireless communication, comprising:

receiving a first message from a terminal device, wherein the first message is used for requesting to release a first Radio Resource Control (RRC) connection, or requesting to switch, or indicating a Time Division Multiplexing (TDM) mode, the first RRC connection is established with the terminal device, the TDM mode is applied to a first serving cell of the terminal device, and the first message is sent by the terminal device under the condition that IMD exists between a frequency band of the first serving cell and a frequency band of a second serving cell;

and sending a second message to the terminal equipment, wherein the second message is used for indicating to release the first RRC connection, or for indicating to switch, or for responding to the TDM pattern.
The wireless communication method of claim 14, wherein the first message comprises a cause value indicating that an intermodulation distortion (IMD) is present for the terminal device.
The wireless communication method according to claim 14 or 15, wherein the first message comprises assistance information, the assistance information comprising uplink frequency band information and/or downlink frequency band information of the second serving cell.
The method of wireless communication of any of claims 14 to 16, wherein the TDM pattern indicates that a period of a first uplink transmission and a period of a first downlink transmission are different, wherein the first uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communication method of any of claims 14 to 16, wherein a period of a second uplink transmission and a period of a first uplink transmission indicated by the TDM pattern are different, wherein the first uplink transmission corresponds to the first serving cell and the second uplink transmission corresponds to the second serving cell.
The wireless communication method of any of claims 14 to 18, wherein the first serving cell is associated with a first identity of the terminal device and the second serving cell is associated with a second identity of the terminal device.
The wireless communication method of claim 19, wherein the first message is associated with a first identification of the terminal device.
A wireless communication method, wherein the method is applied to an access network device, and comprises:

sending a threshold information set to a terminal device, wherein the threshold information set comprises at least one of the following:

a first threshold, a second threshold, a third threshold, a fourth threshold, or a sixth threshold,

the set of threshold information corresponds to power headroom report, PHR, related parameters, wherein the PHR related parameters include at least one of:

maximum transmit power of the terminal device, maximum power reduction, MPR, additional maximum power reduction, A-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass，

The first threshold corresponds to the maximum transmit power, the second threshold corresponds to the MPR, the third threshold corresponds to the A-MPR, the fourth threshold corresponds to the MPR and the A-MPR, and the sixth threshold corresponds to the Δ P_PowerClassCorresponding;

receiving the PHR from the terminal equipment.
The wireless communication method according to claim 21, wherein the terminal device satisfies a preset condition, the preset condition including at least one of the following conditions:

the variation value of the maximum transmission power is greater than or equal to the first threshold; or

The change value of the MPR is greater than or equal to the second threshold; or

The change value of the A-MPR is greater than or equal to the third threshold; or

The sum of the change value of the MPR and the change value of the a-MPR is greater than or equal to the fourth threshold; or

The described Δ P_PowerClassIs greater than or equal to a sixth threshold; or

The terminal device starts to apply the delta P_PowerClass(ii) a Or

The terminal equipment stops applying the delta P_PowerClass。
A wireless communications apparatus, comprising:

a processing unit for determining that an inter-modulation distortion, IMD, exists between a frequency band of a first serving cell and a frequency band of a second serving cell;

a sending unit, configured to send a first message to a first access network device, where the first message is used to request release of a first radio resource control RRC connection, or is used to request handover, or is used to indicate a time division multiplexing TDM mode, where the first RRC connection is an RRC connection established with the first access network device, the first access network device is an access network device to which the first serving cell belongs, and the TDM mode is applied to the first serving cell;

a receiving unit, configured to receive a second message from the first access network device, where the second message is used to indicate to release the first RRC connection, or is used to indicate handover, or is used to respond to the TDM mode.
The wireless communications apparatus of claim 23, wherein the first message comprises a cause value indicating the presence of an IMD.
The wireless communications apparatus of claim 23 or 24, wherein the first message includes assistance information including uplink frequency band information and/or downlink frequency band information of the second serving cell.
The wireless communications apparatus of any of claims 23-25, wherein the TDM pattern indicates that a period of a first uplink transmission and a period of a first downlink transmission are different, wherein the first uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communications apparatus of any of claims 23-25, wherein a period of a second uplink transmission and a period of a first uplink transmission indicated by the TDM pattern are different, wherein the first uplink transmission corresponds to the first serving cell and the second uplink transmission corresponds to the second serving cell.
The wireless communications apparatus of any of claims 23-27, wherein the first serving cell is associated with a first identity of a terminal device and the second serving cell is associated with a second identity of the terminal device.
The wireless communications apparatus of claim 28, wherein the first message is associated with a first identification of the terminal device.
A wireless communications apparatus, comprising:

a processing unit configured to determine that a power headroom report, PHR, related parameter satisfies a preset condition, the PHR related parameter including at least one of:

a maximum transmit power of the wireless communication apparatus, a Maximum Power Reduction (MPR) of the wireless communication apparatus, an additional maximum power reduction (A-MPR) of the wireless communication apparatus, and a maximum transmit power offset (Δ P) of the wireless communication apparatus_PowerClass；

A sending unit, configured to send the PHR to a first access network device.
The wireless communications apparatus of claim 30, wherein the PHR-related parameter satisfying a preset condition comprises at least one of:

the variation value of the maximum transmission power is greater than or equal to a first threshold value; or

The change value of the MPR is greater than or equal to a second threshold; or

The change value of the A-MPR is greater than or equal to a third threshold; or

A sum of the change value of the MPR and the change value of the a-MPR is greater than or equal to a fourth threshold; or

The described Δ P_PowerClassIs greater than or equal to a sixth threshold; or

The wireless communication device starts to apply the delta P_PowerClass(ii) a Or

The wireless communication device stops applying the delta P_PowerClass。
The wireless communications apparatus of claim 30 or 31, wherein the apparatus further comprises a receiving unit configured to receive the first threshold, the second threshold, the third threshold, the fourth threshold, and/or the sixth threshold from the first access network device.
The wireless communications apparatus of any of claims 30-32, wherein the processing unit is further configured to determine that a prohibit timer has expired or has expired before transmitting the PHR to a first access network device.
The wireless communications apparatus of any of claims 30-33, wherein the processing unit is further configured to:

before the Power Headroom Report (PHR) related parameter is judged to meet the preset condition, establishing or recovering a first Radio Resource Control (RRC) connection with the first access network equipment; and/or

Establishing or resuming a second RRC connection with the second access network device.
The wireless communications apparatus of claim 34, wherein the first access network device is associated with a first identity of the terminal device and the second access network device is associated with a second identity of the terminal device.
A wireless communications apparatus, comprising:

a receiving unit, configured to receive a first message from a terminal device, where the first message is used to request release of a first radio resource control RRC connection, or is used to request handover, or is used to indicate a time division multiplexing TDM mode, where the first RRC connection is an RRC connection established with the terminal device, the TDM mode is applied to a first serving cell of the terminal device, and the first message is a message sent by the terminal device when it is determined that an IMD exists between a frequency band of the first serving cell and a frequency band of a second serving cell;

a sending unit, configured to send a second message to the terminal device, where the second message is used to indicate to release the first RRC connection, or to indicate handover, or to respond to the TDM mode.
The wireless communications apparatus of claim 36, wherein the first message comprises a cause value indicating the terminal device presence of an IMD.
The wireless communications apparatus of claim 36 or 37, wherein the first message includes assistance information, which includes uplink frequency band information and/or downlink frequency band information of the second serving cell.
The wireless communications apparatus of any of claims 36-38, wherein the TDM pattern indicates that a period of a first uplink transmission and a period of a first downlink transmission are different, wherein the first uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communications apparatus of any of claims 36-38, wherein a period of a second uplink transmission and a period of a first uplink transmission indicated by the TDM pattern are different, wherein the first uplink transmission corresponds to the first serving cell and the second uplink transmission corresponds to the second serving cell.
The wireless communications apparatus of any of claims 36-40, wherein the first serving cell is associated with a first identity of a terminal device and the second serving cell is associated with a second identity of the terminal device.
The wireless communications apparatus of claim 41, wherein the first message is associated with a first identification of the terminal device.
A wireless communications apparatus, comprising:

a sending unit, configured to send a threshold information set to a terminal device, where the threshold information set includes at least one of:

a first threshold value, a second threshold value, a third threshold value, a fourth threshold value, and a sixth threshold value,

the set of threshold information corresponds to power headroom report, PHR, related parameters, wherein the PHR related parameters include at least one of:

maximum transmit power of the terminal device, maximum power reduction, MPR, additional maximum power reduction, A-MPR, of the terminal device, and maximum transmit power offset, Δ P, of the terminal device_PowerClass，

The first threshold corresponds to the maximum transmit power, the second threshold corresponds to the MPR, the third threshold corresponds to the A-MPR, the fourth threshold corresponds to the MPR and the A-MPR, and the sixth threshold corresponds to the Δ P_PowerClassCorresponding;

a receiving unit, configured to receive the PHR from the terminal device.
The wireless communication apparatus of claim 43, wherein the terminal device satisfies a preset condition, the preset condition comprising at least one of:

the variation value of the maximum transmission power is greater than or equal to the first threshold; or

The change value of the MPR is greater than or equal to the second threshold; or

The change value of the A-MPR is greater than or equal to the third threshold; or

The sum of the change value of the MPR and the change value of the a-MPR is greater than or equal to the fourth threshold; or

The described Δ P_PowerClassIs greater than or equal to a sixth threshold; or

The terminal device starts to apply the delta P_PowerClass(ii) a Or

The terminal equipment stops applying the delta P_PowerClass。
A communication device comprising at least one processor, and a communication interface,

the communication interface is connected with the at least one processor, the communication interface is used for acquiring a program or an instruction, and the processor executes the program or the instruction to execute the wireless communication method according to any one of claims 1 to 7, or execute the wireless communication method according to any one of claims 8 to 13, or execute the wireless communication method according to any one of claims 14 to 20, or execute the wireless communication method according to claim 21 or 22.
A computer-readable storage medium, having stored thereon a computer program which, when run on a computer,

causing the computer to perform the wireless communication method of any one of claims 1 to 7, or to perform the wireless communication method of any one of claims 8 to 13, or to perform the wireless communication method of any one of claims 14 to 20, or to perform the wireless communication method of claim 21 or 22.