Communication methods and communication devices

Abstract

A communication method executed by a network device, a communication method executed by a terminal device, communication devices for implementing the communication methods, and a computer program product, relating to the technical filed of communications. The communication method executed by the network device comprises: sending a first instruction comprising first information to a terminal device so as to set the terminal device to report a maximum power fallback management event based on power management when working in an FR1 frequency band. Embodiments of the present disclosure can solve the SAR management problem of high-power terminal devices when working in the FR1 frequency band.

Description

Communication method and communication device

[0001] Cross-reference

[0002] The present disclosure claims priority to the Chinese patent application No. 2024105927718, filed on May 13, 2024, entitled “Communication method”, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of communication, in particular, to a communication method performed by a network device and a communication method performed by a terminal device, and a communication device, a computer readable storage medium and a computer program product for implementing the above-mentioned communication methods. BACKGROUND

[0004] High power carrier aggregation refers to that in inter-band carrier aggregation, the sum of the transmit power of a terminal in two frequency bands is increased from a maximum of 23dBm to a maximum of 27.8dBm. The high power carrier aggregation scheme can increase the coverage range and penetration ability of a signal, and solve the problem of deep coverage, but may cause the transmit power of the terminal to exceed the SAR (Specific Absorption Rate) regulation requirement. The SAR solution supported by the 3GPP R18 standard provides that the terminal device UE working in the FR1 frequency band uses the scheme of adjusting the duty cycle (also known as DPC (Delta Power Class)) to solve the SAR problem.

[0005] Currently, for the terminal device UE working in the FR1 frequency band, if the high power carrier aggregation technology is used, the scheme of adjusting the duty cycle cannot meet the requirements. It is generally believed in the 3GPP discussion that the terminal can achieve full-time slot transmission at the standard power of 23dBm (PC3) in the FDD (Frequency Division Duplexing) mode, which meets the SAR requirement and has no system design margin. Therefore, the adjustment of the duty cycle scheme is set as follows: when the power of PC2 is 26dBm, if the uplink duty cycle exceeds 50%, the UE maximum transmit power is set back by 3dBm; when the power of PC1.5 is 29dBm, if the uplink duty cycle exceeds 25%, the UE maximum transmit power is set back by 3dBm, and if the uplink duty cycle exceeds 50%, the UE maximum transmit power is set back by 6dBm.

[0006] When a terminal device UE uses a high power carrier aggregation technology, the actual maximum transmit power is not an integer multiple of 23dBm (such as a high power terminal device (High Power User Equipment, HPUE) with a high power of 27.8dBm), the duty cycle adjustment scheme cannot set a suitable SAR duty cycle threshold and maximum transmit power backoff value for the terminal device UE, and therefore when a terminal device such as HPUE has a SAR problem, the terminal device such as HPUE cannot perform appropriate processing and reporting.

[0007] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art.

[0008] SUMMARY

[0009] The purpose of the present disclosure is to provide a communication method to solve the SAR management problem of a high power terminal device operating in the FR1 frequency band.

[0010] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, performed by a network device, comprising: sending, by the network device, a first instruction containing first information to a terminal device, to set the terminal device to report a maximum power backoff management event based on power management when operating in the FR1 frequency band.

[0011] According to a second aspect of the present disclosure, a communication method is provided, performed by a terminal device, the terminal device being in communication with a network device configured to perform any of the communication methods described above, the communication method comprising: setting a first reporting parameter to a first value in response to a first instruction containing first information, the first information being used to set the terminal device to report a maximum power backoff management event based on power management when operating in the FR1 frequency band; performing a maximum power backoff management based on power management when it is determined that the terminal device is currently operating in the FR1 frequency band and satisfies a first predetermined condition; and sending third information to the network device to report the maximum power backoff management event based on power management.

[0012] According to a third aspect of the present disclosure, a communication device is provided, the communication device being a network device, or the communication device being a terminal device, the communication device comprising: a memory; and a processor coupled to the memory, the processor being configured to execute a method performed by a network device or a method performed by a terminal device based on instructions stored in the memory, the method being any of the methods described above.

[0013] According to a fourth aspect of the present disclosure, a computer readable storage medium is provided, having a program stored thereon, the program being executed by a processor to implement the method described in any of the above aspects.

[0014] The embodiment of the present disclosure sets the capability of reporting the maximum power backoff management event based on power management when the terminal device works in the FR1 frequency band, so that the terminal device can use the maximum power backoff management (P-MPR) scheme to reduce power and solve the SAR problem when working in the FR1 frequency band, thereby solving the problem that the terminal device using the high-power carrier aggregation technology cannot perform SAR management when working in the FR1 frequency band.

[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not limiting to the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] FIG. 1 is a structural schematic diagram of a communication system according to an embodiment of the present disclosure.

[0018] FIG. 2 shows a flowchart of a communication method 200 according to an embodiment of the present disclosure.

[0019] FIG. 3 is a flowchart of the method 200 according to an embodiment of the present disclosure.

[0020] FIG. 4 is an interaction schematic diagram of the method 200 according to an embodiment of the present disclosure.

[0021] FIG. 5 is an interaction schematic diagram of the method 200 according to an embodiment of the present disclosure.

[0022] FIG. 6 is a flowchart of the method 200 according to an embodiment of the present disclosure.

[0023] FIG. 7 is an interaction schematic diagram of the method 200 according to an embodiment of the present disclosure.

[0024] FIG. 8 is a flowchart of another communication method according to the present disclosure.

[0025] FIG. 9 is a flowchart of a communication method 800 according to an embodiment of the present disclosure.

[0026] FIG. 10 is a flowchart of the communication method 800 according to an embodiment of the present disclosure.

[0027] FIG. 11 shows a structural block diagram of a network device according to an embodiment of the present disclosure.

[0028] FIG. 12 shows a structural block diagram of a terminal device according to an embodiment of the present disclosure.

[0029] FIG. 13 is a block diagram of a communication device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] Example implementations are now described with reference to the drawings. Example implementations can, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example implementations to those skilled in the art. The features, structures, or characteristics described can be combined in one or more implementations in any suitable manner. In the following description, numerous specific details are provided, such as examples of programming, software modules, user selections, network transactions, database queries, database structures, hardware modules, hardware- specific details and

[0031] In addition, the drawings are only schematic and the dimensions of the various layers are not necessarily to scale with respect to one another. Like reference numerals designate like or similar parts throughout the several views. Some of the blocks in the drawings represent functional entities that can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0032] Example implementations of the present disclosure will now be described in detail with reference to the accompanying drawings.

[0033] FIG. 1 is a schematic diagram of a structure of a communication system according to an example implementation of the present disclosure.

[0034] As shown in FIG. 1, the communication system architecture includes a radio access network and a core network. The radio access network can include at least one radio access network device (e.g., network device 20 in FIG. 1) and at least one terminal (e.g., terminal 10 in FIG. 1). The terminal is connected to the radio access network device in a wireless manner, and the radio access network device is connected to the core network in a wireless or wired manner. The core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or a physical device can integrate the functions of part of the core network device and part of the radio access network device. Terminals and terminals, and radio access network devices and radio access network devices can be connected to each other in a wired or wireless manner. FIG. 1 is only a schematic diagram, and the communication system can also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG. 1.

[0035] The network device 20 can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5th generation (5G) mobile communication system, a next generation NodeB in a 6th generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; or can be a module or unit that completes part of the functions of a base station, for example, can be a central unit (CU) or a distributed unit (DU). The network device 20 can be a macro base station, or a micro base station or an indoor station, or a relay node or a donor node, etc. Embodiments of the present disclosure do not limit the specific device technology and specific device form adopted by the network device 20. For ease of description, the following describes the network device 20 as a base station.

[0036] The terminal 10 can also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. For ease of description, the following describes the terminal 10 as a terminal device / UE. The terminal can be widely applied to various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, unmanned aerial vehicle, helicopter, airplane, ship, robot, mechanical arm, smart home device, etc. Embodiments of the present disclosure do not limit the specific device technology and specific device form adopted by the terminal.

[0037] The base station and the terminal can be fixed in position or mobile. The base station and the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; can also be deployed on an airplane, balloon, and artificial satellite. Embodiments of the present disclosure do not limit the application scenarios of the base station and the terminal.

[0038] The roles of the base station and the terminal can be relative. For example, a helicopter or a drone can be configured as a mobile base station. For a terminal accessing a wireless access network through the helicopter or the drone, the helicopter or the drone is a base station; but for the base station, the helicopter or the drone is a terminal, that is, the base station communicates with the helicopter or the drone through a wireless air interface protocol. Of course, the base station and the helicopter or the drone can also communicate through an interface protocol between base stations. In this case, the helicopter or the drone is also a base station relative to the base station. Therefore, the base station and the terminal can be collectively referred to as a communication apparatus / communication device. The network device 20 in FIG. 1 can be referred to as a communication apparatus / communication device with a base station function, and the terminal 10 in FIG. 1 can be referred to as a communication apparatus / communication device with a terminal function.

[0039] The base station and the terminal, the base station and the base station, and the terminal and the terminal can communicate through a licensed frequency spectrum, an unlicensed frequency spectrum, or both. They can communicate through a frequency spectrum below 6 gigahertz (GHz), a frequency spectrum above 6 GHz, or both. The embodiments of the present disclosure do not limit the frequency spectrum resources used for wireless communication.

[0040] In the embodiments of the present disclosure, the functions of the base station can also be performed by a module (such as a chip) in the base station or a control subsystem containing the functions of the base station. The control subsystem containing the functions of the base station can be a control center in the above-mentioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of the terminal can also be performed by a module (such as a chip or a modem) in the terminal or a device containing the functions of the terminal.

[0041] The technical solutions provided by the embodiments of the present disclosure can be applied to wireless communication between communication devices. The wireless communication between communication devices can include wireless communication between a network device and a terminal, wireless communication between network devices, and wireless communication between terminals. In the embodiments of the present disclosure, the term "wireless communication" can also be referred to as "communication", and the term "communication" can also be described as "data transmission", "information transmission", or "transmission".

[0042] Those skilled in the art can know that the number of terminals and network devices in FIG. 1 is only illustrative, and any number of terminals and network devices can be provided according to actual needs. The embodiments of the present disclosure do not limit this.

[0043] In the above system architecture, the embodiment of the present disclosure provides a communication method, which can be implemented by the network device in the above system architecture.

[0044] FIG. 2 shows a flowchart of a communication method 200 in the embodiment of the present disclosure. The method provided in the embodiment of FIG. 2 can be executed by a network device, which can be a base station for example, but the present disclosure is not limited thereto. As shown in FIG. 2, the method 200 provided in the embodiment of the present disclosure can include the following steps.

[0045] In step S1, a first instruction containing first information is sent to the terminal device to set the terminal device to report a maximum power backoff management event based on power management when working in the FR1 frequency band.

[0046] Since the FR1 frequency is a low frequency band, the absorption rate of radiation is relatively low, and an adjustment duty cycle scheme (i.e., a DPC scheme) that maintains communication performance, is simpler and suitable for a low frequency band communication environment is usually used to control the radiation level, that is, the average radiation level of the device is controlled by adjusting the active time and the sleep time during communication to meet the SAR requirement.

[0047] The maximum power backoff management based on power management can be simply referred to as a P-MPR (Power Management Maximum Power Reduction) method. This method is specified by the 3GPP standard to be applied in the FR2 frequency band, i.e., the millimeter wave frequency band. The P-MPR scheme controls the radiation level by dynamically managing the maximum output power (MPR) of the device. When the device is close to the human body, the UE dynamically adjusts the maximum output power according to the current environment and usage to ensure that the SAR value is within the allowed range. Compared with the DPC scheme, the P-MPR method is more flexible, unlike the DPC scheme which can only take the power backoff value as 0 / 3 / 6 dBm, but can determine the specific value of the transmitted power change (0-12 dBm) based on the terminal device implementation, for example, a HPUE of 27.8 dBm can reduce the power to 23 dBm (standard power in the existing specification) under the P-MPR scheme.

[0048] The embodiment of the present disclosure sets the capability of reporting a maximum power backoff management event based on power management when the terminal device works in the FR1 frequency band, so that the terminal device can use the maximum power backoff management (P-MPR) scheme to reduce the power and solve the SAR problem when working in the FR1 frequency band, thereby solving the problem that the terminal device using the high power carrier aggregation technology cannot perform SAR management when working in the FR1 frequency band.

[0049] In an example embodiment, the first instruction comprises a radio resource control information element power headroom report configuration instruction (RRC IE PHR-config, RRC Information Element Power Headroom Report Configuration). The RRC IE PHR-config is an information element in an RRC message, used to configure parameters for the UE to report power headroom to the base station. The power headroom refers to the amount of power that the UE can increase at the current time relative to its maximum allowed transmission power. The base station can use the power headroom reported by the UE to adjust the transmission power of the UE to ensure good signal quality and network performance. Under the conventional configuration, the parameters include the trigger condition, reporting period, reporting offset, etc. of the UE to report the power headroom, and indicate how the UE feeds back the power headroom information to the base station. After the UE receives these PHR configurations, it reports the power headroom to the base station according to the corresponding conditions indicated by the PHR configurations.

[0050] In an embodiment of the present disclosure, a first parameter mpe-Reporting-FR1-r19 is added in the RRC IE PHR-config instruction. When the first parameter mpe-Reporting-FR1-r19 is set to a preset value (e.g. 1), a first information is formed to indicate that the UE uses the P-MPR method for power management when working in the FR1 frequency band, and reports the P-MPR event after power management. That is, the base station indicates whether the UE reports the P-MPR event through the value of the RRC parameter (mpe-Reporting-FR1) in the RRC IE PHR-config instruction.

[0051] FIG. 3 is a flowchart of the method 200 in an embodiment of the present disclosure.

[0052] Referring to FIG. 3, in an example embodiment, the method 200 can further comprise a step S2 of receiving third information reported by the terminal device, the third information being used to record a maximum power backoff management event based on power management occurring when the terminal device works in the FR1 frequency band.

[0053] In the example embodiment, the first information is used to set the first reporting parameter to a first value in the terminal device, so that the terminal device sends third information to the network device when working in the FR1 frequency band, the first reporting parameter is the first value, and the second reporting parameter is the second value, the third information being used to report a maximum power backoff management event based on power management occurring when the terminal device works in the FR1 frequency band; wherein the first reporting parameter is used to set whether to report the maximum power backoff management event based on power management when the terminal device works in the FR1 frequency band, and the first value of the first reporting parameter is used to indicate that the terminal device reports the maximum power backoff management event based on power management when working in the FR1 frequency band; the second reporting parameter is used to set whether to report a power level change event when the terminal device works in the FR1 frequency band, and the second value of the second reporting parameter is used to indicate that the terminal device does not report the power level change event when working in the FR1 frequency band.

[0054] In the example embodiment, the first reporting parameter is mpe-Reporting-FR1, and the second reporting parameter is dpc-Reporting-FR1. The default values of the first reporting parameter and the second reporting parameter can be set to 0, i.e., the first value is set to 1, and the second value is set to 0, and the capability configuration of the UE using the P-MPR method for power management and reporting the P-MPR event is realized by modifying the value of the first reporting parameter.

[0055] In the example embodiment, the third information is located in the first two bits of the second row of the power headroom report MAC control element information (PHR MAC CE, Power Headroom Report MAC Control Element) sent by the terminal device, and the third information includes a specific value of the maximum power backoff measured by the terminal device after the maximum power backoff management event based on power management.

[0056] For example, the network device (base station) can deliver the first information by setting the first parameter mpe-Reporting-FR1-r19 to 1 in the RRC IE PHR-config instruction sent to the UE; after receiving the first instruction, the UE sets the first reporting parameter mpe-Reporting-FR1 to 1, at this time: mpe-Reporting-FR1 = 1, dpc-Reporting-FR1 = 0.

[0057] When the UE works in the FR1 frequency band, if it is judged according to the preset condition that the power needs to be reduced to meet the SAR regulation, the parameter mpe-Reporting-FR1 = 1 and dpc-Reporting-FR1 = 0 are read, the P-MPR mode is selected to reduce the power, and the P-MPR event after reducing the power is reported to the base station through the third information. The third information can include the specific value of P-MPR measured by the UE, so that the base station can obtain the latest UE power information for overall management.

[0058] Table 1 is the correspondence between the specific value of P-MPR and the third information.

[0059] Table 1:

[0060] The first two bits of the second row of the PHR MAC CE message are used in the existing standard to report the power level change in the DPC event when working in the FR1 frequency. In the embodiment of the present disclosure, when the UE judges that it works in the FR1 frequency band, the first reporting parameter is the first value, and the second reporting parameter is the second value, when SAR management is needed (for example, the power is greater than the standard power), the power is backed off using the P-MPR method to meet the SAR requirement, and the P-MPR event is reported using the field originally set to report the power level change of the DPC event, that is, the same field is used to report the power level change of the DPC and the specific value of the P-MPR. By using the same field to report the power level change of the DPC and the specific value of the P-MPR, the high-level parameter can be used for control, and it is more flexible.

[0061] After receiving the third information, the base station judges that the UE currently reports the P-MPR event based on the first information (for example, the value of the first parameter mpe-Reporting-FR1-r19) or other information in the first instruction sent before, so as to identify the field as the specific value of P-MPR of the UE.

[0062] In an exemplary embodiment, the first instruction further includes second information, which is used to indicate a subframe in which the terminal device reports a maximum power backoff management event based on power management, and a power threshold value triggering the reporting of the maximum power backoff management event based on power management.

[0063] The second information can be transmitted, for example, by setting the value of the second parameter MPE-Config-FR1-r19 in the RRC IE PHR-config instruction. That is, the first instruction can be:

[0064] RRC IE PHR-config (mpe-Reporting-FR1-r19, MPE-Config-FR1-r19), wherein the value of the first parameter mpe-Reporting-FR1-r19 is used to indicate whether the UE reports the P-MPR event, and the value of the second parameter MPE-Config-FR1-r19 is used to indicate the power threshold value of the UE reporting the P-MPR event and the subframe reporting the P-MPR event.

[0065] That is, the embodiment of the present disclosure adds two parameters in the RRC IE PHR-config: the first parameter mpe-Reporting-FR1-r19 and the second parameter MPE-Config-FR1-r19. If the first parameter mpe-Reporting-FR1-r19 is configured (set to the first value, i.e., the first information), the second parameter MPE-Config-FR1-r19 also needs to be configured (configured to form the second information).

[0066] After the UE receives the first instruction containing the second information, when the power reaches the power threshold value indicated by the value of MPE-Config-FR1-r19, the UE performs P-MPR power management and reports the third information including the specific value of P-MPR to the base station through the subframe indicated by the value of MPE-Config-FR1-r19.

[0067] FIG. 4 is an interaction diagram of the method 200 in the embodiment of the present disclosure.

[0068] Referring to FIG. 4, on the UE side, the value of the first reporting parameter mpe-Reporting-FR1 is the default value 0, and the value of the second reporting parameter dpc-Reporting-FR1 is the default value 0.

[0069] In step S41, the base station sends a first instruction to the UE, and the first instruction includes first information and second information, for example, in the form of:

[0070] RRC IE PHR-config (mpe-Reporting-FR1-r19, MPE-Config-FR1-r19), wherein the first parameter mpe-Reporting-FR1-r19 and the second parameter MPE-Config-FR1-r19 are both assigned values to indicate that the UE reports the P-MPR event as required.

[0071] In step S42, after the UE receives the first instruction containing the first information and the second information, the value of the first reporting parameter mpe-Reporting-FR1 is modified to 1 according to the first information and the second information.

[0072] At step S43, the UE judges whether it works in the FR1 frequency band, if yes, it goes to step S44 to judge whether the current transmission power exceeds the standard power specified by the SAR, if no, it returns to step S43, if yes, it goes to step S45 to reduce the transmission power by using the P-MPR method, so that the transmission power is equal to the standard power meeting the SAR specification.

[0073] At step S46, the UE reports the P-MPR event through the third information after P-MPR management, and the third information includes the specific value of P-MPR recorded by the first two bits of the second row of the PHR MAC CE information.

[0074] The embodiment shown in FIG. 4 configures the UE to report the P-MPR event by the network device / base station, and in other embodiments, the base station can also report the message based on the capability of the UE to configure the UE to report the P-MPR event.

[0075] In the exemplary embodiment, the terminal device further includes: receiving the capability report message including the fourth information from the terminal device, and sending the first instruction to the terminal device, the fourth information being used to indicate that the terminal device supports the capability of reporting the maximum power backoff management event based on power management when working in the FR1 frequency band.

[0076] The fourth information exists in the capability report message of the UE to the base station. In the exemplary embodiment, the fourth information includes a preset capability parameter being a first value.

[0077] A preset capability parameter tdd-MPE-P-MPR-Reporting-r19 of the UE can be newly defined to indicate the capability of the UE whether supporting the P-MPR event report in the FR1 frequency band. When the preset capability parameter is a first value, it indicates that the UE supports the capability of the P-MPR event report in the FR1 frequency band, and when the capability parameter is a second value, it indicates that the UE does not support the capability of the P-MPR event report in the FR1 frequency band. The exemplary numerical values of the first value and the second value can be 1 and 0, or 0 and 1, respectively.

[0078] If the UE reports the information (i.e., the fourth information) of the preset capability parameter (tdd-MPE-P-MPR-Reporting-r19) being the first value to the base station through the UE capability report process (RRC UE capability transfer), it indicates that the UE supports the P-MPR event report in the FR1 frequency band.

[0079] In an example embodiment, the fourth information can be reported through the RRC IE MAC-Parameters, i.e., adding information with the first value of tdd-MPE-P-MPR-Reporting-r19 in the RRC IE MAC-Parameters.

[0080] FIG. 5 is an interaction schematic diagram of the method 200 in the embodiment of the present disclosure.

[0081] Referring to FIG. 5, compared with the embodiment shown in FIG. 4, the embodiment shown in FIG. 5 further includes a step S40 before the step S41: receiving a capability reporting message including the fourth information from the terminal device.

[0082] The fourth information can be that the preset capability parameter tdd-MPE-P-MPR-Reporting-r19 is the first value, and the fourth information can exist in the RRC IE MAC-Parameters message reported by the UE to the base station.

[0083] Compared with directly configuring the terminal device to report the P-MPR event, configuring the terminal device to report the P-MPR event after receiving the fourth information can avoid some terminal devices not supporting P-MPR mode power management in the FR1 frequency band, receiving the first instruction, still performing DPC mode power management in the FR1 stage, and reporting the value of DPC through the first two bits of the second row of the PHR MAC CE message, while the base station still considers that the terminal device reports the value of P-MPR in the bit, causing misjudgment.

[0084] In summary, by setting the UE to introduce the P-MPR event reporting mechanism in the FR1 frequency band, a variety of SAR solutions are provided, so that the UE can accurately report the maximum transmit power change caused by SAR limitation.

[0085] Corresponding to the P-MPR event reporting setting, since the method 200 improves the UE parameters and the communication mode between the UE and the base station, the UE working in the FR1 frequency band can also be set to report the DPC (Delta Power Class) event. In the prior art, the UE working in the FR1 frequency band can only perform DPC management and can only report the DPC event without configuration.

[0086] FIG. 6 is a flowchart of the method 200 in the embodiment of the present disclosure.

[0087] Referring to FIG. 6, in an example embodiment, the method 200 further includes:

[0088] In step S3, the terminal device is sent a first instruction containing fifth information, so as to set the terminal device to report a power level change event when working in the FR1 frequency band. The fifth information is used to set the second reporting parameter to a first value in the terminal device, so as to cause the terminal device to send sixth information to the network device when working in the FR1 frequency band, the first reporting parameter is a second value, and the second reporting parameter is the first value. The sixth information is used to report a power level change event when the terminal device works in the FR1 frequency band. The first reporting parameter is used to set whether the terminal device reports a maximum power backoff management event based on power management when working in the FR1 frequency band. The second value of the first reporting parameter is used to indicate that the terminal device does not report a maximum power backoff management event based on power management when working in the FR1 frequency band. The second reporting parameter is used to set whether the terminal device reports a power level change event when working in the FR1 frequency band. The first value of the second reporting parameter is used to indicate that the terminal device reports a power level change event when working in the FR1 frequency band.

[0089] FIG. 7 is an interaction schematic diagram of the method 200 in the embodiment of the present disclosure.

[0090] Referring to FIG. 7, on the UE side, the value of the first reporting parameter mpe-Reporting-FR1 is a default value 0, and the value of the second reporting parameter dpc-Reporting-FR1 is a default value 0.

[0091] In step S71, the base station sends a first instruction to the UE. The first instruction includes fifth information, for example, in the form of RRC IE PHR-config(dcp-Reporting-FR1-r19). The parameter dcp-Reporting-FR1-r19 can be a first value. In some embodiments, the power threshold value of the UE reporting a DPC event and the subframe of the UE reporting a DPC event can also be set by other information in the first instruction, which is not limited in the present disclosure.

[0092] In step S72, after the UE receives the first instruction, the value of the second reporting parameter dpc-Reporting-FR1 is modified to 1 according to the fifth information.

[0093] In step S73, the UE determines whether it works in the FR1 frequency band. If yes, it enters step S74 to determine whether the current transmission power exceeds the standard power specified by the SAR. If no, it returns to step S73. If yes, it enters step S75 to reduce the transmission power using the DPC method, so that the transmission power is equal to the standard power that meets the SAR.

[0094] At step S76, the UE reports the power change level through the sixth information after DPC management, and the sixth information includes the first two bits of the second row of the PHR MAC CE information to record the specific value of the power change level (the specific value of the DPC measured by the UE).

[0095] Table 2 is a correspondence between the power change level and the sixth information.

[0096] Table 2:

[0097] In the exemplary embodiments, the sixth information corresponds to the same field as the third information, for example, can be the first two bits of the second row of the PHR MAC CE message.

[0098] Therefore, by configuring the first reporting parameter and the second reporting parameter through the first information and the fifth information, the terminal device can be set to select the power management / reporting P-MPR event in the P-MPR mode and the DPC event in the DPC mode when working in the FR1 frequency band, so that the UE can accurately report the maximum transmit power change caused by SAR restriction according to the actual working condition and working mode.

[0099] Based on the same inventive concept, another communication method is provided in the embodiments of the disclosure, which is executed by the terminal device mentioned in the communication method 200, as described in the following embodiments.

[0100] FIG. 8 is a flowchart of another communication method of the disclosure.

[0101] Referring to FIG. 8, the communication method 800 is executed by a terminal device, and the terminal device communicates with a network device, and the network device is used to execute the communication method 200 corresponding to any of the above embodiments, and the communication method 800 includes:

[0102] At step S81, in response to a first instruction containing first information, the first reporting parameter is set to a first value, and the first information is used to set the terminal device to report a maximum power backoff management event based on power management when working in the FR1 frequency band;

[0103] At step S82, when it is determined that the current working frequency band is FR1 and the first preset condition is met, the maximum power backoff management based on power management is executed.

[0104] At step S83, the third information is sent to the network device to report the maximum power backoff management event based on power management.

[0105] In the example embodiment, the first preset condition comprises that the first reporting parameter is a first value, the second reporting parameter is a second value, and the current transmission power is greater than the standard power; wherein the first reporting parameter is used to set whether the terminal device reports the maximum power backoff management event based on power management when working in the FR1 frequency band, the first value of the first reporting parameter is used to instruct the terminal device to report the maximum power backoff management event based on power management when working in the FR1 frequency band; and the second reporting parameter is used to set whether to report the power level change event when working in the FR1 frequency band, and the second value of the second reporting parameter is used to instruct not to report the power level change event when working in the FR1 frequency band.

[0106] In the example embodiment, the first instruction further comprises second information, the second information being used to indicate a subframe in which the terminal device reports the maximum power backoff management event based on power management, and a power threshold value triggering the reporting of the maximum power backoff management event based on power management, and the first preset condition further comprises that the current power exceeds the power threshold value, and the sending of the third information to the network device comprises sending the third information in the subframe, the third information being located in the first two bits of the second row of the power headroom report MAC control element information, and the third information comprising a specific value of the maximum power backoff measured after the maximum power backoff management event based on power management.

[0107] FIG. 9 is a flowchart of a communication method 800 in the embodiment of the present disclosure.

[0108] Referring to FIG. 9, in the example embodiment, before responding to the first instruction, the method 800 further comprises:

[0109] Step S80, sending a capability reporting message comprising fourth information to the network device to report the capability of the terminal device supporting reporting the maximum power backoff management event based on power management when working in the FR1 frequency band.

[0110] In the example embodiment, the fourth information comprises that a preset capability parameter is a first value.

[0111] FIG. 10 is a flowchart of a communication method 800 in the embodiment of the present disclosure.

[0112] Referring to FIG. 10, in the example embodiment, the method 800 further comprises:

[0113] Step S84, in response to the first instruction comprising fifth information, setting the second reporting parameter to a first value, the fifth information being used to set the terminal device to report the power level change event when working in the FR1 frequency band;

[0114] Step S85, when it is determined that the current working is in the FR1 frequency band and the second preset condition is met, performing the power level change;

[0115] Step S86, the sixth information is sent to the network device, and the power level change event is reported.

[0116] In the example embodiment, the second preset condition comprises: the first reporting parameter is the second value, the second reporting parameter is the first value, and the current transmission power is greater than the standard power; wherein the first reporting parameter is used to set whether to report the maximum power backoff management event based on power management when working in the FR1 frequency band, and the second value of the first reporting parameter is used to indicate that the maximum power backoff management event based on power management is not reported when working in the FR1 frequency band; the second reporting parameter is used to set whether to report the power level change event when working in the FR1 frequency band, and the second value of the second reporting parameter is used to indicate that the power level change event is not reported when working in the FR1 frequency band.

[0117] The method 800 can be performed by the UE shown in FIG. 4, FIG. 5, and FIG. 7, and the specific functions of the UE have been described in detail in the corresponding embodiments of FIG. 4, FIG. 5, and FIG. 7, which will not be repeated here.

[0118] Based on the same inventive concept, the disclosure embodiments also provide a network device, as described in the following embodiments. Since the principle of solving problems of the network device embodiment is similar to the above-mentioned method embodiment, the implementation of the network device embodiment can be referred to the implementation of the above-mentioned method embodiment, and the repeated parts will not be repeated.

[0119] FIG. 11 shows a structural block diagram of a network device in the embodiments of the disclosure. As shown in FIG. 11, the network device 110 includes a transceiver unit 111. The transceiver unit 111 is configured to send a terminal device a first instruction containing first information, to set the terminal device to report a maximum power backoff management event based on power management when working in the FR1 frequency band. The transceiver unit 111 is also configured to receive third information reported by the terminal device, the third information being used to record the maximum power backoff management event based on power management when the terminal device works in the FR1 frequency band.

[0120] Based on the same inventive concept, the disclosure embodiments also provide a terminal device, as described in the following embodiments. Since the principle of solving problems of the terminal embodiment is similar to the above-mentioned method embodiment, the implementation of the terminal device embodiment can be referred to the implementation of the above-mentioned method embodiment, and the repeated parts will not be repeated.

[0121] FIG. 12 shows a structural block diagram of a terminal device in an embodiment of the present disclosure. As shown in FIG. 12, the terminal device 120 includes a transceiver unit 121. The transceiver unit 121 is configured to, in response to a first instruction containing first information used to set the terminal device to report a maximum power backoff management event based on power management when operating in an FR1 frequency range, set a first reporting parameter to a first value; and perform maximum power backoff management based on power management when it is determined that the terminal device is currently operating in the FR1 frequency range and a first preset condition is met. The transceiver unit 121 is further configured to send third information to the network device to report the maximum power backoff management event based on power management. The transceiver unit 121 is further configured to, before responding to the first instruction, send a capability reporting message including fourth information to the network device to report a capability of the terminal device to support reporting the maximum power backoff management event based on power management when operating in the FR1 frequency range. It should be noted that the above modules / units can be executed in a computer system such as a group of computer executable instructions as part of the apparatus.

[0122] Those skilled in the art can understand that each aspect of the present application can be implemented as a system, a method or a program product. Therefore, each aspect of the present application can be specifically implemented as a complete hardware embodiment, a complete software embodiment (including firmware, microcode, etc.), or an embodiment combining hardware and software aspects, which can be collectively referred to as "circuitry", "module" or "system".

[0123] In an exemplary embodiment of the present disclosure, a communication device capable of implementing the above method is also provided.

[0124] The communication device 1300 according to this embodiment of the present application will be described below with reference to FIG. 13. FIG. 13 shows the communication device 1300 as an example only, and should not be taken as limiting the functionality or applicability of embodiments of the present application.

[0125] As shown in FIG. 13, the communication device 1300 is in the form of a general computing device. The components of the communication device 1300 can include, but are not limited to, the above-mentioned at least one processing unit 1310, the above-mentioned at least one storage unit 1320, and a bus 1330 connecting different system components, including the storage unit 1320 and the processing unit 1310.

[0126] The storage unit stores program code that can be executed by the processing unit 1310, so that the processing unit 1310 performs the steps described in the above "Exemplary Method" section according to various exemplary embodiments of the present application. For example, the processing unit 1310 can perform the method as shown in the embodiments of the present disclosure.

[0127] In some embodiments, when the communication device 1300 is a terminal device, the processing unit 1010 can perform the following steps of the above method embodiments: setting a first reporting parameter to a first value in response to a first instruction containing first information, the first information being used to set the terminal device to report a maximum power backoff management event based on power management when operating in a FR1 frequency range; performing maximum power backoff management based on power management when it is determined that the terminal device is currently operating in the FR1 frequency range and meets a first preset condition; and sending third information to the network device to report the maximum power backoff management event based on power management.

[0128] In some embodiments, when the communication device 1300 is a network device, the processing unit 1010 can perform the following steps of the above method embodiments: sending a first instruction containing first information to a terminal device to set the terminal device to report a maximum power backoff management event based on power management when operating in a FR1 frequency range.

[0129] The storage unit 1320 can include a readable medium in the form of volatile storage unit, such as a random access memory (RAM) 13201 and / or a cache memory 13202, and can further include a read-only memory (ROM) 13203.

[0130] The storage unit 1320 can further include program / utility 13204 having a set of programs / modules 13205, including without limitation, an operating system, one or more application programs, other programs, and programmatic data, each or some combination thereof, likely implemented on the processing unit, and possibly utilized by any of the applications 1310. The programs stored by the program modules 13205 can include programs / instructions enabling the processing unit 1010 to perform various functions as described herein.

[0131] The bus 1330 can be representative of one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration bus, a processor or local bus using any of a variety of bus structures, and the like.

[0132] The communication device 1300 can also communicate with one or more external devices 1400 such as a keyboard, a pointing device, a Bluetooth device, etc.; and can communicate with one or more devices that enable a user to interact with the communication device 1300; and / or communicate with any devices (such as a router, a modem, etc.) that enable the communication device 1300 to communicate with one or more other computing devices. Such communication can occur via Input / Output (I / O) interface 1350. Still yet, the communication device 1300 can communicate with one or more networks such as a local area network (LAN), a general wide area network (WAN), and / or a public network (e.g., the Internet) via network adapter 1360. As depicted, network adapter 1360 communicates with the other components of the communication device 1300 via bus 1330. It should be appreciated that the many of the components depicted herein are implemented as part of a virtual machine that is run on a host device, such as a server computer. It should be appreciated that other hardware and / or software modules can be used in conjunction with the communication device 1300. For example, a microcode, a device driver, a redundant processing unit, external disk drive array, a RAID system, a tape drive, and data archival storage system, etc. can be used in conjunction with the communication device 1300.

[0133] From the above description of the embodiments, those skilled in the art will readily appreciate that the example embodiments described herein can be implemented by software and / or by hardware coupled with software. Accordingly, the technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product. The software product can be stored in a non-volatile storage medium (e.g., a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes a number of instructions for causing a computing device (e.g., a personal computer, a server, a terminal device, or a network device, etc.) to perform the methods according to the embodiments of the present disclosure.

[0134] In the example embodiments of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above-described methods of the present disclosure is stored. In some possible embodiments, various aspects of the present disclosure can also be implemented in the form of a program product, which includes program codes for causing a terminal device to perform the steps described in the above “Example Method” section according to various example embodiments of the present disclosure when the program product is run on the terminal device.

[0135] The program product for implementing the above-described methods according to the embodiments of the present disclosure can take the form of a portable compact disc read-only memory (CD-ROM) and include program codes, and can be run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited to this, and in this document, a readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or apparatus.

[0136] The program product can take any combination of one or more computer-readable media. The computer-readable media can be a computer-readable storage medium or a computer-readable signal medium. The computer-readable storage medium can be, for example but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium include the following: an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0137] The computer-readable signal medium can include a computer-readable storage medium that is configured to store and deliver a computer-readable program code. The computer-readable program code can be propagated as a computer-readable signal medium.

[0138] The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination of the foregoing.

[0139] The program code for carrying out operations of the present disclosure can be written in any combination of one or more programming languages, including an object-oriented programming language such as Java, C++, etc., or conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server. In the latter scenario, the remote computing device can be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computing device, such as through the Internet using an Internet Service Provider.

[0140] It should be noted that, although several modules or units of the device for action execution are mentioned in the foregoing detailed description, such a division is not mandatory. Indeed, according to an embodiment of the present disclosure, the features and functionalities of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functionalities of one module or unit described above can be further divided into a plurality of modules or units.

[0141] Furthermore, the above-described figures are merely schematic illustrations of the processes included in the method according to the exemplary embodiments of the present application, and are not intended for limiting purposes. It is readily understood that the processes shown in the above-described figures do not indicate or limit the time sequence of these processes. In addition, it is also readily understood that these processes can be executed synchronously or asynchronously, for example, in a plurality of modules.

[0142] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the present application cover any and all variations of the present disclosure that come within the scope of the claims and their equivalents. It is intended that the specification and examples be considered exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims. Industrial applicability

[0143] By setting the terminal device to report the capability of the maximum power backoff management event based on power management when working in the FR1 frequency band, the embodiments of the present disclosure can enable the terminal device to use the maximum power backoff management (P-MPR) scheme to reduce the power and solve the SAR problem when working in the FR1 frequency band, thereby solving the problem that the terminal device using the high-power carrier aggregation technology cannot perform SAR management when working in the FR1 frequency band.

Claims

1. A communication method characterized by comprising: The method is performed by a network device, comprising: sending, to a terminal device, a first instruction containing first information, so that the terminal device reports a maximum power backoff management event based on power management when operating in a frequency range 1 (FR1) frequency band.

2. The communication method of claim 1, wherein, The first instruction comprises a radio resource control (RRC) information element (IE) power headroom report (PHR) configuration instruction.

3. The communication method of claim 1, wherein, The first information is used to set a first reporting parameter to a first value in the terminal device, so that the terminal device sends third information to the network device when operating in the FR1 frequency band, the first reporting parameter is the first value, and a second reporting parameter is a second value, the third information being used to report the maximum power backoff management event based on power management when the terminal device operates in the FR1 frequency band. The first reporting parameter is used to set whether the terminal device reports the maximum power backoff management event based on power management when operating in the FR1 frequency band, and the first value of the first reporting parameter is used to instruct the terminal device to report the maximum power backoff management event based on power management when operating in the FR1 frequency band; and the second reporting parameter is used to set whether the terminal device reports a power class change event when operating in the FR1 frequency band, and the second value of the second reporting parameter is used to instruct the terminal device not to report the power class change event when operating in the FR1 frequency band.

4. The communication method of claim 1, wherein, The method further comprises: receiving third information reported by the terminal device, the third information being used to record the maximum power backoff management event based on power management when the terminal device operates in the FR1 frequency band.

5. The communication method according to claim 3 or 4, characterized by, The third information is located in the first two bits of a second row of a power headroom report (PHR) MAC control element (CE) information sent by the terminal device, and the third information comprises a specific value of the maximum power backoff measured by the terminal device after the maximum power backoff management event based on power management.

6. The communication method of claim 1, wherein, The method further comprises: sending, to the terminal device, the first instruction after receiving a capability report message containing fourth information from the terminal device, the fourth information being used to indicate that the terminal device supports the capability of reporting the maximum power backoff management event based on power management when operating in the FR1 frequency band.

7. The communication method of claim 1, wherein, The fourth information comprises a preset capability parameter being a first value.

8. The communication method according to claim 1 or 2, wherein The first instruction further comprises second information, the second information being used to indicate a subframe in which the terminal device reports the maximum power backoff management event based on power management and a power threshold value triggering the reporting of the maximum power backoff management event based on power management.

9. The communication method according to claim 1 or 2, wherein The method further comprises: sending, to the terminal device, a first instruction containing fifth information, so as to report a power level change event when the terminal device works in the FR1 frequency range; the fifth information is used to set a second reporting parameter to a first value in the terminal device, so as to cause the terminal device to send sixth information to the network device when the terminal device works in the FR1 frequency range, the first reporting parameter is the second value, and the second reporting parameter is the first value; the sixth information is used to report the power level change event when the terminal device works in the FR1 frequency range; the first reporting parameter is used to set whether to report a maximum power backoff management event based on power management when the terminal device works in the FR1 frequency range; and the second value of the first reporting parameter is used to indicate that the terminal device does not report the maximum power backoff management event based on power management when the terminal device works in the FR1 frequency range. The second reporting parameter is used to set whether to report a power level change event when the terminal device works in the FR1 frequency range; and the first value of the second reporting parameter is used to indicate that the terminal device reports the power level change event when the terminal device works in the FR1 frequency range.

10. A communication method characterized by comprising: The communication method is performed by a terminal device, and the terminal device communicates with a network device, and the network device is used to perform the communication method according to any one of claims 1 to 9, and the communication method comprises: setting a first reporting parameter to a first value in response to a first instruction containing first information, so as to report a maximum power backoff management event based on power management when the terminal device works in the FR1 frequency range; the first information is used to set the terminal device to report the maximum power backoff management event based on power management when the terminal device works in the FR1 frequency range. When it is judged that the terminal device currently works in the FR1 frequency range and satisfies a first preset condition, performing the maximum power backoff management based on power management. Sending third information to the network device to report the maximum power backoff management event based on power management.

11. The communication method of claim 10, wherein, The first preset condition comprises that the first reporting parameter is the first value, the second reporting parameter is the second value, and the current transmission power is greater than a standard power; the first reporting parameter is used to set whether to report the maximum power backoff management event based on power management when the terminal device works in the FR1 frequency range; the first value of the first reporting parameter is used to indicate that the terminal device reports the maximum power backoff management event based on power management when the terminal device works in the FR1 frequency range; and the second reporting parameter is used to set whether to report a power level change event when the terminal device works in the FR1 frequency range; and the second value of the second reporting parameter is used to indicate that the terminal device does not report the power level change event when the terminal device works in the FR1 frequency range.

12. The communication method of claim 11, wherein, The first instruction further comprises second information for instructing the terminal device to report a subframe of the maximum power backoff management event based on power management, and a power threshold for triggering the reporting of the maximum power backoff management event based on power management, the first preset condition further comprises that the current power exceeds the power threshold, the sending of the third information to the network device comprises sending the third information in the subframe, the third information is located in the first two bits of the second row of the power headroom report MAC control element information, and the third information comprises a specific value of the maximum power backoff measured after the maximum power backoff management event based on power management.

13. The communication method of claim 10, wherein, Before responding to the first instruction, further comprising: sending, to the network device, a capability reporting message comprising fourth information to report a capability of the terminal device for reporting the maximum power backoff management event based on power management when operating in the FR1 frequency range.

14. The communication method of claim 13, wherein, The fourth information comprises a preset capability parameter being a first value.

15. The communication method of claim 10, wherein, Further comprising: in response to a first instruction comprising fifth information for setting a second reporting parameter to a first value, the fifth information is used to set a power level change event reported by the terminal device when operating in the FR1 frequency range; when it is determined that the current operating frequency range is the FR1 frequency range and a second preset condition is met, performing power level change; sending sixth information to the network device to report the power level change event.

16. The communication method of claim 15, wherein, The second preset condition comprises that the first reporting parameter is a second value, the second reporting parameter is a first value, and the current transmission power is greater than a standard power; wherein the first reporting parameter is used to set whether to report the maximum power backoff management event based on power management when operating in the FR1 frequency range, the second value of the first reporting parameter is used to indicate that the maximum power backoff management event based on power management is not reported when operating in the FR1 frequency range; the second reporting parameter is used to set whether to report the power level change event when operating in the FR1 frequency range, and the second value of the second reporting parameter is used to indicate that the power level change event is not reported when operating in the FR1 frequency range.

17. A communication device, characterized by The communication device is a network device, or the communication device is a terminal device, and the communication device comprises: a memory; and a processor coupled to the memory, the processor being configured to execute, based on instructions stored in the memory, the communication method performed by the network device according to any one of claims 1-9 when the communication device is a network device, or the communication method performed by the terminal device according to any one of claims 10-16 when the communication device is a terminal device.

18. A computer-readable storage medium, characterized in that, A program is stored thereon, which, when executed by a processor, implements the communication method performed by the network device according to any one of claims 1-9, or the communication method performed by the terminal device according to any one of claims 10-16.

19. A computer program product comprising a computer program, characterized in that, The computer program, when executed by a processor, implements the steps of the communication method performed by the network device according to any one of claims 1-9, or the steps of the communication method performed by the terminal device according to any one of claims 10-16.

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