Communication method, sensing method, and communication apparatus

Abstract

The present application provides a communication method, a sensing method, and a communication apparatus. The communication method comprises: in response to a trigger event, sending power headroom information, the power headroom information comprising power headroom used by a terminal device for sensing. The solution provided by the present application can implement power headroom reporting in sensing scenarios.

Description

Communication method, sensing method and communication device

[0001] The present application claims priority to the Chinese patent application No. 202410825760.X, filed on June 24, 2024, and entitled "Communication method, sensing method and communication device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, in particular to a communication method, a sensing method and a communication device. BACKGROUND

[0003] Integrated sensing and communication is considered as a technology with broad application prospects, and its business service range will break through the traditional communication dimension, and can provide sensing and communication services at the same time by using the same device. The sensing method applied to the communication device is expected to be applied to automatic driving, intrusion detection, safety production and many other fields, and has important research significance. SUMMARY

[0004] The present application provides a communication method, a sensing method and a communication device, which can realize power headroom reporting of a terminal device in a sensing scene, thereby facilitating the network side to adjust the strategy of the terminal device sending a sensing signal, and being beneficial to improving the performance of sensing.

[0005] In a first aspect, an embodiment of the present application provides a communication method, comprising: in response to a trigger event, sending power headroom information, wherein the power headroom information comprises power headroom of a terminal device for sensing.

[0006] Optionally, the trigger event comprises at least one of the following: PHR prohibit timer has expired or has expired, and signal quality of a first signal is deteriorated; PHR prohibit timer has expired or has expired, and accuracy of a sensing result is less than or equal to a first threshold; PHR prohibit timer has expired or has expired, and the sensing result is not obtained; PHR prohibit timer has expired or has expired, and the sensing result is obtained; PHR prohibit timer has expired or has expired, and a change value of the sensing result is less than or equal to a second threshold; switching from a bandwidth resource used for sensing to a bandwidth resource used for communication; switching from a bandwidth resource used for communication to a bandwidth resource used for sensing; wherein the first signal is a sensing signal, or the first signal is a back echo signal of the sensing signal.

[0007] Optionally, the signal quality of the first signal being deteriorated comprises at least one of the following: the signal quality of the first signal is less than or equal to a third threshold; a change value of the signal quality of the first signal is less than or equal to a fourth threshold; a maximum value of the signal quality of the first signal is less than or equal to a fifth threshold.

[0008] Optionally, the power margin for sensing is a difference between a maximum transmission power of the terminal device and a transmission power of the sensing signal.

[0009] Optionally, the power margin for sensing includes a power margin corresponding to each sensing beam used for transmitting the sensing signal, or a power margin corresponding to each sensing target, or a power margin corresponding to each transmission and reception point (TRP) used for receiving the sensing signal.

[0010] In a second aspect, an embodiment of the present application provides a communication method, which includes: receiving power margin information, the power margin information including a power margin for sensing of a terminal device.

[0011] Optionally, the power margin information is transmitted in at least one of the following cases: a PHR prohibit timer has expired or has expired, and a signal quality of a first signal is poor; the PHR prohibit timer has expired or has expired, and an accuracy of a sensing result is less than or equal to a first threshold; the PHR prohibit timer has expired or has expired, and the sensing result is not obtained; the PHR prohibit timer has expired or has expired, and the sensing result is obtained; the PHR prohibit timer has expired or has expired, and a change value of the sensing result is less than or equal to a second threshold; switching from bandwidth resources for sensing to bandwidth resources for communication; switching from the bandwidth resources for communication to the bandwidth resources for sensing; wherein the first signal is a sensing signal, or the first signal is a back echo signal of the sensing signal.

[0012] Optionally, the signal quality of the first signal being poor includes at least one of the following: the signal quality of the first signal is less than or equal to a third threshold; a change value of the signal quality of the first signal is less than or equal to a fourth threshold; a maximum value of the signal quality of the first signal is less than or equal to a fifth threshold.

[0013] Optionally, the power margin for sensing is a difference between a maximum transmission power of the terminal device and a transmission power of the sensing signal.

[0014] Optionally, the power margin for sensing includes a power margin corresponding to each sensing beam used for transmitting the sensing signal, or a power margin corresponding to each sensing target, or a power margin corresponding to each transmission and reception point (TRP) used for receiving the sensing signal.

[0015] In a third aspect, an embodiment of the present application provides a communication method, which includes: receiving configuration information, the configuration information including a closed-loop index for sensing.

[0016] In a fourth aspect, an embodiment of the present application provides a communication method, the method comprising: sending configuration information, the configuration information comprising a closed loop index for sensing.

[0017] In a fifth aspect, an embodiment of the present application provides a sensing method, the method comprising: in response to switching of a sensing task, setting a transmission power control (TPC) parameter or a transmission power of a sensing signal to a default value.

[0018] Optionally, the switching of the sensing task comprises at least one of: switching of a sensing beam; switching of a sensing resource set; and switching of a sensing resource.

[0019] In a sixth aspect, an embodiment of the present application provides a communication apparatus, the apparatus comprising: a sending module configured to send power headroom information in response to a triggering event, the power headroom information comprising power headroom of a terminal device for sensing.

[0020] In a seventh aspect, an embodiment of the present application provides a communication apparatus, the apparatus comprising: a receiving module configured to receive power headroom information, the power headroom information comprising power headroom of a terminal device for sensing.

[0021] In an eighth aspect, an embodiment of the present application provides a communication apparatus, the apparatus comprising: a receiving module configured to receive configuration information, the configuration information comprising a closed loop index for sensing.

[0022] In a ninth aspect, an embodiment of the present application provides a communication apparatus, the apparatus comprising: a sending module configured to send configuration information, the configuration information comprising a closed loop index for sensing.

[0023] In a tenth aspect, an embodiment of the present application provides a communication apparatus, the apparatus comprising: a processing module configured to set a transmission power control (TPC) parameter or a transmission power of a sensing signal to a default value in response to switching of a sensing task.

[0024] In an eleventh aspect, an embodiment of the present application provides a computer readable storage medium, having stored thereon a computer program, the computer program being run on a processor to cause the method of any one of the first aspect to the fifth aspect to be performed.

[0025] In a twelfth aspect, an embodiment of the present application provides a computer program product, comprising computer programs / instructions, the computer programs / instructions being executed on a processor to implement the steps of the method of any one of the first aspect to the fifth aspect.

[0026] In a thirteenth aspect, an embodiment of the present application further provides a communication apparatus, including a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes steps of the method provided in the first aspect or the third aspect or the fifth aspect when running the computer program.

[0027] In a fourteenth aspect, an embodiment of the present application further provides a communication apparatus, including a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes steps of the method provided in the second aspect or the fourth aspect when running the computer program.

[0028] In a fifteenth aspect, an embodiment of the present application provides a chip (or a communication apparatus), wherein the chip stores a computer program, and the computer program is executed by the chip to cause the method provided in any one of the first aspect to the fifth aspect to be executed.

[0029] In a sixteenth aspect, an embodiment of the present application provides a chip module, wherein the chip module stores a computer program, and the computer program is executed by the chip module to cause the method provided in any one of the first aspect to the fifth aspect to be executed.

[0030] In a seventeenth aspect, an embodiment of the present application provides a communication system, including an apparatus for executing the method provided in the first aspect or the third aspect or the fifth aspect, and an apparatus for executing the method provided in the second aspect or the fourth aspect.

[0031] Compared with the prior art, the technical scheme of the embodiment of the present application has the following beneficial effects:

[0032] In the scheme of the embodiment of the present application, the terminal device sends power headroom information to the network device in response to a trigger event, and the power headroom information includes power headroom used for sensing. That is, in the case of detecting a trigger event, the terminal device reports power headroom used for sensing to the network device, so that the network device can adjust the strategy of the terminal device for sending a sensing signal according to the power headroom used for sensing, which is beneficial to improving the performance of sensing.

[0033] In the scheme of the embodiment of the present application, the network device sends configuration information to the terminal device, and the configuration information includes a closed loop index used for sensing. Specifically, the network device can configure the closed loop index used for sensing to the terminal device. In the case of sensing by the terminal device, the terminal device can perform power control by using the closed loop index used for sensing. In the above scheme, the network device allocates an applicable closed loop index for a sensing scenario, which is beneficial to improving the accuracy of power control of the terminal device in sensing, so that the transmission power of the sensing signal can enable accurate sensing by the terminal device.

[0034] In the scheme of the embodiments of the present application, in response to switching of the sensing task, the terminal device sets the TPC parameter or the transmission power of the sensing signal to a default value. That is, the terminal device sets the TPC parameter or the transmission power of the sensing signal to the default value when completing the current sensing task and performing the next new sensing task. In the above scheme, the terminal device independently performs power control for each sensing task, rather than continuing to perform power control on the basis of the power control of the previous sensing task, which is beneficial to improving the accuracy of power control in the sensing scenario, thereby being beneficial to improving the accuracy of each sensing task. BRIEF DESCRIPTION OF DRAWINGS

[0035] FIG. 1 is a signaling interaction diagram of a communication method in the embodiments of the present application;

[0036] FIG. 2 is a schematic diagram of an application scenario of a communication method in the embodiments of the present application;

[0037] FIG. 3 is a schematic diagram of an application scenario of another communication method in the embodiments of the present application;

[0038] FIG. 4 is a signaling interaction diagram of another communication method in the embodiments of the present application;

[0039] FIG. 5 is a flow diagram of a sensing method in the embodiments of the present application;

[0040] FIG. 6 is a structural diagram of a communication device in the embodiments of the present application;

[0041] FIG. 7 is a structural diagram of another communication device in the embodiments of the present application;

[0042] FIG. 8 is a hardware architecture diagram of a communication device in the embodiments of the present application. DETAILED DESCRIPTION

[0043] The communication system to which the embodiments of the present application are applicable includes but is not limited to a long term evolution (LTE) system, a 5th-generation (5G) system (such as a New Radio (NR) system), and a future evolution system or a plurality of communication fusion systems. Among them, the 5G system can be a non-standalone (NSA) 5G system or a standalone (SA) 5G system. The scheme of the embodiments of the present application is also applicable to future new communication systems, for example, a 6th-generation (6G) communication system, a 7th-generation (7G) communication system, etc.

[0044] This application primarily relates to communication between terminal equipment (or simply terminal) and network equipment. In the embodiments of this application, the terminal equipment can refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless communication equipment, user agent, or user device. The terminal can also be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, a terminal in a future 5G network, or a terminal in a future evolved Public Land Mobile Network (PLMN), etc. This application does not limit the scope of the terminal equipment. In some embodiments of this application, the terminal equipment can be an electronic device with wireless data transmission capabilities. In other embodiments of this application, the terminal device may also be a device with transceiver functions, such as a chip system. The chip system may include chips, and may also include other discrete components.

[0045] In this application embodiment, the network device can refer to a device that provides wireless communication functions for a terminal device. The network device can be called an access network device, such as a radio access network (RAN) device or an access network element. The network device can support at least one wireless communication technology, such as LTE or NR. For example, the network device can be a base station (BS) (also called base station equipment), a base transceiver station (BTS), or a node (Node B).

[0046] B), evolved NodeB (eNB), a device providing base station functions in a 5G network, such as a next generation node (gNB) and a continuously evolved NodeB (ng-eNB), wherein the gNB and the terminal device communicate with each other using NR technology, the ng-eNB and the terminal device communicate with each other using evolved universal terrestrial radio access (E-UTRA) technology, and the gNB and the ng-eNB can be connected to a 5G core network. In a wireless local area network (WLAN), a device providing base station functions is an access point (AP). The network device in the embodiments of the present application also includes devices providing wireless communication functions in future new communication systems, etc. In some embodiments, the network device can also be a device with a wireless communication function for the terminal device, such as a chip system. For example, the chip system can include a chip and can also include other discrete devices.

[0047] In some embodiments, the network device can refer to a centralized unit (CU) of a base station, or a distributed unit (DU) of a base station, or a CU control plane (CU-CP) of a base station, or a DU user plane (cu-up) of a base station, etc.

[0048] It should be noted that the terminal device in the embodiments of the present application is a device with sensing capability. That is, the terminal device in the embodiments of the present application can perform sensing signal transmission and / or sensing information processing. The embodiments of the present application do not limit whether the network device has sensing capability or not. The network device can have sensing capability or not.

[0049] The embodiment of the present application provides a communication method, in the scheme of the embodiment of the present application, in response to a trigger event, a terminal device sends power headroom information to a network device, and the power headroom information comprises power headroom used for sensing by the terminal device. That is, in the case of detecting a trigger event, the terminal device reports the power headroom used for sensing to the network device, so that the network device can adjust the strategy of the terminal device for sending a sensing signal according to the power headroom used for sensing, and the performance of sensing is improved. The specific embodiments of the present application will be described in detail below with reference to the drawings. The actions performed by the terminal device in the following embodiments can be performed by the terminal device, a module (such as a processor, a chip) in the terminal device, a chip, and the like, and the actions performed by the network device can be performed by the network device, a module (such as a processor, a chip) in the network device, a chip, and the like, and the present application does not make any limitation. In order to facilitate the description, the embodiments provided by the present application are described taking the terminal device and the network device as examples.

[0050] Embodiment one

[0051] Referring to FIG. 1, FIG. 1 is a signaling interaction schematic diagram of a communication method in the embodiment of the present application. The communication method shown in FIG. 1 can comprise S11. In the present application, S in the step number of each step indicates a step.

[0052] S11, in response to a trigger event, a terminal device sends power headroom information to a network device, and the power headroom information comprises power headroom used for sensing by the terminal device. Correspondingly, the network device receives the power headroom information.

[0053] In a specific implementation, the terminal device can detect a trigger event, if the terminal device detects the trigger event, the terminal device sends power headroom information to the network device, and the power headroom information comprises power headroom used for sensing by the terminal device, so that the network device knows the power headroom used for sensing by the terminal device. Wherein, the trigger event can be defined by a protocol, or the trigger event can be configured by the network device.

[0054] In some examples, the trigger event can be related to a power headroom report (PHR) prohibit timer, but is not limited thereto.

[0055] In a possible implementation, the trigger event can comprise at least one of the following events (1) to (7):

[0056] Event (1): the PHR prohibit timer is timed out or has been timed out, and the signal quality of the first signal is deteriorated. Wherein, the first signal can refer to a sensing signal, or the first signal can refer to a back echo signal of the sensing signal.

[0057] Specifically, if the terminal device detects that the PHR prohibit timer expires or has expired, and the signal quality of the first signal deteriorates, it can be determined that event (1) is detected.

[0058] It should be noted that the "perception signal" in this document can refer to a reference signal for perception. The perception signal can also be referred to as a perception reference signal, etc. The perception signal can be a signal dedicated to perception, or can be a signal that can be used for both perception and communication.

[0059] For example, the perception signal can be a defined reference signal, such as a channel state information reference signal (CSI-RS), a synchronizing signal / PBCH block (SSB), a positioning reference signal (PRS), a sounding reference signal (SRS), or an SRS for positioning, etc. Alternatively, the perception signal can also be a reference signal newly defined in the future in the evolution process of the communication standard, and the present embodiment does not limit this.

[0060] It should also be noted that the echo signal can be a signal formed when the perception signal sent by the terminal device hits the perception target.

[0061] In a specific implementation, the deterioration of the signal quality of the first signal can include at least one of the following: the signal quality of the first signal is less than or equal to a third threshold, a change value of the signal quality of the first signal is less than or equal to a fourth threshold, and a maximum value of the signal quality of the first signal is less than or equal to a fifth threshold.

[0062] The change value of the signal quality of the first signal can refer to the difference between the signal quality obtained by measuring the first signal this time and the signal quality obtained by measuring the first signal last time.

[0063] In a possible implementation, the terminal device can use multiple perception beams to send perception signals for perception, that is, the terminal device sends multiple perception signals for perception. In this case, if the first signal refers to the perception signal, the maximum value of the signal quality of the first signal can refer to the maximum value of the signal quality of the multiple perception signals. If the first signal refers to the echo signal of the perception signal, the maximum value of the signal quality of the first signal can refer to the maximum value of the signal quality of the multiple echo signals.

[0064] It should be noted that the "signal quality" in this document can be at least one of the following: reference signal receiving power (RSRP), reference signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), signal to interference plus noise ratio (SINR), signal noise ratio (SNR), etc.

[0065] It should also be noted that the values of the various thresholds involved in this document are not limited, and the values of the various thresholds can be configured by the network device and / or can be defined by the protocol.

[0066] Event (2): the PHR prohibit timer is timed out or has been timed out, and the accuracy of the perception result is less than or equal to the first threshold.

[0067] Specifically, if the terminal device detects that the PHR prohibit timer is timed out or has been timed out, and the accuracy of the perception result is less than or equal to the first threshold, it can be determined that event (2) is detected.

[0068] The perception result can be information related to the perception task or the perception target. The perception target can also be referred to as a perception object, etc. The perception target can be an environment, an object, a person, etc. The perception result can include any one or more of the following: position, moving speed, gesture, environment map, object imaging, etc.

[0069] In one example, the perception result can be information obtained based on analysis of the perception data. The perception data can be information related to the perception reference signal. Specifically, the perception data can be information directly obtained based on measurement of the perception signal, or the perception data can be data obtained after some data processing based on measurement of the perception signal. For example, the perception data can include any one or more of the following: time of arrival in the perception signal, time difference of arrival of the perception signal, Doppler information of the perception signal, channel quality information corresponding to the perception signal, measurement time of the perception signal, specific reception information of the perception signal, etc.

[0070] Event (3): the PHR prohibit timer is timed out or has been timed out, and no perception result is obtained.

[0071] Specifically, if the PHR prohibit timer expires or has expired, and the terminal device has not obtained the latest sensing result, the terminal device can determine that event (3) is detected.

[0072] Event (4): the PHR prohibit timer expires or has expired, and the sensing result is obtained.

[0073] Specifically, if the PHR prohibit timer expires or has expired, and the terminal device obtains the sensing result based on the current measurement, the terminal device can determine that event (4) is detected.

[0074] Event (5): the PHR prohibit timer expires or has expired, and the change value of the sensing result is less than or equal to a second threshold.

[0075] Specifically, if the PHR prohibit timer expires or has expired, and the change value of the sensing result is less than or equal to a second threshold, the terminal device can determine that event (5) is detected. Wherein, the change value of the sensing result can refer to the difference between the change value of the sensing result obtained by the current measurement and the sensing result obtained by the last measurement.

[0076] Event (6): switching from a bandwidth resource (such as a BWP) used for sensing to a bandwidth resource (such as a BWP) used for communication.

[0077] Specifically, if the terminal device switches from a bandwidth resource used for sensing to a bandwidth resource used for communication, it can be determined that event (6) is detected. Wherein, the bandwidth resource used for sensing and the bandwidth resource used for communication can be configured by the network device.

[0078] Event (7): switching from a bandwidth resource (such as a BWP) used for communication to a bandwidth resource (such as a BWP) used for sensing.

[0079] Specifically, if the terminal device switches from a BWP used for communication to a BWP used for sensing, it can be determined that event (7) is detected.

[0080] From the above, in the case of triggering event, the terminal device reports the power margin used for sensing.

[0081] In the scheme of the embodiments of the present application, the "power margin for sensing" mentioned can be the difference between the maximum transmit power of the terminal device and the power of the sensing signal. It should be noted that the "maximum transmit power" herein can be the maximum transmit power of each carrier used by the terminal device for communication, or the "maximum transmit power" can be the maximum transmit power of each carrier used by the terminal device for sensing. Alternatively, the maximum transmit power of each carrier used by the terminal device for sensing can depend on at least one of the following: the radar cross-section (RCS) expected by the sensing target, the maximum detection distance of the terminal device, and the like.

[0082] In a possible implementation, the "power of the sensing signal" can be the "power of the currently transmitted sensing signal". That is, the "power margin for sensing" can be the difference between the maximum transmit power of the terminal device and the power of the currently transmitted sensing signal.

[0083] In another possible implementation, the "power of the sensing signal" can be the "power of the last transmitted sensing signal". That is, the "power margin for sensing" can be the difference between the maximum transmit power of the terminal device and the power of the last transmitted sensing signal.

[0084] In yet another possible implementation, the "power of the sensing signal" can be the "power of the virtually transmitted sensing signal". That is, the "power margin for sensing" can be the difference between the maximum transmit power of the terminal device and the power of the virtually transmitted sensing signal. The "power of the virtually transmitted sensing signal" can be that the network side configures some parameters for calculating the transmit power of the sensing signal, and the terminal device actually does not transmit the sensing signal, but can calculate the power of the virtually transmitted sensing signal through the parameters configured by the network side.

[0085] In a possible implementation, the power headroom for sensing can include a power headroom corresponding to each sensing beam. The sensing beam refers to a beam used for transmitting a sensing signal. Specifically, the terminal device can transmit a sensing signal using one or more sensing beams, in which case the terminal device can report to the network device a power headroom corresponding to each sensing beam. Specifically, the power headroom corresponding to the sensing beam can refer to a power headroom of the terminal device for transmitting a sensing signal using the sensing beam. Correspondingly, the power headroom information can include an index number of each sensing beam. The index number of the sensing beam can refer to an index number of a reference signal corresponding to the sensing beam. Specifically, the power headroom information can include an index number of at least one sensing beam and a power headroom corresponding to each sensing beam. In this way, the network device can obtain the power headroom corresponding to each sensing beam. For example, when reporting the power headroom, the index number of each beam is also required, so that the network side can know which beam direction the power headroom corresponds to.

[0086] In a scenario, the terminal device can use different sensing beams to transmit a sensing signal to sense multiple sensing targets. In this case, the terminal device can report to the network device a power headroom corresponding to each sensing beam.

[0087] Referring to FIG. 2, FIG. 2 is a schematic diagram of an application scenario of a communication method in an embodiment of the present application. In the scenario shown in FIG. 2, the terminal device transmits a sensing signal 1 to sense a sensing target 1, and transmits a sensing signal 2 to sense a sensing target 2. The sensing signal 1 is transmitted using a sensing beam 1, and the sensing signal 2 is transmitted using a sensing beam 2. The sensing signal 1 forms a backwave signal 1 after colliding with the sensing target 1, and the sensing signal 2 forms a backwave signal 2 after colliding with the sensing target 2. A transmit and receive point (TRP) receives the backwave signal 1 and the backwave signal 2, and obtains a sensing result of the sensing target 1 based on a measurement of the backwave signal 1, and obtains a sensing result of the sensing target 2 based on a measurement of the backwave signal 2.

[0088] In the scenario shown in FIG. 2, the terminal device can report to the network device a power headroom corresponding to the sensing beam 1 and a power headroom corresponding to the sensing beam 2.

[0089] In another scenario, the terminal device can use multiple sensing beams to sense the same sensing target, in which case the backwave signals of the sensing signals transmitted by different sensing beams are received by different TRPs. In this case, the terminal device can report to the network device a power headroom corresponding to each sensing beam.

[0090] Optionally, the power headroom is reported with an index of the corresponding TRP. Specifically, the power headroom information can include indexes of the TRPs. In other words, the power headroom information can include an index of at least one TRP and a corresponding power headroom of each TRP. In this way, the network device can learn the power headroom corresponding to each TRP.

[0091] In another scenario, the terminal device can report the power headroom corresponding to each target of listening. Optionally, the power headroom is reported with an index of the corresponding target.

[0092] Referring to FIG. 3, FIG. 3 is a schematic diagram of an application scenario of another communication method in the embodiments of the present application. The scenario shown in FIG. 3 is a scenario of multi-point cooperative sensing. Specifically, the terminal device transmits sensing signal 1 and sensing signal 2, the sensing signal 1 is a signal transmitted using sensing beam 1, and the sensing signal 2 is a signal transmitted using sensing beam 2. The sensing signal 1 hits the sensing target to form echo signal 1, and the sensing signal 2 hits the sensing target to form echo signal 2. TRP1 receives echo signal 1, and TRP2 receives echo signal 2. Based on the measurement result of echo signal 1 and the measurement result of echo signal 2, the sensing result of the sensing target can be obtained. In the scenario shown in FIG. 3, the terminal device can report the power headroom corresponding to the sensing beam 1 and the power headroom corresponding to the sensing beam 2 to the network device.

[0093] In another possible implementation, the power headroom for sensing can include the power headroom corresponding to each sensing target. Specifically, in the case that the terminal device performs sensing on multiple sensing targets, the terminal device can report the power headroom corresponding to each sensing target. The power headroom corresponding to each sensing target can refer to the power headroom used for sensing the sensing target. Optionally, the power headroom information can include indexes of the sensing targets. In other words, the power headroom information can include the power headroom corresponding to at least one sensing target and an index of each sensing target. In this way, the network device can learn the power headroom corresponding to each sensing target. For example, the terminal device can report the power headroom corresponding to each target of listening.

[0094] For example, in the scenario shown in FIG. 2, the terminal device can report the power headroom corresponding to the sensing target 1 and the power headroom corresponding to the sensing target 2 to the network device.

[0095] In another possible implementation, the power headroom for sensing can include the power headroom corresponding to each TRP, and the TRP is used to receive the sensing signal or the TRP is used to receive the echo signal of the sensing signal.

[0096] Specifically, in the scenario of multiple-TRP cooperative sensing, the terminal device transmits multiple sensing signals to sense a sensing target, and multiple TRPs receive echo signals of different sensing signals respectively. In this scenario, the power headroom for sensing can include a power headroom corresponding to each TRP. The power headroom corresponding to each TRP can refer to a power headroom of the terminal device transmitting a sensing signal received by the TRP, or the power headroom corresponding to each TRP can refer to a power headroom of the terminal device transmitting a sensing signal corresponding to an echo signal received by the TRP.

[0097] For example, in the scenario shown in FIG. 3, the terminal device can report the power headroom corresponding to TRP1 and the power headroom corresponding to TRP2 to the network device. Specifically, the power headroom corresponding to TRP1 can refer to a power headroom of the terminal device transmitting sensing signal 1, and the power headroom corresponding to TRP2 can refer to a power headroom of the terminal device transmitting sensing signal 2.

[0098] Optionally, the power headroom information can include an index number of each TRP. In other words, the power headroom information can include a power headroom corresponding to at least one TRP and an index number of each TRP. In this way, the network device can obtain the power headroom corresponding to each TRP.

[0099] Continuing to refer to FIG. 1, after receiving the power headroom information, the network device can perform scheduling according to the power headroom information.

[0100] In one example, the network device can adjust the number of resource blocks (RBs) in the sensing resource according to the power headroom information. Specifically, if the power headroom for sensing is less than or equal to a first power threshold, the network device can reduce the number of RBs in the sensing resource. If the power headroom for sensing is greater than or equal to a second power threshold, the network device can increase the number of RBs in the sensing resource. The first power threshold is less than or equal to the second power threshold. The first power threshold and the second power threshold can be defined by a protocol or can be configured by the network device.

[0101] In another example, the network device can instruct the terminal device to adjust the transmission power of the sensing signal according to the power headroom information. For example, in the case where the number of RBs in the sensing resource remains unchanged, the network device can instruct the terminal device to adjust the transmission power of the sensing signal according to the power headroom information. For example, if the power headroom for sensing is less than or equal to a first power threshold, the network device can instruct the terminal device to reduce the transmission power of the sensing signal. If the power headroom for sensing is greater than or equal to a second power threshold, the network device can instruct the terminal device to increase the transmission power of the sensing signal.

[0102] In yet another example, the network device can schedule the communication information and the sensing information in the same BWP to be transmitted in a frequency division multiplexing manner according to the power headroom information. Specifically, if the power headroom for sensing is less than or equal to the third power threshold, the network device can schedule the communication information and the sensing information in the same BWP to be transmitted simultaneously in a frequency division multiplexing manner.

[0103] From the above, in the scheme of the first embodiment, the terminal device reports the power headroom for sensing to the network device, so that the network device can schedule the terminal device to transmit the sensing signal according to the power headroom for sensing, which is beneficial to improve the performance of sensing.

[0104] Embodiment II

[0105] Referring to FIG. 4, FIG. 4 is a signaling interaction diagram of another communication method in the embodiments of the present application. The communication method shown in FIG. 4 can include S41.

[0106] S41, the network device sends configuration information to the terminal device, and the configuration information includes a closed loop index for sensing. Correspondingly, the terminal device receives the configuration information.

[0107] In the scheme of the second embodiment, the network device can configure the terminal device with the closed loop index for sensing. In the case that the terminal device performs sensing, the terminal device can perform power control using the closed loop index for sensing. Alternatively, the closed loop index for sensing can be determined in a predefined manner.

[0108] In specific implementation, the configuration information can be carried in high layer signaling, for example, the configuration information can be carried in downlink control information (DCI) signaling, but is not limited thereto.

[0109] In a possible implementation, the network device can configure the terminal device with the closed loop index for sensing and the closed loop index for communication. The closed loop index for sensing can be different from the closed loop index for communication. For example, the closed loop index for communication can be 0 or 1, and the closed loop index for sensing can be 2.

[0110] In a possible implementation, the number of closed loop indexes for sensing can be multiple.

[0111] In an example, the network device can configure different closed loop indexes for different sensing targets respectively. Specifically, the closed loop indexes for sensing can include one or more closed loop indexes corresponding to the sensing targets, where each closed loop index corresponding to a sensing target can be used for power control when the terminal device senses the sensing target. For example, the terminal device can sense the moving speed of the sensing target 1 and the sensing target 2, where the distance between the terminal device and the sensing target 1 and the distance between the terminal device and the sensing target 2 are different. In this case, the closed loop index corresponding to the sensing target 1 and the closed loop index corresponding to the sensing target 2 can be different. With such a scheme, the accuracy of power control when the terminal device senses can be improved, so as to ensure that the transmission power of the sensing signal can achieve accurate sensing of the sensing target.

[0112] In another example, the network device can configure different closed loop indexes for different sensing directions respectively. It should be noted that the "sensing direction" herein can refer to the "beam direction of the sensing beam" or can refer to the "sensing beam". It should be further noted that the "sensing beam" herein refers to the beam used for transmitting the sensing signal.

[0113] Specifically, the closed loop indexes for sensing can include one or more closed loop indexes corresponding to the sensing directions, where each closed loop index corresponding to a sensing direction can be used for power control when the terminal device senses in the sensing direction. For example, the terminal device senses in the sensing direction 1 and the sensing direction 2, where the closed loop index corresponding to the sensing direction 1 and the closed loop index corresponding to the sensing direction 2 can be different. With such a scheme, the accuracy of power control when the terminal device senses can be improved, so as to enable the transmission power of the sensing signal to enable the terminal device to accurately sense in each sensing direction.

[0114] From the above, in the scheme of embodiment two, the network device assigns the applicable closed loop index for the sensing scenario, which helps to improve the accuracy of power control when the terminal device senses, so as to enable the transmission power of the sensing signal to enable the terminal device to accurately sense.

[0115] Embodiment three

[0116] Referring to FIG. 5, FIG. 5 is a flow diagram of a sensing method in an embodiment of the present application. The method shown in FIG. 5 can be applied to a terminal device. For example, the method shown in FIG. 5 can be executed by a terminal device, or can also be executed by a chip or chip module with communication function and / or sensing function in the terminal device. The communication method shown in FIG. 5 can include S51.

[0117] S51, in response to switching of the sensing task, setting the TPC parameter or the transmission power of the sensing signal to a default value.

[0118] In a specific implementation, the terminal device performing a sensing task can be understood as the terminal device sensing a sensing target. The switching of the sensing task can be initiated by the terminal device actively. Alternatively, the network device can instruct the terminal device to switch the sensing task.

[0119] In a possible implementation, the switching of the sensing task can be represented by the switching of a sensing beam. In a specific implementation, the switching of the sensing beam can be initiated by the terminal device actively, or the network device can instruct the terminal device to switch the sensing beam, thereby instructing the terminal device to switch the sensing task. If the terminal device determines that the sensing beam is switched, it can be determined that the sensing task is switched.

[0120] In another possible implementation, the switching of the sensing task can be represented by the switching of a sensing resource set. The sensing resource set can refer to a set of resources for sensing. Specifically, each sensing resource set can include one or more sensing resources, and a sensing resource refers to a resource for sensing. In a specific implementation, the switching of the sensing resource set can be initiated by the terminal device actively, or the network device can instruct the terminal device to switch the sensing resource set, thereby instructing the terminal device to switch the sensing task. If the terminal device determines that the sensing resource set is switched, it can be determined that the sensing task is switched.

[0121] In yet another possible implementation, the switching of the sensing task can be represented by the switching of a sensing resource or a sensing resource set. In a specific implementation, the switching of the sensing resource or the sensing resource set can be initiated by the terminal device actively, or the network device can instruct the terminal device to switch the sensing resource or the sensing resource set, thereby instructing the terminal device to switch the sensing task. If the terminal device determines that the sensing resource or the sensing resource set is switched, it can be determined that the sensing task is switched.

[0122] In an example, if the terminal device determines that the sensing task is switched, the terminal device can set a Transmission Power Control (TPC) parameter to a default value. The TPC parameter can refer to a power control adjustment value, and the terminal device can determine the transmission power of a sensing signal when performing a next sensing task according to the power control adjustment value and the transmission power of the sensing signal when performing a current sensing task. The TPC parameter can refer to a parameter corresponding to a TPC command or a TPC field, which represents the value of the power adjustment by the network side through dynamic signaling.

[0123] In a specific implementation, the default value can be defined by a protocol or configured by a network device, and the embodiment does not limit the specific value of the default value. For example, the default value can be any of the following: 0, a maximum value of the TPC parameter, a maximum transmission power of the terminal device. The maximum value of the TPC parameter can be defined by a protocol or configured by a network device.

[0124] It should be noted that the maximum transmission power of the terminal device can refer to the related description in Embodiment One above, which will not be repeated here.

[0125] In another example, if the terminal device determines to switch the sensing task, the terminal device can set the transmission power of the sensing signal to a default value. The default value can be defined by a protocol or configured by a network device, and the embodiment does not limit the specific value of the default value. For example, the default value can be the maximum transmission power of the terminal device.

[0126] From the above, in the scheme of Embodiment Three, the terminal device sets the TPC parameter or the transmission power of the sensing signal to a default value when completing the current sensing task and performing the next new sensing task. In the above scheme, power control is independently performed for each sensing task, rather than continuing power control on the basis of power control of the previous sensing task, which is beneficial to improve the accuracy of power control in a sensing scenario, thereby improving the accuracy of each sensing task.

[0127] It can be understood that in a specific implementation, the above method can be implemented in the form of a software program running in a processor integrated in a chip or a chip module; or the method can be implemented in a hardware or a combination of software and hardware, for example, implemented by a dedicated chip or a chip module, or implemented by a dedicated chip or a chip module combined with a software program.

[0128] Referring to FIG. 6, FIG. 6 is a structural schematic diagram of a communication apparatus in an embodiment of the present application. The communication apparatus shown in FIG. 6 can be deployed in a terminal device. The apparatus shown in FIG. 6 can include:

[0129] The sending module 61 is configured to send power headroom information in response to a triggering event, wherein the power headroom information includes power headroom of the terminal device for sensing.

[0130] Alternatively, the apparatus shown in FIG. 6 can include a receiving module configured to receive configuration information, wherein the configuration information includes a closed loop index for sensing.

[0131] Alternatively, the apparatus shown in FIG. 6 can include a processing module configured to set a transmission power control (TPC) parameter or a transmission power of a sensing signal to a default value in response to switching of a sensing task.

[0132] In specific implementation, the communication apparatus shown in FIG. 6 can correspond to a chip with a communication function in a terminal device; or correspond to a chip or a chip module with a communication function included in the terminal device, or correspond to the terminal device.

[0133] Referring to FIG. 7, FIG. 7 is a structural schematic diagram of another communication apparatus in the embodiments of the present application, and the communication apparatus shown in FIG. 7 can be deployed in a network device. The apparatus shown in FIG. 7 can include:

[0134] The receiving module 71 is configured to receive power headroom information, wherein the power headroom information includes power headroom for sensing by the terminal device.

[0135] Alternatively, the apparatus shown in FIG. 7 can include a sending module configured to send configuration information, wherein the configuration information includes a closed-loop index for sensing.

[0136] In specific implementation, the communication apparatus shown in FIG. 7 can correspond to a chip with a communication function in a network device; or correspond to a chip or a chip module with a communication function included in the network device, or correspond to the network device.

[0137] For more information about the working principle, working method and advantages of the communication apparatus in the embodiments of the present application, reference can be made to the related description of the communication method above, which will not be repeated here.

[0138] It should be noted that the sending module in the present document can be a communication interface, a transceiver, etc. The receiving module in the present document can be a communication interface, a transceiver, etc.

[0139] The embodiments of the present application further provide a computer readable storage medium, which stores a computer program. When the computer program is run by a computer, the communication method or the sensing method described above is executed. The storage medium can include a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. The storage medium can also include a non-volatile memory or a non-transitory memory, etc.

[0140] The embodiments of the present application further provide a computer program product, which includes computer programs / instructions. When the computer programs / instructions are executed by a processor, the steps of the communication method or the sensing method described above are implemented.

[0141] The embodiment of the present application further provides a communication device, comprising a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps of the perception method when running the computer program. The communication device can be the network device or the terminal device.

[0142] Referring to FIG. 8, FIG. 8 is a schematic diagram of the hardware structure of a communication device according to an embodiment of the present application. The communication device shown in FIG. 8 can be the terminal device or the network device. The communication device shown in FIG. 8 comprises a memory 81, a processor 82 and a transceiver 83, wherein the processor 82 and the memory 81, the transceiver 83 are coupled, and the memory 81 can be located in the communication device or outside the communication device. The memory 81, the processor 82 and the transceiver 83 can be connected through a communication bus. The transceiver 83 is configured to communicate with other devices. The memory 81 stores a computer program capable of running on the processor 82, and the processor 82 executes the steps of the method provided by the above embodiment when running the computer program, and / or the transceiver 83 executes the steps of the method provided by the above embodiment when the processor 82 runs the computer program.

[0143] It should be understood that, in the embodiment of the present application, the processor can be a central processing unit (CPU), and the processor can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0144] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a ROM, a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM can be used, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0145] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer program can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired or wireless means.

[0146] It should be understood that in various embodiments of the present application, the size of the sequence number of each process described above does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0147] In several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other manners. For example, the described device embodiments are merely illustrative; the division of the units is merely logical function division; and there can be another division manner in actual implementation; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, or the among different units, can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0148] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0149] In addition, each functional unit in the embodiments of the present application can be integrated in a processing unit, or each unit can be a separate physical unit, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware, or in the form of hardware plus software function units. For example, for each device or product applied to or integrated in a chip, each module / unit contained therein can be implemented in the form of a circuit or other hardware, or at least part of the modules / units can be implemented in the form of a software program running on a processor integrated in the chip, and the remaining (if any) part of the modules / units can be implemented in the form of a circuit or other hardware; for each device or product applied to or integrated in a chip module, each module / unit contained therein can be implemented in the form of a circuit or other hardware, and different modules / units can be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least part of the modules / units can be implemented in the form of a software program running on a processor integrated in the chip module, and the remaining (if any) part of the modules / units can be implemented in the form of a circuit or other hardware; for each device or product applied to or integrated in a terminal, each module / unit contained therein can be implemented in the form of a circuit or other hardware, and different modules / units can be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the terminal, or at least part of the modules / units can be implemented in the form of a software program running on a processor integrated in the terminal, and the remaining (if any) part of the modules / units can be implemented in the form of a circuit or other hardware.

[0150] The integrated unit in the form of software function unit can be stored in a computer readable storage medium. The software function unit is stored in a storage medium, and includes instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method according to the embodiments of the present application. The storage medium includes a U disk, a mobile hard disk, a ROM, a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0151] It should be understood that the term "and / or" herein is only used to describe the association relationship of the associated objects, and can represent three relationships, for example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " herein represents an "or" relationship between the associated objects before and after it.

[0152] "Multiple" appearing in the embodiments of the present application means two or more.

[0153] In the present application, "equal to" can be used with "less than" or "greater than", but not at the same time with "less than" and "greater than". When "equal to" is used with "less than", it is applicable to the technical solutions adopted by "less than". When "equal to" is used with "greater than", it is applicable to the technical solutions adopted by "greater than".

[0154] The first, second, and the like appearing in the embodiments of the present application are only used for description and distinction of the description objects, and do not have order, nor represent special limitation of the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0155] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and therefore the protection scope of the present application should be subject to the scope defined by the claims.

Claims

1. A communication method characterized by comprising: The method comprises: sending power headroom information in response to a triggering event, the power headroom information comprising a power headroom used for sensing by the terminal device.

2. The communication method according to claim 1, characterized by, The triggering event comprises at least one of: a PHR prohibit timer expires or has expired, and signal quality of a first signal is deteriorated; a PHR prohibit timer expires or has expired, and accuracy of a sensing result is less than or equal to a first threshold value; a PHR prohibit timer expires or has expired, and no sensing result is obtained; a PHR prohibit timer expires or has expired, and a sensing result is obtained; a PHR prohibit timer expires or has expired, and a change value of a sensing result is less than or equal to a second threshold value; switching from a bandwidth resource used for sensing to a bandwidth resource used for communication; switching from a bandwidth resource used for communication to a bandwidth resource used for sensing; wherein the first signal is a sensing signal, or the first signal is a back echo signal of the sensing signal.

3. The communication method according to claim 2, wherein, The deterioration of the signal quality of the first signal comprises at least one of: the signal quality of the first signal is less than or equal to a third threshold value; a change value of the signal quality of the first signal is less than or equal to a fourth threshold value; a maximum value of the signal quality of the first signal is less than or equal to a fifth threshold value.

4. The communication method according to claim 1, characterized by, The power headroom used for sensing is a difference between a maximum transmission power of the terminal device and a transmission power of a sensing signal.

5. The communication method of claim 1, wherein, The power headroom used for sensing comprises a power headroom corresponding to each sensing beam used for transmitting a sensing signal; or, the power headroom used for sensing comprises a power headroom corresponding to each sensing target; or, the power headroom used for sensing comprises a power headroom corresponding to each transmission reception point (TRP) used for receiving a sensing signal.

6. A communication method characterized by comprising: The method comprises: receiving power headroom information, the power headroom information comprising a power headroom used for sensing by the terminal device.

7. The communication method according to claim 6, wherein, The power headroom information is sent in at least one of the following cases: a PHR prohibit timer expires or has expired, and signal quality of a first signal is deteriorated; a PHR prohibit timer expires or has expired, and accuracy of a sensing result is less than or equal to a first threshold value; a PHR prohibit timer expires or has expired, and no sensing result is obtained; a PHR prohibit timer expires or has expired, and a sensing result is obtained; a PHR prohibit timer expires or has expired, and a change value of a sensing result is less than or equal to a second threshold value; switching from a bandwidth resource used for sensing to a bandwidth resource used for communication; switching from a bandwidth resource used for communication to a bandwidth resource used for sensing; wherein the first signal is a sensing signal, or the first signal is a back echo signal of the sensing signal.

8. The communication method according to claim 7, wherein, The deterioration of the signal quality of the first signal comprises at least one of: the signal quality of the first signal is less than or equal to a third threshold value; a change value of the signal quality of the first signal is less than or equal to a fourth threshold value; a maximum value of the signal quality of the first signal is less than or equal to a fifth threshold value.

9. The communication method according to claim 6, wherein, The power headroom used for sensing is a difference between a maximum transmission power of the terminal device and a transmission power of a sensing signal.

10. The communication method according to claim 6, wherein, The power headroom for sensing includes a power headroom corresponding to each sensing beam used for transmitting a sensing signal. Alternatively, the power headroom for sensing includes a power headroom corresponding to each sensing target. Alternatively, the power headroom for sensing includes a power headroom corresponding to each transmission reception point (TRP) used for receiving a sensing signal.

11. A communication method, comprising: The method includes: receiving configuration information including a closed loop index for sensing.

12. A communication method characterized by comprising: The method includes: sending configuration information including a closed loop index for sensing.

13. A perception method comprising: The method includes: in response to switching of a sensing task, setting a transmission power control (TPC) parameter or a transmission power of a sensing signal to a default value.

14. The perception method of claim 13, wherein, The switching of the sensing task includes at least one of: switching of a sensing beam; switching of a sensing resource set; switching of a sensing resource.

15. A communications device, characterized by The apparatus includes: a sending module configured to send, in response to a triggering event, power headroom information including a power headroom for sensing by a terminal device.

16. A communications device, characterized by The apparatus includes: a receiving module configured to receive power headroom information including a power headroom for sensing by a terminal device.

17. A communications device, characterized by The apparatus includes: a receiving module configured to receive configuration information including a closed loop index for sensing.

18. A communications device, characterized by The apparatus includes: a sending module configured to send configuration information including a closed loop index for sensing.

19. A communications device, characterized by The apparatus includes: a processing module configured to, in response to switching of a sensing task, set a transmission power control (TPC) parameter or a transmission power of a sensing signal to a default value.

20. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by a processor, causes the communication method of any one of claims 1 to 12 or the sensing method of claim 13 or 14 to be performed.

21. A computer program product comprising computer programs / instructions, characterized in that, The computer program / instructions, when executed by a processor, implement the steps of the method of any one of claims 1 to 14.

22. A communication device comprising a memory and a processor, said memory having stored thereon a computer program that is operable to run on said processor, characterized in that, The processor, when executing the computer program, performs the steps of the communication method of any one of claims 1 to 5 or the communication method of claim 11 or the sensing method of claim 13 or 14.

23. A communication device comprising a memory and a processor, said memory having stored thereon a computer program that is operable to run on said processor, characterized in that, The processor, when executing the computer program, performs the steps of the communication method of any one of claims 6 to 10 or the communication method of claim 12.

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