Communication method, apparatus and system

Abstract

A communication method, apparatus and system. The method comprises: acquiring first configuration information, and on the basis of the first configuration information, sending L sensing signals, wherein the first configuration information is used for indicating M CDM groups, each of the M CDM groups comprises a plurality of ports, the L sensing signals correspond to the plurality of ports in at least one of the M CDM groups, and L is a positive integer less than or equal to M. A plurality of ports included in at least one CDM group is configured, such that sensing signals are sent via the plurality of ports, thereby improving the communication performance and sensing performance, and improving spatial-domain gain.

Description

Communication method, apparatus and system

[0001] The present application claims priority from the Chinese patent application No. 202410710743.1 filed on June 3, 2024, and entitled "Communication method, apparatus and system", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and more particularly, to a communication method, apparatus and system. BACKGROUND

[0003] With the continuous development of communication technology and wireless sensing technology, the integration of communication technology and wireless sensing technology, i.e., integrated sensing and communication (ISAC), has become a popular research direction. In a wireless sensing system, the wireless signals transmitted by a communication device have both sensing and communication capabilities. For example, a transmitting end can transmit a sensing signal for sensing measurement to a receiving end to achieve sensing of a sensing target, such as sensing the surrounding environment, the moving speed of an object, the distance, etc.

[0004] Communication often pursues higher transmission efficiency, or in other words, higher spectrum utilization, while sensing pursues higher detection accuracy of the sensing target, and the requirements of the two are usually contradictory. Currently, research is mainly focused on the configuration of sensing signals corresponding to a single port, and does not involve the configuration scheme of sensing signals corresponding to multiple ports. SUMMARY

[0005] The present application provides a communication method, apparatus and system to improve the communication performance and sensing performance.

[0006] In a first aspect, a communication method is provided. The method can be performed by a first apparatus. In the absence of special description, the "first apparatus" in the present application can refer to the first apparatus itself (e.g., a terminal device or a network device), a component (e.g., a communication module, a processor, a circuit, a chip, or a chip system, etc.) in the first apparatus, or a logic module or software capable of realizing all or part of the functions of the first apparatus.

[0007] The method comprises: obtaining first configuration information, the first configuration information being used to indicate M code division multiplexing (CDM) groups, wherein each of the M CDM groups comprises a plurality of ports, and the plurality of ports in each CDM group occupy the same frequency domain resource; and transmitting L sensing signals according to the first configuration information, wherein the L sensing signals correspond to the plurality of ports in at least one of the M CDM groups, M is an integer greater than or equal to 1, and L is a positive integer less than or equal to M.

[0008] Optionally, the plurality of ports in each CDM group occupy the same time domain resource and frequency domain resource, and code division is implemented. For example, there is a CDM group 0 comprising 2 ports, and the 2 ports occupy the same 2 resource elements (REs). The 2 ports can apply orthogonal codes [1, 1] and [1, -1] to distinguish each other on the 2 REs. Optionally, the CDM group can also be referred to as a CDM block.

[0009] Optionally, the first configuration information can be predefined or preconfigured, and the present application does not limit this.

[0010] Based on the above scheme, the first device can determine the M CDM groups by obtaining the first configuration information, and thus determine the plurality of ports in each CDM group. Further, the sensing signal can be transmitted based on the plurality of ports in at least one CDM group, and communication and / or sensing between the first device and the second device is implemented. In this implementation, a configuration scheme of the sensing signal of the plurality of ports is provided, so that the first device can multiplex more sensing signals on the time-frequency resource, and the sensing performance and spatial gain are improved.

[0011] In a possible design, a de-modulation reference signal (DMRS) and a sensing signal correspond to the same port.

[0012] Based on the above scheme, the port used to transmit the DMRS is the same as the port used to transmit the sensing signal, or in other words, the same port can be used to transmit the DMRS and the sensing signal. In this implementation, the current architecture of the plurality of DMRS ports is used, and the standard change is small, and it is easier to implement.

[0013] In a possible design, the plurality of ports in each CDM group are orthogonal through an orthogonal cover code (OCC).

[0014] Based on the above scheme, multiple ports in the same CDM group can be orthogonal in the form of OCC to realize code division. That is, by designing the orthogonality of the sensing signals corresponding to multiple ports, the stability of the sensing signal transmission is ensured, and the sensing performance is improved.

[0015] In a possible design, the sensing signal includes sensing data and / or a sensing reference signal, where the sensing data is obtained through quadrature phase shift keying (QPSK) modulation or quadrature amplitude modulation (QAM); and the sensing reference signal is obtained through QPSK modulation.

[0016] In a possible design, the at least one CDM group is composed of M1 CDM groups, and the method further includes: when M1 is less than M, repeating transmission of one or more of the L sensing signals on the subcarriers corresponding to the first port, or performing power boosting on the L sensing signals; where the first port is at least one port in the M-M1 CDM groups other than the M1 CDM groups, and M1 is a positive integer.

[0017] Based on the above scheme, for the M CDM groups configured according to the first configuration information, the first device can use M1 CDM groups in the M CDM groups to transmit the sensing signal, and for the time-frequency resources corresponding to the M-M1 CDM groups, the first device can repeat transmission of one or more of the L sensing signals, or transmit other signals, or maintain empty subcarriers, which can improve the stability of the sensing signal transmission, increase the system throughput, and improve the transmission performance and the sensing performance.

[0018] In a possible design, the method further includes: receiving first indication information, where the first indication information is used to indicate that the subcarriers corresponding to the first port are used for repeated transmission of one or more of the L sensing signals; or the first indication information is used to indicate that the L sensing signals are subjected to power boosting.

[0019] Based on the above scheme, the first device can determine the processing mode of the spatial subcarriers, including repeated transmission or power boosting, through the received first indication information, to improve the transmission performance and the sensing performance of the sensing signal.

[0020] In a possible design, the power boosting on the L sensing signals includes: performing power boosting on the L sensing signals according to second indication information; where the second indication information is associated with at least one of the subcarriers corresponding to the at least one port in the M-M1 CDM groups, the subcarriers corresponding to the at least one port in the M1 CDM groups, or the at least one port in the M CDM groups.

[0021] Optionally, the second indication information can be determined by the first device itself or indicated by the second device, which is not limited in the present application.

[0022] For example, assuming that there are 4 subcarriers, and 3 subcarriers are used to transmit the sensing signal, the first device can allocate the power of the empty subcarrier to the other 3 used subcarriers, and amplify the power by 1 / 3, so as to improve the sensing performance and transmission performance.

[0023] In a possible design, the plurality of ports includes sensing ports, and the method further includes: obtaining second configuration information, the second configuration information being used to indicate a correspondence between a number K of sensing ports and the M CDM groups, K being an integer greater than or equal to 2.

[0024] Based on the above scheme, the first device can determine the correspondence between the sensing ports and the CDM groups for different numbers of sensing ports by obtaining the second configuration information. Optionally, the second configuration information can be predefined or preconfigured, which is not limited in the present application.

[0025] In a possible design, when M is equal to 2 and K is less than or equal to 4, the second configuration information is further used to indicate one of the M CDM groups. This implementation is applicable to DMRS configuration type 1 and / or DMRS configuration type 2.

[0026] Based on the above scheme, for different numbers of CDM groups and different numbers of sensing ports, the sensing ports can be preferentially filled in one CDM group or preferentially configured in the same CDM group when the number of sensing ports is less than or equal to 4.

[0027] In a possible design, when M is equal to 2 and K is greater than 4 and less than or equal to 8, each of the M CDM groups contains or sensing ports, represents the floor function. This implementation is applicable to DMRS configuration type 1 and / or DMRS configuration type 2.

[0028] Based on the above scheme, for different numbers of CDM groups and different numbers of sensing ports, the sensing ports can be as evenly as possible allocated to the plurality of CDM groups when the number of sensing ports is greater than 4 and less than or equal to 8, and the sensing ports that cannot be evenly allocated can be randomly allocated to any one of the CDM groups, so as to ensure that the number of sensing ports contained in the plurality of CDM groups is equal or maximally equal.

[0029] In a possible design, the method further includes: when M is equal to 3 and K is greater than 8 and less than or equal to 12, each of the M CDM groups contains one or more one or more sensing ports, denotes rounding down. This implementation is applicable to DMRS configuration type 2.

[0030] Based on the above scheme, for different numbers of CDM groups and different numbers of sensing ports, the sensing ports can be evenly allocated to the multiple CDM groups as much as possible when the number of sensing ports is greater than 8 and less than or equal to 12, and the sensing ports that cannot be evenly allocated can be randomly allocated to any one or more CDM groups, so as to ensure that the number of sensing ports contained in the multiple CDM groups is equal or maximally equal.

[0031] In a second aspect, a communication method is provided. The method can be performed by a second device. Unless specifically stated, the "second device" in the present application can refer to the second device itself (for example, a network device or a terminal device), a component (for example, a communication module, a processor, a circuit, a chip, or a chip system) in the second device, or a logic module or software capable of realizing all or part of the functions of the second device.

[0032] The method includes: obtaining first configuration information, the first configuration information being used to indicate M CDM groups, wherein each of the M CDM groups includes multiple ports, and the multiple ports in each CDM group occupy the same frequency domain resource; and receiving N sensing signals according to the first configuration information, wherein the L sensing signals correspond to the multiple ports in at least one of the M CDM groups, and L is a positive integer less than or equal to M.

[0033] Based on the above scheme, the second device can determine the M CDM groups by obtaining the first configuration information, and thus determine the multiple ports in each CDM group. Further, the second device can receive the sensing signals based on the multiple ports in at least one CDM group, to realize the communication and / or sensing between the first device and the second device. In this implementation, a configuration scheme of the sensing signals of multiple ports is provided, so that the second device can multiplex more sensing signals on the time-frequency resource, to improve the sensing performance and spatial gain.

[0034] In a possible design, the DMRS and the sensing signal correspond to the same port.

[0035] In a possible design, the multiple ports in each CDM group are orthogonal through OCC.

[0036] In a possible design, the sensing signal includes sensing data and / or a sensing reference signal, wherein the sensing data is obtained through QPSK modulation or QAM; and the sensing reference signal is obtained through QPSK modulation.

[0037] In one possible design, the at least one CDM group consists of M1 CDM groups, and the method further includes repeating receiving one or more of the N perception signals on the subcarriers corresponding to the first port when M1 is less than M, where the first port is at least one port in the M-M1 CDM groups other than the M1 CDM groups, and M1 is a positive integer.

[0038] In one possible design, the method further includes transmitting the first indication information, where the first indication information indicates that the subcarriers corresponding to the first port are used for repeating transmitting one or more of the L perception signals, or the first indication information indicates that the L perception signals are power boosted.

[0039] In one possible design, the multiple ports include perception ports, and the method further includes obtaining second configuration information, where the second configuration information indicates a correspondence between a number K of the perception ports and the M CDM groups, K is an integer greater than or equal to 2, and transmitting the second configuration information.

[0040] In one possible design, when M is equal to 2 and K is less than or equal to 4, the second configuration information further indicates one of the M CDM groups.

[0041] In one possible design, when M is equal to 2 and K is greater than 4 and less than or equal to 8, each of the M CDM groups contains or perception ports, represents a floor operation.

[0042] In one possible design, when M is equal to 3 and K is greater than 8 and less than or equal to 12, each of the M CDM groups contains or perception ports, represents a floor operation.

[0043] The second aspect and certain implementation forms of the second aspect and corresponding advantages can refer to the description related to the first aspect, and will not be described here.

[0044] In a third aspect, a communication apparatus is provided, which has the functions of the first aspect, for example, the communication apparatus includes modules or units or means corresponding to the operations of the first aspect, which can be implemented by software, or by hardware, or by a combination of software and hardware.

[0045] Exemplarily, the communication apparatus can be the first apparatus, or a module or unit (for example, a chip, or a chip system, or a circuit) corresponding to the method described in the first aspect, or an apparatus capable of matching the first apparatus.

[0046] In a possible implementation, the communication apparatus comprises a transceiver (or a communication module) and a processing unit (or a processing module) connected to the transceiver.

[0047] Exemplarily, the processing unit is configured to obtain first configuration information, the first configuration information being used to indicate M CDM groups, wherein each of the M CDM groups comprises a plurality of ports, and the plurality of ports in each CDM group occupy the same frequency domain resource; and the transceiver is configured to transmit L sensing signals according to the first configuration information, wherein the L sensing signals correspond to the plurality of ports in at least one of the M CDM groups, and L is a positive integer less than or equal to M.

[0048] In a possible design, the DMRS and the sensing signal correspond to the same port.

[0049] In a possible design, the plurality of ports in each CDM group are orthogonal through OCC.

[0050] In a possible design, the sensing signal comprises sensing data and / or a sensing reference signal, wherein the sensing data is obtained through QPSK modulation or QAM; and the sensing reference signal is obtained through QPSK modulation.

[0051] In a possible design, the at least one CDM group is composed of M1 CDM groups, when M1 is less than M, the transceiver is further configured to repeatedly transmit one or more of the L sensing signals on the subcarriers corresponding to the first port, or the processing unit is further configured to perform power boosting on the L sensing signals; wherein the first port is at least one port in the M-M1 CDM groups other than the M1 CDM groups, and M1 is a positive integer.

[0052] In a possible design, the transceiver is further configured to receive first indication information, wherein the first indication information is used to indicate that the subcarriers corresponding to the first port are used for repeatedly transmitting one or more of the L sensing signals; or the first indication information is used to indicate that the L sensing signals are subjected to power boosting.

[0053] In one possible design, the processing unit is further configured to perform power boosting on the L perceived signals according to second indication information, where the second indication information is associated with subcarriers corresponding to at least one port in the M-M1 CDM groups, subcarriers corresponding to at least one port in the M1 CDM groups, or at least one of the M CDM groups.

[0054] In one possible design, the multiple ports include perceived ports, and the processing unit is further configured to obtain second configuration information, where the second configuration information indicates a correspondence between a number K of the perceived ports and the M CDM groups, and K is an integer greater than or equal to 2.

[0055] In one possible design, when M is equal to 2 and K is less than or equal to 4, the second configuration information further indicates one of the M CDM groups.

[0056] In one possible design, when M is equal to 2 and K is greater than 4 and less than or equal to 8, each of the M CDM groups contains or perceived ports, represents a floor operation.

[0057] In one possible design, the method further includes, when M is equal to 3 and K is greater than 8 and less than or equal to 12, each of the M CDM groups contains or perceived ports, represents a floor operation.

[0058] In a fourth aspect, a communication apparatus is provided, which has the function of the second aspect, e.g., the communication apparatus includes modules or units or means corresponding to the operations of the second aspect, which can be implemented in software, or in hardware, or in a combination of software and hardware.

[0059] By way of example, the communication apparatus can be the second apparatus, or a module or unit (e.g., a chip, or a chip system, or a circuit) corresponding to the method or operation or step or action described in the second aspect, or an apparatus capable of matching the second apparatus.

[0060] In one possible implementation, the communication apparatus includes a transceiver (or a communication module), and a processing unit (or a processing module) connected to the transceiver.

[0061] Exemplarily, the processing unit is configured to acquire first configuration information, the first configuration information being used to indicate M CDM groups, wherein each of the M CDM groups comprises a plurality of ports, and the plurality of ports in each CDM group occupy same frequency domain resources; and the transceiver is configured to receive N sensing signals according to the first configuration information, wherein the L sensing signals correspond to the plurality of ports in at least one of the M CDM groups, and L is a positive integer less than or equal to M.

[0062] In a possible design, the DMRS and the sensing signal correspond to same ports.

[0063] In a possible design, the plurality of ports in each CDM group are orthogonal through an orthogonal cover code (OCC).

[0064] In a possible design, the sensing signal comprises sensing data and / or a sensing reference signal, wherein the sensing data is obtained through QPSK modulation or QAM; and the sensing reference signal is obtained through QPSK modulation.

[0065] In a possible design, the at least one CDM group is composed of M1 CDM groups, and the transceiver is further configured to, when M1 is less than M, repeatedly receive one or more of the N sensing signals on subcarriers corresponding to first ports, wherein the first ports are at least one port in M-M1 CDM groups other than the M1 CDM groups in the M CDM groups, and M1 is a positive integer.

[0066] In a possible design, the transceiver is further configured to send first indication information, wherein the first indication information is used to indicate that the subcarriers corresponding to the first ports are used for repeatedly transmitting one or more of the L sensing signals; or the first indication information is used to indicate that the L sensing signals are power boosted.

[0067] In a possible design, the plurality of ports comprise sensing ports, the processing unit is further configured to acquire second configuration information, the second configuration information being used to indicate a correspondence between a number K of the sensing ports and the M CDM groups, and K is an integer greater than or equal to 2; and the transceiver is further configured to send the second configuration information.

[0068] In a possible design, when M is equal to 2 and K is less than or equal to 4, the second configuration information is further used to indicate one CDM group in the M CDM groups.

[0069] In a possible design, when M is equal to 2 and K is greater than 4 and less than or equal to 8, each of the M CDM groups contains or sensing ports, represents a floor operation.

[0070] In one possible design, when M is equal to 3, and K is greater than 8 and less than or equal to 12, each of the M CDM groups includes one or one or represents a floor operation.

[0071] In a fifth aspect, a communication apparatus is provided. The communication apparatus can be the first apparatus or the second apparatus. The communication apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver to transceive signals. The memory is configured to store a computer program. The processor is configured to invoke and execute the computer program from the memory, so that the communication apparatus performs the method in any possible implementation of the first aspect or the second aspect.

[0072] Optionally, the processor is one or more, and the memory is one or more.

[0073] Optionally, the memory can be integrated with the processor, or the memory is configured separately from the processor.

[0074] Optionally, the communication apparatus further includes a transmitter (transmitter) and a receiver (receiver).

[0075] In a sixth aspect, a communication apparatus is provided. The communication apparatus includes a memory and one or more processors. The memory is configured to store part or all of necessary computer programs or instructions for implementing the functions of the first aspect or the second aspect. The one or more processors are configured to execute the computer programs or instructions, so that the communication apparatus implements the method in any possible design or implementation of the first aspect or the second aspect.

[0076] In one possible design, the communication apparatus can further include an interface circuit, and the processor is configured to communicate with other apparatuses or components through the interface circuit.

[0077] In one possible design, the communication apparatus can further include the memory.

[0078] The communication apparatus can be a terminal, or a communication module in the terminal, or a chip responsible for communication functions in the terminal, such as a Modem chip (also known as a baseband chip), or a system on chip (SoC) chip or a system in a package (SIP) chip containing a modem module. For example, the terminal includes a terminal device.

[0079] The communication device can be a network device, or a communication module in the network device, or a circuit or chip responsible for communication functions in the network device, or a functional module capable of invoking and executing a program in the network device.

[0080] In a seventh aspect, a communication system is provided. The communication system includes a first device and / or a second device, wherein the first device is configured to perform the method in any possible implementation of the first aspect, and the second device is configured to perform the method in any possible implementation of the second aspect.

[0081] For example, the first device or the second device can be a terminal device, or a chip or circuit in the terminal device, or a functional module capable of invoking and executing a program in the terminal device; or the first device or the second device can be a network device, or a chip or circuit in the network device, or a central unit (CU) or a distributed unit (DU) in the network device, or a functional module capable of invoking and executing a program in the network device.

[0082] In an eighth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores computer program codes or instructions, so that the method in any possible implementation of the first aspect or the second aspect is performed, for example, when a computer reads and executes the computer program codes or instructions.

[0083] In a ninth aspect, a computer program product is provided. The computer program product includes computer program codes or instructions, so that the method in any possible implementation of the first aspect or the second aspect is performed. For example, when a computer reads and executes the computer program product, the method in any possible implementation of the first aspect or the second aspect is performed.

[0084] In a tenth aspect, a computer program is provided. When the computer program is executed, the method in any possible implementation of the first aspect or the second aspect is performed.

[0085] The beneficial effects of the third aspect to the tenth aspect can refer to the first aspect or the second aspect and any possible implementation thereof, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0086] FIGS. 1 to 4 are schematic diagrams of a communication system suitable for embodiments of the present application;

[0087] FIG. 5 shows a scenario diagram of communication and perception integration;

[0088] FIG. 6 shows a distribution diagram of a sensing reference signal and a data signal;

[0089] FIG. 7 is an interaction flow diagram of a communication method according to an embodiment of the present application;

[0090] FIG. 8 shows a multi-port structure diagram of coexistence of a DMRS port and a sensing signal port;

[0091] FIG. 9 is a distribution diagram of a DMRS and a sensing data on a time-frequency resource according to an embodiment of the present application;

[0092] FIG. 10 is a configuration diagram of a sensing signal under a multi-port according to an embodiment of the present application;

[0093] FIG. 11 is a configuration diagram of a sensing signal under a multi-port according to another embodiment of the present application;

[0094] FIG. 12 is a processing scheme diagram of a plurality of ports not being used according to an embodiment of the present application;

[0095] FIG. 13 is a schematic block diagram of a communication apparatus according to an embodiment of the present application;

[0096] FIG. 14 is a schematic block diagram of another communication apparatus according to an embodiment of the present application;

[0097] FIG. 15 is a schematic block diagram of a chip system according to an embodiment of the present application;

[0098] FIG. 16 is a schematic block diagram of another chip system according to an embodiment of the present application. DETAILED DESCRIPTION

[0099] For the convenience of understanding the embodiments of the present application, the following points are explained:

[0100] (1) In the present application, the terms and / or descriptions of different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0101] (2) In the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship of "and / or" between the associated objects indicates that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. In the textual description of the present application, the character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single item 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 and c can be single or multiple.

[0102] (3) In the present application, "first", "second", and various numerical numbers (for example, #1, #2, etc.) indicate the differentiation for the convenience of description, and are not used to limit the scope of the embodiments of the present application. For example, different messages are distinguished, rather than used to describe a specific order or sequence. The objects thus described can be interchanged under appropriate circumstances, so as to be able to describe schemes other than the embodiments of the present application.

[0103] (4) In the present application, "when", "in the case of", "if" and the like all refer to the case where the device will make corresponding processing under certain objective circumstances, and are not limited to time, and do not require the device to have a judgment action when implemented, nor does it mean that there are other limitations.

[0104] (5) In the present application, "indicate" or "for indicating" can include direct indication and indirect indication. When describing that certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and it does not mean that A must be carried in the indication information.

[0105] The indication manner involved in the embodiments of the present application should be understood as covering various methods that can enable the to-be-indicated party to know the to-be-indicated information. The to-be-indicated information can be sent as a whole, or can be sent separately in multiple sub-information, and the sending period and / or sending opportunity of these sub-information can be the same or different, and the present application does not limit the sending method.

[0106] The "indication information" in the embodiments of the present application can be explicit indication, that is, directly indicated through signaling, or obtained according to the parameters indicated by the signaling, combined with other rules or combined with other parameters or through derivation. It can also be implicit indication, that is, obtained according to rules or relationships, or according to other parameters, or through derivation. The present application does not make specific limitations on this.

[0107] (6) In this application, "protocol" may refer to a standard protocol in the field of communications, such as fifth-generation (5G) protocols. th This application does not limit the scope of protocols such as generation (5G), new radio (NR), and related protocols applied in future communication systems. "Predefined" may include predefined terms, such as protocol definitions. "Preconfiguration" can be achieved by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device; this application does not limit the implementation method.

[0108] (7) In this application, "communication" can also be described as "communication", "information transmission", "data processing", etc. "Transmission" includes "sending" and "receiving". "Transmission" can be described as "output". In this application, "message", "information", "signal" or "information element (IE)" can be used interchangeably. There are no restrictions on the name of the message or information, as long as it can achieve the corresponding function.

[0109] "Sending information to XX (device)" can be understood as the destination of the information being that device. This can include sending information directly or indirectly to that device. "Receiving information from XX (device), or receiving information from XX (device)" can be understood as the source of the information being that device. This can include receiving information directly or indirectly from that device. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be understood in a similar way, and will not be repeated here. Furthermore, "sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, "sending" or "receiving" can occur between devices, for example, between network devices and terminal devices via an air interface. "Sending" or "receiving" can also occur within a device, for example, between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0110] (8) In the present application, the words such as "exemplarily", "for example" and the like are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the word "example" is used to present the concept in a specific way. In the embodiments of the present application, "of", "corresponding", "corresponding" and "associated" are sometimes used interchangeably, and it should be pointed out that when their differences are not emphasized, the meanings they express are consistent.

[0111] (9) In the present application, when a comparison is made between A and B, the description "when A is greater than or equal to B, execution mode A is performed, and when A is less than or equal to B, execution mode B is performed" can be implemented as "when A is greater than or equal to B, execution mode A is performed; or when A is less than B, execution mode B is performed", or as "when A is greater than B, execution mode A is performed; or when A is less than or equal to B, execution mode B is performed", which is not limited in the present application. For ease of description, the implementation in the present application is described by taking "when A is greater than or equal to B, execution mode A is performed; or when A is less than B, execution mode B is performed" as an example.

[0112] (10) In the present application, the configuration can be signaling configuration, which can also be described as configuration signaling. For example, the signaling configuration includes configuration by signaling sent by the base station, which can be radio resource control (RRC) message, downlink control information (DCI), or system information block (SIB). Alternatively, the signaling configuration can also be configured to the terminal device by preconfigured signaling, or configured to the terminal device by preconfiguration. Here, preconfiguration is to define or configure the value of the corresponding parameter in advance in the protocol, and store it in the terminal device when communicating with the terminal device. The preconfigured message can be modified or updated under the condition that the terminal device is connected to the network.

[0113] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0114] The technical solutions provided in the present application can be applied to various communication systems, such as a 5G or NR system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like, and a future communication system. The technical solutions provided in the present application can also be applied to a device to device (D2D) communication system, a vehicle-to-everything (V2X) communication system, a machine to machine (M2M) communication system, a machine type communication (MTC) system, and an internet of things (IoT) communication system. The technical solutions provided in the present application can also be applied to a low-frequency scenario, a high-frequency scenario, a terahertz, optical communication, a licensed frequency band, and an unlicensed frequency band, and the like.

[0115] FIG. 1 is a schematic diagram of a communication system to which embodiments of the present application are applicable. As shown in FIG. 1, the communication system 10 includes a radio access network (RAN) 100 and a core network (CN) 200. The RAN 100 includes at least one RAN node (e.g., 110a and 110b in FIG. 1, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in FIG. 1, collectively referred to as 120). The RAN 100 can further include other RAN nodes, such as a wireless relay device and / or a wireless backhaul device (not shown in FIG. 1), and the like. The terminal 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices, respectively, or can be the same physical device integrated with the logical functions of the core network and the radio access network.

[0116] The RAN 100 can be a third generation partnership project (3GPP) RAN, such as a 5G NR network, a long term evolution (LTE) network, an LTE frequency division duplex (FDD) network, an LTE time division duplex (TDD) network, and the like. rdThe RAN 100 can be a 5G New Radio (NR) or 5G NR system, which is a new radio access technology defined for the 5G system (5G System (5GS)) by the 3rd Generation Partnership Project (3GPP). The RAN 100 can also be a 4G mobile communication system, a 5G mobile communication system, or a future mobile communication system. The RAN 100 can also be an open radio access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 can also be a communication system in which two or more of the above systems are fused.

[0117] The RAN node 110, which can also be referred to as an access network device, a RAN entity, or an access node, etc., forms part of the communication system, and is configured to facilitate wireless access by terminals. The RAN nodes 110 in the communication system 100 can be of the same type or of different types. In some scenarios, the roles of the RAN node 110 and the terminal 120 are relative, e.g., the network element 120i in Figure 1 can be a helicopter or a drone, which can be configured to be a mobile base station, and for a terminal 120j accessing the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal. The RAN nodes 110 and the terminals 120 are sometimes referred to as communication apparatuses, e.g., the network elements 110a and 110b in Figure 1 can be understood as communication apparatuses with base station functionalities, and the network elements 120a-120j can be understood as communication apparatuses with terminal functionalities.

[0118] In a possible scenario, the RAN node can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a base station in a future mobile communication system, or an access node in a WiFi system, etc. The RAN node can be a macro base station (e.g., 110a in Figure 1), a micro base station or an indoor station (e.g., 110b in Figure 1), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in the V2X technology can be a road side unit (RSU).

[0119] In another possible scenario, multiple RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of functions of a base station. For example, a RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CU-CP), a CU-user plane (CU-UP), a radio unit (RU), or a CU-radio unit (CU-RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0120] In different systems, the CU (including an open CU-CP (O-CU-CP) and an open CU-UP (O-CU-UP), a DU, or an RU) can also have different names, but a person skilled in the art can understand its meaning. For example, in an ORAN system, the CU can also be referred to as an open central unit (O-CU), the DU can also be referred to as an open distributed unit (O-DU), the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, the CU-CP, the CU-UP, the DU, and the RU are taken as examples for description in this application. Any one of the CU (or the CU-CP, the CU-UP), the DU, and the RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0121] The terminal 120 can be a device or module with corresponding communication functions for accessing the above-mentioned communication system. The terminal can also be referred to as user equipment (UE), terminal, user device, access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal unit, terminal station, terminal device, wireless communication device, user agent, or user apparatus. The terminal is usually provided with a communication module, circuit or chip for performing corresponding communication functions. The terminal is also configured with program instructions for performing corresponding communication functions.

[0122] For example, the terminal in the embodiments of the present application can be a mobile phone, a personal digital assistant (PDA) computer, a laptop computer, a tablet computer (Pad), a drone, a computer with wireless transceiver function, an MTC terminal, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an Internet of Things (IoT) terminal, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home (such as game consoles, smart televisions, smart speakers, smart refrigerators and fitness equipment, etc.), a wireless terminal with wireless communication function in transportation vehicles, a communication module, an RSU with terminal function.

[0123] The RAN 100 and the terminal 120 can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on aircraft, balloons and satellites in the air. The scene where the RAN 100 and the terminal 120 are located is not limited in the embodiments of the present application.

[0124] The CN 200 can be a 5G core network, an evolved 5G core network, or a future core network. Taking the 5G core network as an example, the CN 200 includes an access and mobility management function (AMF) network element responsible for services such as mobility management and access management, a session management function (SMF) network element responsible for session management, a user plane function (UPF) network element responsible for user plane packet routing and forwarding and quality of service (QoS) control, a policy control function (PCF) network element, and the like. The above core network elements can work independently or can be combined together to implement certain control functions, for example, the AMF, the SMF, and the PCF can be combined together as a core network device.

[0125] The technical solutions provided in the present application can also be applied to a non-terrestrial communication network (NTN) system, such as an inter-satellite communication system, a satellite communication system, a high altitude platform station (HAPS) communication, an integrated communication and navigation (ICaN) system, or a global navigation satellite system (GNSS), etc.

[0126] FIG. 2 is a schematic diagram of another communication system suitable for the embodiments provided in the present application. As shown in FIG. 2, the satellite communication system includes a satellite base station, a terminal device, a gateway (GW), a core network, a new radio, an Xn interface, and an NG interface, etc. For example, the satellite base station 1 can provide communication services for the terminal device through the new radio, or communicate with the satellite base station 2 through the Xn interface, or communicate with the ground base station through the NG interface. The ground base station can communicate with the core network. Optionally, the satellite base station 1 or the satellite base station 2 can be a CU or a DU or a RU, or an O-RAN node carried on a satellite.

[0127] FIG. 3 is a schematic diagram of another communication system according to embodiments of the present application. As shown in FIG. 3, the inter-satellite communication system includes satellite 1 and satellite 2, and satellite 1 and satellite 2 can exchange information through a channel. Satellite 1 and satellite 2 each include a communication module, a transceiver antenna, an APT module, and an APT transmitting / receiving antenna. The communication module is responsible for information transmission between satellite 1 and satellite 2, and is the main body of the inter-satellite communication system. The APT module is responsible for acquisition, alignment, and tracking between satellite 1 and satellite 2, determines the direction of arrival of the incident signal as acquisition, adjusts the transmission wave aiming at the receiving direction as alignment, and constantly adjusts the alignment and acquisition as tracking in the entire communication process. Optionally, the satellite can be a drone, a hot air balloon, a low-orbit satellite, a medium-orbit satellite, or a high-orbit satellite, etc.

[0128] In the above communication system, one device can send a signal to another device or receive a signal from another device. The signal can include a reference signal, information, signaling, or data, etc. In this application, the device can be replaced by an entity, a network entity, a communication device, a communication module, a node, a communication node, etc.

[0129] It should be understood that the above naming is only defined for the purpose of distinguishing different functions, and should not constitute any limitation on the present application. The present application does not exclude the possibility of using other names in 5G networks and future other networks. For example, in future communication networks, part or all of the above network elements can use the terms in 5G, or other names, etc.

[0130] The communication systems shown in FIGS. 1-3 and the business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute any limitation on the technical solutions provided by the embodiments of the present application. It is known to those skilled in the art that, with the evolution of network architecture and the appearance of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0131] In order to facilitate understanding of the embodiments of the present application, the terms involved in the present application are briefly explained as follows.

[0132] 1. Perception;

[0133] Perception is a process of collecting, processing collected data, and generating perception results. For example, the distance, shape, and type of surrounding obstacles are determined by collecting data, and for another example, the breathing rate and heartbeat of a detected object are determined by collecting data. The collected data can be data collected by a sensor or data collected by a wireless signal.

[0134] 2. Perception scenario;

[0135] The perception scene can include a network device-based perception scene, a network device and terminal device-based perception scene, and a terminal device-based perception scene.

[0136] FIG. 4 is a schematic diagram of a perception scene according to an embodiment of the present application.

[0137] As shown in (1) of FIG. 4, the network device-based perception scene (or base station self-transmission and self-reception) is that the network device serves as a transmit (Tx) end and a receive (Rx) end of the perception signal. For example, the perception signal 1 transmitted by the network device reaches a perception target or target object (for example, a vehicle), the perception signal 1 is scattered by the target object, the network device can receive the perception signal 2, and then the network device can perform perception processing on the perception signal 2 to obtain a perception result. That is, the network device knows what it has transmitted, for example, the perception data transmitted by the network device can also serve as the perception signal.

[0138] As shown in (2) of FIG. 4, the network device-based perception scene (or base station A transmission and base station B reception) is that one network device serves as a Tx end and another network device serves as an Rx end of the perception signal. For example, the perception signal 1 transmitted by the network device A reaches a perception target or target object (for example, a vehicle), the perception signal 1 is scattered by the target object, the network device B can receive the perception signal 2, and then the network device B can perform perception processing on the perception signal 2 to obtain a perception result.

[0139] As shown in (3) of FIG. 4, the network device and terminal device-based perception scene (or base station transmission and terminal reception) is that the network device serves as a Tx end and the terminal device serves as an Rx end of the perception signal. For example, the perception signal 1 transmitted by the network device reaches a perception target or target object (for example, a vehicle), the perception signal 1 is scattered by the target object, the terminal device can receive the perception signal 2, and then the terminal device can perform perception processing on the perception signal 2 to obtain a perception result.

[0140] As shown in (4) of FIG. 4, the network device and terminal device-based perception scene (or terminal transmission and base station reception) is that the terminal device serves as a Tx end and the network device serves as an Rx end of the perception signal. For example, the perception signal 1 transmitted by the terminal device reaches a perception target or target object (for example, a vehicle), the perception signal 1 is scattered by the target object, the network device can receive the perception signal 2, and then the network device can perform perception processing on the perception signal 2 to obtain a perception result.

[0141] As shown in (5) of FIG. 4, the sensing scenario based on the terminal device (or in other words, the terminal device is self-transmitting and self-receiving) is that the terminal device acts as a transmitting end and a receiving end of the sensing signal. For example, the sensing signal 1 transmitted by the terminal device reaches a sensing target or target object (for example, a vehicle), the sensing signal 1 is scattered by the target object, the terminal device can receive the sensing signal 2, and then the terminal device can perform sensing processing on the sensing signal 2 to obtain a sensing result. That is, the terminal device knows what it has transmitted, for example, the sensing data transmitted by the terminal device can also be used as the sensing signal.

[0142] As shown in (6) of FIG. 4, the sensing scenario based on the terminal device (or in other words, terminal A transmits and terminal B receives) is that one terminal device acts as a transmitting end of the sensing signal and another terminal device acts as a receiving end of the sensing signal. For example, the sensing signal 1 transmitted by the terminal device a reaches a sensing target or target object (for example, a vehicle), the sensing signal 1 is scattered by the target object, the terminal device b can receive the sensing signal 2, and then the terminal device b can perform sensing processing on the sensing signal 2 to obtain a sensing result.

[0143] In the above scenarios, the sensing signal 2 can be understood as a scattered signal of the sensing signal 1, and the sensing signal 2 carries more information than the sensing signal 1, for example, the sensing signal 2 can carry source information and environmental information. Alternatively, the number of sensing signals transmitted by the transmitting end is not limited in the present application.

[0144] 3. Integrated communication and sensing (ISAC);

[0145] The integrated communication and sensing can be simply referred to as integrated sensing and communication, and can also be referred to as joint communication and sensing (JCAS). ISAC refers to the fusion of the functions of communication and sensing, so that the future communication system has both communication and sensing functions. While transmitting information in a wireless channel, the characteristics of the channel are actively recognized and analyzed, so as to sense the physical characteristics of the surrounding environment, thereby enhancing the functions of communication and sensing. Compared with a system in which sensing and communication are separated, ISAC has a series of advantages, such as saving cost, reducing device size, reducing power consumption, improving frequency efficiency, reducing mutual interference between communication and sensing, and the like.

[0146] FIG. 5 shows a scenario diagram of integrated communication and sensing. As shown in FIG. 5, the base station can perceive that there are obstacles (such as buildings, trees, and the like shown in FIG. 5) in some directions around the base station by transmitting a signal. During the communication process between the base station and the user (such as user 1, user 2, …, or user K shown in FIG. 5), the above obstacles can be avoided, and the communication performance between the base station and the user can be improved.

[0147] 4. Antenna port;

[0148] An antenna port is a logical concept, one antenna port can correspond to one physical transmit antenna, or can correspond to multiple physical transmit antennas. In these two cases, the receiver of the terminal will not decompose the signal from the same antenna port. Because from the perspective of the terminal, whether the channel is formed by a single physical transmit antenna, or is combined by multiple physical transmit antennas, the reference signal (RS) corresponding to this antenna port defines this antenna port, for example, the antenna port corresponding to the DMRS is the DMRS port, and the terminal can obtain the channel estimation of the corresponding antenna port according to the reference signal. Each antenna port corresponds to a time / frequency resource grid, and has its own reference signal. An antenna port is a channel, and the terminal performs channel estimation and data demodulation according to the reference signal corresponding to the antenna port.

[0149] An antenna port is usually associated with a reference signal, and its meaning can be understood as a transceiving interface on the channel experienced by the reference signal. For a low-frequency system, one antenna port can correspond to one or more antenna elements, and these elements jointly transmit the reference signal, and the receiving end can regard them as a whole and does not need to distinguish these elements. For a high-frequency system, an antenna port can correspond to a beam, and similarly, the receiving end only needs to regard this beam as an interface and does not need to distinguish each element.

[0150] In the embodiments of the present application, the antenna port can also be referred to as a port, and the set corresponding to multiple antenna ports can be referred to as a port group. For example, multiple digital ports of a base station are grouped to form multiple port groups. For another example, a port group can be multiple digital ports corresponding to a same analog beam, which is referred to as a port group or a digital-analog port group; or, a port group can be a digital port set corresponding to multiple analog beams, which is referred to as a port group or a digital-analog port group. Or, multiple digital ports of a same analog beam are divided into multiple subsets, and each subset is referred to as a port group or a digital-analog port group.

[0151] 5, Pilot: also referred to as a reference signal, the pilot involved in the present application includes but is not limited to the following reference signals:

[0152] A demodulation reference signal (DMRS), a channel state information-reference signal (CSI-RS), a tracking reference signal (TRS), a sounding reference signal (SRS), a phase tracking reference signal (PT-RS), a positioning reference signal (PRS), a sensing reference signal (SeRS), and the like. The pilot in this application can also be a reference signal that can be carried in an orthogonal frequency division multiplexing (OFDM) symbol in addition to the above-mentioned reference signals, which will not be described here.

[0153] 6. Time division, frequency division, code division;

[0154] Time division refers to that RSs corresponding to different antenna ports occupy different time domain resources (such as different OFDM symbols).

[0155] Frequency division refers to that RSs corresponding to different antenna ports occupy different frequency domain resources (such as different subcarriers).

[0156] Code division refers to that RSs corresponding to different antenna ports occupy the same time-frequency resource, and are distinguished by different code domain resources. For example, 2 antenna ports occupy the same 2 REs, and the 2 antenna ports apply orthogonal codes [1, 1] and [1, -1] on the 2 REs for distinction. The time-frequency resources corresponding to the different antenna ports of code division form a code division multiplexing (CDM) block, which can also be referred to as a CDM group.

[0157] The above description of the terms is only for the convenience of understanding and does not limit the protection scope of the embodiments of the application.

[0158] In a communication system, higher frequency bands (millimeter waves or even terahertz), wider bandwidths, and larger-scale antenna arrays make high-precision, high-resolution sensing possible, thereby realizing integrated sensing and communication (ISAC) and making communication and sensing functions complementary. The demand for communication is simply to send information from the sending end to the receiving end. The demand for sensing is simply to sense the surrounding environment, the moving speed of an object, or the distance, and the most traditional sensing is traditional radar.

[0159] FIG. 6 shows a distribution diagram of a sensing reference signal (may be referred to as a sensing signal). As shown in FIG. 6, the horizontal axis represents the time domain (for example, OFDM symbol), the vertical axis represents the frequency domain (for example, subcarrier), the shaded square is used for communication and sensing, which can be referred to as a sensing signal, and the blank square is used for communication, which can be referred to as a data signal. As shown in FIG. 6(a), for the same OFDM symbol, two adjacent sensing signals are spaced by 2 subcarriers, that is, the sensing signals are uniformly spaced; as shown in FIG. 6(b), for the same OFDM symbol, two adjacent sensing signals can be spaced by 2 or 4 subcarriers, that is, the sensing signals are non-uniformly spaced; as shown in FIG. 6(c), for the same OFDM symbol, two adjacent sensing signals can contain 1 or 4 subcarriers, that is, the sensing signals are variably spaced.

[0160] The requirements of communication and radar are often contradictory, because communication often pursues higher transmission efficiency, that is, can be understood as extreme spectrum efficiency, and radar pursues high-precision detection of targets, and often does not consider the impact of spectrum efficiency. The current frame structure usually considers the configuration scheme of the sensing signal corresponding to a single port, and does not involve the configuration of the sensing signal corresponding to multiple ports.

[0161] Therefore, the present application provides a communication method and device to improve the communication performance and sensing performance.

[0162] The communication method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments of the present application can be applied to the scenarios of communication between the sending end and the receiving end, for example, the embodiments of the present application can be applied to uplink, downlink or sidelink communication scenarios.

[0163] It should also be understood that the embodiments shown below do not particularly limit the specific structure of the subject performing the method provided by the embodiments of the present application, as long as the subject can communicate according to the method provided by the embodiments of the present application by running the code or program recording the method provided by the embodiments of the present application. For example, the method provided by the embodiments of the present application can be performed by a first device and a second device. In the case of no special description, the device in the present application, for example, the first device and the second device, can refer to the device itself (for example, a terminal device or a network device), a component in the device (for example, a communication module, a processor, a circuit, a chip (such as a modem chip, also known as a baseband chip, or a SoC chip or a SIP chip containing a modem core), or a chip system, etc.), or a logic module or software capable of realizing all or part of the functions of the device.

[0164] FIG. 7 is a flow diagram of a communication method according to an embodiment of the present application. As shown in FIG. 7, the method 700 includes the following steps. For ease of description, the following describes a dual-base sensing scenario, for example, a terminal device transmits a sensing signal and a network device receives a backhaul signal, which can be understood with reference to the scenario shown in (4) of FIG. 4. It can be understood that the technical solutions of the present application are also applicable to other scenarios of FIG. 4, and the implementation manners are similar. For brevity, details are not described herein.

[0165] S710, the first device (for example, a terminal device) acquires first configuration information.

[0166] The first configuration information is used to indicate M CDM groups, each of the M CDM groups includes a plurality of ports, the plurality of ports in each CDM group occupy the same frequency domain resource, and M is an integer greater than or equal to 1. That is, the terminal device can determine at least one CDM group by acquiring the first configuration information, each CDM group includes at least two ports, and optionally, the at least two ports correspond to the same time domain resource and frequency domain resource, realizing code division.

[0167] Exemplarily, the frequency domain resource can include one or more frequency domain units. The frequency domain unit can be a resource element (RE), a subcarrier, a resource block (RB), a subchannel, a resource pool, a bandwidth (BW), a bandwidth part (BWP), a component carrier (CC), a channel, or an interlace RB, etc. Similarly, the time domain resource can include one or more time domain units (also referred to as time units). The time domain unit can be a radio frame (RF), a subframe, a frame, a half subframe, or a half frame, a slot, a mini-slot, a partial slot, or an OFDM symbol, such as 6, 7, 12, or 14 OFDM symbols, etc. For ease of description, the following embodiments take the frequency domain resource as a subcarrier and the time domain resource as an OFDM symbol as an example for description.

[0168] In an implementation, the first configuration information can be configured by the network device. For example, the network device generates the first configuration information and sends the first configuration information to the terminal device, and accordingly, the terminal device receives the first configuration information from the network device. As an example, the network device corresponding CU-CP generates the first configuration information and sends it to the terminal device through the DU and the RU; or the network device corresponding DU generates the first configuration information and sends it to the terminal device through the RU. As another example, in the O-RAN system, the network device corresponding O-CU-CP generates the first configuration information and sends it to the terminal device through the O-DU and the O-RU; or the network device corresponding O-DU generates the first configuration information and sends it to the terminal device through the O-RU.

[0169] In another implementation, the first configuration information can be predefined or preconfigured. Wherein, the predefinition can include predefinition, such as protocol definition, and the preconfiguration can be implemented by pre-saving the corresponding code, table, function, text, string or other means that can be used to indicate relevant information (for example, the first configuration information) in the network device and / or terminal device, and the specific implementation of the present application is not limited.

[0170] Optionally, the plurality of ports in each CDM group are orthogonal through OCC, that is, the plurality of ports in the same CDM group are orthogonal in the form of OCC. For example, a CDM group includes 2 ports, which occupy the same 2 subcarriers, such as subcarrier 0, then the 2 ports can apply orthogonal codes [1, 1] and [1, -1] to distinguish them on the 2 subcarriers to realize code division.

[0171] S720, the second device (for example, the network device) acquires the first configuration information.

[0172] Wherein, the specific implementation of the second device acquiring the first configuration information can be predefined or preconfigured, and the specific implementation can be referred to the description of the above step S710, and for brevity, it will not be repeated here.

[0173] Optionally, the second device can generate the first configuration information and send it to the first device through RRC signaling. For example, the second device generates or determines the first configuration information according to the current resource scheduling situation, the transmission demand of the terminal device, or the priori information, and then sends it to the first device.

[0174] S730, the first device sends L sensing signals according to the first configuration information.

[0175] Accordingly, the second device receives L sensing signals according to the first configuration information.

[0176] Optionally, the sensing signal can be replaced by a sensing reference signal, and the like. The sensing signal can be a signal used for sensing measurement.

[0177] Optionally, the sensing signal includes sensing data and / or a sensing reference signal. That is, the first device and the second device can only communicate, i.e., the first device sends the DMRS and the data to the second device; or, the first device and the second device can only sense, i.e., the first device sends the sensing reference signal to the second device; or, the first device and the second device can simultaneously communicate and sense, i.e., the first device sends the DMRS, the sensing reference signal and the data to the second device.

[0178] For the self-initiated self-reception scenario, such as (1) of FIG. 4 or (5) of FIG. 4, the first device and the second device mainly perform a pure communication or pure sensing process. For the self-initiated other-reception scenario, such as (2) of FIG. 4, (3) of FIG. 4, (4) of FIG. 4, or (6) of FIG. 4, the first device and the second device mainly perform a communication and sensing process.

[0179] Optionally, the sensing data can be obtained by QPSK or QAM modulation, and the sensing reference signal can be obtained by QPSK modulation. QPSK is a four-phase phase modulation, such as "+45°, -45°, +135°, -135°" on the phase, which uses four phases on the orthogonal axis to represent the digital signal. QAM is a quadrature amplitude modulation, which combines phase and amplitude modulation, and has higher frequency band utilization. The modulation mode of the sensing signal is not limited in the present application.

[0180] Optionally, the demodulation reference signal DMRS and the sensing signal correspond to the same port. That is, the port used for transmitting the DMRS is the same as the port used for transmitting the sensing signal, or in other words, the same port can be used for transmitting the DMRS and the sensing signal.

[0181] FIG. 8 is a multi-port structure diagram of coexistence of DMRS ports and sensing signal ports provided by an embodiment of the present application. The horizontal axis represents the time domain (such as OFDM symbol), and the vertical axis represents the frequency domain (such as subcarrier). As shown in FIG. 8, the DMRS port 1 and the DMRS port 2 are uniformly distributed on 9 subcarriers in symbol 0, and the sensing signal port 1 and the sensing signal port 2 are uniformly distributed on 9 subcarriers in symbol 3 and symbol 7. The sensing signal port 1 belongs to OCC group 1, the sensing signal port 2 belongs to OCC group 2, the DMRS port can be understood as a port corresponding to the DMRS, i.e., the DMRS is transmitted through the corresponding port, and the sensing signal port can be understood as a port corresponding to the sensing signal, i.e., the sensing signal is transmitted through the corresponding port.

[0182] In the present application, DMRS port and sensing signal port can be understood as corresponding to the same port without special emphasis, and the two can be distinguished by the name of the transmitted reference signal, whether it is a DMRS or a sensing signal.

[0183] FIG. 9 is a schematic diagram of the distribution of DMRS and sensing data on time-frequency resources according to an embodiment of the present application. As shown in FIG. 9, the horizontal axis represents the time domain (for example, 8 OFDM symbols), and the vertical axis represents the frequency domain (for example, one RB 0, including 12 subcarriers). Generally, the DMRS is located at the starting position of the time domain resource, and other positions of the time domain resource are used to transmit sensing data. Specifically, taking 4 ports as an example, FIG. 9 includes DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. Among them, DMRS port 0 and DMRS port 1 belong to one CDM group and occupy the same subcarriers, such as subcarriers 1, 3, 5, …, 9, and 11. DMRS port 2 and DMRS port 3 belong to one CDM group and occupy the same subcarriers, such as subcarriers 0, 2, 4, …, 8, and 10. In addition, the shaded square on symbol 0 corresponds to the time-frequency resource used to transmit the DMRS, and the blank squares on symbols 1 to 7 correspond to the time-frequency resources used to transmit the sensing data. In this implementation, the sensing orthogonality of multiple ports is realized by using a DMRS OCC group, thereby improving the sensing performance.

[0184] In the present application, L sensing signals correspond to multiple ports in at least one of the M CDM groups, L is a positive integer less than or equal to M, and it can be understood that: L sensing signals correspond to one CDM group, that is, L sensing signals are transmitted through the time-frequency resources corresponding to multiple ports in one CDM group; or L sensing signals correspond to multiple CDM groups, that is, L sensing signals are transmitted through the time-frequency resources corresponding to multiple ports in multiple CDM groups.

[0185] As an example, as shown in FIG. 9, for the sensing reference signal, L sensing signals can be transmitted through DMRS port 0 and DMRS port 1, and / or transmitted through DMRS port 2 and DMRS port 3, that is, the L sensing signals can occupy the time-frequency resources in the shaded squares in the figure, for example, each sensing signal corresponds to a shaded square. For the sensing data, L sensing signals are transmitted through DMRS port 0 and DMRS port 1, and / or transmitted through DMRS port 2 and DMRS port 3, that is, the L sensing data can occupy the time-frequency resources in the non-shaded squares in the figure, and each sensing data corresponds to a non-shaded square. Alternatively, the L sensing signals can be regarded as one or more streams of sensing data, and each stream of sensing data corresponds to one CDM group, that is, each stream of sensing data corresponds to multiple ports in one CDM group, that is, each stream of sensing data can be transmitted through the time-frequency resources corresponding to the multiple ports in one CDM group. In this implementation, the sensing signals are transmitted in the granularity of the CDM group, which can simplify the configuration of the sensing signals corresponding to multiple ports, and realize port orthogonality in a time division manner, a frequency division manner, or a code division manner, so that more sensing signals can be multiplexed on the time-frequency resources, and the sensing performance can be improved.

[0186] For example, taking the transmission of one stream of sensing data in one CDM group as an example, at least one CDM group includes a first CDM group, and the L sensing signals include a first sensing signal, and the first sensing signal corresponds to the first CDM group, wherein the first CDM group includes a first port and a second port, and the first port and the second port correspond to a first subcarrier, and the first device transmits the L sensing signals according to the first configuration information, including: the first device transmits the first sensing signal on the first subcarrier through the first port and the second port. Correspondingly, the second device receives the first sensing signal on the first subcarrier through the first port and the second port, and the first sensing signal includes one stream of sensing data, that is, one stream of sensing data is carried on the same subcarrier corresponding to different ports included in one CDM group.

[0187] FIG. 10 is a schematic diagram of the configuration of the sensing signals under multiple ports provided by an embodiment of the present application. As shown in FIG. 10, CDM group 1 includes DMRS port 0 and DMRS port 1, and CDM group 2 includes DMRS port 2 and DMRS port 3. For details, reference can be made to the related description of FIG. 9. It can be understood that one CDM group corresponds to one stream of sensing data, for example, CDM group 1 corresponds to sensing data stream 1, and CDM group 2 corresponds to sensing data stream 2.

[0188] Further, for one DMRS CDM group, e.g. CDM group 1, the corresponding sensing data stream 1 can be allocated orthogonally in the form of OCC, thereby forming a new sensing signal group 1, in which the sensing signal port 0 and the sensing signal port 1 are orthogonal by OCC code. For another example, for CDM group 2, the corresponding sensing data stream 2 can be allocated orthogonally in the form of OCC, thereby forming a new sensing signal group 2, in which the sensing signal port 2 and the sensing signal port 3 are orthogonal by OCC code. That is, in one sensing signal group, the sensing data representing the transmission of one stream is the communication data symbol transmitted by the first device. In other words, the sensing data stream 1 corresponds to the sensing signal group 1, and the sensing data stream 2 corresponds to the sensing signal group 2. In the absence of special emphasis, the sensing signal group and the CDM group are the same, the sensing signal port 0 and the DMRS port 0 are the same, the sensing signal port 1 and the DMRS port 1 are the same, the sensing signal port 2 and the DMRS port 2 are the same, and the sensing signal port 3 and the DMRS port 3 are the same. The present application only uses the name to represent that the reference signal transmitted is a DMRS or a sensing signal. It can be understood that the number of sensing data streams in the present application is less than or equal to the number of CDM groups of the DMRS.

[0189] FIG. 11 is a schematic diagram of another configuration of sensing signals in a multi-port according to an embodiment of the present application. As shown in FIG. 11, it can be regarded as a simplified schematic diagram of FIG. 10. One stream of sensing data is allocated to a plurality of ports included in one sensing signal group by using orthogonal basis functions in the form of OCC. For example, the sensing data stream 1 is expanded to the sensing signal port 0 and the sensing signal port 1 included in the sensing signal group 1 in the form of OCC, and the sensing data stream 2 is expanded to the sensing signal port 2 and the sensing signal port 3 included in the sensing signal group 2 in the form of OCC. The orthogonal basis functions refer to the orthogonality (i.e. the inner product is 0) between a plurality of basis functions, which can be regarded as a perpendicular coordinate system (for example, a plane formed by two perpendicular straight lines on a plane).

[0190] Based on the M CDM groups indicated by the first configuration information in the above step S710, the first device and the second device can transmit sensing signals on the time-frequency resources corresponding to the M CDM groups. Optionally, for the M CDM groups, there can be one or more CDM groups that are not used. The processing scheme for the time-frequency resources corresponding to the unused CDM groups will be described below with reference to FIG. 12.

[0191] In an implementation, the at least one CDM group is composed of M1 CDM groups, and the method further comprises: when M1 is less than M, repeating transmission of one or more of the L perception signals on the subcarriers corresponding to the first port, transmitting other signals on the subcarriers corresponding to the first port, or, power boosting the L perception signals; wherein the first port is at least one port in the M-M1 CDM groups other than the M1 CDM groups, and M1 is a positive integer.

[0192] That is, for the M CDM groups configured by the first configuration information, the first device and the second device use M1 CDM groups (for example, M1

[0193] Optionally, the power boosting of the L perception signals comprises: the first device performing power boosting on the L perception signals according to second indication information; wherein the second indication information is associated with at least one of the subcarriers corresponding to the at least one port in the M-M1 CDM groups, the subcarriers corresponding to the at least one port in the M1 CDM groups, or the M CDM groups.

[0194] That is, according to at least one of the number of occupied subcarriers, the number of unused subcarriers, and the form of CDM groups, power boosting of the L perception signals can be implemented, including whether to perform power boosting on the subcarriers where the perception signals are located, and the power boosting value. For example, assuming that there are 4 subcarriers, 3 of which are used to transmit perception signals, and the other subcarrier (empty subcarrier) is not used, the first device can allocate the power of the empty subcarrier to the other 3 used subcarriers, and perform 1 / 3 power amplification (or boosting).

[0195] Optionally, before the first device processes the M-M1 CDM groups, the network device can further indicate whether to schedule data on the null subcarriers, and / or, schedule what data. The method further includes: the first device receiving first indication information from the second device, wherein the first indication information is used to indicate that the subcarriers corresponding to the first port are used for repeating transmission of one or more of the L perception signals, or the first indication information is used to indicate that the L perception signals are power boosted, and implicitly indicates that the subcarriers corresponding to the first port are not used (or null subcarriers); or the first indication information is used to indicate transmission of other signals. The number and / or type of the other signals are not limited in the present application.

[0196] Optionally, the first indication information can be DCI signaling or RRC signaling, and can be carried on PDSCH or PDCCH.

[0197] FIG. 12 is a schematic diagram of a processing scheme of unused ports provided by an embodiment of the present application. As shown in FIG. 12, the horizontal axis represents the time domain (for example, 4 OFDM symbols), and the vertical axis represents the frequency domain (for example, one RB 0 including 12 subcarriers). Taking 4 ports as an example, FIG. 12 includes DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. Among them, DMRS port 0 and DMRS port 1 belong to CDM group 1 and occupy the same subcarriers, such as subcarriers 1, 3, 5, …, 9, and 11. DMRS port 2 and DMRS port 3 belong to CDM group 2 and occupy the same subcarriers, such as subcarriers 0, 2, 4, …, 8, and 10. In addition, the shaded square on symbol 0 corresponds to the time-frequency resource used for transmitting DMRS, and the subcarriers corresponding to CDM group 1 on symbol 3 are used for transmitting perception signal #1.

[0198] As shown in (a) of FIG. 12, for the null subcarriers, such as one or more of the subcarriers corresponding to CDM group 2 on symbol 3, they can be used for repeating transmission of perception signal #1, so as to improve the robustness and stability of the perception signal.

[0199] As shown in (b) of FIG. 12, for the null subcarriers, such as one or more of the subcarriers corresponding to CDM group 2 on symbol 3, they can not be used for transmission, and the power on the null subcarriers can be allocated to the subcarriers corresponding to CDM group 1 on symbol 3 for power boosting, which can improve the root-mean-square error (RMSE) performance of the perception, and can also make the perception signals be transmitted at equal intervals in the frequency domain, which is equivalent to repetition, and can reduce the perception complexity.

[0200] As shown in (c) of FIG. 12, for the null subcarriers, such as one or more of the subcarriers corresponding to CDM group 2 on symbol 3, other signal or data symbols can be transmitted, such as represented using horizontal and vertical hatchings, to improve system throughput.

[0201] Table 1 shows an example of power offset values in the case of power boosting of the sensing signal.

[0202] Table 1

[0203] For different numbers of sensing signal groups and different sensing signal configuration types, the power boosting values (or power offset values) of the subcarriers in which the sensing signal is located are shown in Table 1. For example, when the number of sensing signal groups is 1, the power offset values corresponding to sensing signal configuration type 1 and sensing signal configuration type 2 are both 0 dB, i.e., the power remains unchanged; when the number of sensing signal groups is 2, the power offset values corresponding to sensing signal configuration type 1 and sensing signal configuration type 2 are both -3 dB, i.e., the power is reduced by 3 dB; when the number of sensing signal groups is 3, the power offset value corresponding to sensing signal configuration type 2 is -4.77 dB, i.e., the power is reduced by -4.77 dB.

[0204] The above Table 1 is only an example given for ease of understanding, and other schemes and other forms of expression are not excluded.

[0205] For the DMRS configuration scheme, the DMRS configuration type 1 supports maximum 8 ports, for example, for single-symbol, the DMRS configuration type 1 supports 4 ports, for example, port 0 to port 3, wherein port 0 and port 1 belong to CDM group 0, and port 2 and port 3 belong to CDM group 1; for double-symbol, the DMRS configuration type 1 supports 8 ports, for example, port 0 to port 7, wherein port 0, port 1, port 4 and port 5 belong to CDM group 0, and port 2, port 3, port 6 and port 7 belong to CDM group 1. The DMRS configuration type 2 supports maximum 12 ports, for example, for single-symbol, the DMRS configuration type 2 supports 6 ports, for example, port 0 to port 5, wherein port 0 and port 1 belong to CDM group 0, port 2 and port 3 belong to CDM group 1, and port 4 and port 5 belong to CDM group 2; for double-symbol, the DMRS configuration type 2 supports 12 ports, for example, port 0 to port 11, wherein port 0, port 1, port 6 and port 7 belong to CDM group 0, port 2, port 3, port 8 and port 9 belong to CDM group 1, and port 4, port 5, port 10 and port 11 belong to CDM group 2.

[0206] Based on this, for different DMRS port types, the configuration scheme of the sensing port is as follows.

[0207] In an implementation manner, the plurality of ports include the sensing port, and the method further includes: the first device obtaining second configuration information, the second configuration information being used for indicating a correspondence relationship between a number K of the sensing port and M CDM groups, K being an integer greater than or equal to 2.

[0208] For example, the second configuration information can be configured by the network device. For example, the network device generates the second configuration information and sends the second configuration information to the terminal device, and correspondingly, the terminal device receives the second configuration information from the network device. For another example, the second configuration information can be predefined or preconfigured. The specific implementation manner of the second configuration information is not limited in the application.

[0209] As an example, for DMRS configuration type 1 and DMRS configuration type 2, when M equals to 2, and K is less than or equal to 4, the second configuration information is further used to indicate one of the M CDM groups. That is, when there are 2 CDM groups, e.g. CDM group 0 and CDM group 1, and there are, for example, K = 1, 2, 3 or 4 sensing ports, the K sensing ports can belong to CDM group 1 or CDM group 0, i.e. to ensure that the K sensing ports are preferentially configured in the same CDM group, or in other words, preferentially occupy one CDM group.

[0210] As an example, for DMRS configuration type 1 and DMRS configuration type 2, when M equals to 2, and K is greater than 4 and less than or equal to 8, each of the M CDM groups contains or sensing ports, or each of the M CDM groups contains or sensing ports, represents rounding down, represents rounding up. That is, when there are 2 CDM groups, e.g. CDM group 0 and CDM group 1, and there are, for example, K = 5, 6, 7, or 8 sensing ports, the K sensing ports can be evenly configured to CDM group 0 and CDM group 1, and the sensing ports that cannot be evenly distributed can be configured to CDM group 0 or CDM group 1, i.e. to ensure that the number of sensing ports contained in the two CDM groups is equal or maximally equal. For example, for K = 5, 2 sensing ports are included in CDM group 1 and 3 sensing ports are included in CDM group 0, or 3 sensing ports are included in CDM group 1 and 2 sensing ports are included in CDM group 0.

[0211] As an example, for DMRS configuration type 2, when M equals to 3, and K is greater than 8 and less than or equal to 12, each of the M CDM groups contains or sensing ports, or each of the M CDM groups contains or sensing ports, represents rounding down, represents upward rounding. That is, when there are 3 CDM groups, such as CDM group 0, CDM group 1 and CDM group 2, and there are, for example, K = 9, 10, 11, or 12 sensing ports, the K sensing ports can be evenly configured to CDM group 0, CDM group 1 and CDM group 2, and the sensing ports that cannot be evenly distributed can be configured to CDM group 0 or CDM group 1 or CDM group 2, that is, to ensure that the number of sensing ports contained in the three CDM groups is equal or maximally equal. For example, for the case of K = 7, 3 sensing ports are included in CDM group 0, 2 sensing ports are included in CDM group 1, and 2 sensing ports are included in CDM group 2; or, 2 sensing ports are included in CDM group 0, 3 sensing ports are included in CDM group 1, and 2 sensing ports are included in CDM group 2; or, 2 sensing ports are included in CDM group 0, 2 sensing ports are included in CDM group 1, and 3 sensing ports are included in CDM group 2.

[0212] Optionally, for the time-frequency resources not used in the above CDM groups, such as empty subcarriers, repeated transmission, power boosting, or transmission of other signals can be used, and specific implementation manners can be referred to the related description above, and will not be described here for brevity.

[0213] Optionally, the first configuration information or the second configuration information in the embodiments of the present application can be carried in the first signaling or the first resource, the first signaling can be RRC signaling or MAC CE signaling or DCI signaling, and the first resource can be PDSCH or PDCCH.

[0214] Based on the above scheme, the technical scheme of the present application uses the current multiple DMRS port architecture, provides a configuration scheme of multiple port sensing signals, and uses time division, frequency division, or code division to realize multiple port orthogonality, to realize multiplexing of more sensing signals on time-frequency resources, to improve sensing performance and improve spatial gain.

[0215] It should be understood that 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 by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0216] It should also be understood that the present application will present various aspects, embodiments or features around a system that can include multiple devices, components, modules, etc. It should be understood and appreciated that each system can include additional devices, components, modules, etc., and / or can not include all devices, components, modules, etc. discussed in conjunction with the drawings. In addition, combinations of these schemes can also be used.

[0217] It should also be understood that, in some embodiments described above, the devices in the existing network architecture are exemplarily illustrated (for example, the first device or the second device, etc.), and it should be understood that the specific forms of the devices are not limited in the embodiments of the present application. For example, devices having the same functions in the future are also applicable to the embodiments of the present application.

[0218] It can be understood that, in each of the above method embodiments, the methods and operations implemented by the devices (for example, the first device or the second device) can also be implemented by components (for example, chips or circuits) of the devices.

[0219] In the above, the communication method provided by the embodiments of the present application is described in detail in combination with FIG. 1 to FIG. 16. The above communication method is mainly introduced from the perspective of the interaction between the first device and the second device. It can be understood that the first device and the second device contain corresponding hardware structures and / or software modules for executing various functions in order to implement the above functions.

[0220] Those skilled in the art should realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven hardware 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.

[0221] In the following, the communication device provided by the embodiments of the present application is described in detail in combination with FIG. 13 to FIG. 16. The description of the device embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the above method embodiments, and part of the content will not be described again for the sake of brevity.

[0222] The embodiments of the present application can divide the functional modules of the communication device according to the above method examples, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated in one processing module. The above integrated module can be realized in the form of hardware, or in the form of software functional module, or software and hardware combination. The division of the modules in the embodiments of the present application is illustrative, and is only a logical function division, and another division mode can be used in actual implementation. In the following, each functional module is taken as an example for description.

[0223] FIG. 13 is an exemplary block diagram of the communication device provided by the embodiments of the present application. As shown in FIG. 13, the communication device 1000 can include a chip system 1100, a memory 1200, a bus 1300, a power management module 1400, or a transceiver 1500, etc.

[0224] The chip system 1100 can be an integrated circuit chip with signal processing capability. In implementation, each step of the above method can be completed by integrated logic circuit of hardware in the chip system 1100 or instructions in the form of software.

[0225] By way of example, and without limitation, the chip system 1100 can include a circuit or chip responsible for signal processing (such as a modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a SIP chip containing a modem core).

[0226] Optionally, a memory (such as a cache) can also be provided in the chip system 1100 for storing instructions and data. In some embodiments, the memory in the chip system 1100 is a cache memory. The memory can hold instructions or data that have just been used or recycled by the chip system 1100. If the chip system 1100 needs to use the instructions or data again, it can be directly called from the memory. This avoids repeated access and reduces the waiting time of the chip system 1100, thus improving the efficiency of the system.

[0227] In some embodiments, the chip system 1100 can include one or more interfaces. The interfaces can include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0228] The memory 1200 can include a random access memory (RAM) and a read-only memory (ROM). The memory 1200 can store computer-readable computer-executable code including instructions that, when executed, cause the processor to perform various functions described herein.

[0229] Optionally, the code can include instructions for implementing aspects of the present application as discussed herein including instructions for supporting the generation or parsing of a perception signal. The code can be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code can not be directly executable by the processor 1100 but can cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory 1200 can include, among other things, a basic input / output (I / O) system, which can control basic hardware or software operation such as the interaction with peripheral components or devices.

[0230] By way of example, the chip system 1100 performs various functions of the communication apparatus 1000 by running instructions stored in the memory 1200. For example, when the communication apparatus 1000 performs file transmission with other devices (e.g., terminal devices, or network devices, or core network devices), the chip system 1100 of the communication apparatus 1000 can invoke computer executable program code stored in the memory 1200 to implement the data and / or signaling transmission method provided by the embodiments of the present application.

[0231] Optionally, the memory 1200 can be integrated in the above-mentioned chip system 1100, or independent of the chip system 1100.

[0232] The bus 1300 can be a USB, used to support the mutual communication between various parts in the communication apparatus 1000.

[0233] The power management module 1400 is used to receive charging input from a charger. Optionally, the power management module 1400 can charge the communication apparatus 1000 (e.g., a battery module of the communication apparatus 1000) while also powering the communication apparatus 1000. By way of example and not limitation, the power management module 1400 can also power devices other than the communication apparatus 1000.

[0234] The transceiver 1500 can communicate bi-directionally with another device, via one or more antennas, wired or wireless links. For example, the transceiver 1500 can represent a wireless transceiver and can communicate bi-directionally with another wireless transceiver. The transceiver 1500 can also include a modem to modulate the packets and to provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas. In some cases, the transceiver 1500 can include a plurality of modems and antennas, for example, to communicate with multiple devices or to implement MIMO or other spatial multiplexing techniques. The transceiver 1500 can be implemented as part of a transmitter or a receiver as described herein, for example.

[0235] In some cases, the wireless device can include a single antenna. However, in some cases the device can have more than one antenna, like antenna 1 and antenna 2 as shown in FIG. 13, which can be capable of concurrently transmitting or receiving multiple wireless transmissions. Illustratively, antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the communication apparatus 1000 can be used to cover a single or multiple communication frequency bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: antenna 1 can be multiplexed as a diversity antenna for a wireless local area network. In some other embodiments, the antennas can be used in combination with a tuning switch. The communication apparatus 1000 can transmit files to other devices through the wireless communication function.

[0236] In one design, the communication apparatus 1000 can correspond to the first device in the method embodiments above.

[0237] The apparatus 1000 can implement the steps or procedures performed by the first device in the method embodiments above, where the transceiver 1500 can be used to perform the transceiving related operations of the first device in the method embodiments above; and the chip system 1100 can be used to perform the processing related operations of the first device in the method embodiments above.

[0238] In another design, the communication apparatus 1000 can correspond to the second device in the method embodiments above.

[0239] The apparatus 1000 can implement the steps or procedures performed by the second device in the method embodiments above, where the transceiver 1500 can be used to perform the transceiving related operations of the second device in the method embodiments above; and the chip system 1100 can be used to perform the processing related operations of the second device in the method embodiments above.

[0240] Under this design, the communication apparatus 1000 can include modules such as the short-range communication module 1640, the sensor 1610, the display 1620, or the camera 1630 as shown in FIG. 13.

[0241] The short-range communication module 1640 can include a wireless network (WI-FI, or WIFI), or a module supporting short-range communication such as Bluetooth.

[0242] The sensor 1610 can include a pressure sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc.

[0243] The display 1620 is configured to display images, videos, and the like. The display includes a display panel. The display panel can adopt a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a Miniled, a MicroLed, a Micro-oLed, a quantum dot light emitting diode (QLED), or the like. For example, in embodiments of the present application, the display can be configured to display an interface required to be displayed by the communication apparatus 1000. For example, the communication apparatus 1000 can realize the display function by means of a graphic processing unit (GPU), the display, and an application processor, and the like. The GPU is a microprocessor for image processing, which is connected to the display and the application processor. The GPU is configured to perform mathematical and geometric calculations for graphics rendering. The chip system 1100 can include one or more GPUs, which execute program instructions to generate or change display information.

[0244] The camera 1630 is configured to acquire images, videos, and the like.

[0245] It can be understood that the structure shown in FIG. 13 does not constitute a specific limitation on the communication apparatus 1000, and the specific structure of the terminal device and / or the network device can refer to that shown in FIG. 13. In some embodiments, the communication apparatus 1000 can also include more or fewer components than those shown in FIG. 13, or combine certain components, or split certain components, or different component arrangements, and the like. Alternatively, some components shown in FIG. 13 can be implemented in hardware, software, or a combination of software and hardware, and the terminal device and / or the network device can add or reduce components on the basis of the structure given in FIG. 13.

[0246] FIG. 14 is a schematic block diagram of a communication apparatus according to an embodiment of the present application. As shown in FIG. 14, the communication apparatus 2000 can include a baseband unit 2100, which can communicate with external devices through a cellular RF transceiver 2200 (for example, when the communication apparatus 2000 is a terminal device, the baseband unit 2100 can communicate with a network device through the cellular RF transceiver 2200; for another example, when the communication apparatus 2000 is a network device, the baseband unit 2100 can communicate with a terminal device and / or a core network device through the cellular RF transceiver 2200).

[0247] The baseband unit 2100 can include a computer-readable medium / memory. The baseband unit 2100 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the baseband unit 2100, causes the baseband unit 2100 to perform the various functions described supra. The computer-readable medium / memory can also be used for storing data that is manipulated by the baseband unit 2100 when executing software.

[0248] The baseband unit 2100 further includes a reception unit 2010, a management unit 2020 and a transmission unit 2030. The management unit 2020 includes the one or more sub-units shown in FIG. 14 (e.g., a signal generating sub-unit and a signal analyzing sub-unit, wherein the signal generating sub-unit can be used for the generation of the sensing signal in the above-described method embodiments, and the signal analyzing sub-unit can be used for the analysis of the sensing signal in the above-described method embodiments). The units within the management unit 2020 can be stored in the computer-readable medium / memory and / or configured as hardware within the baseband unit 2100. Among them, the reception unit 2010 and the transmission unit 2030 can be referred to as a transceiver unit.

[0249] When the communication apparatus 2000 is used to implement the functions of the first device in the above-described method embodiments, the reception unit 2010 is configured to perform the receiving steps of the first device, the transmission unit 2030 is configured to perform the transmitting steps of the first device, and the management unit 2020 is configured to perform the processing steps of the first device.

[0250] For example, when the apparatus 2000 is used to perform the method in FIG. 7, the reception unit 2010 can be configured to perform the steps of receiving information in the method; the management unit 2020 can be configured to perform the processing steps in the method; and the transmission unit 2030 can be configured to perform the steps of transmitting information in the method.

[0251] When the communication apparatus 2000 is used to implement the functions of the second device in the above-described method embodiments, the reception unit 2010 is configured to perform the receiving steps of the second device, the transmission unit 2030 is configured to perform the transmitting steps of the second device, and the management unit 2020 is configured to perform the processing steps of the second device.

[0252] For example, when the apparatus 2000 is used to perform the method in FIG. 7, the reception unit 2010 can be configured to perform the steps of receiving information in the method; the management unit 2020 can be configured to perform the processing steps in the method; and the transmission unit 2030 can be configured to perform the steps of transmitting information in the method.

[0253] For more details about the above-described reception unit 2010, management unit 2020 and transmission unit 2030, please refer to the related descriptions in the above-described method embodiments, which will not be repeated here.

[0254] FIG. 15 is a schematic block diagram of a chip system 3000 according to an embodiment of the present application. The chip system may, for example, include a modem chip, also referred to as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip that includes a modem core.

[0255] As shown in FIG. 15, the chip system (or also referred to as a processing system) includes a processor 3100, a memory 3200, and an input / output interface 3300.

[0256] The processor 3100 may, for example, be a processing circuit in the chip system, including at least one processor, such as the processor 1 and the processor 2 shown in FIG. 15. The processor 3100 may be coupled to the memory 3200 to invoke instructions in the memory 3200, so that the chip system can implement the methods and functions of the embodiments of the present application. The input / output interface 3300 may, for example, be an input / output circuit in the chip system to output information processed by the chip system or input data or signaling information to be processed by the chip system.

[0257] As an example, the chip system is configured to implement operations performed by the first device or the second device in the above method embodiments.

[0258] For example, the processor 3100 is configured to implement processing-related operations performed by the first device or the second device in the above method embodiments, which can be implemented as described above. The input / output interface 3300 is configured to implement sending and / or receiving-related operations performed by the first device or the second device in the above method embodiments, which can be implemented as described above.

[0259] FIG. 16 is a schematic block diagram of another chip system 4000 according to an embodiment of the present application. As shown in FIG. 16, the chip system (or also referred to as a processing system) includes an input / output interface 4100 and a logic circuit 4200. The input / output interface 4100 may, for example, be an input / output circuit in the chip system to output information processed by the chip system or input data or signaling information to be processed by the chip system, which can be implemented as described above. The logic circuit 4200 is configured to implement the communication method described above, which can be implemented as described above.

[0260] As an example, the chip system is configured to implement operations performed by the first device or the second device in the above method embodiments.

[0261] For example, the logic circuit 4200 is configured to implement the processing-related operations performed by the first device or the second device in the above method embodiments; and the input / output interface 4100 is configured to implement the sending and / or receiving-related operations performed by the first device or the second device in the above method embodiments.

[0262] The embodiments of the present application further provide a computer readable storage medium, having stored thereon computer instructions for implementing the method performed by the first device or the second device in the above method embodiments.

[0263] For example, the computer program, when executed by a computer, enables the computer to implement the method performed by the first device or the second device in the above method embodiments.

[0264] The embodiments of the present application further provide a computer program product, containing instructions, which, when executed by a computer, implement the method performed by the first device or the second device in the above method embodiments.

[0265] The embodiments of the present application further provide a communication system, comprising at least one of the first device or the second device.

[0266] The above-described any device-related content can refer to the corresponding method embodiments provided above for explanation and beneficial effects, which will not be repeated here.

[0267] Those skilled in the art can understand that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art 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.

[0268] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the above method embodiments, which will not be described here.

[0269] 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 described device embodiments are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the 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 can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0270] The units described as separate components can or can not be physically separate, and the components shown 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. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0271] In addition, each functional unit in the various embodiments of the present application can be integrated into a processing unit, or each unit can be a physically independent unit, or two or more units can be integrated into one unit.

[0272] 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 this understanding, the technical solutions of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including 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 described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, 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 comprises: obtaining first configuration information, the first configuration information being used for indicating M code division multiplexing (CDM) groups, wherein each of the M CDM groups comprises a plurality of ports, and the plurality of ports in each of the CDM groups occupy same frequency domain resources; transmitting L sensing signals according to the first configuration information, wherein the L sensing signals correspond to the plurality of ports in at least one of the M CDM groups, and L is a positive integer less than or equal to M.

2. The method of claim 1, wherein, A demodulation reference signal (DMRS) and the sensing signal correspond to same ports.

3. The method according to claim 1 or 2, characterized in that, The plurality of ports in each of the CDM groups are orthogonal through an orthogonal cover code (OCC).

4. The method according to any one of claims 1 to 3, characterized in that, The sensing signal comprises sensing data and / or a sensing reference signal, wherein the sensing data is obtained through quadrature phase shift keying (QPSK) modulation or quadrature amplitude modulation (QAM); the sensing reference signal is obtained through QPSK modulation.

5. The method according to any one of claims 1 to 4, characterized in that, The at least one CDM group is composed of M1 CDM groups, and the method further comprises: when the M1 is less than the M, repeatedly transmitting one or more of the L sensing signals on subcarriers corresponding to first ports, or performing power boosting on the L sensing signals; wherein the first ports are at least one port in M-M1 CDM groups other than the M1 CDM groups in the M CDM groups, and M1 is a positive integer.

6. The method of claim 5, wherein, The method further comprises: receiving first indication information, wherein the first indication information is used for indicating that subcarriers corresponding to the first ports are used for repeatedly transmitting one or more of the L sensing signals; or the first indication information is used for indicating that power boosting is performed on the L sensing signals.

7. The method according to claim 5 or 6, characterized in that, The power boosting on the L sensing signals comprises: performing power boosting on the L sensing signals according to second indication information; wherein the second indication information is associated with at least one of subcarriers corresponding to at least one port in the M-M1 CDM groups, subcarriers corresponding to at least one port in the M1 CDM groups, or the M CDM groups.

8. The method according to any one of claims 1 to 7, characterized in that, The plurality of ports comprise sensing ports, and the method further comprises: obtaining second configuration information, the second configuration information being used for indicating a correspondence between a number K of the sensing ports and the M CDM groups, and K is an integer greater than or equal to 2.

9. The method of claim 8, wherein when M is equal to 2 and the K is less than or equal to 4, the second configuration information is further used for indicating one of the M CDM groups.

10. The method of claim 8 or 9, wherein When M is equal to 2, and the K is greater than 4 and less than or equal to 8, each of the M CDM groups comprises one or a said sensing port, represents a floor operation.

11. The method of any one of claims 8 to 10, wherein When M is equal to 3, and the K is greater than 8 and less than or equal to 12, each of the M CDM groups includes one or a said sensing port, represents a floor operation.

12. A communication method, comprising: The method comprises: transmitting first configuration information, the first configuration information being used for indicating M code division multiplexing (CDM) groups, wherein each of the M CDM groups comprises a plurality of ports, and the plurality of ports in each of the CDM groups occupy same frequency domain resources; receive L sensing signals according to the first configuration information, wherein the L sensing signals correspond to a plurality of ports in at least one of the M CDM groups, L is a positive integer less than or equal to M.

13. The method of claim 12, wherein, The demodulation reference signal (DMRS) and the sensing signal correspond to a same port.

14. The method according to claim 12 or 13, characterized in that, The plurality of ports in each CDM group are orthogonalized by an orthogonal cover code (OCC).

15. The method according to any one of claims 12 to 14, characterized in that, The sensing signal includes sensing data and / or a sensing reference signal, wherein The sensing data is obtained by quadrature phase shift keying (QPSK) modulation or quadrature amplitude modulation (QAM); The sensing reference signal is obtained by quadrature phase shift keying (QPSK) modulation.

16. The method according to any one of claims 12 to 15, characterized in that, The at least one CDM group is composed of M1 CDM groups, and the method further includes: when the M1 is less than the M, repeating receiving one or more of the L sensing signals on a subcarrier corresponding to a first port, or performing power boosting on the L sensing signals; wherein the first port is at least one port in M-M1 CDM groups other than the M1 CDM groups in the M CDM groups, and M1 is a positive integer.

17. The method of claim 16, wherein, The method further includes: sending first indication information, wherein the first indication information is used to indicate that a subcarrier corresponding to the first port is used for repeated transmission of one or more of the L sensing signals; or the first indication information is used to indicate that power boosting is performed on the L sensing signals.

18. The method according to any one of claims 12 to 17, characterized in that, The plurality of ports include sensing ports, and the method further includes: sending second configuration information, the second configuration information being used to indicate a correspondence between a number K of the sensing ports and the M CDM groups, K being an integer greater than or equal to 2.

19. The method of claim 18, wherein when M is equal to 2 and the K is less than or equal to 4, the second configuration information is further used to indicate one CDM group in the M CDM groups.

20. The method of claim 18 or 19, wherein When M is equal to 2, and the K is greater than 4 and less than or equal to 8, each of the M CDM groups includes one or a said sensing port, represents a floor function.

21. The method of any one of claims 18 to 20, wherein When M is equal to 3, and the K is greater than 8 and less than or equal to 12, each of the M CDM groups includes one or a said sensing port, represents a floor function.

22. A communications device, characterized by a module or unit for performing the method of any one of claims 1 to 11, or a module or unit for performing the method of any one of claims 12 to 21.

23. A communications device, characterized by at least one processor configured to execute computer programs or instructions to cause the method of any one of claims 1 to 11 to be performed, or to cause the method of any one of claims 12 to 21 to be performed.

24. The communication apparatus of claim 23, wherein the communication apparatus further includes a memory configured to store the computer programs or instructions; and / or the communication apparatus further includes a communication interface coupled to the at least one processor, the communication interface being configured to input and / or output information.

25. A computer-readable storage medium, characterized in that, The computer readable storage medium is for storing a computer program which, when run on a computer, causes the method of any one of claims 1 to 11 to be performed, or causes the method of any one of claims 12 to 21 to be performed.

26. A computer program product, characterised in that, The computer program or instructions are for causing the method of any one of claims 1 to 11 to be performed, or for causing the method of any one of claims 12 to 21 to be performed, when executed by a processor.

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