Communication method and communication apparatus

Abstract

The present application provides a communication method and a communication apparatus. The method comprises: a terminal device receiving a reference signal by means of K reference signal resources, wherein K is an integer greater than 1; measuring the K reference signal resources to determine first channel state information and second channel state information, wherein the first channel state information comprises at least one of: a rank indicator, a precoding matrix indicator, and a channel quality indicator, and the second channel state information comprises at least one of: at least one reference signal resource index, reference signal received power, reference signal received signal to interference plus noise ratio, and reference signal received quality; and sending the first channel state information and the second channel state information. In this way, reference signal resource overhead can be saved.

Description

A communication method and a communication apparatus

[0001] The present application claims priority to the Chinese Patent Application No. 202410659834.7, filed on May 24, 2024, and entitled "A communication method and a communication apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

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

[0003] In wireless communication, in order to transmit and receive data, acquire system synchronization and feedback channel information, etc., a reference signal will be transmitted between the sending end and the receiving end. For example, the sending end sends a reference signal to the receiving end, and the receiving end receives the reference signal, and then can perform corresponding operations based on the reference information, such as performing channel measurement and reporting a measurement report. SUMMARY

[0004] The present application provides a communication method and a communication apparatus, which can enable a terminal device to implement analog domain beam and channel state information measurement based on the same set of reference signal resources, thereby saving reference signal resource overhead.

[0005] In the first aspect, a communication method is provided, which can be executed by a terminal device. In the absence of special description, the "terminal device" in the present application can refer to the terminal device itself (such as a mobile phone, a computer, or a tablet computer, etc.), a component in the terminal device (such as a processor, a chip, or a chip system, etc.), or a logic module or software program that can realize all or part of the functions of the terminal device.

[0006] The method can comprise: receiving reference signals through K reference signal resources, K being an integer greater than 1; measuring the K reference signal resources to determine first channel state information and second channel state information, the first channel state information comprising at least one of a rank indicator (RI), a precoding matrix indicator (PMI), and a channel quality indicator (CQI), and the second channel state information comprising at least one of at least one reference signal resource index, a reference signal received power (RSRP), a reference signal received signal to interference plus noise ratio (SINR), and a reference signal received quality (RSRQ); and transmitting the first channel state information and the second channel state information.

[0007] Based on the above technical solution, the terminal device can determine the first channel state information and the second channel state information after measuring the reference signal resources, wherein the first channel state information can be associated with a measurement result of downlink signal channel state information (CSI), such as an RI, a PMI, or a CQI, and the second channel state information can be associated with a measurement result of beam management (BM). The terminal device can implement a feedback method of BM and CSI fusion measurement by simultaneously reporting the first channel state information and the second channel state information, and can implement analog domain beam and channel state information measurement based on the same set of reference signal resources, thereby saving the overhead of reference signal resources.

[0008] In addition, based on the above technical solution, when the terminal device selects an optimal beam and reports corresponding channel state information, it can also report one or more of the ordering, RSRP, SINR, or RSRQ of a non-optimal beam, so that the network device can select appropriate analog beams for multi-user (MU) pairing based on the total set of users to be scheduled in the current cell.

[0009] Further, based on the above technical solution, the first X beams reported by the terminal device can belong to different analog beams, so that the terminal device can report user-level optimal beams and channel state information under MU pairing beams without increasing the overhead of reference signals and the complexity of terminal device measurement, and a high MU pairing probability can be achieved in the cell, thereby improving the total capacity of the cell.

[0010] In some implementations of the first aspect, the first channel state information is first channel state information of M reference signal resources of the K reference signal resources, the M reference signal resources satisfying a first condition, M being a positive integer. The first condition is one or more of: M reference signal resources of the K reference signal resources having a first measurement value greater than or equal to a first threshold; or M reference signal resources of the K reference signal resources having a first measurement value sorted in descending order.

[0011] In some implementations of the first aspect, the second channel state information is second channel state information of N reference signal resources of the K reference signal resources, the N reference signal resources satisfying a second condition, N being a positive integer. The second condition is one or more of: N reference signal resources of the K reference signal resources not having the first channel state information reported; or N reference signal resources of the K reference signal resources having a second measurement value sorted in descending order; or N reference signal resources of the K reference signal resources having a second measurement value greater than or equal to a second threshold.

[0012] In some implementations of the first aspect, the first measurement value or the second measurement value is one or more of: channel capacity, reference signal received power (RSRP), reference signal received signal to interference noise ratio (SINR), and reference signal received quality (RSRQ).

[0013] In some implementations of the first aspect, the method further includes receiving configuration information including a value of the first threshold and / or the second threshold.

[0014] In some implementations of the first aspect, the M reference signal resources and / or the N reference signal resources are indicated by a bitmap, each bit of the bitmap corresponding to a reference signal resource, and a bit value being a first value indicating that the reference signal resource belongs to the M reference signal resources or the N reference signal resources. Alternatively, the M reference signal resources and / or the N reference signal resources are indicated by at least one field, each field indicating an index of a reference signal resource. Alternatively, the M reference signal resources and / or the N reference signal resources are indicated by a field, a value of the field indicating the M reference signal resources or the N reference signal resources.

[0015] In some implementations of the first aspect, the measurement value in the second channel state information is an absolute value of the measurement value and / or a difference value between the measurement value and a reference measurement value. The measurement value is one or more of: RSRP, SINR, and RSRQ.

[0016] In some implementations of the first aspect, the measurement value is a measurement value associated with a first reference signal resource, the first reference signal resource being one of the M reference signal resources, or the first reference signal resource being a reference signal resource with the largest second measurement value among the N reference signal resources.

[0017] In some implementations of the first aspect, the reference measurement value is a measurement value associated with a second reference signal resource, the second reference signal resource being one of the M reference signal resources, or the second reference signal resource being a reference signal resource with the largest second measurement value among the N reference signal resources.

[0018] In some implementations of the first aspect, the first channel state information occupies a bit field that is more important than a bit field occupied by the second channel state information.

[0019] In a second aspect, a communication method is provided, which can be performed by a network device. In the absence of special description, the "network device" in the present application can refer to the network device itself (for example, a base station), a component in the network device (for example, a processor, a chip, or a chip system, etc.), or a logic module or software module capable of realizing all or part of the functions of the network device.

[0020] The method can include: transmitting a reference signal through K reference signal resources, K being an integer greater than 1; receiving first channel state information and second channel state information, the first channel state information and the second channel state information being determined by measuring the K reference signal resources, the first channel state information including at least one of the following: a rank indication (RI), a precoding matrix indicator (PMI), and a channel quality indicator (CQI); and the second channel state information including at least one of the following: at least one reference signal resource index, a reference signal received power (RSRP), a reference signal received signal-to-interference-and-noise ratio (SINR), and a reference signal received quality (RSRQ).

[0021] In some implementations of the second aspect, the first channel state information is first channel state information of M reference signal resources among the K reference signal resources, the M reference signal resources satisfying a first condition, M being a positive integer. The first condition is one or more of the following: M reference signal resources in the K reference signal resources with a first measurement value greater than or equal to a first threshold value; or the first M reference signal resources in the K reference signal resources sorted in descending order of the first measurement value.

[0022] In some implementations of the second aspect, in combination with the second aspect, the second channel state information is second channel state information of N reference signal resources of the K reference signal resources, the N reference signal resources satisfy a second condition, N is a positive integer, and the second condition is one or more of the following: N reference signal resources of the K reference signal resources for which the first channel state information is not reported; or the first N reference signal resources of the K reference signal resources sorted in descending order of the second measurement value; or N reference signal resources of the K reference signal resources for which the second measurement value is greater than or equal to a second threshold.

[0023] In some implementations of the second aspect, in combination with the second aspect, the first measurement value or the second measurement value is one or more of the following: channel capacity, reference signal received power (RSRP), reference signal received signal-to-interference-and-noise ratio (SINR), and reference signal received quality (RSRQ).

[0024] In some implementations of the second aspect, in combination with the second aspect, the method further includes: transmitting configuration information, the configuration information including a value of the first threshold and / or the second threshold.

[0025] In some implementations of the second aspect, in combination with the second aspect, the M reference signal resources and / or the N reference signal resources are indicated by a bitmap, each bit of the bitmap corresponding to a reference signal resource, and a bit value of a first value indicating that the reference signal resource belongs to the M reference signal resources or the N reference signal resources; or the M reference signal resources and / or the N reference signal resources are indicated by at least one field, each field indicating an index of a reference signal resource; or the M reference signal resources and / or the N reference signal resources are indicated by a field, a value of the field indicating the M reference signal resources or the N reference signal resources.

[0026] In some implementations of the second aspect, in combination with the second aspect, the measurement value in the second channel state information is an absolute value of the measurement value and / or a difference value, the difference value being a difference between the measurement value and a reference measurement value, and the measurement value is one or more of the following: RSRP, SINR, and RSRQ.

[0027] In some implementations of the second aspect, in combination with the second aspect, the measurement value is a measurement value associated with a first reference signal resource, the first reference signal resource belonging to the M reference signal resources, or the first reference signal resource being a reference signal resource of the N reference signal resources with the largest second measurement value.

[0028] In some implementations of the second aspect, in combination with the second aspect, the reference measurement value is a measurement value associated with a second reference signal resource, the second reference signal resource being one of the M reference signal resources, or the second reference signal resource being a reference signal resource with the largest second measurement value among the N reference signal resources.

[0029] In some implementations of the second aspect, in combination with the second aspect, the first channel state information occupies a bit field that is more important than a bit field occupied by the second channel state information.

[0030] The beneficial effects and possible designs related to the second aspect can be referred to the related description of the first aspect and will not be repeated here.

[0031] In a third aspect, a communication apparatus is provided. The apparatus can include a transceiver configured to receive reference signals via K reference signal resources, K being an integer greater than 1. The apparatus can also include a processor configured to measure the K reference signal resources, determine first channel state information and second channel state information, the first channel state information including at least one of a rank indication (RI), a precoding matrix indicator (PMI), and a channel quality indicator (CQI), and the second channel state information including at least one of at least one reference signal resource index, a reference signal received power (RSRP), a reference signal received signal-to-interference-and-noise ratio (SINR), and a reference signal received quality (RSRQ). The transceiver is further configured to transmit the first channel state information and the second channel state information.

[0032] In some implementations of the third aspect, in combination with the third aspect, the first channel state information is first channel state information of M reference signal resources among the K reference signal resources, the M reference signal resources satisfying a first condition, M being a positive integer. The first condition is one or more of the following: M reference signal resources in the K reference signal resources with a first measurement value greater than or equal to a first threshold; or a first M reference signal resources in the K reference signal resources ordered from large to small in a first measurement value.

[0033] In some implementations of the third aspect, in combination with the third aspect, the second channel state information is second channel state information of N reference signal resources among the K reference signal resources, the N reference signal resources satisfying a second condition, N being a positive integer. The second condition is one or more of the following: N reference signal resources in the K reference signal resources for which the first channel state information is not reported; or a first N reference signal resources in the K reference signal resources ordered from large to small in a second measurement value; or N reference signal resources in the K reference signal resources with a second measurement value greater than or equal to a second threshold.

[0034] In some implementations of the third aspect, in combination with the third aspect, the first measurement value or the second measurement value is one or more of: channel capacity, reference signal received power (RSRP), reference signal received signal to interference noise ratio (SINR), and reference signal received quality (RSRQ).

[0035] In some implementations of the third aspect, in combination with the third aspect, the transceiver is further configured to receive configuration information, the configuration information comprising a value of the first threshold and / or the second threshold.

[0036] In some implementations of the third aspect, in combination with the third aspect, the M reference signal resources and / or the N reference signal resources are indicated by a bitmap, each bit of the bitmap corresponding to a reference signal resource, and a bit value of a first value indicates that the reference signal resource belongs to the M reference signal resources or the N reference signal resources; or, the M reference signal resources and / or the N reference signal resources are indicated by at least one field, each field indicating an index of a reference signal resource; or, the M reference signal resources and / or the N reference signal resources are indicated by a field, a value of the field indicating the M reference signal resources or the N reference signal resources.

[0037] In some implementations of the third aspect, in combination with the third aspect, the measurement value in the second channel state information is an absolute value of the measurement value and / or a difference value, the difference value being a difference between the measurement value and a reference measurement value, wherein the measurement value is one or more of: RSRP, SINR, and RSRQ.

[0038] In some implementations of the third aspect, in combination with the third aspect, the measurement value is a measurement value associated with a first reference signal resource, the first reference signal resource belonging to the M reference signal resources, or the first reference signal resource being a reference signal resource with a largest second measurement value among the N reference signal resources.

[0039] In some implementations of the third aspect, in combination with the third aspect, the reference measurement value is a measurement value associated with a second reference signal resource, the second reference signal resource belonging to the M reference signal resources, or the second reference signal resource being a reference signal resource with a largest second measurement value among the N reference signal resources.

[0040] In some implementations of the third aspect, in combination with the third aspect, a bit field occupied by the first channel state information is more important than a bit field occupied by the second channel state information.

[0041] In a fourth aspect, a communication apparatus is provided, which can include: a transceiver configured to transmit reference signals through K reference signal resources, K being an integer greater than 1; and the transceiver is further configured to receive first channel state information and second channel state information, the first channel state information and the second channel state information being determined by measuring the K reference signal resources, the first channel state information including at least one of a rank indication (RI), a precoding matrix indicator (PMI), and a channel quality indicator (CQI), and the second channel state information including at least one of at least one reference signal resource index, a reference signal received power (RSRP), a reference signal received signal-to-interference-and-noise ratio (SINR), and a reference signal received quality (RSRQ).

[0042] With reference to the fourth aspect, in some implementations of the fourth aspect, the first channel state information is first channel state information of M reference signal resources of the K reference signal resources, the M reference signal resources satisfying a first condition, M being a positive integer. The first condition is one or more of: M reference signal resources of the K reference signal resources having first measurement values greater than or equal to a first threshold; or the first M reference signal resources of the K reference signal resources ordered from large to small according to the first measurement values.

[0043] With reference to the fourth aspect, in some implementations of the fourth aspect, the second channel state information is second channel state information of N reference signal resources of the K reference signal resources, the N reference signal resources satisfying a second condition, N being a positive integer. The second condition is one or more of: N reference signal resources of the K reference signal resources for which the first channel state information is not reported; or the first N reference signal resources of the K reference signal resources ordered from large to small according to second measurement values; or N reference signal resources of the K reference signal resources having second measurement values greater than or equal to a second threshold.

[0044] With reference to the fourth aspect, in some implementations of the fourth aspect, the first measurement value or the second measurement value is one or more of: a channel capacity, a reference signal received power (RSRP), a reference signal received signal-to-interference-and-noise ratio (SINR), and a reference signal received quality (RSRQ).

[0045] With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver is further configured to transmit configuration information, the configuration information including a value of the first threshold and / or the second threshold.

[0046] In some implementations of the fourth aspect, the M reference signal resources and / or the N reference signal resources are indicated by a bitmap, each bit of the bitmap corresponding to a reference signal resource, and a bit value of a first value representing that the reference signal resource belongs to the M reference signal resources or the N reference signal resources; or, the M reference signal resources and / or the N reference signal resources are indicated by at least one field, each field indicating an index of a reference signal resource; or, the M reference signal resources and / or the N reference signal resources are indicated by one field, a value of the field indicating the M reference signal resources or the N reference signal resources.

[0047] In some implementations of the fourth aspect, the measurement value in the second channel state information is an absolute value of the measurement value and / or a difference value between the measurement value and a reference measurement value, wherein the measurement value is one or more of: RSRP, SINR, RSRQ.

[0048] In some implementations of the fourth aspect, the measurement value is a measurement value associated with a first reference signal resource, the first reference signal resource belonging to the M reference signal resources, or the first reference signal resource being a reference signal resource with a largest second measurement value among the N reference signal resources.

[0049] In some implementations of the fourth aspect, the reference measurement value is a measurement value associated with a second reference signal resource, the second reference signal resource belonging to the M reference signal resources, or the second reference signal resource being a reference signal resource with a largest second measurement value among the N reference signal resources.

[0050] In some implementations of the fourth aspect, a bit field occupied by the first channel state information is more important than a bit field occupied by the second channel state information.

[0051] A fifth aspect provides a communication apparatus, which is configured to implement the method in any possible implementation of the first aspect or the second aspect. Specifically, the apparatus can include units and / or modules for implementing the method in any possible implementation of the first aspect or the second aspect, such as a processing unit and / or a communication unit.

[0052] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device). When the apparatus is a communication device, the communication unit can be a transceiver, or an input / output interface; and the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0053] In another implementation, the apparatus is a chip, chip system or circuit or communication module for a communication device (e.g., a terminal device, or a network device). When the apparatus is a chip, chip system or circuit for a communication device, the communication unit can be an input / output interface, interface circuit, output circuit, input circuit, pin or related circuit on the chip, chip system or circuit, etc.; and the processing unit can be at least one processor, processing circuit or logic circuit, etc.

[0054] In a sixth aspect, a communication apparatus is provided. The apparatus includes at least one processor configured to execute computer program or instructions to perform the method in any possible implementation of the first aspect or the second aspect. Optionally, the apparatus further includes a memory configured to store the computer program or instructions. Optionally, the apparatus further includes a communication interface coupled to the processor, configured to input the computer program or instructions to the processor, or output information from the processor.

[0055] In an implementation, the apparatus is a communication device (e.g., a terminal device, or a network device).

[0056] In another implementation, the apparatus is a chip, chip system or circuit or communication module for a communication device (e.g., a terminal device, or a network device).

[0057] In a seventh aspect, a processor is provided. The processor is configured to perform the method in the first aspect or the second aspect.

[0058] For the sending and obtaining / receiving operations involved in the processor, if no special description is made, or if it does not contradict with the actual role or inherent logic in the related description, it can be understood as the processor outputting and receiving, inputting, etc., or as the sending and receiving operations performed by the radio frequency circuit and the antenna, which are not limited in the present application.

[0059] Optionally, the apparatus further includes a memory configured to store programs; and the at least one processor is configured to execute the computer program or instructions in the memory.

[0060] Optionally, the apparatus further includes a communication interface coupled to the processor, configured to input information to the processor, or output information from the processor.

[0061] In an eighth aspect, a computer readable storage medium is provided. The computer readable medium stores program codes for execution by a device. The program codes include codes for performing the method in any possible implementation of the first aspect or the second aspect.

[0062] In a ninth aspect, a computer program product including instructions, which when executed on a computer, cause the computer to perform the method of any possible implementation of the first aspect or the second aspect.

[0063] In a tenth aspect, a chip is provided, the chip including a processor and a communication interface, the processor reading instructions on a memory through the communication interface, and performing the method provided by any possible implementation of the first aspect or the second aspect.

[0064] Optionally, the chip is a Modem chip, also known as a baseband chip, or a system on chip (SoC) chip or a system in package (SIP) chip including a modem core.

[0065] Optionally, as an implementation form, the chip further includes a memory, the memory storing a computer program or instructions, and the processor is configured to execute the computer program or instructions on the memory, and when the computer program or instructions are executed, the processor is configured to perform the method provided by any possible implementation of the first aspect or the second aspect.

[0066] In an eleventh aspect, a computer program product including instructions, which when executed on a computer, cause the computer to perform the method provided by any possible implementation of the first aspect.

[0067] In a twelfth aspect, a communication system is provided, including the terminal device and the network device as described above. BRIEF DESCRIPTION OF DRAWINGS

[0068] FIG. 1 is a schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0069] FIG. 2 is another schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0070] FIG. 3 is a schematic diagram of a network device side hybrid beamforming (HBF) architecture.

[0071] FIG. 4 is a schematic diagram of a terminal device to be scheduled.

[0072] FIG. 5 is a schematic diagram of a communication method 500 provided by embodiments of the present application.

[0073] FIG. 6 is a schematic diagram of a communication apparatus 600 provided by embodiments of the present application.

[0074] FIG. 7 is a schematic diagram of another communication apparatus 700 provided by embodiments of the present application.

[0075] FIG. 8 is a schematic diagram of a chip system 800 according to an embodiment of the present application. DETAILED DESCRIPTION

[0076] The technical solutions in the present application will be described below with reference to the drawings.

[0077] The technical solutions provided in the present application can be applied to various communication systems, such as a 5th generation (5G) or new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, and the like. The technical solutions provided in the present application can also be applied to future communication systems, such as a future communication network. The technical solutions provided in the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and internet of things (IoT) communication systems. The technical solutions provided in the present application can also be applied to low frequency scenarios, high frequency scenarios, terahertz, and the like.

[0078] The technical solutions provided in the present application can also be applied to non-terrestrial network (NTN) systems, such as inter-satellite communication and satellite communication. As an example, a satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with a base station. The satellite can act as a base station or a terminal device. The satellite can refer to a drone, a hot air balloon, a low earth orbit satellite, a medium earth orbit satellite, a high earth orbit satellite, and the like. The satellite can also refer to a non-ground base station or a non-ground device, and the like.

[0079] A device in a communication system can send a signal to another device or receive a signal from another device. The signal can include information, signaling, or data, and the like. The device can be replaced by an entity, a network entity, a network element, a communication device, a communication module, a node, a communication node, and the like. The present disclosure describes the device as an example. For example, the communication system can include at least one terminal device and at least one network device. The network device can send a downlink signal to the terminal device, and / or the terminal device can send an uplink signal to the network device.

[0080] The terminal device in the embodiments of the present application can be a device or module with corresponding communication functions for accessing the above-mentioned communication system. The terminal device can include various devices with wireless communication functions, which can be used to connect people, things, machines, etc. The terminal device can be widely used in various scenarios, such as: cellular communication, D2D, V2X, end-to-end, M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, remote medical treatment, smart power grid, smart furniture, smart office, smart wear, smart traffic, smart city UAV, robot, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. The terminal device can be a user equipment (UE) of the 3rd generation partnership project (3GPP) standard, a terminal, a fixed device, a mobile station device or a mobile device, a subscriber unit, a handset, a vehicle-mounted device, a wearable device, a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a wireless data card, a personal digital assistant (PDA), a computer, a tablet computer, a notebook computer, a wireless modem, a handset, a laptop computer, a computer with wireless transceiver function, a smart book, a vehicle, a satellite, a global positioning system (GPS) device, a target tracking device, an aircraft (such as a drone, a helicopter, a multi-copter, a quad-copter, or an airplane, etc.), a ship, a remote control device, a smart home device, an industrial device, a transport vehicle with wireless communication function, a communication module, a road side unit (RSU) with terminal function, or a device built-in the above-mentioned device (such as a communication module, a modem or a chip in the above-mentioned device, etc.), or other processing devices connected to the wireless modem. For the convenience of description, the terminal device will be described as an example of a terminal or UE hereinafter.

[0081] It should be understood that in some scenarios, the UE can also be used to act as a base station. For example, the UE can act as a scheduling entity, which provides sidelink signals between UEs in V2X, D2D or end-to-end scenarios, etc.

[0082] In embodiments of the present application, the apparatus for implementing the function of the terminal device, i.e., the terminal apparatus, can be a terminal device or an apparatus capable of supporting the terminal device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the terminal device. In embodiments of the present application, the chip system can be composed of a chip or can include a chip and other discrete devices. In addition, the apparatus can further be configured with program instructions for performing the corresponding communication function.

[0083] The network device in embodiments of the present application can be a device or module having a corresponding communication function. The network device can be a device for communicating with the terminal device, and the network device can also be referred to as an access network device or a radio access network device, such as a network device, which can be a base station. The network device in embodiments of the present application can refer to a radio access network (RAN) node (or device) for accessing the terminal device to a wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmission point, primary station, secondary station, motor slide retainer (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station can also refer to a communication module, modem, or chip for being disposed in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device assuming a base station function in D2D, V2X, M2M communication, a network side device in a future communication network, a device assuming a base station function in a future communication system, etc. The base station can support networks of the same or different access technologies. Embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0084] A base station can be fixed, or mobile. For example, a helicopter or unmanned aerial vehicle can be configured to function as a mobile base station, one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or unmanned aerial vehicle can be configured to function as a device that communicates with another base station.

[0085] In some deployments, the network device mentioned by embodiments of the present application can be a device including a CU, or a DU, or a device including a CU and a DU, or a control plane CU node (central unit-control plane (CU-CP)) and a user plane CU node (central unit-user plane (CU-UP)) and a DU node. For example, the network device can include a gNB-CU-CP, a gNB-CU-UP and a gNB-DU.

[0086] In some deployments, a plurality of RAN nodes cooperate to assist a terminal to implement wireless access, and different RAN nodes respectively implement part of the functions of a base station. For example, the RAN node can be a CU, a DU, a CU-CP, a CU-UP, or a radio unit (RU) (or radio frequency unit), etc. The CU and the DU can be separately arranged, or can also be included in the same network element, such as a BBU. The RU can be included in a radio frequency device or a radio frequency unit, such as an RRU, an AAU or an RRH.

[0087] In some deployments, the CU is a logical node that hosts the radio resource control (RRC) layer, service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of the access network device. The CU connects with network nodes such as a core network over some interfaces, which can be an E2 interface or the like. Optionally, the CU has some of the functionality of the core network. The CU (e.g., PDCP layer and higher) connects with the DU (e.g., radio link control (RLC) layer and lower) over some interfaces, which can be an Fl interface or the like. In some examples, the interfaces (e.g., Fl interface) can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transfer, etc.). The Fl application protocol (FlAP) is an application protocol for the Fl interface, which defines, in some examples, signaling procedures for the Fl. The Fl interface supports a control plane (Fl-C), a user plane (Fl-U).

[0088] In some deployments, a CU can be split into a CU-CP and a CU-UP. The CU-CP is a logical node that carries the control plane part of PDCP (PDCP-C) layer and RRC layer, and is used to implement the control plane function of the CU. The CU-CP can interact with a network element in the core network that is used to implement the control plane function. The network element in the core network that is used to implement the control plane function can be an access and mobility function network element. The CU-UP is a logical node that carries the user plane part of PDCP (PDCP-U) layer and SDAP layer, and is used to implement the user plane function of the CU. The CU-UP can interact with a network element in the core network that is used to implement the user plane function. The network element in the core network that is used to implement the user plane function. The above configurations of the CU and the DU are merely examples, and the CU and the DU can have other functions according to needs. For example, the CU or the DU can be configured to have more protocol layer functions, or the CU or the DU can be configured to have partial processing functions of the protocol layers. For example, partial functions of the RLC layer and functions of the protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and functions of the protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to service types or other system requirements. For example, functions that need to meet a relatively low latency requirement in processing time are arranged in the DU, and functions that do not need to meet the latency requirement are arranged in the CU.

[0089] In some deployments, a DU is a logical node that carries an RLC layer, a medium / media access control (MAC) layer, a higher physical layer (Higher PHY layer), and other functions. In some examples, a DU can control at least one RU. The DU is connected to the RU through some interfaces, which can be a front-haul interface. In some examples, the Higher PHY layer includes part of the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and other processing functions.

[0090] In some deployments, a RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, a RU can be a TRP or a RRH or other similar functional entity. In some examples, a Low-PHY includes portions of PHY processing such as fast Fourier transform (FFT), inverse fast Fourier transformation (IFFT), digital beamforming and filtering, and other processing functions. A RU communicates with one or more UEs over a wireless link.

[0091] A DU and a RU can or can not be co-located. A DU and a RU exchange control plane and user plane information over a fronthaul link via a lower-layer split-control, user and synchronization (LLS-CUS) interface. The LLS-CUS can include interfaces and interfaces that provide control plane and user plane, respectively. In some examples, the control plane refers to real-time control between a DU and a RU. A DU and a RU have an interface of a fronthaul link (e.g., referred to as a LLS-M interface) to exchange management information, and the management plane (M-Plane) refers to non-real-time management operations between a DU and a RU.

[0092] A DU and a RU can cooperate to collectively implement the functionality of a PHY layer. A DU can be connected to one or more RUs. The functionality that a DU and a RU have can be configured in multiple ways according to design. For example, a DU is configured to implement baseband functionality and a RU is configured to implement mid- RF functionality. As another example, a DU is configured to implement high-layer functionality in a PHY layer and a RU is configured to implement low-layer functionality in the PHY layer or to implement the low-layer functionality and RF functionality. The high-layer functionality in a PHY layer can include a portion of functionality of a PHY layer that is closer to a MAC layer, and the low-layer functionality in a PHY layer can include another portion of functionality of a PHY layer that is closer to a mid-RF side.

[0093] In one possible design, a processing unit in a BBU that implements baseband functionality is referred to as a base band high (BBH) unit, and a processing unit in a RRU / AAU / RRH that implements baseband functionality is referred to as a base band low (BBL) unit.

[0094] The CU (or CU-CP and CU-UP), DU, or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, the radio access network can also be an open radio access network (O-RAN) architecture, in which the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), the CU-CP can also be referred to as an open CU-CP (O-CU-CP), the CU-UP can also be referred to as an open CU-UP (O-CU-UP), and the RU can also be referred to as an open RU (O-RU). Any of the CUs (or CU-CPs, CU-UPs), DUs, and RUs in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0095] In the embodiments of the present application, the device for implementing the function of the network device can be a network device, or a device capable of supporting the network device to implement the function, such as a chip system or a chip or a circuit or a communication module (i.e., a communication module performing a communication function), which can be installed in the network device. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices. In addition, program instructions for performing corresponding communication functions can also be configured in the device. In the embodiments of the present application, only the device for implementing the function of the network device is taken as an example for description, and the scheme of the embodiments of the present application is not limited.

[0096] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on aircraft, balloons, and satellites in the air. The scenarios in which the network device and the terminal device are located are not limited in the embodiments of the present application. In addition, the terminal device and the network device can be hardware devices, or software functions running on special-purpose hardware, general-purpose hardware, such as virtualized functions instantiated on a platform (for example, a cloud platform), or entities including special-purpose or general-purpose hardware devices and software functions. The specific forms of the terminal device and the network device are not limited in the present application.

[0097] First, a communication system suitable for the embodiments of the present application is briefly introduced as follows.

[0098] Referring to FIG. 1, FIG. 1 is a schematic diagram of a wireless communication system suitable for the embodiments of the present application.

[0099] As shown in FIG. 1, the wireless communication system includes a radio access network 100. The radio access network 100 can be a next generation (e.g., a future communication network or a higher version) radio access network, or a legacy (e.g., a 5G, a 4G, a 3G or a 2G) radio access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be connected to each other or connected to one or more network devices (110a, 110b, collectively referred to as 110) in the radio access network 100. Network elements in the wireless communication system are connected through interfaces (e.g., NG, Xn) or air interfaces.

[0100] FIG. 1 is only a schematic diagram. The wireless communication system can further include other devices, such as a core network (CN) device, a wireless relay device, and / or a wireless backhaul device, which are not shown in FIG. 1.

[0101] Referring to FIG. 2, FIG. 2 is another schematic diagram of a wireless communication system suitable for embodiments of the present application.

[0102] As shown in FIG. 2, the wireless communication system can include a core network device, an access network device (e.g., a RAN), and a terminal device. The access network device communicates with the core network device through a backhaul link and communicates with the terminal device through an air interface. For example, a BBU in the access network device communicates with the core network through a backhaul link, and a RU in the access network device communicates with the terminal device through an air interface. The BBU can communicate with the RU through a front-haul link. The BBU and the RU can be co-located or not co-located. In some deployments, the BBU includes at least one CU and at least one DU. The CU and the DU can communicate through a mid-haul link.

[0103] FIG. 2 is only a schematic diagram. The wireless communication system can further include other devices, which are not shown in FIG. 2.

[0104] In order to better understand the technical solutions of the present application, some related technologies involved in the technical solutions of the present application are introduced.

[0105] 1. Reference signal (RS): can also be referred to as pilot, reference sequence, reference signal, etc. For the sake of unity, the reference signal is described below. The reference signal can be used for measurement, such as channel measurement or channel estimation, etc.

[0106] In a communication system, it is necessary to estimate uplink or downlink channel for transmitting and receiving data, acquiring system synchronization and feedback channel information. Channel estimation refers to a process of reconstructing or recovering a received signal to compensate for signal distortion caused by channel fading and noise generated by fading, which determines time-domain and frequency-domain variations of a channel using reference signals known by a transmitter and a receiver. The reference signals are also called reference signals, which are distributed in different resource elements (REs) in time-frequency two-dimensional space within an orthogonal frequency division multiplexing (OFDM) symbol, and have known amplitudes and phases.

[0107] At the physical layer, uplink communication can include transmission of uplink physical channels and uplink signals. The uplink physical channels include a physical random access channel (PRACH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), etc., and the uplink signals include a sounding reference signal (SRS), a physical uplink control channel demodulation reference signal (PUCCH-DMRS), a physical uplink shared channel demodulation reference signal (PUSCH-DMRS), a phase tracking reference signal (PTRS), a positioning reference signal (such as a positioning SRS or SRS for positioning), etc.

[0108] At the physical layer, the downlink communication can include transmission of downlink physical channels and downlink signals. Among them, the downlink physical channels include a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), etc., and the downlink signals include a primary synchronization signal (PSS) / secondary synchronization signal (SSS), a physical downlink control channel demodulation reference signal (PDCCH-DMRS), a physical downlink shared channel demodulation reference signal (PDSCH-DMRS), a phase tracking signal (PTRS), a channel state information reference signal (CSI-RS), a cell reference signal (CRS), a tracking reference signal (TRS), a positioning RS, etc.

[0109] 2. Resource: In the embodiments of the present application, the network device can configure a terminal device with a resource set or a resource.

[0110] The resource set can include at least one of a channel state information (CSI) synchronization signal block (CSI-SSB) resource set, a CSI interference measurement (CSI-IM) resource set, a non zero power-channel state information reference signal (NZP-CSI-RS) resource set, or a zero power-channel state information reference signal (ZP-CSI-RS) resource set.

[0111] The reference signal in the embodiments of the present application can correspond to a resource, the reference signal can occupy the resource, and one resource can be referred to as a resource of the reference signal. The resource in the embodiments of the present application can include a frequency domain resource and / or a time domain resource, etc. The resource can also include at least one of a CSI-SSB resource, or a CSI-IM resource, or an NZP-CSI-RS resource, a ZP-CSI-RS resource, a sounding reference signal (SRS) resource, a demodulation reference signal (DMRS) resource, a PTRS resource, a CRS resource, or a TRS resource. In the embodiments of the present application, a resource is taken as an example of a channel state information reference signal (CSI-RS) resource for introduction, the CSI-RS resource is also written as a channel state information reference signal (CSIRS) resource in this paper, and the CSIRS resource can also be replaced by other resources. The CSI-RS resource can also be understood as a resource occupied by the CSI-RS, and can also be replaced by a resource corresponding to the CSI-RS, or a resource of the CSI-RS.

[0112] 3、Channel state information (CSI): CSI can characterize the channel properties, i.e., the impact of the signal as it travels from the transmitter to the receiver through the channel, such as scattering, fading, and energy attenuation with distance. This information enables data transmission to adapt to the channel environment, thereby achieving high bit rates and reliable communication in multi-antenna systems. CSI can include one or more of the following parameters: layer indicator (LI), reference signal received power (RSRP), CSI signal to interference plus noise ratio (CSI-SINR), reference signal received quality (RSRQ), synchronization signal block index (SSB-index), codebook index (i1), rank indicator (RI), precoding matrix indicator (PMI), channel quality indicator (CQI), CSI-RS resource indicator (CRI), cri-RI-PMI-CQI, cri-RI-i1, cri-RI-i1-CQI, cri-RI-CQI, cri-RSRP, ssb-index-RSRP, cri-RI-LI-PMI-CQI, etc.

[0113] 4. Precoding and codebook: In a communication system, the throughput can be improved by using multiple input multiple output (MIMO) technology to increase the system capacity. The mathematical expression is y = Hx + n, where y is the received signal, H is the MIMO channel, x is the transmitted signal, and n is the noise. In a communication system with multiple antennas, the signals of multiple transmitting antennas are superimposed on any receiving antenna, so the method of transmitting signals at the transmitting end affects the performance of the system, and the recovery of the transmitted signal at the receiving end is often complex. In this context, precoding is used to reduce system overhead and maximize the system capacity of MIMO, and to reduce the complexity of the implementation of the receiver to eliminate the effects of the channel. At this time, the mathematical expression is y = HPx + n, and P is the precoding matrix (or vector, or precoder). In order to simplify the implementation complexity, P can be selected from a pre-defined matrix (or vector) set, which is called a codebook.

[0114] 5. Precoding matrix indicator (PMI) information: PMI information can be used to indicate a precoding matrix. The precoding matrix may, for example, be a precoding matrix determined by a terminal device based on a channel matrix of a frequency domain unit. The channel matrix can be determined by the terminal device through channel estimation or based on channel reciprocity. However, it should be understood that the specific method of determining the precoding matrix by the terminal device is not limited to the above, and the specific implementation can refer to the protocol. For the sake of brevity, they will not be listed one by one here.

[0115] For example, the precoding matrix can be obtained by singular value decomposition (SVD) of the channel matrix or the covariance matrix of the channel matrix, or it can also be obtained by eigenvalue decomposition (EVD) of the covariance matrix of the channel matrix. It should be understood that the above-mentioned methods of determining the precoding matrix are only examples and should not constitute any limitation on the present application.

[0116] It should be noted that, the method provided by the embodiment of the present application, the network device can determine the CSI RS port, the frequency domain discrete fourier transform (DFT) vector and the combination coefficient of the space-frequency vector used for constructing the precoding vector based on the feedback of the terminal device, and then determine the precoding matrix corresponding to each frequency domain unit. The precoding matrix can be directly used for downlink data transmission; or it can be subjected to some beamforming methods, such as zero forcing (ZF), regularized zero-forcing (RZF), minimum mean-squared error (MMSE), maximum signal-to-leakage-and-noise ratio (SLNR), etc., to obtain the final precoding matrix used for downlink data transmission. The present application does not make any limitation on this. In the absence of special instructions, the precoding matrix involved in the following can refer to the precoding matrix determined based on the method provided by the present application.

[0117] It can be understood that the precoding matrix determined by the terminal device can be understood as a precoding matrix to be fed back. The terminal device can indicate the precoding matrix to be fed back through the PMI, so that the network device recovers the precoding matrix based on the PMI. It can be understood that the precoding matrix recovered by the network device based on the PMI can be the same as or similar to the above-mentioned precoding matrix to be fed back.

[0118] In the downlink channel measurement, the higher the approximation degree of the precoding matrix determined by the network device based on the PMI and the precoding matrix determined by the terminal device, the more suitable the precoding matrix determined by the network device for data transmission can be to the channel state, and thus the reception quality of the signal can be improved.

[0119] Using more spectrum resources is an important means to improve the capability of wireless channels, and the frequency band in future communication systems becomes the next spectrum resource available for wireless communication. Since the higher the frequency band, the greater the signal energy transmission loss under the same transmission distance, in order to overcome this problem, a larger antenna array is usually used at the network device side to perform weighting processing on the transmitted signal to obtain higher array gain and thus improve the transmission energy of the signal. In order to reduce the implementation cost, the large-scale antenna array at the network device side usually adopts a hybrid beamforming (HBF) architecture, that is, one digital channel drives multiple antenna elements through multiple phase shifters, and the network device side downlink signal transmission usually adopts two-stage weights in the analog and digital domains.

[0120] Referring to FIG. 3, FIG. 3 is a schematic diagram of a network device side HBF architecture. As shown in FIG. 3, under the HBF architecture, the network device usually adopts multiple analog beams to implement coverage of different areas in a cell, and different analog beams cover different terminal devices. Considering a medium-low frequency band, the channel environment is rich in multipath, and the same terminal device can be served by different analog beams, that is, in addition to the optimal analog beam seen by the terminal device, other non-optimal analog beams can also provide data transmission for the terminal device at a lower rate. When there are multiple terminal devices to be scheduled in the cell, in order to enable simultaneous transmission of multiple terminal devices under resource multiplexing in the cell, the terminal device can measure the channel state information under multiple analog beams, thereby providing input for data scheduling decision of the network device.

[0121] At this time, considering real-time services and user scheduling requirements in the existing network, the set of users to be scheduled in the network at different times and the amount of services to be scheduled for each user are dynamically variable, and the set of analog beams to be measured by each user can be different.

[0122] Referring to FIG. 4, FIG. 4 is a schematic diagram of a terminal device to be scheduled. As shown in (a) of FIG. 4, when only UE1 and UE2 have services to be scheduled at this time (for example, referred to as T1 time), UE2 can preferentially measure beam 1 and beam 2; as shown in (b) of FIG. 4, when only UE2, UE3 and UE4 have services to be scheduled at this time (for example, referred to as T2 time), UE2 can preferentially measure beam 2 and beam 3.

[0123] Based on the existing protocol, for a high frequency band, the network device will configure beam management resources for the user. The user first identifies the top N analog beams at the user level based on the measurement and reporting of beam management, N is less than or equal to 4, and then configures pilot resources under the analog beam for obtaining channel state information under the analog beam, based on which scheduling and modulation and coding scheme (MCS) decision of downlink data transmission are guided. In the existing protocol, the pilot resources for beam management and the pilot resources for channel state information measurement are two independent pilot resource configurations, and the corresponding configuration parameters and measurement reporting contents are different.

[0124] The pilot resource configuration for beam management includes one or more pilot resource sets, each pilot resource set includes one or more pilot resources, each pilot resource includes one or two pilot ports, one pilot resource corresponds to one analog beam, and the corresponding report type (reportQuantity) is configured as cri-RSRP, or ssb-Index-RSRP, or cri-SINR, or ssb-Index-SINR, or cri-RSRP-Index, or ssb-Index-RSRP-Index, or cri-SINR-Index, or ssb-Index-SINR-Index. The specific beam management report content can include CRI, RSRP, and SINR.

[0125] The pilot resource configuration for channel state information measurement includes one or more pilot resource sets, each pilot resource set includes one or more pilot resources, each pilot resource includes 2, 4, 6, 8, 12, 24, 32 pilot ports, one pilot resource corresponds to a group of antenna ports that can jointly transmit downlink data, and the corresponding report type is configured as cri-RI-PMI-CQI, or cri-RI-LI-PMI-CQI, or cri-RI-CQI, or cri-RI-i1-CQI, or cri-RI-i1. The specific channel state information report content can include CRI, RI, CQI, and PMI.

[0126] For medium and low frequency bands, if the existing high frequency beam management process is multiplexed, each reference signal resource corresponds to a number of digital and analog two-pole beams, and the first X beams reported by the terminal device may belong to the same analog beam. Therefore, based on the existing high frequency beam management process, it is not possible to select the top N optimal analog domain beams for users, and a separate reference signal resource needs to be configured for beam management, resulting in a large reference signal overhead in the cell, affecting the available effective time-frequency resources for data transmission, and thus affecting the system capacity.

[0127] Therefore, the terminal device side simultaneously implements analog domain beam measurement and channel state information measurement based on the same set of pilot resources, thereby saving the pilot overhead in the cell.

[0128] Before introducing the scheme of the present application, the following points are explained.

[0129] (1) In the present application, "indication" can include direct indication, indirect indication, explicit indication, and implicit indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0130] In the present application, the information indicated by the indication information is referred to as to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, wherein the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be only indicated in part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be realized by means of the arrangement order of each information agreed in advance (for example, the protocol stipulates), thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending opportunity of these sub-information can be the same or different.

[0131] (2) In the present application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, or indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include direct receiving from YY through the air interface, or indirect receiving from YY through the air interface from other units or modules. "Sending" can also be understood as "output" of the chip interface, and "receiving" can also be understood as "input" of the chip interface. In other words, sending and receiving can be carried out between devices, for example, between network devices and terminal devices, or can be carried out within a device, for example, between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0132] (3) In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be mutually referenced if there is no special description and logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0133] (4) In the present application, "first", "second", and "#1", "#2", and "#n1", "#n2" and the like are only for convenience of description and are used for distinguishing objects, and are not used to limit the scope of the embodiments of the present application. They are not used to describe the order or sequence of the characteristics. It should be understood that the objects thus described can be interchanged under appropriate circumstances, so as to be able to describe schemes other than the embodiments of the present application.

[0134] (5) In the present application, "predefined" can mean standard protocol predefined, or can also mean pre-agreed or pre-negotiated between devices.

[0135] (6) In this application, the words "exemplary", "for example", etc. are used to mean example, illustration, or instance. Any embodiment or design solution described in this application as "exemplary" should not be construed as preferred or advantageous over other embodiments or design solutions. Rather, the use of the word exemplary is intended to present concepts in a concrete manner. In the embodiments of this application, "of", "corresponding" and "corresponding" are sometimes mixed. It should be pointed out that when their differences are not emphasized, their meanings are consistent.

[0136] The method provided by the embodiments of this application will be described in detail below with reference to the drawings. The embodiments provided by this application can be applied to the communication system shown in Figure 1, without limitation.

[0137] In the following embodiments, terminal devices and network devices are exemplarily illustrated. The terminal devices can be replaced by constituent components (such as chips or chip systems or circuits) of the terminal devices, and the network devices can be replaced by constituent components (such as chips or chip systems or circuits) of the network devices.

[0138] Referring to Figure 5, Figure 5 is a schematic diagram of a communication method 500 provided by an embodiment of this application. The method 500 shown in Figure 5 can include the following steps.

[0139] 510, the network device transmits reference signals through K reference signal resources, and correspondingly, the terminal device receives the reference signals transmitted by the network device through the K reference signal resources, K being an integer greater than 1.

[0140] Wherein, the network device can send RRC signaling to the terminal device, and the network device configures one or more channel state information measurement reporting configurations (CSI-ReportConfig) to the terminal device through the RRC signaling. Each channel state information measurement reporting configuration is associated with one or more reference signal resource sets (csi-rs-resourceSet). One reference signal resource set contains one or more reference signal resources, which can be used for channel measurement or interference measurement. Each reference signal resource contains one or more reference signal ports.

[0141] Further, the terminal device can perform receiving measurement on the corresponding reference signal resources based on the reference signal resources (i.e. K reference signal resources) configured by the network device, in other words, the terminal device performs measurement through the reference signals received on the K reference signal resources. In step 510, the terminal device can receive multiple reference signals.

[0142] The reference signal is a downlink reference signal. For example, the reference signal is a CSI-RS, and correspondingly, the reference signal resource is a CSI-RS resource. For another example, the reference signal is an SSB, and correspondingly, the reference signal resource is an SSB resource.

[0143] Optionally, the K reference signal resources are at least one of the following: NZP CSI RS resource, ZP CSI RS resource, CSI-IM resource, or SSB resource.

[0144] As an example, the report type associated with the channel state information measurement reporting configuration can be one or more of the following: cri-RSRP, ssb-Index-RSRP, cri-SINR, ssb-Index-SINR, cri-RI-PMI-CQI, cri-RI-LI-PMI-CQI, cri-RI-CQI, cri-RI-i1-CQI, or cri-RI-i1.

[0145] Further, as an example, the report type associated with the channel state information measurement reporting configuration can also be one or more of the following: cri-RI-PMI-CQI-RSRP, cri-RI-LI-PMI-CQI-RSRP, cri-RI-CQI-RSRP, cri-RI-i1-CQI-RSRP, or cri-RI-i1-RSRP.

[0146] For example, cri-RI-PMI-CQI-RSRP can indicate that the channel state information reported by the subsequent terminal device contains CRI, RI, PMI, CQI, and RSRP, and other report types are similar, which will not be repeated here.

[0147] 520, the terminal device measures the K reference signal resources and determines the first channel state information and the second channel state information. In other words, the terminal device obtains the first type of channel state information measurement value and the second type of channel state information measurement value based on the reference signal resources configured by the network device, determines the first channel state information based on the first type of channel state information measurement value, and determines the second channel state information based on the second type of channel state information measurement value.

[0148] The first type of channel state information measurement value is used to characterize the data transmission capability of the downlink channel, and the first type of channel state information measurement value can include at least one of the following: RI, PMI, and CQI. The second type of channel state information measurement value is used to characterize the received signal energy of different beams, and the second type of channel state information measurement value can include at least one of the following: RSRP, SINR, and RSRQ.

[0149] The first channel state information includes at least one of the following: RI, PMI, CQI, L1, and i1. The second channel state information includes at least one of the following: ranking of at least two reference signal resources, at least one reference signal resource index, RSRP, SINR, and RSRQ.

[0150] As an example, the terminal device can measure the RSRP, SINR, or RSRQ of one or more of the K reference signal resources as the second type of channel state information measurement value of the K reference signal resources. As an example, the terminal device can measure the RI, PMI, or CQI of one or more of the K reference signal resources as the first type of channel state information measurement value of the K reference signal resources. For example, the terminal device can measure the RI, PMI, CQI, L1, or i1 of one or more of the K reference signal resources with the highest second type of channel state information measurement value as the first type of channel state information measurement value.

[0151] Optionally, the terminal device determines the first channel state information as the index and / or the first type of channel state information measurement value of at least one of the K reference signal resources. As an example, the terminal device can determine the first channel state information based on one or more of the following manners.

[0152] Manner one: The terminal device determines the first channel state information as the index and / or the corresponding first type of channel state information measurement value of the M reference signal resources of the K reference signal resources.

[0153] The value of M can be a positive integer greater than or equal to 1 and less than K. The value of M can be configured by the network device to the terminal device, can be a fixed value predefined by a protocol, or can be a value determined by the terminal device autonomously.

[0154] As an example, the selection manner of the M reference signal resources can be that the terminal device selects the M reference signal resources from the configured K reference signal resources based on the measurement information of the reference signal resources and a specific criterion, such as the top M reference signal resources with the maximum received energy, or the top M reference signal resources with the maximum channel capacity, or any other arbitrary criterion.

[0155] As an example, the terminal device takes the first type of channel state information of M reference signal resources of which the first type of channel state information measurement value is greater than or equal to the first threshold value in the K reference signal resources as the first channel state information, or the terminal device takes the first type of channel state information of the first M reference signal resources in which the first type of channel state information measurement value is sorted from large to small as the first channel state information.

[0156] In a possible case, the first threshold value is configured by the network device to the terminal device.

[0157] As an example, the network device sends configuration information, and the terminal device receives the configuration information accordingly, and the configuration information includes the value of the first threshold value.

[0158] In another possible case, the first threshold value is a fixed value predefined by the protocol, or the first threshold value is autonomously decided by the terminal device.

[0159] Optionally, the terminal device takes the index of at least one reference signal resource in the K reference signal resources and / or the second type of channel state information measurement value as the second channel state information. As an example, the terminal device can determine the second channel state information based on one or more of the following manners.

[0160] Manner one: the terminal device sorts the second type of channel state information measurement value of the K-M reference signal resources in the K reference signal resources which do not report the first channel state information from large to small, sorts the index of the reference signal resource associated with the first N measurement values in the same order, and takes the sorted reference signal resource index as the second channel state information.

[0161] The value of N can be configured by the network device to the terminal device, or the value of N can be a fixed value predefined by the protocol, or the value of N can also be autonomously decided by the terminal device.

[0162] Manner two: the terminal device sorts the second type of channel state information measurement value of the K-M reference signal resources in the K reference signal resources which do not report the first channel state information from large to small, and takes the second type of channel state information measurement value of the first N reference signal resources as the second channel state information.

[0163] Manner three: the terminal device sorts the second type of channel state information measurement value of the K-M reference signal resources in the K reference signal resources which do not report the first channel state information from large to small, and takes the index of the reference signal resource associated with the first N measurement values and the second type of channel state information as the second channel state information.

[0164] The fourth mode is that the terminal device reports, to the network device, indexes of N reference signal resources of K-M reference signal resources in the K reference signal resources, for which the terminal device does not report the first channel state information, and for which the second channel state information measurement value is greater than or equal to the second threshold value.

[0165] For example, K-M >= N >= 1, and K >= M >= 1.

[0166] Optionally, the second threshold value is configured by the network device to the terminal device. For example, the network device sends configuration information, and the terminal device receives the configuration information. The configuration information includes a value of the second threshold value. Alternatively, the second threshold value is a fixed value defined in advance by a protocol. Alternatively, the second threshold value is determined by the terminal device autonomously.

[0167] 530. The terminal device sends the first channel state information and the second channel state information, and the network device receives the first channel state information and the second channel state information sent by the terminal device. In other words, the terminal device reports the first channel state information and the second channel state information to the network device based on the measurement of the K reference signal resources in step 520.

[0168] Optionally, the terminal device selects the channel state information of one or more reference signal resources to report to the network device. Channel state information reporting content of the same user carried in the same uplink channel includes the first channel state information and the second channel state information.

[0169] Optionally, the terminal device sends PUCCH or PUSCH to the network device to report the first channel state information and the second channel state information of the reference signal resources to the network device.

[0170] Based on the above technical solution, the terminal device can determine the first channel state information and the second channel state information after measuring the reference signal resources. The first channel state information can be associated with a measurement result of downlink signal channel state information (CSI), such as RI, PMI, or CQI. The second channel state information can be associated with a measurement result of beam management (BM). The terminal device can realize the feedback method of BM and CSI fusion measurement by simultaneously reporting the first channel state information and the second channel state information. The terminal device can realize analog domain beam and channel state information measurement based on the same set of reference signal resources, thereby saving the overhead of reference signal resources.

[0171] In addition, based on the above technical solution, when the terminal device selects the optimal beam and reports the corresponding channel state information, one or more of the ordering, RSRP, SINR or RSRQ of the non-optimal beam can also be reported, so that the network device can select a suitable multi-user (MU) pairing analog beam based on the total set of users to be scheduled in the current cell.

[0172] Further, based on the above technical solution, the first X beams reported by the terminal device can belong to different analog beams, so that the terminal device reports the user-level optimal beam and the channel state information under the MU pairing beam without increasing the reference signal overhead and the measurement complexity of the terminal device, the high MU pairing probability in the cell can be achieved, and the total capacity of the cell is improved.

[0173] Optionally, the channel state information reported by the terminal device includes one or more of the following: the index of one or more reference signal resources, the measurement value of the first type of channel state information corresponding to one or more reference signal resources, the measurement value of the second type of channel state information corresponding to one or more reference signal resources, or the ordering information of one or more reference signal resource indexes, or the ordering information of one or more reference signal resources.

[0174] As a possible implementation, the second channel state information is one or more of the following parameters: the second type of channel state information measurement value of the N reference signal resources in the K reference signal resources, the index value of the N reference signal resources in the K reference signal resources, and the ordering information of the N reference signal resources in the K reference signal resources.

[0175] The following examples 1 to 4 illustrate the content and form of the second channel state information reported by the terminal device.

[0176] Example 1: The second channel state information is the index value of the N reference signal resources in the K reference signal resources.

[0177] For example, the terminal device determines the N reference signal resources from the K parameter channel resources based on one or more of the following criteria.

[0178] Criterion one: the N reference signal resources are N reference signal resources in the K reference signal resources that do not report the first channel state information, and the second type of channel state information measurement value is greater than the second threshold value.

[0179] Criterion two: the N reference signal resources are the N reference signal resources in the K reference signal resources that do not report the first channel state information, and N=K-M.

[0180] Criterion three: the N reference signal resources are N reference signal resources in the K reference signal resources for which the second type of channel state information measurement value is greater than a second threshold value.

[0181] wherein M is a positive integer greater than or equal to 1 and less than K, and the value of M can be configured by the network device to the terminal device, can be a fixed value predefined by a protocol, or can be a value autonomously decided by the terminal device.

[0182] Optionally, the selection manner of the M reference signal resources can be that the terminal device selects the M reference signal resources from the K configured reference signal resources based on the measurement information of the reference signal resources and a specific criterion, for example, the first M reference signal resources with the largest received energy, or the first M reference signal resources with the largest channel capacity, or any other criterion, and reports the first channel state information corresponding to the M reference signal resources.

[0183] As an example, the channel state information measurement reporting configuration in the above step 510 contains K=4 reference signal resources {NZP CSIRS resource#n1, NZP CSIRS resource#n2, NZP CSIRS resource#n3, NZP CSIRS resource#n4} for channel measurement, it is assumed that {X#n1, X#n2, X#n3, X#n4} correspond to the second type of channel state information measurement values (one of RSRP, SINR or RSRQ) of each reference signal resource respectively, and X#n4>X#n2>X#n3>X#n1.

[0184] It should be noted that the sorting of the reference signal resources and the beam measurement values corresponding to the reference signal resources in the above example can also be applicable in the following, and the embodiments of the present application will not be repeated in the following.

[0185] As a possible implementation manner, the M reference signal resources and / or the N reference signal resources are indicated by a bitmap, each bit in the bitmap corresponds to a reference signal resource, and a first value of the bit indicates that the reference signal resource belongs to the M reference signal resources or the N reference signal resources; or, the M reference signal resources and / or the N reference signal resources are indicated by at least one field, each field indicates the index of a reference signal resource; or, the M reference signal resources and / or the N reference signal resources are indicated by one field, and the value of the field indicates the M reference signal resources or the N reference signal resources.

[0186] Scenario 1: the M reference signal resources and / or the N reference signal resources are indicated by the bitmap.

[0187] In the CSI field, a form of {X0, X1, …, Xn} can be used, where each bit corresponds to a reference signal resource, and the bit value of 1 indicates that the corresponding reference signal resource belongs to the M reference signal resources or the N reference signal resources, and the bit value of 0 indicates that the corresponding reference signal resource does not belong to the M reference signal resources or the N reference signal resources.

[0188] For example, in the CSI field, {0, 1, 0, 1} can be used to represent that the M reference signal resources are NZP CSIRS resource#n4 and NZP CSIRS resource#n2.

[0189] In scenario 2, the M reference signal resources and / or the N reference signal resources are indicated by at least one field. For example, in the table of an embodiment of the present application, “11” represents NZP CSIRS resource#n4.

[0190] In scenario 3, the M reference signal resources and / or the N reference signal resources are indicated by one field.

[0191] Optionally, a plurality of combinations of reference signal resources are defined, and each value of the field corresponds to a combination of M reference signal resources or N reference signal resources.

[0192] Suppose M = 1, the first channel state information is the index value of the reference signal resource NZP CSIRS resource#n4 and the first type of channel state information measurement value corresponding to the reference signal resource, and the size of the second threshold is between X#n3 and X#n1, then based on the criterion one of the above example 1, the second channel state information is used to indicate the index value of the reference signal resource NZP CSIRS resource#n2 and the index value of the reference signal resource NZP CSIRS resource#n3.

[0193] Optionally, the terminal device indicates the ordering information of the plurality of reference signal resources through a plurality of fields. For example, the terminal device defines a plurality of fields in the field for reporting the CSI, and the field in the front is used to place the reference signal resource index in the front, and the field in the back is used to place the reference signal resource index in the back, or vice versa.

[0194] As an example, when M=1, the reference signal index of the reported NZP CSI RS resource #n4 is 3, the CRI=3, corresponding to 2-bit field "11", and the first channel state information corresponding to the reported NZP CSI RS resource #n4, the ordering of other reference signal resources is {NZP CSI RS resource #n2, NZP CSI RS resource #n3}, and the format thereof in the channel state information can be as shown in Table 1.

[0195] Table 1

[0196] It should be understood that the content contained in the table of the embodiments of the present application is only as an example for the reader to better understand the technical solutions of the embodiments of the present application, and is not as a limitation on the specific content reported by the terminal device.

[0197] Optionally, the second channel state information indicates the index value of one or more reference signal resources in the form of bitmap, and the format thereof in the channel state information can be as shown in Table 2.

[0198] Table 2

[0199] Example 2, the second channel state information is the ordering information of N reference signal resources in the K reference signal resources.

[0200] For example, the ordering information of the N reference signal resources is determined from the K parameter channel resources based on one or more criteria.

[0201] Criterion one: the K-M reference signal resources in the K reference signal resources for which the first channel state information is not reported are sorted from large to small according to the second type of channel state information measurement values, the indexes of the reference signal resources associated with the first N measurement values in the sorted order are sorted in the same order, and the sorted reference signal resource indexes are used as the second channel state information.

[0202] Criterion two: the K reference signal resources are sorted from large to small according to the second type of channel state information measurement values, the indexes of the reference signal resources associated with the first N measurement values in the sorted order are sorted in the same order, and the sorted reference signal resource indexes are used as the second channel state information.

[0203] As an example, assuming M=1, the first channel state information is the index value of NZP CSIRS resource#n4 and the first type of channel state information measurement value corresponding to this reference signal resource, then based on the above example 2, the second channel state information is used to indicate that the index value of the reference signal resource NZP CSIRS resource#n2 is ranked first, the index value of the reference signal resource NZP CSIRS resource#n3 is ranked second, and the index value of the reference signal resource NZP CSIRS resource#n1 is ranked third.

[0204] Optionally, the second channel state information indicates the index value of one or more reference signal resources in the form of multiple independent fields. Its format in the channel state information can be as shown in the following table.

[0205] Table 3

[0206] Optionally, the terminal device indicates the ordering information of multiple reference signal resources through one field, wherein the number of bits occupied by the field is related to the specific value of K and the value of M. For example, assuming M=2, the first channel state information is the index value of NZP CSIRS resource#n4 and NZP CSIRS resource#n2 and the first type of channel state information measurement value, the terminal device can predefine multiple ordering combinations, and different bit values represent different ordering combinations. Its format in the channel state information can be as shown in the following table.

[0207] Table 4

[0208] As an example, assuming M=1, the first channel state information is the index value of NZP CSIRS resource#n4 and the first type of channel state information measurement value corresponding to this reference signal resource, then based on the above example 2, the second channel state information is used to indicate that the index value of the reference signal resource NZP CSIRS resource#n4 is ranked first, the index value of the reference signal resource NZP CSIRS resource#n2 is ranked second, and the index value of the reference signal resource NZP CSIRS resource#n3 is ranked third.

[0209] Optionally, the second channel state information indicates the index value of one or more reference signal resources in the form of multiple independent fields. Its format in the channel state information can be as shown in the following table.

[0210] Table 5

[0211] Example 3: The second channel state information is the second type channel state information measurement value of N reference signal resources among the K reference signal resources.

[0212] Exemplarily, the second type channel state information measurement value of the N reference signal resources is determined from the K parameter channel resources based on one or more of the following criteria.

[0213] Criterion one: the second type channel state information measurement value of the K-M reference signal resources among the K reference signal resources which do not report the first channel state information is taken as the second channel state information.

[0214] Criterion two: the difference value between the second type channel state information measurement value of the K-M reference signal resources among the K reference signal resources which do not report the first channel state information and the second type channel state information measurement value of a certain reference signal resource of the M reference signal resources which report the first channel state information is taken as the second channel state information.

[0215] Criterion three: the maximum value of the second type channel state information measurement value of the K-M reference signal resources among the K reference signal resources which do not report the first channel state information and the difference value between the second type channel state information measurement value of the K-M-1 reference signal resources and the maximum value is taken as the second channel state information.

[0216] Criterion four: the difference value between the second type channel state information measurement value X1 of a certain reference signal resource of the K reference signal resources which report the first channel state information and the second type channel state information measurement value of the K-M reference signal resources which do not report the first channel state information is taken as the second channel state information.

[0217] As an example, the terminal device reports the first channel state information of the NZP CSIRS resource#n4 reference signal resource, at this time, based on criterion one of example 3, the terminal device can also report the second type channel state information measurement value of the remaining 3 reference signal resources, i.e. the second type channel state information measurement value corresponding to the CSIRS resource#n1, NZP CSIRS resource#n2 and NZP CSIRS resource#n3 reference signal resources, as the second channel state information. Optionally, the field occupied by the above-mentioned second type channel state information measurement value can be ordered from small to large according to the reference signal resource index, and one possible example is shown in Table 5.

[0218] Table 6

[0219] As an example, the terminal device reports the first channel state information of the NZP CSIRS resource #n4 reference signal resource, and based on the criterion one of example 3, the terminal device further reports the second channel state information of the second type channel state information measurement values corresponding to the remaining 3 reference signal resources, i.e., the NZP CSIRS resource #n1, the NZP CSIRS resource #n2 and the NZP CSIRS resource #n3. Optionally, the field ordering occupied by the reporting information of the reference signal resources associated with the second channel state information can be ordered from large to small according to the second type channel state information measurement values. Another possible example is shown in Table 6.

[0220] Table 7

[0221] As an example, the terminal device reports the first channel state information of the NZP CSIRS resource #n4 reference signal resource, and based on the criterion one of example 3, the terminal device further reports the second channel state information of the second type channel state information measurement values corresponding to the remaining 3 reference signal resources, i.e., the NZP CSIRS resource #n1, the NZP CSIRS resource #n2 and the NZP CSIRS resource #n3. Optionally, the field ordering occupied by the reporting information of the reference signal resources associated with the second channel state information can be ordered from large to small according to the second type channel state information measurement values. Another possible example is shown in Table 6.

[0222] Table 8

[0223] It should be noted that in the embodiments of the present application, the measurement value in the second channel state information is an absolute value and / or a difference value of the measurement value, and the difference value is the difference between the measurement value and the reference measurement value, wherein the measurement value is one or more of the following: RSRP, SINR, RSRQ.

[0224] As a possible implementation, the measurement value is the measurement value associated with the first reference signal resource, the first reference signal resource is the reference signal resource with the largest second type channel state information measurement value in the N reference signal resources, and the reference measurement value is the measurement value associated with the second reference signal resource, the second reference signal resource is the reference signal resource with the largest second type channel state information measurement value in the N reference signal resources.

[0225] As an example, the terminal device reports the first channel state information of the NZP CSIRS resource#n4 reference signal resource, and based on the criterion three of example 3, the terminal device takes the second channel state information measurement value X#2 of the NZP CSIRS resource#n2, the difference value between the second channel state information measurement value corresponding to the NZP CSIRS resource#n1 and the NZP CSIRS resource#n3 and the second channel state information of the NZP CSIRS resource#n2 as the second channel state information. Optionally, the field occupied by the reporting information of the reference signal resource associated with the second channel state information can be sorted in ascending order of the reference signal resource index, and the second channel state information of the reference signal resource with a smaller index is arranged before the second channel state information of the reference signal resource with a larger index. For a possible example, please refer to the following table.

[0226] Table 9

[0227] As another possible implementation, the measurement value is a measurement value associated with a first reference signal resource, the first reference signal resource belongs to the M reference signal resources, and the reference measurement value is a measurement value associated with a second reference signal resource, the second reference signal resource belongs to the M reference signal resources.

[0228] As an example, the terminal device reports the first channel state information of the NZP CSIRS resource#n4 reference signal resource, and based on the criterion three of example 3, the terminal device takes the second channel state information measurement value X#2 of the NZP CSIRS resource#n2, the difference value between the second channel state information measurement value corresponding to the NZP CSIRS resource#n1 and the NZP CSIRS resource#n3 and the second channel state information of the NZP CSIRS resource#n4 as the second channel state information. Optionally, the field occupied by the reporting information of the reference signal resource associated with the second channel state information can be sorted in ascending order of the reference signal resource index, and the second channel state information of the reference signal resource with a smaller index is arranged before the second channel state information of the reference signal resource with a larger index. For a possible example, please refer to the following table.

[0229] Table 10

[0230] Example 4: the second channel state information is the index value of at least one reference signal resource of the N reference signal resources of the K reference signal resources and the second type channel state information measurement value of the at least one reference signal resource.

[0231] Exemplarily, the index value of at least one reference signal resource of the N reference signal resources and the second type channel state information measurement value of the at least one reference signal resource are determined from the K parameter channel resources based on one or more of the following criteria.

[0232] Criterion one: the reference signal resource index of the maximum value of the second type channel state information measurement value in the K-M reference signal resources of the K reference signal resources which do not report the first channel state information, the maximum value of the second type channel state information measurement value, and the difference value of the second type channel state information measurement value of the K-M-1 reference signal resources and the maximum value are the second channel state information.

[0233] Criterion two: the index value of the first N reference signal resources in the K-M reference signal resources of the K reference signal resources which do not report the first channel state information in descending order of the second type channel state information measurement value and the corresponding second type channel state information measurement value.

[0234] As an example, the terminal device reports the first channel state information of the reference signal resource NZP CSIRS resource#n4, based on criterion one of example 4, the terminal device takes the resource index value of NZP CSIRS resource#n2, the second type channel state information measurement value X#2 of the reference signal resource NZP CSIRS resource#n2, the difference value of the second type channel state information measurement value corresponding to NZP CSIRS resource#n3 and NZP CSIRS resource#n1 and the second type channel state information of NZP CSIRS resource#n2 as the second channel state information. Optionally, the reporting information of the reference signal resource associated with the second channel state information can be sorted in ascending order of the reference signal resource index, and the second channel state information of the reference signal resource with a smaller index is arranged before the second channel state information of the reference signal resource with a larger index. For a possible example, please refer to the following table.

[0235] Table 11

[0236] As an example, the terminal device reports the first channel state information of the NZP CSIRS resource #n4 reference signal resource, and based on the second criterion of Example 4, the terminal device sorts the index values of the reference signal resources {NZP CSIRS resource #n2, NZP CSIRS resource #n3, NZP CSIRS resource #n1} and the corresponding second type of channel state information measurement values in descending order of the second type of channel state information measurement values, and takes the sorted result as the second channel state information. For a possible example, see the following table.

[0237] Table 12

[0238] As an example, the terminal device reports the first channel state information of the NZP CSIRS resource #n4 reference signal resource, and based on the second criterion of Example 4, the terminal device sorts the index values of the reference signal resources {NZP CSIRS resource #n2, NZP CSIRS resource #n3, NZP CSIRS resource #n1} and the corresponding second type of channel state information measurement values in descending order of the second type of channel state information measurement values, and takes the sorted result as the second channel state information. For a possible example, see the following table.

[0239] Table 13

[0240] As a possible implementation, the network device decides the high-probability scheduling beam of the subsequent time slot based on the channel state information report described above, taking into account the scheduling requirements of all users in the current cell, and triggers the non-periodic channel state information measurement report of the scheduling beam. The terminal device only reports the first channel state information of the scheduling beam, and the network device selects the scheduling user and weight, and makes the MCS decision for MU scheduling based on the reported first channel state information.

[0241] It can be understood that in the embodiments of the present application, the interaction between the terminal device and the network device is mainly taken as an example for illustrative description, and the present application is not limited thereto. The terminal device can be replaced by a receiving end device, and the receiving end device can be a terminal device or a network device. The network device can be replaced by a sending end device, and the sending end device can be a terminal device or a network device.

[0242] It can also be understood that some optional features in the embodiments of the present application can not depend on other features in some scenarios, or can be combined with other features in some scenarios, and are not limited thereto.

[0243] It can also be understood that the solutions in the embodiments of the present application can be reasonably combined for use, and the explanation or description of each term appearing in the embodiments can be mutually referenced or explained in various embodiments, and no limitation is made.

[0244] It can also be understood that the methods and operations implemented by the devices (such as terminal devices and network devices) in each of the above method embodiments can also be implemented by components (such as chips or circuits) of the devices, and no limitation is made.

[0245] The above describes the method provided by the embodiments of the present application in detail in combination with FIG. 5. In the following, the apparatus provided by the embodiments of the present application is described in detail in combination with FIG. 6 to FIG. 8. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the method embodiments described above, and is not described here for brevity.

[0246] Referring to FIG. 6, FIG. 6 is a schematic diagram of a communication apparatus 600 provided by an embodiment of the present application. The apparatus 600 includes a transceiver unit 610. The transceiver unit 610 can be used to implement corresponding communication functions. The transceiver unit 610 can also be referred to as a communication interface or a communication unit. The apparatus 600 further includes a processing unit 620. The processing unit 620 can be used for processing, such as measuring K reference signal resources. The functions of the processing unit 620 can be implemented by one or more processors. Specifically, the processor can include a modem chip, or a system on chip (SoC) chip or a SIP chip containing a modem core.

[0247] Optionally, the apparatus 600 can further include a storage unit, which can be used to store instructions and / or data. The processing unit 620 can read the instructions and / or data in the storage unit, so that the apparatus implements the foregoing method embodiments.

[0248] Optionally, the transceiver unit 610 can include a receiving unit and a sending unit. The receiving unit can be used to perform receiving related operations (such as operations of receiving data or messages), and the sending unit can be used to perform sending related operations (such as operations of sending data or messages).

[0249] In a first possible design, the apparatus 600 can be a terminal device in the foregoing embodiments, and the apparatus 600 can implement steps or procedures corresponding to those performed by the terminal device in the method embodiments. The transceiver 610 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of the terminal device in the method embodiments, e.g., the transceiver 610 can be configured to perform steps 510 and 530 in the embodiment of FIG. 5. The processor 620 can be configured to perform operations related to processing of the terminal device in the method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages), e.g., the processor 620 can be configured to perform step 520 in the embodiment of FIG. 5.

[0250] In a possible implementation, the transceiver 610 is configured to receive the reference signals through the K reference signal resources, where K is an integer greater than 1; and the transceiver 610 is further configured to transmit the first channel state information and the second channel state information.

[0251] In a second possible design, the apparatus 600 can be a network device in the foregoing embodiments, and the apparatus 600 can implement steps or procedures corresponding to those performed by the network device in the method embodiments. The transceiver 610 can be configured to perform operations related to transceiving (e.g., operations of transmitting and / or receiving data or messages) of the network device in the method embodiments, e.g., the transceiver 610 can be configured to perform steps 510, 520, and 540 in the embodiment of FIG. 5. The processor 620 can be configured to perform operations related to processing of the network device in the method embodiments, or operations other than transceiving (e.g., operations other than transmitting and / or receiving data or messages).

[0252] In a possible implementation, the transceiver 610 is configured to transmit the reference signals through the K reference signal resources, where K is an integer greater than 1; and the transceiver 610 is further configured to receive the first channel state information and the second channel state information.

[0253] It is understood that the specific procedures by which the various units perform the corresponding steps described above have been described in detail in the method embodiments, and thus are not described herein again for brevity.

[0254] It should also be understood that the apparatus 600 herein is embodied in the form of a functional block diagram. The term "unit" herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor, or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combination of logical circuit and / or other suitable components supporting the described functions. In an optional example, those skilled in the art can understand that the apparatus 600 can be embodied as a communication device in the above-mentioned embodiments, and can be used to execute the processes and / or steps corresponding to the communication device in the above-mentioned method embodiments. To avoid repetition, details are not described here.

[0255] The apparatus 600 of each of the above-mentioned schemes has a function of implementing the corresponding steps performed by the communication device in the above-mentioned methods. The function can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor, which respectively performs the transceiving operations and related processing operations in each of the method embodiments.

[0256] In addition, the transceiver unit 610 described above can also be a transceiver circuit (for example, which can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit.

[0257] It should be noted that the apparatus in FIG. 6 can be a communication device in the above-mentioned embodiments, or a chip or a chip system, for example, a system on chip (SoC). The transceiver unit can be an input / output circuit, a communication interface; and the processing unit can be a processor or a microprocessor integrated on the chip or an integrated circuit. Here, no limitation is made.

[0258] Referring to FIG. 7, FIG. 7 is a schematic diagram of another communication apparatus 700 provided by the embodiments of the present application. The apparatus 700 includes a processor 710, and the processor 710 is coupled with a memory 720, the memory 720 is used to store computer programs or instructions and / or data, and the processor 710 is used to execute the computer programs or instructions stored in the memory 720, or read the data stored in the memory 720, to execute the methods in the above-mentioned method embodiments.

[0259] Optionally, the processor 710 is one or more.

[0260] Optionally, the memory 720 is one or more.

[0261] Optionally, the memory 720 is integrated with the processor 710, or is separately arranged.

[0262] Optionally, as shown in FIG. 7, the apparatus 700 further includes a transceiver 730 for receiving and / or sending signals. For example, the processor 710 is configured to control the transceiver 730 to receive and / or send signals.

[0263] For example, the processor 710 can have the functions of the processing unit 620 shown in FIG. 6, the memory 720 can have the functions of a storage unit, and the transceiver 730 can have the functions of the transceiving unit 610 shown in FIG. 6.

[0264] As an example, the apparatus 700 is configured to implement operations performed by a communication apparatus in the various method embodiments.

[0265] For example, the processor 710 is configured to execute computer programs or instructions stored in the memory 720 to implement the related operations of a terminal device or a network device in the various method embodiments.

[0266] It should be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0267] It should also be understood that the memory mentioned in the embodiments of the present application can be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM). For example, the RAM can be used as an external cache. As an example but not limitation, the RAM includes the following various forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0268] It should be noted that when the processor is a general processor, a DSP, an ASIC, a FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, the memory (storage module) can be integrated in the processor.

[0269] It should also be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0270] Referring to FIG. 8, FIG. 8 is a schematic diagram of a chip system 800 provided by an embodiment of the present application. The chip system 800 (or also can be called a processing system) includes a logic circuit 810 and an input / output interface 820.

[0271] The logic circuit 810 can be a processing circuit in the chip system 800. The logic circuit 810 can be coupled to a storage unit, and invoke instructions in the storage unit, so that the chip system 800 can implement the methods and functions of the embodiments of the present application. The input / output interface 820 can be an input / output circuit in the chip system 800, and output information processed by the chip system 800, or input data or signaling information to be processed by the chip system 800.

[0272] Optionally, the logic circuit 810 can be implemented by one or more processors, including the one or more processors or processing portions in the one or more processors.

[0273] Optionally, the input / output interface 820 can include a transceiver, a transceiver, an input / output circuit or a communication interface.

[0274] As an option, the chip system 800 is configured to implement operations performed by a communication device (e.g., a terminal device, or a network device) in the above various method embodiments.

[0275] For example, the logic circuit 810 is configured to implement processing-related operations performed by a communication device (e.g., a terminal device, or a network device) in the above method embodiments; and the input / output interface 820 is configured to implement sending and / or receiving-related operations performed by a communication device (e.g., a terminal device, or a network device) in the above method embodiments.

[0276] The embodiments of the present application also provide a computer readable storage medium having stored thereon computer instructions for implementing the method performed by a communication device (e.g., a terminal device, or a network device) in the above various method embodiments.

[0277] For example, the computer program is executed by a computer, so that the computer can implement the method performed by a communication device (e.g., a terminal device, or a network device) in the above method embodiments.

[0278] The embodiments of the present application also provide a computer program product comprising instructions, which, when executed by a computer, implement the method performed by a communication device (e.g., a terminal device, or a network device) in the above various method embodiments.

[0279] The embodiments of the present application also provide a communication system, which includes the terminal device and / or the network device in the above embodiments. For example, the system includes the terminal device and the network device in FIG. 5.

[0280] The explanations and beneficial effects of the related contents in any of the above devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0281] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. For example, the described apparatus embodiments are merely schematic. The division of the units is merely logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0282] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, the computer instructions generate the processes or functions according to the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. For example, the computer can be a personal computer, a server or a network device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc.). For example, the foregoing available medium includes but is not limited to: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic or optical disk, etc. various media that can store program codes.

[0283] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: Comprising: receiving reference signals through K reference signal resources, K being an integer greater than 1; measuring the K reference signal resources to determine first channel state information and second channel state information, the first channel state information comprising at least one of the following: rank indication (RI), precoding matrix indication (PMI), channel quality indication (CQI); the second channel state information comprising at least one of the following: at least one reference signal resource index, reference signal received power (RSRP), reference signal received signal-to-interference-and-noise ratio (SINR), reference signal received quality (RSRQ); sending the first channel state information and the second channel state information.

2. The method of claim 1, wherein, The first channel state information is: first channel state information of M reference signal resources in the K reference signal resources, the M reference signal resources satisfying a first condition, M being a positive integer, the first condition being one or more of the following: M reference signal resources in the K reference signal resources with a first measurement value greater than or equal to a first threshold value; or the first M reference signal resources in the K reference signal resources sorted in descending order of the first measurement value.

3. The method of claim 2, wherein, The second channel state information is: second channel state information of N reference signal resources in the K reference signal resources, the N reference signal resources satisfying a second condition, N being a positive integer, the second condition being one or more of the following: N reference signal resources in the K reference signal resources for which the first channel state information is not reported; or the first N reference signal resources in the K reference signal resources sorted in descending order of a second measurement value; or N reference signal resources in the K reference signal resources with the second measurement value greater than or equal to a second threshold value.

4. The method of claim 3, wherein, The first measurement value or the second measurement value is one or more of the following: channel capacity, reference signal received power (RSRP), reference signal received signal-to-interference-and-noise ratio (SINR), reference signal received quality (RSRQ).

5. The method according to claim 3 or 4, characterized in that, Further comprising: receiving configuration information, the configuration information including a value of the first threshold value and / or the second threshold value.

6. The method of claim 3 or 4, wherein the M reference signal resources and / or the N reference signal resources are indicated by a bitmap, each bit in the bitmap corresponding to a reference signal resource, and a bit value of a first value indicating that the reference signal resource belongs to the M reference signal resources or the N reference signal resources; or the M reference signal resources and / or the N reference signal resources are indicated by at least one field, each field indicating an index of a reference signal resource; or the M reference signal resources and / or the N reference signal resources are indicated by one field, a value of the field indicating the M reference signal resources or the N reference signal resources.

7. The method of any one of claims 3 to 6, wherein The measurement value in the second channel state information is an absolute value of the measurement value and / or a difference value between the measurement value and a reference measurement value, wherein the measurement value is one or more of RSRP, SINR, and RSRQ.

8. The method of claim 7, wherein, The measurement value is a measurement value associated with a first reference signal resource, and the first reference signal resource belongs to the M reference signal resources, or the first reference signal resource is a reference signal resource with the largest second measurement value among the N reference signal resources.

9. The method according to claim 7 or 8, characterized in that, The reference measurement value is a measurement value associated with a second reference signal resource, and the second reference signal resource belongs to the M reference signal resources, or the second reference signal resource is a reference signal resource with the largest second measurement value among the N reference signal resources.

10. The method according to any one of claims 1 to 9, characterized in that, The first channel state information occupies a bit field more important than a bit field occupied by the second channel state information.

11. A communication method, comprising: Comprise: transmitting a reference signal through K reference signal resources, K being an integer greater than 1; receiving first channel state information and second channel state information, the first channel state information and the second channel state information being determined by measuring the K reference signal resources, the first channel state information comprising at least one of the following: rank indication (RI), precoding matrix indicator (PMI), and channel quality indicator (CQI); and the second channel state information comprising at least one of the following: at least one reference signal resource index, reference signal received power (RSRP), reference signal received signal-to-interference-and-noise ratio (SINR), and reference signal received quality (RSRQ).

12. The method of claim 11, wherein, The first channel state information is: first channel state information of M reference signal resources in the K reference signal resources, the M reference signal resources satisfying a first condition, M being a positive integer, and the first condition being one or more of the following: M reference signal resources in the K reference signal resources with a first measurement value greater than or equal to a first threshold value; or The first M reference signal resources in the K reference signal resources are sorted in descending order of the first measurement value.

13. The method of claim 12, wherein, The second channel state information is: second channel state information of N reference signal resources in the K reference signal resources, the N reference signal resources satisfying a second condition, N being a positive integer, and the second condition being one or more of the following: N reference signal resources in the K reference signal resources for which the first channel state information is not reported; or The first M reference signal resources in the K reference signal resources are sorted in descending order of the first measurement value. N reference signal resources in the K reference signal resources with a second measurement value greater than or equal to a second threshold value.

14. The method of claim 13, wherein, The first measurement value or the second measurement value is one or more of the following: channel capacity, reference signal received power (RSRP), reference signal received signal-to-interference-and-noise ratio (SINR), and reference signal received quality (RSRQ).

15. The method according to claim 13 or 14, characterized in that, Also include: transmitting configuration information, the configuration information including a value of the first threshold value and / or the second threshold value.

16. The method of claim 13 or 14, wherein The M reference signal resources and / or the N reference signal resources are indicated by a bitmap, each bit in the bitmap corresponds to a reference signal resource, and a bit value of a first value indicates that the reference signal resource belongs to the M reference signal resources or the N reference signal resources. The M reference signal resources and / or the N reference signal resources are indicated by at least one field, each field indicates an index of one of the reference signal resources. The M reference signal resources and / or the N reference signal resources are indicated by one field, and a value of the field indicates the M reference signal resources or the N reference signal resources.

17. The method of any one of claims 13-16, wherein: The measurement value in the second channel state information is an absolute value of the measurement value and / or a difference value, the difference value is a difference between the measurement value and a reference measurement value, and the measurement value is one or more of RSRP, SINR, and RSRQ. The measurement value is a measurement value associated with a first reference signal resource, the first reference signal resource belongs to the M reference signal resources, or the first reference signal resource is a reference signal resource with the largest second measurement value in the N reference signal resources.

18. The method of claim 17, wherein, The reference measurement value is a measurement value associated with a second reference signal resource, the second reference signal resource belongs to the M reference signal resources, or the second reference signal resource is a reference signal resource with the largest second measurement value in the N reference signal resources.

19. The method of claim 17 or 18, wherein, The first channel state information occupies a bit field that is more important than a bit field occupied by the second channel state information.

20. The method of any one of claims 11 to 19, wherein, The communication device is configured to perform the method of any one of claims 1-10 or 11-20.

21. A communications device, characterized by The communication device includes at least one processor configured to cause the communication device to perform the method of any one of claims 1-10 or the method of any one of claims 11-20.

22. A communications device, characterized by The computer readable storage medium stores a computer program or instructions, when the computer program or instructions are run on a computer, the method of any one of claims 1-10 is performed, or the method of any one of claims 11-20 is performed.

23. A computer-readable storage medium, characterized in that, When the computer program product is run on a computer, the method of any one of claims 1-10 is performed, or the method of any one of claims 11-20 is performed.

24. A computer program product, characterised in that, The chip includes a processor and a communication interface, the processor reads instructions on a memory through the communication interface, and performs the method of any one of claims 1-10 or the method of any one of claims 11-20.

25. A chip, characterized by ​

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