WO2021062730A1

WO2021062730A1 - Wireless communication method and device

Info

Publication number: WO2021062730A1
Application number: PCT/CN2019/109641
Authority: WO
Inventors: 陈磊; 龙毅; 李秉肇; 刘哲
Original assignee: 华为技术有限公司
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-04-08
Also published as: CN114451053A; WO2021063071A1

Abstract

The present application provides a wireless communication method and device. Said method comprises: a terminal device determining that intermodulation distortion (IMD) exists between the frequency band of a first serving cell and the frequency band of a second serving cell; sending a first message to a first access network device, for requesting a first radio resource control (RRC) connection to be released or for requesting a handover or for indicating a time division multiplexing (TDM) mode, the TDM mode being applied to the first serving cell; and the terminal device receiving a second message from the first access network device, the second message being used for instructing the first RRC connection to be released or for indicating a handover or for responding to the TDM mode. The communication method provided in the present application can reduce the impact caused by the IMD problem, and improve the accuracy of data transmission.

Description

Wireless communication method and device

Technical field

This application relates to the field of communication, and more specifically, to a wireless communication method and device.

Background technique

At present, more and more terminal devices, such as smart phones, can simultaneously transmit signals with two serving cells. For example, a terminal device that supports two subscriber identification module (SIM) cards inserted at the same time, one SIM card is used for private business, and the other SIM card is used for work business; or one SIM card is used for data business , The other SIM card is used for voice services. This business model can be called a dual card model. The dual cards can belong to the same mobile operator or different mobile operators, or the dual cards can belong to the same standard or different standards. For example, the standard may include new radio (NR), long term evolution (LTE) system, wideband code division multiple access (WCDMA) system, code division multiple access (code division multiple access, WCDMA) system. multiple access, CDMA) system and global system for mobile communications (GSM) system. For a terminal device that can perform signal transmission with two serving cells at the same time, when the terminal device establishes a radio resource control (RRC) connection with both serving cells, the data transmission method in the prior art may cause data The transmission is inaccurate. For example, if there is an intermodulation distortion (IMD) problem in the frequency bands of the two serving cells, when the terminal device performs uplink signal transmission with the two serving cells at the same time, the terminal device will communicate with one of the serving cells. Downlink signal transmission has an impact, resulting in a decrease in the receiving sensitivity of the downlink signal, which in turn causes inaccurate data transmission. For another example, after the terminal device has established an RRC connection with the two serving cells, the power headroom report (PHR) has changed, but the PHR report is not triggered again, resulting in the PHR obtained by the access network device is no longer accurate , Resulting in inaccurate data transmission.

Summary of the invention

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

In a first aspect, a wireless communication method is provided, including: determining that there is an intermodulation distortion IMD between a frequency band of a first serving cell and a frequency band of a second serving cell; sending a first message to a first access network device, said The first message is used to request the release of the first radio resource control RRC connection, or to request handover, or to indicate the time division multiplexing TDM mode, wherein the first RRC connection is connected to the first access network RRC connection established by the device, the first access network device is the access network device to which the first serving cell belongs, and the TDM mode is applied to the first serving cell; The second message of the device, where the second message is used to instruct to release the first RRC connection, or to instruct handover, or to respond to the TDM mode.

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

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

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

The above list is only an example, and does not limit the application. For example, when the first message is used to request the 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 instruct to release the first RRC connection.

According to the solution of the embodiment of the present application, the terminal device can send a first message to the access network device after determining that IMD exists, so that the first access network device can release the first RRC connection or switch the current serving cell or determine the TMD mode to reduce IMD The impact of the problem has improved the accuracy of data transmission. Specifically, the terminal device may send a first message to the access network device after determining that IMD exists, so that the first access network device releases the first RRC connection, and prevents the terminal device from simultaneously signaling with the first serving cell and the second serving cell Transmission to reduce the impact of 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 terminal device and the first access network device are changed The frequency band for signal transmission to reduce the impact of IMD problems; or the terminal device sends a first message to the first access network device to notify the first access network device of the TDM mode, reducing the impact of IMD problems and improving data transmission Accuracy.

With reference to the first aspect, in some implementations of the first aspect, the first message includes a cause value, and the cause value is used to indicate the presence of IMD.

According to the solution of the embodiment of the present application, the cause value can assist the first access network device to make a decision. The first access network device may determine, according to the cause value, that there is an IMD between the frequency bands of at least two serving cells that perform 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 according to the auxiliary information.

With reference to the first aspect, in some implementations 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 solution of the embodiment of the present 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 downlink frequency band information of the second serving cell, so that the frequency band of the target serving cell is the same as There is no IMD between the frequency bands of the second serving cell, which reduces the impact of the IMD problem.

With reference to the first aspect, in some implementations of the first aspect, the TDM mode is used to indicate that the period of the first uplink transmission is different from the period of the first downlink transmission, wherein the first uplink transmission and the The first downlink transmission corresponds to the first serving cell.

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

According to the solution of the embodiment of the present application, it is ensured that the terminal equipment and the first serving cell do not transmit uplink signals and downlink signals at the same time, which reduces the impact of IMD problems and improves the accuracy of data transmission.

With reference to the first aspect, in some implementations of the first aspect, the period of the second uplink transmission is different from the period of the first uplink transmission indicated by the TDM mode, wherein the first uplink transmission corresponds to all For the first serving cell, the second uplink transmission corresponds to the second serving cell.

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

According to the solution of the embodiment of the present application, it is ensured that the terminal device does not send the first uplink signal and the second uplink signal at the same time, which reduces the impact of the IMD problem and improves the accuracy of data transmission.

With reference to the first aspect, in some implementations of the first aspect, 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.

With reference to the first aspect, in some implementation manners 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: determining that PHR related parameters of a power headroom report meet a preset condition; triggering PHR reporting to a first access network device, wherein the PHR related parameters include at least one of the following: The maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power management maximum power fallback P-MPR of the terminal device.

According to the solution of the embodiment of the present application, when the PHR changes, the PHR report can be triggered according to whether the PHR related parameters meet the preset conditions, and the access network equipment is notified of the more accurate PHR value after the change, so that the access network equipment can accurately determine Whether the resources allocated to the terminal equipment are appropriate ensures the accuracy of data transmission.

With reference to the second aspect, in some implementations of the second aspect, the preset condition includes at least one of the following conditions: the change value of the maximum transmit power is greater than or equal to a 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 value of the P-MPR The change value is greater than or equal to the fifth threshold.

Specifically, the preset condition is a predefined condition.

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

With reference to the second aspect, in some implementations of the second aspect, before the determining that the PHR related parameters of the power headroom report meet the preset condition, the method further includes: establishing or restoring with the first access network device The first RRC connection; the second RRC connection is established or restored with the second access network device.

According to the solution of the embodiment of the present application, when a terminal device establishes two RRC connections and causes a PHR change, it can be judged whether the PHR parameters meet the above preset conditions, trigger PHR reporting, and notify the access network device of the more accurate PHR value after the change, so that The access network equipment can accurately determine whether the resources allocated to the terminal equipment are appropriate, ensuring the accuracy of data transmission.

With reference to the second aspect, in some implementations of the second aspect, the first access network device is associated with the first identity of the terminal device, and the second access network device is associated with the first identity of the terminal device. 2. Identification association.

In a third aspect, a wireless communication method is provided, including: receiving a first message from a terminal device, the first message being used to request the release of a first RRC connection, or to request handover, or to indicate time division multiplexing Multiplexing TDM mode, wherein the first RRC connection is an RRC connection established with the terminal device, the TDM mode is applied to the first serving cell of the terminal device, and the first message A message sent when the 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; sending a second message to the terminal device, the second message being used to instruct to release the first RRC Connected, or used to indicate handover, or used to respond to the TDM mode.

According to the solution of the embodiment of the present application, the access network device receives the first message and can determine to release the first RRC connection or switch the current serving cell or determine the TMD mode, which reduces the impact of IMD problems and improves the accuracy of data transmission. Specifically, the first access network device can release the first RRC connection to avoid simultaneous signal transmission between the terminal device and the first serving cell and the second serving cell, thereby reducing the impact of the IMD problem; or the first access network device determines the handover The current serving cell has changed the frequency band for signal transmission between the terminal equipment and the first access network device to reduce the impact of IMD problems; or the first access network device determines the TDM mode to reduce the impact of IMD problems and improve data transmission Accuracy.

With reference to the third aspect, in some implementation manners of the third aspect, the first message includes a cause value, and the cause value is used to indicate that the terminal device has an IMD.

According to the solution of the embodiment of the present application, the cause value can assist the first access network device to make a decision. The first access network device may determine that the terminal device has an IMD according to the cause value, 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 according to the cause value.

With reference to the third aspect, in some implementations of the third 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 solution of the embodiment of the present 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 downlink frequency band information of the second serving cell, so that the frequency band of the target serving cell is the same as that of the target serving cell. There is no IMD between the frequency bands of the second serving cell, thereby reducing the impact of the IMD problem.

With reference to the third aspect, in some implementations of the third aspect, the TDM mode is used to indicate that the period of the first uplink transmission is different from the period of the first downlink transmission, wherein the first uplink transmission and the The first downlink transmission corresponds to the first serving cell.

With reference to the third aspect, in some implementations of the third aspect, the period of the second uplink transmission is different from the period of the first uplink transmission indicated by the TDM mode, wherein the first uplink transmission corresponds to all For the first serving cell, 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 the 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 implementation manners 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, the threshold information set including at least one of the following: a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold. Threshold, the threshold information set corresponds to power headroom report PHR related parameters, where the PHR related parameters include at least one of the following: the maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, and the terminal device The additional maximum power fallback A-MPR of the terminal device and the power management maximum power fallback P-MPR of the terminal device, the first threshold corresponds to the maximum transmit power, and the second threshold corresponds to the MPR, so 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; receiving the PHR from the terminal device .

According to the solution of the embodiment of the present application, when the PHR changes, the terminal device can determine whether to trigger the PHR report according to the relationship between the above-mentioned PHR parameters and the threshold, so that the access network device can obtain a more accurate PHR value after the change. Accurately determine whether the resources allocated to the terminal device are appropriate, ensuring the accuracy of data transmission.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the terminal device satisfies a preset condition, and the preset condition includes at least one of the following conditions: the change value of the maximum transmit power is greater than or equal to the first A 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 change value of the MPR and the change value of the A-MPR The sum of 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.

Specifically, the preset condition may be a predefined condition.

In a fifth aspect, a communication device is provided. The communication device is used to execute the method in the first aspect or the second aspect described above. Specifically, the communication device may include a module for executing the method in the first aspect or the second aspect, for example, including a processing module, a sending module, and a receiving module. Exemplarily, the communication device is a communication device, or a chip or other component provided in the communication device. Exemplarily, the communication device is a terminal device. In the following, the communication device is a terminal device as an example.

The processing module is configured to determine that there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell; the sending module is configured to send a first message to the first access network device, the The first message is used to request the release of the first radio resource control RRC connection, or to request handover, or to indicate the time division multiplexing TDM mode, wherein the first RRC connection is connected to the first access network The RRC connection established by the device, the first access network device is the 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 data from The second message of the first access network device, where the second message is used to instruct to release the first RRC connection, or to instruct handover, or 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, and the cause value is used to indicate the presence of IMD.

Optionally, 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.

Alternatively, the processing module is configured to determine that the PHR related parameters of the power headroom report meet a preset condition; the sending module is configured to trigger the PHR to be reported to the first access network device, wherein the PHR related parameters include at least one of the following : The maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power management maximum power fallback P-MPR of the terminal device.

It should be understood that the method in the first aspect may specifically refer to the method in the first aspect and any one of the various implementation manners in the first aspect, and the method in the second aspect may specifically refer to the second aspect and the second aspect. The method in any one of the various implementations in the aspect.

In a sixth aspect, a communication device is provided. The communication device is used to execute the method in the third aspect or the fourth aspect described above. Specifically, the communication device may include a module for executing the method in the third aspect or the fourth aspect, such as a sending module and a receiving module. Exemplarily, the communication device is a communication device, or a chip or other component provided in the communication device. Exemplarily, the communication device is an access network device. In the following, take the communication device as the first access network device as an example.

The receiving module is configured to receive a first message from a terminal device, where the first message is used to request the release of the first RRC connection, or is used to request handover, or is used to indicate the 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 of the terminal device, and the first message indicates that the terminal device is determining the first serving cell of the terminal device. A message sent when there is an IMD between the frequency band and the frequency band of the second serving cell; the sending module is configured to send a second message to the terminal device, and the second message is used to instruct to release the first RRC Connected, or used to indicate handover, or used to respond to the TDM mode.

Optionally, the first message includes a cause value, and the cause value is used to indicate that the terminal device has an IMD.

Alternatively, the sending module is configured to send a threshold information set to a terminal device, the threshold information set includes at least one of the following: a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold, the threshold information The set corresponds to PHR-related parameters, where the PHR-related parameters include at least one of the following: the maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and The power management maximum power fallback P-MPR of the terminal device, the first threshold corresponds to the maximum transmit power, the second threshold corresponds to the MPR, and the third threshold corresponds to the A-MPR Correspondingly, the fourth threshold corresponds to the MPR and the A-MPR, and the fifth threshold corresponds to the P-MPR; the receiving unit is configured to receive the PHR from the terminal device.

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

In a seventh aspect, a communication device is provided. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is a terminal device. The communication device includes: a communication interface for sending and receiving information, or in other words, for communicating with other devices; and a processor, where the processor is coupled with the communication interface. Optionally, the communication device may further include a memory for storing computer executable program code. Alternatively, the communication device may not include a memory, and the memory may be located outside the communication device. Wherein, the program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device is caused to execute the method in the first aspect or the 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, and a codec in the communication device. Or, if the communication device is a chip provided in a communication device, the communication interface may be an input/output interface of the chip, such as input/output pins.

In an eighth aspect, a communication device is provided. Exemplarily, the communication device is a chip provided in a communication device. Exemplarily, the communication device is an access network device. The communication device includes: a communication interface for sending and receiving information, or in other words, for communicating with other devices; and a processor, where the processor is coupled with the communication interface. Optionally, the communication device may further include a memory for storing computer executable program code. Alternatively, the communication device may not include a memory, and the memory may be located outside the communication device. Wherein, the program code stored in the memory includes instructions, and when the processor executes the instructions, the communication device executes the method in the third aspect or the fourth aspect.

In a ninth aspect, a computer program product is provided. The computer program product includes: computer program code, which when the computer program code runs on a computer, causes the computer to execute the method executed by the terminal device in the above aspects.

In a tenth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code runs on a computer, causes the computer to execute the method executed by the access network device in the above aspects .

In an eleventh aspect, a chip system is provided. The chip system includes a processor for implementing the functions of the terminal device in the methods of the above aspects, for example, receiving or processing the data and/or information involved in the above methods. . In a possible design, the chip system further includes a memory, and the memory is used to store program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a twelfth aspect, a chip system is provided. The chip system includes a processor, which is used to implement the functions of the access network device in the methods of the foregoing aspects, for example, to receive or process the data and/or data involved in the foregoing methods. Or information. In a possible design, the chip system further includes a memory, and the memory is used to store program instructions and/or data. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a thirteenth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores a computer program, and when the computer program is executed, the method executed by the terminal device in the above aspects is implemented.

In a fourteenth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. When the computer program is executed, the method executed by the access network device in the above aspects is implemented.

Description of the 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 flowchart of a communication method according to an embodiment of the present application.

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

FIG. 4 is a schematic flowchart of a communication method according to another embodiment of the present application.

FIG. 5 is a schematic flowchart 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 device 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 ways

The technical solution in this application will be described below in conjunction with the accompanying drawings.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, the future fifth generation (5th generation, 5G) system or new radio (NR) or enhanced or evolved system of the fifth generation system, vehicle-to-X V2X, where V2X can include vehicle-to-network (V2N) , Vehicle to Vehicle (V2V), Vehicle to Infrastructure (V2I), Vehicle to Pedestrian (V2P), etc., Long Term Evolution-vehicle, LTE -V), Internet of Vehicles, machine type communication (MTC), Internet of Things (IoT), long term evolution-machine (LTE-M), machine-to-machine ( machine to machine, M2M) etc.

The terminal equipment in the embodiments of the present application may include user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal, terminal, wireless Communication equipment, user agent or user device.

The terminal device may be a device that provides voice/data connectivity to the user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and so on. At present, some examples of terminals are: mobile phones, tablet computers, notebook computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices , Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids (smart) The wireless terminal in the grid), the wireless terminal in the transportation safety, the wireless terminal in the smart city, the wireless terminal in the smart home (smart home), the cellular phone, the cordless phone, the session initiation protocol ( session initiation protocol, SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing connected to wireless modem Equipment, in-vehicle equipment, wearable equipment, terminal equipment in the future 5G network or terminal equipment in the public land mobile network (PLMN) that will evolve in the future, and/or anything used to communicate on a wireless communication system Other suitable devices are not limited in this embodiment of the application.

Among them, wearable devices can also be called wearable smart devices, which are the general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets and smart jewelry for physical sign monitoring.

In addition, in the embodiments of the present application, the terminal device may also be a terminal device in the Internet of Things (IoT) system. IoT is an important part of the development of information technology in the future. Its main technical feature is to pass items through communication technology. Connect with the network to realize the intelligent network of human-machine interconnection and interconnection of things.

In addition, in this application, terminal equipment may also include sensors such as smart printers, train detectors, gas stations, etc. The main functions include collecting data (part of the terminal equipment), receiving control information and downlink signals from access network equipment, and sending electromagnetic waves. , To transmit the uplink signal to the access network equipment.

The access network equipment in the embodiments of this application may be any equipment with wireless transceiver function used to communicate with terminal equipment. The access network equipment may be a global system for mobile communications (GSM) system or The base transceiver station (BTS) in code division multiple access (CDMA), or the base station B (nodeB, NB) in the wideband code division multiple access (WCDMA) system , It can also be an evolved base station B (evolved nodeB, eNB or eNodeB) in an LTE system, a radio controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or a radio network control Radio network controller (RNC), base station controller (BSC), home base station (for example, home evolved nodeB, or home nodeB, HNB), baseband unit (BBU), or the access network Devices can be relay stations, access points, in-vehicle equipment, wearable devices, and access network equipment in the future 5G network or access network equipment in the future evolved PLMN network. It can be an access point in a WLAN. , AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP), or transmission and reception point (transmission and reception point, TRP), etc., can be the new radio system (new radio, NR) system gNB or transmission point (TRP or TP), or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or, it can also be a network node that constitutes a gNB or transmission point, such as a baseband unit ( BBU), or, distributed unit (DU), etc., which are not limited in the embodiment of the present application.

In some deployments, the gNB may include a centralized unit (CU) and a DU. The gNB may also include an active antenna unit (AAU for short). CU implements some functions of gNB, and DU implements some functions of gNB. For example, CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol (PDCP) The function of the layer. The DU is responsible for processing the physical layer protocol and real-time services, and realizes the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and the physical (PHY) layer. AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU+AAU. It can be understood that the access network device may be a device that includes one or more of a CU node, a DU node, and an AAU node. In addition, the CU can be divided into access network equipment in the access network (radio access network, RAN), or the CU can be divided into access network equipment in the core network (core network, CN). This application does not Make a limit.

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

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 memory (also referred to as main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided in accordance with the embodiments of the application. For example, the execution subject of the method provided in this embodiment of the present application may be a terminal device or an access network device, or a functional module in the terminal device or the access network device that can call and execute the program.

In addition, various aspects or features of the embodiments of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques. The term "article" used in the embodiments of this application covers a computer program that can be accessed from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

It should be noted that in this embodiment of the application, multiple application programs can be run at the application layer. In this case, the application program that executes the communication method of the embodiment of this application and is used to control the receiving end device to complete the received data The application program of the corresponding action may be a different application program.

At a given time, the access network device and the terminal device may be a wireless communication sending device and/or a wireless communication receiving device. When sending data, the wireless communication sending device can encode the data for transmission. Specifically, the wireless communication sending device may acquire (for example, generate, receive from other communication devices, or store in a memory, etc.) a certain number of data bits to be sent to the wireless communication receiving device through a channel. Such data bits can be included in a transmission block (or multiple transmission blocks) of data, and the transmission block can be segmented to generate multiple code blocks.

Fig. 1 shows a schematic diagram of a network architecture provided by an embodiment of the present application. The communication system of the embodiment of the present application may include an access network device and multiple terminal devices, and the multiple terminal devices may perform inter-device communication. As shown in Figure 1, the communication system of the embodiment of the present application may include a base station (base station, BS) and user equipment UE1 to UE6. In the communication system, the base station may send information to one or more UEs of UE1 to UE6. . The communication system of the embodiment of the present application may also include user equipment UE4 to UE6. In the communication system, UE5 may send information to one or more UEs of UE4 and UE6. The above network architecture is only for illustration, and is not a limitation to this application.

The RRC state of the UE includes the following types.

RRC connected state: The UE has established an RRC connection with the network and can perform data transmission.

RRC idle state: The UE has not established an RRC connection with the network, and the base station does not have the context of the UE.

RRC inactive state: The UE entered the RRC connected state before, and then the base station released the RRC connection, but the base station and the UE saved the context. If the UE needs to enter the RRC connected state from the RRC deactivated state, it needs to initiate the RRC connection recovery process. 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 save the UE context, which occupies more storage overhead.

The following describes the terminal equipment that can support two SIM cards. Among them, a base station of a SIM can be understood as a communication entity corresponding to the SIM served by the base station. According to the different receiving and sending capabilities of terminal devices, terminal devices that support dual SIM cards can be divided into the following three modes.

Single Rx/Tx terminal equipment, although two SIM cards can be inserted, only one SIM card can be used at the same time, that is, only one SIM card can receive (receive, Rx) and send (transmit) , Tx), another SIM card is unused (unused).

It is a dual Rx/single Tx terminal device. At the same time, the terminal device can receive data from two SIM cards, but can only send data from one SIM card.

It is a dual-receiving and dual-sending (dual Rx/Tx) terminal device: two SIM cards correspond to their respective transceivers. The terminal device can receive and send data from two SIM cards at the same time.

IMD refers to two signals with different frequencies, for example, a signal with a frequency of f1 and a signal with a frequency of f2. A modulated signal can be generated through mutual modulation by a nonlinear amplifier. The frequency of the modulated signal is m*f1±n*f2. The modulated signal is a useless signal. If the frequency of the modulated signal falls within the frequency band of the received signal, it will interfere with the signal reception, resulting in a decrease in receiving sensitivity. For terminal equipment capable of simultaneous signal transmission with two serving cells, such as terminal equipment that supports dual card mode, if the frequency band used by two SIM cards has an IMD problem, then when the terminal equipment sends data from two SIM cards at the same time , The two uplink signals will generate a modulated signal. The frequency of the modulated signal falls within the frequency band used by the terminal device to receive data from one of the SIM cards, which will cause interference to the terminal receiving the data from the SIM card, which will cause data transmission failure. accurate.

The power headroom report (PHR) is the difference between the maximum transmit power that the UE provides to the access network equipment and the estimated power required for uplink transmission. The access network device can determine whether the resources allocated to the UE are appropriate according to the difference. PHR includes three types: 1) Type 1: The difference between the maximum transmit power of the UE and the estimated power required for physical uplink shared channel (PUSCH) transmission; 2) Type 2: UE’s The difference between the maximum transmit power and the estimated power required for PUSCH and physical uplink control channel (PUCCH) transmission; 3) Type 3: UE’s maximum transmit power and estimated channel sounding reference signal (sounding reference) signal, SRS) The difference in power required for transmission. The time triggering methods of PHR mainly include: (1) PHR prohibition timer (phr-ProhibitTimer) has timed out or has timed out, and the change value of path loss exceeds a certain threshold; (2) PHR period timer (phr-PeriodicTimer) has timed out (3) The upper layer configures or reconfigures the PHR parameters (for example, the RRC layer reconfigures the timer value); (4) A secondary cell with uplink configuration is activated; (5) Add a secondary base station; (6) phr -The ProhibitTimer has timed out or has timed out, and the MAC layer has obtained a new uplink transmission resource. Taking the type 1 PHR as an example, the PHR is determined by the maximum transmit power of the UE on the current subcarrier and the power required for uplink shared channel transmission estimated by the UE. 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 (power management maximum power reduction, P). -MPR). MPR and A-MPR are to ensure that the radio frequency power has no effect on the electromagnetic environment, while relaxing the maximum transmission power. P-MPR can be used to meet electromagnetic energy requirements and deal with the undesired sensitivity drop that is caused when signals are sent to multiple access network devices at the same time.

For terminal equipment capable of simultaneous signal transmission with two serving cells, such as terminal equipment supporting dual card mode, when the terminal equipment establishes an RRC connection with two access network equipment, MPR, A-MPR or P-MPR The maximum transmit power may change, which may cause the PHR value to change. At this time, if the above-mentioned PHR reporting trigger conditions are not met, the PHR reporting will not be triggered, resulting in the PHR obtained by the access network equipment no longer Accuracy, which in turn affects the accuracy of data transmission.

The wireless communication method in the embodiment of the present application will be described below with respect to the IMD problem and the PHR reporting problem of the terminal device respectively.

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 there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell.

The presence 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 modulated signal generated when the first uplink signal and the second uplink signal of the terminal device are simultaneously transmitted falls on the first downlink signal In the frequency band of or in the frequency band of the second downlink signal, interfere with the reception of the first downlink signal or interfere with the reception of the second downlink signal. Wherein, the first uplink signal and the first downlink signal correspond to the first serving cell, and the second uplink signal and the second downlink signal correspond to the 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 an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell, and the terminal device can determine the modulation signal generated when the first uplink signal and the second uplink signal are simultaneously transmitted. The frequency falls within the frequency band of the first downlink signal or falls within the frequency band of the second downlink signal.

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

It should be noted that, in the embodiment of the present application, the first identifier and the second identifier may refer to the identifiers allocated by the subscriber identification module (SIM) card 1 and the SIM card 2 of the terminal device by the core network. For example, a temporary mobile subscriber identity (TMSI) or a 5G network temporary mobile subscriber identity (5G-TMSI), or an international mobile subscriber identity (IMSI). The first identifier and the second identifier may also refer to the identifiers allocated by the access network to the SIM card 1 and the SIM card 2 of the terminal device, such as a cell radio network temporary identifier (C-RNTI). For a terminal device that includes two identities, it can be regarded as two communication entities to the network side.

The SIM card can be understood as the key for the terminal device to access the mobile network. For ease 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 can be an identification card for a user of a global system for mobile communications (GSM) digital mobile phone, which is used to store the user's identification code and key, and supports the authentication of the user by the GSM system; and For example, the SIM card can also be a universal subscriber identity module (USIM) or an upgraded SIM card; for another example, the SIM card can also be a universal integrated circuit card (UICC) or embedded SIM card (embedded-SIM, eSIM) or soft SIM card and other forms that can identify the user's identity. The embodiments of this application are described with a SIM card, which does not constitute a limitation to this application.

For example, the first identifier corresponds to SIM card 1, and the second identifier corresponds to SIM card 2. The above-mentioned first uplink signal and first downlink signal can be understood as the transmission between the terminal device and the first serving cell through SIM card 1 Signal, the above-mentioned second uplink signal can be understood as a signal transmitted between the terminal equipment through the SIM card 2 and the second serving cell.

In the embodiments of the present application, only a terminal device that supports dual SIM cards is used as an example for description, and the communication method in the embodiment of the present application is also applicable to a terminal device that supports more than two SIM cards.

It should be noted that the communication method in the embodiment of the present application is also applicable to terminal devices that only support one SIM card. That is to say, the communication method in the embodiment of the present application is applicable to terminal equipment that can simultaneously perform 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 the embodiment of this application, the first access network device refers to the access network device to which the first serving cell of the terminal device belongs, wherein the terminal device establishes a first RRC connection with the first access network device, when When the terminal device is in the RRC idle state or the RRC deactivated state, it still camps on the serving cell of the first access network device.

The second access network device refers to the access network device to which the second serving cell of the terminal device belongs, where the terminal device establishes a second RRC connection with the second access network device, and when the terminal device is in RRC In the idle state or the RRC deactivated state, it still resides in the serving cell of the second access network device.

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 established the first RRC connection with the first access network device, it needs to establish or restore the second RRC connection with the second access network, and the terminal device determines the frequency band of the first serving cell and the second RRC connection. There is an IMD between the frequency bands of the serving cell, and the terminal device may perform step S220.

In the embodiments of this application, the "first RRC connection" refers to the RRC connection established between the terminal device and the first access network device, and the "second RRC connection" refers to the RRC connection established between the terminal device and the second access network device. connection.

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 restore a second RRC connection with the second access network, and 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, The terminal device may perform step S220. That is, in this case, if the terminal device has established the first RRC connection with the first access network device, but the current terminal device does not send the first uplink signal, the terminal device may not perform step S220.

Alternatively, when the terminal device has established a first RRC connection with the first access network device, it needs to send a second uplink signal, and 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 , The terminal device may execute 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 sending the first uplink signal and needs to send the second uplink signal, and 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, the terminal device may perform step S220. That is, in this case, if the terminal device has established the first RRC connection with the first access network device, but the current terminal device does not send the first uplink signal, the terminal device may not perform step S220.

S220: The terminal device sends a first message to the first access network device, where the first message is used to request to release the first RRC connection, or to request handover, or to indicate time division multiplexing. In the TDM mode, the TDM mode is applied to the first serving cell. The first message is used to request to release the first RRC connection, and may also include a request to suspend the first RRC connection. In the embodiments of the present application, "handover" refers to the handover of the serving cell, from the first serving cell to the target serving cell.

As an example and not a limitation, the first message may be associated with the first identification of the terminal device. For example, the first identifier corresponds to the SIM card 1, and the terminal device can send the 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 rejection message. The first access network device may reject the request to release the first RRC connection or handover or reject the TDM mode.

According to the solution of the embodiment of the present application, the terminal device can send a first message to the access network device after determining that IMD exists, so that the first access network device can release the first RRC connection or switch the current serving cell or determine the TMD mode to reduce IMD The impact of the problem.

In the following, the method 200 is divided into two cases (case 1 and case 2) by taking the association of the first serving cell with the first identity of the terminal device, and the association of the second serving cell with the second identity of the terminal device as an example. Case 1 and Case 2 correspond to the following method 300 and method 400, respectively.

Situation 1

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

S310: The terminal device determines that there is an intermodulation distortion IMD 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 the first identity of the terminal device, and the second serving cell is associated with the second identity of the terminal device. For example, the first identifier corresponds to SIM card 1, and the second identifier corresponds to SIM card 2. The first serving cell can be understood as the serving cell corresponding to SIM card 1, and the second serving cell can be understood as the serving cell corresponding to 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 of the first RRC connection or to request handover.

The first message may be associated with the first identification of the terminal device. For example, the first identifier corresponds to the SIM card 1, and the terminal device can send the first message to the first access network device through the SIM card 1. The first RRC connection may be an RRC connection established between the terminal device and 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 the current service transmission status, etc. Alternatively, the first access network device may also refuse the request of the first message, that is, the first access network device may refuse to release the first RRC connection or refuse to handover.

Further, the first message includes a cause value, and the cause value is used to indicate the presence of IMD.

Specifically, the cause value field can be used to indicate whether the terminal device has an IMD. That is to say, after the terminal device determines that there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell, it can send the cause value to the first access network device, and only notify the first access network device of this The terminal device has an IMD, and there is no need to send information such as the identifier (ID) of the second serving cell to the first access network device.

This can assist the first access network device to make decisions. The first access network device may determine that the terminal device has an IMD 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 according to 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 uplink frequency band information and/or downlink frequency band information may be sent without sending information such as the 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 downlink frequency band information of the second serving cell, so that the frequency band of the target serving cell is the same as the frequency band of the second serving cell There is no IMD in between, reducing the impact of IMD problems.

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

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

As an example and not a 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, and the redirection indication information is used to indicate target serving cell information of the terminal device. The terminal device can release the first RRC connection according to the second message, perform a cell search, and try to camp on the designated target serving cell.

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

According to the solution of the embodiment of the present application, the terminal device can send a first message to the access network device after determining that IMD exists, so that the first access network device releases the first RRC connection and avoids simultaneous communication with the first serving cell and the second serving cell. The cell transmits signals, 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, which changes the frequency band for signal transmission between the terminal device and the first access network device, reducing IMD The impact of the problem.

Situation 2

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

S410: Determine that there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell.

Specifically, it is determined that there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell, which can be divided into the following two scenarios.

scene 1:

The terminal device works in a frequency division duplexing (FDD) mode in both the first serving cell and the second serving cell.

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, which can determine for the terminal device that the frequency of the modulated signal generated when the first uplink signal and the second uplink signal are simultaneously transmitted falls below the first Within the frequency band of the downstream signal or within the frequency band of the second downstream signal. Wherein, the first uplink signal and the first downlink signal correspond to the first serving cell, and the second uplink signal and the second downlink signal correspond to the second serving cell.

Scene 2:

The terminal device works in the FDD mode in the first serving cell, and works in the time division duplexing (TDD) mode in the second serving cell.

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, which can determine for the terminal device that the frequency of the modulated signal generated when the first uplink signal and the second uplink signal are simultaneously transmitted falls below the first In the frequency band of the line signal. The first uplink signal and the first downlink signal correspond to the first serving cell, and the second uplink signal corresponds to the second serving cell.

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

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, which can determine for the terminal device that the frequency of the modulated signal generated when the first uplink signal and the second uplink signal are simultaneously transmitted falls on the second downlink In the frequency band of the signal. Wherein, the first uplink signal corresponds to the first serving cell, and the second uplink signal and the second downlink signal correspond to the second serving cell.

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

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

Specifically, the TDM mode will be described for the above scenario 1 and scenario 2 respectively.

scene 1:

Exemplarily, the terminal device determines that the frequency of the modulated signal generated when the first uplink signal and the second uplink signal are simultaneously transmitted 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 downlink service mode of the first serving cell. For example, the terminal device is mainly for upstream services, and it can be determined that the time of uplink transmission exceeds the time of downlink transmission. Specifically, the TDM mode may be the ratio of uplink transmission and downlink transmission in a period of time. For example, the TDM mode can indicate how many subframes are used for downlink transmission and how many subframes are used for uplink transmission in a frame; or, the TDM mode can also indicate how many symbols are used for downlink transmission and how many symbols are used for downlink transmission in a subframe. Uplink transmission; or TDM mode can also include the above two manifestations. The manifestation of the specific TDM mode is not restricted in this case.

The TDM mode is used to indicate that the time period of the first uplink transmission is different from the time period of the first downlink transmission, wherein the first uplink transmission and the first downlink transmission correspond to the first serving cell.

Alternatively, the TDM mode may be used to indicate that the first uplink transmission is transmitted in the first time period and that the first downlink transmission is transmitted in the second time period, wherein the first uplink transmission and the first downlink transmission Corresponding to the first serving cell.

In this way, it can be ensured that the uplink signal and the downlink signal are not transmitted at the same time between the terminal equipment and the first serving cell, and the impact of the IMD problem can be reduced.

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

The TDM mode is used to indicate that the time period of the second uplink transmission is different from the time period of the second downlink transmission, wherein the first uplink transmission and the first downlink transmission correspond to the second serving cell.

Alternatively, the TDM mode may be used to indicate that the second uplink transmission is transmitted in the first time period and that the first downlink transmission is transmitted in the second time period, wherein the second uplink transmission corresponds to the second downlink transmission In the second serving cell.

That is to say, in this case, S420 can also be understood as that the terminal device sends a first message to the second access network device, and the first message is used to instruct the terminal device to perform uplink transmission and transmission with the second serving cell. The TDM mode of downlink transmission can ensure that the terminal equipment and the second serving cell do not transmit uplink signals and downlink signals at the same time, reducing the impact of IMD problems.

Scene 2:

Exemplarily, the terminal device works in the FDD mode in the first serving cell, and works in the TDD mode in the second serving cell.

As an example and not a limitation, 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.

Specifically, the TDM mode may be used to indicate that the period of the first uplink transmission is different from the period of the first downlink transmission, wherein the first uplink transmission and the first downlink transmission correspond to the first service Community.

As an example and not a limitation, the terminal device can determine the TDM mode for uplink transmission and downlink transmission with the first serving cell according to the ratio of uplink transmission and downlink transmission of the second serving cell to ensure that the uplink transmission of the first serving cell is in the time domain. The above does not conflict with the uplink transmission of the second serving cell.

Specifically, the second uplink transmission period is different from the first uplink transmission period indicated by the TDM mode, or the second uplink transmission period is different from the first downlink transmission period 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 mode is used to indicate that the first uplink transmission or the first downlink transmission is transmitted in the third period, and the second uplink transmission is transmitted in the fourth period, wherein the first uplink transmission and the first downlink transmission are transmitted in the fourth period. The transmission corresponds to the first serving cell, and the second uplink transmission corresponds to the second serving cell.

This can ensure that the terminal device does not send the first uplink signal and the second uplink signal at the same time or does not send the second uplink signal and receive the first downlink signal at the same time, reducing the impact of the IMD problem.

S430: The first access network device sends a second message to the terminal device, where the second message is used to respond to the TDM mode.

The response to the TDM mode may be to agree to the TDM mode, or to reject the TDM mode.

According to the solution of the embodiment of the present application, the terminal device can send a first message to the access network device after determining the presence of IMD to notify the first access network device of the TDM mode, reducing the impact of IMD problems and improving the accuracy of data transmission .

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

S510: The first access network device sends a PHR related parameter threshold information set to the terminal device.

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

The threshold information sets at least one of the following: a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold.

The PHR related parameters may include at least one of the following: the maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power management maximum power of the terminal device Roll back P-MPR.

As mentioned earlier, PHR is the difference between the maximum transmit power of the terminal device and the estimated power required for uplink transmission. According to the agreement, the maximum transmit power P _{CMAX, f, c of the} terminal equipment on the carrier f is determined by the following formula.

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} }

Among them, the maximum transmission power P _{CMAX, f, c} represents the maximum transmission power configured by the terminal device according to certain constraints on the carrier f of the 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 the minimum value of _{P CMAX,f,c} _{, P CMAX_H,f,c} represents the maximum value of _{P CMAX,f,c} _{, P EMAX,c} represents the maximum transmit power indicated by the network, P _PowerClass represents the maximum transmit power supported by the terminal device. MPR _c represents the maximum power backoff value for serving cell c, and A-MPR _c represents the additional maximum power backoff value for serving cell c. MPR _c and A-MPR _c are aimed at the relaxation of the maximum transmission power in order to ensure that the radio frequency power has no effect on the electromagnetic environment for the serving cell c. P-MPR _c is the maximum power backoff value set for the serving cell c in order to satisfy the power management function. ΔT _C,c in some frequency bands (for example, n1-n5, n7-8, n12, n14, n20, n25, n28, n30, n34, n38-41, n48, n50-51, n65-66, n70-71, The value of n74, n77-84, n86) is 1.5dB, the value of other frequency bands is 0dB, the value of ΔP _PowerClass can be 3dB or 0dB, and ΔT _IB,c represents the extra tolerance for serving cell c. ΔT _RxSRS is a parameter for SRS transmission. For band n79, the _{value of ΔT RxSRS} can be 4.5dB. For frequency bands with the highest frequency lower than the lowest frequency of band n79 in other frequency bands, the _{value of ΔT RxSRS} can be 3dB.

It should be understood that the change of P-MPR is to meet the requirements of electromagnetic regulations or specific absorption rate. Therefore, any maximum power fallback set to meet electromagnetic regulations or RF energy absorption rate can be understood as P -MPR.

The first threshold corresponds to the maximum transmit power P _{CMAX, f, c} , the second threshold corresponds to MPR, the third threshold corresponds to A-MPR, the fourth threshold corresponds to MPR and A-MPR, and the fifth threshold corresponds to P-MPR .

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

S520: The terminal device judges that the PHR related parameters meet preset conditions.

Before S520, the method 500 may further include step S521, establishing or restoring 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.

As an example and not a limitation, the first access network device may be associated with the first identification of the terminal device, and the second access network device may be associated with the second identification of the terminal device. For example, the first identifier corresponds to SIM card 1, and the second identifier corresponds to SIM card 2. The terminal device can establish a first RRC connection with the first access network device through SIM card 1, and establish a first RRC connection with the second access network device through SIM card 2. The second RRC connection.

It should be noted that the communication method in the embodiment of the present application is also applicable to terminal devices that only support one SIM card. That is to say, the communication method in the embodiment of the present application is applicable to a terminal device that can simultaneously perform signal transmission with at least two access network devices. For example, a terminal device capable of dual connection (DC) with a first access network device and a second access network device.

Further, the preset condition includes at least one of the following conditions:

The change 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 a fourth threshold;

The change value of the P-MPR is greater than or equal to the fifth threshold.

The preset condition may be a predefined condition.

Exemplarily, in a case where the terminal device has established the first RRC connection with the first access network device, the terminal device establishes or restores the second RRC connection. The above change value can be understood as the related parameter value before the terminal device establishes or restores the second RRC connection and the related parameter after the second RRC connection is established or restored when the first access network device establishes the first RRC connection The difference between the values.

Further, when the terminal device is sending the first uplink signal, the terminal device establishes or restores the second RRC connection with the second access network device. The above-mentioned change value may be the difference between the related parameter value before the terminal device establishes or restores the second RRC connection and the related parameter value after the second RRC connection is established or restored when the terminal device is sending the first uplink signal. .

Alternatively, in the case that the terminal device has established the first RRC connection with the first access network device, the terminal device sends the second uplink signal. In this case, the terminal device has already established a second RRC connection with the second access network device. The above-mentioned change value can be understood as that in the case that the terminal device has established a first RRC connection with the first access network device and a second RRC connection has been established with the second access network device, the terminal device sends a second uplink signal The difference between the previous relevant parameter value and the relevant parameter value when the second uplink signal is sent.

Further, when the terminal device is sending the first uplink signal, the terminal device sends 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-mentioned change value can be understood as the situation that the terminal device is sending the first uplink signal and the terminal device has established a second RRC connection with the second access network device, the relevant parameter value and the sending value before the terminal device sends the second uplink signal The difference between the relevant parameter values for the second uplink signal.

Wherein, the above-mentioned first uplink signal corresponds to a first serving cell, and the above-mentioned second uplink signal corresponds to a second serving cell.

One or more of the first threshold to the fifth threshold may be a value specified by an agreement.

S530: Trigger the PHR to report to the first access network device.

Further, in the case that the terminal device has established a first RRC connection with the first access network device, and has established a second RRC connection with the second access network device, if in S520, the terminal device determines PHR related parameters Satisfying the preset condition can trigger the PHR to report to the first access network device and the second access network device.

Exemplarily, when the terminal device has established a first RRC connection with the first access network device, the terminal device sends the second uplink signal. In this case, the terminal device has already established a second RRC connection with the second access network device. When the terminal device determines that the PHR related parameters meet the preset conditions, it can trigger the PHR to report to the first access network device and the second access network device.

Further, when the terminal device is sending the first uplink signal, the terminal device sends 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 determines that the PHR related parameters meet the preset conditions, it can trigger the PHR to report to the first access network device and the second access network device.

According to the solution of the embodiment of the present application, when the PHR changes, such as the PHR change caused by the terminal device establishing two RRC connections, the PHR report can be triggered according to the above PHR report trigger condition, and the access network device is notified of the more accurate PHR after the change. Value, so that the access network device can accurately determine whether the resources allocated to the terminal device are appropriate, which ensures the accuracy of data transmission.

FIG. 6 shows a schematic diagram of a wireless communication apparatus 600 according to an embodiment of the present application. Wherein, the apparatus 600 may be a terminal device, or a chip or circuit, for example, a chip or circuit that can be provided in a terminal device.

The device 600 may include a processing unit 610 (that is, 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 that the apparatus 600 implements the steps performed by the terminal device in the foregoing method.

Further, the device 600 may further include an input port 630 and an output port 640. Further, the processing unit 610, the storage unit 620, the input port 630, and the output port 640 can communicate with each other through internal connection paths to transfer control and/or data signals. The storage unit 620 is used to store a computer program, and the processing unit 610 can be used to call and run the calculation program from the storage unit 620 to control the input port 630 to receive signals and the output port 640 to send signals to complete the above method. Steps for terminal equipment. The storage unit 620 may be integrated in the processing unit 610, or may be provided separately from the processing unit 610.

Optionally, if the apparatus 600 is a communication device (for example, a terminal device), the input port 630 is a receiver, and the output port 640 is a transmitter. Among them, the receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.

Optionally, 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 transceiver. The processing unit 610 may be implemented by a dedicated processing chip, a processing circuit, a processing unit, or a general-purpose chip.

As another implementation manner, a general-purpose computer may be considered to implement the communication device provided in the embodiments of the present application. The program code that realizes the functions of the processing unit 610, the input port 630 and the output port 640 is stored in the storage unit 620. The general processing unit implements the functions of the processing unit 610, the input port 630 and the output port 640 by executing the code in the storage unit 620. .

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

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 mode is used to indicate that the period of the first uplink transmission is different from the period of the first downlink transmission, wherein the first uplink transmission and the first downlink transmission correspond to the first service Community.

Optionally, the period of the second uplink transmission is different from the period of the first uplink transmission indicated by the TDM mode, wherein 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 identity of the terminal device.

In another implementation manner, the processing unit 610 is configured to determine that the PHR related parameters of the power headroom report meet preset conditions; and the processing unit 610 is also configured to control the output port 640 to trigger PHR reporting to the first access network device, where: The PHR related parameters include at least one of the following: the maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power of the terminal device Manage the maximum power fallback P-MPR.

Optionally, the preset condition includes at least one of the following conditions: the change value of the maximum transmit power is greater than or equal to a first threshold; the change value of the MPR is greater than or equal to a second threshold; the change of the A-MPR The value 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.

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, and/or from the first access network device Or the fifth threshold.

Optionally, before the determining the power headroom report PHR related parameters meet preset conditions, the method further includes: establishing or restoring a first RRC connection with the first access network device; and with the second access network device Establish or restore the second RRC connection.

Optionally, 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.

For the concepts related to the technical solutions provided in the embodiments of the present application and related concepts, explanations, detailed descriptions, and other steps involved in the device 600, please refer to the descriptions of these contents in the foregoing method or other embodiments, which are not repeated here.

Among them, the functions and actions of the modules or units in the apparatus 600 listed above are only exemplary descriptions. The apparatus 600 is configured in or itself is a terminal device, and each module or unit in the apparatus 600 can be used to execute the terminal device in the above method. In order to avoid repetitive descriptions of the executed actions or processing procedures, detailed descriptions thereof are omitted.

FIG. 7 is a schematic diagram of a wireless communication apparatus 700 provided by an embodiment of the application.

Wherein, the apparatus 700 may be an access network device (for example, a first access network device or a second access network device), or a chip or circuit, such as a chip or circuit that can be provided in an access network device.

The apparatus 700 may include a processing unit 710 (that is, 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 that the apparatus 700 implements the steps performed by the access network device (for example, the first access network device or the second access network device) in the foregoing method.

Further, the device 700 may further include an input port 730 and an output port 740. Further, the processing unit 710, the storage unit 720, the input port 730, and the output port 740 can communicate with each other through internal connection paths to transfer control and/or data signals. The storage unit 720 is used to store a computer program, and the processing unit 710 can be used to call and run the calculation program from the storage unit 720 to control the input port 730 to receive signals and the output port 740 to send signals to complete the above method. Steps to access network equipment. The storage unit 720 may be integrated in the processing unit 710, or may be provided separately from the processing unit 710.

Optionally, if the apparatus 700 is a communication device (for example, an access network device), the input port 730 is a receiver, and the output port 740 is a transmitter. Among them, the receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers.

Optionally, 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 manner, the functions of the input port 730 and the output port 740 may be implemented by a transceiver circuit or a dedicated chip for transceiver. The processing unit 710 may be implemented by a dedicated processing chip, a processing circuit, a processing unit, or a general-purpose chip.

As another implementation manner, a general-purpose computer may be considered to implement the communication device (for example, an access network device) provided in the embodiment of the present application. The program codes that realize the functions of the processing unit 710, the input port 730, and the output port 740 are stored in the storage unit 720. The general processing unit implements the functions of the processing unit 710, the input port 730 and the output port 740 by executing the code in the storage unit 720. .

In an implementation manner, the processing unit 710 is configured to control the input port 730 to receive a first message from the terminal device, and the first message is used to request the release of the first RRC connection, or to request handover, or to indicate the time division. The multiplexed TDM mode, wherein 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 indicates that the terminal device is in It is determined that the message sent when there is an IMD between the frequency band of the first serving cell and the frequency band of the 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 instruct to release the first RRC connection, or to instruct handover, or to respond to the TDM mode .

In another implementation manner, the processing unit 710 is configured to control the output port 740 to send a threshold information set to the terminal device. The threshold information set includes at least one of the following: a first threshold, a second threshold, a third threshold, and a fourth threshold. And the fifth threshold, the threshold information set corresponds to the power headroom report PHR related parameters, where the PHR related parameters include at least one of the following: the maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, and the The additional maximum power fallback A-MPR of the terminal device and the power management maximum power fallback P-MPR of the terminal device, the first threshold corresponds to the maximum transmit power, and the second threshold corresponds to the MPR Correspondingly, 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 processing unit 710 is further configured to control the input port 730 to receive the PHR from the terminal device.

The terminal device satisfies a preset condition, and the preset condition includes at least one of the following conditions:

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

Wherein, the functions and actions of each module or unit in the apparatus 700 listed above are only exemplary descriptions. When the apparatus 700 is configured in or is an access network device, each module or unit in the apparatus 700 can be used to execute the foregoing Each action or processing procedure performed by the access network device in the method is omitted here in order to avoid redundant description.

For the concepts related to the technical solutions provided in the embodiments of the present application involved in the device 700, for explanations, detailed descriptions, and other steps, please refer to the descriptions of these contents in the foregoing method or other embodiments, which will not be repeated here.

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 can execute each step executed by the terminal device in the foregoing method embodiment.

In an implementation manner, it includes: a transceiver unit 810 and a processing unit 820. The transceiver unit 810 may also be two units, such as a sending unit and a receiving unit.

In an implementation manner, the processing unit 820 may be used to determine that there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell; the processing unit 820 may also be used to control the transceiver The unit 810 sends a first message to the first access network device, where the first message is used to request the release of the first radio resource control RRC connection, or is used to request handover, or is used to indicate the 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 also be used to control the transceiver unit 810 to receive a second message from the first access network device, and the second message is used to instruct to release the first The RRC connection is either used to indicate handover or used to respond to the TDM mode.

In another implementation manner, the processing unit 820 may be used to determine that the PHR related parameters of the power headroom report meet preset conditions; and the transceiver unit 810 may also be used to trigger the PHR to be reported to the first access network device, Wherein, the PHR related parameters include at least one of the following: the maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power of the terminal device Manage the maximum power fallback P-MPR.

FIG. 9 shows a schematic diagram of a wireless communication device 900 according to an embodiment of the present application. It should be understood that the apparatus 900 can execute each step performed by the first access network device or the second access network device in the foregoing method embodiment.

The device 900 includes a transceiver unit 910 and a processing unit 920. The transceiver unit may also be two units, such as a sending unit and a receiving unit.

In an implementation manner, 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 the release of the first RRC connection, or is used to request handover, Or used to indicate a time division multiplexing TDM mode, where the first RRC connection is an RRC connection established with the terminal device, and the TDM mode is applied to the first serving cell, and the first RRC connection of the terminal device There is an IMD between the frequency band of a serving cell and the frequency band of a second serving cell; the processing unit 920 may also be used to control the transceiver unit 910 to send a second message to the terminal device, where the second message is used to indicate The first RRC connection is released, or used to indicate handover, or used 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 the terminal device, and the threshold information set includes at least one of the following: a first threshold, a second threshold, and a third threshold. Thresholds, fourth thresholds and fifth thresholds, the threshold information set corresponds to PHR related parameters of the power headroom report, wherein the PHR related parameters include at least one of the following: the maximum transmit power of the terminal device, the maximum power of the terminal device Fallback MPR, additional maximum power fallback A-MPR of the terminal device, and power management maximum power fallback P-MPR of the terminal device, the first threshold corresponds to the maximum transmit power, and the second The 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 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 device 1000 according to an embodiment of the present application. It should be understood that the communication device may be used to perform each step performed by the terminal device in the foregoing method example, and may also be used to perform each step performed by the access network device in the foregoing method embodiment. In order to avoid repetition, it will not be detailed here. The communication device 1000 includes:

The memory 1010 is used to store programs; the memory 1010 is an optional module.

The communication interface 1020 is used to communicate with other devices;

The processor 1030 is configured to execute programs in the memory 1010.

It should be understood that the communication device 1000 shown in FIG. 10 may be a chip or a circuit. For example, it can be a chip or circuit set in a terminal device, or a chip or circuit set in an access network device. The aforementioned communication interface 1020 may also be a transceiver. The transceiver includes a receiver and a transmitter. Further, the communication device 1000 may also include a bus system.

The processor 1030, the memory 1010, the receiver and the transmitter are connected by a bus system, and the processor 1030 is used to execute the instructions stored in the memory 1010 to control the receiver to receive signals and control the transmitter to send signals to complete the communication of this application. The step of terminal equipment or access network equipment in the method. Among them, the receiver and the transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively referred to as transceivers. The memory 1010 may be integrated in the processor 1030, or may be provided separately from the processor 1030.

As an implementation manner, the functions of the receiver and transmitter may be implemented by a transceiver circuit or a dedicated transceiver chip. The processor 1030 may be implemented by a dedicated processing chip, a processing circuit, a 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 foregoing 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 used to transmit an uplink signal, and the uplink signal is transmitted to the access network device described in the foregoing embodiment via an antenna. On the downlink, the antenna receives the downlink signal transmitted by the access network device in the foregoing embodiment. The receiver 1102 is used to receive the downlink signal received from the antenna. In the modem processor 1105, the encoder 1106 receives service data and signaling messages to be sent on the uplink, and processes the service data and signaling messages. The modulator 1107 further processes (for example, symbol mapping and modulation) the encoded service data and signaling messages and provides output samples. The demodulator 1109 processes (e.g., demodulates) the input samples and provides symbol estimates. The decoder 1108 processes (e.g., decodes) the symbol estimation and provides decoded data and signaling messages sent to the terminal device. The encoder 1106, the modulator 1107, the demodulator 1109, and the decoder 1108 can be implemented by a synthesized modem processor 1105. These units are processed according to the wireless access technology adopted by the wireless access network.

The controller/processor 1103 controls and manages the actions of the terminal device, and is used to execute the processing performed by the terminal device in the foregoing embodiment. For example, it is used to control the terminal device to receive the second message from the first access network device and release the first RRC connection according to the second message and/or other processes of the technology described in this application. As an example, the controller/processor 1103 is used to support the terminal device to execute the processes S210 and S230 in FIG. 2.

A person of ordinary skill in the art may realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or an access network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only Memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A wireless communication method, characterized by comprising:

Determine that there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell;

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

Receiving a second message from the first access network device, where the second message is used to instruct to release the first RRC connection, or to instruct handover, or to respond to the TDM mode.
The wireless communication method according to claim 1, wherein the first message includes a cause value, and the cause value is used to indicate the presence of IMD.
The wireless communication method according to claim 1 or 2, wherein 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.
The wireless communication method according to any one of claims 1 to 3, wherein the TDM mode is used to indicate that the first uplink transmission period is different from the first downlink transmission period, wherein the first The uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communication method according to any one of claims 1 to 3, wherein the time period of the second uplink transmission is different from the time period of the first uplink transmission indicated by the TDM mode, wherein the first uplink transmission Corresponding to the first serving cell, the second uplink transmission corresponds to the second serving cell.
The wireless communication method according to any one 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. Identify the association.
8. The wireless communication method according to claim 6, wherein the first message is associated with a first identity of the terminal device.
A wireless communication method, characterized by comprising:

Determine that the PHR related parameters of the power headroom report meet the preset conditions;

Trigger PHR to report to the first access network device, where the PHR related parameters include at least one of the following:

The maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power management maximum power fallback P-MPR of the terminal device.
The wireless communication method according to claim 8, wherein the preset condition includes at least one of the following conditions:

The change 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 a fourth threshold;

The change value of the P-MPR is greater than or equal to the fifth threshold.
The wireless communication method according to 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 fifth threshold from the first access network device.
The wireless communication method according to any one of claims 8 to 10, characterized in that, before the determining that the PHR related parameters of the power headroom report satisfy a preset condition, the method further comprises:

Establishing or resuming a first radio resource control RRC connection with the first access network device;

Establish or restore a second RRC connection with the second access network device.
The wireless communication method according to claim 11, 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. Identify the association.
A wireless communication method, characterized by comprising:

Receive a first message from a terminal device, where the first message is used to request the release of the first radio resource control RRC connection, or is used to request handover, or is used to indicate the time division multiplexing TDM mode, wherein the first The RRC connection is an RRC connection established with the terminal device. The TDM mode is applied to the first serving cell of the terminal device. The first message indicates that the terminal device determines the frequency band of the first serving cell and the second serving cell. Message sent when there is IMD between the frequency bands of the serving cell;

Send a second message to the terminal device, where the second message is used to instruct to release the first RRC connection, or to instruct handover, or to respond to the TDM mode.
The wireless communication method according to claim 13, wherein the first message includes a cause value, and the cause value is used to indicate that the terminal device has an intermodulation distortion (IMD).
The wireless communication method according to claim 13 or 14, wherein 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.
The wireless communication method according to any one of claims 13 to 15, wherein the TDM mode is used to indicate that the first uplink transmission period is different from the first downlink transmission period, wherein the first The uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communication method according to any one of claims 13 to 15, wherein the time period of the second uplink transmission is different from the time period of the first uplink transmission indicated by the TDM mode, wherein the first uplink transmission Corresponding to the first serving cell, the second uplink transmission corresponds to the second serving cell.
The wireless communication method according to any one of claims 13 to 17, wherein the first serving cell is associated with a first identity of the terminal device, and the second serving cell is associated with a first identity of the terminal device. The second identification association.
The wireless communication method according to claim 18, wherein the first message is associated with a first identification of the terminal device.
A wireless communication method, characterized by comprising:

Send a threshold information set to the terminal device, where the threshold information set includes at least one of the following:

The first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold,

The threshold information set corresponds to a power headroom report PHR related parameter, where the PHR related parameter includes at least one of the following:

The maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power management maximum power fallback P-MPR of the terminal device,

The first threshold corresponds to the maximum transmit power, the second threshold corresponds to the MPR, the third threshold corresponds to the A-MPR, and the fourth threshold corresponds to the MPR and the A-MPR. -MPR corresponds, and the fifth threshold corresponds to the P-MPR;

Receive the PHR from the terminal device.
The wireless communication method according to claim 20, wherein the terminal device satisfies a preset condition, and the preset condition includes at least one of the following conditions:

The change 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.
A wireless communication device is characterized by comprising:

A processing unit configured to determine that there is an intermodulation distortion IMD between the frequency band of the first serving cell and the frequency band of the second serving cell;

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

A receiving unit, the receiving unit is configured to receive a second message from the first access network device, where the second message is used to instruct to release the first RRC connection, or to instruct handover, or to respond The TDM mode.
The wireless communication device of claim 22, wherein the first message includes a cause value, and the cause value is used to indicate the presence of IMD.
The wireless communication device according to claim 22 or 23, wherein 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.
The wireless communication device according to any one of claims 22 to 24, wherein the TDM mode is used to indicate that the first uplink transmission period is different from the first downlink transmission period, wherein the first The uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communication device according to any one of claims 22 to 24, wherein the time period of the second uplink transmission is different from the time period of the first uplink transmission indicated by the TDM mode, wherein the first uplink transmission Corresponding to the first serving cell, the second uplink transmission corresponds to the second serving cell.
The wireless communication device according to any one of claims 22 to 26, 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. Identify the association.
The wireless communication device according to claim 27, wherein the first message is associated with a first identification of the terminal device.
A wireless communication device is characterized by comprising:

A processing unit, the processing unit is used to determine that the PHR related parameters of the power headroom report meet preset conditions;

The sending unit is configured to trigger the PHR to be reported to the first access network device, wherein the PHR related parameters include at least one of the following:

The maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power management maximum power fallback P-MPR of the terminal device.
The wireless communication device according to claim 29, wherein the preset condition comprises at least one of the following conditions:

The change 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 a fourth threshold;

The change value of the P-MPR is greater than or equal to the fifth threshold.
The wireless communication device according to claim 29 or 30, wherein the device further comprises a receiving unit, and the receiving unit is configured to receive the first threshold and the received value from the first access network device. The second threshold, the third threshold, the fourth threshold, and/or the fifth threshold.
The wireless communication device according to any one of claims 29 to 31, wherein the processing unit is further configured to:

Establishing or restoring a first radio resource control RRC connection with the first access network device before determining that the PHR related parameters of the power headroom report meet a preset condition;

Establish or restore a second RRC connection with the second access network device.
The wireless communication device according to claim 32, 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. Identify the association.
A wireless communication device is characterized by comprising:

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

The sending unit is configured to send a second message to the terminal device, where the second message is used to instruct to release the first RRC connection, or to instruct handover, or to respond to the TDM mode.
The wireless communication device according to claim 34, wherein the first message includes a cause value, and the cause value is used to indicate that the terminal device has an IMD.
The wireless communication device according to claim 34 or 35, wherein 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.
The wireless communication device according to any one of claims 34 to 36, wherein the TDM mode is used to indicate that the period of the first uplink transmission is different from the period of the first downlink transmission, wherein the first The uplink transmission and the first downlink transmission correspond to the first serving cell.
The wireless communication device according to any one of claims 34 to 36, wherein the period of the second uplink transmission is different from the period of the first uplink transmission indicated by the TDM mode, wherein the first uplink transmission Corresponding to the first serving cell, the second uplink transmission corresponds to the second serving cell.
The wireless communication device according to any one of claims 34 to 38, 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. Identify the association.
The wireless communication device of claim 39, wherein the first message is associated with a first identification of the terminal device.
A wireless communication device is characterized by comprising:

A sending unit, the sending unit is configured to send a threshold information set to a terminal device, and the threshold information set includes at least one of the following:

The first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold,

The threshold information set corresponds to a power headroom report PHR related parameter, where the PHR related parameter includes at least one of the following:

The maximum transmit power of the terminal device, the maximum power fallback MPR of the terminal device, the additional maximum power fallback A-MPR of the terminal device, and the power management maximum power fallback P-MPR of the terminal device,

The first threshold corresponds to the maximum transmit power, the second threshold corresponds to the MPR, the third threshold corresponds to the A-MPR, and the fourth threshold corresponds to the MPR and the A-MPR. -MPR corresponds, and the fifth threshold corresponds to the P-MPR;

The receiving unit is configured to receive the PHR from the terminal device.
The wireless communication device according to claim 41, wherein the terminal device satisfies a preset condition, and the preset condition includes at least one of the following conditions:

The change 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.
A communication device comprising at least one processor and a communication interface, characterized in that:

The communication interface is connected to the at least one processor, and the communication interface is used to obtain a program or instruction, and the processor executes the program or instruction according to any one of claims 1 to 12 by running the program or instruction. The wireless communication method or the implementation of the wireless communication method according to any one of claims 13 to 21.
A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program runs on a computer,

Cause the computer to execute the wireless communication method according to any one of claims 1 to 12, or

The computer is caused to execute the wireless communication method according to any one of claims 13 to 21.