Measurement reporting method and related device

Abstract

Provided are a measurement reporting method and a related device, the method comprising: a first communication device receiving a plurality of reference signals from a second communication device, performing measurement based on the plurality of reference signals to obtain a plurality of groups of channel information, and further sending the plurality of groups of channel information to the second communication device, the multiple groups of channel information comprise first-class channel information and / or second-class channel information, the first-class channel information is indicated to be reported by the second communication device or is determined to be reported by the first communication device according to a first preset rule, and the second-class channel information is determined to be reported by the first communication device according to a second preset rule. Compared with reporting a group of channel information, the second communication device can acquire more comprehensive channel information, thereby facilitating resource scheduling and improving the performance of the whole network.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a measurement reporting method and related devices. Background Art

[0002] In a wireless communication system, a network device may send configuration information to a terminal device via radio resource control (RRC) signaling for configuring reference signal resources and related parameters for reporting measurement results. Accordingly, the terminal device measures a reference signal (RS) based on the above configuration information and reports channel status information (CSI).

[0003] Beamforming technology is used to limit the energy of wireless signals to a certain beam direction, thereby increasing the efficiency of signal reception. Beamforming technologies include, for example, digital beamforming (DBF), analog beamforming (ABF), and hybrid beamforming (HBF). In a communication system using ABF or HBF, network equipment can select the directions of multiple beams and send reference signals through different beams for terminal equipment to measure, thereby obtaining a beam with better quality.

[0004] When using analog beamforming or hybrid beamforming, network devices can only schedule beams in time division. At present, terminal devices can report the channel information of their corresponding target beams, where the target beam can be a beam with a signal quality higher than a set threshold among multiple beams, for example, it can be a beam with the strongest signal quality. For example, terminal device 1 only reports the channel information of beam 1, and terminal device 2 only reports the channel information of beam 2. In this way, when the network device schedules beam 2, since terminal device 1 does not report the channel information of beam 2, the network device cannot obtain the channel status of beam 2 between terminal device 1 and the network device. Therefore, the network device cannot schedule resources for terminal device 1 and terminal device 2 at the same time, and the performance of the entire network is poor. Summary of the invention

[0005] The present application provides a measurement reporting method and related devices, in order to provide more comprehensive channel information, facilitate network equipment to schedule resources, and thus improve the performance of the entire network.

[0006] In the first aspect, the present application provides a measurement reporting method, which can be executed by a first communication device. The first communication device can be a terminal device, or it can also be a component configured in the terminal device (such as a chip, chip system, etc.), or it can also be a logic module or software that can realize all or part of the functions of the terminal device. The present application does not limit this.

[0007] Exemplarily, the method includes: receiving multiple reference signals from a second communication device; performing measurements based on the multiple reference signals to obtain multiple groups of channel information; sending the multiple groups of channel information to the second communication device, the multiple groups of channel information including first-category channel information and / or second-category channel information, the first-category channel information is instructed to be reported by the second communication device or determined to be reported by the first communication device according to a first preset rule, and the second-category channel information is determined to be reported according to a second preset rule.

[0008] The channel information may also be referred to as a channel response, and this application does not specifically limit its name. For example, CSI is a type of channel information, which is information that can reflect channel characteristics and channel quality.

[0009] The above-mentioned multiple groups of channel information include the first category of channel information and / or the second category of channel information. One possible design is that the above-mentioned multiple groups of channel information may be the first category of channel information. Another possible design is that the above-mentioned multiple groups of channel information may be the second category of channel information. Another possible design is that part of the channel information of the above-mentioned multiple groups of channel information is the first category of channel information, and the other part of the channel information is the second category of channel information.

[0010] In the present application, one reference signal may correspond to a set of channel information. For example, the first communication device may perform measurement based on one reference signal to obtain a set of channel information. In addition, two or more reference signals may also correspond to a set of channel information. For example, the first communication device may perform measurement based on two reference signals to obtain a set of channel information. The present application does not limit this.

[0011] In the above technical solution, after receiving multiple reference signals, the first communication device can perform measurements based on the multiple reference signals to obtain and report multiple groups of channel information to the second communication device. Compared with reporting one group of channel information, the second communication device can obtain more comprehensive channel information, which is convenient for resource scheduling and improves the performance of the entire network. In addition, the multiple groups of channel information reported by the first communication device may include the first type of channel information, which can be reported by the second communication device. That is, the second communication device can flexibly indicate which channel information it wants the first communication device to report according to actual needs, which is convenient for the second communication device to perform resource scheduling and improve the performance of the entire network.

[0012] On the second aspect, the present application provides a measurement reporting method, which can be executed by a second communication device. The second communication device can be a network device, or it can also be a component configured in the network device (such as a chip, chip system, etc.), or it can also be a logic module or software that can realize all or part of the functions of the network device. The present application does not limit this.

[0013] Exemplarily, the method includes: sending multiple reference signals to a first communication device; receiving multiple groups of channel information from the first communication device, the multiple groups of channel information are obtained by measuring based on the above-mentioned multiple reference signals, the multiple groups of channel information include first type of channel information and / or second type of channel information, the first type of channel information is instructed to be reported by the second communication device or determined to be reported by the first communication device according to a first preset rule, and the second type of channel information is determined to be reported according to a second preset rule.

[0014] The channel information may also be referred to as a channel response, and this application does not specifically limit its name. For example, CSI is a type of channel information, which is information that can reflect channel characteristics and channel quality.

[0015] The above-mentioned multiple groups of channel information include the first category of channel information and / or the second category of channel information. One possible design is that the above-mentioned multiple groups of channel information can be the first category of channel information. Another possible design is that the above-mentioned multiple groups of channel information can be the second category of channel information. Another possible design is that part of the channel information of the above-mentioned multiple groups of channel information is the first category of channel information, and the other part of the channel information is the second category of channel information. In the above-mentioned technical scheme, the second communication device can obtain multiple groups of channel information. Compared with one group of channel information, the channel information that the second communication device can obtain is more comprehensive, which facilitates resource scheduling and improves the performance of the entire network. In addition, the above-mentioned multiple groups of channel information include the first category of channel information. This type of channel information can be reported by the second communication device. That is to say, the second communication device can flexibly indicate which channel information it wants the first communication device to report according to actual needs, which facilitates the second communication device to perform resource scheduling and improve the performance of the entire network.

[0016] In the present application, one possible scenario is that the first communication device is a terminal device and the second communication device is a network device, that is, the method provided in the present application is applicable to the measurement and reporting of the downlink reference signal; another possible scenario is that the first communication device is a network device and the second communication device is a terminal device, that is, the method provided in the present application can also be applicable to the measurement and reporting of the uplink reference signal, and the present application does not limit this.

[0017] In combination with the first aspect and the second aspect, in some possible implementations, the first type of channel information is channel information corresponding to one or more group indexes indicated by the second communication device, and each group of channel information in the above multiple groups of channel information corresponds to a group index.

[0018] In combination with the first aspect and the second aspect, in some possible implementations, the first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and an identifier of the target reference signal resource and / or an identifier of a resource set to which the target reference signal resource belongs is indicated by a second communication device.

[0019] The reference signal carried on the target reference signal resource is one or more reference signals (or part of the reference signal) among the above-mentioned multiple reference signals. The second communication device may indicate the identifier of the target reference signal resource and / or the identifier of the resource set to which the target reference signal resource belongs to the first communication device, so that the first communication device reports the channel information obtained by measuring the reference signal carried on the target reference signal resource.

[0020] One possible situation is that the resources corresponding to the above-mentioned multiple reference signals belong to the same resource set, and the second communication device can indicate the identifier of the target reference signal resource to the first communication device.

[0021] Another possible situation is that the resources corresponding to the above-mentioned multiple reference signals are divided into at least two resource sets, and the second communication device can indicate the identifier of the target reference signal resource to the first communication device; it can also indicate the identifier of the target reference signal resource and the identifier of the resource set to which the target reference signal resource belongs to the first communication device.

[0022] In combination with the first aspect and the second aspect, in some possible implementations, the first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and the target reference signal resource is determined according to a first preset rule, and the first preset rule includes any one of the following: the target reference signal resource is the mth to nth reference signal resources in at least one reference signal resource set, m and n are integers, and n≥m; the target reference signal resource is a reference signal resource corresponding to a resource for reporting CSI (or CSI reporting resource); the target reference signal resource is a resource corresponding to a reference signal with the highest priority among multiple reference signals, and the priority of each reference signal in the multiple reference signals is indicated by the second communication device; or, the target reference signal resource is a resource corresponding to a reference signal with the highest reference signal received power (RSRP) among multiple reference signals.

[0023] Among them, m and n can be indicated by the second communication device or can be predefined, and this application does not limit this. In addition, each reference signal resource set in the at least one reference signal resource set includes resources corresponding to one or more reference signals in the multiple reference signals. In other words, the resources corresponding to the one or more reference signals can be divided into one or more resource sets, and the target reference signal resource can be the mth to nth reference signal resources in at least one resource set in the one or more resource sets.

[0024] One possible situation is that m=n, and the target reference signal resource is the mth to nth reference signal resource in at least one reference signal resource set, which can be understood as: the target reference signal resource is the mth (or nth) reference signal resource in each reference signal resource set in the at least one reference signal resource set. For example, the target reference signal resource is the first reference signal resource in each reference signal resource in the at least one reference signal resource set. For another example, the target reference signal resource is the last reference signal resource in each reference signal resource in the at least one reference signal resource set.

[0025] Another possible situation is that n>m, and the target reference signal resource is the mth to nth reference signal resource in at least one reference signal resource set, which can be understood as: the target reference resource includes the (n-m+1) reference signal resources in each reference signal resource set in the at least one reference signal resource set. For example, the resources corresponding to the above multiple reference signals are divided into two reference signal resource sets, each reference signal resource set includes 5 reference signal resources, and the target reference signal resource can be the 1st to 3rd reference signal resources in each reference signal resource set in the above two reference signal resource sets.

[0026] In addition, it can be understood that the target reference signal resource is a resource corresponding to the reference signal with the highest priority among multiple reference signals, which is only an example and should not constitute any limitation to the present application. For example, in practical applications, the target reference signal resource may be a resource corresponding to a reference signal with a priority greater than or equal to a priority threshold among multiple reference signals. Similarly, the target reference signal resource is a resource corresponding to the reference signal with the highest RSRP among multiple reference signals, which is also only an example. For example, the target reference signal resource may be a resource corresponding to a reference signal with an RSRP greater than or equal to an RSRP threshold among multiple reference signals.

[0027] In combination with the first aspect and the second aspect, in some possible implementations, the second type of channel information is channel information obtained by measuring a target reference signal determined according to a second preset rule, and the second preset rule includes one or more of the following: the target reference signal is a reference signal with the highest RSRP among multiple reference signals; the target reference signal is a reference signal among the multiple reference signals whose RSRP difference with the last reported RSRP is less than or equal to a first threshold; the target reference signal is a reference signal among the multiple reference signals other than the reference signal corresponding to the first type of channel information; or, the target reference signal is a reference signal whose correlation with the reference signal corresponding to the first type of channel information is greater than or equal to a second threshold.

[0028] The target reference signal being the reference signal with the highest RSRP among multiple reference signals is only an example and should not constitute any limitation to the present application. For example, in practical applications, the target reference signal can be a reference signal among multiple reference signals whose RSRP is greater than or equal to the RSRP threshold.

[0029] The reference signal corresponding to the first type of channel information may be understood as at least one reference signal used to measure and obtain the first type of channel information. That is, the channel information obtained by measuring the at least one reference signal is recorded as the first type of channel information.

[0030] The target reference signal is a reference signal other than the reference signal corresponding to the first type of channel information in multiple reference signals. It can be understood that the target reference signal corresponding to the second type of channel information is any one or more reference signals other than the reference signal corresponding to the first type of channel information in multiple reference signals. In other words, if the reference signal corresponding to the second type of channel information is the same as the reference signal corresponding to the first type of channel signal, the channel information corresponding to the same reference signal is only reported once. For example, the reference signals corresponding to the first type of channel information include reference signal 1, reference signal 2, reference signal 3 and reference signal 4. If the reference signals corresponding to the second type of channel information determined according to the second preset rule are reference signal 1, reference signal 2 and reference signal 5, then only the channel information corresponding to reference signal 5 is reported in the second type of channel information.

[0031] The first communication device can report the channel information measured by the target reference signal determined according to the second preset rule. In this way, the first communication device can flexibly select its more matching beam to improve the quality of the communication link, thereby maximizing the service rate of the first communication device.

[0032] In the present application, the first type of channel information may need to be reported, and the second type of channel information may be optionally reported, but this shall not constitute any limitation to the present application. For example, in one implementation, the second type of channel information may need to be reported, and the first type of channel information may be optionally reported. In other words, the multiple groups of channel information reported by the first communication device need to include the second type of channel information, and the second type of channel information is determined according to the second preset rule. Optionally, the multiple groups of channel information may also include the first type of channel information, and the first type of channel information is reported by the second communication device or determined by the first communication device according to the first preset rule.

[0033] In combination with the first aspect and the second aspect, in some possible implementations, each set of channel information includes a precoding matrix indicator (PMI), a channel quality indicator (CQI), a rank indicator (RI) and a reference signal resource indicator (CSI-RS resource indicator, CRI).

[0034] In a third aspect, the present application provides a communication device, including a module or unit for implementing the method in the first aspect and any possible implementation of the first aspect, or, including a module for implementing the method in the second aspect and any possible implementation of the second aspect. Each module or unit can implement the corresponding function by executing a computer program.

[0035] Exemplarily, the communication device in the third aspect is a terminal device, or a component configured in a terminal device, such as a chip, a chip system, a processor, etc.; or, the communication device in the third aspect is a network device, or a component configured in a network device, such as a chip, a chip system, a processor, etc.

[0036] In a fourth aspect, the present application provides a communication device, comprising a processor, wherein the processor is used to execute the measurement reporting method described in the first aspect and any possible implementation of the first aspect, or to execute the measurement reporting method described in the second aspect and any possible implementation of the second aspect.

[0037] Optionally, the device may further include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the methods described in the above aspects may be implemented.

[0038] Optionally, the device may further include a communication interface, and the communication interface is used for the device to communicate with other communication devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin or other types of communication interfaces.

[0039] Exemplarily, the communication device provided in the fourth aspect is a chip or a chip system.

[0040] In a fifth aspect, the present application provides a communication device, including a processor and a communication interface, wherein the communication interface is used to receive signals from other communication devices outside the communication device and transmit them to the processor, or send signals from the processor to other communication devices outside the communication device, and the processor implements the measurement reporting method described in the first aspect and any possible implementation of the first aspect through a logic circuit or executes code instructions, or implements the measurement reporting method described in the second aspect and any possible implementation of the second aspect. Exemplarily, the communication interface can be a transceiver, circuit, bus, module, pin, or other type of communication interface.

[0041] Optionally, the device further includes a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the measurement reporting method described in the first aspect and any possible implementation of the first aspect can be implemented, or the measurement reporting method described in the second aspect and any possible implementation of the second aspect can be implemented.

[0042] In a sixth aspect, the present application provides a communication device, comprising a processor and a memory, wherein the memory is used to store instructions and data, and when the processor executes the instructions stored in the memory, it can implement the measurement reporting method described in the first aspect and any possible implementation of the first aspect, or implement the measurement reporting method described in the second aspect and any possible implementation of the second aspect.

[0043] Optionally, the device further comprises a communication interface, and the communication interface is used for the device to communicate with other communication devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, pin or other types of communication interfaces.

[0044] Exemplarily, the communication device in the fifth aspect and the sixth aspect is a terminal device or a network device.

[0045] In the seventh aspect, the present application provides a chip system, which includes at least one processor for supporting the implementation of the functions involved in the above-mentioned first aspect and any possible implementation method of the first aspect, or for supporting the implementation of the functions involved in the above-mentioned second aspect and any possible implementation method of the second aspect, for example, receiving or processing the data and / or information involved in the above-mentioned method.

[0046] In one possible design, the chip system also includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0047] The chip system may be composed of the chip, or may include the chip and other discrete devices.

[0048] In an eighth aspect, the present application provides a computer-readable storage medium, comprising a computer program, which, when executed on a computer, enables the computer to implement the method in the first or second aspect and any possible implementation manner of the first or second aspect.

[0049] In the ninth aspect, the present application provides a computer program product, comprising: a computer program (also referred to as code, or instruction), which, when executed, enables a computer to execute the method in the first or second aspect and any possible implementation of the first or second aspect.

[0050] In the tenth aspect, a communication system is provided, comprising the aforementioned first communication device and second communication device, wherein the first communication device can be used to implement the method in the first aspect and any possible implementation manner of the first aspect, and the second communication device can be used to implement the method in the second aspect and any possible implementation manner of the second aspect.

[0051] The third to tenth aspects of the present application correspond to the technical solutions of the first and second aspects of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the architecture of a communication system applicable to the measurement reporting method provided in this application;

[0053] Figure 2 It is a schematic diagram of an access network device applicable to the measurement reporting method provided in this application;

[0054] Figure 3 is a schematic diagram of hybrid beamforming or digital beamforming provided in an embodiment of the present application;

[0055] Figure 4 It is a schematic diagram of a network device sending a reference signal;

[0056] Figure 5 is a schematic flow chart of a measurement reporting method provided in an embodiment of the present application;

[0057] Figure 6 is a schematic diagram of different numbers of reference signal resource sets configured according to an embodiment of the present application;

[0058] Figure 7 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0059] Figure 8 is another schematic block diagram of a communication device provided in an embodiment of the present application;

[0060] Fig. 9 This is another structural diagram of the communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] To facilitate understanding of the embodiments of the present application, the following points are first explained:

[0062] First, in this application, indication includes explicit indication (also called direct indication) and implicit indication (also called indirect indication). Among them, explicit indication information A means including the information A; implicit indication information A means indicating information A through the correspondence between information A and information B and directly indicating information B. The correspondence between information A and information B can be predefined, pre-stored, pre-burned, or pre-configured; or, it can also mean indicating information A through information B and preset rules.

[0063] Second, in this application, information C is used to determine information D, which includes information D being determined based only on information C, and information D being determined based on information C and other information. In addition, information C is used to determine information D, and it can also be indirectly determined, for example, information D is determined based on information E, and information E is determined based on information C.

[0064] Third, in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship, but it does not exclude the situation where the previous and next associated objects are in an "and" relationship. The specific meaning can be understood in combination with the context. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c; a and b; a and c; b and c; or a and b and c. Where a, b, c can be single or multiple.

[0065] Fourth, in this application, the use of prefixes such as "first" and "second" is only to facilitate the distinction and description of different things belonging to the same name category, and does not restrict the order, size or quantity of things. For example, "first threshold" and "second threshold" are just different thresholds, and there is no time sequence, size relationship or priority relationship between the two.

[0066] Fifth, the "sending" and "receiving" in this application indicate the direction of signal transmission. For example, "sending information to the second device" can be understood as the destination of the information is the second device, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules. "Receiving information from the second device" can be understood as the source of the information is the second device, which can include directly receiving from the second device through the air interface, and also includes indirectly receiving from the second device through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface.

[0067] In other words, sending and receiving can be performed between devices, for example, between the second device and the first device; it can also be performed within the device, for example, sending or receiving between components, modules, chips, software modules or hardware modules within the device through a bus, wiring or interface.

[0068] Sixth, in the present application, "when", "if" and "if" all mean that the device will take corresponding actions under certain objective circumstances, but do not limit the time, nor do they require that the device must perform judgment actions when it is implemented, nor do they mean that there are other limitations.

[0069] Seventh, in this application, words such as "example", "exemplarily", "for example" or "such as" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example", "exemplarily", "for example" or "such as" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "example", "exemplarily", "for example" or "such as" is intended to present related concepts in a concrete way.

[0070] Eighth, this document describes the method provided by the present application by taking the measurement report of the downlink reference signal as an example, but this should not limit the scenarios to which this solution is applicable. In the measurement report of the uplink reference signal, the network device can also configure multiple reference signal resources for the terminal device, and then receive the reference signal on the above resources and perform measurement reporting. Based on the same concept, those skilled in the art can make simple changes on the basis of the embodiments of this document to obtain the process of uplink reference signal measurement reporting. For the sake of brevity, this document will not go into details.

[0071] The technical solution provided in this application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), sidelink (SL) communication system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR). Among them, the 5G mobile communication system can include non-standalone (NSA) and / or standalone (SA). The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6G) mobile communication system. This application is not limited to this.

[0072] Figure 1 It is a schematic diagram of the architecture of a communication system applicable to the measurement reporting method provided in this application. Figure 1 A schematic diagram of a possible, non-limiting system architecture is shown. Figure 1 As shown, the communication system 1000 includes a radio access network (RAN) 100 and a core network (CN) 200. The RAN 100 includes at least one RAN node (e.g. Figure 1 110a and 110b in, collectively referred to as 110) and at least one terminal device (such as Figure 1 RAN 100 may also include other RAN nodes, such as wireless relay equipment and / or wireless backhaul equipment ( Figure 1 The terminal device 120 is connected to the RAN node 110 in a wireless manner. The RAN node 110 is connected to the core network 200 in a wireless or wired manner. The core network device in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices, or the same physical device that integrates the core network logical function and the radio access network logical function.

[0073] RAN 100 may be a cellular system related to the third generation partnership project (3GPP), for example, a 4G, 5G mobile communication system, or a future evolution system (for example, a 6G mobile communication system). RAN 100 may also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (cloud radio access network, CRAN), or a wireless fidelity (wireless fidelity, Wi-Fi) system. RAN 100 may also be a communication system that integrates two or more of the above systems.

[0074] The RAN node 110, which may also be sometimes referred to as an access network device, a RAN entity, or an access node, is a part of the communication system and is used to help terminal devices achieve wireless access. The multiple RAN nodes 110 in the communication system 1000 may be nodes of the same type or nodes of different types. In some scenarios, the roles of the RAN node 110 and the terminal device 120 are relative, for example, Figure 1 The network element 120i may be a helicopter or a drone, which may be configured as a mobile base station. For the terminal devices 120j that access the RAN 100 through the network element 120i, the network element 120i is a base station; but for the base station 110a, the network element 120i is a terminal device. The RAN node 110 and the terminal device 120 are sometimes referred to as communication devices, for example Figure 1 The network elements 110a and 110b may be understood as communication devices having base station functions, and the network elements 120a-120j may be understood as communication devices having terminal functions.

[0075] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a next generation base station in a 6G mobile communication system, a base station in a future mobile communication system, or an access node in a Wi-Fi system. A RAN node may be a macro base station (e.g. Figure 1 110a in), micro base stations or indoor stations (such as Figure 1110b in the example above), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node may also be a server, a wearable device, a vehicle or an onboard device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU).

[0076] In another possible scenario, multiple RAN nodes collaborate to assist the terminal in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0077] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called an open CU (open-CU, O-CU), DU may also be called an open DU (open-DU, O-DU), CU-CP may also be called an open CU-CP (open-CU-CP, O-CU-CP), CU-UP may also be called an open CU-UP (open-CU-UP, O-CU-UP), and RU may also be called an open RU (open-RU, O-RU). For the convenience of description, CU, CU-CP, CU-UP, DU and RU are used as examples for description in this application. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0078] Terminal equipment can also be called terminal, user equipment (UE), mobile station, mobile terminal, etc. Terminal equipment can be widely used in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. Terminals can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, etc.

[0079] In the embodiment of the present application, the network device may be, for example, Figure 1 The RAN node 110 shown in FIG. 1 , the terminal device may be, for example, Figure 1 As shown in the terminal device 120, the present application does not specifically limit the types of network devices and terminal devices.

[0080] In addition, terminal devices and network devices can be hardware devices, or software functions running on dedicated hardware, software functions running on general-purpose hardware, such as virtualization functions instantiated on a platform (e.g., a cloud platform), or entities including dedicated or general-purpose hardware devices and software functions. This application does not limit the specific form of terminal devices and network devices.

[0081] Figure 2 Schematic diagram of access network equipment applicable to the measurement reporting method provided in this application. Figure 2 As shown, the access network equipment includes one or more CUs, one or more DUs, and one or more RUs. For the sake of clarity, Figure 2 Only one CU, DU and RU are shown. The CU is used to connect to the core network and one or more DUs. Optionally, the CU may have some functions of the core network. The CU may include a CU-CP and a CU-UP.

[0082] CU and DU can be configured according to the protocol layer functions of the wireless network they implement: for example, CU is configured to implement the functions of the packet data convergence protocol (PDCP) layer and the protocol layers above (such as the RRC layer and / or the service data adaptation protocol (SDAP) layer, etc.); DU is configured to implement the functions of the protocol layers below the PDCP layer (such as the radio link control (RLC) layer, the medium access control (MAC) layer, and / or the physical (PHY) layer, etc.). For another example, CU is configured to implement the functions of the protocol layers above the PDCP layer (such as the RRC layer and / or the SDAP layer), and DU is configured to implement the functions of the PDCP layer and the protocol layers below (such as the RLC layer, the MAC layer, and / or the PHY layer, etc.).

[0083] When the CU includes a CU-CP and a CU-UP, the CU-CP is used to implement the control plane function of the CU, and the CU-UP is used to implement the user plane function of the CU. For example, when the CU is configured to implement the functions of the PDCP layer, the RRC layer, and the SDAP layer, the CU-CP is used to implement the control plane function of the RRC layer and the PDCP layer, and the CU-UP is used to implement the user plane function of the SDAP layer and the PDCP layer.

[0084] CU-CP can interact with network elements in the core network for implementing control plane functions. The network elements in the core network for implementing control plane functions can be access and mobility function network elements, such as access and mobility management function (AMF) network elements in 5G systems. The AMF network element is responsible for mobility management in the mobile network, such as location update of terminal devices, registration network of terminal devices, switching of terminal devices, etc.

[0085] CU-UP can interact with network elements in the core network that are used to implement user plane functions. Network elements in the core network that are used to implement user plane functions, such as the user plane function (UPF) network element in the 5G system, are responsible for forwarding and receiving data in terminal devices.

[0086] The above configuration of CU and DU is only an example, and the functions of CU and DU can also be configured as needed. For example, CU or DU can be configured to have functions of more protocol layers, or CU or DU can be configured to have partial processing functions of protocol layers. For example, some functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. For another example, the functions of CU or DU can be divided according to service type or other system requirements, such as by delay, and the functions whose processing time needs to meet the smaller delay requirement are set in the DU, and the functions that do not need to meet the delay requirement are set in the CU.

[0087] DU and RU can cooperate to jointly implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in a variety of ways according to the design. For example, DU is configured to implement baseband functions, and RU is configured to implement mid-RF functions. For another example, DU is configured to implement high-level functions in the PHY layer, and RU is configured to implement low-level functions in the PHY layer or to implement the low-level functions and RF functions. The high-level functions in the physical layer may include a part of the functions of the physical layer, which is closer to the MAC layer, and the low-level functions in the physical layer may include another part of the functions of the physical layer, which is closer to the mid-RF side.

[0088] In order to better understand the method provided in the embodiments of the present application, the terms involved in the present application are briefly explained below.

[0089] 1. Antenna port: Antenna port is a logical concept. There is no direct correspondence between an antenna port and a physical antenna. Antenna port is usually associated with a reference signal, and its meaning can be understood as a transceiver interface on the channel that the reference signal passes through. For low-frequency systems, an antenna port may correspond to one or more antenna elements. These elements jointly send reference signals, and the receiver can treat them as a whole without distinguishing these elements. For high-frequency systems, the antenna port may correspond to a beam. Similarly, the receiver only needs to regard this beam as an interface without distinguishing each element.

[0090] 2. Beam: refers to the main lobe of the radiation pattern of an antenna or antenna array, which is formed by superimposing the radiation signals of each antenna module. The transmit beam may refer to the distribution of signal strength in different directions in space after the signal is transmitted by the antenna, and the receive beam may refer to the signal strength distribution of the wireless signal received from the antenna in different directions in space. It can be understood that one or more antenna ports forming a beam can also be regarded as an antenna port set, or an antenna port group (referred to as port group). A beam can include one or more antenna ports for transmitting reference signals, data channels, control channels or detection signals, etc.

[0091] A beam is a communication resource, which can be a wide beam, a narrow beam, or other types of beams. The beam forming technology can be digital beam forming technology, analog beam forming technology, or hybrid beam forming technology.

[0092] The embodiment of beam in the protocol can also be spatial filter, spatial parameters, transmission mode, transmission mode, etc. Among them, the transmission mode represents digital weighting and / or analog weighting. Different transmission modes correspond to different digital weights, or different analog weights, or a combination of different digital weights and different analog weights. In actual communication systems, beams can be represented by resources (or signals, reference signals, port groups).

[0093] 3. Beamforming: also known as beamforming. With the development of multiple input multiple output (MIMO) technology, both the transmitter and the receiver can use multiple antennas to send and receive signals, so as to obtain diversity gain, realize spatial multiplexing, and obtain higher transmission rates. However, due to the interference and diffraction of electromagnetic waves, the electromagnetic wave signals emitted by multiple antennas may have different phases. After superposition, electromagnetic waves of different phases are enhanced in some directions and weakened in some directions. The essence of beamforming is to change the amplitude and phase of the signal of each transmitting antenna so that the superposition effect of multiple antennas is aimed at beams in individual directions in space, that is, the energy is concentrated in a few directions, and is zero or close to zero in most of the space.

[0094] Digital beamforming can be achieved by adjusting the amplitude and / or phase of the signal in the digital domain. Digital beamforming can be achieved specifically through precoding. Precoding can implement digital weighting at the subband level to achieve different digital weights for different subbands; or precoding can implement digital weighting at the full-band level, with the same digital weights for the entire frequency band.

[0095] However, after completing the processing in the digital domain, it is necessary to perform operations on the transmitter side such as digital-to-analog conversion and up-conversion, as well as operations on the receiver side such as analog-to-digital conversion and down-conversion, which are usually implemented through a radio frequency chain (RF chain). Each RF chain can include a digital to analogue converter (DAC) for implementing the operations on the transmitter side and an analog to digital converter (ADC) for implementing the operations on the receiver side, as well as hardware such as a mixer for up-conversion and a power amplifier for power amplification. In a digital beamforming system, a corresponding RF chain needs to be configured for each antenna, so the number of RF chains is proportional to the number of antennas.

[0096] Analog beamforming can be mainly achieved by using a phase shifter in the analog domain to adjust the phase of the signal. Analog beamforming can only perform analog weighting of the entire band, that is, the entire band shares the same weight.

[0097] In large-scale antenna arrays, such as in 5G systems, the number of antennas can reach hundreds, and configuring a corresponding RF link for each antenna will incur a large hardware expense. Therefore, hybrid beamforming came into being.

[0098] Hybrid beamforming combines digital beamforming and analog beamforming to form a focusing effect on a specific direction in space, i.e., a beam, through two-level weighting of digital and analog. By using hybrid beamforming, the number of RF links can be greatly reduced, thereby saving hardware overhead.

[0099] In one implementation, multiple digital channels are digitally weighted in the same manner across the entire frequency band, which has an effect similar to analog beamforming.

[0100] In another implementation, the digital channel (or digital weighting) can be divided into multiple levels. The first level performs the same digital weighting for the entire frequency band, and the second level performs weighting for the sub-band. The effect is also equivalent to hybrid beamforming. For ease of understanding, Figure 3 FIG. 1 shows a schematic diagram of hybrid beamforming (or digital beamforming). Figure 3 As shown, the digital channels are evenly divided into K1 (K1 is a positive integer) groups (or, K1 sub-arrays, K1 port groups), and the number of digital channels in each group (or, sub-array, port group) is the same, for example, K2 (K2 is a positive integer). Digital beamforming and analog beamforming can be regarded as two-level beamforming. The first-level beamforming is analog beamforming, and the weight of the first-level beamforming is w0=[w 0,0 w 0,1 … w 0,K2-1], where K2 elements correspond to K2 digital channels. The weights of the first-level beamforming are broadband, and each group uses the same first-level weight, i.e., w0. The second-level beamforming is digital beamforming, and the weights of the second-level beamforming are w1=[w 1,0 … w 1,K1-1 ], where K1 elements correspond to K1 digital channels. The second-level beamforming weights are sub-band, and the second-level weights are different between different groups (or sub-arrays, port groups), that is, the weight matrix corresponding to the digital channel is or in, represents the Kronecker product, It represents the weighted vector corresponding to the first-level weight. It can be seen that different weighted vectors have different beam directions. Therefore, the network device can adjust the beam direction by adjusting the weighted vector.

[0101] 4. Reference signal: can be used for channel measurement, channel estimation or beam quality monitoring, etc. According to the protocol of LTE or NR, the uplink reference signal may include, for example, a sounding reference signal (SRS), a physical uplink control channel (PUCCH)-demodulation reference signal (DMRS) (PUCCH-DMRS), a physical uplink shared channel (PUSCH)-demodulation reference signal (PUSCH-DMRS), a phase noise tracking reference signal (PTRS), an uplink positioning signal (uplink positioningRS), etc.; the downlink reference signal may include, for example, a synchronization signal block (SSB), a physical downlink control channel (PDCCH)-demodulation reference signal (PDCCH-DMRS), a physical downlink shared channel (PDSCH)-demodulation reference signal (PDSCH-DMRS), PTRS, a channel status information reference signal (CSI-RS), a cell reference signal (CRS) in LTE, and a tracking reference signal (TRS) in the time / frequency domain in NR. signal, TRS), downlink positioning signal (positioning RS), etc.

[0102] The reference signal in the embodiment of the present application is mainly used for channel measurement, for example, it may refer to the CSI-RS used in downlink channel measurement, or may refer to the SRS used in uplink channel measurement, or may also be other reference signals that can be used for channel measurement. This application does not limit this.

[0103] A specific application scenario is as follows: In the frequency division duplex (FDD) communication scenario, since the uplink and downlink channels are not reciprocal or cannot be guaranteed to be reciprocal, the network device usually sends CSI-RS to the terminal device. The terminal device measures the received CSI-RS, obtains the CSI of the downlink channel, and feeds it back to the network device. The network device can decide the resources, modulation and coding scheme (MCS), and precoding configuration of the downlink data channel of the terminal device based on the CSI.

[0104] Exemplarily, CSI may include: RI, CQI, PMI, layer indicator (LI), RSRP, reference signal reception quality (RSRQ), signal to noise ratio (SNR), signal to interference-noise ratio (SINR), etc. Which quantities in the CSI are specifically fed back by the terminal device may be determined according to the configuration, such as the "CSI-Report Configuration (CSI-ReportConfig)" described below.

[0105] 5. Reference signal resources: can be used to configure the transmission properties of reference signals, such as time-frequency resource location, port mapping relationship, power factor, and scrambling code. For details, please refer to the relevant sections on reference signal resources in 3GPP technical specifications (TS) 38.211 and 38.331. The transmitting device can send reference signals based on the reference signal resources, and the receiving device can receive reference signals based on the reference signal resources.

[0106] 6. Reference signal configuration: Reference signal configuration may include reference signal resource configuration and reference signal reporting configuration. The following takes CSI-RS configuration as an example for introduction.

[0107] The two more important parts of CSI-RS configuration are "CSI-ReportConfig" and "CSI-ResourceConfig". "CSI-ReportConfig" and "CSI-ResourceConfig" are names used only for ease of description, and other names may also be used. This application does not limit this.

[0108] Among them, "CSI-ReportConfig" can be used to configure parameters related to CSI reporting, such as "report configuration identifier (ReportConfigId)", "report configuration type (reportConfigType)", "report quantity (reportQuantity)", etc. "reportConfigId" can be used to mark "CSI-ReportConfig", that is, one "reportConfigId" can correspond to one "CSI-ReportConfig". "reportConfigType" is used to configure the reporting type, which can be specifically divided into: periodic reporting, semi-continuous reporting and non-periodic reporting. "reportQuantity" can be used to configure the reported information, for example: CRI, PMI, RI, LI, CQI, RSRP, RSRQ, SNR, SINR, etc. Different information can be reported through different configurations.

[0109] “CSI-ResourceConfig” may be used to configure CSI-RS resource-related information, such as “CSI resource configuration identifier (CSI-ResourceConfigId)” and CSI-RS resources used for measurement.

[0110] Among them, "CSI-ResourceConfigId" is the identifier of "CSI resource configuration (CSI-ResourceConfig)", which is used to mark the "CSI-ResourceConfig", and can be associated with "CSI-ReportConfig" through this variable. The CSI-RS resources used for measurement involved in this application are mainly non-zero power (none-zero power, NZP) CSI-RS resources (NZPCSI-RS resource).

[0111] Exemplarily, through the high-level parameters "NZP-CSI-RS-Resource", "CSI-ResourceConfig" and "NZP-CSI-RS resource set (NZP-CSI-RS-ResourceSet)", each terminal device can be configured with one or more NZP CSI-RS resource sets, and each NZP CSI-RS resource set includes one or more NZP CSI-RS resources. Each NZP CSI-RS resource can be identified by an "NZP-CSI-RS resource identifier (nzp-CSI-RS-ResourceId)".

[0112] Table 1 shows the format of some fields in the measurement report information.

[0113] Table 1

[0114]

[0115] As shown in Table 1, the CRI field is used to carry CRI, which is used to indicate the identifier of the CSI-RS resource to be reported, and its length is Indicates the number of CSI-RS resources in resource set s, that is, the number of resources in NZP-CSI-RS-ResourceSet. The SSB resource indicator (SSBRI) field is used to carry SSBRI, which is used to indicate the identifier of the SSB resource to be reported. Its length is Indicates the number of SSB resources in resource set s. The terminal device can report one or more of CRI or SSBRI.

[0116] RSRP can be reported differentially. For the maximum value of RSRP, its absolute value can be reported by 7-bit quantization, as shown in the RSRP field in the table. The RSRP indicated by this field corresponds to the reference signal resource corresponding to the reference signal with the highest received power; other RSRPs can be reported by 4-bit quantization to show the difference between them and the maximum value of RSRP, as shown in the Differential RSRP field in the table.

[0117] The above text uses PMI, CRI, SSBRI, RSRP and other reported quantities as examples to briefly explain the measurement results, but this should not constitute any limitation to this application. This application does not limit the specific content and indication method of the measurement results.

[0118] In an embodiment of the present application, CSI may be carried in uplink control information (UCI) and transmitted through a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

[0119] 7. Component carrier (CC): frequency domain resource, or carrier, corresponding to a serving cell. A network device can schedule one or more CCs for a terminal device. In this application, sending or receiving a reference signal on a CC means sending or receiving a reference signal on the frequency band corresponding to the CC.

[0120] When analog beamforming or hybrid beamforming is used, network devices can only schedule beams in time division. Figure 4 Describe the possible scenarios in detail. Figure 4 is a schematic diagram of a network device sending a reference signal. As an example, Figure 4 The reference signal shown in is CSI-RS.

[0121] like Figure 4 As shown, different beams serve different terminal devices, that is, different terminal devices correspond to different target beams. For example, the target beam corresponding to terminal device 0 is beam 0, the target beam corresponding to terminal device 1 is beam 1, and the target beam corresponding to terminal device 2 is beam 2, wherein the target beam can be a beam with a signal quality higher than a set threshold among multiple beams, for example, it can be a beam with the strongest signal quality. Then the terminal device only reports the channel information of beam 0. Terminal device 1 only reports the channel information of beam 1, and terminal device 2 only reports the channel information of beam 2. In this way, when the network device schedules a certain beam (taking beam 2 as an example), since terminal device 1 does not report the channel information of beam 2, the network device cannot obtain the channel status of beam 2 between terminal device 1 and the network device. Therefore, the network device cannot schedule resources for terminal device 1 and terminal device 2 at the same time, and the performance of the entire network is poor.

[0122] To this end, the present application provides a measurement reporting method. After receiving multiple reference signals, the first communication device can perform measurements based on the above multiple reference signals to obtain and report multiple groups of channel information to the second communication device. Compared with reporting a group of channel information, the second communication device can obtain more comprehensive channel information, which is convenient for resource scheduling and improves the performance of the entire network. In addition, the reported multiple groups of channel information may include the first type of channel information indicated to be reported by the second communication device or determined to be reported according to the first preset rule, so that the required channel information can be reported according to demand, which is convenient for the second communication device to perform resource scheduling, thereby improving the performance of the network.

[0123] The measurement reporting method provided by the present application will be described in detail below in conjunction with the accompanying drawings. In the following embodiments, the first communication device is taken as an example of a terminal device, and the second communication device is taken as an example of a network device, but this should not constitute any limitation on the embodiments of the present application. For example, the first communication device may also be a network device, and the second communication device may also be a terminal device.

[0124] Figure 5 It is a schematic flowchart of the measurement reporting method 500 provided in an embodiment of the present application. Figure 5 The method is described by merely taking the interaction between a network device and a terminal device as an example, and should not constitute any limitation to the present application. Figure 5The network device in the embodiment may also be replaced by a component configured in the network device (such as a chip, a chip system, a processor, etc.), or a logic module or software that can realize all or part of the functions of the network device. The terminal device may be replaced by a component configured in the terminal device (such as a chip, a chip system, a processor, etc.), or a logic module or software that can realize all or part of the functions of the terminal device.

[0125] Figure 5 The method 500 shown includes steps 505 to 530. Each step in the method 500 is described in detail below.

[0126] In step 510, the network device sends a plurality of reference signals to the terminal device. Correspondingly, the terminal device receives the plurality of reference signals.

[0127] The types of the above-mentioned multiple reference signals may be, for example, CSI-RS, or SSB, PDCCH-DMRS, PDSCH-DMRS, PTRS, CRS in LTE, TRS in NR, downlink positioning signal, etc. This application does not limit the type of reference signal.

[0128] In one possible implementation, the above-mentioned multiple reference signals can be sent in a time division manner, that is, the above-mentioned multiple reference signals are sent on different time domain resources (time slots or orthogonal frequency division multiplexing (OFDM) symbols), and different reference signals correspond to different port groups (or correspond to different reference signal resource groups).

[0129] In another possible implementation, the above-mentioned multiple reference signals can be sent in a frequency division manner, that is, the above-mentioned multiple reference signals are sent on different frequency domain resources (that is, component carriers, resource blocks, or different subcarriers), and different reference signals correspond to different port groups (or correspond to different reference signal resource groups).

[0130] For example, in Figure 2 In the access network device shown, the specific implementation of step 510 may be: the DU corresponding to the network device sends the above multiple reference signals through the RU. In the O-RAN system, the specific implementation of step 510 may be: the O-DU corresponding to the network device sends the above multiple reference signals through the O-RU.

[0131] Optionally, before step 510, the method 500 further includes step 505: the network device sends reference signal configuration information to the terminal device. Accordingly, the terminal device receives the reference signal configuration information from the network device.

[0132] As mentioned above, the reference signal configuration may include two parts: reference signal resource configuration and reference signal reporting configuration. In other words, the reference signal configuration information can be used to configure reference signal resources and reference signal measurement (or channel information measurement reporting). For example, in downlink channel measurement, reference signal resources may include NZP-CSI-RS resources, and reference signal reporting may include CSI reporting. One possible form of reference signal resource configuration is the configuration information of the NZP-CSI-RS resources shown above. For the specific content of NZP-CSI-RS resources and CSI reporting, please refer to the relevant description in the above terminology introduction, which will not be repeated.

[0133] In the embodiment of the present application, the reference signal resource configuration may include: configuration of reference signal port groups (which may be referred to as port groups), configuration of CCs, etc. Among them, the configuration of the port group may include an indication of the number of port groups, and an indication of the port number and / or the number of ports included in each port group. For example, if the number of port groups is K, the number of CCs is C, and K and C are both positive integers, then the number of ports in the kth port group on the cth CC may be P. CSI-RS,k (c), k=0, 1,..., K-1; c=0, 1,..., C-1; P CSI-RS,k (c) is a positive integer.

[0134] One possible situation is that the number of ports in the same port group on different CCs is the same, for example, both are P CSI-RS,k , that is, P CSI-RS,k (c) = P CSI-RS,k , P CSI-RS,k Positive integer.

[0135] Another possible situation is that the number of ports in different port groups is the same, for example, both are P CSI-RS , that is, P CSI-RS,k =P CSI-RS , P CSI-RS,k Is a positive integer.

[0136] Another possible situation is that the number of ports in different port groups on different CCs is the same, for example, both are P CSI-RS , that is, P CSI-RS,k (c) = P CSI-RS .

[0137] In an embodiment of the present application, a port group may include multiple ports. Each reference signal can be sent through a port group, so each reference signal can be said to correspond to a port group. Each port group corresponds to a transmission method, or a transmission mode. Among them, the transmission method represents digital weighting and / or analog weighting, that is, different transmission methods correspond to different digital weights, or different analog weights, or a combination of different digital weights and different analog weights. Since the multiple reference signals transmitted by the multiple reference signal resources in each reference signal resource group correspond to the same port group, the multiple reference signals transmitted by the multiple reference signal resources in each reference signal resource group correspond to the same transmission method or transmission mode.

[0138] Since multiple ports in a port group correspond to a transmission method or transmission mode, the intensity of the transmitted reference signal in space is concentrated in a certain direction. Therefore, the reference signal sent by the network device through a port group can also be regarded as a beam.

[0139] In the above configuration, the network device is configured with K port groups, so the network device can send reference signals in different directions through the K port groups. The reference signal sent through a port group can be understood as a reference signal sent through a beam. Different beams can be sent through different port groups, or they can be sent through the same port group based on different digital weights and / or analog weights. This application does not limit this.

[0140] Exemplarily, the reference signal configuration information may be carried in an RRC message. For example, the reference signal is a CSI-RS, and the configuration of the reference signal resource in the reference signal configuration information may be configured by parameters in the information element "CSI-ResourceConfig" carried in the RRC message; the configuration of the reference signal reporting may be configured by parameters in the information element "CSI-ReportConfig" carried in the RRC message.

[0141] In step 520, measurements are performed based on the multiple reference signals to obtain multiple groups of channel information.

[0142] In this application, channel information may also be referred to as channel response, and this application does not specifically limit its name. For example, CSI is a type of channel information, which is information that can reflect channel characteristics and channel quality.

[0143] As an example, the above-mentioned channel information may include, but is not limited to, one or more parameters of CRI, CQI, PMI, RI, LI, RSRP, RSRQ, SNR, and SINR, which is not limited in this application.

[0144] As an example, in type II codebook feedback, the precoding matrix corresponding to one transmission layer and one subband to be fed back can be expressed as W: W = W1W2, where the dimension of W is P CSI-RS ×N3, W1 is the wideband precoding matrix, and its dimension is P CSI-RS ×2L, W1 is the subband precoding matrix, and its dimension is 2L×N3. CSI-RS represents the number of CSI-RS ports, N3 represents the number of subbands or PMIs, and 2L represents the number of discrete Fourier transform (DFT) beams (or the number of ports) fed back by the terminal device. PMI may specifically include feedback of precoding matrices for different transmission layers and subbands.

[0145] As another example, in the codebook feedback of type II, the precoding matrix to be fed back corresponding to one transmission layer can also be expressed as W: Among them, the dimension of W is P CSI-RS ×N3, W1 is the wideband precoding matrix, and its dimension is P CSI-RS ×2L. The dimensions are 2L×M, The dimensions are 2L×M, The dimension is M×N3. It is the conjugate transpose of the M row vectors in the inverse discrete Fourier transform (IDFT) matrix (or IDFT basis) of dimension N3×N3, or the M column vectors in the DFT matrix of dimension N3×N3. M represents the number of basis vectors selected from the IDFT matrix. CSI-RS For the description of other parameters such as N3, 2L, etc., please refer to the above text and will not be repeated here. PMI may specifically include feedback on precoding matrices of different transmission layers. For the codebook feedback of type II, please refer to the relevant sections in 3GPP TS 38.214 and will not be repeated here.

[0146] It should be understood that the above-mentioned multiple groups of channel information are channel information reported by the terminal device, and the terminal device can obtain more groups of channel information by measuring based on the above-mentioned multiple reference signals. In other words, the terminal device can obtain one or more groups of channel information based on measuring the above-mentioned multiple reference signals, and the terminal device can report at least one group of channel information in the one or more groups of channel information, and the at least one group of channel information can include the first type of channel information and / or the second type of channel information.

[0147] In step 530, the terminal device sends the above-mentioned multiple sets of channel information to the network device. Correspondingly, the network device receives the above-mentioned multiple sets of channel information.

[0148] For example, in Figure 2 In the access network device shown, the specific implementation of the network device receiving the above multiple groups of channel information can be: the RU corresponding to the network device receives the above multiple groups of channel information, and the DU processes it. In the O-RAN system, the specific implementation of the network device receiving the above multiple groups of channel information can be: the O-RU corresponding to the network device receives the above multiple groups of channel information, and the O-DU processes it.

[0149] Among them, the above-mentioned multiple groups of channel information include first-category channel information and / or second-category channel information, the first-category channel information is reported by the network device or determined to be reported by the terminal device according to the first preset rule, and the second-category channel information is reported according to the second preset rule.

[0150] The above-mentioned multiple groups of channel information include the first category of channel information and / or the second category of channel information. One possible design is that the above-mentioned multiple groups of channel information can be the first category of channel information. Another possible design is that the above-mentioned multiple groups of channel information can be the second category of channel information. Another possible design is that part of the channel information of the above-mentioned multiple groups of channel information is the first category of channel information, and the other part of the channel information is the second category of channel information. The first category of channel information can include one or more groups, and the second category of channel information can include one or more groups. The present application does not limit the number of the first category of channel information and the second category of channel information.

[0151] Each group of channel information may correspond to a beam (or port group, reference signal). Exemplarily, a reference signal may correspond to a group of channel information. For example, a terminal device may perform measurements based on a reference signal to obtain a group of channel information. In addition, two or more reference signals may also correspond to a group of channel information. For example, a terminal device may perform measurements based on two reference signals to obtain a group of channel information. This application does not limit this.

[0152] It should be understood that in actual applications, the terminal device may also receive multiple reference signals from the network device, perform measurements based on the multiple reference signals, obtain a set of channel information, and report the set of channel information to the network device. The set of channel information may be first-category channel information or second-category channel information.

[0153] The above two possible designs for the first type of channel information are described in detail below.

[0154] 1. The first type of channel information is reported by network equipment.

[0155] One possible implementation is that the first type of channel information is channel information corresponding to one or more group indexes indicated by the network device, and each group of channel information in the above multiple groups of channel information corresponds to a group index. In other words, the network device indicates one or more group indexes to the terminal device, and the terminal device reports the channel information corresponding to the one or more group indexes.

[0156] Exemplarily, the group index corresponding to the channel information to be reported can be carried in the reference signal reporting configuration. For example, the network device can indicate the number of groups M of measured channel information, the number P of reported channel information groups, and the PMI configuration corresponding to each group of channel information through the reference signal reporting configuration. P can be a positive integer less than or equal to M. In other words, the reported P groups of channel information come from the M groups of channel information obtained by measurement. Accordingly, the terminal device can perform measurements based on the corresponding reference signal based on the indication of the network device, obtain the channel information corresponding to the indicated group index, and report it to the network device.

[0157] Optionally, M is a positive integer equal to K, ie, M=K, or M is a positive integer greater than K, ie, M>K.

[0158] One possible situation is that M=K. The network device sends K reference signals through K port groups. The terminal device can perform measurements based on each received reference signal to obtain a set of measurement results, and perform measurements based on K reference signals to obtain K groups of measurement results. Each of the K groups of measurement results can correspond to a port group (or reference signal, or beam).

[0159] Another possible situation is that M>K. The network device sends K reference signals through K port groups. The terminal can perform measurements based on each received reference signal to obtain a set of measurement results, and perform measurements based on K reference signals to obtain K groups of measurement results. The terminal device can further encrypt the K groups of measurement results to obtain more groups (i.e., M groups) of measurement results.

[0160] Take channel information as an example. The channel information obtained based on K reference signals is: A0, A1, ..., A K-1 , where A k The dimension is N RX ×N TX , N RX Indicates the number of ports of the terminal's receiving antenna, N TX Indicates the number of ports of the transmitting antenna of the network device. For example, in the reference signal resource configuration in the above example, N TX is the number of CSI-RS ports P CSI-RS The terminal device can encrypt K groups of channel information based on M groups of coefficients. The M groups of coefficients are recorded as: The qth group of coefficients can be expressed as: The superscript T represents a transposed matrix. The M groups of coefficients may be, for example, M groups of orthogonal cover codes (OCC). By encrypting the K groups of channel information based on the M groups of coefficients, M groups of channel information may be obtained, which are: H0, H1, ..., H M-1 , where the qth group channel information H q satisfy: Among them, the M groups of coefficients can be indicated by the network device or predefined by the protocol, and this application does not limit this.

[0161] In one example, K=2, M=4, the K groups of channel coefficients corresponding to the K reference signals are A0 and A1. The M groups of coefficients are: is an imaginary unit. Thus, the channel information of the M groups can be calculated as follows: H0=A0, H1=A1, H2=jA0+A1, H3=A0+jA1.

[0162] Based on the method provided above, the terminal device may perform similar encryption processing on other measurement results except the channel information, or may obtain M groups of measurement results from K groups of measurement results by other means, such as interpolation.

[0163] Another possible implementation method in which the first type of channel information is reported by the network device is that the first type of channel information is obtained by measuring based on the reference signal carried on the target reference signal resource, and the identifier of the target reference signal resource and / or the identifier of the resource set to which the target reference signal resource belongs is indicated by the network device. In other words, the network device indicates the identifier of the target reference signal resource and / or the identifier of the resource set to which the target reference signal resource belongs to the terminal device, so that the terminal device reports the channel information obtained by measuring the reference signal carried on the target reference signal resource. Among them, the reference signal carried on the target reference signal resource is one or more reference signals (or part of the reference signal) in the reference signal received by the terminal device.

[0164] Exemplarily, the identifier of the target reference signal resource and / or the identifier of the resource set to which the target reference signal resource belongs may be carried in the reference signal reporting configuration.

[0165] For example, the network device can indicate the identifier of one or more reference signal resource sets through the reference signal reporting configuration. In this case, the terminal device can report the channel information obtained by measuring the reference signals on the reference signal resources in the above resource sets. For example, the resource sets configured by the network device include resource set 1 and resource set 2, wherein resource set 1 includes reference signal resources 1 to reference signal resources 3, and resource set 2 includes reference signal resources 4 to reference signal resources 6. The network device can indicate the identifier of resource set 1 through the reference signal reporting configuration, so that the terminal device can report the channel information obtained by measuring the reference signals on reference signal resources 1 to reference signal resources 3.

[0166] For another example, the network device may indicate the identifier of the reference signal resource set and the identifier of the reference signal resource (or only the identifier of the reference signal resource) through the reference signal reporting configuration. For example, the resource set configured by the network device includes resource set 1 and resource set 2, wherein resource set 1 includes reference signal resources 1 to reference signal resources 3, and resource set 2 includes reference signal resources 4 to reference signal resources 6. The network device may indicate the identifier of resource set 1 and the identifier of reference signal resource 2 (or only the identifier of reference signal resource 2) through the reference signal reporting configuration, so that the terminal device can report the channel information obtained by measuring the reference signal on reference signal resource 2 in reference signal resource set 1.

[0167] Figure 6 It is a schematic diagram of different numbers of reference signal resource sets configured according to an embodiment of the present application.

[0168] One possible situation is that the resources corresponding to the above-mentioned multiple reference signals belong to the same resource set, and the network device can indicate the identifier of the target reference signal resource to the terminal device. Figure 6 As shown in a), the network device configures a CSI-RS resource set for the terminal device, and the resource set includes resources corresponding to CSI-RS1, resources corresponding to CSI-RS2, ..., and resources corresponding to CSI-RS K-1. The network device can send each CSI-RS through the beam (or port group) corresponding to each CSI-RS. After receiving the above-mentioned each CSI-RS, the terminal device measures it to obtain M groups of channel information, and reports P groups of channel information to the network device, wherein P is less than or equal to M, and the P groups of channel information may include the first category of channel information and the second category of channel information, or the P groups of channel information may include one of the first category of channel information and the second category of channel information. This application does not limit this.

[0169] Another possible situation is that the resources corresponding to the above multiple reference signals are divided into at least two resource sets, and the network device can indicate the identifier of the target reference signal resource to the terminal device; it can also indicate the identifier of the target reference signal resource and the identifier of the resource set to which the target reference signal resource belongs to the terminal device. Figure 6 As shown in b), the network device configures S CSI-RS resource sets for the terminal device (CSI-RS resource set 0 and CSI-RS resource set 1 are taken as examples in the figure), including K reference signals in total. The network device can indicate the identifier of the target reference signal resource to the terminal device; it can also indicate the identifier of the target reference signal resource and the identifier of the resource set to which the target reference signal resource belongs to the terminal device. The network device can send each CSI-RS through the beam (or port group) corresponding to each CSI-RS. After receiving the above-mentioned each CSI-RS, the terminal device measures it to obtain M groups of channel information, and reports P groups of channel information to the network device, wherein P is less than or equal to M. The P groups of channel information may include first-category channel information and second-category channel information, or the P groups of channel information may include one of the first-category channel information and the second-category channel information. This application does not limit this.

[0170] 2. The first type of channel information is determined and reported by the terminal device according to the first preset rule.

[0171] The first type of channel information is measured based on the reference signal carried on the target reference signal resource, and the target reference signal resource is determined according to the first preset rule, which may be configured by the network device or may be predefined, and the present application does not limit this. The first preset rule includes any one of the following: the target reference signal resource is the mth to nth reference signal resource in at least one reference signal resource set, where m and n are integers and n≥m; the target reference signal resource is the reference signal resource corresponding to the resource used to report CSI; the target reference signal resource is the resource corresponding to the reference signal with the highest priority among multiple reference signals, and the priority of each reference signal in the multiple reference signals is indicated by the network device; or, the target reference signal resource is the resource corresponding to the reference signal with the highest RSRP (or the highest CQI, or the highest SINR, or the highest SNR) among multiple reference signals. The following will describe in detail each of the above preset rules one by one.

[0172] Rule 1: The target reference signal resource is the mth to nth reference signal resources in at least one reference signal resource set, where m and n are integers and n≥m.

[0173] Among them, m and n can be indicated by the network device or predefined, and this application does not limit this. In addition, each reference signal resource set in the at least one reference signal resource set includes resources corresponding to one or more reference signals in the multiple reference signals. In other words, the resources corresponding to the one or more reference signals can be divided into one or more resource sets, and the target reference signal resource can be the mth to nth reference signal resources in at least one resource set in the one or more resource sets.

[0174] When m=n, the target reference signal resource is the mth to nth reference signal resource in at least one reference signal resource set, which can be understood as: the target reference signal resource is the mth (or nth) reference signal resource in each reference signal resource set in the at least one reference signal resource set. For example, the target reference signal resource is the first reference signal resource in each reference signal resource in the at least one reference signal resource set. For another example, the target reference signal resource is the last reference signal resource in each reference signal resource in the at least one reference signal resource set.

[0175] When n>m, the target reference signal resource is the mth to nth reference signal resource in at least one reference signal resource set, which can be understood as: the target reference resource includes the (n-m+1) reference signal resources in each reference signal resource set in the at least one reference signal resource set. For example, the resources corresponding to the above multiple reference signals are divided into two reference signal resource sets, each reference signal resource set includes 5 reference signal resources, and the target reference signal resource can be the 1st to 3rd reference signal resources in each reference signal resource set in the above two reference signal resource sets.

[0176] Rule 2: The target reference signal resource is the reference signal resource corresponding to the resource used for reporting CSI.

[0177] The network device may indicate to the terminal device one or more reference signal resources among the resources used for reporting CSI, and the terminal device performs measurements based on the reference signals on the one or more reference signal resources to obtain and report channel information. For example, the network device may indicate one or more reference signal resources among the resources used for reporting CSI in the reference signal reporting configuration. For example, a CRI index and a PUCCH resource for reporting CSI are configured in the reporting configuration, and the PUCCH resource is associated with the CRI. For specific signaling examples, refer to the field "CRIandPUCCH-CSI-Resource" in Table 2.

[0178] Table 2

[0179]

[0180] Rule 3: The target reference signal resource is a resource corresponding to a reference signal with the highest priority among multiple reference signals, and the priority of each reference signal among the multiple reference signals is indicated by a network device.

[0181] The network device can indicate to the terminal device the priority corresponding to each reference signal among the above-mentioned multiple reference signals. The target reference signal resource is the resource corresponding to the reference signal with the highest priority among the multiple reference signals. That is to say, the terminal device can report the channel information obtained by measuring the reference signal with the highest priority among the multiple reference signals.

[0182] In a possible design, the network device may define the priority of each reference signal among multiple reference signals according to resource index, service demand, or historical data, etc. The historical data may be, for example, historical statistical data based on channel information of each reference signal by a user.

[0183] It should be understood that the target reference signal resource is a resource corresponding to a reference signal with the highest priority among multiple reference signals for example only and should not constitute any limitation to the present application. For example, in practical applications, the target reference signal resource may be a resource corresponding to a reference signal with a priority greater than or equal to a priority threshold among multiple reference signals.

[0184] Rule 4: The target reference signal resource is the resource corresponding to the reference signal with the highest RSRP among multiple reference signals.

[0185] The terminal device measures multiple reference signals to obtain measurement results, and then can report channel information obtained by measuring the reference signal with the highest RSRP among the multiple reference signals.

[0186] It should be understood that the target reference signal resource being the resource corresponding to the reference signal with the highest RSRP among multiple reference signals is only an example. For example, the target reference signal resource may be the resource corresponding to the reference signal with RSRP greater than or equal to the RSRP threshold among multiple reference signals.

[0187] It should also be understood that RSRP can also be replaced by other parameters such as CQI, SINR, SNR, etc., that is, the target reference signal resource can be a resource corresponding to a reference signal whose CQI is greater than or equal to the CQI threshold among multiple reference signals, and this application does not limit this.

[0188] It should be noted that the above-mentioned rules can be used alone or in combination. When the above-mentioned multiple rules are used alone, the terminal device can report the channel information that satisfies a certain rule; when at least two of the above-mentioned multiple rules are used in combination, the terminal device can report the channel information that satisfies the above-mentioned at least two rules. For example, when rule one and rule three are used in combination, the terminal device can determine the mth to nth reference signal resources in at least one reference signal resource set, and then select the corresponding reference signal from the mth to nth reference signal resources. The channel information of the reference signal with the highest priority is reported.

[0189] The first type of channel information is described in detail above, and the second type of channel information will be explained below.

[0190] The terminal device may also report channel information measured according to the target reference signal determined by the second preset rule. The second type of channel information may include one or more groups, and the present application does not limit the number of groups of the second type of channel information. Each group of channel information may correspond to a port group (or beam, or reference signal).

[0191] The second type of channel information is channel information measured by a target reference signal determined according to a second preset rule. The above-mentioned second preset rule includes one or more of the following: the target reference signal is the reference signal with the highest RSRP among multiple reference signals; the target reference signal is a reference signal among the multiple reference signals whose RSRP difference with the last reported RSRP is less than or equal to a first threshold; the target reference signal is a reference signal other than the reference signal corresponding to the first type of channel information among multiple reference signals; or, the target reference signal is a reference signal whose correlation with the reference signal corresponding to the first type of channel information is greater than or equal to a second threshold. The above-mentioned rules will be described in detail below.

[0192] Rule a: The target reference signal is the reference signal with the highest RSRP among multiple reference signals.

[0193] That is to say, the second type of channel information is the channel information measured by the reference signal with the highest RSRP among multiple reference signals. As mentioned above, the first type of channel information may also be the channel information determined to be reported according to this rule. In this case, the determined first type of channel information and the second type of channel information are the same. At this time, the terminal device can only report the first type of channel information (or only report the second type of channel information).

[0194] The target reference signal being the reference signal with the highest RSRP among multiple reference signals is only an example and should not constitute any limitation to the present application. For example, in practical applications, the target reference signal can be a reference signal among multiple reference signals whose RSRP is greater than or equal to the RSRP threshold.

[0195] Rule b: The target reference signal is a reference signal among the multiple reference signals, the difference between the RSRP and the last reported RSRP being less than or equal to the first threshold.

[0196] The first threshold may be predefined or indicated by a network device, which is not limited in this application.

[0197] Exemplarily, each reference signal corresponds to an RSRP, and the terminal device can report the channel information obtained by measuring the reference signal whose RSRP difference with the last reported RSRP among the multiple reference signals is less than or equal to the first threshold. For example, the multiple reference signals include reference signals 1 to 10, wherein the difference between the RSRP corresponding to reference signal 1, reference signal 2, and reference signal 5 and the last reported RSRP is less than or equal to the first threshold, then the terminal device can report the channel information (second type of channel information) obtained by measuring reference signal 1, reference signal 2, and reference signal 5.

[0198] Rule c: The target reference signal is a reference signal other than the reference signal corresponding to the first type of channel information among the multiple reference signals.

[0199] The reference signal corresponding to the first type of channel information may be understood as at least one reference signal used to measure and obtain the first type of channel information. That is, the channel information obtained by measuring the at least one reference signal is recorded as the first type of channel information.

[0200] The target reference signal is a reference signal other than the reference signal corresponding to the first type of channel information among the multiple reference signals. It can be understood that the target reference signal corresponding to the second type of channel information is any one or more reference signals other than the reference signal corresponding to the first type of channel information among the multiple reference signals. For example, the multiple reference signals include reference signals 1 to 10, wherein the first type of channel information is the channel information obtained by measuring reference signals 1 and 2, and the second type of channel information can be the channel information obtained by measuring any one or more reference signals from reference signals 3 to 10. For example, the second type of channel information can be the channel information corresponding to the reference signal with the highest RSRP among reference signals 3 to 10. For another example, the second type of channel information can be the channel information corresponding to the reference signal from reference signals 3 to 10 whose difference with the last reported RSRP is less than or equal to the first threshold. For another example, the second type of channel information can be the channel information corresponding to a randomly selected reference signal from reference signals 3 to 10.

[0201] It can be understood that if the reference signal corresponding to the second type of channel information is the same as the reference signal corresponding to the first type of channel signal, the channel information corresponding to the same reference signal is reported only once. For example, the reference signals corresponding to the first type of channel information include reference signal 1, reference signal 2, reference signal 3, and reference signal 4. If the reference signals corresponding to the second type of channel information determined according to the second preset rule are reference signal 1, reference signal 2, and reference signal 5, then only the channel information corresponding to reference signal 5 is reported in the second type of channel information.

[0202] Rule d: The target reference signal is a reference signal whose correlation with the reference signal corresponding to the first type of channel information is greater than or equal to the second threshold.

[0203] The second threshold may be predefined or indicated by a network device, which is not limited in this application.

[0204] The terminal device may determine, from reference signals other than reference signals corresponding to the first type of channel information, a reference signal whose correlation with the reference signal corresponding to the first type of channel information is greater than or equal to the second threshold, and report the corresponding measurement result. For example, the multiple reference signals include reference channels 1 to reference signals 10, and the first type of channel information is the channel information corresponding to reference signal 1. The terminal device may determine the correlation between each reference signal from reference signal 2 to reference signal 10 and reference signal 1, and select the channel information corresponding to the reference signal whose correlation is greater than or equal to the second threshold as the second type of channel information for reporting.

[0205] It can be understood that if the first type of channel information corresponds to reference signal 1 and reference signal 2, the terminal device can arbitrarily select one of the reference signals (such as reference signal 1), calculate the correlation between other reference signals among the multiple reference signals except reference signal 1 and reference signal 2 and the reference signal 1, and select the channel information corresponding to the reference signal whose correlation is greater than or equal to the second threshold as the second type of channel information for reporting.

[0206] In the above embodiment, the first type of channel information needs to be reported, and the second type of channel information is optional to be reported, but this should not constitute any limitation to the present application. For example, in one implementation, the second type of channel information may need to be reported, and the first type of channel information is optional to be reported. In other words, the multiple groups of channel information reported by the terminal device need to include the second type of channel information, and the second type of channel information is determined according to the second preset rule. Optionally, the multiple groups of channel information may also include the first type of channel information, and the first type of channel information is reported by the network device or determined to be reported according to the first preset rule.

[0207] Optionally, some parameters in the first category channel information and the second category channel information may be shared. Exemplarily, when some parameters in the first category channel information and the second category channel information have the same values, the terminal device may not report parameters with the same values ​​as those in the first category channel information in the second category channel information.

[0208] For example, the first type of channel information includes at least one of the following: PMI 1, CQI 1, RI 1, LI 1, and RSRP 1; the second type of channel information includes at least one of the following: PMI 2, CQI 2, RI 2, LI 2, and RSRP 2. When PMI 2 and PMI 1, CQI 1 and CQI 2 are different, PMI 2 may not be included in the second type of channel information, and PMI 2 corresponding to the second channel information is the same as PMI 1 by default. When RI 1 and RI 2 are the same, RI 2 may not be included in the second type of channel information, and RI 2 corresponding to the second channel information is the same as RI 1 by default. When PMI 1 is wideband, PMI 2 is wideband (W_1) + subband (W_2 and others), and the wideband part of PMI 1 and the wideband part of PMI 2 are the same, the first type of channel information may include wideband, and the second type of channel information may include subband.

[0209] Similarly, in the first type of channel information, when measurement information of multiple reference signals needs to be reported, some parameters can be shared. The specific implementation method is similar to the above example.

[0210] Similarly, in the second type of channel information, when measurement information of multiple reference signals needs to be reported, some parameters can be shared. The specific implementation method is similar to the above example.

[0211] Based on the above technical solution, after receiving multiple reference signals, the first communication device can perform measurements based on the above multiple reference signals to obtain and report multiple groups of channel information to the second communication device. Compared with reporting a group of channel information, the second communication device can obtain more comprehensive channel information, which is convenient for resource scheduling and improves the performance of the entire network. In addition, the multiple groups of channel information reported by the first communication device include the first type of channel information and / or the second type of channel information, wherein the first type of channel information can be reported by the second communication device, that is, the second communication device can flexibly indicate which channel information it wants the first communication device to report according to actual needs, thereby facilitating the first communication device to perform resource scheduling and improve network performance.

[0212] It should be noted that in the embodiments of the present application, all the drawings (such as Figure 5 or Figure 6) are only examples and should not constitute any limitation to the embodiments of the present application. For example, in practical applications, the steps shown in the present application can be adjusted in order of execution, or some steps can be added or reduced, and the embodiments of the present application are not limited to this.

[0213] Figures 7 to 9 The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal device or network device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 5 The terminal device or network device in the method embodiment shown may also be a component (such as a chip, a chip system, a processor, etc.) configured in the terminal device or the network device, or may be a logic module or software that can implement part or all of the functions of the terminal device or the network device.

[0214] Figure 7 It is a schematic block diagram of a communication device 700 provided in an embodiment of the present application.

[0215] like Figure 7 As shown, the communication device 700 includes a processing module 710 and a transceiver module 720 .

[0216] Among them, the transceiver module 720 can realize the corresponding communication function, and the transceiver module 720 can also be called an input / output interface or a communication unit. The processing module 710 can be used to perform processing operations. It should be understood that if the device 700 is a component configured in a network device or a terminal device, such as a chip, the transceiver module 720 can be an input / output interface.

[0217] Optionally, the transceiver module 720 may include a sending module and a receiving module. The sending module is used to perform the above Figure 5 The sending operation of the network device or terminal device in the receiving module is used to perform the above Figure 5 The receiving operation of the network device or terminal device.

[0218] It should be understood that when the device 700 is a component configured in a network device or a terminal device, such as a chip, the sending module can be an output interface, and the sending operation involved in the embodiment of the present application can be performed by the output interface; the receiving module can be an input interface, and the receiving operation involved in the embodiment of the present application can be performed by the input interface.

[0219] Optionally, the device 700 may further include a storage module, which may be used to store instructions and / or data, and the processing module 710 may read the instructions and / or data in the storage module to enable the device to implement the above Figure 5 The method embodiment shown.

[0220] In a possible design, the above-mentioned device 700 can be used to implement the above-mentioned Figure 5 The functions of the terminal device in the method embodiment shown in the figure, or the above-mentioned device 700 may include a method for implementing the above-mentioned Figure 5 Any function or operation unit of the terminal device in the method embodiment shown may be implemented in whole or in part by software, hardware, firmware or any combination thereof.

[0221] When the device 700 is used to implement Figure 5 In the method embodiment shown in FIG. 1 , when the terminal device functions, the transceiver module 720 (specifically, the receiving module) can be used to execute Figure 5 Step 510 in the embodiment of the present invention comprises receiving a plurality of reference signals from a network device; the processing module 710 may be used to perform Figure 5 Step 520 in the embodiment of the present invention is to perform measurement based on the above-mentioned multiple reference signals to obtain multiple sets of channel information; the transceiver module 720 (specifically, the sending module) can also be used to perform Figure 5 In step 530, the above-mentioned multiple groups of channel information are sent to the network device, and the multiple groups of channel information include first-category channel information and / or second-category channel information. The first-category channel information is reported by the network device or determined to be reported by the terminal device according to a first preset rule, and the second-category channel information is reported according to a second preset rule.

[0222] In another possible design, the above device 700 can be used to implement the above Figure 5 The function of the network device in the method embodiment shown in the figure, or the above-mentioned device 700 may include a method for implementing the above-mentioned Figure 5 Any function or operation unit of the network device in the method embodiment shown may be implemented in whole or in part by software, hardware, firmware or any combination thereof.

[0223] When the device 700 is used to implement Figure 5 In the method embodiment shown in FIG. 1 , when the network device functions, the transceiver module 720 (specifically, the sending module) can be used to execute Figure 5 Step 510 in the embodiment of the present invention is to send multiple reference signals to the terminal device; the transceiver module 720 (specifically, the receiving module) can be used to perform Figure 5 In step 530, multiple groups of channel information are received from the terminal device, the multiple groups of channel information include first-category channel information and / or second-category channel information, the first-category channel information is reported by the network device or determined to be reported by the terminal device according to a first preset rule, and the second-category channel information is reported according to a second preset rule.

[0224] Optionally, the first type of channel information is channel information corresponding to one or more group indexes indicated by the second communication device, and each group of channel information in the above multiple groups of channel information corresponds to a group index.

[0225] Optionally, the first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and an identifier of the target reference signal resource and / or an identifier of a resource set to which the target reference signal resource belongs is indicated by the second communication device.

[0226] Optionally, the first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and the target reference signal resource is determined according to a first preset rule, and the first preset rule includes any one of the following: the target reference signal resource is the mth to nth reference signal resources in at least one reference signal resource set, m and n are integers, and n≥m; the target reference signal resource is a reference signal resource corresponding to a resource used to report CSI (or CSI reporting resource); the target reference signal resource is a resource corresponding to a reference signal with the highest priority among multiple reference signals, and the priority of each reference signal in the multiple reference signals is indicated by the second communication device; or, the target reference signal resource is a resource corresponding to a reference signal with the highest RSRP among multiple reference signals.

[0227] Optionally, the second type of channel information is channel information obtained by measuring a target reference signal determined according to a second preset rule, and the above-mentioned second preset rule includes one or more of the following: the target reference signal is a reference signal with the highest RSRP among multiple reference signals; the target reference signal is a reference signal among the multiple reference signals whose RSRP difference with the last reported RSRP is less than or equal to a first threshold; the target reference signal is a reference signal among the multiple reference signals except the reference signal corresponding to the first type of channel information; or, the target reference signal is a reference signal whose correlation with the reference signal corresponding to the first type of channel information is greater than or equal to a second threshold.

[0228] Optionally, each set of channel information includes PMI, CQI, RI and CRI.

[0229] For more detailed description of the processing module 710 and the transceiver module 720, please refer to Figure 5 The relevant description in the method embodiment shown is directly obtained and will not be repeated here.

[0230] It should be noted that the transceiver module may also be referred to as a transceiver unit, a transceiver, a transceiver, or a transceiver device, etc. The processing module may also be referred to as a processor, a processing board, a processing unit, or a processing device, etc. Optionally, the transceiver module is used to perform the sending operation and the receiving operation on the terminal device or the network device side in the above method, and the device used to implement the receiving function in the communication module may be regarded as a receiving module, and the device used to implement the sending function in the communication module may be regarded as a sending module, that is, the transceiver module includes a receiving module and a sending module.

[0231] In addition, in one possible design, the aforementioned transceiver module and / or processing module may be implemented by a virtual module, for example, the processing module may be implemented by a software function module or a virtual device, and the transceiver module may be implemented by a software function module or a virtual device. In another possible design, the processing module or the transceiver module may also be implemented by a physical device, for example, if the device is implemented by a chip / chip circuit, the transceiver module may be an input-output circuit and / or a communication interface, performing input operations (corresponding to the aforementioned receiving operations) and output operations (corresponding to the aforementioned sending operations); the processing module is an integrated processor or microprocessor or integrated circuit.

[0232] It should be understood that the division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0233] Figure 8 800 is another schematic block diagram of a communication device 800 provided in an embodiment of the present application. The device 800 may be a chip system, or may be a device configured with a chip system for implementing the above method embodiment. In the embodiment of the present application, the chip system may be composed of a chip, or may include a chip and other discrete devices.

[0234] like Figure 8 As shown, the apparatus 800 may include a processor 810, which may be configured to execute a computer program or instruction in a memory to implement Figure 5 The method embodiment shown is a step performed by a terminal device or a step performed by a network device.

[0235] Optionally, the apparatus 800 further includes a communication interface 820. The communication interface 820 can be used to communicate with other devices via a transmission medium, so that the apparatus 800 can communicate with other devices. The communication interface 820 can be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of implementing transceiver functions. The processor 810 can use the communication interface 820 to input and output data, and to implement Figure 5 The measurement reporting method described in the illustrated embodiment. Specifically, the apparatus 800 can be used to implement the functions of the network device or terminal device in the above method embodiment.

[0236] When the device 800 is used to implement Figure 5 When the method shown in the figure is used, the processor 810 is used to implement the functions of the processing module 710, for example, to execute Figure 5 In step 520, the communication interface 820 is used to implement the functions of the above-mentioned transceiver module 720, for example, to execute Figure 5 Steps 510 and 530 in the above embodiment may also be performed. Figure 5 Step 505 in .

[0237] Optionally, the device 800 also includes at least one memory 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 810. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 810 may operate in coordination with the memory 830. The processor 810 may execute program instructions stored in the memory 830. At least one of the at least one memory may be included in the processor.

[0238] It should be understood that the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 810 may operate in conjunction with the memory 830. The specific connection medium between the processor 810, the communication interface 820 and the memory 830 is not limited in the embodiments of the present application. Figure 8 In the embodiment, the processor 810, the communication interface 820 and the memory 830 are connected via a bus 840. The bus 840 is Figure 8The bus is represented by bold lines, and the connection between other components is only for schematic illustration and is not intended to be limiting. The bus can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0239] It should be understood that when the above-mentioned communication device 800 is a chip applied to a terminal device, the chip implements the functions of the terminal device in the above-mentioned method embodiment. The chip of the terminal device receives a signal from other modules (such as a radio frequency module or an antenna) in the terminal device, and the signal may be sent by the network device to the terminal device; or the chip of the terminal device sends a signal to other modules (such as a radio frequency module or an antenna) in the terminal device, and the signal may be sent by the terminal device to the network device.

[0240] When the communication device 800 is a chip applied to a network device, the chip implements the functions of the network device in the above method embodiment. The chip of the network device receives a signal from other modules (such as a radio frequency module or an antenna) in the network device, and the signal may be sent by the terminal to the network device; or the chip of the network device sends a signal to other modules (such as a radio frequency module or an antenna) in the network device, and the signal may be sent by the network device to the terminal.

[0241] It should be noted that when the communication device 800 is a terminal device or a network device, the communication interface 820 may be a transceiver, which may specifically include a transmitter and a receiver, wherein the transmitter is used to send signals and the receiver is used to receive signals. When the communication device 800 is a chip applied to a terminal device or a network device, the communication interface 820 may be an input-output circuit, a bus, a module, a pin or other types of communication interface input-output circuits, wherein the input circuit in the input-output circuit may be used for receiving, and the output interface may be used for sending. Fig. 9 It is another structural diagram of the communication device 900 provided in an embodiment of the present application.

[0242] The communication device 900 may be, for example, a terminal device or a network device. The device 900 may be used to implement Figure 5The method described in the illustrated embodiment. The device 900 logically includes multiple parts, such as a processor 901, a memory 902, and a signal transceiver unit 903. Among them, the memory 902 can be used to store a computer program (also referred to as code, or instruction). The signal transceiver unit 903 is used to implement communication and signaling interaction, signal amplification, etc. between network equipment and terminal equipment. The signal transceiver unit 903 includes a transmitter 9031, a receiver 9032, and an antenna 9033. In the antenna 9033, a square box represents a digital channel, F in the square box is a digital precoding weight, and a phase shifter (circle plus oblique arrow) represents an analog channel, connecting one array or multiple arrays, that is, in practice, one phase shifter can control multiple arrays, or the phase shifter and the array can be cross-connected.

[0243] The present application also provides a computer program product, the computer program product comprising: a computer program (also referred to as code, or instruction), when the computer program is executed, can achieve Figure 5 The method described in the illustrated embodiment.

[0244] The present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program (also referred to as code or instruction). When the computer program is executed, Figure 5 The method described in the illustrated embodiment.

[0245] An embodiment of the present application provides a communication system, which includes a terminal device and a network device as described above.

[0246] It should be understood that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined to perform. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0247] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0248] The terms "unit", "module", etc. used in this specification may be used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. The units and modules in the embodiments of the present application have the same meaning and can be used interchangeably.

[0249] It will be appreciated by those skilled in the art that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or in combination with computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed devices, equipment and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0250] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0251] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0252] In the above embodiments, the functions of each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0253] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the technology or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0254] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A measurement reporting method, characterized in that: Applied to a first communication device, the method comprises: receiving a plurality of reference signals from a second communication device; Performing measurements based on the multiple reference signals to obtain multiple groups of channel information; The multiple groups of channel information are sent to the second communication device, where the multiple groups of channel information include first-category channel information and / or second-category channel information, the first-category channel information is instructed to be reported by the second communication device or determined to be reported by the first communication device according to a first preset rule, and the second-category channel information is determined to be reported according to a second preset rule.

2. The method according to claim 1, characterized in that The first type of channel information is channel information corresponding to one or more group indexes indicated by the second communication device, and each group of channel information in the multiple groups of channel information corresponds to a group index.

3. The method according to claim 1, characterized in that The first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and an identifier of the target reference signal resource and / or an identifier of a resource set to which the target reference signal resource belongs is indicated by the second communication device.

4. The method according to any one of claims 1 to 3, characterized in that The first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and the target reference signal resource is determined according to the first preset rule, and the first preset rule includes any one of the following: The target reference signal resource is the mth to nth reference signal resources in at least one reference signal resource set, where m and n are integers and n≥m; The target reference signal resource is a reference signal resource corresponding to a resource used to report channel state information CSI; The target reference signal resource is a resource corresponding to a reference signal with the highest priority among the multiple reference signals, and the priority of each reference signal among the multiple reference signals is indicated by the second communication device; or, The target reference signal resource is a resource corresponding to a reference signal having the highest reference signal received power RSRP among the multiple reference signals.

5. The method according to claim 1, characterized in that The second type of channel information is channel information obtained by measuring a target reference signal determined according to a second preset rule, where the second preset rule includes one or more of the following: The target reference signal is a reference signal with the highest RSRP among the multiple reference signals; The target reference signal is a reference signal among the multiple reference signals, the difference between the RSRP and the last reported RSRP being less than or equal to a first threshold; The target reference signal is other reference signals among the multiple reference signals except the reference signal corresponding to the first type of channel information; or, The target reference signal is a reference signal having a correlation with a reference signal corresponding to the first type of channel information that is greater than or equal to a second threshold.

6. The method according to any one of claims 1 to 5, characterized in that Each set of channel information includes a precoding matrix indicator PMI, a channel quality indicator CQI, a rank indicator RI and a reference signal resource indicator CRI.

7. A measurement reporting method, characterized in that: Applied to a second communication device, the method comprises: sending a plurality of reference signals to a first communication device; Receive multiple groups of channel information from the first communication device, the multiple groups of channel information are obtained by measuring the multiple reference signals, the multiple groups of channel information include first type of channel information and / or second type of channel information, the first type of channel information is instructed to be reported by the second communication device or determined to be reported by the first communication device according to a first preset rule, and the second type of channel information is determined to be reported according to a second preset rule.

8. The method according to claim 7, characterized in that The first type of channel information is channel information corresponding to one or more group indexes indicated by the second communication device, and each group of channel information in the multiple groups of channel information corresponds to a group index.

9. The method according to claim 7, characterized in that The first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and an identifier of the target reference signal resource and / or an identifier of a resource set to which the target reference signal resource belongs is indicated by the second communication device.

10. The method according to any one of claims 7 to 9, characterized in that The first type of channel information is obtained by measuring a reference signal carried on a target reference signal resource, and the target reference signal resource is determined according to the first preset rule, and the first preset rule includes any one of the following: The target reference signal resource is the mth to nth reference signal resources in at least one reference signal resource set, where m and n are integers and n≥m; The target reference signal resource is a reference signal resource corresponding to a resource used to report channel state information CSI; The target reference signal resource is a resource corresponding to a reference signal with the highest priority among the multiple reference signals, and the priority of each reference signal among the multiple reference signals is indicated by the second communication device; or, The target reference signal resource is a resource corresponding to a reference signal having the highest reference signal received power RSRP among the multiple reference signals.

11. The method according to claim 7, characterized in that The second type of channel information is channel information obtained by measuring a target reference signal determined according to a second preset rule, where the second preset rule includes one or more of the following: The target reference signal is a reference signal with the highest RSRP among the multiple reference signals; The target reference signal is a reference signal among the multiple reference signals, the difference between the RSRP and the last reported RSRP being less than or equal to a first threshold; The target reference signal is other reference signals among the multiple reference signals except the reference signal corresponding to the first type of channel information; or, The target reference signal is a reference signal having a correlation with a reference signal corresponding to the first type of channel information that is greater than or equal to a second threshold.

12. The method according to any one of claims 7 to 11, characterized in that Each set of channel information includes a precoding matrix indicator PMI, a channel quality indicator CQI, a rank indicator RI and a reference signal resource indicator CRI.

13. A communication device, characterized in that: The method comprises a module for implementing the method according to any one of claims 1 to 6, or comprises a module for implementing the method according to any one of claims 7 to 12.

14. A communication device, characterized in that: comprising a processor, wherein The processor is configured to execute a computer program or instruction in the memory, so that the apparatus implements the method according to any one of claims 1 to 6, or implements the method according to any one of claims 7 to 12.

15. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction. When the computer program or instruction is executed by a computer, the method according to any one of claims 1 to 6 is implemented, or the method according to any one of claims 7 to 12 is implemented.

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