Communication method and device

Abstract

Provided is a communication method, the method comprising: a base station sending CSI reporting configuration information to a terminal device, the CSI reporting configuration information corresponding to M CSI resources, the CSI reporting configuration information comprising N sub-configuration information, each sub-configuration information corresponding to M CSI resources, each sub-configuration information indicating at least one sequence identifier and at least one port sequence, each port sequence comprises at least one antenna port, each sequence identifier indicates one port sequence, M is an integer greater than or equal to 1, and N is an integer greater than 1; and the base station sends the reference signal to the terminal equipment on the M CSI resources. According to the present application, by adding a plurality of sub-configuration information in the CSI reporting configuration information, the terminal device can measure the CSI resource with a plurality of configurations to obtain the CSI, thereby improving the flexibility of CSI reporting.

Description

Technical Field

[0001] The present application relates to the field of communications, and in particular to a communication method and device. Background Art

[0002] With the introduction of network energy saving (NES), network devices will have different configurations when scheduling the physical downlink shared channel (PDSCH). In different configurations, network devices turn on different antennas, thereby reducing the power consumption of network devices. Network devices need to obtain channel state information (CSI) before scheduling PDSCH. CSI is usually obtained by terminal devices through channel measurement on CSI resources. Currently, terminal devices only measure and report CSI under one configuration of CSI resources, which cannot meet the needs of network energy saving.

[0003] Therefore, how to measure CSI with multiple configurations and improve the flexibility of CSI reporting is a question worth considering. Summary of the invention

[0004] The present application provides a communication method, which enables a terminal device to measure and obtain CSI for CSI resources with multiple configurations by adding multiple sub-configuration information to CSI reporting configuration information, thereby improving the flexibility of CSI reporting.

[0005] In a first aspect, a communication method is provided, which may be executed by a base station, or may be executed by a chip or circuit used in a base station, and the present application does not limit this. For ease of description, the following description is given by taking execution by a base station as an example.

[0006] The method includes: a base station sends channel state information CSI reporting configuration information to a terminal device, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each sub-configuration information corresponds to the M CSI resources, each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, each sequence identifier indicates a port sequence, M is an integer greater than or equal to 1, and N is an integer greater than 1; the base station sends a reference signal to the terminal device on the M CSI resources.

[0007] In an embodiment of the present application, channel state information (CSI) reporting configuration information includes N sub-configuration information, and each sub-configuration information includes port indication information, the port indication information indicates at least one sequence identifier and at least one port sequence, and the terminal device can receive a reference signal on the CSI resource according to the sub-configuration information, and measure the corresponding antenna port according to the sequence identifier and the port sequence indicated by the port indication information in the sub-configuration information. Then, the terminal device can report CSI under different sub-configurations to the base station, thereby improving the flexibility of reporting CSI.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the antenna ports included in the port sequence belong to antenna ports that are turned on by the base station when the base station sends a physical downlink shared channel to the terminal device.

[0009] It should be noted that, in the embodiment of the present application, the antenna port in the sub-configuration information is the same as the physical antenna corresponding to the antenna port turned on by the base station when the base station sends a physical downlink shared channel to the terminal device. However, since the numbering rules of the antenna ports may be different, the antenna port number in the sub-configuration information may be different from the antenna port number turned on by the base station when the base station sends a physical downlink shared channel to the terminal device.

[0010] Exemplarily, for the same physical antenna, the antenna port number of the CSI-RS in the sub-configuration information can be 3000+i, 0≤i≤31, and the antenna port number of the physical downlink shared channel can be 1000+j, 0≤j≤11, where i and j are both integers.

[0011] In an embodiment of the present application, the sub-configuration information may be determined by the base station according to the network energy-saving configuration information. Specifically, the network energy-saving configuration information indicates the antenna ports of the CSI-RS that are turned on and off. Exemplarily, the network energy-saving configuration information includes a bitmap, and the bits in the bitmap correspond one-to-one to the antenna ports of the CSI-RS. 1 in the bitmap indicates enable, and 0 indicates disable. Enable can be understood as using the antenna port of the CSI-RS for CSI measurement, and then the physical antenna corresponding to the antenna port of the CSI-RS can be used to transmit the PDSCH. Assuming that the CSI-RS has 8 ports, the bitmap is 10001000, indicating that the antenna ports 0 (i=0) and 4 (i=4) corresponding to the antenna port number of the CSI-RS are turned on, and the other antenna ports are turned off. The base station determines the port indication information according to the network energy-saving configuration information, and the antenna ports in the port sequence in the port indication information are all antenna ports turned on in the network energy-saving configuration information.

[0012] The embodiments of the present application can perform channel measurement on antenna ports under different configurations, so that the base station can use energy-saving configuration when sending a physical downlink shared channel to achieve energy saving of the base station.

[0013] In combination with the first aspect, in some implementations of the first aspect, the sub-configuration information includes: at least one sequence identifier and at least one port sequence.

[0014] The embodiment of the present application can explicitly indicate the port sequence that needs to be measured without further judgment by the terminal device, thereby reducing the amount of calculation of the terminal device and improving the calculation efficiency.

[0015] In combination with the first aspect, in some implementations of the first aspect, the sub-configuration information includes: at least one antenna port.

[0016] The embodiment of the present application can implicitly indicate the port sequence that needs to be measured. Specifically, if there is no sequence identifier in the sub-configuration information, the terminal device will sort at least one antenna port in a default order, and then determine the value range of the sequence identifier according to the number of antenna ports in the sub-configuration information. When the sequence identifier is n, the first n antenna ports in the antenna ports sorted in the default order are used as the port sequence corresponding to the sequence identifier n. Assume that the number of antenna ports in the sub-configuration information is m, and the antenna ports are sorted by default as p0, p1, p2...p m-1 , the sequence number is 1 to m, then the corresponding port sequence when the sequence number is 1 is {p0}, the corresponding port sequence when the sequence number is 2 is {p0, p1}, the corresponding port sequence when the sequence number is 3 is {p0, p1, p2}, and so on, the corresponding port sequence when the sequence number is m is {p0, p1, p2...p m-1 The default order may be specified in the protocol or may be pre-set in the base station and the terminal device, and this application does not limit this.

[0017] The embodiment of the present application can save signaling overhead by implicitly indicating sequence identifiers and port sequences.

[0018] In combination with the first aspect, in some implementations of the first aspect, the sequence identifier includes a rank, and the value of the rank indicates the number of antenna ports in a port sequence indicated by the rank.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the N sub-configuration information include first sub-configuration information and second sub-configuration information, and the port sequence indicated by the first sub-configuration information and the port sequence indicated by the second sub-configuration information include at least one identical antenna port; the method also includes the base station sending first information to the terminal device, the first information being used to instruct the terminal device to measure a reference signal on the port sequence indicated by the first sub-configuration information in a first time unit, and to measure a reference signal on the port sequence indicated by the second sub-configuration information in a second time unit, and the first time unit and the second time unit are different time units.

[0020] If the antenna ports in different sub-configurations overlap, the overlapping antenna ports will have multiple precoding matrices, and the base station cannot determine the precoding matrix on the overlapping antenna ports, which will affect the base station's selection of antenna ports for sending physical downlink shared channels. In the embodiment of the present application, by instructing the terminal device to measure the overlapping antenna ports at different time units, the sub-configurations can be distinguished, which is equivalent to different resources corresponding to the overlapping sub-configurations of the antenna ports, thereby achieving normal operation of the base station.

[0021] In combination with the first aspect, in some implementations of the first aspect, the time unit includes a time slot.

[0022] In a second aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a chip or circuit used for a terminal device, which is not limited in this application. For ease of description, the following description is given by taking the execution by a terminal device as an example.

[0023] The method includes: a terminal device receives channel state information CSI reporting configuration information from a base station, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each sub-configuration information corresponds to the M CSI resources, each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, each sequence identifier indicates a port sequence, M is an integer greater than or equal to 1, and N is an integer greater than 1; the terminal device receives a reference signal on the M CSI resources.

[0024] In combination with the second aspect, in some implementations of the second aspect, the sub-configuration information includes: at least one sequence identifier and at least one port sequence.

[0025] In combination with the second aspect, in some implementations of the second aspect, the sub-configuration information includes: at least one antenna port.

[0026] In combination with the second aspect, in some implementations of the second aspect, the sequence identifier includes a rank, and the value of the rank indicates the number of antenna ports in a port sequence indicated by the rank.

[0027] In combination with the second aspect, in certain implementations of the second aspect, the N sub-configuration information include first sub-configuration information and second sub-configuration information, and the port sequence indicated by the first sub-configuration information and the port sequence indicated by the second sub-configuration information include at least one identical antenna port.

[0028] The method also includes the terminal device measuring a reference signal on a port sequence indicated by first sub-configuration information in a first time unit, and measuring a reference signal on a port sequence indicated by second sub-configuration information in a second time unit, wherein the first time unit and the second time unit are different time units.

[0029] In combination with the second aspect, in some implementations of the second aspect, the time unit includes a time slot.

[0030] The beneficial effects of the second aspect refer to the description of the first aspect and will not be elaborated here.

[0031] In a third aspect, a communication method is provided, which may be executed by a base station, or may be executed by a chip or circuit used in a base station, and this application does not limit this. For ease of description, the following description is given by taking execution by a base station as an example.

[0032] The method includes: a base station sends channel state information CSI reporting configuration information to a terminal device, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes M port indication information and N sub-configuration information, the port indication information corresponds to the CSI resources one-to-one, each sub-configuration information corresponds to the M CSI resources, the port indication information is used to indicate at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port for channel measurement, each sequence identifier indicates a port sequence, the sub-configuration information is used to indicate at least one second antenna port, M is an integer greater than or equal to 1, and N is an integer greater than 1; the base station sends a reference signal to the terminal device on the M CSI resources with at least one first port sequence, the first port sequence belongs to the port sequence indicated by the port indication information, and the antenna port in the first port sequence is the second antenna port. It should be noted that in the embodiment of the present application, the base station sends a reference signal to the terminal device on M CSI resources with at least one first port sequence, which means that the antenna ports for sending the reference signal on the M CSI resources by the base station include all the antenna ports in at least one first port sequence, but do not necessarily include only all the antenna ports in at least one first port sequence. Exemplarily, the base station can send the reference signal on M CSI resources with all antenna ports (i.e., P antenna ports).

[0033] In an embodiment of the present application, the base station provides port indication information and sub-configuration information to the terminal device, so that the terminal device can determine the port sequence to be measured from the port indication information according to different sub-configuration requirements, so that the CSI under different sub-configurations can be reported to the base station at the granularity of the port sequence, thereby improving the flexibility of reporting CSI.

[0034] In combination with the third aspect, in certain implementations of the third aspect, the second antenna port is an antenna port that is turned on by the base station when sending a physical downlink shared channel to the terminal device.

[0035] In an embodiment of the present application, the base station has an energy-saving configuration, and the sub-configuration information includes the energy-saving configuration information of the base station. The second antenna port indicated in the sub-configuration information is the antenna port turned on by the base station when the base station sends a physical downlink shared channel to the terminal device. The embodiment of the present application can perform channel measurement on the antenna port for different energy-saving configurations, so that the base station can use the energy-saving configuration when sending the physical downlink shared channel to achieve energy saving of the base station.

[0036] In combination with the third aspect, in some implementations of the third aspect, the port indication information includes: at least one sequence identifier and at least one port sequence.

[0037] The embodiment of the present application can explicitly indicate the port sequence that needs to be measured without further judgment by the terminal device, thereby reducing the amount of calculation of the terminal device and improving the calculation efficiency.

[0038] In combination with the third aspect, in some implementations of the third aspect, the port indication information includes: at least one antenna port.

[0039] The embodiment of the present application can save signaling overhead by implicitly indicating sequence identifiers and port sequences.

[0040] In combination with the third aspect, in certain implementations of the third aspect, the sequence identifier includes a rank, and the value of the rank indicates the number of antenna ports in a port sequence indicated by the rank.

[0041] In combination with the third aspect, in certain implementations of the third aspect, T network energy-saving configuration information includes first sub-configuration information and second sub-configuration information, and at least one second antenna port indicated by the first sub-configuration information and at least one second antenna port indicated by the second sub-configuration information include at least one identical antenna port.

[0042] The method also includes: the base station sends first information to the terminal device, the first information is used to instruct the terminal device to measure the reference signal of at least one second antenna port indicated by the first sub-configuration information in a first time unit, and measure the reference signal of at least one second antenna port indicated by the second sub-configuration information in a second time unit, and the first time unit and the second time unit are not the same time unit.

[0043] In an embodiment of the present application, by instructing the terminal device to measure overlapping antenna ports at different time units, the sub-configurations can be distinguished, which is equivalent to different resources corresponding to the overlapping sub-configurations of the antenna ports, thereby achieving normal operation of the base station.

[0044] In combination with the third aspect, in some implementations of the third aspect, the time unit includes a time slot.

[0045] In a fourth aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a chip or circuit for a terminal device, which is not limited in this application. For ease of description, the following description is taken as an example of execution by a terminal device.

[0046] The method includes: a terminal device receives channel state information CSI reporting configuration information from a base station, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes M port indication information and N sub-configuration information, the port indication information corresponds to the CSI resources one-to-one, each sub-configuration information corresponds to the M CSI resources, the port indication information is used to indicate at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port for channel measurement, each sequence identifier indicates a port sequence, the sub-configuration information is used to indicate at least one second antenna port, M is an integer greater than or equal to 1, and N is an integer greater than 1.

[0047] The terminal device measures a reference signal on at least one first port sequence on M CSI resources, where the first port sequence belongs to the port sequence indicated by the port indication information, and the antenna port in the first port sequence is the second antenna port.

[0048] It should be noted that in the embodiment of the present application, the terminal device measures the reference signal on at least one first port sequence on M CSI resources, which means that the reference signal measured by the terminal device on M CSI resources includes the reference signals on all antenna ports in at least one first port sequence, but does not necessarily include only the reference signals on all antenna ports in at least one first port sequence.

[0049] In combination with the fourth aspect, in certain implementations of the fourth aspect, the second antenna port is an antenna port that is turned on by the base station when the base station sends a physical downlink shared channel.

[0050] In combination with the fourth aspect, in some implementations of the fourth aspect, the port indication information includes: at least one sequence identifier and at least one port sequence.

[0051] In combination with the fourth aspect, in some implementations of the fourth aspect, the port indication information includes: at least one port sequence and a first corresponding relationship, where the first corresponding relationship is a corresponding relationship between a sequence identifier and a port sequence.

[0052] In combination with the fourth aspect, in certain implementations of the fourth aspect, the sequence identifier includes a rank, and the value of the rank indicates the number of antenna ports in a port sequence indicated by the rank.

[0053] In combination with the fourth aspect, in certain implementations of the fourth aspect, T network energy-saving configuration information includes first sub-configuration information and second sub-configuration information, and at least one second antenna port indicated by the first sub-configuration information and at least one second antenna port indicated by the second sub-configuration information include at least one identical antenna port.

[0054] The method also includes: the terminal device measures a reference signal received on at least one second antenna port indicated by the first sub-configuration information in a first time unit, and measures a reference signal received on at least one second antenna port indicated by the second sub-configuration information in a second time unit, and the first time unit and the second time unit are not the same time unit.

[0055] In combination with the fourth aspect, in certain implementations of the fourth aspect, the time unit includes a time slot.

[0056] The beneficial effects of the fourth aspect refer to the description of the third aspect and will not be elaborated here.

[0057] In a fifth aspect, a communication device is provided, including: a processing unit, used to determine CSI reporting configuration information; a transceiver unit, used to send CSI reporting configuration information to a terminal device, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each sub-configuration information corresponds to M CSI resources, each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, each sequence identifier indicates a port sequence, M is an integer greater than or equal to 1, and N is an integer greater than 1; the transceiver unit is also used to send a reference signal to the terminal device on the M CSI resources.

[0058] The transceiver unit can perform the reception and transmission processing in the aforementioned first aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned first aspect.

[0059] In a sixth aspect, a communication device is provided, including: a transceiver unit, used to receive CSI reporting configuration information from a base station, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each sub-configuration information corresponds to M CSI resources, each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, each sequence identifier indicates a port sequence, M is an integer greater than or equal to 1, and N is an integer greater than 1; the transceiver unit is also used to receive a reference signal on the M CSI resources; a processing unit, used to measure the reference signal and determine the CSI.

[0060] The transceiver unit can perform the reception and transmission processing in the aforementioned second aspect, and the processing unit can perform other processing except reception and transmission in the aforementioned second aspect.

[0061] In the seventh aspect, a communication device is provided, including: a processing unit, used to determine channel state information CSI reporting configuration information; a transceiver unit, used to send CSI reporting configuration information to a terminal device, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes M port indication information and N sub-configuration information, the port indication information corresponds to the CSI resources one-to-one, each sub-configuration information corresponds to M CSI resources, the port indication information is used to indicate at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port, each sequence identifier indicates a port sequence, the first antenna port is used for channel measurement, the network energy saving configuration information is used to indicate at least one second antenna port, the second antenna port is the antenna port turned on by the base station when the base station sends a physical downlink shared channel to the terminal device, M is an integer greater than or equal to 1, and N is an integer greater than 1; the transceiver unit is also used to send a reference signal to the terminal device on the M CSI resources with at least one first port sequence, the first port sequence belongs to the port sequence indicated by the port indication information, and the antenna port in the first port sequence is the second antenna port.

[0062] The transceiver unit can perform the receiving and sending processing in the third aspect, and the processing unit can perform other processing except receiving and sending in the third aspect.

[0063] In an eighth aspect, a communication device is provided, including: a transceiver unit, used to receive channel state information CSI reporting configuration information from a base station, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes M port indication information and N sub-configuration information, the port indication information corresponds to the CSI resource one-to-one, each sub-configuration information corresponds to M CSI resources, the port indication information is used to indicate at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port, each sequence identifier indicates a port sequence, the first antenna port is used for channel measurement, the network energy-saving configuration information is used to indicate at least one second antenna port, the second antenna port is the antenna port turned on by the base station when the base station sends a physical downlink shared channel to the terminal device, M is an integer greater than or equal to 1, and N is an integer greater than 1; a processing unit, used to measure a reference signal on at least one first port sequence on the M CSI resources, the first port sequence belongs to the port sequence indicated by the port indication information, and the antenna port in the first port sequence is the second antenna port.

[0064] The transceiver unit can perform the receiving and sending processing in the fourth aspect, and the processing unit can perform other processing except receiving and sending in the fourth aspect.

[0065] In the ninth aspect, a communication device is provided, comprising a transceiver, a processor and a memory, wherein the processor is used to control the transceiver to receive and send signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device executes the method in any aspect of the first to fourth aspects above and any possible implementation method.

[0066] Optionally, the number of the processors is one or more, and the number of the memories is one or more.

[0067] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0068] Optionally, the communication device further includes a transmitter (transmitter) and a receiver (receiver).

[0069] In the tenth aspect, a communication system is provided, including a base station and a terminal device; the base station is used to execute the method in any possible implementation of the above-mentioned first aspect or the third aspect, and the terminal device is used to execute the method in any possible implementation of the above-mentioned second aspect or the fourth aspect.

[0070] In the eleventh aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program or code, and when the computer program or code is run on a computer, the computer executes the method in any aspect of the first to fourth aspects above and any possible implementation manner.

[0071] In the twelfth aspect, a chip is provided, comprising at least one processor, wherein the at least one processor is coupled to a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device equipped with the chip system executes any one of the above-mentioned first to fourth aspects and any possible implementation method.

[0072] The chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0073] In the thirteenth aspect, a computer program product is provided, wherein the computer program product comprises: a computer program code, and when the computer program code is executed by a device, the device executes the method in any aspect of the first to fourth aspects and any possible implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 It is a schematic diagram of the architecture of the communication system used in the embodiment of the present application.

[0075] Figure 2 It is a flow chart of a communication method provided in an embodiment of the present application.

[0076] Figure 3 This is a flowchart of another communication method provided in an embodiment of the present application.

[0077] Figure 4 This is a schematic diagram of time-division reporting of CSI provided in an embodiment of the present application.

[0078] Figure 5 It is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application.

[0079] Figure 6 It is a schematic block diagram of a communication device 2000 provided in an embodiment of the present application.

[0080] Figure 7 It is a schematic block diagram of the chip system 3000 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0081] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0082] Figure 1 Schematic diagram of the architecture of the communication system used in the embodiment of the present application. Figure 1 As shown, the communication system includes a wireless access network 110 and a core network 120. Optionally, the communication system 100 may also include the Internet 130. The wireless access network 110 may include at least one wireless access network device (such as 111a and 111b in the figure), and may also include at least one terminal device (such as 112a-112j in the figure). The terminal device is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device may be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device may be integrated on the same physical device, or the functions of some core network devices and some wireless access network devices may be integrated on one physical device. Terminals and terminals and wireless access network devices may be connected to each other by wire or wireless means. The figure is only a schematic diagram, and the communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in the figure.

[0083] Radio access network equipment is the access equipment that terminal equipment uses to access the communication system wirelessly. Radio access network equipment can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in the fifth generation (5G) mobile communication system, a next generation base station in the sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system; it can also be a module or unit that completes some functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence layer protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the functions of part of the physical layer or all of the physical layer. For the specific description of the above-mentioned various protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The wireless access network device can be a macro base station (such as 111a in the figure), a micro base station or an indoor station (such as 111b in the figure), or a relay node or a donor node. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device. For the convenience of description, the following description takes the base station as an example of the wireless access network device.

[0084] The terminal device is a device with wireless transceiver function, which can send signals to the base station or receive signals from the base station. The terminal device can also be called a terminal, user equipment (UE), mobile station, mobile terminal, etc. The terminal device can be widely used in various scenarios, for example, device-to-device (D2D), vehicle to everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0085] Base stations and terminal devices can be fixed or mobile. Base stations and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on airplanes, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of base stations and terminal devices.

[0086] The roles of the base station and the terminal device can be relative. For example, the helicopter or drone 112i in the figure can be configured as a mobile base station. For the terminal devices 112j that access the wireless access network 110 through 112i, the terminal device 112i is a base station; but for the base station 111a, 112i is a terminal device, that is, 111a and 112i communicate through the wireless air interface protocol. Of course, 111a and 112i can also communicate through the interface protocol between base stations. In this case, relative to 111a, 112i is also a base station. Therefore, base stations and terminal devices can be collectively referred to as communication devices. 111a and 111b in the figure can be referred to as communication devices with base station functions, and 112a-112j in the figure can be referred to as communication devices with terminal functions.

[0087] Base stations and terminal devices, base stations and base stations, and terminal devices and terminal devices can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0088] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal device may also be performed by a module (such as a chip or a modem) in the terminal device, or by a device including the terminal function.

[0089] In order to facilitate understanding of the embodiments of the present application, the terms involved in the embodiments of the present application are briefly explained below.

[0090] 1. Channel State Information Report (CSI report):

[0091] Channel state information report can also be referred to as CSI reporting. In a wireless communication system, information used to describe the channel properties of a communication link reported by a receiving end (such as a terminal device) to a transmitting end (such as a network device). CSI may include, but is not limited to, precoding matrix indicator (PMI), rank indication (RI), channel quality indicator (CQI), channel state information reference signal (CSI-RS) resource indicator (CSI-RS resource indicator, CRI) and layer indicator (LI), etc. It should be understood that the specific contents of the CSI listed above are only exemplary and should not constitute any limitation to the present application. CSI may include one or more of the items listed above, and may also include other information used to characterize CSI in addition to the above-mentioned information, which is not limited to the present application.

[0092] Take the example of a terminal device reporting CSI to a network device. The terminal device can report one or more CSIs within a time unit (such as a time slot), and each CSI can correspond to a configuration condition for CSI reporting. The configuration condition for the CSI report can be determined, for example, by high-level signaling (such as an information element (IE) CSI reporting configuration (CSI-reporting config) in a radio resource control (resource control, RRC) message). The CSI reporting configuration can be used to indicate the time domain behavior, bandwidth, and format corresponding to the reporting quantity of the CSI report. Among them, the time domain behavior includes, for example, periodic, semi-persistent, and aperiodic. The terminal device can generate a CSI based on a CSI reporting configuration.

[0093] The base station can be configured to allow the terminal device to report PMI. For example, the terminal device is configured to report CRI, RI, PMI and CQI in the CSI report, that is, CRI-RI-PMI-CQI is configured in the CSI report. The base station sends CSI-RS without precoding, and the terminal device measures the CSI-RS to obtain RI, PMI and CQI, and then reports it to the base station. The role of CRI is to indicate which CSI-RS the CSI reported by the terminal device is based on, because the CSI-RSresource set associated with the CSI report can contain multiple CSI-RS. After the base station receives the CSI reported by the terminal device, the base station will select the appropriate PMI and CQI for scheduling based on the CRI, RI, PMI and CQI reported by the terminal device when scheduling PDSCH subsequently.

[0094] The base station can also configure the terminal device not to report PMI, for example, by configuring cri-RI-CQI in the CSI report. The base station sends a precoded CSI-RS, which can be specifically obtained by the base station through the uplink SRS. UL , and then according to the reciprocity of the uplink and downlink channels, the downlink channel H is obtained DL , and then the downlink precoding matrix W can be obtained. The base station then applies the downlink precoding matrix to the CSI-RS, and then sends the CSI-RS. The terminal device measures the CSI-RS to obtain the RI and CQI, and then reports the CRI, RI, and CQI to the base station. When scheduling PDSCH, the base station selects the appropriate PMI and CQI for scheduling based on the CRI, RI, and CQI reported by the terminal device.

[0095] When configuring cri-RI-CQI, the base station may also indicate the port used for measurement through RRC signaling non-PMI-PortIndication. Non-PMI-PortIndication specifically indicates a port sequence. For example, the sequence is as follows:

[0096]

[0097] in, is the CSI-RS port associated with rank v. For example, the CSI-RS port associated with rank v=1 CSI-RS port associated with rank v=2 0,1; rank v=3 associated CSI-RS port 0, 3, 4. The terminal device can only select one rank value to report. When the rank v measured by the UE is 2, the CSI-RS port To obtain CQI. P is the number of antenna ports of CSI-RS, P = {1, 2, 4, 8}.

[0098] The non-PMI-PortIndication is configured for each resource, that is, different CSI-RS resources can have different port sequences. If not configured, the CSI-RS ports associated with rank v The default is {0,1,…,v-1}, v={1,2,…,P}.

[0099] 2. Network energy saving (NES):

[0100] Antenna port refers to the logical antenna port, not the actual physical antenna. On the same antenna port, the channel on one symbol can be inferred from the channel on another symbol. The antenna port number of CSI-RS can be 3000+i, 0≤i≤31. For CSI-RS, the antenna port number of CSI-RS can also be simply represented by i. The antenna port number of the demodulation reference signal (DMRS) of PDSCH can be 1000+j, 0≤j≤11, and i and j are both integers. For PDSCH, the antenna port number of PDSCH can also be simply represented by j.

[0101] There are two types of energy-saving technologies related to spatial domain (SD) in network energy saving NES: one is to completely turn off the antenna port to save energy. This mode can be called type 1SD adaptation. For example, if antenna port 0 is sent through X physical antennas, type 1SD can be understood as, if antenna port 0 is to be turned off, it means turning off the X physical antennas corresponding to antenna port 0, and the corresponding antenna port 0 is also turned off, X is a positive integer. In type 1SD adaptation, the antenna port turned off can be the antenna port of PDSCH.

[0102] Another way is to turn off some of the physical antennas corresponding to the antenna port to save energy. This mode can be called type 2 SD adaptation. For example, if half of the physical antennas on antenna port 0 are turned off and the other half are not turned off, the signal on antenna port 0 can still be sent, but half of the antennas are used less.

[0103] It should be pointed out that the above terms or technologies belong to the prior art and are not limited thereto.

[0104] To facilitate understanding of the embodiments of the present application, the following points are explained:

[0105] First, in this application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0106] Second, in this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b and c. Where a, b and c can be single or multiple, respectively.

[0107] Third, in the present application, "first", "second" and various numerical references are used to distinguish for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, different messages are distinguished, rather than used to describe a specific order or sequence. It should be understood that the objects described in this way can be interchanged where appropriate so as to be able to describe solutions other than the embodiments of the present application.

[0108] Fourth, in this application, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0109] Fifth, in this application, "used for indication" may include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used for indicating A, it may include that the indication information directly indicates A or indirectly indicates A, but it does not mean that the indication information must carry A.

[0110] Sixth, in this application, "protocol" may refer to a standard protocol in the field of communications, such as a 5G protocol, a new radio (NR) protocol, and related protocols used in future communication systems, which are not limited in this application. "Predefined" may include pre-definition, such as protocol definition. "Preconfiguration" may be implemented by pre-saving corresponding codes, tables, or other methods that can be used to indicate relevant information in the device, and this application does not limit its specific implementation method.

[0111] Seventh, in this application, "communication" can also be described as "data transmission", "information transmission", "data processing", etc. "Transmission" includes "sending" and "receiving".

[0112] The communication method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. The embodiment provided by the present application can be applied to any communication scenario where a transmitting device and a receiving device communicate, such as the above Figure 1 In the communication system shown.

[0113] Figure 2 It is a flowchart of a communication method 200 provided in an embodiment of the present application.

[0114] S210, the base station sends CSI reporting configuration information to the terminal device, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each sub-configuration information corresponds to M CSI resources, each sub-configuration information indicates at least one sequence identifier and at least one port sequence, each port sequence includes at least one antenna port, each sequence identifier indicates a port sequence, M is an integer greater than or equal to 1, and N is an integer greater than 1.

[0115] The base station may send CSI reporting configuration information to the terminal device via radio resource control (RRC) signaling.

[0116] In the present application, the sequence identifier may include a rank, and the number of antenna ports included in the port sequence corresponding to the rank is equal to the value of the rank.

[0117] In the embodiment of the present application, the sub-configuration information may explicitly or implicitly indicate at least one sequence identifier and at least one port sequence.

[0118] In a possible implementation, the sub-configuration information explicitly indicates at least one sequence identifier and at least one port sequence, and the sub-configuration information includes: at least one sequence identifier and at least one port sequence. By explicitly indicating the port sequence to be measured, the terminal device does not need to make further judgments, thereby saving computing resources of the terminal device and improving computing efficiency of the terminal device.

[0119] In a possible implementation, the sub-configuration information implicitly indicates at least one sequence identifier and at least one port sequence, and the sub-configuration information includes: at least one antenna port. Specifically, assuming that the number of antenna ports in the sub-configuration information is m, and the antenna ports are arranged in a default order of p0, p1, p2, ..., p m-1 , the sequence identifiers are 1 to m, and the sequence identifier is v, which corresponds to the first v antenna ports. That is, when the sequence identifier is 1, the corresponding port sequence is {p0}, when the sequence identifier is 2, the corresponding port sequence is {p0, p1}, when the sequence identifier is 3, the corresponding port sequence is {p0, p1, p2}, and so on. When the sequence identifier is m, the corresponding port sequence is {p0, p1, p2...p m-1 The default order may be specified in the protocol, such as a small-to-large order or a large-to-small order, or may be pre-set in the base station and the terminal device, which is not limited in this application.

[0120] In particular, the antenna ports indicated to be turned on by the network energy-saving configuration information may be sorted in a default order to obtain sorted p0, p1, p2, ..., p m-1, m is the number of antenna ports turned on, where the network energy-saving configuration information indicates that the antenna port turned on is the antenna port of the CSI-RS used for CSI measurement, which can also be understood as the antenna port turned on when the base station sends PDSCH, because they correspond to the same physical antenna. For example, the network energy-saving configuration information includes a bitmap, where 1 in the bitmap indicates turned on and 0 indicates turned off. Assuming that the CSI-RS has 8 ports, the bitmap is 10001000, and the antenna port number of the CSI-RS corresponds to the antenna ports 0 and 4 being turned on, then m=2, and after sorting the antenna port numbers from small to large, p0=0, p1=4, and the corresponding port sequence when the sequence identifier is 1 is {0}, and the corresponding port sequence when the sequence identifier is 2 is {0, 4}. The sequence identifier can be a rank. When the rank is 1, the terminal device uses port 0 to measure CSI and obtains CQI; when the rank is 2, the terminal device uses port 0,4 to measure CSI and obtain CQI;

[0121] Exemplarily, a possible situation of CSI reporting (CSI Report) configuration information is as follows, wherein the CSI reporting configuration information indicates that the terminal device does not report PMI (i.e., cri-RI-CQI), and the CSI reporting configuration information is set to correspond to 2 CSI resources (CSI-RS resource0 and CSI-RS resource 1), corresponding to two sub-configurations (Sub-configuration A and Sub-configuration B), and the 2 CSI-RS resources are set to have 8 antenna ports, and the CSI reporting configuration information indicates at least one sequence identifier and at least one port sequence through port indication information (PortIndexFor8Ranks).

[0122] CSI-Report#1(cri-RI-CQI)

[0123] The CSI-RS resource set includes two resources, CSI-RS resource 0, 1

[0124] CSI-RS resource 0 (8 ports)

[0125] CSI-RS resource 1 (8 ports)

[0126] Sub-configuration A

[0127] Port 0~3(turn on),Port 4~7(turn off)

[0128] PortIndexFor8Ranks, which is for CSI-RS resource 0. For example, the configuration is

[0129]

[0130] PortIndexFor8Ranks, which is for CSI-RS resource 1. For example, the configuration is

[0131]

[0132] Sub-configuration B

[0133] Port 0~3(turn off), Port 4~7(turn on)

[0134] PortIndexFor8Ranks, which is configured in B for CSI-RS resource 0. For example, the configuration is

[0135]

[0136] PortIndexFor8Ranks, which is configured in B for CSI-RS resource 1. For example, the configuration is

[0137]

[0138] In the above example, the port indication information (PortIndexFor8Ranks) in the CSI reporting configuration information is determined by the base station according to the network energy-saving configuration information, and it can also be understood that the network energy-saving configuration information is determined according to the port indication information, or is determined together, which is not limited here. Specifically, the network energy-saving configuration information indicates the antenna port that the base station turns on when sending a physical downlink shared channel to the terminal device. Exemplarily, the network energy-saving configuration information includes a bitmap, and 1 in the bitmap indicates on, and 0 indicates off. Assume that the base station has 8 ports and the bitmap is 10001000. The bitmap indicates that when the base station sends a physical downlink shared channel to the terminal device, the antenna port numbers of the CSI-RS corresponding to antenna ports 0 and 4 are turned on, and other antenna ports are turned off. The base station determines the port indication information according to the network energy-saving configuration information, and the antenna ports in the port sequence in the port indication information are all antenna ports turned on in the network energy-saving configuration information.

[0139] Exemplarily, the sub-configuration information may include port indication information. The port indication information (PortIndexFor8Ranks) indicates at least one sequence identifier and at least one port sequence. Specifically, one sub-configuration information may include M port indication information, and the M port indication information corresponds to M CSI-RS resources one by one.

[0140] In a possible implementation, the sub-configuration information may further include network energy-saving configuration information, where the network energy-saving configuration information indicates an antenna port that is turned on when at least one base station sends a PDSCH to a terminal device.

[0141] In the above example, the CSI reporting configuration information includes network energy-saving configuration information. Since the network energy-saving configuration information acts on the base station, the port indication information in this embodiment is determined based on the network energy-saving configuration information. Therefore, the CSI reporting configuration information may not include the network energy-saving configuration information to save signaling overhead.

[0142] S220, the base station sends a reference signal to the terminal device on M CSI resources, that is, sends a channel state information-reference signal (CSI-RS) for CSI measurement to the terminal device on M CSI resources.

[0143] It should be noted that the CSI-RS resource may also be referred to as a channel measurement pilot.

[0144] The transmitted CSI-RS includes three types, namely periodic, semi-persistent and aperiodic.

[0145] Semi-persistent CSI-RS can be activated through MAC CE (Media Access Control control element), and then CSI-RS is sent periodically. Aperiodic CSI-RS can be activated through DCI, and then CSI-RS is sent.

[0146] S230, the terminal device measures a reference signal from the base station based on the CSI reporting configuration information to determine the channel state information CSI.

[0147] Specifically, the terminal device measures the corresponding antenna port according to the port sequence indicated in the CSI reporting configuration information to obtain the corresponding CSI.

[0148] In the embodiment of the present application, CSI includes CRI, RI and CQI. For each sub-configuration, the UE can measure and obtain the corresponding CSI. The UE can also measure only the sub-configuration that needs to be reported indicated by the base station, and then obtain the corresponding CSI. The indication information includes DCI or MAC CE.

[0149] S240, the terminal device reports CSI to the base station.

[0150] There are three types of CSI reporting, namely periodic, semi-continuous and aperiodic reporting.

[0151] If CSI is reported periodically, the terminal device reports via the physical uplink control channel PUCCH.

[0152] If CSI is reported semi-continuously via PUCCH, a MAC-CE message is also required to activate the terminal device to report CSI.

[0153] If CSI is reported semi-continuously via PUSCH, it is also necessary to activate the terminal device via DCI to report CSI.

[0154] If CSI is reported non-periodically, DCI is also required to activate the terminal device to report CSI.

[0155] It should be noted that in the embodiment of the present application, activating CSI reporting may also be referred to as triggering CSI reporting. The embodiment of the present application does not make any specific limitation on this name, as long as the meaning expressed is the same.

[0156] It should be noted that in the protocol, the three types of CSI-RS resources and CSI reporting cannot be combined arbitrarily. The combination of CSI-RS resource delivery and CSI reporting types is shown in Table 1.

[0157] Table 1

[0158] Periodic CSI reporting Semi-continuous CSI reporting Aperiodic CSI reporting Periodic CSI-RS Can be combined Can be combined Can be combined Semi-persistent CSI-RS Not combinable Can be combined Can be combined Aperiodic CSI-RS Not combinable Not combinable Can be combined

[0159] S250, the base station sends a PDSCH to the terminal device based on the CSI from the terminal device.

[0160] In an embodiment of the present application, the CSI reporting configuration information includes N sub-configuration information, and each sub-configuration information includes port indication information, the port indication information indicates at least one sequence identifier and at least one port sequence, the terminal device can receive the reference signal on the CSI resource under the configuration according to the sub-configuration information, and measure the corresponding antenna port according to the sequence identifier and port sequence indicated by the port indication information in the sub-configuration information, and then the terminal device can report the CSI under different sub-configurations to the base station with the port sequence as the granularity, thereby improving the flexibility of reporting CSI. In addition, in an embodiment of the present application, the antenna port in the sub-configuration information is the same as the physical antenna corresponding to the antenna port turned on by the base station when the base station sends a physical downlink shared channel to the terminal device, but because there may be differences in the numbering rules of the antenna port, the antenna port number in the sub-configuration information may be different from the antenna port number turned on by the base station when the base station sends a physical downlink shared channel to the terminal device.

[0161] In the above example, the port sequence in the CSI reporting configuration information received by the terminal device is determined by the base station after considering the network energy-saving configuration information. The terminal device does not need to make additional judgments, but such signaling overhead is relatively large.

[0162] Figure 3 It is a flowchart of another communication method 300 provided in an embodiment of the present application.

[0163] S310, the base station sends CSI configuration information to the terminal device, the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes M port indication information and N sub-configuration information, the port indication information corresponds to the CSI resource one-to-one, each sub-configuration information corresponds to M CSI resources, the port indication information is used to indicate at least one sequence identifier and at least one port sequence, each port sequence includes at least one first antenna port for channel measurement, each sequence identifier indicates a port sequence, and the sub-configuration information is used to indicate at least one second antenna port, M is an integer greater than or equal to 1, and N is an integer greater than 1.

[0164] The base station can send CSI reporting configuration information to the terminal device through RRC signaling.

[0165] In the present application, the sequence identifier may include a rank, and the number of antenna ports included in the port sequence corresponding to the rank is equal to the value of the rank.

[0166] In the embodiment of the present application, the port indication information may explicitly or implicitly indicate at least one sequence identifier and at least one port sequence.

[0167] In a possible implementation manner, the port indication information explicitly indicates at least one sequence identifier and at least one port sequence, and the port indication information includes: at least one sequence identifier and at least one port sequence.

[0168] In a possible implementation, the port indication information implicitly indicates at least one sequence identifier and at least one port sequence, and the port indication information includes: at least one first antenna port. Specifically, assuming that the number of first antenna ports in the port indication information is m, and the antenna ports are arranged in a default order of p0, p1, p2, ..., p m-1 , the sequence identifiers are 1 to m, and the sequence identifier v corresponds to the first v antenna ports. The corresponding port sequence when the sequence identifier is 1 is {p0}, the corresponding port sequence when the sequence identifier is 2 is {p0, p1}, and so on. The corresponding port sequence when the sequence identifier is m is {p0, p1, p2...p m-1The default order may be specified in the protocol, such as from small to large, or from large to small, or may be pre-set in the base station and terminal device, which is not limited in this application. For example, the number of CSI-RS antenna ports is 4, that is, P = 4 = m. The antenna ports of CSI-RS are sorted in order from small to large, and p0, p1, p2, and p3 are 0, 1, 2, and 3 respectively. CSI-RS ports associated with sequence identifier v The default is {0,1,…,v-1}. v={1,2,…,4}. Then when the sequence identifier is 1, the corresponding port sequence is {0}, when the sequence identifier is 2, the corresponding port sequence is {0,1}, when the sequence identifier is 3, the corresponding port sequence is {0,1,2}, and when the sequence identifier is 4, the corresponding port sequence is {0,1,2,3}.

[0169] In a possible implementation, the sub-configuration information includes energy-saving configuration information, and the second antenna port indicated in the sub-configuration information is the antenna port turned on by the base station when the base station sends the PDSCH to the terminal device.

[0170] Exemplarily, a possible situation of CSI reporting (CSI Report) configuration information is as follows, wherein the CSI reporting configuration information indicates that the terminal device does not report PMI, i.e. (cri-RI-CQI), and the CSI reporting configuration information is set to correspond to 2 CSI resources (CSI-RS resource 0 and CSI-RS resource 1), corresponding to two sub-configurations (Sub-configuration A and Sub-configuration B) information, and it is set that there are 8 antenna ports on the CSI-RS, and the CSI reporting configuration information indicates at least one sequence identifier and at least one port sequence through the port indication information (PortIndexFor8Ranks).

[0171] CSI-Report#1(cri-RI-CQI)

[0172] The CSI-RS resource set includes two resources, CSI-RS resource 0, 1

[0173] CSI-RS resource 0 (8 ports)

[0174] PortIndexFor8Ranks

[0175] Rank v=4, indicating 4 ports is {4,5,6,7}

[0176] Rank v=3, indicating 3 ports is {4,5,6}

[0177] Rank v=2, indicating 2 ports is {1,2}

[0178] Rank v=1, indicating 1 port For {1}

[0179] CSI-RS resource 1 (8 ports)

[0180] PortIndexFor8Ranks

[0181] Rank v=3, indicating 3 ports is {4,5,7}

[0182] Rank v=2, indicating 2 ports is {0,1}

[0183] Rank v=1, indicating 1 port For {0}

[0184] Sub-configuration A

[0185] Port 0~3(turn on),Port 4~7(turn off)

[0186] Sub-configuration B

[0187] Port 0~3(turn off), Port 4~7(turn on)

[0188] S320, the base station sends a reference signal or CSI-RS resources to the terminal device in M ​​CSI resources. Please refer to the description of S220 and will not be repeated here.

[0189] Optionally, S330, the terminal device determines at least one first port sequence, the first port sequence belongs to the port sequence indicated by the port indication information, and the antenna port in the first port sequence is the second antenna port.

[0190] In the embodiment of the present application, the base station does not process according to the port indication information, so the antenna ports in some port sequences in the port indication information do not belong to the antenna ports enabled in the sub-configuration information, and the port indication information and the sub-configuration information will conflict, and the subsequent base station cannot use the sub-configuration information for port configuration. In order to solve this problem, the terminal device makes a judgment based on the port indication information and the sub-configuration information to determine at least one first port sequence, the first port sequence belongs to the port sequence indicated by the port indication information, and the antenna port in the first port sequence is the second antenna port. Taking CSI-Report#1 (cri-RI-CQI) in S310 as an example, for CSI-RS resource 0, according to the sub-configuration information Sub-configuration A, the first port sequence includes Rank v=1, indicating 1 port {1} and Rank v=2, indicating 2 ports {1,2}; for CSI-RS resource 0, according to sub-configuration information Sub-configurationB, the first port sequence includes Rank v=3, indicating 3 ports {4,5,6} and Rank v=4, indicating 4 ports {4,5,6,7}; for CSI-RS resource 1, according to sub-configuration information Sub-configuration A, the first port sequence includes Rank v=1, indicating 1 port {0} and Rank v=2, indicating 2 ports {1,2}; for CSI-RS resource 1, according to sub-configuration information Sub-configurationB, the first port sequence includes Rank v=3, indicating 3 ports is {4,5,7}. For Sub-configuration A, if CRI is resource 0 or 1, the rank reported by the UE can be 1 or 2, and 1 bit is required to indicate, that is, the RI is 1 bit; for Sub-configuration B, if CRI is resource0, the rank reported by the UE can be 3 or 4, and 1 bit is required to indicate, that is, the RI is 1 bit; if CRI is resource 1, the rank reported by the UE can only be 3, and no bit is required to indicate, that is, the RI is 0 bit. In order to ensure that the base station knows the number of RI bits regardless of the CRI, the number of RI bits needs to be larger, that is, 1 bit. That is, for a certain Sub-configuration, the number of RI bits is the maximum value of the number of RI bits corresponding to each CSI-RS resource.

[0191] S340, the terminal device measures a reference signal from the base station. Specifically, the terminal device measures a reference signal received by an antenna port in at least one first port sequence to obtain CSI. See the description of S230, which will not be repeated here.

[0192] S350, the terminal device reports CSI to the base station. Please refer to the description of S240 and will not be repeated here.

[0193] S360, the base station sends a PDSCH to the terminal device based on the CSI from the terminal device.

[0194] In an embodiment of the present application, the base station provides the terminal device with port indication information and sub-configuration information, so that the terminal device can determine the port sequence to be measured from the port indication information according to different sub-configuration requirements, so that the CSI under different sub-configurations can be reported to the base station with the port sequence as the granularity, thereby improving the flexibility of reporting CSI. In addition, in an embodiment of the present application, the base station has an energy-saving configuration, and the sub-configuration information includes energy-saving configuration information. The second antenna port indicated in the sub-configuration information is the antenna port turned on by the base station when the base station sends a physical downlink shared channel to the terminal device. The embodiment of the present application can perform channel measurement on the antenna port for different energy-saving configurations, so that the base station can use the energy-saving configuration when sending the physical downlink shared channel to achieve energy saving of the base station.

[0195] exist Figure 2 and Figure 3 In an embodiment, there are multiple sub-configuration information for a CSI resource configuration, each sub-configuration information corresponds to a network energy-saving configuration information, that is, corresponds to an energy-saving configuration of the base station, and the antenna ports indicated by the network energy-saving configuration information corresponding to different sub-configuration information may overlap.

[0196] Exemplarily, sub-configuration information Sub-configuration A indicates that antenna ports 0-7 are turned on; sub-configuration information Sub-configuration B indicates that antenna ports 0-3 are turned on and 4-7 are turned off; sub-configuration information Sub-configuration C indicates that antenna ports 4-7 are turned on and 0-3 is turned off. Among them, there is overlap between the antenna ports turned on in Sub-configuration A and Sub-configuration B, and there is overlap between the antenna ports turned on in Sub-configuration A and Sub-configuration C. When the base station uses precoding to send CSI-RS, there are multiple precoding matrices for the overlapping antenna ports, and the base station cannot select, resulting in failure to send normally. A possible solution is that for semi-continuous reporting or non-periodic CSI reporting activated by DCI, it is not allowed to report the CSI of Sub-configuration A+Sub-configuration B at the same time, nor is it allowed to report the CSI of Sub-configuration A+Sub-configuration C at the same time. That is, when the terminal device receives a DCI, and the CSI request field in the DCI triggers the reporting of these Sub-configurations, the terminal device will treat it as a false alarm. That is, when the terminal device reports the CSI in the Sub-configuration, it does not expect the enabled antenna ports of these reported Sub-configurations to overlap. For example, if the terminal device wants to report the CSI of two Sub-configurations, it does not expect the enabled antenna ports of one Sub-configuration to overlap with the enabled antenna ports of another Sub-configuration. If the CSI of multiple Sub-configurations is to be reported, there must be no overlap between the various Sub-configurations.

[0197] Among them, the above-mentioned solution can be that after the base station detects the overlapping situation, it instructs the terminal device not to allow the sub-configuration information corresponding to the CSI to be reported. For example, the base station sends a second information to the terminal device to instruct the terminal device not to report / measure the antenna ports in the first sub-configuration information and the second sub-configuration information, and there is an overlap between the antenna ports corresponding to the first sub-configuration information and the second sub-configuration information.

[0198] It may also be specified in the protocol or pre-configured in the terminal device, and the terminal device may actively not report the CSI corresponding to the sub-configuration information where the overlapping situation occurs after detecting the overlapping situation.

[0199] A possible solution is to allow CSI reporting of Sub-configuration A+Sub-configuration B, then perform time-division measurement and then report the CSI. Figure 4 is a schematic diagram of a time-division reporting CSI provided in an embodiment of the present application, such as Figure 4 As shown, for a periodic CSI-RS, some CSI-RS occasions are associated with Sub-configuration A, and other CSI-RS occasions are associated with Sub-configuration B, so that the base station can use different precodings to send CSI-RS in a time-division manner. The specific association relationship between the CSI-RS occasion and the Sub-configuration can be indicated by the base station, for example, the occasion on the even time slot is associated with Sub-configuration A, and the occasion on the odd time slot is associated with Sub-configuration B. It can also be pre-defined, which is equivalent to one Sub-configuration corresponding to only one CSI-RS resource.

[0200] Among them, the above-mentioned solution can be that after the base station detects the overlap, it instructs the terminal device to measure the CSI corresponding to the overlapping port at different time units. For example, the base station sends a first information to the terminal device to instruct the terminal device to measure the reference signal on the port sequence indicated by the first sub-configuration information at the first time unit, and to measure the reference signal on the port sequence indicated by the second sub-configuration information at the second time unit. The first time unit and the second time unit are different time units, and there is overlap in the antenna ports corresponding to the first sub-configuration information and the second sub-configuration information.

[0201] It may also be specified in the protocol or pre-configured in the terminal device, and the terminal device reports the CSI corresponding to the overlapping port in different time units after detecting the overlap.

[0202] In particular, Figure 2 In the embodiments, the sub-configuration information may implicitly include the network energy-saving configuration information, that is, the base station may not directly send the network energy-saving configuration information to the terminal device. The base station can send indication information to the terminal device when detecting that the antenna ports indicated by the network energy-saving configuration information overlap. Alternatively, the terminal device may detect that the same antenna port exists in different sub-configuration information corresponding to the same CSI resource, and confirm that the network energy-saving configuration information corresponding to the different sub-configuration information overlaps.

[0203] The embodiment of the present application takes into account the overlap of antenna ports indicated by the sub-configuration information, that is, the overlap of ports enabled in the energy-saving configuration of the base station, so that the base station can use different precoding to send CSI-RS, so that the terminal device can measure and obtain CSI, and then report it to the base station, so that the base station can save energy when scheduling PDSCH.

[0204] Combination of the above Figures 1 to 4 , describes in detail the communication method side embodiment of the present application, and will be combined with Figure 5 and Figure 6 , describes in detail the communication device side embodiment of the present application. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0205] Figure 5 1 is a schematic block diagram of a communication device 1000 provided in an embodiment of the present application. Figure 5 As shown, the device 1000 may include a transceiver unit 1010 and a processing unit 1020. The transceiver unit 1010 may communicate with the outside, the processing unit 1020 is used for data processing, and the transceiver unit 1010 may also be called a communication interface or a transceiver unit.

[0206] In one possible design, the device 1000 can implement steps or processes corresponding to those executed by the terminal device in the above method embodiment, wherein the processing unit 1020 is used to execute processing-related operations of the terminal device in the above method embodiment, and the transceiver unit 1010 is used to execute transceiver-related operations of the terminal device in the above method embodiment.

[0207] In another possible design, the device 1000 can implement steps or processes executed by a network device (e.g., a base station) corresponding to the above method embodiments, wherein the transceiver unit 1010 is used to execute transceiver-related operations of the base station in the above method embodiments, and the processing unit 1020 is used to execute processing-related operations of the base station in the above method embodiments.

[0208] It should be understood that the device 1000 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 1000 can be specifically the transmitting end in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the transmitting end in the above-mentioned method embodiment, or the device 1000 can be specifically the receiving end in the above-mentioned embodiment, and can be used to execute the various processes and / or steps corresponding to the receiving end in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.

[0209] The device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the sending end in the above-mentioned method, or the device 1000 of each of the above-mentioned solutions has the function of implementing the corresponding steps performed by the receiving end in the above-mentioned method. The functions can be implemented by hardware, or can be implemented by hardware executing corresponding software. 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 sending 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, respectively performing the transceiver operations and related processing operations in each method embodiment.

[0210] In addition, the transceiver unit may also be a transceiver circuit (for example, it may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit. Figure 5 The device in the embodiment may be a receiving end or a transmitting end in the foregoing embodiment, or may be a chip or a chip system, such as a system on chip (SoC). The transceiver unit may be an input / output circuit or a communication interface. The processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

[0211] Figure 6 2 is a schematic block diagram of a communication device 2000 provided in an embodiment of the present application. Figure 6 As shown, the device 2000 includes a processor 2010 and a transceiver 2020. The processor 2010 and the transceiver 2020 communicate with each other through an internal connection path, and the processor 2010 is used to execute instructions to control the transceiver 2020 to send signals and / or receive signals.

[0212] Optionally, the device 2000 may further include a memory 2030, and the memory 2030 communicates with the processor 2010 and the transceiver 2020 through an internal connection path. The memory 2030 is used to store instructions, and the processor 2010 may execute the instructions stored in the memory 2030.

[0213] In a possible implementation, the apparatus 2000 is used to implement various processes and steps corresponding to the terminal device in the above method embodiment.

[0214] In another possible implementation manner, the apparatus 2000 is used to implement various processes and steps corresponding to the network device (eg, base station) in the above method embodiment.

[0215] It should be understood that the device 2000 can be specifically the transmitting end or the receiving end in the above embodiment, or can be a chip or a chip system. Correspondingly, the transceiver 2020 can be the transceiver circuit of the chip, which is not limited here. Specifically, the device 2000 can be used to execute the various steps and / or processes corresponding to the transmitting end or the receiving end in the above method embodiment.

[0216] Optionally, the memory 2030 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 information about the device type. The processor 2010 may be used to execute instructions stored in the memory, and when the processor 2010 executes instructions stored in the memory, the processor 2010 is used to execute the various steps and / or processes of the above-mentioned method embodiment corresponding to the transmitting end or the receiving end.

[0217] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution. 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 reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0218] It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The processor in the embodiment of the present application can implement or execute the methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined to perform. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0219] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. 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 erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0220] Figure 7 is a schematic block diagram of a chip system 3000 provided in an embodiment of the present application. Figure 7 As shown, the chip system 3000 (or may also be called a processing system) includes a logic circuit 3010 and an input / output interface (input / output interface) 3020.

[0221] Among them, the logic circuit 3010 can be a processing circuit in the chip system 3000. The logic circuit 3010 can be coupled to the storage unit and call the instructions in the storage unit so that the chip system 3000 can implement the methods and functions of each embodiment of the present application. The input / output interface 3020 can be an input / output circuit in the chip system 3000, outputting information processed by the chip system 3000, or inputting data or signaling information to be processed into the chip system 3000 for processing.

[0222] As a solution, the chip system 3000 is used to implement the operations performed by the terminal device in the above method embodiments.

[0223] For example, the logic circuit 3010 is used to implement the processing-related operations performed by the terminal device in the above method embodiment, such as Figure 2 and Figure 3 The processing-related operations performed by the terminal device in the embodiment shown; the input / output interface 3020 is used to implement the sending and / or receiving-related operations performed by the terminal device in the above method embodiment, such as Figure 2 and Figure 3 The terminal device in the illustrated embodiment performs operations related to sending and / or receiving.

[0224] For another example, the logic circuit 3010 is used to implement the processing-related operations performed by the network device in the above method embodiment, such as Figure 2 and Figure 3 The processing-related operations performed by the base station in the embodiment shown; the input / output interface 3020 is used to implement the sending and / or receiving-related operations performed by the network device in the above method embodiment, such as Figure 2 and Figure 3 The base station in the illustrated embodiment performs operations related to transmission and / or reception.

[0225] An embodiment of the present application also provides a computer-readable storage medium on which computer instructions for implementing the methods executed by a terminal device or a base station in the above-mentioned method embodiments are stored.

[0226] An embodiment of the present application also provides a computer program product, comprising instructions, which, when executed by a computer, implement the methods performed by a terminal device or a base station in the above-mentioned method embodiments.

[0227] An embodiment of the present application also provides a communication system, which includes the terminal device and the base station in the above embodiments.

[0228] The explanation of the relevant contents and beneficial effects of any of the above-mentioned devices can be referred to the corresponding method embodiments provided above, which will not be repeated here.

[0229] Those of ordinary skill in the art will appreciate that the units 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 to be beyond the scope of this application.

[0230] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0231] In the several embodiments provided in the present 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 only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point 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 units, which can be electrical, mechanical or other forms.

[0232] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0233] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0234] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods 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.

[0235] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A communication method, characterized in that: include: Send channel state information CSI reporting configuration information to the terminal device, where the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each of the sub-configuration information corresponds to the M CSI resources, each of the sub-configuration information indicates at least one sequence identifier and at least one port sequence, each of the port sequence includes at least one antenna port, each of the sequence identifiers indicates one of the port sequences, M is an integer greater than or equal to 1, and N is an integer greater than 1; A reference signal is sent on the M CSI resources.

2. The method according to claim 1, characterized in that The antenna ports included in the port sequence belong to the antenna ports that are turned on when sending a physical downlink shared channel to the terminal device.

3. The method according to claim 1 or 2, characterized in that: The sub-configuration information includes: The at least one sequence identifier and the at least one port sequence.

4. The method according to claim 1 or 2, characterized in that: The sub-configuration information includes: At least one antenna port.

5. The method according to any one of claims 1 to 3, characterized in that The sequence identifier includes a rank, and a value of the rank indicates the number of antenna ports in the port sequence indicated by the rank.

6. The method according to any one of claims 1 to 5, characterized in that The N sub-configuration information includes first sub-configuration information and second sub-configuration information, and the port sequence indicated by the first sub-configuration information and the port sequence indicated by the second sub-configuration information include at least one identical antenna port; The method also includes sending first information to a terminal device, wherein the first information is used to instruct the terminal device to measure a reference signal on a port sequence indicated by first sub-configuration information in a first time unit, and to measure a reference signal on a port sequence indicated by second sub-configuration information in a second time unit, wherein the first time unit and the second time unit are different time units.

7. The method according to claim 6, characterized in that The time unit includes a time slot.

8. A communication method, characterized in that: include: Receiving channel state information CSI reporting configuration information from a base station, where the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes N sub-configuration information, each of the sub-configuration information corresponds to the M CSI resources, each of the sub-configuration information indicates at least one sequence identifier and at least one port sequence, each of the port sequences includes at least one antenna port, each of the sequence identifiers indicates one of the port sequences, M is an integer greater than or equal to 1, and N is an integer greater than 1; A reference signal is received on the M CSI resources.

9. The method according to claim 1 or 2, characterized in that: The sub-configuration information includes: The at least one sequence identifier and the at least one port sequence.

10. The method according to claim 8 or 9, characterized in that: The sub-configuration information includes: At least one antenna port.

11. The method according to claim 8 or 9, characterized in that: The sequence identifier includes a rank, and a value of the rank indicates the number of antenna ports in the port sequence indicated by the rank.

12. The method according to any one of claims 8 to 11, characterized in that The N sub-configuration information includes first sub-configuration information and second sub-configuration information, and the port sequence indicated by the first sub-configuration information and the port sequence indicated by the second sub-configuration information include at least one identical antenna port; The method also includes measuring a reference signal on a port sequence indicated by first sub-configuration information at a first time unit, and measuring a reference signal on a port sequence indicated by second sub-configuration information at a second time unit, wherein the first time unit and the second time unit are different time units.

13. The method according to claim 12, characterized in that The time unit includes a time slot.

14. A communication method, characterized in that: include: Send channel state information CSI reporting configuration information to the terminal device, where the CSI reporting configuration information corresponds to M CSI resources, and the CSI reporting configuration information includes M port indication information and N sub-configuration information, where the port indication information corresponds to the CSI resources one-to-one, and each of the sub-configuration information corresponds to the M CSI resources, and the port indication information is used to indicate at least one sequence identifier and at least one port sequence, each of the port sequences includes at least one first antenna port for channel measurement, each of the sequence identifiers indicates a port sequence, and the sub-configuration information is used to indicate at least one second antenna port, where M is an integer greater than or equal to 1, and N is an integer greater than 1; A reference signal is sent on the M CSI resources using at least one first port sequence, where the first port sequence belongs to a port sequence indicated by the port indication information, and an antenna port in the first port sequence is the second antenna port.

15. The method according to claim 14, characterized in that The second antenna port is an antenna port that is turned on when sending a physical downlink shared channel to the terminal device.

16. The method according to claim 14 or 15, characterized in that The port indication information includes: The at least one sequence identifier and the at least one port sequence.

17. The method according to claim 14 or 15, characterized in that The port indication information includes: At least one antenna port.

18. The method according to any one of claims 14 to 17, characterized in that The sequence identifier includes a rank, and a value of the rank indicates the number of antenna ports in the port sequence indicated by the rank.

19. The method according to any one of claims 14 to 18, characterized in that The N sub-configuration information includes first sub-configuration information and second sub-configuration information, and the at least one second antenna port indicated by the first sub-configuration information and the at least one second antenna port indicated by the second sub-configuration information include at least one same antenna port; The method also includes sending first information to a terminal device, wherein the first information is used to instruct the terminal device to measure a reference signal of at least one second antenna port indicated by the first sub-configuration information at a first time unit, and to measure a reference signal of at least one second antenna port indicated by the second sub-configuration information at a second time unit, wherein the first time unit and the second time unit are not the same time unit.

20. The method according to claim 19, characterized in that The time unit includes a time slot.

21. A communication method, characterized in that: include: Receive channel state information CSI reporting configuration information from a base station, where the CSI reporting configuration information corresponds to M CSI resources, the CSI reporting configuration information includes M port indication information and N sub-configuration information, the port indication information corresponds to the CSI resources one-to-one, each of the sub-configuration information corresponds to the M CSI resources, the port indication information is used to indicate at least one sequence identifier and at least one port sequence, each of the port sequence includes at least one first antenna port for channel measurement, each of the sequence identifier indicates a port sequence, the sub-configuration information is used to indicate at least one second antenna port, M is an integer greater than or equal to 1, and N is an integer greater than 1; A reference signal on at least one first port sequence is measured on the M CSI resources, where the first port sequence belongs to the port sequence indicated by the port indication information, and an antenna port in the first port sequence is the second antenna port.

22. The method according to claim 21, characterized in that The second antenna port is an antenna port that is turned on when the base station sends a physical downlink shared channel.

23. The method according to claim 21 or 22, characterized in that The port indication information includes: The at least one sequence identifier and the at least one port sequence.

24. The method according to claim 21 or 22, characterized in that The port indication information includes: At least one antenna port.

25. The method according to any one of claims 21 to 24, characterized in that The sequence identifier includes a rank, and a value of the rank indicates the number of antenna ports in the port sequence indicated by the rank.

26. The method according to any one of claims 21 to 25, characterized in that The N sub-configuration information includes first sub-configuration information and second sub-configuration information, and the at least one second antenna port indicated by the first sub-configuration information and the at least one second antenna port indicated by the second sub-configuration information include at least one same antenna port; The method also includes measuring a reference signal of the at least one second antenna port indicated by the first sub-configuration information at a first time unit, and measuring a reference signal of the at least one second antenna port indicated by the second sub-configuration information at a second time unit, wherein the first time unit and the second time unit are not the same time unit.

27. The method according to claim 26, characterized in that The time unit includes a time slot.

28. A communication device, characterized in that: Comprising a module or unit for performing the method of any one of claims 1 to 7, any one of 8 to 13, any one of 14 to 20, or any one of 21 to 27.

29. A communication device, characterized in that: The communication device includes a processor, the processor is coupled to a memory, the memory stores instructions, and when the instructions are executed by the processor, the communication device performs the method as described in any one of claims 1 to 7, any one of 8 to 13, any one of 14 to 20, or any one of 21 to 27.

30. A communication system, characterized in that: The invention comprises a terminal device and a base station terminal device, wherein the base station is used to execute the method as described in any one of claims 1 to 7, and the terminal device is used to execute the method as described in any one of claims 8 to 13, or the base station is used to execute the method as described in any one of claims 14 to 20, and the terminal device is used to execute the method as described in any one of claims 21 to 27.

31. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store a computer program, which, when executed on a computer, enables the computer to execute the method according to any one of claims 1 to 7, any one of 8 to 13, any one of 14 to 20, or any one of 21 to 27.

32. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory so that a communication device equipped with the chip executes a method as described in any one of claims 1 to 7, any one of 8 to 13, any one of 14 to 20, or any one of 21 to 27.

33. A computer program product, characterized in that When the computer program product is executed by a communication device, the method according to any one of claims 1 to 7, any one of 8 to 13, any one of 14 to 20, or any one of 21 to 27 is implemented.

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