Communication method and communication apparatus

Abstract

The present application relates to the technical field of communications. Provided are a communication method and a communication apparatus. The method comprises: receiving a sensing signal; and sending first information on the basis of the sensing signal, the first information comprising power values of Q position groups and a group of power adjustment values corresponding to each position group among the Q position groups, each position group comprising a plurality of position points, the plurality of position points comprised in each position group being spatially adjacent, and Q being an integer greater than zero. By dividing a sensing area into position groups and position points, the present application reports power values on the basis of the position groups, and reports the power adjustment values on the basis of the position points in the position groups, thereby facilitating reduction of reporting overhead of sensing data.

Description

Communication method and communication apparatus

[0001] This application claims priority from the Chinese patent application No. 202410718295.X filed on June 04, 2024, and entitled "Communication method and communication apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

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

[0003] With the development of network technology, a base station can utilize a communication signal to realize sensing functions such as detection, positioning, identification and imaging of a target object. A wireless communication system composed of a base station and a terminal device, or a base station and a base station, can utilize the sensing functions to obtain surrounding environment information, intelligently and accurately allocate communication resources, tap potential communication capabilities, and enhance user experience.

[0004] In the process of 5G to 5G-Advanced (5G-A) and future communication technology evolution, communication and perception integrated technology is considered one of the key technologies that can expand the business capabilities of mobile communication networks. The core idea of this technology is to add sensing capabilities on the mobile communication network to build the ability to detect, track and image targets, so that wireless communication and wireless sensing, two independent functions, are implemented in the same system and mutually beneficial. On the one hand, the communication system can use the same spectrum or even reuse hardware or signal processing modules to complete different types of sensing services. On the other hand, the sensing results can be used to assist communication access or management to improve service quality and communication efficiency.

[0005] Taking a perception system composed of a base station and a terminal device as an example, the base station transmits a perception signal, the terminal reports perception data based on the perception signal, and the base station determines a perception result based on the perception data reported by the terminal. The perception data can include power values of all position points in a perception space, which can be obtained by grid partitioning the perception space. When reporting the power values of all position points, the power value of each position point is directly reported without processing, for example, the perception space includes 10 position points, and the power values of the 10 position points are 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8 and 10.9. When reporting, it is reported in the form of 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8 and 10.9. The power value of each position point needs to be quantized using multiple bits, which may result in a bit quantity exceeding gigabit (Gigabit) that needs to be reported, causing high communication overhead. SUMMARY

[0006] The application provides a communication method and a communication device, which are beneficial to reducing the reporting overhead of sensing data.

[0007] In a first aspect, the application provides a communication method applied to a first device, the method comprising: receiving a sensing signal; and sending first information based on the sensing signal, the first information comprising power values of Q position groups and a set of power adjustment values corresponding to each of the Q position groups, each position group comprising a plurality of position points, the plurality of position points in each position group being adjacent in space, and Q being an integer greater than zero.

[0008] The method provided by the embodiments of the application divides all position points into different position groups, reports one power value and one set of power adjustment values for each position group, and the plurality of position points in each position group are adjacent in space. In this way, on the one hand, the reporting of the power value of all position points in each position group only needs to report one power value as a reference, and the reporting of the power adjustment value of each position point in the group, for example, when the power values of 10 position points are 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, and 10.9, one 10 and the set of power adjustment values 0.1, 0.2, 0.3, 0.4, 0.5, 0.5, 0.6, 0.7, 0.8, and 0.9 can be reported, which can save the bits occupied by the integer part of some position points and is beneficial to reducing the overhead. On the other hand, the plurality of position points in each position group are adjacent in space, which can make the power values of the position points in each position group have a small span, for example, it is more beneficial to make the power values of the 10 position points in each position group be 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, and 10.9, which are relatively close values, rather than 10.1, 20.3, 15.6, 19.8, 30.2, 50.7, 30.9, 40.5, 80.2, and 88.3, which are relatively large span values. The power values of the position points in each position group have a small span, which is more conducive to obtaining the power value in the group as a reference, and is also more beneficial to making the span of each set of power adjustment values to be reported smaller, and the quantization bits required for each set of power adjustment values are less, which is beneficial to further saving the overhead.

[0009] In some implementations of the first aspect in combination with the first aspect, the Q position groups are all the position groups of a sensing space, that is, the position groups included in the sensing space are the Q position groups.

[0010] In some implementations of the first aspect, in a case where the Q location groups are all location groups of the perception space, the power values of the Q location groups in the first information are arranged in a first order, and the power adjustment values in the group of power adjustment values corresponding to each of the Q location groups are arranged in a second order. In this way, the reporting manner in the agreed order can eliminate the need to report the identifiers of the location groups and the identifiers of the multiple location points in each location group, which is conducive to reducing the number of bits occupied by the first information and saving communication overhead.

[0011] In some implementations of the first aspect, the Q location groups are part of all location groups included in the perception space, and the first information further includes an identifier of each of the Q location groups. In this way, the second device can identify the location group to which the power value in the first information corresponds, which is conducive to parsing the first information by the second device and improving the parsing efficiency of the first information.

[0012] In some implementations of the first aspect, the power value of each of the Q location groups is greater than or equal to a first threshold.

[0013] In some possible implementations, the higher the power value of a location point is, the stronger the reflection / scattering energy of the perception signal passing through the location point is, and the more likely the location point has a perception target. Conversely, the lower the power value of a location point is, the less likely the location point has a perception target. Therefore, in the embodiments of the present application, the power value of each of the location groups in the part of the location groups is greater than or equal to the first threshold. In this way, the first information reported by the first device can only include the power value of the location group having a perception target and the adjustment value corresponding to the location group, and does not need to report the power value of the location group that can not have a perception target. It can also be understood that the first information only reports valid values, which is conducive to reducing the number of bits occupied by the first information and saving communication overhead.

[0014] It is worth noting that in a case where the Q location groups include part of the location groups of the perception space, the power values of the location points in the remaining location groups can be regarded as zero or other arbitrary agreed values. In this way, although the first device only reports the power values and the power adjustment values of the part of the location groups, the second device can still obtain the power values of all the location points in the perception space, which is conducive to obtaining a complete perception result for the perception space.

[0015] In some possible implementation manners, one or more of the parameters in N0, N1, N2, O0, O1, and O2 are indicated by the second device to the first device, where N0 is a number of subcarriers used for transmitting the sensing signal, N1 is a number of antenna ports in a horizontal direction of a two-dimensional array antenna of the second device, N2 is a number of antenna ports in a vertical direction of the two-dimensional array antenna, O0 is a subcarrier oversampling factor, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N0, N1, N2, O0, O1, and O2 are all integers greater than zero, and the second device is the device that transmits the sensing signal.

[0016] The sensing space can be a space or a range used for feeding back sensing data obtained by two-dimensionally or three-dimensionally mapping a coverage range of a communication signal or a sensing signal of the second device, and the first device can obtain a two-dimensional or three-dimensional sensing space based on the parameters N0, N1, N2, O0, O1, and O2, by using the following two rules.

[0017] With reference to the first aspect, in some implementations of the first aspect, the first rule includes that the sensing space is mapped in a two-dimensional coordinate system in a horizontal direction dimension of a two-dimensional array antenna of the second device and a vertical direction dimension of the two-dimensional array antenna, and the sensing space includes M position groups, each of which includes P position points, M is a product of N1 and N2, and P is a product of O1 and O2; where N1 is a number of antenna ports in the horizontal direction of the two-dimensional array antenna of the second device, N2 is a number of antenna ports in the vertical direction of the two-dimensional array antenna, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N1, N2, O1, and O2 are all integers greater than zero, and the second device is the device that transmits the sensing signal.

[0018] With reference to the first aspect, in some implementations of the first aspect, in the first information, the power values of the Q position groups are arranged in a first order, and the first order is based on sorting coordinates of the Q position groups in a manner of arranging the horizontal direction dimension first and then arranging the vertical direction dimension, or arranging the vertical direction dimension first and then arranging the horizontal direction dimension.

[0019] In some implementations of the first aspect, the M position groups are position groups in a two-dimensional coordinate system mapping horizontal direction dimensions on the two-dimensional array antenna and vertical direction dimensions on the two-dimensional array antenna, the value of the horizontal direction dimension is denoted as m, m ranges from 0 to N1-1, the value of the vertical direction dimension is denoted as n, n ranges from 0 to N2-1, and the coordinate of the position group in the two-dimensional coordinate system is denoted as (m, n); one possible implementation of the first order includes: arranging N1 power values of N1 position groups with the coordinate (m, 0) in ascending order of m values, arranging N1 power values of N1 position groups with the coordinate (m, 1) in ascending order of m values, and sequentially increasing the value of n until N1 power values of N1 position groups with the coordinate (m, N2-1) are arranged in ascending order of m values; or arranging N2 power values of N2 position groups with the coordinate (0, n) in ascending order of n values, arranging N2 power values of N2 position groups with the coordinate (1, n) in ascending order of n values, and sequentially increasing the value of m until N2 power values of N2 position groups with the coordinate (N1-1, n) are arranged in ascending order of n values.

[0020] In the embodiments of the present application, the power values of the Q position groups in the first information are arranged in the first order, and based on the first order, the identity of each position group in the first information can not be reported, which is beneficial to reducing the number of bits occupied by the first information and saving communication overhead.

[0021] In some implementations of the first aspect, the second order is based on the coordinates of the P position points arranged in the order of first arranging the horizontal direction dimension and then arranging the vertical direction dimension, or first arranging the vertical direction dimension and then arranging the horizontal direction dimension.

[0022] In some implementations of the first aspect, in the first aspect, the coordinates of each location point in each location group in a two-dimensional coordinate system are represented by (e, f), and in the location group with coordinates (0, 0), e ranges from 0 to O1-1, and f ranges from 0 to O2-1; and one possible implementation of the second order includes: arranging the O1 power adjustment values of the O1 location points with coordinates (e, 0) in ascending order of e values, arranging the O1 power adjustment values of the O1 location points with coordinates (e, 1) in ascending order of e values, and sequentially increasing the value of f until the O1 power adjustment values of the O1 location points with coordinates (e, O2-1) are arranged in ascending order of e values; or arranging the O2 power adjustment values of the O2 location points with coordinates (0, f) in ascending order of f values, arranging the O2 power adjustment values of the O2 location points with coordinates (1, f) in ascending order of f values, and sequentially increasing the value of e until the O2 power adjustment values of the O2 location points with coordinates (O1-1, f) are arranged in ascending order of f values.

[0023] In the embodiments of the present application, the plurality of power adjustment values in the group of power adjustment values corresponding to each location group in the Q location groups in the first information are arranged in the second order, and based on the second order, the identity of each location point in the first information can not be reported, which is beneficial to reducing the number of bits occupied by the first information and saving communication overhead.

[0024] In some implementations of the first aspect, the second rule includes: the sensing space includes N location groups, and each location group includes O location points in a three-dimensional coordinate system in the subcarrier dimension, the horizontal direction dimension of the two-dimensional array antenna, and the vertical direction dimension of the two-dimensional array antenna, N is the product of N0, N1 and N2, and O is the product of O0, O1 and O2; wherein N0 is the number of subcarriers used to send the sensing signal, N1 is the number of antenna ports in the horizontal direction of the two-dimensional array antenna of the second device, N2 is the number of antenna ports in the vertical direction of the two-dimensional array antenna, O0 is a subcarrier oversampling factor, O1 is a horizontal direction oversampling factor of the two-dimensional array antenna, O2 is a vertical direction oversampling factor of the two-dimensional array antenna, N0, N1, N2, O0, O1 and O2 are all integers greater than zero, and the second device is a device that sends the sensing signal.

[0025] In some implementations of the first aspect, in the first information, the power values of the Q position groups are arranged in a first order, and the first order is based on sorting the coordinates of the Q position groups in a manner of arranging a horizontal direction dimension first, a vertical direction dimension second, and a subcarrier dimension last, arranging the vertical direction dimension first, the horizontal direction dimension second, and the subcarrier dimension last, arranging the subcarrier dimension first, the horizontal direction dimension second, and the vertical direction dimension last, arranging the horizontal direction dimension first, the subcarrier dimension second, and the vertical direction dimension last, arranging the vertical direction dimension first, the subcarrier dimension second, and the horizontal direction dimension last, or arranging the subcarrier dimension first, the vertical direction dimension second, and the horizontal direction dimension last.

[0026] In some implementations of the first aspect, the N position groups are position groups in a three-dimensional coordinate system mapped on a subcarrier dimension, a horizontal direction dimension of a two-dimensional array antenna, and a vertical direction dimension of the two-dimensional array antenna, the subcarrier dimension is denoted by s, the range of s is 0 to N0-1, the horizontal direction dimension is denoted by m, the range of m is 0 to N1-1, the vertical direction dimension is denoted by n, the range of n is 0 to N2-1, and the coordinates of a position group in the three-dimensional coordinate system are denoted by (s, m, n); in the first information, the power values of the Q position groups are arranged in a first order, and one possible implementation of the first order includes: arranging N1 power values of N1 position groups with coordinates (0, m, 0) in a sequence of increasing m values from small to large, arranging N1 power values of N1 position groups with coordinates (0, m, 1) in the sequence of increasing m values from small to large, and sequentially increasing the value of m until N1 power values of N1 position groups with coordinates (0, m, N2-1) are arranged in the sequence of increasing m values from small to large, then arranging N1 power values of N1 position groups with coordinates (1, m, 0) in the sequence of increasing m values from small to large, arranging N1 power values of N1 position groups with coordinates (2, m, 1) in the sequence of increasing m values from small to large, and sequentially increasing the value of s until N1 power values of N1 position groups with coordinates (N0-1, m, N2-1) are arranged in the sequence of increasing m values from small to large.

[0027] In the embodiments of the present application, the power values of the Q position groups in the first information are arranged in a first order, based on the first order, the identity of each position group can not be reported in the first information, which is beneficial to reducing the number of bits occupied by the first information and saving communication overhead.

[0028] In some implementations of the first aspect, in the first information, the multiple power adjustment values in the group of power adjustment values are arranged in a second order, and the second order is one of: arranging the multiple power adjustment values in the order of arranging a horizontal direction dimension first, a vertical direction dimension second, and a subcarrier dimension last; arranging the multiple power adjustment values in the order of arranging a vertical direction dimension first, a horizontal direction dimension second, and a subcarrier dimension last; arranging the multiple power adjustment values in the order of arranging a subcarrier dimension first, a horizontal direction dimension second, and a vertical direction dimension last; arranging the multiple power adjustment values in the order of arranging a horizontal direction dimension first, a subcarrier dimension second, and a vertical direction dimension last; arranging the multiple power adjustment values in the order of arranging a vertical direction dimension first, a subcarrier dimension second, and a horizontal direction dimension last; or arranging the multiple power adjustment values in the order of arranging a subcarrier dimension first, a vertical direction dimension second, and a horizontal direction dimension last.

[0029] In some implementations of the first aspect, a coordinate of each location point in each location group in a three-dimensional coordinate system is represented by (g, e, f), and in a location group with a coordinate of (0, 0, 0), g ranges from 0 to O0-1, e ranges from 0 to O1-1, and f ranges from 0 to O2-1; and in the first information, the multiple power adjustment values in the group of power adjustment values are arranged in a second order, and one possible implementation of the second order includes: arranging O1 power adjustment values of O1 location points with a coordinate of (0, e, 0) in the order of increasing e from small to large, arranging O1 power adjustment values of O1 location points with a coordinate of (0, e, 1) in the order of increasing e from small to large, and sequentially increasing the value of e until O1 power adjustment values of O1 location points with a coordinate of (0, e, O2-1) are arranged in the order of increasing e from small to large, then arranging O1 power adjustment values of O1 location points with a coordinate of (1, e, 0) in the order of increasing e from small to large, arranging O1 power adjustment values of O1 location points with a coordinate of (2, e, 1) in the order of increasing e from small to large, and sequentially increasing the value of g until O1 power adjustment values of O1 location points with a coordinate of (O0-1, e, O2-1) are arranged in the order of increasing e from small to large.

[0030] In the embodiments of the present application, in the first information, the multiple power adjustment values in the group of power adjustment values corresponding to each of the Q location groups are arranged in a second order, and based on the second order, the identity of each location point can not be reported in the first information, which is beneficial to reducing the number of bits occupied by the first information and saving communication overhead.

[0031] It is worth noting that in the description of the range of m being between 0 and N1-1, the meaning of "between 0 and N1-1" includes both endpoints, 0 and N1-1, the meaning of the range of n being between 0 and N2-1 also includes both endpoints, 0 and N2-1, the meaning of the range of e being between 0 and O1-1 also includes both endpoints, 0 and O1-1, the meaning of the range of f being between 0 and O2-1 also includes both endpoints, 0 and O2-1, the meaning of the range of s being between 0 and N0-1 also includes both endpoints, 0 and N0-1, the meaning of the range of g being between 0 and O0-1 also includes both endpoints, 0 and O0-1, and the similar descriptions in the context have the same meaning, which will not be repeated.

[0032] In a second aspect, a communication method is provided, which is applied to a second device. The method comprises: sending a sensing signal; receiving first information, the first information comprising power values of Q position groups and a set of power adjustment values corresponding to each of the Q position groups, each position group comprising a plurality of position points, the plurality of position points being adjacent in space, and Q being an integer greater than zero; and determining a sensing result according to the first information.

[0033] Some possible implementation manners and beneficial effects of the second aspect can refer to the first aspect, which will not be repeated.

[0034] In a third aspect, a communication device is provided, which comprises a module for executing the method in any of the possible implementation manners of the first aspect or the second aspect.

[0035] In a fourth aspect, another communication device is provided, which comprises a processor coupled with a memory and configured to execute instructions in the memory to implement the method in any of the possible implementation manners of the first aspect or the second aspect. Optionally, the device further comprises the memory. Optionally, the device further comprises a communication interface, and the processor is coupled with the communication interface.

[0036] In a fifth aspect, a communication system is provided, which comprises a first device configured to execute the method in any of the possible implementation manners of the first aspect and a second device configured to execute the method in any of the possible implementation manners of the second aspect.

[0037] In a sixth aspect, a processor is provided, which comprises an input circuit, an output circuit and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any of the possible implementation manners of the first aspect or the second aspect.

[0038] In the implementation process, the processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit can be received and input by, for example but not limited to, a receiver, the output signal output by the output circuit can be output to and transmitted by, for example but not limited to, a transmitter, and the input circuit and the output circuit can be the same circuit which is used as the input circuit and the output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0039] In a seventh aspect, a processing apparatus is provided, including one or more processors. The one or more processors are configured to read instructions stored in a memory, and can receive signals through a receiver and transmit signals through a transmitter. The one or more processors are configured to perform the method in any possible implementation manner of the first aspect or the second aspect.

[0040] Optionally, the processing apparatus further includes a memory, which can be integrated with the processor, or the memory and the processor are separately arranged.

[0041] In the implementation process, the memory can be a non-transitory memory, for example, a read only memory (ROM), which can be integrated on the same chip as the processor, or arranged on different chips respectively. The embodiments of the present application do not limit the type of memory and the arrangement of the memory and the processor.

[0042] It should be understood that the related data interaction process, for example, transmitting the indication information can be the process of outputting the indication information from the processor, and receiving the capability information can be the process of receiving the input capability information by the processor. Specifically, the processed output data can be output to the transmitter, and the input data received by the processor can come from the receiver. The transmitter and the receiver can be collectively referred to as a transceiver.

[0043] The processing apparatus in the above seventh aspect can be a chip, and the processor can be implemented by hardware or software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc. When implemented by software, the processor can be a general-purpose processor, which is implemented by reading software codes stored in a memory. The memory can be integrated in the processor or exist independently.

[0044] In an eighth aspect, a computer program product is provided. The computer program product includes a computer program (which can also be referred to as code or instructions) that, when executed by a computer, causes the computer to perform the method in any possible implementation of the first aspect or the second aspect.

[0045] In a ninth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program (which can also be referred to as code or instructions) that, when executed on a computer, causes the computer to perform the method in any possible implementation of the first aspect or the second aspect.

[0046] In a tenth aspect, a communication method is provided. The method includes: a second communication device sending a sensing signal to a first communication device; the second communication device receiving the sensing signal and sending first information to the first communication device based on the sensing signal, the first information including power values of Q location groups and a set of power adjustment values corresponding to each of the Q location groups, each location group including a plurality of location points, the plurality of location points included in each location group being adjacent in space, Q being an integer greater than zero. The second communication device determines a sensing result according to the first information. BRIEF DESCRIPTION OF DRAWINGS

[0047] FIG. 1 is a schematic diagram of a first communication system according to an embodiment of the present application;

[0048] FIG. 2 is a schematic diagram of a second communication system according to an embodiment of the present application;

[0049] FIG. 3 is a schematic diagram of a third communication system according to an embodiment of the present application;

[0050] FIG. 4 is a schematic diagram of a fourth communication system according to an embodiment of the present application;

[0051] FIG. 5 is a schematic diagram of a fifth communication system according to an embodiment of the present application;

[0052] FIG. 6 is a schematic diagram of a sixth communication system according to an embodiment of the present application;

[0053] FIG. 7 is a schematic diagram of a communication sensing network architecture according to an embodiment of the present application;

[0054] FIG. 8 is a schematic flowchart of a communication method according to an embodiment of the present application;

[0055] FIG. 9 is a schematic diagram of a sensing space division according to an embodiment of the present application;

[0056] FIG. 10 is another schematic diagram of a sensing space division according to an embodiment of the present application;

[0057] FIG. 11 is a schematic diagram of a sensing space according to an embodiment of the present application;

[0058] FIG. 12 is a schematic block diagram of a communication apparatus according to an embodiment of the present application;

[0059] FIG. 13 is a schematic block diagram of another communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions of the present application more clear and intuitive, the network optimization method and the communication apparatus according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and should not be used to limit the present application.

[0061] Before introducing the method and apparatus provided by the embodiments of the present application, the following points will be explained first.

[0062] First, in the embodiments shown below, each term and English abbreviation, such as reference data or differential data, is an exemplary example given for convenience of description, and should not constitute any limitation on the present application. The present application does not exclude the possibility of defining other terms capable of achieving the same or similar functions in the existing or future protocols.

[0063] Second, in the embodiments shown below, the first, second and various numerical numbers are only for differentiation for convenience of description, and do not limit the scope of the embodiments of the present application.

[0064] Third, "at least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following cases: A exists alone, A and B exist together, B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b and c, can represent: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c, where a, b, c can be single or multiple.

[0065] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD), a universal mobile telecommunication system (UMTS), a 5th generation (5G) system, a 5G-Advanced (5G-A) system, a new radio (NR), or other future communication systems, and the present application is not limited in this regard.

[0066] The network device involved in the embodiments of the present application can be a network side device with wireless transceiving function. For example, the network device can be a base station (BS), an evolved NodeB (eNodeB), a next generation NodeB (gNB) in a 5G mobile communication system, a transmission reception point (TRP), a base station evolved from 3GPP, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, and the network device can include one or more co-sited or non-co-sited transmission reception points. In addition, the network device can also be a home base station (for example, a home evolved NodeB or a home Node B (HNB)), a baseband unit (BBU), and can also be a wireless controller in a cloud radio access network (CRAN) scenario, or the access network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, an access network device in a 5G network, or a device in a future evolved PLMN network, etc., can be an access point (AP) in a wireless local area network (WLAN), can be a gNB in a new radio (NR) system, can be a satellite base station in a satellite communication system, and the embodiments of the present application are not limited in this regard.

[0067] The network device can also include a centralized unit (CU) node, or a distributed unit (DU) node, or include a CU node and a DU node, or a control plane CU node (CU-CP node) and a user plane CU node (CU-UP node) and a DU node. In this way, part of the functions of the radio access network device can be implemented through multiple network function entities, which can be network elements in hardware devices, or software functions running on dedicated hardware, or virtualized functions instantiated on a platform (for example, a cloud platform). Among them, the network device including the CU node and the DU node can split the protocol layers of the network device, and the functions of part of the protocol layers are controlled by the CU, and the functions of the remaining part or all of the protocol layers are distributed in the DU and controlled by the CU. As an implementation manner, the CU deploys the radio resource control (RRC) layer, the packet data convergence protocol (PDCP) layer, and the service data adaptation protocol (SDAP) layer in the protocol stack. The radio link control (RLC) layer, the media access control (MAC) layer, and the physical layer (PHY) layer in the DU deployment protocol stack. Therefore, the CU has the processing capability of RRC, PDCP, and SDAP. The DU has the processing capability of RLC, MAC, and PHY. The above-mentioned function split is only an example and does not constitute a limitation on the CU and the DU. That is, there can be other ways of function split between the CU and the DU, which are not described herein. The functions of the CU can be implemented by one entity or by different entities. For example, the functions of the CU can be further split, for example, the control plane (CP) and the user plane (UP) are separated, that is, the control plane of the CU (CU-CP) and the user plane of the CU (CU-UP). For example, the CU-CP and the CU-UP can be implemented by different function entities, and the CU-CP and the CU-UP can be coupled with the DU to jointly complete the functions of the network device. In one possible manner, the CU-CP is responsible for the control plane function, mainly including RRC and PDCP-C, wherein PDCP-C is mainly responsible for data encryption and decryption, integrity protection, data transmission, etc. of the control plane. The CU-UP is responsible for the user plane function, mainly including SDAP and PDCP-U, wherein SDAP is mainly responsible for processing the data of the core network device and mapping the data flow to the bearer. PDCP-U is mainly responsible for data encryption and decryption, integrity protection, header compression, sequence number maintenance, data transmission, etc. of the data plane.The CU-CP and the CU-UP are connected through an E1 interface. The CU-CP represents a network device connected through an interface between a core network device and the network device and the core network device. The CU-CP is connected through an F1-C (control plane) and a DU. The CU-UP is connected through an F1-U (user plane) and the DU. In addition, there is a possible implementation that the PDCP-C is also in the CU-UP, which is not limited in the present application.

[0068] In some implementations, the network device can further include a core network (CN) device, for example, can include part or all of a core network network element authentication management function (AMF), a user plane function (UPF), or a sensing network element-sensing function (SF).

[0069] In some implementations, the network device (for example, a base station) can include a function or entity for performing sensing services, which can be referred to as a sensing unit (SU), and the name of the function or entity is not limited in the present application. In the embodiments of the present application, only the SU is taken as an example.

[0070] Optionally, the SU can be connected (directly or indirectly) to the core network network element SF for interaction of related sensing requirements, and can also be connected to the core network network element AMF / UPF or CU / DU / RU for transmission of sensing-related information or data, which is not limited in the present application.

[0071] In some implementations, the network device can be a road side unit (RSU) in vehicle to everything (V2X) technology.

[0072] The network device in the present application can be a device with a sensing function. The device can transmit sensing signals, receive and process echo signals reflected by targets in the environment. In the embodiments of the present application, the communication device for implementing the function of the network device can be a network device, a network device with part of the function of a base station, or a device capable of supporting the network device to implement the function, such as a chip system, which can be installed in the network device.

[0073] The terminal device in the embodiments of the present application can be a user-side device with wireless transceiving function, which can be a fixed device, a mobile device, a handheld device (for example, a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (for example, a communication module, a modem, or a chip system, etc.) built in the above devices. The terminal device can also be referred to as a user equipment (UE), a mobile station (MS), a mobile terminal (MT), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile terminal, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus, etc.

[0074] The terminal device can be used to connect people, things, machines, etc., and can be widely used in various scenarios. The terminal device involved in the embodiments of the present application can be a device in cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine / machine-type communication (M2M / MTC) communication, Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, unmanned aerial vehicle, robot, etc. scenarios, such as handheld terminals in cellular communication, communication devices in D2D, Internet of Things devices in MTC, surveillance cameras in smart transportation and smart city, or communication devices on unmanned aerial vehicles, etc. The terminal device can also be a handheld device with wireless connection function, a vehicle-mounted device, etc.Currently, some examples of terminals can be: a mobile phone, a tablet computer, a notebook computer, a palm computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved public land mobile network (PLMN), and the like, and the embodiments of the present application are not limited thereto.

[0075] By way of example and not limitation, in the embodiments of the present application, the terminal device can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term for devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes. The wearable device is a portable device that is directly worn on the body or integrated into the clothes or accessories of the user. The wearable device is not only a hardware device, but also has powerful functions through software support and data interaction and cloud interaction. The general wearable smart device includes a full function, a large size, and can realize complete or partial functions without relying on a smart phone, such as a smart watch or smart glasses, and focuses on a certain application function and needs to cooperate with other devices such as a smart phone, such as various smart wristbands and smart jewelry for monitoring vital signs.

[0076] In addition, in the embodiments of the present application, the terminal device can also be a terminal device in an internet of things (IoT) system. The IoT is an important component of future information technology development, and its main technical feature is to connect objects through communication technology and a network, so as to realize an intelligent network of human-machine interconnection and object-object interconnection. The terminal device of the present application can also be a vehicle-mounted unit, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit built in as one or more components or units in a vehicle. The vehicle can implement the method of the present application through the built-in vehicle-mounted unit, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution-vehicle (LTE-V), vehicle-to-vehicle (V2V), etc.

[0077] The so-called perception requires the sending end to send a radio wave in a specific direction. The radio wave is reflected by the target to form a reflected wave, which is received and processed by the receiving end to obtain perception data. Perception can be divided into two modes, namely single-station perception and double-station perception. In single-station perception, the sending end and the receiving end of the perception signal are the same device. From the perception process, this station not only sends the perception signal, but also receives the reflection signal of the perception signal on the target surface. Therefore, the single-station perception mode is also called self-transmission and self-reception mode. In double-station perception, the sending end and the receiving end of the perception signal are two different devices. From the perception process, the perception station A sends the perception signal, and the reflection signal of the perception signal on the target surface is received by the perception station B. Therefore, the double-station perception mode is also called A-transmission and B-reception mode. FIGS. 1-6 exemplarily show the perception scenarios to which the embodiments of the present application are applicable.

[0078] FIG. 1 exemplarily shows a schematic diagram of a communication system 100 in an A-transmission and B-reception mode. As shown in FIG. 1, the network device sends a perception signal, the signal is reflected by the target surface, and the reflected signal is received by the terminal device. The terminal device can obtain perception data based on the reflected signal.

[0079] FIG. 2 exemplarily shows a schematic diagram of a communication system 200 in another A-transmission and B-reception mode. As shown in FIG. 2, the terminal device sends a perception signal, the signal is reflected by the target surface, and the reflected signal is received by the network device. The network device can obtain perception data based on the reflected signal.

[0080] In some implementations, before the terminal device transmits the sensing signal, the network device can send indication information to the terminal device to instruct the terminal device to perform sensing services, transmit sensing signals, and the like, which is not limited in the present application.

[0081] FIG. 3 exemplarily shows a schematic diagram of a communication system 300 in another A-to-B mode, as shown in FIG. 3, the sensing stations in the communication system 300 can all be network devices, the network device 1 transmits a sensing signal, the signal is reflected by a target surface, and the reflected signal is received by the network device 2, and the network device 2 can obtain sensing data based on the reflected signal.

[0082] Optionally, the network devices in the communication system 300 can be network devices of the same type or network devices of different types, which is not limited in the present application.

[0083] FIG. 4 exemplarily shows a schematic diagram of a communication system 400 in another A-to-B mode, as shown in FIG. 4, the sensing stations in the communication system 400 can all be terminal devices, the terminal device 1 transmits a sensing signal, the signal is reflected by a target surface, and the reflected signal is received by the terminal device 2, and the terminal device 2 can obtain sensing data based on the reflected signal.

[0084] Optionally, the terminal devices in the communication system 300 can be terminal devices of the same type or terminal devices of different types, which is not limited in the present application.

[0085] FIG. 5 exemplarily shows a schematic diagram of a communication system 500 in a self-to-self mode, as shown in FIG. 5, a terminal device transmits a sensing signal, the signal is reflected by a target surface, and the reflected signal is received by the terminal device, and the terminal device can obtain sensing data based on the reflected signal.

[0086] FIG. 6 exemplarily shows a schematic diagram of a communication system 600 in a self-to-self mode, as shown in FIG. 6, a network device can transmit a sensing signal, the signal is reflected by a target surface, and the reflected signal is received by the network device, and the network device can obtain sensing data based on the reflected signal.

[0087] Optionally, in any of the communication systems shown in FIGS. 1-6, the number of devices is only exemplary, and the terminal devices and / or network devices in each communication system can have more or fewer numbers, which is not limited in the present application.

[0088] Optionally, in the above FIG. 1-6, the target can be various tangible objects in the environment that can reflect electromagnetic waves, such as static objects such as mountains, forests, or buildings, and can also be movable objects including vehicles, drones, pedestrians, terminal devices, etc. The specific form of the target is not limited in the present application. In addition, the target can also be referred to as a scattering point, a perceived target, a detected target, a perceived object, a detected object, or a perceived device, etc. The specific name of the target is not limited in the embodiments of the present application.

[0089] It should be understood that in the above communication system of FIG. 1-6, the receiving end can obtain perception data based on the perception signal after receiving the perception signal reflected by the target. Further, the perception data can also be reported.

[0090] Optionally, in the communication 100 shown in FIG. 1, the terminal device can report the perception data to the network device, and the network device obtains the perception result using the information; in the communication system 200 shown in FIG. 2, the network device can report the perception data to the core network device (not shown in the figure) or another network device with stronger computing power (not shown in the figure), and the core network device or another network device obtains the perception result using the information; in the communication system 300 shown in FIG. 3, the network device 2 can report the perception data to the network device 1 or any other device; in the communication system 400 shown in FIG. 4, the terminal device 2 can report the perception data to the network device (not shown in the figure); in the communication system 500 shown in FIG. 5, the terminal device can report the perception data to the network device (not shown in the figure); in the communication system 600 shown in FIG. 6, the network device can report the perception data to the core network device (not shown in the figure) or another network device with stronger computing power (not shown in the figure), which is not limited in the present application.

[0091] FIG. 7 shows an exemplary communication perception network architecture 700 taking the terminal device as UE and the network device including SF, AMF, and UPF network elements in gNB and CN as an example, wherein the gNB includes SU, CU, and DU.

[0092] In one possible implementation, the gNB sends the perception signal, the UE receives the perception signal and obtains the perception data based on the perception signal, and the UE reports the perception data to the gNB, and then the gNB reports to the CN.

[0093] Optionally, when the UE reports the sensing data to the gNB (which can be understood as the UE reporting the sensing data to the SU in the gNB), the sensing data can be delivered by the UE to the DU, and then delivered by the DU to the CU, or delivered by the UE to the DU and then directly delivered by the DU to the SU, or delivered by the UE to the SU through the s-Uu interface. The application does not make specific limitations on this path.

[0094] Optionally, when the gNB transmits the sensing data to the CN (which can be understood as the gNB transmitting the sensing data to the SF network element in the CN), the SU can transmit the sensing data to the SF through the AMF or the UPF, or the CU can transmit the sensing data to the SF through the AMF or the UPF, or the SU or the CU can directly transmit the sensing data to the SF. The application does not make specific limitations on this.

[0095] Optionally, the UE can also transmit the sensing data to the AMF network element through the N1 interface, and then the AMF forwards the sensing data to the SF.

[0096] In some implementations, the AMF communicates with the SF through the NS1 interface, and the UPF communicates with the SF through the NS7 interface. The application does not make specific limitations on this.

[0097] The sensing data includes the power values of all position points in the sensing space, which can be obtained by grid partitioning the sensing space. In some implementations, when the terminal device or the network device reports the power values of all position points, the power value of each position point is directly reported without processing, for example, the sensing space includes 10 position points, and the power values of the 10 position points are 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, and 10.9. When reporting, it is reported in the form of 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, and 10.9. The power value of each position point needs to be quantized using multiple bits, which may result in the bit quantity to be reported exceeding gigabit (Gigabit), and the communication overhead is high.

[0098] Therefore, the embodiment of the present application provides a communication method and a communication device, all position points are divided into different position groups, one power value and a group of power adjustment values are reported for each position group, and the plurality of position points in the divided position group are adjacent in space. In this way, on the one hand, for the reporting of the power value of all position points in each position group, only one power value as a reference needs to be reported, and for the power adjustment value of each position point in the group, for example, when the power values of 10 position points are 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, and 10.9, one 10 and a group of power adjustment values 0.1, 0.2, 0.3, 0.4, 0.5, 0.5, 0.6, 0.7, 0.8, and 0.9 can be reported, which can save the bits occupied by the integer of some position points and is beneficial to reducing the overhead. On the other hand, the plurality of position points in the position group are adjacent in space, which can make the power value span of each position point in each position group small, for example, it is more beneficial to make the power values of 10 position points in each position group be 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, and 10.9, which are relatively close values, rather than 10.1, 20.3, 15.6, 19.8, 30.2, 50.7, 30.9, 40.5, 80.2, and 88.3, which are relatively large span values. The power value span of each position point in each position group is small, which is more conducive to obtaining the power value in the group as a reference, and is also more conducive to making the span of each group of power adjustment values to be reported small, and the quantization bits required for each group of power adjustment values are less, which is beneficial to further saving the overhead.

[0099] In some implementations, the terminal device can report the obtained sensing data to the network device. The terminal device and the network device can communicate directly or through a relay station, which is not limited in the present application.

[0100] The communication method provided by the present application will be described in detail from the perspective of device interaction in combination with FIG. 8. The specific form and quantity of each device shown in the figure are only examples and should not constitute any limitation on the implementation of the method provided by the present application.

[0101] FIG. 8 is a schematic flowchart of a communication method 800 provided by an embodiment of the present application. The method can be applied to any communication system shown in FIGS. 1-6. The first device can be a network device or a terminal device, and the second device can also be a network device or a terminal device, which is not limited in the present application. The method 800 specifically includes the following steps:

[0102] S801, the second device sends a sensing signal; correspondingly, the first device receives the sensing signal.

[0103] Specifically, the perception signal is a signal for perception, which can be a signal capable of being known by the receiving end for initial amplitude and phase. Alternatively, the perception signal can be a channel state information reference signal (CSI-RS), and the initial amplitude and phase information thereof can be pre-configured to the receiving end by a configuration sequence or the like; the perception signal can also be a data signal, and the receiving end can calculate the initial amplitude and phase of each data signal by data checking or known modulation; the perception signal can also be any other signal capable of being known by the receiving end for initial amplitude and phase.

[0104] It should be understood that the second device can send multiple perception signals in multiple directions, and the perception signals received by the second device can include signals reflected by the target or signals not reflected by the target. For example, if the first device sends a perception signal in the direction of the target, the second device receives a signal reflected or scattered by the target; if the first device sends a perception signal in the direction without the target, the second device receives a signal not reflected by the target. The present application does not make any limitation in this regard.

[0105] S802, the first device sends first information based on the perception signal, the first information including power values of Q position groups and a group of power adjustment values corresponding to each position group in the Q position groups, each position group including multiple position points, the multiple position points included in each position group being adjacent in space, and Q being an integer greater than zero; correspondingly, the second device receives the first information.

[0106] Alternatively, the power value of each position group in the Q position groups can be any value that can represent the position group, such as the maximum value, the minimum value, the average value, or the common integer bit value of the power values of the multiple position points in each position group, and the present application does not make any specific limitation in this regard.

[0107] In the embodiments of the present application, the first information reported by the first device includes power values of Q position groups and a set of power adjustment values corresponding to each of the Q position groups, each position group includes a plurality of position points which are adjacent in space. In this way, on the one hand, the reporting of the power values of all position points in each position group only needs to report one power value as a reference, and the power adjustment values for each position point in the group, for example, when the power values of 10 position points are reported as 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, 10.9, one 10 and a set of power adjustment values 0.1, 0.2, 0.3, 0.4, 0.5, 0.5, 0.6, 0.7, 0.8, 0.9 can be reported, which can save the bits occupied by the integer part of some position points and is beneficial to reduce the overhead. On the other hand, the plurality of position points in the position group are adjacent in space, which can make the power values of the position points in each position group have a small span, for example, it is more beneficial to make the power values of the 10 position points in each position group be 10.1, 10.2, 10.3, 10.4, 10.5, 10.5, 10.6, 10.7, 10.8, 10.9, which are relatively close values, rather than 10.1, 20.3, 15.6, 19.8, 30.2, 50.7, 30.9, 40.5, 80.2, 88.3, which have a large span. The power values of the position points in each position group have a small span, which is easier to obtain the power value in the group as a reference, and is also more beneficial to make the span of each set of power adjustment values to be reported smaller, and the quantization bits required for each set of power adjustment values are less, which is beneficial to further save the overhead.

[0108] In some implementations, the first information described above can be sent through a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) or other uplink channels, which is not limited in the present application.

[0109] S803, the second device determines the sensing result according to the first information.

[0110] It is worth noting that the first information described above can be understood as the sensing data reported by the first device to the second device. The second device can receive a plurality of sensing data from a plurality of different devices, and fuse the plurality of different sensing data to obtain a sensing result, which can improve the sensing accuracy of each position point. The fused data can also include sensing data obtained by the second device based on self-generated and self-received sensing signals.

[0111] Optionally, the plurality of different devices can be devices of the same type, such as network devices or terminal devices, or devices of different types, such as network devices and terminal devices, and the application does not limit this.

[0112] Optionally, the manner of fusing the plurality of different perception data can be adding or multiplying the power values of the same position point, or using any other fusion manner, and the application does not limit this.

[0113] The perception result is a result determined by the second device based on the plurality of perception data, which can reflect the presence or absence, position, distance, or imaging data of the perception target, and its essence is also a set of data. In a possible implementation, the second device can make a decision based on the fused power value of each position point, and the decision rule can be, for example, that the fused power value is greater than or equal to a second threshold (or greater than the second threshold) to determine whether a target exists at the position point, and output point cloud data based on the coordinates of the position point. The point cloud data can be the perception result determined by the second device.

[0114] Optionally, the point cloud data can contain a plurality of "0"s and / or a plurality of "1"s, where 0 represents that there is no target at the position point, and 1 represents that there is a target at the position point, and the application does not limit this.

[0115] As an optional embodiment, the Q position groups can be all position groups of the perception space. In the case where the Q position groups are all position groups of the perception space, the power values of the Q position groups in the first information are arranged in a first order, and the plurality of power adjustment values in the group of power adjustment values corresponding to each position group of the Q position groups are arranged in a second order. In this way, the manner of reporting in the agreed order can not need to report the identifiers of the position groups and the identifiers of the plurality of position points in the position groups, which is beneficial to reducing the number of bits occupied by the first information and saving communication overhead. The specific description of the first order and the second order will be given in detail below, and will not be repeated here.

[0116] As an optional embodiment, the Q position groups can be part of the position groups included in the perception space. In the case where the Q position groups are part of the position groups of the perception space, the first information further includes the respective identifiers of each position group of the Q position groups. In this way, it is beneficial for the second device to identify the position groups to which the power values included in the first information correspond, and it is helpful for the second device to parse the first information.

[0117] In some possible implementations, the higher the power value of a certain position point, the stronger the reflection / scattering energy of the perception signal passing through the point, and the more likely the point has a perception target. Conversely, the lower the power value of a certain position point, the less likely the point has a perception target. Therefore, when the Q position groups are part of all the position groups included in the perception space, the power value of each position group in the Q position groups can be greater than or equal to the first threshold. In this way, the first information reported by the first device can only include the power value of the position group having a perception target and the adjustment value corresponding to the position group, and does not need to report the power value of the position group that can not have a perception target, that is, the first information can only report valid values, which is beneficial to reducing the number of bits occupied by the first information and saving communication overhead.

[0118] The condition that "the power value of each position group in the Q position groups is greater than or equal to the first threshold" can be understood as a condition for the first device to determine which power values of the position groups need to be reported. This condition can also be replaced by "the power value of each position group in the part of the position groups is greater than the first threshold". The present application does not make a specific limitation on whether the condition includes "equal to".

[0119] Optionally, the respective identifier of each position group in the part of the position groups can be a position identifier of the position group in all the position groups, or can be an index of the position group, but the present application does not make a specific limitation thereon.

[0120] The perception space can be a space or a range obtained by two-dimensionally or three-dimensionally mapping a coverage range of a communication signal or a perception signal of the second device, and used for feeding back perception data. Optionally, the perception space can also be referred to as an imaging area, a coverage area, a perception range, or the like, and the present application does not make a specific limitation on the name thereof. In the description of the embodiments of the present application, only "perception space" is taken as an example for description.

[0121] The division of the perception space and the rules of the first order and the second order in different dimensions of the perception space will be described in detail below in combination with FIG. 9 to FIG. 11.

[0122] In a first possible implementation, the perception space can be a two-dimensional space in a two-dimensional coordinate system mapped in a horizontal direction dimension of a two-dimensional array antenna of the second device and a vertical direction dimension of the two-dimensional array antenna. The perception space can include M position groups, and each position group can include P position points. M is a product of N1 and N2, and P is a product of O1 and O2. N1 is a number of antenna ports in the horizontal direction of the two-dimensional array antenna of the second device, N2 is a number of antenna ports in the vertical direction of the two-dimensional array antenna, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, and O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna. N1, N2, O1, and O2 are all integers greater than zero.

[0123] Further, the M position groups are position groups in a two-dimensional coordinate system mapping horizontal direction dimension on the two-dimensional array antenna and vertical direction dimension on the two-dimensional array antenna, the value of the horizontal direction dimension is denoted by m, the range of m is between 0 and N1-1, the value of the vertical direction dimension is denoted by n, the range of n is between 0 and N2-1, the coordinate of a position group in the two-dimensional coordinate system is denoted by (m, n); each position group includes a plurality of position points, the coordinate of each position point in the two-dimensional coordinate system is denoted by (e, f), the meaning of the position group and each position point in the same coordinate is different, that is, the position group and the position point are in the same two-dimensional coordinate system, but the position group and the position point do not share the scale of the coordinate axis, in the (0, 0) coordinate position group, the range of e is between 0 and O1-1, the range of f is between 0 and O2-1, the (0, 0) coordinate position group includes a position point with a coordinate of (0, 0), as shown in FIG. 9.

[0124] In the first information, the power values of the Q position groups are arranged in a first order, the first order can be any one of the full permutations of the coordinates of the Q position groups, for example, the first order can be sorted according to the rule of arranging the horizontal direction dimension first and then arranging the vertical direction dimension, or arranging the vertical direction dimension first and then arranging the horizontal direction dimension, and the application does not limit this. Exemplarily, the first order can include any one of the following sorting methods:

[0125] Method 1: arrange the N1 power values of the N1 position groups with a coordinate of (m, 0) in order from small to large according to the value of m, then arrange the N1 power values of the N1 position groups with a coordinate of (m, 1) in order from small to large according to the value of m, and increase the value of n successively until the N1 power values of the N1 position groups with a coordinate of (m, N2-1) are arranged in order from small to large according to the value of m.

[0126] Method 2: arrange the N2 power values of the N2 position groups with a coordinate of (0, n) in order from small to large according to the value of n, then arrange the N2 power values of the N2 position groups with a coordinate of (1, n) in order from small to large according to the value of n, and increase the value of m successively until the N2 power values of the N2 position groups with a coordinate of (N1-1, n) are arranged in order from small to large according to the value of n.

[0127] In the first information, the plurality of power adjustment values in each group of power adjustment values can be arranged in a second order, the second order can be any one of the full permutations of the coordinates of the P position points, for example, the second order can be sorted according to the rule of arranging the horizontal direction dimension first and then arranging the vertical direction dimension, or arranging the vertical direction dimension first and then arranging the horizontal direction dimension, and the application does not limit this. Exemplarily, the second order can include any one of the following sorting methods: ​Any one of the full permutations, for example, can be a regular order obtained in the manner of arranging the horizontal direction dimension first and then arranging the vertical direction dimension, or arranging the vertical direction dimension first and then arranging the horizontal direction dimension based on the coordinates of the P position points, which is not specifically limited in the present application. Exemplarily, the second order can include any one of the following ordering manners:

[0128] Manner (1): O1 power adjustment values of O1 position points with coordinates (e, 0) are arranged in order of e value from small to large, then O1 power adjustment values of O1 position points with coordinates (e, 1) are arranged in order of e value from small to large, and the value of f is increased successively until O1 power adjustment values of O1 position points with coordinates (e, O2-1) are arranged in order of e value from small to large.

[0129] Manner (2): O2 power adjustment values of O2 position points with coordinates (0, f) are arranged in order of f value from small to large, then O2 power adjustment values of O2 position points with coordinates (1, f) are arranged in order of f value from small to large, and the value of e is increased successively until O2 power adjustment values of O2 position points with coordinates (O1-1, f) are arranged in order of f value from small to large.

[0130] FIG. 9 exemplarily shows a grouping schematic diagram of a two-dimensional perception space, taking N1=4, N2=2, O1=4, O2=4 as an example. As shown in FIG. 9, the perception space includes M=N1*N2=8 position groups, and each position group includes P=O1*O2=16 position points.

[0131] Exemplarily, the first order of the power values of the corresponding position groups is shown by the coordinates of the position groups, which can be (0, 0), (1, 0), (2, 0), (3, 0), (0, 1), (1, 1), (2, 1), (3, 1); the second order of a group of power adjustment values corresponding to the position group with coordinates (0, 0) is shown by the coordinates of the 16 position points in this position group, which can be (0, 0), (1, 0), (2, 0), (3, 0), (0, 1), (1, 1), (2, 1), (3, 1), (0, 2), (1, 2), (2, 2), (3, 2), (0, 3), (1, 3), (2, 3), (3, 3); the position points in the position groups with coordinates (1, 0), (2, 0), (3, 0), (0, 1), (1, 1), (2, 1), (3, 1) can also follow similar rules, which will not be repeated here.

[0132] In a second possible implementation, the sensing space is a three-dimensional space mapped in a three-dimensional coordinate system of a subcarrier dimension, a horizontal direction dimension of the two-dimensional array antenna, and a vertical direction dimension of the two-dimensional array antenna, the sensing space includes N position groups, each of which includes O position points, N is a product of N0, N1, and N2, and O is a product of O0, O1, and O2; wherein N0 is a number of subcarriers used for sending the sensing signal, N1 is a number of antenna ports in the horizontal direction of the two-dimensional array antenna of the second device, N2 is a number of antenna ports in the vertical direction of the two-dimensional array antenna, O0 is a subcarrier oversampling factor, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, and O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N0, N1, N2, O0, O1, and O2 are all integers greater than zero.

[0133] In some implementations, the second device sends the sensing signal on the N0 subcarriers using all or part of the M antenna ports, and the second device calculates power values of all the position points by using an algorithm such as back projection (BP) or discrete fourier transform (DFT) based on a power value of the sensing signal received from the zth subcarrier, the xth position in the horizontal direction, and the yth position in the vertical direction, and values of the oversampling factors in each dimension received by the second device, wherein M is a product of N1 and N2.

[0134] The N position groups are position groups mapped in a three-dimensional coordinate system of a subcarrier dimension, a horizontal direction dimension of the two-dimensional array antenna, and a vertical direction dimension of the two-dimensional array antenna, a value of the subcarrier dimension is denoted by s, s ranges between 0 and N0-1, a value of the horizontal direction dimension is denoted by m, m ranges between 0 and N1-1, a value of the vertical direction dimension is denoted by n, n ranges between 0 and N2-1, and a coordinate of a position group in the three-dimensional coordinate system is denoted by (s, m, n); each position group includes a plurality of position points, a coordinate of each position point in the three-dimensional coordinate system is denoted by (g, e, f), in the position group with a coordinate of (0, 0, 0), g ranges between 0 and O0-1, e ranges between 0 and O1-1, and f ranges between 0 and O2-1, and the position group with a coordinate of (0, 0, 0) includes a position point with a coordinate of (0, 0, 0), as shown in FIG. 11.

[0135] In this case, the first order of the Q position groups corresponding to the power values in the first information can be a lexicographic order of the coordinates of the Q position groups. Any one of the full permutations, for example, the first order can be sorted in the following ways: first arrange the horizontal direction dimension, then arrange the vertical direction dimension, and finally arrange the subcarrier dimension; first arrange the vertical direction dimension, then arrange the horizontal direction dimension, and finally arrange the subcarrier dimension; first arrange the subcarrier dimension, then arrange the horizontal direction dimension, and finally arrange the vertical direction dimension; first arrange the horizontal direction dimension, then arrange the subcarrier dimension, and finally arrange the vertical direction dimension; first arrange the vertical direction dimension, then arrange the subcarrier dimension, and finally arrange the horizontal direction dimension; or first arrange the subcarrier dimension, then arrange the vertical direction dimension, and finally arrange the horizontal direction dimension.

[0136] For example, the first order in this case can include any one of the following sorting methods:

[0137] Method one: arrange N1 power values of N1 position groups with coordinates (0, m, 0) in ascending order of m values, then arrange N1 power values of N1 position groups with coordinates (0, m, 1) in ascending order of m values, and so on until N1 power values of N1 position groups with coordinates (0, m, N2-1) are arranged in ascending order of m values, then arrange N1 power values of N1 position groups with coordinates (1, m, 0) in ascending order of m values, then arrange N1 power values of N1 position groups with coordinates (2, m, 1) in ascending order of m values, and so on until N1 power values of N1 position groups with coordinates (N0-1, m, N2-1) are arranged in ascending order of m values.

[0138] Method two: arrange N0 power values of N0 position groups with coordinates (s, 0, 0) in ascending order of s values, then arrange N0 power values of N0 position groups with coordinates (s, 0, 1) in ascending order of s values, and so on until N0 power values of N0 position groups with coordinates (N0-1, 0, N2-1) are arranged in ascending order of s values, then arrange N0 power values of N0 position groups with coordinates (s, 1, 0) in ascending order of s values, then arrange N0 power values of N0 position groups with coordinates (s, 2, 1) in ascending order of s values, and so on until N0 power values of N0 position groups with coordinates (s, N1-1, N2-1) are arranged in ascending order of s values.

[0139] Manner three: N2 power values of N2 position groups with coordinates (0, 0, n) are arranged in order of n from small to large, then N2 power values of N2 position groups with coordinates (0, 1, n) are arranged in order of n from small to large, the value of m is increased successively, until N2 power values of N2 position groups with coordinates (0, 2, N2-1) are arranged in order of n from small to large, then N2 power values of N2 position groups with coordinates (1, 0, n) are arranged in order of n from small to large, then N2 power values of N2 position groups with coordinates (2, 1, n) are arranged in order of n from small to large, the value of s is increased successively, until N2 power values of N2 position groups with coordinates (N0-1, N1-1, n) are arranged in order of n from small to large.

[0140] In this case, in the first information, the second order corresponding to the plurality of power adjustment values in a group of power adjustment values can be any one of O position point coordinates full permutations, for example, the second order can be sorted in the following manners: arranging the horizontal direction dimension first, then the vertical direction dimension, and finally the subcarrier dimension; arranging the vertical direction dimension first, then the horizontal direction dimension, and finally the subcarrier dimension; arranging the subcarrier dimension first, then the horizontal direction dimension, and finally the vertical direction dimension; arranging the horizontal direction dimension first, then the subcarrier dimension, and finally the vertical direction dimension; arranging the vertical direction dimension first, then the subcarrier dimension, and finally the horizontal direction dimension; or arranging the subcarrier dimension first, then the vertical direction dimension, and finally the horizontal direction dimension. For example, the second order can include any one of the following sorting manners:

[0141] Manner ①: O1 power adjustment values of O1 position points with coordinates (0, e, 0) are arranged in order of e from small to large, then O1 power adjustment values of O1 position points with coordinates (0, e, 1) are arranged in order of e from small to large, the value of e is increased successively, until O1 power adjustment values of O1 position points with coordinates (0, e, O2-1) are arranged in order of e from small to large, then O1 power adjustment values of O1 position points with coordinates (1, e, 0) are arranged in order of e from small to large, then O1 power adjustment values of O1 position points with coordinates (2, e, 1) are arranged in order of e from small to large, the value of g is increased successively, until O1 power adjustment values of O1 position points with coordinates (O0-1, e, O2-1) are arranged in order of e from small to large.

[0142] Method 2: O0 power adjustment values of O0 position points with coordinates (g, 0, 0) are arranged in order of g values from small to large, then O0 power adjustment values of O0 position points with coordinates (g, 0, 1) are arranged in order of g values from small to large, g values are increased successively until O0 power adjustment values of O0 position points with coordinates (O0-1, 0, O2-1) are arranged in order of g values from small to large, then O0 power adjustment values of O0 position points with coordinates (g, 1, 0) are arranged in order of g values from small to large, then O0 power adjustment values of O0 position points with coordinates (g, 2, 1) are arranged in order of g values from small to large, g values are increased successively until O0 power adjustment values of O0 position points with coordinates (g, O1-1, O2-1) are arranged in order of g values from small to large.

[0143] Method 3: O2 power adjustment values of O2 position points with coordinates (0, 0, f) are arranged in order of f values from small to large, then O2 power adjustment values of O2 position points with coordinates (0, 1, f) are arranged in order of f values from small to large, f values are increased successively until O2 power adjustment values of O2 position points with coordinates (0, 2, O2-1) are arranged in order of f values from small to large, then O2 power adjustment values of O2 position points with coordinates (1, 0, f) are arranged in order of f values from small to large, then O2 power adjustment values of O2 position points with coordinates (2, 1, f) are arranged in order of f values from small to large, g values are increased successively until O2 power adjustment values of O2 position points with coordinates (O0-1, O1-1, f) are arranged in order of f values from small to large.

[0144] FIG. 10 shows a grouping diagram of a three-dimensional perception space with N0=2, N1=4, N2=2, O0=4, O1=4, O2=4 as an example. As shown in FIG. 10, the perception space includes N=N0*N1*N2=16 position groups, each of which includes O=O0*O1*O2=64 position points. FIG. 11 shows position points in a position group with coordinates (0, 0, 0) as an example, in which each small square represents a position point.

[0145] Exemplarily, the first order of the power values of the corresponding position groups is shown in the three-dimensional coordinates of the position groups, and one implementation manner can be to arrange the layers of s=0 (0, 0, 0), (0, 1, 0), (0, 2, 0), (0, 3, 0), (0, 0, 1), (0, 1, 1), (0, 2, 1), (0, 3, 1) first, and then arrange the layers of s=1 (1, 0, 0), (1, 1, 0), (1, 2, 0), (1, 3, 0), (1, 0, 1), (1, 1, 1), (1, 2, 1), (1, 3, 1), and the arrangement rules of the layers can be the same or different, which is not limited in the present application. The second order corresponding to the power adjustment values of the O position points in each position group can be similar to the rule of the first order, and details are not repeated here.

[0146] In some implementations, the Q position groups are part of the position groups in the perception space, and the power values of the Q position groups can still follow the above rules, with the difference being that, if a position group is not included in the first information, the position group can be skipped when the first order reaches the position group, and the next position group is continued. The specific rule can be similar to the rule when the Q position groups are part of the position groups in the perception space in the two-dimensional coordinates, and details are not repeated here.

[0147] Optionally, the above three-dimensional coordinate system can also be replaced by a Cartesian three-dimensional coordinate system, and the implementation is similar to the above three-dimensional coordinate system, and details are not repeated here.

[0148] Optionally, the subcarrier dimension can also be referred to as the distance dimension, the horizontal direction dimension can also be referred to as the horizontal angle dimension, and the vertical direction dimension can also be referred to as the vertical angle dimension, which is not limited in the present application.

[0149] Exemplarily, the second device is taken as the coordinate origin of the polar coordinate system, and the space range of the perception space in the subcarrier dimension, the horizontal direction dimension and the vertical direction dimension can be determined by the distance R(u) of the second device in the subcarrier dimension, the horizontal angle θ(v) in the horizontal direction dimension and the vertical angle θ(w) in the vertical direction dimension.

[0150] wherein, In the formula, c is the speed of light, Δf is the interval of adjacent subcarriers used for sending the perception signal, u is the subcarrier index after oversampling, and the value range of u can be [0, N0*O0]. It should be understood that “*” involved herein means multiplication in mathematical operation, which is not repeatedly explained in the context.

[0151] In the formula, λ is the subcarrier wavelength, d1 is the interval of the antenna ports in the horizontal direction, v is the horizontal direction index after oversampling, and the value range of v can be [0, N1*O1].

[0152] In the formula, λ is a subcarrier wavelength, d2 is the interval of the antenna ports in the vertical direction, w is the vertical direction index after oversampling, and the value range of w can be [0, N2*O2].

[0153] Therefore, according to the above R(u), θ(v) and θ(w), and the value range of u, v and w, a perception space can be determined. It should be understood that the above perception space is only an example and does not constitute a limitation on the embodiments of the present application.

[0154] Alternatively, the position group in the embodiments of the present application can also be referred to as a beam group, a spatial domain beam set, a beam set, a coarse-grained position group, etc., and the position point can also be referred to as a beam pointing, a beam direction or a beam, and the first information can be referred to as perception imaging information or a perception imaging information codebook, which are not limited in the present application.

[0155] Next, the possible ordering of the power values of the Q position groups included in the first information and the power adjustment values corresponding to each position group in the Q position groups will be described. Taking the following power value as an example for description: the power value sequence of the Q position groups arranged in a first order is {a1, a2, a3…aQ}, each position group includes O position points, the sequence of the power adjustment values corresponding to a1 arranged in a second order is {b1 Q , b1 1 , b1 2 , b1 3 …b1 O , the sequence of the power adjustment values corresponding to a2 arranged in a second order is {b2 1 , b2 2 , b2 3 …b2 O , the sequence of the power adjustment values corresponding to a3 arranged in a second order is {b3 1 , b3 2 , b3 3 …b3 O , …, the sequence of the power adjustment values corresponding to aQ arranged in a second order is {bQ Q , bQ Q , bQ 1 , bQ Q , bQ 2 …bQ Q . 3 Q O .

[0156] Case 1: The sequence of the first information can be the power values of the Q position groups arranged in the first order, and then the Q groups of power adjustment values corresponding to the Q position groups arranged in the first order, and each group of power adjustment values arranged in the second order. For example, the sequence of the first information can be {a1, a2, a3…aQ, b1, b2, b3…bQ}. Q 1 2 3 O 1 2 3 O 1 2 3 O Q 1 Q 2 Q 3 Q O .

[0157] Case 2: The sequence of the first information can be the power value of a position group + a group of power adjustment values of the position group, wherein the power values of the Q position groups are arranged in the first order, and each group of power adjustment values is arranged in the second order. For example, the sequence of the first information can be {a1, b1 1 2 3 O 1 2 3 O 1 2 3 O Q Q 1 Q 2 Q 3 Q O .

[0158] In the case where the Q position groups are part of the position groups in the sensing space, the first information further comprises the identification of the position groups, which can be the coordinates of the position groups in a two-dimensional coordinate system or a three-dimensional coordinate system, but the present application does not make a specific limitation thereto.

[0159] ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Taking the coordinates in a three-dimensional coordinate system as an example, the Q position groups include the position groups corresponding to the coordinates (0, 0, 0), (0, 1, 0) and (0, 2, 0), and the power values of the position groups are a1, a2 and a3 respectively, each position group includes O position points, the sequence of the power adjustment values corresponding to a1 arranged in the second order is {b1 1 , b1 2 , b1 3 …b1 O}, the sequence of the power adjustment values corresponding to a2 arranged in the second order is {b2 1 , b2 2 , b2 3 …b2 O}, and the sequence of the power adjustment values corresponding to a3 arranged in the second order is {b3 1 , b3 2 , b3 3 …b3 O}, the sequence of the first information can also have the following cases:

[0160] Case 3: The sequence of the first information can be in the form of the coordinates of a position group + the power value of a position group + a group of power adjustment values of a position group, wherein the power values of the Q position groups are arranged in the first order, and each group of power adjustment values is arranged in the second order. For example, the sequence of the first information can be {(0, 0, 0), a1, b1 1 , b1 2 , b1 3 …b1 O , (0, 1, 0), a2, b2 1 , b2 2 , b2 3 …b2 O , (0, 2, 0), a3, b3 1 , b3 2 , b3 3 …b3 O}.

[0161] Case 4: The sequence of the first information can be arranged in a certain order according to the coordinates of each position group, and then arranged in the same order according to the power values of each position group and a group of power adjustment values of each position group, wherein each group of power adjustment values is arranged in the second order. For example, the sequence of the first information can be {(0, 0, 0), (0, 1, 0), (0, 2, 0), a1, a2, a3, b1 1 , b1 2 , b1 3 …b1 O , b2 1 , b2 2 , b2 3 …b2 Ob3 1 b3 2 b3 3 b3 O}。

[0162] Optionally, the order of the coordinates of the location groups, the power values of the location groups and the whole set of power adjustment values of the location groups can be any order as long as the same order is adopted for the three, and the application does not limit the overall order of the three, i.e., the coordinates of the location groups, the power values of the location groups and the whole set of power adjustment values of the location groups.

[0163] In some implementations, the first information can further include the number Q of the Q location groups, and the number Q can be arranged at the front, the end or any specified position in the sequence of the first information shown in the above case 1, case 2, case 3 or case 4, and the application does not limit this.

[0164] In some implementations, the length of the first information can be agreed upon, and it can be further agreed upon which bits in the first information correspond to which meaning (such as the power value, the power adjustment value, the number of the location group or the identification of the location group, etc.), and the application does not limit this.

[0165] Optionally, the sequence of the above first information can be converted into a binary bit sequence, a non-binary bit sequence or any other modulation signal format, and the application does not limit this.

[0166] It should be understood that in the embodiments of the application, the first information includes the power values of the Q location groups and a set of power adjustment values corresponding to each of the Q location groups, and the multiple position points in each location group are adjacent in space, which can also be understood as the multiple position points in the same location group being continuous in space. In order to further reduce the number of bits occupied by the power value and the power adjustment value, the range of the power value and the power adjustment value can be agreed upon, so that the number of bits occupied by the power adjustment value can be constrained, which is beneficial to control the length of the first information and save the communication overhead.

[0167] In some implementations, the power value can be selected from some fixed values, and the number of quantization bits required by the power value can not exceed the maximum number of bits required by the fixed value, which is beneficial to control the number of bits required by the first information as a whole and save the communication overhead. For example, the power value can be selected from {0, 1, 2, 3, 4, …, 15}, and the power value can be quantized by at most 4 bits. If the power value calculated by the first device for a location group is not in these values, the closest value from these values is selected as the power value of the location group.

[0168] In some implementations, the power adjustment values can be selected from a fixed set, and the required quantization bits of the power adjustment values can not exceed the maximum bits occupied by the values in the fixed set, which is beneficial to control the total bits required by the first information and save communication overhead. For example, the power adjustment values can be selected from the values

[0169] For example, in the three-dimensional coordinate system, the power value of the position group with coordinates (0, 0, 0) can be 14, and the corresponding set of power adjustment values can include 16 values

[0170] It should be understood that the steps of each of the above embodiments can also be coupled with each other, and the present application does not limit this. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0171] The communication method of the embodiments of the present application is described in detail above in combination with FIGS. 8 to 11. The communication device of the embodiments of the present application will be described in detail below in combination with FIGS. 12 and 13.

[0172] FIG. 12 shows a communication device 1200 provided by the embodiments of the present application, which includes a transceiver module 1201 and a processing module 1202.

[0173] In a possible implementation, the communication device 1200 can be used to implement the steps and processes corresponding to the above-mentioned first device.

[0174] The transceiver module 1201 is configured to receive a sensing signal, and transmit first information based on the sensing signal, the first information including power values of Q position groups and a set of power adjustment values corresponding to each of the Q position groups, each position group including a plurality of position points that are adjacent in space, and Q being an integer greater than zero.

[0175] Optionally, the Q position groups are all position groups of a sensing space.

[0176] Optionally, the Q position groups are part of all position groups included in a sensing space, and the first information further includes respective identifiers of each of the Q position groups.​​

[0177] Optionally, the power value of each of the Q position groups is greater than or equal to a first threshold value.

[0178] Optionally, the sensing space includes M position groups, each of which includes P position points, M is a product of N1 and N2, and P is a product of O1 and O2; N1 is a number of antenna ports in a horizontal direction of the two-dimensional array antenna of the second device, N2 is a number of antenna ports in a vertical direction of the two-dimensional array antenna, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, and O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N1, N2, O1, and O2 are all integers greater than zero, and the second device is a device that transmits the sensing signal.

[0179] Optionally, the M position groups are position groups in a two-dimensional coordinate system mapped in a horizontal direction dimension of the two-dimensional array antenna and a vertical direction dimension of the two-dimensional array antenna, the value of the horizontal direction dimension is represented by m, m ranges between 0 and N1-1, the value of the vertical direction dimension is represented by n, n ranges between 0 and N2-1, and the coordinate of the position group in the two-dimensional coordinate system is represented by (m, n); in the first information, the power values of the Q position groups are arranged in a first order, the first order includes: arranging N1 power values of N1 position groups with a coordinate of (m, 0) in an order from small to large according to the value of m, then arranging N1 power values of N1 position groups with a coordinate of (m, 1) in an order from small to large according to the value of m, and increasing the value of n successively until N1 power values of N1 position groups with a coordinate of (m, N2-1) are arranged in an order from small to large according to the value of m; or arranging N2 power values of N2 position groups with a coordinate of (0, n) in an order from small to large according to the value of n, then arranging N2 power values of N2 position groups with a coordinate of (1, n) in an order from small to large according to the value of n, and increasing the value of m successively until N2 power values of N2 position groups with a coordinate of (N1-1, n) are arranged in an order from small to large according to the value of n.

[0180] Optionally, the coordinates of each position point in each position group in a two-dimensional coordinate system are represented by (e, f), and in the position group with coordinates (0, 0), e ranges from 0 to O1-1 and f ranges from 0 to O2-1; in the first information, the plurality of power adjustment values in the group of power adjustment values are arranged in a second order, and the second order comprises: arranging the O1 power adjustment values of the O1 position points with coordinates (e, 0) in order of increasing e values, arranging the O1 power adjustment values of the O1 position points with coordinates (e, 1) in order of increasing e values, and sequentially increasing the value of f until the O1 power adjustment values of the O1 position points with coordinates (e, O2-1) are arranged in order of increasing e values; or arranging the O2 power adjustment values of the O2 position points with coordinates (0, f) in order of increasing f values, arranging the O2 power adjustment values of the O2 position points with coordinates (1, f) in order of increasing f values, and sequentially increasing the value of e until the O2 power adjustment values of the O2 position points with coordinates (O1-1, f) are arranged in order of increasing f values.

[0181] Optionally, the sensing space comprises N position groups, each position group comprising O position points, N is the product of N0, N1 and N2, and O is the product of O0, O1 and O2; wherein N0 is the number of subcarriers used to send the sensing signal, N1 is the number of antenna ports in the horizontal direction of the two-dimensional array antenna of the second device, N2 is the number of antenna ports in the vertical direction of the two-dimensional array antenna, O0 is a subcarrier oversampling factor, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, and O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N0, N1, N2, O0, O1 and O2 are all integers greater than zero, and the second device is the device that sends the sensing signal.

[0182] Optionally, the N position groups are position groups in a three-dimensional coordinate system mapping a subcarrier dimension, a horizontal direction dimension of the two-dimensional array antenna, and a vertical direction dimension of the two-dimensional array antenna, a value of the subcarrier dimension is denoted by s, a range of s is between 0 and N0-1, a value of the horizontal direction dimension is denoted by m, a range of m is between 0 and N1-1, a value of the vertical direction dimension is denoted by n, a range of n is between 0 and N2-1, and a coordinate of a position group in the three-dimensional coordinate system is denoted by (s, m, n); in the first information, the power values of the Q position groups are arranged in a first order, and the first order comprises: arranging N1 power values of N1 position groups with a coordinate of (0, m, 0) in a sequence from small to large according to a value of m, arranging N1 power values of N1 position groups with a coordinate of (0, m, 1) in a sequence from small to large according to the value of m, and sequentially increasing the value of m until N1 power values of N1 position groups with a coordinate of (0, m, N2-1) are arranged in a sequence from small to large according to the value of m, then arranging N1 power values of N1 position groups with a coordinate of (1, m, 0) in a sequence from small to large according to the value of m, arranging N1 power values of N1 position groups with a coordinate of (2, m, 1) in a sequence from small to large according to the value of m, and sequentially increasing the value of s until N1 power values of N1 position groups with a coordinate of (N0-1, m, N2-1) are arranged in a sequence from small to large according to the value of m.

[0183] Optionally, a coordinate of each position point in each position group in the three-dimensional coordinate system is denoted by (g, e, f), in the position group with a coordinate of (0, 0, 0), a range of g is between 0 and O0-1, a range of e is between 0 and O1-1, and a range of f is between 0 and O2-1; in the first information, the plurality of power adjustment values in the group of power adjustment values are arranged in a second order, and the second order comprises: arranging O1 power adjustment values of O1 position points with a coordinate of (0, e, 0) in a sequence from small to large according to a value of e, arranging O1 power adjustment values of O1 position points with a coordinate of (0, e, 1) in a sequence from small to large according to the value of e, and sequentially increasing the value of e until O1 power adjustment values of O1 position points with a coordinate of (0, e, O2-1) are arranged in a sequence from small to large according to the value of e, then arranging O1 power adjustment values of O1 position points with a coordinate of (1, e, 0) in a sequence from small to large according to the value of e, arranging O1 power adjustment values of O1 position points with a coordinate of (2, e, 1) in a sequence from small to large according to the value of e, and sequentially increasing the value of g until O1 power adjustment values of O1 position points with a coordinate of (O0-1, e, O2-1) are arranged in a sequence from small to large according to the value of e.

[0184] Optionally, N0, N1, N2, O0, O1 and O2 are indicated by the second device.

[0185] In another possible implementation, the communication device 1200 can be configured to implement the steps and processes corresponding to the second device described above.

[0186] The transceiver module 1201 is configured to transmit the sensing signal, and receive first information, the first information including power values of Q position groups and a set of power adjustment values corresponding to each of the Q position groups, each position group including a plurality of position points that are adjacent in space, and Q being an integer greater than zero; and the processing module 1202 is configured to determine a sensing result according to the first information.

[0187] Optionally, the Q position groups are all position groups of a sensing space.

[0188] Optionally, the Q position groups are part of all position groups included in a sensing space, and the first information further includes respective identifiers of each of the part of position groups.

[0189] Optionally, the power value of each of the Q position groups is greater than or equal to a first threshold value.

[0190] Optionally, the sensing space includes M position groups, each of which includes P position points, M being a product of N1 and N2, and P being a product of O1 and O2; N1 is a number of antenna ports in a horizontal direction of a two-dimensional array antenna of the second device, N2 is a number of antenna ports in a vertical direction of the two-dimensional array antenna, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, and O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N1, N2, O1 and O2 are all integers greater than zero, and the second device is a device that transmits the sensing signal.

[0191] Optionally, the M position groups are position groups in a two-dimensional coordinate system mapping horizontal direction dimensions on the two-dimensional array antenna and vertical direction dimensions on the two-dimensional array antenna, the value of the horizontal direction dimension is denoted by m, m ranges between 0 and N1-1, the value of the vertical direction dimension is denoted by n, n ranges between 0 and N2-1, the coordinate of a position group in the two-dimensional coordinate system is denoted by (m, n); in the first information, the power values of the Q position groups are arranged in a first order, the first order comprises: arranging the N1 power values of the N1 position groups with the coordinate (m, 0) in the order of the value of m from small to large, then arranging the N1 power values of the N1 position groups with the coordinate (m, 1) in the order of the value of m from small to large, and increasing the value of n successively until the N1 power values of the N1 position groups with the coordinate (m, N2-1) are arranged in the order of the value of m from small to large; or, arranging the N2 power values of the N2 position groups with the coordinate (0, n) in the order of the value of n from small to large, then arranging the N2 power values of the N2 position groups with the coordinate (1, n) in the order of the value of n from small to large, and increasing the value of m successively until the N2 power values of the N2 position groups with the coordinate (N1-1, n) are arranged in the order of the value of n from small to large.

[0192] Optionally, the coordinate of each position point in each position group in the two-dimensional coordinate system is denoted by (e, f), in the position group with the coordinate (0, 0), the value of e ranges between 0 and O1-1, the value of f ranges between 0 and O2-1; in the first information, the multiple power adjustment values in the group of power adjustment values are arranged in a second order, the second order comprises: arranging the O1 power adjustment values of the O1 position points with the coordinate (e, 0) in the order of the value of e from small to large, then arranging the O1 power adjustment values of the O1 position points with the coordinate (e, 1) in the order of the value of e from small to large, and increasing the value of f successively until the O1 power adjustment values of the O1 position points with the coordinate (e, O2-1) are arranged in the order of the value of e from small to large; or, arranging the O2 power adjustment values of the O2 position points with the coordinate (0, f) in the order of the value of f from small to large, then arranging the O2 power adjustment values of the O2 position points with the coordinate (1, f) in the order of the value of f from small to large, and increasing the value of e successively until the O2 power adjustment values of the O2 position points with the coordinate (O1-1, f) are arranged in the order of the value of f from small to large.

[0193] Optionally, the sensing space comprises N position groups, each of which comprises O position points, N is a product of N0, N1 and N2, O is a product of O0, O1 and O2; wherein N0 is a number of subcarriers used for transmitting the sensing signal, N1 is a number of antenna ports in a horizontal direction of the two-dimensional array antenna of the second device, N2 is a number of antenna ports in a vertical direction of the two-dimensional array antenna, O0 is a subcarrier oversampling factor, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N0, N1, N2, O0, O1 and O2 are all integers greater than zero, and the second device is the device transmitting the sensing signal.

[0194] Optionally, the N position groups are position groups in a three-dimensional coordinate system mapped in a subcarrier dimension, a horizontal direction dimension of the two-dimensional array antenna and a vertical direction dimension of the two-dimensional array antenna, the subcarrier dimension is denoted by s, s ranges between 0 and N0-1, the horizontal direction dimension is denoted by m, m ranges between 0 and N1-1, the vertical direction dimension is denoted by n, n ranges between 0 and N2-1, and the coordinate of a position group in the three-dimensional coordinate system is denoted by (s, m, n); in the first information, the power values of the Q position groups are arranged in the first order, the first order comprises: arranging N1 power values of N1 position groups with the coordinate (0, m, 0) in the order of increasing m value, arranging N1 power values of N1 position groups with the coordinate (0, m, 1) in the order of increasing m value, and increasing the value of m successively until arranging N1 power values of N1 position groups with the coordinate (0, m, N2-1) in the order of increasing m value, then arranging N1 power values of N1 position groups with the coordinate (1, m, 0) in the order of increasing m value, arranging N1 power values of N1 position groups with the coordinate (2, m, 1) in the order of increasing m value, and increasing the value of s successively until arranging N1 power values of N1 position groups with the coordinate (N0-1, m, N2-1) in the order of increasing m value.

[0195] Optionally, the coordinates of each position point in each position group in the three-dimensional coordinate system are represented by (g, e, f), and in the position group with coordinates (0, 0, 0), g ranges from 0 to O0-1, e ranges from 0 to O1-1, and f ranges from 0 to O2-1; in the first information, the plurality of power adjustment values in the group of power adjustment values are arranged in the second order, and the second order comprises: arranging the O1 power adjustment values of the O1 position points with coordinates (0, e, 0) in the order of increasing e value, arranging the O1 power adjustment values of the O1 position points with coordinates (0, e, 1) in the order of increasing e value, and sequentially increasing the e value until the O1 power adjustment values of the O1 position points with coordinates (0, e, O2-1) are arranged in the order of increasing e value, then arranging the O1 power adjustment values of the O1 position points with coordinates (1, e, 0) in the order of increasing e value, arranging the O1 power adjustment values of the O1 position points with coordinates (2, e, 1) in the order of increasing e value, and sequentially increasing the g value until the O1 power adjustment values of the O1 position points with coordinates (O0-1, e, O2-1) are arranged in the order of increasing e value.

[0196] Optionally, N0, N1, N2, O0, O1 and O2 are indicated by the second device.

[0197] It should be understood that the apparatus 1200 herein is embodied in the form of functional modules. The term "module" herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor, or a group processor and the like) and a memory for executing one or more software or firmware programs, a combination of logic circuitry and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the apparatus 1200 can be embodied as the first device or the second device in the above-described embodiments, or the functions described in the above-described embodiments can be integrated in the apparatus 1200, and the apparatus 1200 can be used to execute the respective processes and / or steps corresponding to the first device or the second device in the above-described method embodiments. To avoid repetition, details are not described here.

[0198] The apparatus 1200 described above has the functions of performing the corresponding steps of the first device or the second device in the above-described method; the above-mentioned functions can be realized by hardware, or realized by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

[0199] In embodiments of the present application, the apparatus 1200 in FIG. 12 can also be a chip or chip system, such as a system on a chip (SoC).

[0200] FIG. 13 shows a schematic block diagram of a communication apparatus 1300 according to an embodiment of the present application. The apparatus 1300 includes a processor 1301, a transceiver 1302 and a memory 1303. The processor 1301, the transceiver 1302 and the memory 1303 communicate with each other by an internal connection path. The memory 1303 is configured to store instructions. The processor 1301 is configured to execute the instructions stored in the memory 1303 to control the transceiver 1302 to transmit and / or receive signals.

[0201] It should be understood that the apparatus 1300 can be specifically the first apparatus or the second apparatus in the above-described embodiments, and can be used to execute the steps and / or procedures corresponding to the first apparatus or the second apparatus in the above-described method embodiments. Optionally, the memory 1303 can include a read-only memory and a random access memory, and provide instructions and data for the processor. A part of the memory can also include a non-volatile random access memory. For example, the memory can also store device type information. The processor 1301 can be configured to execute the instructions stored in the memory, and when the processor 1301 executes the instructions stored in the memory, the processor 1301 is configured to execute the steps and / or procedures of the above-described method embodiments. The transceiver 1302 can include a transmitter and a receiver. The transmitter can be configured to implement the steps and / or procedures corresponding to the transmitter for executing the transmitting actions of the above-described transceiver. The receiver can be configured to implement the steps and / or procedures corresponding to the receiver for executing the receiving actions of the above-described transceiver.

[0202] It should be understood that in the embodiments 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 gates 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.

[0203] In the implementation process, each step of the above method can be completed by integrated logic circuit of hardware in the processor or instruction in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware processor execution completion, or executed by hardware and software module combination in the processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, register, and other mature storage media in the art. The storage medium is located in the memory, and the processor executes the instruction in the memory, and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0204] The present application also provides a computer readable storage medium for storing a computer program for implementing the method shown in the above method embodiment.

[0205] The present application also provides a computer program product comprising a computer program (also referred to as code or instruction), which can execute the method shown in the above method embodiment when the computer program runs on the computer.

[0206] The present application also provides a communication system comprising a first device and a second device, the first device and the second device can interactively implement the method shown in the above method embodiment.

[0207] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or combination of computer software and electronic hardware. Whether the functions are executed in hardware or software mode depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0208] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be described here.

[0209] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the division of the above-described device embodiments is merely a 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 in electrical, mechanical or other forms.

[0210] 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.

[0211] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can exist physically as a separate unit, or two or more units can be integrated in one unit.

[0212] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in the embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and various other media that can store program codes.

Claims

1. A communication method characterized by comprising: The method applied to a first device comprises: receiving a sensing signal; sending first information based on the sensing signal, the first information comprising power values of Q position groups, and a set of power adjustment values corresponding to each of the Q position groups, each of the position groups comprising a plurality of position points, the plurality of position points comprised in each of the position groups being adjacent in space, Q being an integer greater than zero.

2. A communication method characterized by comprising: The method applied to a second device comprises: sending a sensing signal; receiving first information, the first information comprising power values of Q position groups, and a set of power adjustment values corresponding to each of the Q position groups, each of the position groups comprising a plurality of position points, the plurality of position points comprised in each of the position groups being adjacent in space, Q being an integer greater than zero; determining a sensing result according to the first information.

3. The method according to claim 1 or 2, characterized in that, The Q position groups are all position groups of a sensing space.

4. The method according to claim 1 or 2, characterized in that, The Q position groups are part of all position groups comprised in a sensing space, and the first information further comprises respective identities of each of the Q position groups.

5. The method of claim 4, wherein, The power value of each of the Q position groups is greater than or equal to a first threshold value.

6. The method according to any one of claims 1 to 5, characterized in that, The sensing space comprises M position groups, each of the position groups comprising P position points, M being a product of N1 and N2, and P being a product of O1 and O2; wherein N1 is a number of antenna ports in a horizontal direction of a two-dimensional array antenna of the second device, N2 is a number of antenna ports in a vertical direction of the two-dimensional array antenna, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, and O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, N1, N2, O1 and O2 are all integers greater than zero.

7. The method of claim 6, wherein, The M position groups are position groups in a two-dimensional coordinate system mapped in a horizontal direction dimension of the two-dimensional array antenna and a vertical direction dimension of the two-dimensional array antenna, a value of the horizontal direction dimension is represented by m, the range of m is between 0 and N1-1, a value of the vertical direction dimension is represented by n, the range of n is between 0 and N2-1, and a coordinate of the position group in the two-dimensional coordinate system is represented by (m, n); in the first information, the power values of the Q position groups are arranged in a first order, the first order comprising: arranging N1 power values of N1 position groups with a coordinate of (m, 0) in an order of increasing values of m from small to large, then arranging N1 power values of N1 position groups with a coordinate of (m, 1) in an order of increasing values of m from small to large, and increasing the value of n successively until arranging N1 power values of N1 position groups with a coordinate of (m, N2-1) in an order of increasing values of m from small to large; or, N2 power values of N2 position groups with coordinates of (0, n) are arranged in turn according to the order from small to large of the value of n, and then N2 power values of N2 position groups with coordinates of (1, n) are arranged in turn according to the order from small to large of the value of n, and the value of m is increased successively until N2 power values of N2 position groups with coordinates of (N1-1, n) are arranged in turn according to the order from small to large of the value of n.

8. The method of claim 7, wherein, The coordinates of each position point in each position group in the two-dimensional coordinate system are represented by (e, f), and in the position group with coordinates of (0, 0), the range of e is between 0 and O1-1, and the range of f is between 0 and O2-1. In the first information, the plurality of power adjustment values in the group of power adjustment values are arranged according to a second order, and the second order includes: O1 power adjustment values of O1 position points with coordinates of (e, 0) are arranged in turn according to the order from small to large of the value of e, and then O1 power adjustment values of O1 position points with coordinates of (e, 1) are arranged in turn according to the order from small to large of the value of e, and the value of f is increased successively until O1 power adjustment values of O1 position points with coordinates of (e, O2-1) are arranged in turn according to the order from small to large of the value of e. Or, O2 power adjustment values of O2 position points with coordinates of (0, f) are arranged in turn according to the order from small to large of the value of f, and then O2 power adjustment values of O2 position points with coordinates of (1, f) are arranged in turn according to the order from small to large of the value of f, and the value of e is increased successively until O2 power adjustment values of O2 position points with coordinates of (O1-1, f) are arranged in turn according to the order from small to large of the value of f.

9. The method according to any one of claims 1 to 5, characterized in that, The sensing space includes N position groups, and each of the position groups includes O position points, N is the product of N0, N1 and N2, and O is the product of O0, O1 and O2. N0 is the number of subcarriers used for transmitting the sensing signal, N1 is the number of antenna ports in the horizontal direction of the two-dimensional array antenna of the second device, N2 is the number of antenna ports in the vertical direction of the two-dimensional array antenna, O0 is a subcarrier oversampling factor, O1 is an oversampling factor in the horizontal direction of the two-dimensional array antenna, and O2 is an oversampling factor in the vertical direction of the two-dimensional array antenna, and N0, N1, N2, O0, O1 and O2 are all integers greater than zero.

10. The method of claim 9, wherein, The N position groups are position groups in a three-dimensional coordinate system mapped in a subcarrier dimension, a horizontal direction dimension of the two-dimensional array antenna, and a vertical direction dimension of the two-dimensional array antenna, the value of the subcarrier dimension is represented by s, the range of s is between 0 and N0-1, the value of the horizontal direction dimension is represented by m, the range of m is between 0 and N1-1, the value of the vertical direction dimension is represented by n, the range of n is between 0 and N2-1, and the coordinates of the position groups in the three-dimensional coordinate system are represented by (s, m, n). In the first information, the power values of the Q position groups are arranged in a first order, and the first order comprises: arranging N1 power values of N1 position groups with coordinates (0, m, 0) in order of m values from small to large, then arranging N1 power values of N1 position groups with coordinates (0, m, 1) in order of m values from small to large, and increasing the value of m gradually until N1 power values of N1 position groups with coordinates (0, m, N2-1) are arranged in order of m values from small to large, then arranging N1 power values of N1 position groups with coordinates (1, m, 0) in order of m values from small to large, then arranging N1 power values of N1 position groups with coordinates (2, m, 1) in order of m values from small to large, and increasing the value of s gradually until N1 power values of N1 position groups with coordinates (N0-1, m, N2-1) are arranged in order of m values from small to large.

11. The method of claim 10, wherein, In each position group, the coordinates of each position point in the three-dimensional coordinate system are represented by (g, e, f), and in the position group with coordinates (0, 0, 0), the range of g is 0~O0-1, the range of e is 0~O1-1, and the range of f is 0~O2-1. In the first information, the power values of the Q position groups are arranged in a first order, and the first order comprises: arranging O1 power adjustment values of O1 position points with coordinates (0, e, 0) in order of e values from small to large, then arranging O1 power adjustment values of O1 position points with coordinates (0, e, 1) in order of e values from small to large, and increasing the value of e gradually until O1 power adjustment values of O1 position points with coordinates (0, e, O2-1) are arranged in order of e values from small to large, then arranging O1 power adjustment values of O1 position points with coordinates (1, e, 0) in order of e values from small to large, then arranging O1 power adjustment values of O1 position points with coordinates (2, e, 1) in order of e values from small to large, and increasing the value of g gradually until O1 power adjustment values of O1 position points with coordinates (O0-1, e, O2-1) are arranged in order of e values from small to large.

12. The method according to any one of claims 9 to 11, characterized in that, N0, N1, N2, O0, O1, and O2 are indicated by the second device.

13. A communications device, characterized by A module for performing the method of any one of claims 1 to 12.

14. A communications device, characterized by A module for performing the method of any one of claims 1 to 12. A processor coupled with the memory, the memory storing computer-executable instructions, and the processor executing the computer-executable instructions stored in the memory to cause the processor to perform the method of any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that, A computer program for storing instructions for implementing the method of any one of claims 1 to 12.

16. A computer program product comprising computer program code in said computer program product, characterised in that, When the computer program code is run on a computer, it causes the computer to implement the method of any one of claims 1 to 12.

17. A communication system, characterized by The communication system comprises a first device and a second device, the first device being in communication with the second device, the first device being configured to perform the steps performed by the first device in the method of any one of claims 1 to 12, the second device being configured to perform the steps performed by the second device in the method of any one of claims 1 to 12.

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