CN112448744B

CN112448744B - Signal measurement method and device

Info

Publication number: CN112448744B
Application number: CN201910818127.7A
Authority: CN
Inventors: 管鹏
Original assignee: Chengdu Huawei Technology Co Ltd
Current assignee: Chengdu Huawei Technology Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2022-09-09
Anticipated expiration: 2039-08-30
Also published as: CN112448744A; WO2021036773A1

Abstract

The embodiment of the application provides a signal measurement method and a signal measurement device, wherein the method comprises the following steps: the first device receives N reference signals from the second device, wherein N is an integer greater than 0; the first equipment measures the N reference signals to obtain N signal measurement information; the first device determines a first combination according to the N pieces of signal measurement information; the first combination is one of H combinations composed of the N pieces of signal measurement information; the first equipment sends first information to the second equipment; the first information is used to indicate the first combination. By the method, after the first device receives the N reference signals, the first device only needs to feed back the first combination determined according to the N reference signals through the first information, and does not need to feed back each reference signal, so that the resource overhead of feedback can be reduced, and the resource utilization rate is improved.

Description

Signal measurement method and device

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a signal measurement method and apparatus.

Background

In order to overcome the problem of large path loss of high-frequency millimeter waves, high-gain directional beams can be formed between the network equipment and the terminal equipment by using an array technology for communication, so that the antenna gain can be improved, and the path loss can be compensated. Before communication is performed by using directional beams, beam training needs to be performed between the network device and the terminal device to achieve beam alignment.

Current beam training methods generally include the following steps: step 1, a network device configures a Channel state information reference signal (CSI-RS) resource set, and sends CSI-RS using beams in different directions in each CSI-RS resource in the CSI-RS resource set. And 2, the terminal equipment receives the CSI-RS in each CSI-RS resource and measures the signal quality of the CSI-RS received on each CSI-RS resource. And 3, the terminal equipment selects the optimal wave beam according to the measurement result and feeds the optimal wave beam back to the network equipment. The subsequent network device and the terminal device may use the beam selected in the beam training process for communication.

As can be seen from the above process, since the CSI-RS needs to be transmitted using a beam in one direction in each CSI-RS resource, more resources need to be consumed.

Disclosure of Invention

The embodiment of the application provides a signal measurement method and a signal measurement device, which are used for solving the problem of how to reduce resource overhead.

In a first aspect, an embodiment of the present application provides a signal measurement method, including: the first device receives N reference signals from the second device, wherein N is an integer greater than 0; the first equipment measures the N reference signals to obtain N signal measurement information; the first device determines a first combination according to the N pieces of signal measurement information; the first equipment sends first information to the second equipment; the first information is used to indicate the first combination.

Illustratively, the first combination is one of H combinations of the N signal measurement information, any one of the H combinations including at least one of the N signal measurement information; h is less than or equal to 2 ^N Is an integer of (2).

Illustratively, the first combination is one of H combinations of the N reference signals, any one of the H combinations including at least one of the N reference signals.

For example, each of N reference signals may be mapped to one time frequency resource for transmission, and the first combination is one of H combinations formed by N time frequency resources on which the N reference signals are mapped, where any one of the H combinations includes at least one of the N time frequency resources.

Illustratively, each of the N reference signals is transmitted via one multimodal beam, in this implementation the first combination is one of H combinations of N multimodal beams transmitting the N reference signals, any one of the H combinations including at least one multimodal beam of the N multimodal beams.

By the method, after the first device receives the N reference signals, the first device only needs to feed back the first combination determined according to the N reference signals through the first information, and does not need to feed back each reference signal, so that the resource overhead of feedback can be reduced, and the resource utilization rate is improved.

In one possible design, the first device determines a first combination from the N signal measurement information, including: and the first equipment determines the combination with the largest signal characteristic as the first combination from H combinations formed by the N pieces of signal measurement information.

In one possible design, when the first combination is the combination with the largest signal characteristic, the first combination is the combination of the H combinations that satisfies one or more of the following conditions:

when a second combination of the H combinations includes signal measurement information corresponding to all reference signals in the first combination, the sum of all signal measurement information in the first combination is smaller than the sum of all signal measurement information in the second combination, and the difference between the sum of all signal measurement information in the second combination and the sum of all signal measurement information in the first combination is smaller than a first threshold; the second combination is any one combination of the H combinations except the first combination;

when the second combination of the H combinations and the first combination do not have the signal measurement information corresponding to the same reference signal, the difference value between the sum of all the signal measurement information in the first combination and the sum of all the signal measurement information in the second combination is larger than a second threshold value; when a second combination of the H combinations includes signal measurement information corresponding to a part of the reference signals in the first combination, a difference between a sum of all signal measurement information in the first combination and a sum of all signal measurement information in the second combination is greater than a third threshold.

In one possible design, each of the N reference signals is transmitted via one multi-peak beam; the one multi-peak beam is a beam comprising at least two main lobe directions, and the N multi-peak beams corresponding to the N reference signals comprise M main lobe directions; m is an integer greater than N.

By the method, each reference signal is transmitted by one multi-peak beam, and the reference signals are transmitted in a plurality of main lobe directions by one time-frequency resource, so that the consumption of the time-frequency resource for transmitting the reference signals can be reduced, and the resource utilization rate is improved.

In one possible design, for any two of the M main lobe directions: a first mainlobe direction and a second mainlobe direction, there being at least one different multimodal beam among the N multimodal beams, P multimodal beams including the first mainlobe direction and Q multimodal beams including the second mainlobe direction, P, Q being an integer greater than 0.

In one possible design, the first information is an identification of the third main lobe direction; when the first combination corresponds to only one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not the main lobe direction in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-modal beams, the third main lobe direction is a main lobe direction that the first combination corresponds to and transmits both of the at least two multi-modal beams.

In one possible design, the method further includes: the first device receives data from the second device through a beam in the third mainlobe direction.

In one possible design, each of the N reference signals maps one time-frequency resource; the first combination comprises X pieces of signal measurement information, wherein X is an integer greater than 0; the first information is the identification of X time frequency resources, and the X signal measurement information corresponding to X reference signals borne by the X time frequency resources.

In one possible design, the first combination includes X signal measurement information, X being an integer greater than 0; the first information is the identifier of the X reference signals corresponding to the X signal measurement information.

In a second aspect, the present application further provides a communication device having a function of implementing any one of the methods provided by the first aspect. The communication device may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or units corresponding to the above functions.

In one possible implementation, the communication device includes: a processor configured to enable the communication apparatus to perform the respective functions of the first device in the above-illustrated method. The communication device may also include a memory, which may be coupled to the processor, that retains program instructions and data necessary for the communication device. Optionally, the communication apparatus further includes a communication interface for supporting communication between the communication apparatus and a second device or the like.

In one possible implementation, the communication device comprises corresponding functional units, each for implementing the steps in the above method. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In a possible implementation manner, the structure of the communication device includes a processing unit and a communication unit, and these units may perform corresponding functions in the above method example, specifically refer to the description in the method provided in the first aspect, and are not described herein again.

In a third aspect, an embodiment of the present application provides a signal measurement method, including: the second equipment sends N reference signals to the first equipment, wherein N is an integer greater than 0; the second device receives first information from the first device; the first information is used for indicating a first combination, the first combination is one of H combinations formed by N pieces of signal measurement information, and any combination of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is less than or equal to 2 ^N An integer of (d); the N pieces of signal measurement information are obtained by measuring according to the N reference signals; the second device determines the first combination according to the first information.

By the method, after the first device receives the N reference signals, the first device only needs to feed back the first combination determined according to the N reference signals through the first information, and does not need to respectively feed back each reference signal, so that the resource overhead of feedback can be reduced, and the resource utilization rate can be improved.

In one possible implementation, the first combination is the combination with the largest signal characteristic among the H combinations.

In a possible implementation manner, when the first combination is the combination with the largest signal characteristic, the first combination is the combination of the H combinations which satisfies one or more conditions of the following:

when the second combination of the H combinations and the first combination do not have the signal measurement information corresponding to the same reference signal, the difference value between the sum of all the signal measurement information in the first combination and the sum of all the signal measurement information in the second combination is larger than a second threshold value;

when a second combination of the H combinations includes signal measurement information corresponding to a part of the reference signals in the first combination, a difference between a sum of all signal measurement information in the first combination and a sum of all signal measurement information in the second combination is greater than a third threshold.

In one possible implementation, each of the N reference signals is transmitted via one multi-peak beam; the one multi-modal beam is a beam comprising at least two main lobe directions, and the N multi-modal beams corresponding to the N reference signals comprise M main lobe directions; m is an integer greater than N.

In one possible implementation, for any two main lobe directions of the M main lobe directions: a first mainlobe direction and a second mainlobe direction, there being at least one different multimodal beam among the N multimodal beams, P multimodal beams including the first mainlobe direction and Q multimodal beams including the second mainlobe direction, P, Q being an integer greater than 0.

In a possible implementation manner, the first information is an identifier of the third main lobe direction; when the first combination only corresponds to one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not included in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-peak beams, the third main lobe direction is a main lobe direction included by the first combination corresponding to the at least two multi-peak beams.

In one possible implementation, each of the N reference signals maps a time-frequency resource; the first combination comprises X pieces of signal measurement information, wherein X is an integer greater than 0; the first information is the identification of X time frequency resources, and the X signal measurement information corresponding to X reference signals borne by the X time frequency resources.

In one possible implementation, the first combination includes X pieces of signal measurement information, where X is an integer greater than 0; the first information is the identifier of the X reference signals corresponding to the X signal measurement information.

In a fourth aspect, the present application further provides a communication device having a function of implementing any one of the methods provided by the second aspect. The communication device may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or units corresponding to the above functions.

In one possible implementation, the communication device includes: a processor configured to enable the communication apparatus to perform the respective functions of the second device in the above-illustrated method. The communication device may also include a memory, which may be coupled to the processor, that retains program instructions and data necessary for the communication device. Optionally, the communication apparatus further includes a communication interface for supporting communication between the communication apparatus and the first device or the like.

In a possible implementation manner, the structure of the communication device includes a processing unit and a communication unit, and these units may perform corresponding functions in the foregoing method example, which is specifically referred to the description in the method provided in the second aspect, and details are not described here.

In a fifth aspect, an embodiment of the present application provides a communication apparatus, including a processor coupled with at least one memory: the processor is configured to execute a computer program or instructions stored in the at least one memory, which when executed, performs the method of any one of the possible designs of any one of the above aspects.

In a sixth aspect, the present application provides a readable storage medium, which includes a program or instructions, and when the program or instructions are executed, the method in any possible design of the foregoing aspect is executed.

In a seventh aspect, an embodiment of the present application provides a chip, where the chip is connected to a memory, and is configured to read and execute a computer program or instructions stored in the memory, and when the computer program or instructions are executed, the method in any possible design of any aspect is executed.

In an eighth aspect, the present application provides a computer program product, which when read and executed by a computer, performs the method in any one of the possible designs of the above aspects.

In a ninth aspect, an embodiment of the present application provides a communication apparatus, including a processor, a transceiver, and a memory;

the processor is configured to execute a computer program or instructions stored in the memory, which when executed, causes the communication device to implement the method in any of the possible designs of any of the above aspects.

In a tenth aspect, an embodiment of the present application provides a system, which includes the first device provided in the second aspect and the second device provided in the fourth aspect.

Drawings

Fig. 1 is a schematic diagram of a possible communication system architecture suitable for the method provided in the embodiment of the present application;

fig. 2 is a schematic flow chart of a signal measurement method according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a multi-modal beam provided by an embodiment of the present application;

fig. 4 is a schematic diagram of a relationship between a multimodal beam and a time-frequency resource according to an embodiment of the present application;

fig. 5 is a schematic flowchart of a signal measurement method according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described in detail below with reference to the drawings attached hereto.

The embodiment of the application can be applied to various mobile communication systems, such as: a New Radio (NR) system, a Long Term Evolution (LTE) system, an advanced long term evolution (LTE-a) system, a Universal Mobile Telecommunications System (UMTS), an evolved Long Term Evolution (LTE) system, a future communication system, and other communication systems, and in particular, is not limited herein.

For the convenience of understanding the embodiments of the present application, a communication system applicable to the embodiments of the present application will be first described in detail by taking the communication system shown in fig. 1 as an example. Fig. 1 shows an architecture of a possible communication system suitable for the method provided in the embodiment of the present application, where the architecture of the communication system includes a network device and at least one terminal device, where: the network device may establish a communication link with at least one terminal device (e.g. terminal device 1 and terminal device 2 shown in the figure) via beams of different directions. The network device may provide a radio access related service for the at least one terminal device, implementing one or more of the following functions: radio physical layer functions, resource scheduling and radio resource management, quality of service (Qos) management, radio access control, and mobility management functions. The at least one terminal device may also form a beam for data transmission with the network device. In this embodiment, the network device and the at least one terminal device may communicate with each other through a beam.

It should be noted that the architecture of the communication system shown in fig. 1 is not limited to include only the devices shown in the figure, and may also include other devices not shown in the figure, and specific details of the present application are not listed here.

The following is a definition of terms of art that may appear in the examples of the present application.

Beam (beam): a beam is a communication resource. The beam may be a wide beam, or a narrow beam, or other type of beam. The technique of forming the beam may be a beamforming technique or other technical means. The beamforming technique may be embodied as a digital beamforming technique, an analog beamforming technique, a hybrid digital/analog beamforming technique. Different beams may be considered different resources. The same information or different information may be transmitted through different beams. Alternatively, a plurality of beams having the same or similar communication characteristics may be regarded as one beam. One beam may include one or more antenna ports for transmitting data channels, control channels, sounding signals, and the like, for example, a transmission beam may refer to the distribution of signal strength formed in different spatial directions after signals are transmitted through the antenna, and a reception beam may refer to the distribution of signal strength in different spatial directions of wireless signals received from the antenna. It is to be understood that the one or more antenna ports forming one beam may also be regarded as one set of antenna ports. The beam may also be embodied in a spatial filter (spatial filter) in the protocol.

Quasi-co-location (QCL): the co-location relationship is used to indicate that the plurality of resources have one or more same or similar communication characteristics, and for the plurality of resources having the co-location relationship, the same or similar communication configuration may be adopted. For example, if two antenna ports have a co-located relationship, the large scale property of the channel for transmitting a symbol on one port can be inferred from the large scale property of the channel for transmitting a symbol on the other port. The large scale features may include: delay spread, average delay, doppler spread, doppler shift, average gain, reception parameters, terminal device received beam number, transmit/receive channel correlation, received angle of Arrival, spatial correlation of receiver antennas, angle of Arrival (angle-of-Arrival, AoA), average angle of Arrival, AoA spread, etc.

Spatial quasi-parity (spatial QCL): a spatial QCL can be considered as a type of QCL. Two angles can be understood for spatial: from the transmitting end or from the receiving end. From the transmitting end, if two antenna ports are spatially quasi co-located, it means that the corresponding beam directions of the two antenna ports are spatially identical, i.e., spatial filters are the same. From the receiving end, if it is said that the two antenna ports are spatially quasi-co-located, it means that the receiving end can receive the signals transmitted by the two antenna ports in the same beam direction, i.e. with respect to the receiving parameter QCL.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

In this application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future fifth Generation (5th Generation, 5G) System, or a New Radio Network (NR).

Terminal equipment in the embodiments of the present application may refer to user equipment, access terminals, subscriber units, subscriber stations, mobile stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user devices. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like, which are not limited in this embodiment of the present application.

Illustratively, the terminal device may include: a Radio Resource Control (RRC) signaling interworking module, a Medium Access Control (MAC) signaling interworking module, and a Physical (PHY) signaling interworking module. The RRC signaling interaction module may be: and the network equipment and the terminal equipment are used for sending and receiving RRC signaling. The MAC signaling interaction module may be: a module for the network device and the terminal device to transmit and receive media access control element (MAC-CE) signaling. The PHY signaling and data may be: and the network equipment and the terminal equipment are used for sending and receiving the uplink control signaling or the downlink control signaling, and the uplink data and the downlink data.

The Access Network device in the embodiment of the present application may be a device for communicating with a terminal device, where the Access Network device may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) System or a Code Division Multiple Access (CDMA) System, may also be a Base Station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) System, may also be an evolved node b (eNB, or eNodeB) in an LTE System, and may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, and an access network device (e.g., a gNB) in a future 5G network or an access network device in a future evolved PLMN network, and the like, and the embodiment of the present application is not limited.

Illustratively, the network device may also include: the system comprises an RRC signaling interaction module, an MAC signaling interaction module and a PHY signaling interaction module.

In some deployments, the network devices may include Centralized Units (CUs) and Distributed Units (DUs). The network device may also include an Active Antenna Unit (AAU). The CU implements part of functions of the network device, and the DU implements part of functions of the network device, for example, the CU is responsible for processing non-real-time protocols and services, and implements functions of a Radio Resource Control (RRC) layer and a packet data convergence layer (PDCP) layer. The DU is responsible for processing a physical layer protocol and a real-time service, and implements functions of a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer, the higher layer signaling, such as the RRC layer signaling, may also be considered to be transmitted by the DU or by the DU + AAU under this architecture. It is to be understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Referring to fig. 2, a schematic flow chart of a signal measurement method provided in the embodiment of the present application is shown. In the flow shown in fig. 1, the first device and the second device may be specifically which devices, which is not limited in this application embodiment, for example, the first device may be a terminal device, and the second device may be a network device. Alternatively, the first device may be a network device, and the second device may be a terminal device.

Of course, the first device and the second device may both be terminal devices, or the first device and the second device may both be network devices. The first device may also be a chip disposed in the terminal device, and the second device may also be a chip disposed in the network device, or the first device may also be a chip disposed in the network device, and the second device may also be a chip disposed in the terminal device, which are not illustrated one by one here. As shown in fig. 2, the method includes:

step 201: the second device sends N reference signals to the first device, wherein N is an integer larger than 0.

In the embodiment of the present application, the reference signal may be any one of the following signals: the mobile station comprises a synchronization signal, a broadcast channel, a broadcast signal demodulation signal, a channel state information downlink signal (CSI-RS), a cell specific reference signal (CS-RS), a terminal specific reference signal (US-RS), a downlink control channel demodulation reference signal, a downlink data channel demodulation reference signal, and a downlink phase noise tracking signal.

Of course, the above is only an example, and the reference signal may be other types of signals, which are not individually illustrated herein.

Step 202: the first device receives N reference signals from the second device.

Step 203: and the first equipment measures the N reference signals to obtain N signal measurement information.

Step 204: the first device determines a first combination according to the N pieces of signal measurement information, and sends first information to the second device.

Wherein the first information is used to indicate the first combination.

In a first possible implementation manner, the first combination is one of H combinations composed of the N signal measurement information, and any one of the H combinations includes at least one of the N signal measurement information; h is less than or equal toIn 2 ^N Is an integer of (1).

In a second possible implementation, the first combination is one of H combinations composed of the N reference signals, and any one of the H combinations includes at least one of the N reference signals.

For example, in this embodiment of the present application, each of N reference signals sent by the second device may be mapped to one time-frequency resource to be sent, and how the second device specifically maps the reference signal to a corresponding time-frequency resource.

With reference to the foregoing description, in a third possible implementation manner, the first combination is one combination of H combinations formed by N time frequency resources for mapping the N reference signals, where any combination of the H combinations includes at least one time frequency resource of the N time frequency resources.

For example, in this embodiment of the present application, each of the N reference signals transmitted by the second device may be transmitted through one multi-peak beam; the one multi-modal beam is a beam comprising at least two main lobe directions.

Further, the N multi-peak beams corresponding to the N reference signals may include M main lobe directions in total; m is an integer greater than N.

For example, as shown in fig. 3, a schematic diagram of a multi-peak beam is provided in the embodiments of the present application. The existing single-peak beam only has one main lobe direction, namely, when communication is carried out, the antenna gain is high only in one direction, the signal-to-noise ratio of signals in other directions is low, the signal quality is poor, and a receiving party cannot accurately demodulate the received signals. Whereas a multi-peak beam is a beam having a plurality of main lobe directions, the multi-peak beam shown in fig. 3 has 3 main lobe directions, each main lobe direction has a high antenna gain, and a receiving side can accurately demodulate a received signal in each main lobe direction.

With reference to the above description, in a fourth possible implementation manner, each of the N reference signals is transmitted through one multimodal beam, in this implementation manner, the first combination is one of H combinations formed by N multimodal beams that transmit the N reference signals, and any one of the H combinations includes at least one multimodal beam among the N multimodal beams.

Step 205: the second device receives first information from the first device, and determines the first combination according to the first information.

Illustratively, the second device may further determine a third main lobe direction according to the first combination, and use the third main lobe direction as a beam direction used when transmitting a signal to the first device. How the second device determines the third main lobe direction specifically may refer to the following description, and details are not repeated here.

In combination with the above description, in this embodiment, before sending the reference signal, the second device may send configuration information to the first device, where the configuration information includes at least one of the following information:

the number N of time-frequency resources bearing reference signals;

the number of main lobe directions each multimodal beam comprises;

the number M of total mainlobe directions comprised by the N multi-modal beams, M being an integer greater than N;

types of signal measurement information, including but not limited to layer 1reference signal received power (L1-RSRP), layer 1reference signal received quality (L1-RSRQ), Received Signal Strength Indication (RSSI), signal to noise ratio (SNR), and signal to interference plus noise ratio (SINR);

the beam training indication information is used for indicating the terminal equipment to determine a first combination according to the N pieces of signal measurement information and feeding back first information indicating the first combination;

the feedback indication information is used to indicate an implementation manner of the first information, and the implementation manner of the first information may refer to the following description, which is not described herein again.

The above are merely examples, and the configuration information may also include other contents, which are not listed here.

Accordingly, when the first device receives the configuration information, the information such as the number of reference signals, the number of main lobe directions included in each multi-peak beam, and the like may be determined according to the configuration information.

It should be noted that, when the configuration information includes some of the contents described above, other contents may be predetermined, for example, the type of the predetermined signal measurement information is RSRP, and the type of the measurement information may not be included in the configuration information. Further, the second device may not send the configuration information, and at this time, the number N of time-frequency resources carrying the reference signal, the number of main lobe directions included in each multimodal beam, the total number M of main lobe directions, the type of the signal measurement information, the beam training indication information, and the feedback indication information may all be predetermined.

As can be seen from the foregoing description, in step 201, the second device transmits N reference signals, needs to be mapped into N time-frequency resources, and needs to transmit through N multimodal beams.

For example, there is a corresponding relationship among N reference signals, N time-frequency resources, and N multimodal beams, and the corresponding relationship may have various implementations, for example, as shown in table 1.

TABLE 1

Reference signal	Time frequency resource	Multi-peak beam
			Reference signal 1	Time frequency resource 1	Multimodal beam 1
Reference signal 2	Time frequency resource 2	Multiple peak beam 2
			…	…	…
Reference signal N	Time frequency resource N	Multimodal beam N

In table 1, reference signal 1 is mapped to time-frequency resource 1 and transmitted through multi-peak beam 1. Other situations can be analogized, and are not described in detail.

Illustratively, in the embodiment of the present application, the N multi-peak beams further need to satisfy the following condition:

first, the number M of total mainlobe directions comprised by the N multi-modal beams;

second, for any two multi-peak beams of the N multi-peak beams, the main lobe directions included by the any two multi-peak beams cannot be completely the same.

For example, if the multimodal beam 1 comprises a main lobe direction 1 and a main lobe direction 2, the multimodal beam 2 cannot also comprise only a main lobe direction 1 and a main lobe direction 2, e.g. the multimodal beam 2 may comprise a main lobe direction 1 and a main lobe direction 3.

Third, for any two main lobe directions of the M main lobe directions: a first mainlobe direction and a second mainlobe direction, there being at least one different multimodal beam among the N multimodal beams, P multimodal beams including the first mainlobe direction and Q multimodal beams including the second mainlobe direction, P, Q being an integer greater than 0.

For example, if the P multi-modal beams comprising the first mainlobe direction are multi-modal beam 1 and multi-modal beam 2, then at least one of the Q multi-modal beams comprising the second mainlobe direction is a multi-modal beam 1 and a multi-modal beam other than multi-modal beam 2, e.g., the Q multi-modal beams shown are multi-modal beam 2 and multi-modal beam 3.

In combination with the above description, in this embodiment, a gray code encoding manner may be adopted to establish a correspondence between the N time-frequency resources and the M main lobe directions included in the N multimodal beams, so that the N multimodal beams satisfy the above condition.

For example, N equals 3 and M equals 7. That is, 3 reference signals are required to be sent, and respectively correspond to the time frequency resource 1, the time frequency resource 2 and the time frequency resource 3; there are 7 main lobe directions, which are main lobe direction 1 to main lobe direction 7. The corresponding relationship between 3 time-frequency resources and 7 main lobe directions established according to the gray code encoding method can be shown in fig. 4 and table 2.

TABLE 2

Main lobe direction	Time frequency resource 1	Time frequency resource 2	Time frequency resource 3
				Main lobe direction 1	0	0	1
Main lobe direction 2	0	1	0
				Main lobe direction 3	0	1	1
Main lobe direction 4	1	0	0
				Main lobe direction 5	1	0	1
Main lobe direction 6	1	1	0
				Main lobe direction 7	1	1	1

In table 2, 0 indicates that there is no correspondence between the main lobe direction and the time-frequency resource, and 1 indicates that there is a correspondence between the main lobe direction and the time-frequency resource. For example, in table 2, there is a corresponding relationship between the main lobe direction 1 and the time-frequency resource 3, and there is no corresponding relationship with other time-frequency resources; the main lobe direction 7 corresponds to the time-frequency resource 1, the time-frequency resource 2, and the time-frequency resource 3, and so on, which is not described herein.

If a corresponding relationship exists between one main lobe direction and one time frequency resource, the multi-peak wave beam used for sending the reference signal mapped to the time frequency resource comprises the main lobe direction corresponding to the time frequency resource. For example, referring to table 2, reference signal 1 is mapped to time-frequency resource 1 for transmission, and the main lobe direction corresponding to time-frequency resource 1 is main lobe direction 4 to main lobe direction 7, so that the multi-peak beam 1 used for transmitting reference signal 1 includes main lobe directions 4 to main lobe direction 7. In the same way, when the reference signal 2 is mapped to the time-frequency resource 2 for transmission, the multi-peak beam 2 used for transmitting the reference signal 2 includes a main lobe direction which is a main lobe direction 2, a main lobe direction 3, a main lobe direction 6 and a main lobe direction 7; when the reference signal 3 is mapped to the time-frequency resource 3 for transmission, the multi-peak beam 3 used for transmitting the reference signal 3 includes a main lobe direction 1, a main lobe direction 3, a main lobe direction 5 and a main lobe direction 7.

As can be seen from the above description, the N multi-peak beams described above can be satisfied by the multi-peak beams 1 to 3 determined in table 2.

In step 202, when the first device receives each of the N reference signals, the directions of the adopted receiving beams are the same, that is, the direction of the receiving beam of the first device is fixed.

In step 203, the first device may measure each received reference signal, respectively, to obtain signal measurement information corresponding to each reference signal. The type of signal measurement information can be found in the foregoing description.

For example, when N is 3, the first device measures 3 reference signals mapped in time-frequency resources 1 to 3, respectively, to obtain 3 pieces of signal measurement information, which may be shown in table 3.

TABLE 3

Reference signal	Time frequency resource	Signal measurement information
			Reference signal 1	Time frequency resource 1	R1
Reference signal 2	Time frequency resource 2	R2
			Reference signal 3	Time frequency resource 3	R3

It should be noted that, as can be seen from the principle of beam communication, the antenna gain is the largest when receiving signals in the main lobe direction of the beam, and therefore, if the direction of the received beam matches the main lobe direction in the multi-peak beam, the signal measurement information measured by the first device is the largest.

In this embodiment, the N pieces of signal measurement information may be divided into a plurality of combinations, and each combination includes at least one piece of signal measurement information. According to the permutation and combination method, N pieces of signal measurement information can be divided into 2 ^N In practical cases, the N pieces of signal measurement information can be divided into 2 at most ^N -1 combination. For example, in conjunction with table 3, 3 pieces of signal measurement information in table 3 may be divided into 7 combinations, which may be specifically referred to table 4.

TABLE 4

Step 204: the first device determines, as a first combination, a combination having the largest signal characteristic among the H combinations composed of the N pieces of signal measurement information.

In a first possible implementation manner, the first combination is one of H combinations formed by the N pieces of signal measurement information, and when the first combination is the combination with the largest signal characteristic, the first combination is the combination satisfying at least one of the following conditions in the H combinations:

when a second combination of the H combinations comprises signal measurement information corresponding to all reference signals in a first combination, the sum of all signal measurement information in the first combination is smaller than the sum of all signal measurement information in the second combination, and the difference value between the sum of all signal measurement information in the second combination and the sum of all signal measurement information in the first combination is smaller than a first threshold value; the second combination is any one combination of the H combinations except the first combination;

in the embodiment of the present application, the difference between a and B refers to a difference obtained by subtracting B from a.

When the second combination of the H combinations and the first combination do not have signal measurement information corresponding to the same reference signal, the difference value between the sum of all the signal measurement information in the first combination and the sum of all the signal measurement information in the second combination is larger than a second threshold value;

thirdly, when a second combination of the H combinations comprises signal measurement information corresponding to part of the reference signals in the first combination, the difference value between the sum of all the signal measurement information in the first combination and the sum of all the signal measurement information in the second combination is larger than a third threshold value;

it should be noted that the above condition for determining the combination with the largest signal characteristic is only an example, and other conditions may exist, for example, the sum of all signal measurement information in the combination, the absolute value of the difference between the sum of all signal measurement information in any combination of the H combinations, and the sum of all signal measurement information in any combination of the H combinations, which are less than or equal to the third threshold, and the like, are not illustrated in sequence here.

The first threshold, the second threshold and the third threshold are all values greater than 0. The first threshold may be a value close to 0, the second threshold may be a value greater than the first threshold and less than or equal to a maximum value of signal measurement information that the first device can measure, and the third threshold may be a value less than or equal to the second threshold. The specific values of the first threshold, the second threshold, and the third threshold may be determined according to actual situations, and are not described herein again.

In a second possible implementation, the first combination is one of H combinations of N reference signals.

In this implementation, a third combination satisfying the condition may be determined from H combinations of N signal measurement information according to the condition in the first possible implementation. The combination formed by all the reference signals corresponding to the signal measurement information included in the third combination is the combination with the largest signal characteristic, i.e. the first combination.

For example, with reference to table 4, according to the conditions in the first possible implementation, the determined third combination is combination 5, and combination 5 includes signal measurement information R1 and R3, which are determined according to reference signal 1 and reference signal 3, respectively. For this purpose, the first combination is a combination of reference signal 1 and reference signal 3.

In a third possible implementation manner, the first combination is one combination of H combinations formed by N time-frequency resources mapping the N reference signals.

In this implementation, a third combination satisfying the condition may be determined from H combinations of N signal measurement information according to the condition in the first possible implementation. The combination formed by the time-frequency resources mapped by all the reference signals corresponding to the signal measurement information included in the third combination is the combination with the largest signal characteristic, i.e. the first combination.

For example, with reference to table 4, according to the conditions in the first possible implementation, the determined third combination is combination 5, and combination 5 includes signal measurement information R1 and R3, which are determined according to reference signal 1 and reference signal 3, respectively. The reference signal 1 is mapped in time frequency resource 1 and the reference signal 3 is mapped in time frequency resource 3, for which the first combination is a combination of time frequency resource 1 and time frequency resource 3.

In a fourth possible implementation, the first combination is one of H combinations consisting of N multi-peak beams transmitting the N reference signals.

In this implementation, a third combination satisfying the condition may be determined from H combinations of N signal measurement information according to the condition in the first possible implementation. The combination of the multi-peak beam formations corresponding to all the reference signals corresponding to the signal measurement information included in the third combination is the combination with the largest signal characteristic, i.e. the first combination.

For example, with reference to table 4, according to the conditions in the first possible implementation, the determined third combination is combination 5, and combination 5 includes signal measurement information R1 and R3, which are determined according to reference signal 1 and reference signal 3, respectively. The reference signal 1 is transmitted via the multimodal beam 1 and the reference signal 3 is transmitted via the multimodal beam 3, for which purpose the first combination is a combination of multimodal beam 1 and multimodal beam 3.

The following describes how to determine the combination with the largest signal characteristic by way of example, taking the first combination as one of H combinations composed of N pieces of signal measurement information as an example.

In combination with the above tables 2 to 4, it is assumed that R3 is the largest among R1, R2, and R3 measured by the first apparatus. Further, if combination 3 including R3 satisfies the following condition, combination 3 may be determined to be the combination with the largest signal characteristic:

the difference between combination 3 and combination 1, i.e., the difference between R3 and R1, is greater than a second threshold;

the difference between combination 3 and combination 2, i.e., the difference between R3 and R2, is greater than a second threshold;

the difference between combination 3 and combination 4, i.e. the difference between R3 and R1+ R2, is greater than a second threshold;

the difference between combination 6 and combination 3, i.e. the difference between R1+ R3 and R3, is less than a first threshold;

the difference between combination 5 and combination 3, i.e., the difference between R2+ R3 and R3, is less than a first threshold;

the difference between combination 7 and combination 3, i.e., the difference between R1+ R2+ R3 and R3, is less than the first threshold.

In connection with the above example, assuming that the combination 3 does not satisfy the above condition, the determination may be continued in the above manner, for example, to determine whether the combination 6 is the combination with the largest signal characteristic. Assuming that the sum of the signal measurement information in combination 6 is in the following relationship with the sum of the signal measurement information in other combinations, combination 6 can be determined to be the combination with the largest signal characteristic:

the difference between combination 6 and combination 1, i.e. the difference between R2+ R3 and R1, is greater than a second threshold;

the difference between combination 6 and combination 2, i.e., the difference between R2+ R3 and R2, is greater than a second threshold;

the difference between combination 6 and combination 3, i.e., the difference between R2+ R3 and R3, is greater than a second threshold;

the difference between combination 6 and combination 4, i.e., the difference between R2+ R3 and R1+ R2, is greater than the third threshold;

the difference between combination 6 and combination 5, i.e., the difference between R2+ R3 and R1+ R3, is greater than the third threshold;

the difference between combination 7 and combination 6, i.e., the difference between R1+ R2+ R3 and R2+ R3, is less than the first threshold.

Other cases may be analogized and will not be described herein.

The above are only examples, and other ways may also be used to determine the combination with the largest signal characteristic, which are not described in any further detail herein.

In step 204, the first information sent by the first device may directly indicate the first combination, or may indirectly indicate the first combination, which will be separately described below.

In a first possible implementation, the first information may indirectly indicate the first combination. In this implementation, the first information may be an identification of the third main lobe direction.

When the first combination corresponds to only one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not the main lobe direction in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations. When the first combination corresponds to at least two multimodal beams, the third main lobe direction is the main lobe direction comprised by both of the at least two multimodal beams.

When the first combination is one of H combinations formed by N pieces of signal measurement information, all the multi-peak beams corresponding to the first combination refer to all the multi-peak beams corresponding to the reference signals corresponding to all the signal measurement information included in the first combination; when the first combination is one of H combinations formed by N reference signals, all the multi-peak beams corresponding to the first combination refer to all the multi-peak beams corresponding to all the reference signals included in the first combination; when the first combination is one of H combinations formed by mapping N time frequency resources of N reference signals, all the multimodal beams corresponding to the first combination refer to all the multimodal beams corresponding to all the time frequency resources included in the first combination.

How the first device determines the third main lobe direction corresponding to the first combination is not limited in this embodiment of the application.

In one possible implementation, in combination with the above definition regarding the third main lobe direction, the first device may determine the third main lobe direction from the first combination.

For example, the second device may establish, by using a gray code encoding method, a correspondence between N time-frequency resources and M main lobe directions included in the N multimodal beams, and indicate, to the first device, the established correspondence between the N time-frequency resources and the M main lobe directions, which may be shown in table 2, for example. In connection with the example in table 2, if the first device determines that combination 1 is the first combination, then in connection with table 2, it can be seen that the channel measurement information in combination 1 is measured for reference signal 1 mapped in time-frequency resource 1, and the multi-peak beam transmitting reference signal 1 includes main lobe direction 4 to main lobe direction 7. Of main lobe directions 4 to 7, main lobe direction 5 also exists in the multi-peak beam transmitting reference signal 3, main lobe direction 6 also exists in the multi-peak beam transmitting reference signal 2, main lobe direction 7 also exists in the multi-peak beam transmitting reference signal 2 and reference signal 3, and only main lobe direction 4 exists only in the multi-peak beam transmitting reference signal 1, so that it can be determined that main lobe direction 4 is the third main lobe direction.

For the same reason, the corresponding third main lobe directions in different combinations can be obtained, which can be specifically shown in table 5.

TABLE 5

First combination	Direction of third main lobe	Main lobe sign
			Combination 1	Main lobe direction 4	100
Combination 2	Main lobe direction 2	010
			Combination 3	Main lobe direction 1	001
Combination 4	Main lobe direction 6	110
			Combination 5	Main lobe direction 5	101
Combination 6	Main lobe direction 3	011
			Combination 7	Main lobe direction 7	111

As can be seen from table 5, when the first combination is combination 1, the third main lobe direction is main lobe direction 4; when the first combination is combination 6, the third main lobe direction is main lobe direction 3, and other cases are not described again.

Table 5 also gives one possible implementation of the main lobe identification, for example, the main lobe identification of main lobe direction 1 is 001.

In another possible implementation manner, the second device may not indicate the established correspondence between the N time-frequency resources and the M main lobe directions to the first device, but indicate the correspondence between the third main lobe direction and the first combination to the first device, for example, the second device may indicate the correspondence shown in table 5 to the first device. When the first device determines the first combination, the third main lobe direction may be directly determined according to the correspondence between the third main lobe direction and the first combination, and an identifier of the third main lobe direction corresponding to the first combination is fed back.

In this implementation, the second device may determine, according to the first information, a third main lobe direction corresponding to the first combination, so that the third main lobe direction may be used as a beam direction for transmitting a signal to the first device.

For example, when the first device determines that the third main lobe direction corresponding to the first combination is the main lobe direction 6, the first information is the main lobe identification of the main lobe direction 6, that is, 110. When the second device receives the first information, the third main lobe can be determined according to the first information, so that the main lobe direction with the best signal quality can be determined as the main lobe direction 6 when the first device receives the reference signal.

In a second possible implementation manner, the first combination includes X reference signals, or X pieces of signal measurement information included in the first combination correspond to X reference signals, or X pieces of multimodal beam information included in the first combination correspond to X reference signals, or X pieces of time-frequency resources included in the first combination correspond to X reference signals.

In this implementation, the first information is the identifier of the X reference signals, and X is an integer greater than 0.

For example, N is equal to 3, i.e. 3 reference signals, respectively reference signal 1, reference signal 2, and reference signal 3, need to be sent; the identities of reference signals 1 to 3 may be as shown in table 6.

TABLE 6

Reference signal	Identification of reference signals
		Reference signal 1	01
Reference signal 2	10
		Reference signal 3	11
Retention mark	00

In table 6, the reserved flag is 00, and in a possible implementation manner, the number of bits included in the first information that is fed back to the second device by the first device each time is a fixed value, for this reason, the first information includes some redundant bits in addition to the bits representing the flags of the X reference signals, and the value of the redundant bits may be the reserved flag.

For example, N is 3, the identifier of each reference signal is represented by 2 bits, the number of bits included in the first information is 2N, that is, 6 bits, and when the first combination is different combinations, the first information may be as shown in table 7 in combination with table 6.

TABLE 7

As can be seen from table 7, when the first combination is combination 1, the first information is 010000. When the second device receives the first information of 010000, the second device may determine the first combination 1 according to the first information, and may determine the third main lobe direction corresponding to the combination 1 as the main lobe direction 4, so as to determine that the main lobe direction with the best signal quality is the main lobe direction 4 when the first device receives the reference signal. Other cases will not be described in detail.

It should be noted that, if the number of bits included in the first information fed back to the second device by the first device each time is not a fixed value, the first information may not include redundant bits and only include bits indicating the identities of the X reference signals, for example, in conjunction with table 7, when the first combination is combination 1, the first information is 01.

In a third possible implementation manner, the first combination includes X time frequency resources, or X reference signals corresponding to X signal measurement information included in the first combination map X time frequency resources, or X reference signals corresponding to X multimodal beam information included in the first combination map X time frequency resources, or X reference signals included in the first combination map X time frequency resources.

In this implementation, the first information is the identifier of the X time-frequency resources.

For example, N is equal to 3, that is, 3 reference signals need to be transmitted and mapped to time frequency resource 1, time frequency resource 2, and time frequency resource 3, respectively, and the identifiers of time frequency resources 1 to 3 may be as shown in table 8.

TABLE 8

Time frequency resource	Identification of time-frequency resources
		Time frequency resource 1	01
Time frequency resource 2	10
		Time frequency resource 3	11
Retention mark	00

In table 8, the reserved flag is 00, and in a possible implementation manner, the number of bits included in the first information that is fed back to the second device by the first device each time is a fixed value, for this reason, the first information includes some redundant bits in addition to bits representing the flags of the X reference signals, and the value of the redundant bits may be the reserved flag.

For example, N is 3, the identifier of each reference signal is represented by 2 bits, the number of bits included in the first information is 2N, that is, 6 bits, and when the first combination is different combinations, the first information may be as shown in table 9 in conjunction with table 8.

TABLE 9

In this implementation, the second device may determine, according to the first information, X time-frequency resources, may determine a first combination according to the X time-frequency resources, and further may determine, according to a third main lobe direction determined by the first combination, the third main lobe direction as a beam direction used for transmitting a signal to the first device.

For example, in conjunction with table 9, when the first combination is combination 1, the first information is 010000. When the second device receives 010000 as the first information, time-frequency resource 1 may be determined according to the first information. The second device may determine, according to the time-frequency resource 1, that the corresponding combination is combination 1, and the second device may determine that the third main lobe direction corresponding to combination 1 is main lobe direction 4, thereby determining that the main lobe direction with the best signal quality is main lobe direction 4 when the first device receives the reference signal. Other cases will not be described in detail.

In a fourth possible implementation manner, the first information is an identifier of the first combination.

In this implementation, the first information directly indicates the first combination. For this purpose, the second device may indicate the identifier of each combination to the first device in advance, and when the first device determines the first combination, the identifier of the first combination may be fed back directly.

For example, the identification of the first combination indicated by the second device may be as shown in table 10.

TABLE 10

First combination	Identification
		Combination 1	100
Combination 2	010
		Combination 3	001
Combination 4	110
		Combination 5	101
Combination 6	011
		Combination 7	111

When the first device determines to combine the 5-bit first combination, the fed back first information may be 101, and details of other cases are omitted.

It should be noted that other implementation manners may also exist for the first information, for example, the first device may determine X multi-peak beams corresponding to X signal measurement information included in the first combination, where the first information is an identifier of the X multi-peak beams, and specifically refer to the description in the second or third possible implementation manners, and details are not repeated here.

For example, in another possible implementation manner, in step 204, the first device may also send the N pieces of signal measurement information to the second device instead of sending the first information to the second device. In this implementation, the second device may determine the third main lobe direction according to the N pieces of signal measurement information, so that the third main lobe direction is used as a beam direction used when transmitting a signal to the first device. How the second device determines the third main lobe direction specifically may refer to the foregoing description, and details are not repeated here.

In the flow shown in fig. 2, how the first device feeds back the first information is described. In this embodiment, the first device may also directly send the measured N pieces of signal measurement information to the second device without sending the first information, which may specifically refer to fig. 5.

Step 501: the second device sends N reference signals to the first device, wherein N is an integer larger than 0.

Step 502: the first device receives N reference signals from the second device.

Step 503: and the first equipment measures the N reference signals to obtain N signal measurement information.

For the specific contents of step 501 to step 503, reference may be made to the descriptions in step 201 to step 203, which are not described herein again.

Step 504: the first device sends the N signal measurement information to the second device.

Step 505: the second device receives N signal measurement information from the first device.

When the second device receives the N pieces of signal measurement information, it may determine the first combination or determine the third main lobe direction according to the N pieces of signal measurement information, and how to determine the first combination or the third main lobe direction may refer to the foregoing description, which is not described herein again.

In this implementation, after the second device determines the third main lobe direction, the third main lobe direction may be taken as a beam direction used for transmitting signals to the first device.

The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic and are intended to fall within the scope of the present application.

It is to be understood that, in the above embodiments of the method, the method and the operation implemented by the first device may also be implemented by a component (e.g., a chip or a circuit) applicable to the first device, and the method and the operation implemented by the second device may also be implemented by a component (e.g., a chip or a circuit) applicable to the second device.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is introduced from the perspective of interaction between the devices. In order to implement the functions in the method provided by the embodiments of the present application, the first device and the second device may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

The division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional modules in the embodiments of the present application may be integrated into one processor, may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

Similar to the above concept, as shown in fig. 6, an apparatus 600 is further provided in the embodiment of the present application to implement the functions of the first device or the second device in the foregoing method. The device may be a software module or a system-on-a-chip, for example. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. The apparatus 600 may include: a processing unit 601 and a communication unit 602.

In this embodiment of the present application, the communication unit may also be referred to as a transceiver unit, and may include a transmitting unit and/or a receiving unit, which are respectively configured to perform the steps of transmitting and receiving by the first device or the second device in the foregoing method embodiments.

Hereinafter, the communication device according to the embodiment of the present application will be described in detail with reference to fig. 6 to 7. It should be understood that the description of the apparatus embodiment corresponds to the description of the method embodiment, and therefore, for the sake of brevity, details which are not described in detail above may be referred to the method embodiment.

In one possible design, the apparatus 600 may implement the steps or processes performed by the first device or the second device corresponding to the above method embodiments, which are described below respectively.

Illustratively, when the apparatus 600 implements the function of the first device in the flow shown in fig. 2:

a communication unit 602, configured to receive N reference signals from a second device, where N is an integer greater than 0;

a processing unit 601, configured to measure the N reference signals, and obtain N pieces of signal measurement information; determining a first combination from the N signal measurement information; the first combination is one of H combinations composed of the N pieces of signal measurement information, and any one of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is less than or equal to 2 ^N An integer of (d);

the communication unit 602 is configured to send first information to the second device; the first information is used to indicate the first combination.

In one possible design, the processing unit 601 is specifically configured to: and determining the combination with the largest signal characteristic in H combinations formed by the N pieces of signal measurement information as the first combination.

when the second combination of the H combinations and the first combination do not have the signal measurement information corresponding to the same reference signal, the difference value between the sum of all the signal measurement information in the first combination and the sum of all the signal measurement information in the second combination is larger than a second threshold value; when a second combination of the H combinations includes signal measurement information corresponding to a portion of the reference signals in the first combination, a difference between a sum of all signal measurement information in the first combination and a sum of all signal measurement information in the second combination is greater than a third threshold.

In one possible design, each of the N reference signals is transmitted via one multi-peak beam; the one multi-modal beam is a beam comprising at least two main lobe directions, and the N multi-modal beams corresponding to the N reference signals comprise M main lobe directions; m is an integer greater than N.

In one possible design, the first information is an identification of the third main lobe direction; when the first combination only corresponds to one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not included in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-modal beams, the third main lobe direction is a main lobe direction that the first combination corresponds to and transmits both of the at least two multi-modal beams.

In one possible design, the communication unit 602 is further configured to:

receiving data from the second device through the beam of the third main lobe direction.

It should be understood that the above is only an example, and when the apparatus 600 implements the function of the first device in the flow shown in fig. 2, the specific processes of the processing unit 601 and the communication unit 602 for executing the corresponding steps described above have been described in detail in the above method embodiment, and for brevity, the detailed processes of the steps are not described again here.

Exemplarily, in a possible implementation manner, when the apparatus 600 implements the function of the second device in the flow illustrated in fig. 2:

a communication unit 602, configured to send N reference signals to a first device, where N is an integer greater than 0; receiving first information from the first device; the first information is used for indicating a first combination, the first combination is one of H combinations formed by N pieces of signal measurement information, and any combination of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is less than or equal to 2 ^N An integer of (a); the N pieces of signal measurement information are obtained by measuring according to the N reference signals;

a processing unit 601, configured to determine the first combination according to the first information.

In a possible implementation, when the first combination is the combination with the largest signal characteristic, the first combination is the combination of the H combinations that satisfies one or more of the following conditions:

when a second combination of the H combinations includes signal measurement information corresponding to all reference signals in the first combination, the sum of all signal measurement information in the first combination is smaller than the sum of all signal measurement information in the second combination, and the difference between the sum of all signal measurement information in the second combination and the sum of all signal measurement information in the first combination is smaller than a first threshold; the second combination is any one of the H combinations except the first combination;

when the second combination of the H combinations and the first combination do not have the signal measurement information corresponding to the same reference signal, the difference value of the sum of all the signal measurement information in the first combination and the sum of all the signal measurement information in the second combination is larger than a second threshold value;

when a second combination of the H combinations includes signal measurement information corresponding to a portion of the reference signals in the first combination, a difference between a sum of all signal measurement information in the first combination and a sum of all signal measurement information in the second combination is greater than a third threshold.

In a possible implementation manner, the first information is an identifier of the third main lobe direction; when the first combination corresponds to only one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not the main lobe direction in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-modal beams, the third main lobe direction is a main lobe direction that the first combination corresponds to and transmits both of the at least two multi-modal beams.

In a possible implementation manner, each of the N reference signals maps one time-frequency resource; the first combination comprises X pieces of signal measurement information, wherein X is an integer greater than 0; the first information is the identification of X time frequency resources, and the X signal measurement information corresponding to X reference signals borne by the X time frequency resources.

It should be understood that the above is only an example, and when the apparatus 600 implements the function of the second device in the flow shown in fig. 2, the specific processes of the processing unit 601 and the communication unit 602 for executing the above corresponding steps have been described in detail in the foregoing method embodiment, and for brevity, the specific processes of each step are not described again here.

As shown in fig. 7, which is a device 700 provided in the embodiment of the present application, the device shown in fig. 7 may be implemented as a hardware circuit of the device shown in fig. 6. The communication apparatus may be adapted to the flowcharts shown in fig. 2 to 5, and perform the functions of the first device or the second device in the above method embodiments. For convenience of explanation, fig. 7 shows only the main components of the communication apparatus.

The apparatus 700 shown in fig. 7 includes at least one processor 720 for implementing any one of the methods of fig. 2-5 provided by the embodiments of the present application.

The apparatus 700 may also include at least one memory 730 for storing program instructions and/or data. Memory 730 is coupled to processor 720. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. Processor 720 may cooperate with memory 730. Processor 720 may execute program instructions stored in memory 730. At least one of the at least one memory may be included in the processor.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Apparatus 700 may also include a communication interface 710 for communicating with other devices over a transmission medium, such that the apparatus used in apparatus 700 may communicate with other devices. In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface. In the embodiment of the present application, when the communication interface is a transceiver, the transceiver may include an independent receiver and an independent transmitter; a transceiver that integrates transceiving functions, or an interface circuit may be used.

Illustratively, when the apparatus 700 implements the functionality of the first device in the flow shown in fig. 2:

a communication interface 710 for receiving N reference signals from a second device, N being an integer greater than 0;

a processor 720, configured to measure the N reference signals, and obtain N pieces of signal measurement information; determining a first combination from the N signal measurement information; the first combination is one of H combinations of the N signal measurement information, any one of the H combinations including at least one of the N signal measurement information; h is an integer less than or equal to 2N;

the communication interface 710 is configured to send first information to the second device; the first information is used to indicate the first combination.

In one possible design, the processor 720 is specifically configured to: and determining the combination with the largest signal characteristic in H combinations formed by the N pieces of signal measurement information as the first combination.

when a second combination of the H combinations includes signal measurement information corresponding to all reference signals in the first combination, a sum of all signal measurement information in the first combination is smaller than a sum of all signal measurement information in the second combination, and a difference between the sum of all signal measurement information in the second combination and the sum of all signal measurement information in the first combination is smaller than a first threshold; the second combination is any one combination of the H combinations except the first combination;

when the second combination of the H combinations and the first combination do not have the signal measurement information corresponding to the same reference signal, the difference value of the sum of all the signal measurement information in the first combination and the sum of all the signal measurement information in the second combination is larger than a second threshold value; when a second combination of the H combinations includes signal measurement information corresponding to a part of the reference signals in the first combination, a difference between a sum of all signal measurement information in the first combination and a sum of all signal measurement information in the second combination is greater than a third threshold.

In one possible design, the communication interface 710 is further configured to:

receiving data from the second device through a beam of the third main lobe direction.

Illustratively, when the apparatus 700 implements the function of the second device in the flow shown in fig. 2:

a communication interface 710, configured to send N reference signals to a first device, where N is an integer greater than 0; receiving first information from the first device; the first information is used for indicating a first combination, the first combination is one of H combinations formed by N pieces of signal measurement information, and any combination of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is an integer less than or equal to 2N; the N pieces of signal measurement information are obtained by measuring according to the N reference signals;

a processor 720 configured to determine the first combination according to the first information.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method of any one of the embodiments shown in figures 2 to 5.

According to the method provided by the embodiment of the present application, a computer-readable medium is further provided, and the computer-readable medium stores program codes, and when the program codes are executed on a computer, the computer is caused to execute the method of any one of the embodiments shown in fig. 2 to 5.

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the aforementioned first device and second device.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A signal measurement method, comprising:

the first device receives N reference signals from the second device, wherein N is an integer greater than 0; one of the N reference signals is associated with a plurality of M beam directions, M being an integer greater than N;

the first equipment measures the N reference signals to obtain N signal measurement information;

the first device determines a first combination according to the N pieces of signal measurement information; the first combination is one of H combinations composed of the N pieces of signal measurement information, and any one of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is less than or equal to 2 ^N An integer of (d);

the first equipment sends first information to the second equipment; the first information is used to indicate the first combination.

2. The method of claim 1, wherein the first device determines a first combination from the N signal measurement information, comprising:

and the first equipment determines the combination with the largest signal characteristic as the first combination from H combinations formed by the N pieces of signal measurement information.

3. The method of claim 2, wherein when the first combination is the combination with the largest signal characteristic, the first combination is the combination of the H combinations that satisfies one or more of the following conditions:

4. The method according to any of claims 1 to 3, wherein each of the N reference signals is transmitted via a multi-peak beam; the one multi-modal beam is a beam comprising at least two main lobe directions, and the N multi-modal beams corresponding to the N reference signals comprise M main lobe directions; m is an integer greater than N.

5. The method of claim 4, wherein for any two of the M main lobe directions: a first mainlobe direction and a second mainlobe direction, there being at least one different multimodal beam among the N multimodal beams, P multimodal beams including the first mainlobe direction and Q multimodal beams including the second mainlobe direction, P, Q being an integer greater than 0.

6. The method of claim 4, wherein the first information is an identification of a third main lobe direction; when the first combination only corresponds to one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not included in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-modal beams, the third main lobe direction is a main lobe direction that the first combination corresponds to and transmits both of the at least two multi-modal beams.

7. The method of claim 6, further comprising:

the first device receives data from the second device via the beam in the third main lobe direction.

8. The method according to any of claims 1 to 3, wherein each of the N reference signals maps one time-frequency resource; the first combination comprises X pieces of signal measurement information, wherein X is an integer greater than 0;

the first information is the identification of X time frequency resources, and the X signal measurement information corresponding to X reference signals borne by the X time frequency resources.

9. A method according to any one of claims 1 to 3, wherein the first combination comprises X signal measurement information, X being an integer greater than 0;

the first information is the identifier of the X reference signals corresponding to the X signal measurement information.

10. A signal measurement method, comprising:

the second equipment sends N reference signals to the first equipment, wherein N is an integer greater than 0; one of the N reference signals is associated with a plurality of M beam directions, M being an integer greater than N;

the second device receives first information from the first device; the first information is used for indicating a first combination, wherein the first combination is one of H combinations formed by N pieces of signal measurement information, and any combination of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is less than or equal to 2 ^N An integer of (d); the N pieces of signal measurement information are obtained by measuring according to the N reference signals;

the second device determines the first combination according to the first information.

11. The method of claim 10 wherein the first combination is the combination of the H combinations where the signal characteristic is largest.

12. The method of claim 11, wherein when the first combination is the combination with the largest signal characteristic, the first combination is the combination of the H combinations that satisfies one or more of the following conditions:

13. The method according to any of claims 10 to 12, wherein each of the N reference signals is transmitted via a multi-peak beam; the one multi-modal beam is a beam comprising at least two main lobe directions, and the N multi-modal beams corresponding to the N reference signals comprise M main lobe directions; m is an integer greater than N.

14. The method of claim 13, wherein for any two of the M main lobe directions: a first mainlobe direction and a second mainlobe direction, there being at least one different multimodal beam among the N multimodal beams, P multimodal beams including the first mainlobe direction and Q multimodal beams including the second mainlobe direction, P, Q being an integer greater than 0.

15. The method of claim 13, wherein the first information is an identification of a third main lobe direction; when the first combination corresponds to only one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not the main lobe direction in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-peak beams, the third main lobe direction is a main lobe direction included by the first combination corresponding to the at least two multi-peak beams.

16. The method according to any of claims 10 to 12, wherein each of the N reference signals maps one time-frequency resource; the first combination comprises X pieces of signal measurement information, wherein X is an integer greater than 0;

17. The method according to any one of claims 10 to 12, wherein the first combination comprises X signal measurement information, wherein X is an integer greater than 0;

18. A communications apparatus, comprising:

a communication unit for receiving N reference signals from a second device, N being an integer greater than 0; one of the N reference signals is associated with a plurality of M beam directions, M being an integer greater than N;

the processing unit is used for measuring the N reference signals to obtain N signal measurement information;

the communication unit is used for determining a first combination according to the N pieces of signal measurement information; the first combination is one of H combinations composed of the N pieces of signal measurement information, and any one of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is an integer less than or equal to 2N; sending first information to the second device; the first information is used to indicate the first combination.

19. The apparatus according to claim 18, wherein the processing unit is specifically configured to:

and determining the combination with the largest signal characteristic in H combinations formed by the N pieces of signal measurement information as the first combination.

20. The apparatus of claim 19, wherein when the first combination is a combination with the largest signal characteristic, the first combination is a combination of the H combinations that satisfies one or more of the following conditions:

21. The apparatus of any of claims 18 to 20, wherein each of the N reference signals is transmitted via a multi-peak beam; the one multi-modal beam is a beam comprising at least two main lobe directions, and the N multi-modal beams corresponding to the N reference signals comprise M main lobe directions; m is an integer greater than N.

22. The apparatus of claim 21, wherein for any two of the M main lobe directions: a first mainlobe direction and a second mainlobe direction, there being at least one different multimodal beam among the N multimodal beams, P multimodal beams including the first mainlobe direction and Q multimodal beams including the second mainlobe direction, P, Q being an integer greater than 0.

23. The apparatus of claim 21, wherein the first information is an identification of a third main lobe direction; when the first combination corresponds to only one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not the main lobe direction in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-modal beams, the third main lobe direction is a main lobe direction that the first combination corresponds to and transmits both of the at least two multi-modal beams.

24. The apparatus of claim 23, wherein the communication unit is further configured to:

25. The apparatus according to any of claims 18 to 20, wherein each of the N reference signals maps one time-frequency resource; the first combination comprises X pieces of signal measurement information, wherein X is an integer greater than 0;

26. The apparatus according to any one of claims 18 to 20, wherein the first combination comprises X signal measurement information, X being an integer greater than 0;

27. A signal measurement device, comprising:

a communication unit, configured to send N reference signals to a first device, where N is an integer greater than 0; one of the N reference signals is associated with a plurality of M beam directions, M being an integer greater than N; receiving first information from the first device; the first information is used for indicating a first combination, the first combination is one of H combinations formed by N pieces of signal measurement information, and any combination of the H combinations comprises at least one piece of signal measurement information in the N pieces of signal measurement information; h is an integer less than or equal to 2N; the N pieces of signal measurement information are obtained by measuring according to the N pieces of reference signals;

a processing unit for determining the first combination according to the first information.

28. The apparatus of claim 27 wherein the first combination is the combination of the H combinations having the largest signal characteristic.

29. The apparatus of claim 28, wherein when the first combination is a combination with the largest signal characteristic, the first combination is a combination of the H combinations that satisfies one or more of the following conditions:

30. The apparatus of any of claims 27 to 29, wherein each of the N reference signals is transmitted via a multi-peak beam; the one multi-modal beam is a beam comprising at least two main lobe directions, and the N multi-modal beams corresponding to the N reference signals comprise M main lobe directions; m is an integer greater than N.

31. The apparatus of claim 30, wherein for any two of the M main lobe directions: a first mainlobe direction and a second mainlobe direction, there being at least one different multimodal beam among the N multimodal beams, P multimodal beams including the first mainlobe direction and Q multimodal beams including the second mainlobe direction, P, Q being an integer greater than 0.

32. The apparatus of claim 30, wherein the first information is an identification of a third main lobe direction; when the first combination corresponds to only one multi-peak beam, the third main lobe direction is only the main lobe direction in all the multi-peak beams corresponding to the first combination, and is not the main lobe direction in all the multi-peak beams corresponding to the signal measurement information included in any combination except the first combination in the H combinations; when the first combination corresponds to at least two multi-modal beams, the third main lobe direction is a main lobe direction that the first combination corresponds to and transmits both of the at least two multi-modal beams.

33. The apparatus according to any of claims 27 to 29, wherein each of the N reference signals maps one time-frequency resource; the first combination comprises X pieces of signal measurement information, wherein X is an integer greater than 0;

34. The apparatus according to any one of claims 27 to 29, wherein the first combination comprises X signal measurement information, X being an integer greater than 0;

35. A communication device comprising a processor, a transceiver, and a memory;

the processor for executing a computer program or instructions stored in the memory, which when executed, causes the communication device to implement the method of any one of claims 1 to 17.

36. A communications apparatus, comprising a processor coupled with at least one memory:

the processor for executing a computer program or instructions stored in the at least one memory, the computer program or instructions, when executed, performing the method of any of claims 1 to 17.

37. A readable storage medium, comprising a program or instructions which, when executed, perform the method of any of claims 1 to 17.

38. A chip, characterized in that it is connected to a memory for reading and executing a computer program or instructions stored in said memory, which computer program or instructions, when executed, perform the method according to any one of claims 1 to 17.