Method and device for reporting channel state information

Abstract

The invention provides a method and a device for reporting channel state information, relates to the field of communication, and can improve the accuracy of channel measurement. The method comprises: receiving first information from a network device, the first information being used for configuring K reference signal resources, K being greater than 1; s pieces of CSI are sent to the network device, the S pieces of CSI are obtained by performing channel measurement through S reference signal resources, and the S reference signal resources belong to the K reference signal resources.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for reporting channel state information. Background Art

[0002] MIMO technology uses multiple transmit and receive antennas in network devices and multiple receive antennas in terminal devices, respectively, to provide high data rates through a multi-layer parallel transmission mode. When using MIMO technology, network devices must precode data before sending it to terminal devices. This precoding relies on channel state information (CSI). CSI represents the channel properties of the communication link, and the accuracy of CSI obtained by network devices largely determines the performance of the MIMO system.

[0003] However, as network equipment adopts a larger number of physical antennas, if the reference signal resources with the original number of reference signal ports are used for channel detection, it may lead to poor channel measurement accuracy, affecting the accuracy of CSI, and thus affecting the transmission efficiency of business data.

[0004] Therefore, there is an urgent need to provide a method to improve the accuracy of channel measurement and thus improve the transmission efficiency of service data. Summary of the Invention

[0005] The present application provides a method and apparatus for reporting channel state information, which can improve the accuracy of channel measurement and thereby improve the transmission efficiency of service data.

[0006] In a first aspect, a method for reporting channel state information is provided, the method comprising: receiving first information from a network device, the first information being used to configure K reference signal resources, where K is greater than 1; and sending S CSIs to the network device, where the S CSIs are obtained by performing channel measurement using the S reference signal resources, the S reference signal resources belonging to the K reference signal resources. S may be less than or equal to K.

[0007] In the CSI reporting method of the present application, the network device configures multiple reference signal resources for the terminal device, the terminal device uses the multiple reference signal resources to perform channel measurement, and reports all or part of the CSI in the multiple CSIs to the network device. In this way, compared to the case where the network device configures a reference signal resource including more reference signal ports for the terminal device, the terminal device uses multiple reference signal resources to perform channel measurement over a larger area, which helps to improve the accuracy of the channel measurement, thereby improving the transmission efficiency of the service data, and thus more effectively obtaining the performance gain of the large antenna array. In addition, when the terminal device reports part of the CSI in the multiple CSIs, the signaling overhead of the CSI report is relatively small.

[0008] With reference to the first aspect, in certain implementations of the first aspect, each of the K reference signal resources includes P reference signal ports, where P≤32.

[0009] Optionally, K and P may satisfy: K×P>32. For example, K×P may be 64 or 128.

[0010] The current protocol specifies that the codebook supports a maximum of 32 antenna ports. With this solution, the K reference signal resources include more than 32 reference signal ports, K×P. This allows for higher channel measurement accuracy for network devices using large-scale antenna arrays without introducing a new codebook with more than 32 antenna ports.

[0011] With reference to the first aspect, in certain implementations of the first aspect, the K reference signal resources use the same reference signal port configuration, where the reference signal port configuration includes a first number of reference signal ports and a second number of reference signal ports.

[0012] In this way, the coverage area of the beams used by the reference signal ports of the K reference signal resources can be larger, thereby increasing the area range of channel measurement and further improving the accuracy of channel measurement.

[0013] Optionally, the first number of reference signal ports is the number of reference signal ports in a horizontal dimension in the same polarization direction, and the second number of reference signal ports is the number of reference signal ports in a vertical dimension in the same polarization direction.

[0014] It should be understood that the number of the first reference signal ports can also be represented by N1, the number of the second reference signal ports can also be represented by N2, and the reference signal port configuration can also be represented by (N1, N2).

[0015] In combination with the first aspect, in certain implementations of the first aspect, the P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, and the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, where the different beams include: beams with different beam directions and / or beams with different beam widths.

[0016] The same beam can be understood as a beam with the same beam width and beam direction. The beams used by the P reference signal ports included in each reference signal resource are beams with the same beam width and beam direction.

[0017] In combination with the first aspect, in some implementations of the first aspect, the different beams are orthogonal beams.

[0018] This helps improve the accuracy of channel measurement by reducing interference between different beams.

[0019] With reference to the first aspect, in certain implementations of the first aspect, each of the P reference signal ports corresponds to multiple physical antennas, and the multiple physical antennas have the same polarization direction.

[0020] In this way, by mapping one reference signal port to multiple physical antennas with the same polarization direction, the beam used by the one reference signal port can be transmitted over a longer distance.

[0021] With reference to the first aspect, in certain implementations of the first aspect, the P reference signal ports of the K reference signal resources are quasi-co-located.

[0022] In this way, beams used by the P reference signal ports of the K reference signal resources can be transmitted through the same antenna array or the same network device.

[0023] With reference to the first aspect, in certain implementations of the first aspect, the S CSIs are the CSIs with the highest spectral efficiency among the K CSIs.

[0024] In this way, the network device can send downlink information based on the CSI with the highest spectrum efficiency, thereby improving the efficiency of the network device in sending downlink information.

[0025] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: sending second information to the network device, the second information being used to indicate S reference signal resources, where the S reference signal resources are reference signal resources corresponding to the S CSIs among the K reference signal resources.

[0026] In this way, the network device can determine which reference signal resources are used to perform channel measurement to obtain the S CSIs.

[0027] In conjunction with the first aspect, in certain implementations of the first aspect, the second information includes indexes of the S reference signal resources. In this way, the network device can determine the S reference signal resources by index.

[0028] In conjunction with the first aspect, in certain implementations of the first aspect, S is agreed upon by a protocol or configured by a network device through signaling. In this way, the terminal device can determine the amount of CSI to be reported.

[0029] On the second aspect, another method for reporting channel state information is provided, the method including: sending first information to a terminal device, the first information being used to configure K reference signal resources, where K is greater than 1; receiving S channel state information CSI from the terminal device, the S CSI being obtained by performing channel measurement using S reference signal resources respectively, and the S reference signal resources belonging to the K reference signal resources.

[0030] With reference to the second aspect, in certain implementations of the second aspect, each of the K reference signal resources includes P reference signal ports, where P≤32.

[0031] In combination with the second aspect, in certain implementations of the second aspect, the K reference signal resources use the same reference signal port configuration, and the reference signal port configuration includes a first reference signal port number and a second reference signal port number.

[0032] Optionally, the first number of reference signal ports is the number of reference signal ports in a horizontal dimension in the same polarization direction, and the second number of reference signal ports is the number of reference signal ports in a vertical dimension in the same polarization direction.

[0033] In combination with the second aspect, in certain implementations of the second aspect, the P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, and the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, and the different beams include: beams with different beam directions and / or beams with different beam widths.

[0034] In combination with the second aspect, in some implementations of the second aspect, the different beams are orthogonal beams.

[0035] With reference to the second aspect, in certain implementations of the second aspect, each of the P reference signal ports corresponds to multiple physical antennas, and the polarization directions of the multiple physical antennas are the same.

[0036] With reference to the second aspect, in certain implementations of the second aspect, the P reference signal ports of the K reference signal resources are quasi-co-located.

[0037] With reference to the second aspect, in certain implementations of the second aspect, the S CSIs are the CSIs with the highest spectral efficiency among the K CSIs.

[0038] In combination with the second aspect, in certain implementations of the second aspect, the method further includes: receiving second information from a terminal device, the second information being used to indicate S reference signal resources, where the S reference signal resources are reference signal resources corresponding to the S CSIs among the K reference signal resources.

[0039] In combination with the second aspect, in some implementations of the second aspect, the second information includes indexes of S reference signal resources.

[0040] In combination with the second aspect, in certain implementations of the second aspect, S is agreed upon in a protocol or configured by the network device through signaling.

[0041] In a third aspect, a reporting device is provided, configured to execute the method in any possible implementation of the first aspect. Specifically, the device includes a module configured to execute the method in any possible implementation of the first aspect.

[0042] In a fourth aspect, another reporting device is provided, configured to execute the method in any possible implementation of the second aspect. Specifically, the device includes a module configured to execute the method in any possible implementation of the second aspect.

[0043] In a fifth aspect, the present application provides another reporting device, comprising a processor coupled to a memory and configured to execute instructions in the memory to implement the method of any possible implementation of the first or second aspect described above. Optionally, the device further comprises a memory. Optionally, the device further comprises a communication interface, the processor coupled to the communication interface.

[0044] In one implementation, the apparatus is a terminal device (or a network device). When the apparatus is a terminal device (or a network device), the communication interface may be a transceiver, or an input / output interface.

[0045] In another implementation, the device is a chip configured in a terminal device (or a network device). When the device is a chip configured in a terminal device (or a network device), the communication interface may be an input / output interface.

[0046] In a sixth aspect, a processor is provided, comprising: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method of any possible implementation of the first or second aspect.

[0047] In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, or various logic circuits. The input signal received by the input circuit may be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter. The input circuit and the output circuit may be the same circuit, which functions as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation of the processor and various circuits.

[0048] In a seventh aspect, a processing device is provided, comprising a processor and a memory. The processor is configured to read instructions stored in the memory and receive signals via a receiver and transmit signals via a transmitter to execute the method of any possible implementation of the first or second aspect.

[0049] Optionally, there are one or more processors and one or more memories.

[0050] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0051] In the specific implementation process, the memory can be a non-transitory memory, such as a read-only memory (ROM), which can be integrated with the processor on the same chip or set on different chips. This application does not limit the type of memory and the setting method of the memory and the processor.

[0052] It should be understood that related data interaction processes, such as sending indication information, can be processes for outputting indication information from a processor, and receiving capability information can be processes for receiving input capability information from a processor. Specifically, the output data of the processor can be output to a transmitter, and the input data received by the processor can come from a receiver. The transmitter and receiver can be collectively referred to as a transceiver.

[0053] The processing device in the seventh aspect mentioned above can be a chip. The processor can be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, which is implemented by reading the software code stored in the memory. The memory can be integrated in the processor or can be located outside the processor and exist independently.

[0054] In an eighth aspect, a computer program product is provided, comprising: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute a method in any possible implementation of the first or second aspect.

[0055] In the ninth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions) which, when run on a computer, enables the computer to execute the method in any possible implementation of the first or second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 A schematic diagram of a communication system provided in an embodiment of the present application;

[0057] Figure 2 A schematic diagram of coverage and beam width provided in an embodiment of the present application;

[0058] Figure 3 A schematic diagram of beam width and coverage provided in an embodiment of the present application;

[0059] Figure 4 A flow chart of a method for reporting channel state information provided in an embodiment of the present application;

[0060] Figure 5 A schematic diagram of the coverage of different beams provided in an embodiment of the present application;

[0061] Figure 6 A schematic diagram of a reference signal port configuration provided in an embodiment of the present application;

[0062] Figure 7 A schematic diagram of another reference signal port configuration provided in an embodiment of the present application;

[0063] Figure 8 A schematic diagram of another coverage range of different beams provided in an embodiment of the present application;

[0064] Figure 9 A schematic diagram of beams with different beam directions provided in an embodiment of the present application;

[0065] Figure 10 A schematic block diagram of a channel state information reporting device provided in an embodiment of the present application;

[0066] Figure 11 A schematic block diagram of another channel state information reporting device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] The technical solutions in the present application will be described below in conjunction with the accompanying drawings.

[0068] In the embodiments of the present application, terms such as "first" and "second" are used to distinguish identical or similar items with basically the same functions and roles. For example, the first numerical value and the second numerical value are only used to distinguish different numerical values, and do not limit their order. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order, and terms such as "first" and "second" do not necessarily limit them to be different.

[0069] It should be noted that in the embodiments of the present application, words such as "exemplarily" or "for example" are used to give examples, illustrations or explanations. Any embodiment or design solution described as "exemplarily" or "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplarily" or "for example" is intended to present relevant concepts in a specific manner.

[0070] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one (item)" or its similar expression refers to any combination of these items, including any combination of single item (item) or plural items (items). For example, at least one (item) of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple.

[0071] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), world-wide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR), future evolved communication systems, such as sixth generation (6G) system, etc.

[0072] The terminal device in the embodiments of the present application may also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

[0073] The terminal device may be a device that provides voice / data connectivity to users, such as a handheld device or vehicle-mounted device with wireless connection function. At present, some examples of terminal devices include: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (PLMNs). The present application does not limit the terminal equipment in the network (PLMN), etc.

[0074] By way of example and not limitation, in this application, a terminal device may be a terminal device in an Internet of Things (IoT) system. The IoT is an important component of the future development of information technology. Its main technical feature is connecting objects to the Internet through communication technologies, thereby realizing an intelligent network that interconnects humans and machines, and things and things. For example, the terminal device in the embodiments of this application may be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for wearable devices that apply wearable technology to intelligently design and develop wearable devices, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that can be worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices; they can also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are fully functional, large in size, and can achieve full or partial functions independently of smartphones, such as smart watches or smart glasses, as well as those that focus on a specific application function and require cooperation with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0075] As an example and not a limitation, in an embodiment of the present application, the terminal device may also be a terminal device in a machine type communication (MTC). In addition, the terminal device may also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle may implement the method provided in the present application through the built-in on-board module, on-board module, on-board component, on-board chip or on-board unit. Therefore, the embodiment of the present application may also be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution-vehicle (LTE-V), vehicle-to-vehicle (V2V) technology, etc.

[0076] The network device involved in this application can be a device that communicates with a terminal device. The network device can also be called an access network device or a wireless access network device. It can be a transmission reception point (TRP), an evolved NodeB (eNB or eNodeB) in an LTE system, a home base station (for example, home evolved NodeB, or home Node B, HNB), a base band unit (BBU), or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network, or a network device in a future evolved PLMN network, etc. It can also be an access point (AP) in a WLAN, or a gNB in an NR system. The above-mentioned network devices can also be urban base stations, micro base stations, pico base stations, femto base stations, etc., and this application does not limit this.

[0077] To facilitate understanding, some technical terms involved in this application are first introduced.

[0078] 1. Antenna ports: These can be understood as logical ports or virtual ports. Network devices can perform multi-antenna precoding on downlink codewords and map the codewords to multiple antenna ports. The number of these multiple antenna ports can differ from the number of physical antennas on the network device.

[0079] 2. Physical antenna: This can be understood as a transmitting antenna that is recognized by a receiving device, or a receiving antenna that can be recognized by a transmitting device; or, a transmitting antenna or receiving antenna that can be distinguished in space, which can be referred to as a physical antenna.

[0080] 3. Reference signal: A downlink reference signal sent by a network device to a terminal device. After receiving the reference signal, the terminal device can perform channel measurement based on the reference signal and report the CSI determined by the channel measurement to the network device so that the network device can determine the channel environment based on the CSI.

[0081] 4. Reference signal port: can be used to carry reference signal resources. Each reference signal port corresponds to a reference signal resource; a reference signal resource can correspond to multiple reference signal ports. Different reference signal ports can be multiplexed through code division, frequency division, time division or space division. In one implementation, a reference signal resource can correspond to at least one reference signal port, such as 1, 2, 4 or 32, and each reference signal port will be configured with a specific time-frequency code resource. Typically, each reference signal port will occupy different time-frequency code domain resources to reduce mutual interference. Each reference signal port will correspond to one or more physical antennas of a network device.

[0082] 5. Coverage: The maximum distance between the beam emitted by the network device and the network device. For example, Figure 1 As shown, network device 110 can transmit beam 120. The location covered by beam 120 belongs to the coverage range of the network device. Therefore, the coverage range of the network device can be area 130. The larger the data volume of the physical antenna corresponding to the reference signal port (or antenna port), the farther the maximum distance of the beam transmitted by the network device from the network device is. That is, area 130 can be a circle with a larger radius.

[0083] 6. Beam width: the maximum width in the direction perpendicular to the direction of emission of the beam, e.g. Figure 1 The larger the beam width, the larger the coverage area of the beam in the direction perpendicular to the emission direction of the beam.

[0084] To facilitate understanding of the embodiments of this application, first Figure 1 A communication system applicable to the embodiments of the present application is described in detail.

[0085] Figure 1 Schematic diagram of a communication system 100 used in an embodiment of the present application. The communication system 100 may include at least one network device, such as Figure 1 The network device 110 shown; the communication system 100 may also include at least one terminal device, such as Figure 1 The terminal device 140 is shown. The terminal device 140 is within the coverage range 130 of the network device 110. The network device 110 and the terminal device 140 can communicate via a wireless link.

[0086] In one possible scenario, the network device 110 may act as a transmitter, the terminal device 140 may act as a receiver, and the network device 110 sends a signal to the terminal device 140; in another possible scenario, the network device 110 may act as a receiver, the terminal device 140 may act as a transmitter, and the terminal device 140 sends a signal to the network device 110.

[0087] Figure 1 The exemplary embodiment shows a network device 110 and a terminal device 140. Optionally, the communication system 100 may also include multiple network devices and / or multiple terminal devices. The network device 110 may be a router, a base station, etc., and the terminal device 140 may be a mobile phone, a tablet computer, a smart bracelet, etc., which is not limited in this embodiment of the present application.

[0088] The above-mentioned communication devices, such as Figure 1 The network device 110 or terminal device 140 in the embodiment may be configured with multiple antennas. The multiple antennas may include at least one transmitting antenna for sending signals and at least one receiving antenna for receiving signals. In addition, each communication device also includes a transmitter chain and a receiver chain. Those skilled in the art will appreciate that they may include multiple components related to signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, or antennas, etc.). Therefore, the network device 110 and the terminal device 140 can communicate using multi-antenna technology.

[0089] Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, but the embodiments of the present application are not limited thereto.

[0090] It should be understood that the method provided in the embodiment of the present application can be applied to various communication systems including the 5G new radio (NR) system. Figure 1 The communication system 100 shown is only an example. This application does not limit the specific architecture of the applicable system, nor does it limit the number and form of various devices included in each communication system.

[0091] Massive Multiple-User Multiple-Input Multiple-Output (MIMO) technology is a key technology for improving communication quality. MIMO technology uses multiple transmit antennas and receive antennas in both network equipment and terminal devices, respectively, to provide higher data rates through a multi-layer parallel transmission mode. Massive MIMO technology uses a large number of physical antennas, such as 512 antennas, to transmit downlink information to terminal devices, thereby improving the network's spectral efficiency. When using MIMO technology, network equipment must precode data before sending it to the terminal device. The method for precoding depends on the CSI.

[0092] Therefore, currently, terminal devices perform channel measurement using reference signal resources configured by network devices and report the CSI obtained from the channel measurement to the network devices. As network devices adopt a larger number of physical antennas, such as a 128-antenna array, if a codebook that supports a smaller number of antenna ports, such as a codebook that supports 32 antenna ports, is still used for channel measurement, the increase in the number of physical antennas corresponding to each reference signal port will reduce the beamwidth of the beam corresponding to that reference signal port, potentially resulting in lower channel measurement accuracy.

[0093] For example, Figure 2 As shown, if network device 210 uses a 32-antenna array and a codebook supporting 32 reference signal ports for channel measurement, one reference signal port corresponds to one physical antenna of network device 210, the beam width of beam 220 used by the reference signal port may be d1, and the coverage range of network device 210 may be area 230. If network device 210 uses a 128-antenna array and a codebook supporting 32 reference signal ports for channel measurement, one reference signal port corresponds to four physical antennas of network device 210, the beam width of beam 240 used by the reference signal port may be d2, and the coverage range of network device 210 may be area 250. Since one reference signal port corresponds to more physical antennas, the beam width d2 of beam 240 is smaller than the beam width d1 of beam 220.

[0094] In order to increase the beamwidth of the beam used by the reference signal port, a codebook that supports more antenna ports can be introduced, such as a codebook that supports 64 antenna ports or a codebook that supports 128 antenna ports. Although the introduction of a codebook that supports more antenna ports can make one reference signal port correspond to fewer physical antennas, thereby making the beamwidth of the beam used by the reference signal port larger, the transmission distance of the beam with a larger beamwidth is shorter, which makes the range of channel measurement smaller and may also lead to lower channel measurement accuracy.

[0095] For example, in combination Figure 3 For network device 310 using a 128-antenna array, if a codebook supporting 32 antenna ports is used for channel measurement, one reference signal port corresponds to four physical antennas, and the beam used by the reference signal port may be beam 320. The range covered by the beam used by the reference signal port is area 330. If a codebook supporting 128 antenna ports is used for channel measurement, one reference signal port corresponds to one physical antenna, and the beam used by the reference signal port may be beam 340. The range covered by the beam used by the reference signal port is area 350. Therefore, using a codebook supporting more reference signal ports reduces the range of channel measurement.

[0096] However, since the network device uses a larger antenna array to increase the coverage of the service data sent by the network device through channels such as PDSCH, when the channel measurement range is small, the channel measurement range is difficult to cover the range of the network device sending service data, resulting in low accuracy of channel measurement and low efficiency of the network device sending downlink service data. Figure 3 The coverage range of service data transmitted by network devices through channels such as the PDSCH may be close to area 330. When using a codebook supporting 128 reference signal ports for channel measurement, the channel measurement range may be area 350. The terminal device cannot perform channel measurement on the area corresponding to the ring 360 formed between area 330 and area 350, resulting in low channel measurement accuracy. This may in turn reduce the efficiency of downlink service data transmission by the network device.

[0097] Therefore, there is an urgent need to provide a method to increase the range of channel measurement to improve the accuracy of channel measurement and further improve the transmission efficiency of service data.

[0098] In view of this, the present application provides a channel state information reporting method in which a network device can configure multiple reference signal resources for a terminal device. Compared to configuring a single reference signal resource with more reference signal ports for a terminal device, the terminal device can use multiple reference signal resources to perform channel measurement over a wider area, which helps improve the accuracy of channel measurement and, in turn, the transmission efficiency of service data.

[0099] The following combination Figures 4 to 9 The channel state information reporting method and reporting device of the present application are described in detail. The embodiments shown in the present application illustrate the channel state information reporting method and reporting device provided by the present application from the perspective of device interaction. The specific form and quantity of each device shown therein are only examples and should not constitute any limitation on the implementation of the method provided by the present application. Below, taking the terminal device and network device as the execution subject as an example, the channel state information reporting method and reporting device of the embodiment of the present application are described in detail.

[0100] It should be understood that the terminal device can be the terminal device itself, or a chip, chip system, or processor that supports the terminal device to implement the channel state information reporting method, or a logical module or software that can implement all or part of the terminal device. The network device can be the network device itself, or a chip, chip system, or processor that supports the network device to implement the channel state information reporting method, or a logical module or software that can implement all or part of the network device. This application does not impose specific limitations on this.

[0101] Figure 41 is a flow chart of a CSI reporting method 400 provided in an embodiment of the present application. The method 400 may be applicable to the communication system 100. Figure 4 As shown, the method 400 includes the following steps:

[0102] S401: A network device sends first information to a terminal device, where the first information is used to configure K reference signal resources, where K is greater than 1. Correspondingly, the terminal device receives the first information from the network device.

[0103] Wherein, K is a positive integer greater than 1. For example, K can be 2, 4, etc. Reference signal resources include but are not limited to one or more of the following: a known signal sent by a network device to a terminal device for channel measurement. The reference signal may be, but is not limited to, any one or more of the following: CSI-reference signal (CSI-reference signal, CSI-RS) resources, cell-specific reference signal (cell specific reference signal, CS-RS) resources, UE-specific reference signal (user equipment specific reference signal, US-RS) resources, demodulation reference signal (demodulation reference signal, DMRS) resources, and synchronization system / physical broadcast channel block (synchronization system / physical broadcast channel block, SS / PBCH block) resources. Among them, SS / PBCH block can be referred to as SSB.

[0104] It should be understood that reference signal resources may also be referred to as pilot signal resources or downlink reference signal resources, etc., and this application does not make any specific limitation on this.

[0105] S402. The terminal device sends S CSIs to the network device. The S CSIs are obtained by performing channel measurement using S reference signal resources respectively. The S reference signal resources belong to K reference signal resources.

[0106] S can be a positive integer less than or equal to K. For example, if K is 4, S can be 1, 2, or 4. Reference signal resources can also be understood as channel measurement resources. The terminal device uses each of the S reference signal resources and the interference measurement resources configured by the network device to obtain S CSIs.

[0107] CSI typically includes parameters such as the precoding matrix indicator (PMI), rank indication (RI), and channel quality indication (CQI). When network devices transmit PDSCH and other service data based on CSI, they utilize the PMI, RI, and CQI parameters included in a single CSI. Therefore, terminal devices can report a portion of the K CSIs to the network device.

[0108] In the CSI reporting method of the present application, a network device configures multiple reference signal resources for a terminal device. The terminal device uses the multiple reference signal resources to perform channel measurement and reports all or part of the multiple CSIs to the network device. In this way, compared to a case where the network device configures a reference signal resource including more reference signal ports for the terminal device, the terminal device uses the multiple reference signal resources to perform channel measurement over a wider area, which helps to improve the accuracy of the channel measurement. In addition, when the terminal device reports part of the multiple CSIs, the signaling overhead of the CSI report is relatively small.

[0109] For example, in combination Figure 5 Assuming K is 4, the four reference signal resources are reference signal resource 1, reference signal resource 2, reference signal resource 3, and reference signal resource 4, respectively. Network device 510 uses a large-scale antenna array, such as a 128-antenna array. For each of the four reference signal resources, the number of reference signal ports included is less than 128, such as 32. In this way, one reference signal port corresponds to multiple physical antennas of the network device, such as four physical antennas, so that the beam used by the reference signal port has a longer transmission distance. For example, the beam used by a reference signal port in reference signal resource 1 may be beam 520, the beam used by a reference signal port in reference signal resource 2 may be beam 530, the beam used by a reference signal port in reference signal resource 3 may be beam 540, and the beam used by a reference signal port in reference signal resource 4 may be beam 550. This allows the beams used by all reference signal ports included in the four reference signal resources to cover area 560.

[0110] Recombination Figure 5, if the network device terminal device is configured with one reference signal resource: reference signal resource 5. And the number of reference signal ports included in the reference signal resource 5 is the sum of the number of reference signal ports included in the four reference signal resources mentioned above. One of the reference signal ports included in the reference signal resource 5 corresponds to a smaller number of physical antennas of the network device, for example, one physical antenna. Then the beam used by one of the reference signal ports included in the reference signal resource 5 may be beam 570. Compared with beam 520, beam 530, beam 540 or beam 550, since one of the reference signal ports in the reference signal resource 5 corresponds to a smaller number of physical antennas, the beam width of beam 570 is larger, but the transmission distance of beam 570 is shorter. Therefore, the beam used by the reference signal port included in the reference signal resource 5 can cover area 580.

[0111] Comparing coverage area 560 and coverage area 580, it can be seen that by configuring multiple reference signal resources for a terminal device, the terminal device can use these resources to perform channel measurement over a larger area. For network devices with a larger coverage area, this method can improve the accuracy of channel measurement, thereby increasing the communication efficiency between the network device and the terminal device.

[0112] For ease of understanding, the configuration method of K reference signal resources is first described.

[0113] As an optional embodiment, each of the K reference signal resources includes P reference signal ports, where P≤32. By setting P≤32, a new codebook supporting more than 32 antenna ports may not be introduced.

[0114] Wherein, P is a positive integer, for example, 16, 32, etc.

[0115] It should be understood that the reference signal port may also be referred to as a reference signal antenna port, and this application does not make any specific limitation on this.

[0116] Optionally, K and P may satisfy: K×P>32. For example, K×P may be 64 or 128.

[0117] The current protocol specifies that the codebook supports a maximum of 32 antenna ports. With this solution, the K reference signal resources include more than 32 reference signal ports, K×P. This allows for higher channel measurement accuracy for network devices using large-scale antenna arrays without introducing a new codebook with more than 32 antenna ports.

[0118] For example, in combination Figure 5, the network device 510 adopts a 128-antenna array, K can be 4, P can be 32, and K×P is 128. The four reference signal resources can be reference signal resource 1, reference signal resource 2, reference signal resource 3, and reference signal resource 4 mentioned above. The terminal device uses each of the four reference signal resources to perform channel measurement, and can respectively use a codebook supporting 32 antenna ports to perform channel measurement, and the range of the channel measurement is area 560. If a new codebook supporting 128 antenna ports is introduced, the terminal device uses a reference signal resource including 128 reference signal ports to perform channel measurement, and the range of the channel measurement can be area 510. Since the coverage range of the network device 510 using a large-scale antenna array is larger, its coverage range is closer to area 560. Therefore, the accuracy of the channel measurement performed in this way is higher.

[0119] Based on the above embodiment, optionally, each of the P reference signal ports corresponds to multiple physical antennas, and the polarization directions of the multiple physical antennas are the same.

[0120] It should be understood that the antenna array used by the network device may typically include physical antennas with two polarization directions. When the network device uses a large-scale antenna array, the number of physical antennas of the network device is typically greater than 32. Because each of the K reference signal resources includes P reference signal ports, each of the P reference signal ports can be mapped to multiple antennas. These multiple antennas have the same polarization direction. Thus, by mapping a reference signal port to multiple physical antennas with the same polarization direction, the beam used by the reference signal port can be transmitted over a longer distance.

[0121] Multiple antennas with the same polarization direction can be located on a single antenna sub-panel. Since antenna arrays used in network devices typically include physical antennas with two polarization directions, a single antenna sub-panel can include multiple antennas with a first polarization direction and multiple antennas with a second polarization direction. Furthermore, since a single reference signal port corresponds to multiple antennas with the same polarization direction, the first antenna sub-panel can correspond to two reference signal ports.

[0122] For example, Figure 6 A schematic diagram showing the correspondence between reference signal ports and physical antennas included in a reference signal resource provided in an embodiment of the present application is shown. Figure 6As shown, the network device adopts a 128-antenna array, which may include 64 physical antennas using the first polarization direction and 64 physical antennas using the second planned direction. Assume that P is 32 and K is 4. Each reference signal port can be mapped to 4 physical antennas with the same polarization direction. An antenna panel includes 4 physical antennas in the first polarization direction and 4 physical antennas in the second polarization direction. One antenna panel corresponds to 2 reference signal ports. For example, for one reference signal resource among the K reference signal resources, one reference signal port among the 32 reference signal ports included in the reference signal resource corresponds to the 4 physical antennas in the first polarization direction in the antenna panel 610; another reference signal port among the 32 reference signal ports can correspond to the 4 physical antennas in the second polarization direction in the antenna panel 610.

[0123] It should be understood that in the embodiment of the present application, the reference signal port corresponding to the physical antenna can also be replaced by the reference signal port being mapped to the physical antenna, and the present application does not make any specific limitation on this.

[0124] Optionally, the K reference signal resources adopt the same reference signal port configuration, where the reference signal port configuration includes a first reference signal port number and a second reference signal port number.

[0125] The first number of reference signal ports is the number of reference signal ports in the horizontal dimension of the same polarization direction, and the second number of reference signal ports is the number of reference signal ports in the vertical dimension of the same polarization direction. The vertical dimension can also be replaced by the vertical dimension.

[0126] Alternatively, the first number of reference signal ports and the second number of reference signal ports can also be understood as the number of rows and columns of a reference signal port array. The reference signal port array is an array formed by mapping reference signal ports onto physical antennas.

[0127] It should be understood that the above-mentioned number of first reference signal ports can also be represented by N1, and the number of second reference signal ports can also be represented by N2; or, the number of first reference signal ports can be represented by N2, and the number of second reference signal ports can be represented by N1. The reference signal port configuration can also be represented by (N1, N2). The horizontal dimension and the vertical dimension are the two directions in which the P reference signal ports are distributed. The embodiment of the present application does not limit the two directions to be the horizontal direction and the vertical direction. For example, the horizontal dimension can also be replaced by the first direction, and the vertical dimension can also be replaced by the second direction. The first direction and the second direction are different, and the first direction and the second direction can be perpendicular to each other.

[0128] In one example, when P is 32, N1 can be 4, N2 can also be 4, and the reference signal port array can be as follows: Figure 6As shown. Each antenna panel corresponds to two reference signal ports. For example, for antenna panel 610, one reference signal port corresponds to a physical antenna in antenna panel 610 that uses a first polarization direction, and the other reference signal port corresponds to a physical antenna in antenna panel 610 that uses a second polarization direction. The two reference signal ports can be understood as being arranged overlappingly on antenna panel 610. Similarly, the reference signal ports among the 32 reference signal ports overlap in pairs, and the resulting array of reference signal ports is a 4-row, 4-column reference signal port array.

[0129] In another example, when P is 32, N1 can be 2, N2 can be 8, and the reference signal port array can be as follows: Figure 7 As shown, each antenna panel corresponds to two reference signal ports. For example, for antenna panel 710, one reference signal port corresponds to a physical antenna in antenna panel 710 that uses the first polarization direction, and the other reference signal port corresponds to a physical antenna in antenna panel 710 that uses the second polarization direction. The 32 reference signal ports overlap with each other, resulting in an array of 8 rows and 2 columns of reference signal ports.

[0130] It should be noted that the configuration of the 32 reference signal ports included in each of the K reference signal resources, namely (N1, N2), is the same. For example, K is 4, and the reference signal ports of the 4 reference signal resources are all as follows: Figure 6 As shown, or Figure 7 shown.

[0131] It should be understood that the reference signal port configuration (N1, N2) can be one of (4, 4), (8, 2) or (16, 1).

[0132] By making K reference signal resources use the same reference signal port configuration, the coverage area of the beams used by the reference signal ports of the K reference signal resources can be larger, thereby increasing the area range of channel measurement and further improving the accuracy of channel measurement.

[0133] For example, in combination Figure 5 If K is 4, the beams used by the reference signal ports in the four reference signal resources are beam 520, beam 530, beam 540, and beam 550, respectively. The sum of the widths of the four beams is close to the width of beam 570. If the four reference signal resources use different reference signal port configurations, the beams used by the reference signal ports in the four reference signal resources can be as follows: Figure 8 The beams shown are beam 820, beam 830, beam 840, and beam 570. These four beams have a lot of overlap, making it difficult for these four beams to cover beam 860.

[0134] Based on the above embodiment, reference signal ports with the same reference signal port identifier in the K reference signal resources are all mapped to the same physical antenna.

[0135] For example, in combination Figure 6 , assuming K is 4, the reference signal port configuration of the 4 reference signal resources is as follows Figure 6 As shown. Reference signal port 1 in one of the four reference signal resources is mapped to the four physical antennas using the first polarization direction in antenna panel 610. Reference signal port 1 in the remaining three reference signal resources is also mapped to the four physical antennas using the first polarization direction in antenna panel 610. In this way, the coverage range of the beam used by the reference signal ports with the same reference signal port identifier in the K reference signal resources is larger.

[0136] Optionally, the P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, and the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, where different beams include: beams with different beam directions and / or beams with different beam widths.

[0137] The same beam can be understood as a beam with the same beam width and beam direction. The beams used by the P reference signal ports included in each reference signal resource are beams with the same beam width and beam direction. Therefore, K reference signal resources correspond to K types of beams. The fact that the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams indicates that the K types of beams corresponding to the K reference signal resources are different. For example, Figure 9 As shown, assuming K is 4, the four reference signal resources include: reference signal resource 1, reference signal resource 2, reference signal resource 3, and reference signal resource 4. The P reference signal ports included in reference signal resource 1 use beam 910; the P reference signal ports included in reference signal resource 2 use beam 920; the P reference signal ports included in reference signal resource 3 use beam 930; and the P reference signal ports included in reference signal resource 4 use beam 940. Beam 910, beam 920, beam 930, and beam 940 have different beam directions.

[0138] It should be understood that the above-mentioned beam can also be replaced by a spatial domain filter. The P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, which can also be understood as: the P reference signal ports in the same reference signal resource use the same spatial domain filter, or, the P reference signal ports in the same reference signal resource are quasi-co-located and the quasi-co-location type used includes Type D (Type D). The P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, which can be understood as: the reference signal ports of different reference signal resources use different spatial domain filters, or, the reference signal ports of different reference signal resources are quasi-co-located but the quasi-co-location type used does not include Type D. This application does not make specific limitations on this.

[0139] The above-mentioned type D can also be understood as the same beam parameters, etc.

[0140] It should be noted that different beams include, but are not limited to, beams with different beam directions and / or beams with different beam widths. In other words, different beams may also be beams with different parameters used to describe beam properties, and do not constitute a limitation on the embodiments of the present application.

[0141] Based on the above embodiment, the different beams may be orthogonal beams.

[0142] Among them, orthogonal beams may refer to multiple beams that do not interfere with each other or whose interference with each other is less than a certain threshold. The use of orthogonal beams helps network devices to implement MU (multi-user) pairing decisions based on the measurement reports of terminal devices. For example, if the beams recommended for use in the measurement reports (CSI) of two terminal devices are orthogonal, the network device may consider pairing these two terminal devices in subsequent data transmission scheduling and send downlink data to these two terminal devices in MU-MIMO mode.

[0143] Based on the above embodiment, the P reference signal ports of the K reference signal resources are quasi-co-located.

[0144] Exemplarily, assuming that K is 4, the P reference signal ports included in each of the four reference signal resources are mapped to an antenna array of the same network device, then the P reference signal ports of the four reference signal resources are quasi-co-located.

[0145] In this way, beams used by the P reference signal ports of the K reference signal resources can be transmitted through the same antenna array or the same network device.

[0146] Based on the above embodiment, the beam used by each of the P reference signal ports can be simultaneously transmitted from X antennas in a beamforming manner. The X antennas are multiple antennas with the same polarization direction mapped to each reference signal port. X can be equal to K.

[0147] In this way, the coverage range of the beams used by the P reference signal ports included in the K reference signal resources can be made larger.

[0148] The following describes how the terminal device reports S CSIs.

[0149] As an optional embodiment, the S CSIs are the CSIs with the highest spectrum efficiency among the K CSIs.

[0150] The S CSIs may be one or more CSIs with the highest spectral efficiency among the K CSIs. Furthermore, when S is greater than 1, the S CSIs are the CSIs with the highest spectral efficiency among the K CSIs. For example, if K is 4 and S is 2, the four CSIs are: the first CSI, the second CSI, the third CSI, and the fourth CSI. The order of spectral efficiency from highest to lowest is: fourth CSI > first CSI > second CSI > third CSI. In this case, the S CSIs are the fourth CSI and the first CSI.

[0151] In this way, the network device can send downlink information based on the CSI with the highest spectrum efficiency, thereby improving the efficiency of the network device in sending downlink information.

[0152] In some possible implementations, spectrum efficiency may also be replaced by throughput.

[0153] Optionally, method 400 further includes: the terminal device sending second information to the network device, where the second information is used to indicate S reference signal resources, where the S reference signal resources are reference signal resources corresponding to the S CSIs among the K reference signal resources. Correspondingly, the network device receives the second information from the terminal device.

[0154] The S reference signal resources are reference signal resources corresponding to the S CSIs among the K reference signal resources, indicating that the S CSIs are determined by the terminal device by performing channel measurement using the S reference signal resources respectively.

[0155] For example, assume that K is 4 and S is 2. The four reference signal resources include: reference signal resource 1, reference signal resource 2, reference signal resource 3, and reference signal resource 4. The terminal device uses reference signal resource 1 to perform channel measurement to obtain the first CSI; uses reference signal resource 2 to perform channel measurement to obtain the second CSI; uses reference signal resource 3 to perform channel measurement to obtain the third CSI; and uses reference signal resource 4 to perform channel measurement to obtain the fourth CSI. Arranged in descending order of spectral efficiency: fourth CSI > first CSI > second CSI > third CSI. If S is 1, the S CSI is the fourth CSI, and the S reference signal resources are reference signal resource 4. If S is 2, the S CSI are the fourth CSI and the first CSI, and the S reference signal resources are reference signal resource 4 and reference signal resource 1.

[0156] In this way, the network device can determine which reference signal resources are used to perform channel measurement to obtain the S CSIs.

[0157] Optionally, the second information may indicate S reference signal resources in one of the following two ways.

[0158] Mode 1: The second information includes indexes of S reference signal resources. In this way, the network device can determine the S reference signal resources according to the indexes of the S reference signal resources.

[0159] Each of the K reference signal resources may correspond to an index. The index may be an integer starting from 0. Alternatively, the indexes of the K reference signal resources may be determined by protocol or configured by the network device through signaling. In this way, both the terminal device and the network device know the indexes of the K reference signal resources. For example, K is 4, and the indexes of the four reference signal resources may be 0, 1, 2, and 3, respectively.

[0160] Mode 2: The second information includes a bitmap. In this way, the network device can determine S reference signal resources according to the bitmap.

[0161] The number of bits in the bitmap may be K. Each bit in the bitmap corresponds to a reference signal resource. 1 in the bitmap may indicate selection, and 0 may indicate non-selection; or 0 may indicate selection, and 1 may indicate non-selection.

[0162] For example, assume that K is 4. The four reference signal resources include: reference signal resource 1, reference signal resource 2, reference signal resource 3, and reference signal resource 4. The bitmap may be 1100. If 1 indicates selection, and the bits in the bitmap correspond to reference signal resource 1, reference signal resource 2, reference signal resource 3, and reference signal resource 4, from left to right, then 1100 indicates that the S reference signal resources are reference signal resource 1 and reference signal resource 2.

[0163] It should be understood that the terminal device can send the second information and the S CSIs to the network device through one signaling or different signaling. In addition, when the terminal device can send the second information and the S CSIs to the network device through one signaling, the second information and the S CSIs can be carried in the same or different fields of the signaling, and this application does not specifically limit this.

[0164] As an optional embodiment, S is agreed upon by the protocol or configured by the network device through signaling.

[0165] In this way, the terminal device can determine the amount of CSI to be reported.

[0166] Exemplarily, the method 400 further includes: the network device sends third information to the terminal device, where the third information is used to indicate S. Correspondingly, the terminal device receives the third information from the network device.

[0167] It should be understood that the third information and the first information can be sent through one signaling or different signaling, and when the third information and the first information are sent through one signaling, the third information and the first information can be carried in the same or different fields of the signaling. This application does not make specific limitations on this.

[0168] Combined with the above Figures 4 to 9 , describes in detail the method for reporting channel state information in the embodiment of the present application, and the following is combined with Figures 10 and 11 , describes in detail the channel state information reporting device of the embodiment of the present application.

[0169] Figure 10 Schematic diagram of a channel state information reporting device 1000 provided in an embodiment of the present application. Figure 10 As shown, the apparatus 1000 includes: a receiving module 1001 and a sending module 1002 .

[0170] In a possible implementation, the apparatus 1000 is used to implement the steps corresponding to the terminal device in the above method 400.

[0171] A receiving module 1001 is configured to receive first information from a network device, where the first information is used to configure K reference signal resources, where K is greater than 1. A sending module 1002 is configured to send S CSIs to the network device, where the S CSIs are obtained by performing channel measurement using S reference signal resources, respectively, and the S reference signal resources belong to the K reference signal resources.

[0172] Optionally, each of the K reference signal resources includes P reference signal ports, where P≤32.

[0173] Optionally, the K reference signal resources adopt the same reference signal port configuration, where the reference signal port configuration includes a first reference signal port number and a second reference signal port number.

[0174] Optionally, the P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, and the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, where different beams include: beams with different beam directions and / or beams with different beam widths.

[0175] Optionally, the different beams are orthogonal beams.

[0176] Optionally, each of the P reference signal ports corresponds to multiple physical antennas, and the polarization directions of the multiple physical antennas are the same.

[0177] Optionally, the P reference signal ports of the K reference signal resources are quasi-co-located.

[0178] Optionally, the S CSIs are CSIs with the highest spectrum efficiency among the K CSIs.

[0179] Optionally, the sending module 1002 is further used to: send second information to the network device, where the second information is used to indicate S reference signal resources, where the S reference signal resources are reference signal resources corresponding to the S CSIs among the K reference signal resources.

[0180] Optionally, the second information includes indexes of S reference signal resources.

[0181] In another possible implementation, the apparatus 1000 is used to implement the steps corresponding to the network device in the above method 400.

[0182] The sending module 1002 is used to send first information to the terminal device, where the first information is used to configure K reference signal resources, where K is greater than 1; the receiving module 1001 is used to receive S channel state information CSI from the terminal device, where the S CSI are obtained by performing channel measurement using S reference signal resources respectively, and the S reference signal resources belong to K reference signal resources.

[0183] Optionally, each of the K reference signal resources includes P reference signal ports, where P≤32.

[0184] Optionally, the K reference signal resources adopt the same reference signal port configuration, where the reference signal port configuration includes a first reference signal port number and a second reference signal port number.

[0185] Optionally, the P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, and the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, where different beams include: beams with different beam directions and / or beams with different beam widths.

[0186] Optionally, the different beams are orthogonal beams.

[0187] Optionally, each of the P reference signal ports corresponds to multiple physical antennas, and the polarization directions of the multiple physical antennas are the same.

[0188] Optionally, the P reference signal ports of the K reference signal resources are quasi-co-located.

[0189] Optionally, the S CSIs are CSIs with the highest spectrum efficiency among the K CSIs.

[0190] Optionally, the receiving module 1001 is further used to: receive second information from the terminal device, where the second information is used to indicate S reference signal resources, where the S reference signal resources are reference signal resources corresponding to the S CSIs among the K reference signal resources.

[0191] Optionally, the second information includes indexes of S reference signal resources.

[0192] It should be understood that the device 1000 here is embodied in the form of a functional module. The term "module" here can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a combined logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art will understand that the device 1000 can be specifically a terminal device or a network device in the above-mentioned embodiment, and the device 1000 can be used to execute the various processes and / or steps corresponding to the terminal device or the network device in the above-mentioned method embodiment. To avoid repetition, they will not be described here.

[0193] The apparatus 1000 has the function of implementing the corresponding steps performed by the terminal device or network device in the above method; the above functions can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

[0194] In the embodiments of this application, Figure 10 The device 1000 in the embodiment may also be a chip, such as a SOC. Correspondingly, the receiving module 1001 may be a transceiver circuit of the chip, which is not limited here.

[0195] Figure 11 1 shows a schematic structural diagram of an apparatus 1100 provided in an embodiment of the present application. The apparatus 1100 includes a processor 1101, a transceiver 1102, and a memory 1103. The processor 1101, the transceiver 1102, and the memory 1103 communicate with each other via an internal connection path. The memory 1103 is used to store instructions, and the processor 1101 is used to execute the instructions stored in the memory 1103 to control the transceiver 1102 to send and / or receive signals.

[0196] It should be understood that the apparatus 1100 can be specifically a terminal device or network device in the above-described embodiments, and can be used to execute the various steps and / or processes corresponding to the terminal device or network device in the above-described method embodiments. Optionally, the memory 1103 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory may also store device type information. The processor 1101 can be used to execute instructions stored in the memory, and when the processor 1101 executes the instructions stored in the memory, the processor 1101 is used to execute the various steps and / or processes of the above-described method embodiments. The transceiver 1102 may include a transmitter and a receiver. The transmitter can be used to implement the various steps and / or processes corresponding to the above-described transceiver for performing a sending action, and the receiver can be used to implement the various steps and / or processes corresponding to the above-described transceiver for performing a receiving action.

[0197] It should be understood that in the embodiments of the present application, the processor may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0198] During implementation, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor executes the instructions in the memory, and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0199] The present application also provides a computer-readable storage medium, which is used to store a computer program, and the computer program is used to implement the method shown in the above method embodiment.

[0200] The present application also provides a computer program product, which includes a computer program (also referred to as code or instructions). When the computer program runs on a computer, the computer can execute the method shown in the above method embodiment.

[0201] Those skilled in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0202] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and modules described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0203] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0204] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected to achieve the purpose of the present embodiment according to actual needs.

[0205] In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0206] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0207] The above description is merely a specific embodiment of the present application, but the scope of protection of the embodiments of the present application is not limited thereto. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope disclosed in the embodiments of the present application, and such changes or substitutions should be included in the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be based on the scope of protection of the claims.

Claims

1. A method for reporting channel state information (CSI), characterized in that: include: receiving first information from a network device, where the first information is used to configure K reference signal resources, where K is greater than 1; S CSIs are sent to a network device, where the S CSIs are obtained by performing channel measurement using S reference signal resources, respectively, and the S reference signal resources belong to the K reference signal resources.

2. The method according to claim 1, characterized in that Each of the K reference signal resources includes P reference signal ports, where P≤32.

3. The method according to claim 2, characterized in that The K reference signal resources use the same reference signal port configuration, where the reference signal port configuration includes a first reference signal port number and a second reference signal port number.

4. The method according to claim 2 or 3, characterized in that The P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, and the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, where the different beams include: beams with different beam directions and / or beams with different beam widths.

5. The method according to claim 4, characterized in that The different beams are orthogonal beams.

6. The method according to any one of claims 2 to 5, characterized in that Each of the P reference signal ports corresponds to multiple physical antennas, and the multiple physical antennas have the same polarization direction.

7. The method according to any one of claims 1 to 6, characterized in that The P reference signal ports of the K reference signal resources are quasi-co-located.

8. The method according to any one of claims 1 to 7, characterized in that The S CSIs are the CSIs with the highest spectrum efficiency among the K CSIs, and the K CSIs are obtained by performing channel measurement using the K reference signal resources respectively.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: Second information is sent to the network device, where the second information is used to indicate S reference signal resources, where the S reference signal resources are reference signal resources corresponding to the S CSIs among the K reference signal resources.

10. The method according to claim 9, characterized in that The second information includes indexes of the S reference signal resources.

11. The method according to any one of claims 1 to 10, characterized in that S is a protocol agreement or configuration of the network device through signaling.

12. A method for reporting channel state information, characterized in that: include: Sending first information to a terminal device, where the first information is used to configure K reference signal resources, where K is greater than 1; S channel state information CSIs are received from the terminal device, where the S CSIs are obtained by performing channel measurements using S reference signal resources, respectively, and the S reference signal resources belong to the K reference signal resources.

13. The method according to claim 12, characterized in that Each of the K reference signal resources includes P reference signal ports, where P≤32.

14. The method according to claim 13, characterized in that The K reference signal resources use the same reference signal port configuration, where the reference signal port configuration includes a first reference signal port number and a second reference signal port number.

15. The method according to claim 13 or 14, characterized in that The P reference signal ports included in the same reference signal resource among the K reference signal resources use the same beam, and the P reference signal ports included in different reference signal resources among the K reference signal resources use different beams, where the different beams include: beams with different beam directions and / or beams with different beam widths.

16. The method according to claim 15, characterized in that The different beams are orthogonal beams.

17. The method according to any one of claims 13 to 16, characterized in that Each of the P reference signal ports corresponds to multiple physical antennas, and the multiple physical antennas have the same polarization direction.

18. The method according to any one of claims 12 to 17, characterized in that The P reference signal ports of the K reference signal resources are quasi-co-located.

19. The method according to any one of claims 12 to 18, characterized in that The S CSIs are the CSIs with the highest spectrum efficiency among the K CSIs.

20. The method according to any one of claims 12 to 19, characterized in that The method further comprises: Receive second information from the terminal device, where the second information is used to indicate S reference signal resources, where the S reference signal resources are reference signal resources among the K reference signal resources corresponding to the S CSIs.

21. The method according to claim 20, characterized in that The second information includes indexes of the S reference signal resources.

22. The method according to any one of claims 12 to 21, characterized in that S is agreed upon in the protocol or configured by the network device through signaling.

23. A reporting device, characterized in that: Comprising means for performing the method of any one of claims 1 to 11, or any one of claims 12 to 22.

24. A reporting device, characterized in that: include: A processor, the processor being coupled to a memory, the memory being used to store a computer program, wherein when the processor calls the computer program, the device is caused to execute the method according to any one of claims 1 to 11 or any one of claims 12 to 22.

25. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program comprising instructions for implementing the method according to any one of claims 1 to 11 or any one of claims 12 to 22.

26. A computer program product, characterized in that The computer program product includes computer program code, and when the computer program code is run on a computer, the computer is enabled to implement the method according to any one of claims 1 to 11 or any one of claims 12 to 22.

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