Channel state information processing method, configuration information sending method, and apparatus

Abstract

The present application relates to the technical field of communications, and discloses a channel state information processing method, a configuration information sending method, and an apparatus. The reference signal processing method in an embodiment of the present application comprises: a terminal receives first configuration information sent by a network-side device, and receives, on the basis of the first configuration information, a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2>P1, P1 and P2 are both positive integers, and the first configuration information is used for configuring the first reference signal and the second reference signal; the terminal receives second configuration information, the second configuration information being used for indicating configuration of a CSI report corresponding to the P2 antenna ports; and the terminal determines CSI of the P2 antenna ports on the basis of the first reference signal or the second reference signal, and reports the CSI on the basis of the second configuration information, wherein a mapping relationship exists between the P1 antenna ports and the P2 antenna ports.

Description

Channel state information processing method, configuration information transmission method and apparatus

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application 202510493716.8, filed in China on April 18, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, and specifically relates to a channel state information processing method, a configuration information transmission method and apparatus. Background Technology

[0004] In related technologies, Channel State Information Reference Signal (CSI-RS) is typically used for channel measurement, and the resource overhead of transmitting CSI-RS is proportional to the number of CSI-RS ports. As the size of antenna arrays increases in the future, for example, to 512 ports, the resource overhead will increase significantly. Furthermore, according to the reference signal configuration methods in related technologies, the resource overhead of pilot signals (e.g., CSI-RS) used for channel measurement will also increase significantly, leading to a reduction in time-frequency resources available for communication and ultimately affecting communication capacity.

[0005] Application content

[0006] This application provides a channel state information processing method, a configuration information transmission method, and an apparatus, which can solve the problem of increased resource overhead of pilots used for channel measurement in related technologies.

[0007] Firstly, a channel state information processing method is provided, executed by a terminal, the method comprising:

[0008] The terminal receives first configuration information sent by the network-side device, and receives a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, where P2 > P1 and P1 and P2 are both positive integers. The first configuration information is used to configure the first reference signal and the second reference signal.

[0009] The terminal receives second configuration information, which is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports;

[0010] The terminal determines the CSI of the P2 antenna ports based on the first reference signal or the second reference signal, and reports the CSI based on the second configuration information;

[0011] There is a mapping relationship between the P1 antenna ports and the P2 antenna ports.

[0012] Secondly, a method for sending configuration information is provided, executed by a network-side device, the method comprising:

[0013] The network-side device sends the first configuration information and the second configuration information to the terminal.

[0014] Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports;

[0015] The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

[0016] Thirdly, a channel state information processing apparatus is provided, comprising:

[0017] The first receiving module is used to receive first configuration information sent by the network-side device, and to receive a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, where P2 > P1 and P1 and P2 are both positive integers.

[0018] The second receiving module is used to receive second configuration information, which is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports;

[0019] The first transmitting module is configured to determine the CSI of the P2 antenna ports based on the first reference signal or the second reference signal, and report the CSI based on the second configuration information.

[0020] There is a mapping relationship between the P1 antenna ports and the P2 antenna ports.

[0021] Fourthly, a configuration information transmitting device is provided, comprising:

[0022] The second sending module is used to send the first configuration information and the second configuration information to the terminal.

[0023] Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports;

[0024] The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

[0025] Fifthly, a communication device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0026] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0027] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used for:

[0028] The system receives first configuration information sent by a network-side device, and receives a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, where P2 > P1 and P1 and P2 are both positive integers. The first configuration information is used to configure the first reference signal and the second reference signal; and...

[0029] Receive second configuration information, which is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports;

[0030] The processor is configured to: determine the CSI of the P2 antenna ports based on the first reference signal or the second reference signal; the communication interface is further configured to report the CSI based on the second configuration information.

[0031] There is a mapping relationship between the P1 antenna ports and the P2 antenna ports.

[0032] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0033] Ninthly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used for:

[0034] Send the first configuration information and the second configuration information to the terminal;

[0035] Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports;

[0036] The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

[0037] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0038] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0039] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0040] In a thirteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method as described in the first or second aspect.

[0041] In this embodiment, after receiving a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, the terminal can determine the Channel State Information (CSI) of the P2 antenna ports corresponding to the second reference signal based on either the first or second reference signal and send it to the network-side device. Here, P2 > P1. This allows the terminal to determine the CSI of the P2 antenna ports not only based on the second reference signal but also based on the first reference signal, which has fewer antenna ports, making the CSI determination method more flexible. Furthermore, the terminal can determine the channel state information of the P2 antenna ports corresponding to the second reference signal based on the low-overhead first reference signal, which helps save energy consumption and resource overhead for transmitting reference signals in the network-side device. Attached Figure Description

[0042] Figure 1 is a block diagram of a wireless communication system applicable to an embodiment of this application;

[0043] Figure 2a is a schematic diagram of one of the reference signal transmission scenarios applicable to the embodiments of this application;

[0044] Figure 2b is a second schematic diagram of a reference signal transmission scenario applicable to the embodiments of this application;

[0045] Figure 3 is a flowchart of a channel state information processing method provided in an embodiment of this application;

[0046] Figure 4 is a flowchart of a configuration information sending method provided in an embodiment of this application;

[0047] Figure 5a is one of the application diagrams of a channel state information processing method provided in an embodiment of this application;

[0048] Figure 5b is a second schematic diagram illustrating the application of a channel state information processing method provided in an embodiment of this application;

[0049] Figure 5c is a third schematic diagram of an application of a channel state information processing method provided in an embodiment of this application;

[0050] Figure 6 is a structural diagram of a channel state information processing device provided in an embodiment of this application;

[0051] Figure 7 is a structural diagram of a configuration information sending device provided in an embodiment of this application;

[0052] Figure 8 is a structural diagram of a communication device provided in an embodiment of this application;

[0053] Figure 9 is a structural diagram of a terminal provided in an embodiment of this application;

[0054] Figure 10 is a structural diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0056] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0057] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0058] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0059] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0060] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0061] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0062] In 5G communication systems, the introduction of massive multiple-input multiple-output (MIMO) antenna technology can significantly improve spectral efficiency, but it requires the base station to know downlink channel information in order to apply appropriate precoding to the data channel. For Frequency Division Duplex (FDD), uplink and downlink channels are not completely reciprocal, and the base station cannot directly obtain downlink channel information, requiring the terminal to feed back Channel State Information (CSI). For Time Division Duplex (TDD), although channel reciprocity exists, and channel estimation can be obtained through uplink pilots, such as Sounding Reference Signals (SRS), in some scenarios (e.g., for cell edge users), the signal-to-noise ratio of the uplink pilots is low, resulting in low accuracy of the obtained channel estimation, thus affecting user communication performance. In such cases, the terminal also needs to feed back CSI to obtain the channel information.

[0063] The network associates each CSI reporting configuration (CSI-ReportConfig) with a reference signal resource configuration (CSI-ResourceConfig) for channel measurement, an interference measurement reference signal resource configuration associated with CSI Interference Measurement (CSI-IM) resources, and / or an interference measurement reference signal resource configuration associated with Non-Zero Power CSI RS (NZP-CSI RS) resources. The terminal obtains the corresponding channel information by measuring the reference resources associated with these resource configurations, further obtains the corresponding CSI information based on the codebook configuration information and report content associated with the CSI report configuration, and provides uplink channel feedback.

[0064] The reference signal resource configuration (CSI-ResourceConfig) used for channel measurement is associated with at least one NZP CSI-RS resource set (NZP-CSI-RS-ResourceSet). For periodic and semi-persistent reporting, only one Channel State Information Reference Signal (CSI-RS) resource set is configured. For aperiodic reporting, multiple CSI-RS resource sets can be configured, but the base station will indicate which CSI-RS resource set to use for reporting. Each CSI-RS resource set will contain at least one CSI-RS resource (NZP-CSI-RS-Resource).

[0065] For periodic reporting, the base station configures it via Radio Resource Control (RRC). For semi-persistent reporting on the Physical Uplink Control Channel (PUCCH), the base station activates or deactivates it via the Medium Access Control Control Element (MAC-CE). For semi-persistent reporting on the Physical Uplink Shared Channel (PUSCH), the base station activates or deactivates it via Downlink Control Information (DCI).

[0066] The terminal will measure CSI-RS on the configured CSI-RS resources and feed back CSI according to the base station's configuration. CSI includes at least one of the following: Channel Quality Indicator (CQI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), and Reference Signal Receiving Power (RSRP). PMI is reported in the form of a codebook, such as a Type-I codebook, Type-II codebook, eType-II codebook, or FeType-II codebook. It should be noted that the number of layers in PMI is the same as the number of layers indicated by RI (layers can also be understood as data streams or ranks), and the selectable values ​​for both are indicated by rank restrictions (e.g., ri-Restriction). CQI is calculated based on the reported PMI. The aforementioned CQI and PMI will be used by the base station to determine the precoding to be used for subsequent data transmission.

[0067] In order for the terminal to measure the channel, the base station needs to transmit downlink pilots. In the NR protocol of related technologies, the downlink pilot used for CSI measurement is usually CSI-RS.

[0068] In the time domain, CSI-RS resources can be configured as periodic, semi-persistent, or aperiodic. In the frequency domain, CSI-RS is typically transmitted over a frequency band, with a density that can be configured to 1 or 0.5. A density of 1 means that CSI-RS will be transmitted on all resource blocks (RBs) within the configured frequency band, while a density of 0.5 means that CSI-RS will be transmitted only on resource blocks with odd or even sequence numbers within the configured frequency band. Specifically, on each RB transmitting CSI-RS, the number of resource elements (REs) occupied by the CSI-RS is equal to the number of CSI-RS ports. Different ports on a CSI-RS resource can be multiplexed on the same time-frequency resource using code division.

[0069] For periodic or semi-persistent CSI-RS, the transmission time can be determined by the following formula (1):

[0070] in, n represents the number of time slots in a frame. f Indicates the system frame number (SFN). T represents the slot index in a frame. offsetT represents the time slot offset. CSI-RS Indicates the period of CSI-RS.

[0071] In addition, the base station also configures a power control offset for CSI-RS resources to determine the energy per resource element (EPRE) of the PDSCH, so as to be used to calculate CQI for feedback.

[0072] For CSI-RS resources with no more than 32 ports, the antenna port index p is given by the following formula (2): p = 3000 + s + jL; j = 0, 1, ..., N / L-1 s = 0, 1, ..., L-1; (2)

[0073] Where s represents the index of the orthogonal cover code sequence (OCC) used by the antenna port, N is the number of ports of the CSI-RS, and L represents the size of the code division multiplexing group (CDM) used by the CSI-RS.

[0074] Prior to New Radio Release 19 (NR Rel-19), the maximum number of CSI-RS ports was 32. With the increase in the number of antennas, NR Rel-19 increased the maximum number of supported CSI-RS ports to 128, which is achieved through four 32-port CSI-RS resources.

[0075] In the current protocol design, the resource overhead of transmitting CSI-RS is proportional to the CSI-RS itself. In the future, as the antenna array size increases, for example to 512 ports, the resource overhead will increase significantly. To illustrate this more clearly, consider a CSI-RS with a period of 5ms, a frequency domain density of 0.5, a subcarrier spacing of 15kHz, a time slot of 1ms, consisting of 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, and 12 REs on one RB. Then, the resource overhead of a 32-port CSI-RS is 0.5*32 / 12 / 14 / 5 = 2%, while for a 512-port CSI-RS, the resource overhead is 0.5*512 / 12 / 14 / 5 = 32%. On the other hand, due to the time-varying nature of the channel, the overhead cannot be reduced by increasing the transmission period; otherwise, performance will be affected by CSI aging. Therefore, with the increase in antenna array size, according to the channel measurement methods in related technologies, the pilot overhead used for CSI measurement will become unacceptable.

[0076] As mentioned above, with the increasing size of antenna arrays, the pilot overhead used for CSI measurements using related channel measurement methods becomes unacceptable. Therefore, this application proposes a channel state information processing method that can reduce the pilot overhead used for channel measurements while ensuring the performance of channel measurements.

[0077] The following section will first explain the relevant principles and concepts that may be involved in this application.

[0078] For convenience, the mathematical symbols used below are described as follows, where X H Let X represent the conjugate transpose of matrix X. -1 This represents finding the inverse of a matrix. and These represent rounding down or up on x, respectively. mod(x,y) or x mod y represents taking the remainder when x is divided by y.

[0079] In this application, an antenna port can also be referred to as a port, and may include a transmitting port and a receiving port. A transmitting port can be understood as a virtual antenna recognized by the receiving device. Optionally, a port can refer to a transmitting antenna port. For example, the reference signal transmitted by each transmitting antenna port can be an uncoded reference signal. Here, the transmitting antenna port can refer to an actual independent transceiver unit (TxRU). Optionally, a port can also refer to a port after beamforming. For example, the reference signal transmitted by each port can be a precoded reference signal obtained by precoding the reference signal based on an angle vector. It is understood that if beamforming is applied to the reference signal, the number of ports can refer to the number of ports in the precoded reference signal. The number of ports in the precoded reference signal can be less than the number of transmitting antenna ports. The reference signal of each port can be transmitted through one or more frequency domain units. A receiving port can be understood as the receiving antenna of the receiving device. For example, in downlink transmission, the receiving port can refer to the receiving antenna of the terminal device. For example, the antenna port can be a CSI-RS port, a Demodulation Reference Signal (DMRS) port, a Sounding Reference Signal (SRS) port, etc.

[0080] The relevant principles and basic processes involved in this application include the following steps:

[0081] Step 1: As shown in Figure 2a, the base station will configure and transmit a first reference signal (marked by a solid line in the figure) and a second reference signal (marked by a dashed line in the figure). The antenna port corresponding to the first reference signal in the frequency domain cell is a subset of the total antenna ports, and the transmission interval is short, for example, 5ms. The antenna port of the second reference signal corresponds to the entire set of antenna ports, and the transmission interval is longer, for example, once every 50ms. In addition, the base station needs to configure the mapping relationship between the ports of the first type of reference signal and the entire set of antenna ports. It should be noted that each transmission of the second reference signal in Figure 2a may also be multiple second reference signals (as shown in Figure 2b).

[0082] Step 2: Based on the second reference signal transmitted over a long period, the terminal can obtain the statistical covariance matrix in the spatial or spatial-frequency domain. Specifically, assume the number of antenna ports on the base station side is N. t Considering that the number of frequency domain units is N f The terminal can base its decisions on the received T second reference signals h. t (t=0,2,…,T-1), calculate the spatial frequency domain covariance matrix R according to the following formula (3):

[0083] Where h represents the spatial frequency domain channel, and its dimension is N. t N f ×1, where each element represents the channel corresponding to a specific frequency domain unit at a specific antenna port. When N f When the value is 1, the channel h degenerates into a spatial channel, and the corresponding R degenerates into a spatial covariance matrix.

[0084] Step 3: Using the estimated R obtained above, when the terminal receives the first reference signal transmitted in a short period, the channel corresponding to the full port set can be recovered. Specifically, assume that the spatial frequency domain channel corresponding to the first reference signal received by the terminal can be represented as h. s =Sh, where S is the spatial frequency domain selection matrix, with only one element in each row being 1 and the rest being 0, and h is the channel corresponding to the full port set. Then, the terminal can obtain an estimate of h according to the following formula (4):

[0085] Where I represents the identity matrix.

[0086] Step 4: The terminal determines and reports the channel state information based on the channels corresponding to the reconstructed full port set. The reporting method can be a codebook based on relevant technologies or future protocol designs, or CSI feedback based on artificial intelligence (AI) methods.

[0087] In this way, the terminal can obtain the channel corresponding to the full set of ports based on the low-overhead first reference signal (the antenna ports corresponding to the first type of reference signal in the frequency domain unit it occupies are a subset of the full set of antenna ports, so the resource overhead of each transmission is small). In addition, although the second reference signal corresponding to the full set of ports is still needed, it is mainly used to obtain statistical information, and since the statistical information remains stable over a long period of time, the transmission time interval can be longer, so the overall overhead is still small.

[0088] The channel state information processing method, apparatus, terminal, and network-side equipment provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0089] Please refer to Figure 3, which is a flowchart of a channel state information processing method provided in an embodiment of this application. The method is applied to a terminal. As shown in Figure 3, the method includes the following steps:

[0090] Step 301: The terminal receives the first configuration information sent by the network-side device, and receives the first reference signal corresponding to the P1 antenna ports and the second reference signal corresponding to the P2 antenna ports according to the first configuration information.

[0091] Where P2 > P1, and both P1 and P2 are positive integers; there is a mapping relationship between the P1 antenna ports corresponding to the first reference signal and the P2 antenna ports corresponding to the second reference signal. The first configuration information is used to configure the first reference signal and the second reference signal, or it can be understood as the first configuration information being used to indicate the time-frequency domain resources for transmitting the first reference signal and the time-frequency domain resources for transmitting the second reference signal, or it can be understood as the first configuration information being used to indicate the time-frequency domain resources occupied by the first reference signal and the time-frequency domain resources occupied by the second reference signal, thereby helping the terminal to receive the first reference signal and the second reference signal on the corresponding time-frequency domain resources based on the first configuration information.

[0092] For example, the first configuration information may indicate at least one of the following: the time-domain behavior (e.g., periodic, semi-persistent, or aperiodic) of the reference signals (first reference signal and second reference signal), the number of ports, resource configuration, and resource pattern. In some implementations, the first configuration information may be RRC, MAC-CE, DCI, or a System Information Block (SIB). Optionally, the first configuration information may be carried by multiple signaling protocols of different types.

[0093] In some implementations, the first reference signal corresponding to P1 antenna ports can also be understood as a first reference signal with P1 antenna ports, or P1 antenna ports corresponding to the first reference signal. It should be noted that the P1 antenna ports corresponding to the first reference signal can be understood as the antenna ports corresponding to the reference signal resources used to transmit the first reference signal in the frequency domain or time unit. The number of reference signal resources used to transmit the first reference signal is at least one, and the total number of antenna ports corresponding to at least one reference signal resource in the frequency domain or time unit is P1. The first reference signal can correspond to at least one reference signal resource. The P1 antenna ports corresponding to these reference signal resources in different frequency domain or time units can be different. In other words, the value of P1 can be different for different reference signal resources, and the corresponding antenna ports can also be different. For example, the first reference signal corresponds to ports #1 and #2 on reference signal resource #1, and the antenna ports corresponding to the first reference signal on reference signal resource #2 are ports #3 and #4. For example, the antenna ports corresponding to the first reference signal may be different in different frequency domain units (or time units). For instance, the first reference signal corresponds to port #1 and port #2 in frequency domain unit 1, and port #3 and port #4 in frequency domain unit 2.

[0094] In some implementations, the second reference signal corresponding to P2 antenna ports can also be understood as a second reference signal with P2 antenna ports, or the P2 antenna ports corresponding to the second reference signal. Optionally, the P2 antenna ports can be all antenna ports of a network-side device (e.g., a base station), or it can be understood that the network-side device includes P2 antenna ports. Alternatively, the P2 antenna ports can also be some antenna ports of the network-side device, and P2 > P1. In the embodiments of this application, the second reference signal corresponds to P2 antenna ports, and the first reference signal corresponds to P1 antenna ports in different frequency domain units or time units, wherein there is a mapping relationship between the P1 antenna ports and the P2 antenna ports. The mapping relationship can be understood as follows: P1 antenna ports correspond to a subset of P2 antenna ports; or P1 antenna ports are a subset of P2 antenna ports, meaning P1 antenna ports are a subset of P2 antenna ports; or P1 antenna ports have the same index as a subset of P2 antenna ports; or P1 antenna ports are associated with a subset of P2 antenna ports corresponding to the codebook reported by the terminal, and the P2 antenna ports corresponding to the second reference signal are associated with the P2 antenna ports corresponding to the codebook reported by the terminal. For example, P1 antenna ports can be the first 5 antenna ports of P2 (i.e., P1 = 5); or P1 antenna ports can be antenna ports with odd-numbered indices (the indices of the P2 antenna ports are arranged in order), and so on. Specific examples are not listed here.

[0095] In this embodiment, the terminal receives a first reference signal and a second reference signal sent by a network-side device. The number of antenna ports corresponding to the first reference signal in its occupied frequency domain unit or time unit is P1, and the number of antenna ports corresponding to the second reference signal in its occupied frequency domain unit or time unit is P2. The frequency domain unit can be a resource element (RE) or a resource block (RB), or it can be a sub-band, or it can be a set of resource blocks consisting of at least one continuous or non-contiguous RE, RB, or sub-band. This application does not specifically limit its usage. The time unit can be a time slot, an orthogonal frequency division multiplexing (OFDM) symbol, a frame, etc., or it can be a set of at least one time slot, symbol, frame, etc. This application does not specifically limit its usage.

[0096] It should be noted that the first reference signal can be CSI-RS, a demodulation reference signal (DMRS), or a tracking reference signal (TRS), etc.; the second reference signal can also be CSI-RS, DMRS, or TRS, and this application does not specifically limit it. The first reference signal and the second reference signal can have the same signal type, for example, the first reference signal is CSI-RS, and the second reference signal is also CSI-RS.

[0097] Optionally, the mapping relationship between the P1 antenna ports corresponding to the first reference signal in different frequency domain units or time units and the P2 antenna ports corresponding to the second reference signal can be sent to the terminal by the network-side device, or it can be agreed upon by the protocol or pre-configured. Therefore, based on the mapping relationship, the terminal can determine which of the P2 antenna ports correspond to the aforementioned P1 antenna ports.

[0098] Step 302: The terminal receives the second configuration information.

[0099] The second configuration information is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports. The terminal can also know the format of the CSI report based on the second configuration information, and thus know how to report the CSI.

[0100] For example, the second configuration information may indicate at least one of the following: the time-domain behavior of the CSI report (e.g., periodic, semi-periodic, or aperiodic), the reporting type, the frequency-domain granularity of the CSI report, the uplink resources used by the CSI report, the codebook type, and the configuration of the corresponding codebook.

[0101] Optionally, the second configuration information can be RRC, MAC-CE, DCI, or System Information Block (SIB). Optionally, the second configuration information can be carried by multiple signaling messages of different types.

[0102] Step 303: The terminal determines the CSI of the P2 antenna ports based on the first reference signal or the second reference signal, and reports the CSI based on the second configuration information.

[0103] Optionally, the CSI of the P2 antenna ports corresponding to the second reference signal can be understood as the index of the P2 ports corresponding to the reported codebook being the same as the index of the P2 antenna ports corresponding to the second reference signal.

[0104] In some implementations, after receiving a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, the terminal determines and reports the CSI of the P2 antenna ports corresponding to the second reference signal based on the first reference signal. Here, there is a mapping relationship between the P1 antenna ports and the P2 antenna ports corresponding to the first reference signal in different frequency domain units or time units. P2 can be the total number of antenna ports of the network-side device, and the P1 antenna ports are a subset of the total number of antenna ports of the network-side device, that is, the P1 antenna ports are a part of the P2 antenna ports. Based on the first reference signal with a number of antenna ports of P1 and the mapping relationship, the terminal can determine the channel of the total number of antenna ports of the network-side device, that is, it can determine the channel of the P2 antenna ports corresponding to the second reference signal. Therefore, the terminal can determine the CSI of the P2 antenna ports corresponding to the second reference signal and send the CSI to the network-side device. In this way, the terminal can determine and report the channel state information corresponding to the full antenna port based on the low-overhead first reference signal. As a result, the network-side device can increase the transmission time interval of the second reference signal, that is, the transmission period of the second reference signal can be greater than the transmission period of the first reference signal. The network-side device does not need to frequently transmit the second reference signal based on the full antenna port, which helps to save the energy consumption of the network-side device and the resource overhead of transmitting the reference signal.

[0105] Of course, P2 can also be a subset of the antenna ports of the network-side device, where P2 > P1. The P1 antenna ports are a subset of the network-side device's antenna ports, meaning the P1 antenna ports are a part of the P2 antenna ports. Based on the first reference signal with P1 antenna ports and the mapping relationship, the terminal can determine the channel of the P2 antenna ports, and thus determine and report the channel state information of the P2 antenna ports to the network-side device. In this way, the terminal can also determine and report the channel state information corresponding to the P2 antenna ports based on the low-overhead first reference signal. This allows the network-side device to increase the transmission interval of the second reference signal, meaning the transmission period of the second reference signal can be greater than the transmission period of the first reference signal. Consequently, the network-side device does not need to frequently transmit the second reference signal, which helps save energy consumption and resource overhead associated with transmitting reference signals.

[0106] In other implementations, after receiving a first reference signal with P1 antenna ports and a second reference signal with P2 antenna ports, the terminal can determine the CSI of the P2 antenna ports corresponding to the second reference signal based on the second reference signal and report it back. It is understood that the number of antenna ports corresponding to the second reference signal can be all antenna ports of the network-side device, and the terminal can thus determine and report the CSI of the P2 antenna ports corresponding to the second reference signal based on the second reference signal.

[0107] In this embodiment, after receiving the first reference signal corresponding to P1 antenna ports and the second reference signal corresponding to P2 antenna ports, the terminal can determine the Channel State Information (CSI) of the P2 antenna ports corresponding to the second reference signal based on either the first or second reference signal and send it to the network-side device. Here, P2 > P1. This allows the terminal to determine the CSI of the P2 antenna ports not only based on the second reference signal but also based on the first reference signal, which has fewer antenna ports, making the CSI determination method more flexible. Furthermore, the terminal can determine the channel state information of the P2 antenna ports corresponding to the second reference signal based on the low-overhead first reference signal. This allows the network-side device to increase the transmission interval of the second reference signal, eliminating the need for frequent transmission of the second reference signal based on the larger number of P2 antenna ports, thus saving energy consumption and resource overhead associated with transmitting reference signals.

[0108] Optionally, the first reference signal and the second reference signal satisfy any one of the following:

[0109] The first reference signal and the second reference signal correspond to the same reference signal resource;

[0110] The reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set;

[0111] The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set;

[0112] The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

[0113] This makes the configuration of the reference signal resource sets for the first and second reference signals more flexible.

[0114] It should be noted that when the first reference signal and the second reference signal correspond to the same reference signal resource (or can be understood as corresponding to the same reference signal resource), the reference signal resource can be a periodic or semi-continuous reference signal resource, or the reference signal resource can also be an aperiodic reference signal resource.

[0115] It should be noted that the reference signal corresponds to at least one reference signal resource. This can be understood as the reference signal being transmitted on the time-frequency resource corresponding to the at least one reference signal resource, or as the terminal receiving the reference signal on the time-frequency resource of the at least one reference signal resource, or as the port corresponding to the at least one reference signal resource constituting the port of the reference signal, or as the reference signal being configured as the at least one reference signal resource.

[0116] It is understandable that the first reference signal and the second reference signal corresponding to the same reference signal resource can also be understood as the first reference signal and the second reference signal being configured through the same reference signal resource, such as through the same NZP-CSI-RS-Resource.

[0117] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a periodic or semi-continuous reference signal resource, the method further includes:

[0118] The terminal determines the transmission time (or time domain position) corresponding to the first reference signal and the second reference signal respectively based on the first indication information sent by the network-side device. The first indication information is used to indicate at least one of the following:

[0119] The first bit diagram, where one bit in the first bit diagram corresponds to at least one transmission time;

[0120] The first period and N1 time offsets in the first period, where N is a positive integer, are used to determine N1 transmission times in the first period. The N1 transmission times are used to transmit the second reference signal, and the other transmission times in the first period other than the N1 transmission times are used to transmit the first reference signal.

[0121] The second cycle and the first duration in the second cycle, the transmission time corresponding to the first duration in the second cycle is used to transmit the second reference signal, and the other transmission times in the second cycle other than the transmission time corresponding to the first duration are used to transmit the first reference signal;

[0122] The third period is used to determine the transmission time of the first reference signal;

[0123] The fourth period is used to determine the transmission time of the second reference signal. In this embodiment, when the first reference signal and the second reference signal correspond to the same reference signal resource, if the reference signal resource is a periodic or semi-continuous reference signal resource, the first reference signal is transmitted at some transmission times of the reference signal resource, and the second reference signal is transmitted at the remaining transmission times. The transmission times corresponding to the first reference signal and the second reference signal can be indicated by first indication information transmitted by the network-side device.

[0124] In some implementations, the first indication information is used to indicate a first bit diagram, that is, to indicate the transmission times corresponding to the first reference signal and the second reference signal respectively through the first bit diagram. For example, the first indication information is used to indicate a first bit diagram of length N, which includes N bits, each bit corresponding to the transmission time of at least one reference signal resource. For example, when a bit is a first value (e.g., 0), it indicates that its corresponding transmission time is the transmission time of the second reference signal; if it is a second value (e.g., 1), it indicates that its corresponding transmission time is the transmission time of the first reference signal.

[0125] In some implementations, the first indication information is used to indicate a first period and N1 time offsets within the first period. For example, the first period is K1, which can be understood as the first period corresponding to the transmission times of K1 of the reference signal resources, where K1 > N1. The N1 time offsets are used to determine the N1 transmission times within the first period K1, that is, the N1 transmission times among the K1 transmission times. For example, the transmission time is the sum of a preset time and the time offsets. The N transmission times determined based on the N time offsets are used to transmit the second reference signal, and the other transmission times in the first period K1 besides the N1 transmission times are used to transmit the first reference signal, that is, K1-N1 transmission times are used to transmit the first reference signal. In other words, N1 transmission times out of every K1 transmission times are used to transmit the second reference signal, and K1-N1 transmission times are used to transmit the first reference signal. Optionally, at least one of the N1 time offsets is a default value, for example, the minimum time offset is 0 by default. In this case, the first indication information only needs to indicate the remaining time offsets other than the time offsets that are the default values.

[0126] In some implementations, the first indication information is used to indicate a second period and a first duration within the second period. For example, if the second period is K2, and the second period corresponds to K2 transmission times of the reference signal resource, and the first duration is T, where T = 1, 2, ..., K2, then the transmission time corresponding to the first duration T in every K2 transmission times is used to transmit the second reference signal. For example, the first T transmission times in every K2 transmission times are used to transmit the second reference signal, and the other transmission times in the K2 transmission times besides the transmission time corresponding to the first duration T are used to transmit the first reference signal.

[0127] In some embodiments, the first indication information is used to indicate at least one of a third period and a fourth period. The third period is used to determine the transmission time of the first reference signal, and the fourth period is used to determine the transmission time of the second reference signal. The third or fourth period can be in units of the period of the reference signal resource, or in units of a time slot, symbol, half-frame, or frame; this application does not limit this. Optionally, the third period can be a default value, such as 1, in which case it is not necessary to indicate the third period. Optionally, the fourth period can be in units of the time length corresponding to the third period. Optionally, the time length corresponding to the fourth period is greater than the time length corresponding to the third period.

[0128] In this way, it is possible to determine which transmission times in the reference signal resources are used to transmit the first reference signal and which transmission times are used to transmit the second reference signal through the different implementation methods described above, thereby making the determination of the transmission times corresponding to the first reference signal and the second reference signal more flexible.

[0129] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is an aperiodic reference signal resource, the method further includes at least one of the following:

[0130] The terminal determines the transmission time (or time domain position) corresponding to the aperiodic reference signal resource according to the first signaling sent by the network-side device. The first signaling is either a signaling that triggers the reference signal resource or a signaling that triggers the reporting configuration associated with the reference signal resource. The first signaling is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time.

[0131] The terminal determines the transmission time corresponding to the aperiodic reference signal resource according to the second signaling sent by the network-side device. The second signaling is used to indicate a trigger state, which is associated with the reference signal resource. The trigger state is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time.

[0132] For example, in some implementations, for a first signaling that triggers a reference signal resource (i.e., the reference signal resource corresponding to the first reference signal and the second reference signal) or a first signaling that triggers a reporting configuration associated with the reference signal resource, the network-side device configures the first signaling to also indicate whether the first reference signal or the second reference signal is transmitted at the transmission time corresponding to the reference signal resource. Then, when the terminal receives the first signaling sent by the network-side device, it can determine whether the first reference signal or the second reference signal is transmitted at the transmission time corresponding to the reference signal resource, so that the terminal can receive the first reference signal or the second reference signal at the transmission time corresponding to the reference signal resource.

[0133] Alternatively, in some implementations, the network-side device configures a second signaling to indicate the triggering state associated with the reference signal resource (i.e., the reference signal resource corresponding to the first reference signal and the second reference signal). The triggering state indicates whether the transmission time corresponding to the reference signal resource is used to transmit the first reference signal or the second reference signal. Thus, when the terminal receives the second signaling sent by the network-side device, it can determine whether the first reference signal or the second reference signal is transmitted at the transmission time corresponding to the reference signal resource, so that the terminal can receive the first reference signal or the second reference signal at the transmission time corresponding to the reference signal resource.

[0134] Furthermore, when the first reference signal and the second reference signal correspond to the same reference signal resource, the network-side device can indicate through the first signaling or the second signaling whether the corresponding transmission time on the reference signal resource is used to transmit the first reference signal or the second reference signal, so that the terminal can receive the first reference signal and the second reference signal more accurately.

[0135] Optionally, if the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource;

[0136] The step of reporting the CSI according to the second configuration information includes:

[0137] The terminal reports the CSI according to the first reporting configuration and the first target reference signal;

[0138] Wherein, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following:

[0139] The reference signal resource is the last reference signal in the time domain;

[0140] The reference signal is the reference signal corresponding to the reference signal resource.

[0141] It should be noted that the reference signal corresponding to the reference signal resource (i.e., the reference signal resource corresponding to the first reference signal and the second reference signal) can be understood as the reference signal transmitted on that reference signal resource. The reference signal with the last time-domain position among the reference signals corresponding to the aforementioned reference signal resource can be understood as the last reference signal transmitted among the reference signals corresponding to the reference signal resource, that is, the last reference signal transmitted on that reference signal resource (which may be the first reference signal or the second reference signal). In this embodiment, the time-domain position of the first target reference signal is no later than the time-domain position of the CSI reference resource, thus enabling the terminal to determine the time-domain position of the first target reference signal based on the time-domain position of the CSI reference resource. The terminal then reports CSI based on the first target reference signal and the first reporting configuration associated with the reference signal resource.

[0142] Alternatively, the first target reference signal is a reference signal (including the first reference signal and / or the second reference signal) transmitted on the reference signal resource (i.e., the reference signal resource corresponding to the first reference signal and the second reference signal). That is, there can be multiple first target reference signals, and the time domain position corresponding to each of the multiple first target reference signals is no later than the time domain position of the CSI reference resource. The terminal reports through multiple first target reference signals and a first reporting configuration associated with the reference signal resource, such as reporting CSI.

[0143] Optionally, when the reference signal resource is an aperiodic reference signal resource, the first target reference signal is the reference signal corresponding to the triggered reference signal resource. The reference signal may be a first reference signal or a second reference signal.

[0144] It should be noted that the reference signal transmitted on the reference signal resource can also be understood as the reference signal received by the terminal on the reference signal resource.

[0145] In this way, when the first reference signal and the second reference signal correspond to the same reference signal resource, the network-side device configures the first reporting configuration associated with the reference signal resource, thereby determining the terminal's reporting method.

[0146] It should be noted that the first reference signal and the second reference signal can also correspond to the same set of reference signal resources, that is, the first reference signal and the second reference signal are transmitted through all the reference signal resources in that set. Whether the transmission time (or time-domain position) corresponding to a reference signal resource in the set is used to transmit the first reference signal or the second reference signal can be determined by referring to the above method (i.e., the first reference signal and the second reference signal correspond to the same reference signal resources), and will not be repeated here.

[0147] In this embodiment, the first reference signal corresponds to at least one reference signal resource, the second reference signal corresponds to at least one reference signal resource, and the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal. The number of at least one reference signal resources corresponding to the second reference signal is greater than or equal to the number of at least one reference signal resources corresponding to the first reference signal. In this case, the at least one reference signal resource corresponding to the first reference signal constitutes a first reference signal resource set, and the at least one reference signal resource corresponding to the second reference signal constitutes a second reference signal resource set. The first reference signal resource set is a subset of the second reference signal resource set. It is understood that the first reference signal is transmitted using reference signal resources in the first reference signal resource set, and the second reference signal is transmitted using reference signal resources in the second reference signal resource set. The transmission times of the first and second reference signals (which can also be understood as) can refer to the above-described method (i.e., the first and second reference signals correspond to the same reference signal resources).

[0148] For example, for periodic or semi-continuous reference signal resources, it can be determined by second indication information, which indicates at least one of the following:

[0149] The second bitmap, wherein one bit in the second bitmap corresponds to the transmission time of at least one set of reference signal resources;

[0150] The fifth period and N2 time offsets within the fifth period, where N2 is a positive integer, are used to determine the transmission time of the N2 reference signal resource sets in the fifth period as the transmission time of the second reference signal resource set. The transmission time of the N2 reference signal resource sets is used to transmit the second reference signal. The transmission times of the other reference signal resource sets in the fifth period, excluding the N2 transmission times, are used to transmit the first reference signal resource set. The transmission times of the other reference signal resource sets are used to transmit the first reference signal.

[0151] The sixth cycle and the second duration within the sixth cycle, wherein the transmission time of the reference signal resource set corresponding to the second duration in the sixth cycle is the transmission time of the second reference signal resource set, the transmission time of the reference signal resource set corresponding to the second duration is used to transmit the second reference signal, and the transmission times of the other reference signal resource sets in the sixth cycle other than the transmission time of the reference signal resource set corresponding to the second duration are the transmission times of the first reference signal resource set, the transmission times of the other reference signal resource sets are used to transmit the first reference signal.

[0152] The seventh cycle is used to determine the transmission time of the first reference signal resource set;

[0153] The eighth cycle is used to determine the transmission time of the second reference signal resource set.

[0154] The seventh or eighth cycle can be based on the period of a reference signal resource or a set of reference signal resources, or it can be based on a time unit, such as a time slot, symbol, half-frame, or frame. Optionally, the seventh cycle can be the default, for example, 1, in which case no indication is needed. Optionally, the eighth cycle can be based on the time length corresponding to the seventh cycle. Optionally, the time corresponding to the eighth cycle can be longer than the time corresponding to the seventh cycle.

[0155] For example, for aperiodic reference signal resources, the terminal determines the transmission time of the aperiodic reference signal resource set based on third signaling sent by the network-side device. The third signaling can directly indicate whether the transmission time of the reference signal resource set is the transmission time of a first reference signal resource set or a second reference signal resource set. Alternatively, the third signaling can indicate this indirectly, for example, through a trigger status indication associated with the reference signal resource set, which indicates whether the transmission time of the reference signal resource set is the transmission time of the first or second reference signal resource set.

[0156] The transmission time of the reference signal resource set can be understood as the transmission time of the reference signal resource in the reference signal resource set, which can include multiple transmission times.

[0157] In this embodiment, the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set. In this case, the reference signal resource corresponding to the first reference signal is the first reference signal resource, and the reference signal resource corresponding to the second reference signal is the second reference signal resource. The number of first reference signal resources is M, and the number of second reference signal resources is L, where M is an integer greater than or equal to 1, and L is an integer greater than or equal to 1. For example, the reference signal resource set can be NZP-CSI-RS-ResourceSet.

[0158] In some implementations, M equals 1, meaning that there is only one reference signal resource in the reference signal resource set used to transmit the first reference signal, and there is at least one reference signal resource in the reference signal resource set used to transmit the second reference signal.

[0159] Optionally, when M equals 1, there is an association relationship between the L second reference signal resources in the reference signal resource set (where L is greater than 1), and / or, there is an association relationship between the first reference signal resource and the L second reference signal resources (where L is greater than or equal to 1).

[0160] For example, there may be a correlation between the L second reference signal resources. For instance, ports with the same index in these second reference signal resources may correspond to the same antenna port. If L is 3, it means that there are 3 second reference signal resources used to transmit the second reference signal. These 3 second reference signal resources are reference signal resource A1, reference signal resource A2, and reference signal resource A3. Specifically, the port with index 3 in reference signal resource A1, the port with index 3 in reference signal resource A2, and the port with index 3 in reference signal resource A3 all correspond to the same antenna port. Another example is that the L second reference signal resources may be associated with the same reference signal resource, such as having a quasi-co-location (QCL) relationship with the same reference signal resource.

[0161] For example, there is an association between the first reference signal resource and L second reference signal resources, such as a QCL relationship between the first reference signal resource and L second reference signal resources.

[0162] Optionally, when M is greater than 1, the L second reference signal resources are divided into L1 groups of second reference signal resources, where L1 is an integer greater than or equal to 1; wherein:

[0163] Each second reference signal resource group is associated with one of the M first reference signal resources (where L is greater than or equal to 1); and / or,

[0164] There are correlations between different second reference signal resources within each second reference signal resource group (in which case L is greater than 1).

[0165] For example, there is a QCL relationship between each second reference signal resource group and one of the M first reference signal resources.

[0166] For example, within a second reference signal resource group, there are relationships between different second reference signal resources. For instance, ports with the same index of second reference signal resources within the same second reference signal resource group correspond to the same antenna port. Or, second reference signal resources within the same second reference signal resource group are related to the same reference signal resource.

[0167] Optionally, if the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or the reference signal resource.

[0168] The step of reporting the CSI according to the second configuration information includes:

[0169] The terminal reports the CSI according to the second reporting configuration and the second target reference signal;

[0170] Wherein, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following:

[0171] The reference signal in the reference signal resource set is the last reference signal in the time domain;

[0172] The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set;

[0173] The reference signals corresponding to the reference signal resources in the reference signal resource set;

[0174] The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

[0175] For example, when the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the terminal reports according to the second target reference signal and the second reporting configuration associated with the reference signal resource set or the reference signal resource. The reference signal resource is the reference signal resource in the reference signal resource set, and the second target reference signal can be one of the following cases:

[0176] Case 1: The second target reference signal is the last reference signal in the time domain among the reference signals corresponding to the reference signal resources in the reference signal resource set. The second target reference signal can also be understood as the last reference signal transmitted on the reference signal resources in the reference signal resource set (which may be the first reference signal or the second reference signal), and the time domain position of this second target reference signal is no later than the time domain position of the CSI reference resource. Therefore, the terminal can determine the time domain position of the second target reference signal based on the time domain position of the CSI reference resource. The reference signal resources in the reference signal resource set can be a portion of the reference signal resources in the set, or all the reference signal resources in the set.

[0177] Case 2: The second target reference signal is the last reference signal in the time domain among the reference signals corresponding to the reference signal resources associated with the reference signal resource set. The second target reference signal can also be understood as the last reference signal sent on the reference signal resources associated with the reference signal resource set (which may be the first reference signal or the second reference signal), and the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource. Thus, the terminal can determine the time domain position of the second target reference signal based on the time domain position of the CSI reference resource.

[0178] Case 3: The second target reference signal is a reference signal transmitted on a reference signal resource within the reference signal resource set. In this case, there may be multiple second target reference signals, and the time-domain positions of these second target reference signals are no later than the time-domain positions of the CSI reference resources. Therefore, the terminal can determine the time-domain positions of these second target reference signals based on the time-domain positions of the CSI reference resources. The reference signal resources within the reference signal resource set may be a portion of the reference signal resources in the set, or all of the reference signal resources in the set.

[0179] Case 4: The second target reference signal is a reference signal transmitted on a reference signal resource associated with the reference signal resource set. In this case, there may be multiple second target reference signals, and the time domain position of these second target reference signals is no later than the time domain position of the CSI reference resource. Thus, the terminal can determine the time domain position of these second target reference signals based on the time domain position of the CSI reference resource.

[0180] It should be noted that the reference signal resources associated with each other in the reference signal resource set can refer to reference signal resources in the reference signal resource set that have an association relationship, such as ports with the same index corresponding to the same antenna port, etc. For example, associated reference signal resources can be associated second reference signal resources, or a first reference signal resource and its associated second reference signal resource.

[0181] Optionally, when the reference signal resource set is aperiodic, the second target reference signal is the reference signal corresponding to the reference signal resource in the triggered reference signal resource set. The reference signal may be either the first reference signal or the second reference signal.

[0182] In this embodiment of the application, when the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the terminal can determine the second target reference signal to be reported based on the above-mentioned situations, making the determination method of the second target reference signal more flexible.

[0183] It should be noted that the first reference signal and / or the second reference signal can also be different sets of reference signal resources corresponding to the same set of reference signal resources. That is, the first reference signal is transmitted through all reference signal resources in a set of reference signal resources, and / or the second reference signal is transmitted through all reference signal resources in a set of reference signal resources. The configuration method for the reference signal resources and the related configuration for CSI reporting can refer to the above method (i.e., the first and second reference signals correspond to different reference signal resources in the same set of reference signal resources), and will not be repeated here (simply replace "reference signal resource" with "set of reference signal resources").

[0184] In this embodiment of the application, the first reference signal may correspond to a reference signal resource in a first reference signal resource set, and the second reference signal may correspond to a reference signal resource in a second reference signal resource set. That is, the first reference signal and the second reference signal may correspond to reference signal resources in different reference signal resource sets.

[0185] Optionally, there may be associations among the multiple reference signal resources in the second reference signal resource set. For example, ports with the same index on different reference signal resources in the second reference signal resource set may correspond to the same antenna port. Alternatively, different reference signal resources in the second reference signal resource set may be associated with the same reference signal resource, such as a QCL relationship.

[0186] Optionally, at least some of the reference signal resources in the second reference signal resource set are associated with the reference signal resources in the first reference signal resource set. For example, some or all of the reference signal resources in the second reference signal resource set are associated with the reference signal resources in the first reference signal resource set.

[0187] In this embodiment of the application, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the reference signal resources in the second reference signal resource set are divided into K second reference signal resource groups, where K is a positive integer;

[0188] Each of the second reference signal resource groups is associated with a reference signal resource in the first reference signal resource set, and / or, there is an association relationship between different reference signal resources within each of the second reference signal resource groups.

[0189] For example, there is an association relationship between each second reference signal resource group in the second reference signal resource set and a reference signal resource in the first reference signal resource set, such as a QCL relationship.

[0190] For example, there are relationships between different reference signal resources within each second reference signal resource group in the second reference signal resource set. For instance, ports with the same index of different reference signal resources within the same second reference signal resource group correspond to the same antenna port. Or, different reference signal resources within the same second reference signal resource group are related to the same reference signal resource.

[0191] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a third reporting configuration associated with the first reference signal resource set and the second reference signal resource set.

[0192] The step of reporting the CSI according to the second configuration information includes:

[0193] The terminal reports the CSI according to the third reporting configuration and the third target reference signal;

[0194] Wherein, the third target reference signal is either the first reference signal or the second reference signal, the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource, and the third target reference signal is any one of the following:

[0195] The reference signal whose time-domain position is the last one in the reference signal resource set corresponding to the reference signal resource;

[0196] The reference signal whose time-domain position is the last one in the reference signal resources associated with the target reference signal resource set;

[0197] The reference signal corresponding to the reference signal resource in the target reference signal resource set;

[0198] The reference signal corresponding to the reference signal resource associated with the target reference signal resource set;

[0199] The target reference signal resource set is the first reference signal resource set and / or the second reference signal resource set.

[0200] For example, when the first reference signal corresponds to a reference signal resource in a first reference signal resource set, and the second reference signal corresponds to a reference signal resource in a second reference signal resource set, the terminal reports according to the third target reference signal and the third reporting configuration configured by the network-side device and associated with the first or second reference signal resource set. The following are some simple examples of the third target reference signal:

[0201] Case 1: The third target reference signal is the last transmitted (i.e., the last in time domain position) reference signal on the reference signal resource in the first reference signal resource set (or the second reference signal resource set), and the time domain position of the third target reference signal is no later than the time domain position of the CSI reference resource. Therefore, the terminal can determine the time domain position of the third target reference signal based on the time domain position of the CSI reference resource. The reference signal resources in the first reference signal resource set can be a portion of the reference signal resources in the first reference signal resource set, or all the reference signal resources in the first reference signal resource set; the reference signal resources in the second reference signal resource set can be a portion of the reference signal resources in the second reference signal resource set, or all the reference signal resources in the second reference signal resource set.

[0202] Case 2: The third target reference signal is the last transmitted (i.e., the last in time domain position) reference signal on the reference signal resources in the first reference signal resource set and the reference signal resources in the second reference signal resource set (in this case, the third target reference signal may be the first reference signal or the second reference signal), and the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource. The reference signal resources in the first reference signal resource set may be a portion of the reference signal resources in the first reference signal resource set or all the reference signal resources in the first reference signal resource set; the reference signal resources in the second reference signal resource set may be a portion of the reference signal resources in the second reference signal resource set or all the reference signal resources in the second reference signal resource set.

[0203] Case 3: The third target reference signal is the last transmitted (i.e., the last one in time domain position) reference signal on the reference signal resource associated in the first reference signal resource set (or the second reference signal resource set), and the time domain position of the third target reference signal is no later than the time domain position of the CSI reference resource.

[0204] Case 4: The third target reference signal is the last reference signal transmitted (i.e., the last one in time domain position) on the reference signal resource associated with the first reference signal resource set and the second reference signal resource set, and the time domain position of the third target reference signal is no later than the time domain position of the CSI reference resource.

[0205] Case 5: The third target reference signal is a reference signal transmitted on a reference signal resource in the first reference signal resource set (or the second reference signal resource set). In this case, there may be multiple third target reference signals, and the time domain position of the multiple third target reference signals is no later than the time domain position of the CSI reference resource.

[0206] Case 6: The third target reference signal is the last (i.e., the last in time domain position) reference signal transmitted on the reference signal resources in the first reference signal resource set and the reference signal resources in the second reference signal resource set. In this case, there can be multiple third target reference signals, and the time domain position of the multiple third target reference signals is no later than the time domain position of the CSI reference resource.

[0207] Case 7: The third target reference signal is a reference signal transmitted on a reference signal resource associated in the first reference signal resource set (or the second reference signal resource set). In this case, there may be multiple third target reference signals, and the time domain position of the multiple third target reference signals is no later than the time domain position of the CSI reference resource.

[0208] Case 8: The third target reference signal is a reference signal transmitted on a reference signal resource associated with the first reference signal resource set and the second reference signal resource set. In this case, there may be multiple third target reference signals, and the time domain position of the multiple third target reference signals is no later than the time domain position of the CSI reference resource.

[0209] It should be noted that the reference signal resources associated in the first reference signal resource (or the second reference signal resource) can refer to the existence of an association between these reference signal resources, such as ports with the same index in these reference signal resources corresponding to the same antenna port. The reference signal resources associated in the first and second reference signal resources can also refer to the existence of an association between these reference signal resources, such as a QCL relationship.

[0210] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a fourth reporting configuration associated with the first reference signal resource set and a fifth reporting configuration associated with the second reference signal resource set.

[0211] The step of reporting the CSI according to the second configuration information includes:

[0212] The terminal reports the CSI according to the fourth reporting configuration and / or the fifth reporting configuration. Optionally, the reporting quantity in the fifth reporting configuration is configured as "None". Optionally, there is an association between the fourth and fifth reporting configurations, for example, the identifier of the fifth reporting configuration is associated with the fourth reporting configuration. Optionally, when the reference signal resource set is aperiodic, the third target reference signal is the reference signal corresponding to the reference signal resource in the triggered reference signal resource set. The reference signal may be the first reference signal or the second reference signal.

[0213] In this embodiment of the application, the terminal can determine the third target reference signal to be reported based on the above-mentioned situations, making the determination method of the third target reference signal more flexible.

[0214] It should be noted that the first reference signal and / or the second reference signal can also be a set of reference signal resources corresponding to different reference signal sets. That is, the first reference signal is transmitted through all reference signal resources in a reference signal resource set, and / or the second reference signal is transmitted through all reference signal resources in a reference signal resource set. The configuration method for the reference signal resources and the related configuration for CSI reporting can refer to the above method (i.e., the first and second reference signals correspond to reference signal resources in different reference signal resource sets), and will not be repeated here (simply replace "reference signal resource" with "reference signal resource set").

[0215] It should be noted that the indices in the embodiments of this application all start counting from 0. In other possible embodiments, the indices may also start from 1, or from other positive integers, and this application does not specifically limit this.

[0216] Please refer to Figure 4, which is a flowchart of a configuration information sending method provided in an embodiment of this application. The method is applied to a network-side device. As shown in Figure 4, the method includes the following steps:

[0217] Step 401: The network-side device sends the first configuration information and the second configuration information to the terminal.

[0218] Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports;

[0219] The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

[0220] Optionally, the first reference signal and the second reference signal satisfy any one of the following:

[0221] The first reference signal and the second reference signal correspond to the same reference signal resource;

[0222] The reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set;

[0223] The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set;

[0224] The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

[0225] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a periodic or semi-continuous reference signal resource, the method further includes:

[0226] The network-side device sends a first indication message to the terminal, the first indication message being used to indicate at least one of the following:

[0227] The first bit diagram, where one bit in the first bit diagram corresponds to at least one transmission time;

[0228] The first period and N1 time offsets in the first period, where N1 is a positive integer, are used to determine N1 transmission times in the first period. The N1 transmission times are used to transmit the second reference signal, and the other transmission times in the first period other than the N1 transmission times are used to transmit the first reference signal.

[0229] The second cycle and the first duration in the second cycle, the transmission time corresponding to the first duration in the second cycle is used to transmit the second reference signal, and the other transmission times in the second cycle other than the transmission time corresponding to the first duration are used to transmit the first reference signal;

[0230] The third period is used to determine the transmission time of the first reference signal;

[0231] The fourth period is used to determine the transmission time of the second reference signal.

[0232] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is an aperiodic reference signal resource, the method further includes at least one of the following:

[0233] The network-side device sends a first signaling message to the terminal. The first signaling message is either a signaling message that triggers the reference signal resource or a signaling message that triggers a reporting configuration associated with the reference signal resource. The first signaling message is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time corresponding to the aperiodic reference signal resource.

[0234] The network-side device sends a second signaling message to the terminal. The second signaling message is used to indicate a trigger state, which is associated with the reference signal resource. The trigger state is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time corresponding to the aperiodic reference signal resource.

[0235] Optionally, if the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource;

[0236] Wherein, the CSI associated with the first reported configuration corresponds to the first target reference signal, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following:

[0237] The reference signal resource is the last reference signal in the time domain;

[0238] The reference signal is the reference signal corresponding to the reference signal resource.

[0239] Optionally, when the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same set of reference signal resources, the reference signal resource corresponding to the first reference signal is the first reference signal resource, and the reference signal resource corresponding to the second reference signal is the second reference signal resource. The number of the first reference signal resources is M, and the number of the second reference signal resources is L, where M is an integer greater than or equal to 1, and L is an integer greater than or equal to 1.

[0240] Optionally, when M equals 1, there is an association relationship between the L second reference signal resources, and / or, there is an association relationship between the first reference signal resource and the L second reference signal resources.

[0241] Optionally, when M is greater than 1, the L second reference signal resources are divided into L1 groups of second reference signal resources, where L1 is an integer greater than or equal to 1; wherein:

[0242] Each second reference signal resource group is associated with one of the M first reference signal resources; and / or,

[0243] There are correlations between different second reference signal resources within each second reference signal resource group.

[0244] Optionally, if the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or the reference signal resource.

[0245] Wherein, the CSI associated with the second reporting configuration corresponds to the second target reference signal, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following:

[0246] The reference signal in the reference signal resource set is the last reference signal in the time domain;

[0247] The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set;

[0248] The reference signals corresponding to the reference signal resources in the reference signal resource set;

[0249] The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

[0250] Optionally, when the first reference signal corresponds to a reference signal resource in a first reference signal resource set, and the second reference signal corresponds to a reference signal resource in a second reference signal resource set, there is an association relationship between the multiple reference signal resources in the second reference signal resource set; and / or,

[0251] There is a correlation between the reference signal resources in the second reference signal resource set and the reference signal resources in the first reference signal resource set.

[0252] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the reference signal resources in the second reference signal resource set are divided into K second reference signal resource groups, where K is a positive integer;

[0253] Each of the second reference signal resource groups is associated with a reference signal resource in the first reference signal resource set, and / or, there is an association relationship between different reference signal resources within each of the second reference signal resource groups.

[0254] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a third reporting configuration associated with the first reference signal resource set and the second reference signal resource set.

[0255] Wherein, the CSI associated with the third reporting configuration corresponds to the third target reference signal, the third target reference signal is either the first reference signal or the second reference signal, the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource, and the third target reference signal is any one of the following:

[0256] The reference signal whose time-domain position is the last one in the reference signal resource set corresponding to the reference signal resource;

[0257] The reference signal whose time-domain position is the last one in the reference signal resources associated with the target reference signal resource set;

[0258] The reference signal corresponding to the reference signal resource in the target reference signal resource set;

[0259] The reference signal corresponding to the reference signal resource associated with the target reference signal resource set;

[0260] The target reference signal resource set is the first reference signal resource set and / or the second reference signal resource set.

[0261] The configuration information sending method for network-side devices provided in this application corresponds to the method for terminal-side devices described above. The relevant concepts and implementation processes involved in this application can be referred to the specific descriptions in the above embodiments, and will not be repeated in this embodiment.

[0262] In this embodiment, the network-side device sends first configuration information and second configuration information to the terminal. The terminal can receive a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, and determine the CSI of the P2 antenna ports corresponding to the second reference signal and send it to the network-side device. Here, P2 > P1. This allows the terminal to determine the CSI of the P2 antenna ports not only based on the second reference signal, but also based on the first reference signal with fewer antenna ports, making the CSI determination method more flexible. Furthermore, the terminal can determine the channel state information of the P2 antenna ports corresponding to the second reference signal based on the low-overhead first reference signal. Therefore, the network-side device can increase the transmission time interval of the second reference signal, and the network-side device does not need to frequently transmit the second reference signal based on the larger number of P2 antenna ports, which helps save network-side device overhead and resource overhead for transmitting reference signals.

[0263] To better understand the technical solutions provided in this application, the following explanations and illustrations are provided through several specific embodiments.

[0264] Example 1: The first reference signal and the second reference signal are configured to correspond to the same reference signal resource.

[0265] In this embodiment, the first reference signal and the second reference signal are configured using the same reference signal resource. Additionally, the network-side device (using a base station as an example below) also needs to indicate the port mapping relationship, that is, the mapping relationship between the antenna ports of the first reference signal in different frequency domain units or time units and the antenna ports of the second reference signal.

[0266] For periodic or semi-continuous reference signal resources, the first reference signal is transmitted at certain transmission times (or time-domain locations) corresponding to the reference signal resource, and the second reference signal is transmitted at the remaining transmission times. The base station also needs to indicate the port mapping relationship, that is, the mapping relationship between the antenna ports corresponding to the first reference signal in different frequency domain units or time units and the antenna ports of the second reference signal. The specific transmission times of the two reference signals can be configured by the base station; the specific configuration method can be as follows:

[0267] Method 1-1:

[0268] Indicates a bitmap b of length N. N-1 b N-2 …b0, also known as the aforementioned first bitmap; this bitmap of length N includes N transmission times, which can be understood as the period of a time-domain pattern. When bi When (i = 0, ..., N-1) is the first value (e.g., the first value is 1), it indicates that the (i+1)th transmission time in every N transmission times is used to transmit the second reference signal. If it is the second value (e.g., the second value is 0), it indicates that the (i+1)th transmission time in every N transmission times is used to transmit the first reference signal. For example, assuming the bit value in this bitmap is 00100, it means that the second reference signal is transmitted at the 3rd transmission time in every 5 transmission times, and the first reference signal is transmitted at the remaining transmission times. For example, as shown in Figure 5a, each square represents a time slot, the period of the reference signal resource is 3 time slots, and the bit value in the bitmap is 001. It should be noted that the above transmission time can be the transmission time determined by the period of the reference signal resource (see the previous related description). The first transmission time in every N transmission times can be configured by the base station or determined by certain rules, such as by the system frame number.

[0269] Optionally, the transmission time of the first reference signal satisfies the following formula (5): b i =Second value

[0270] The transmission time of the second reference signal satisfies the following formula (6): b i =First value

[0271] in, n represents the number of time slots in a frame. f Indicates the system frame number (SFN). T represents the slot index in a frame. offset T represents the time slot offset of the reference signal resource within one period. CSI-RS The period of the reference signal resource is represented by N0, which is a constant and can be specified by the protocol, defaulted to, or indicated by the base station. It should be noted that the rounding up in the above two formulas can also be rounding down or using ordinary parentheses. Furthermore, the above two formulas can also have other equivalent forms; for example, when N0 = 0, it can be omitted from the above formulas, which is not limited here.

[0272] Method 1-2:

[0273] The base station indicates the first period N and at least one time offset of the first period 0≤n i <N(i=0,…,N1-1),n0<n1<…<n N1-1 Represents the nth time in every N transmission times.i +1 transmission time is used to transmit the second reference signal. It should be noted that the above transmission time can be determined by the period of the reference signal resource (see the previous description). The first transmission time in every N transmission times can be configured by the base station or determined by certain rules, such as the system frame number. For example, as shown in Figure 5b, N=5, n0=0, n1=1 are configured.

[0274] Optionally, the transmission time of the first reference signal satisfies the following formula (7):

[0275] The transmission time of the second reference signal satisfies the following formula (8):

[0276] in, n represents the number of time slots in a frame. f Indicates the system frame number (SFN). T represents the slot index in a frame. offset T represents the time slot offset of the reference signal resource within one period. CSI-RS The period of the reference signal resource is represented by N0, which is a constant and can be specified by the protocol, defaulted, or indicated by the base station. It should be noted that the rounding up in formulas (7) and (8) above can also be rounding down or using ordinary parentheses. Furthermore, formulas (7) and (8) above can also have other equivalent forms, which are not limited here. When there is only one time offset, formulas (7) and (8) above can be simplified to:

[0277] as well as

[0278] Optionally, one of the N1 time offsets may be a default value, such as n0 = 0. In this case, it is not necessary to indicate the time offset with the default value.

[0279] Methods 1-3:

[0280] The base station indicates the first period N, and the first duration N2 in the first period (N2 = 1, ..., N).

[0281] In some implementations, the above indication means that the first N² transmission times corresponding to the first duration in every N transmission times will be used to transmit the second reference signal, and the remaining transmission times will be used to transmit the first reference signal. It should be noted that the above transmission times can be determined by the period of the reference signal resource (see the preceding related description). The first transmission time in every N transmission times can be configured by the base station or determined by certain rules, such as by the system frame number. For example, as shown in Figure 5c, N=5 and N²=2 are configured.

[0282] Optionally, the transmission time of the first reference signal satisfies the following formula (9):

[0283] The transmission time of the second reference signal satisfies the following formula (10):

[0284] in, n represents the number of time slots in a frame. f Indicates the system frame number (SFN). T represents the slot index in a frame. offset T represents the time slot offset of the reference signal resource within one period. CSI-RS The period of the reference signal resource is represented by N0, which is a constant and can be specified by the protocol, defaulted, or indicated by the base station. It should be noted that the rounding up in the above two formulas (9) and (10) can also be rounding down or ordinary parentheses. In addition, the above two formulas (9) and (10) can also be in other equivalent forms, which are not limited here.

[0285] Optionally, for aperiodic reference signal resources, the method can be used to determine whether the first reference signal or the second reference signal is transmitted at the corresponding transmission time of the reference signal resource.

[0286] Method 2-1:

[0287] This can be indicated by the first signaling that triggers the reference signal resource, for example, by adding a 1-bit field to the first signaling, or by the scrambling sequence used to trigger the first signaling.

[0288] Method 2-2:

[0289] The configuration can be set in the trigger state associated with the aperiodic reference signal resource. Optionally, the trigger state can be associated with multiple aperiodic reference signal resources. In this case, the multiple aperiodic reference signal resources can share a single configuration information, or each aperiodic reference signal resource can have different configuration information, or the multiple aperiodic reference signal resources can be divided into multiple groups, with each group sharing a single configuration information. It should be noted that the configuration information here is used to indicate whether a first reference signal or a second reference signal is being transmitted, or in other words, to indicate whether the terminal is receiving a first reference signal or a second reference signal.

[0290] Furthermore, the aforementioned association can be indirect. For example, a trigger state can be associated with at least one reporting configuration, and the reporting configuration can be associated with at least one aperiodic reference signal resource. In this case, it can be said that the trigger state is associated with the aperiodic reference signal resource.

[0291] Furthermore, the base station will configure a reporting configuration associated with the reference signal resource (the aforementioned first reporting configuration). When the terminal reports according to the reporting configuration, the time domain position of the reference signal used (the aforementioned first target reference signal) is no later than the time domain position of the CSI reference resource, and the reference signal is the last reference signal transmitted on the reference signal resource (it can be the first reference signal or the second reference signal). The time domain position of the CSI reference resource is determined by at least one of the following: reporting time, uplink subcarrier spacing configuration, downlink subcarrier configuration, downlink timeslot position, and CSI calculation delay requirement.

[0292] Example 2: The reference signal resources corresponding to the first reference signal and the second reference signal belong to the same set of reference signal resources. In this example, the reference signal resources used to transmit the first reference signal and the reference signal resources used to transmit the second reference signal are configured as different reference signal resources within the same set of reference signal resources. The reference signal resources can be periodic, aperiodic, or semi-persistent. Additionally, the base station needs to indicate the port mapping relationship, that is, the mapping relationship between the antenna ports corresponding to the first reference signal in different frequency domain units or time units and the antenna ports of the second reference signal.

[0293] Optionally, the reference signal resource set includes only one reference signal resource for transmitting a first reference signal and multiple reference signal resources for transmitting a second reference signal. Further, the reference signal resource for transmitting the first reference signal and the multiple reference signal resources for transmitting the second reference signal also satisfy at least one of the following:

[0294] a) There is an association relationship among the plurality of reference signal resources used to transmit the second reference signal. For example, ports with the same index of these reference signal resources correspond to the same antenna port, or these reference signal resources have a quasi-co-location (QCL) relationship, or these reference signals are associated with the same reference signal resource, such as a QCL relationship.

[0295] b) The reference signal resources used to transmit the first reference signal are associated with multiple reference signal resources used to transmit the second reference signal, for example, there is a QCL relationship.

[0296] c) The base station indicates the time interval in the time domain of the plurality of reference signal resources used to transmit the second reference signal.

[0297] Optionally, in the reference signal resource set, there are multiple reference signal resources for transmitting a first reference signal and multiple reference signal resources for transmitting a second reference signal. The multiple reference signal resources for transmitting the second reference signal are divided into multiple groups. Further, the multiple reference signal resources for transmitting the first reference signal and the multiple reference signal resources for transmitting the second reference signal also satisfy at least one of the following:

[0298] a) Each set of reference signal resources used to transmit the second reference signal is associated with one of the multiple reference signal resources used to transmit the first reference signal, or there is an association relationship, such as a QCL relationship.

[0299] b) Within the set of reference signal resources used to transmit the second reference signal, there are correlations between different reference signal resources. For example, ports with the same index of reference signal resources in the same set correspond to the same antenna port, or these reference signal resources have a quasi-co-location (QCL) relationship, or these reference signals have a correlation with the same reference signal resource, such as a QCL relationship.

[0300] c) For reference signal resources within the same group, the base station indicates the time interval of these reference signal resources in the time domain.

[0301] Optionally, the reference signal resources in different groups have the same time interval in the time domain.

[0302] Furthermore, the base station will configure a reporting configuration associated with the reference signal resource set (the aforementioned second reporting configuration). When the terminal reports according to the reporting configuration, it can determine the reference signal used based on any of the following:

[0303] a) The time domain position of the reference signal used is no later than the time domain position of the CSI reference resource, and the reference signal is the last reference signal transmitted on all reference signal resources in the signal resource set (it can be the first reference signal or the second reference signal);

[0304] b) Alternatively, the time-domain position of the reference signal used is no later than the time-domain position of the CSI reference resource, and the reference signal is the last transmitted reference signal on all reference signal resources associated with the reference signal resource set (it can be either the first reference signal or the second reference signal). For example, the reference signal resource set includes reference signal resources #1, #2, #3, #4, #5, and #6. Reference signal resources #1 and #2 are used to transmit the first reference signal, and the remaining reference signal resources are used to transmit the second reference signal. If reference signal resources #3 and #4 are grouped together and associated with reference signal resource #1, and reference signal resources #5 and #6 are grouped together and associated with reference signal resource #2, then the time domain position of the reference signal used is no later than the time domain position of the CSI reference resource, and it is either the last reference signal transmitted on the reference signal resource in {reference signal resource #3, reference signal resource #4, reference signal resource #1}, or the last reference signal transmitted on the reference signal resource in {reference signal resource #5, reference signal resource #6, reference signal resource #2}.

[0305] Example 3: The reference signal resources corresponding to the first reference signal and the second reference signal belong to different reference signal resource sets. In this example, the reference signal resources used to transmit the first reference signal and the reference signal resources used to transmit the second reference signal are configured in different reference signal resource sets. The reference signal resources can be periodic, aperiodic, three-dimensional, or semi-continuous. Additionally, the base station needs to indicate the port mapping relationship, that is, the mapping relationship between the antenna ports corresponding to the first reference signal in different frequency domain units or time units and the antenna ports of the second reference signal.

[0306] For ease of description, the reference signal resource set to which the reference signal resource corresponding to the first reference signal belongs will be referred to as the first reference signal resource set, and the reference signal resource set to which the reference signal resource corresponding to the second reference signal belongs will be referred to as the second reference signal resource set.

[0307] Optionally, the second reference signal resource set has multiple reference signal resources for transmitting the second reference signal, and satisfies at least one of the following:

[0308] a) There are associations among multiple reference signal resources in the same second reference signal resource set. For example, ports with the same index of these reference signal resources correspond to the same antenna port, or there is a QCL relationship among the multiple reference signal resources, or there is an association between the multiple reference signal resources and the same reference signal resource.

[0309] b) There is an association between the reference signal resources in the second reference signal resource set and the reference signal resources in the first reference signal resource set, such as a QCL relationship.

[0310] c) The base station indicates the time interval in the time domain of the plurality of reference signal resources used to transmit the second reference signal.

[0311] Optionally, the first reference signal resource set has multiple reference signal resources, and the second reference signal resource set has multiple reference signal resources divided into multiple groups, and satisfies at least one of the following:

[0312] a) Each set of reference signal resources in the second set of reference signal resources is associated with a reference signal resource in the first set of reference signal resources, or there is an association relationship, such as a QCL relationship.

[0313] b) Within each group of reference signal resources in the second reference signal resource set, there are correlations between different reference signal resources. For example, ports with the same index in the same group of reference signal resources correspond to the same antenna port, or there is a QCL relationship between reference signal resources in the same group, or there is a correlation between reference signal resources in the same group and the same reference signal resource.

[0314] c) For reference signal resources within the same group in the second reference signal resource set, the base station indicates the time interval in the time domain for these reference signal resources. Optionally, the time interval in the time domain is the same for reference signal resources in different groups.

[0315] Optionally, the first reference signal resource set and the second reference signal resource set are associated with different reporting configurations. Specifically, the reporting configuration in the reporting configuration associated with the reference signal resource set of the second reference signal is 'None'.

[0316] Optionally, the base station will configure a reporting configuration (the aforementioned third reporting configuration), which is associated with both the first and second reference signal resource sets. When the terminal reports according to this reporting configuration, the reference signal used satisfies any of the following:

[0317] a) The time domain position of the reference signal used is no later than the time domain position of the CSI reference resource, and the reference signal is the last reference signal transmitted on the reference signal resource of the first reference signal resource set and the reference signal resource of the second reference signal set (it can be the first reference signal or the second reference signal).

[0318] b) Alternatively, the time-domain location of the reference signal used is no later than the time-domain location of the CSI reference resource, and the reference signal is the last reference signal transmitted on the reference signal resource associated with the first reference signal resource set and the second reference signal resource set (which may be the first reference signal or the second reference signal). For example, the first reference signal resource set has reference signal resource #1 and reference signal resource #2, and the second reference signal resource set has reference signal resource #3, reference signal resource #4, reference signal resource #5, and reference signal resource #6. Reference signal resources #3 and #4 are a group and associated with reference signal resource #1, and reference signal resources #5 and #6 are a group and associated with reference signal resource #2. Then, the time domain position of the reference signal used is no later than the time domain position of the CSI reference resource, and the reference signal is either the last reference signal transmitted on the reference signal resource in {reference signal resource #3, reference signal resource #4, reference signal resource #1}, or the last reference signal transmitted on the reference signal resource in {reference signal resource #5, reference signal resource #6, reference signal resource #2}.

[0319] Example 4:

[0320] The second reference signal can be carried by Q reference signal resources. That is, the reference signals transmitted on the Q reference signal resources constitute a second reference signal, or the terminal receives the second reference signal on the Q reference signal resources, or the ports of the Q reference signal resources constitute the ports of the second reference signal. In this case, the corresponding reference signal resources for transmitting the second reference signal or the reference signal resources corresponding to the second reference signal in the previous embodiment description can be replaced with a set of reference signal resources, wherein the second reference signal will be transmitted through Q reference signal resources in a set of reference signal resources.

[0321] Similarly, the first reference signal can also be carried by Q reference signal resources. That is, the reference signals transmitted on the Q reference signal resources constitute a first reference signal, or the terminal receives the first reference signal on the Q reference signal resources, or the ports of the Q reference signal resources constitute the ports of the first reference signal. In this case, the corresponding reference signal resources used to transmit the first reference signal or the reference signal resources corresponding to the first reference signal in the previous embodiments can also be replaced with a set of reference signal resources, in which the first reference signal will be transmitted through Q reference signal resources in a set of reference signal resources.

[0322] Furthermore, if both the second reference signal and the first reference signal are carried by Q reference signal resources, the base station can indicate or agree on Q port mapping relationships. Each port mapping relationship indicates the port mapping relationship between one of the Q reference signal resources used to carry the first reference signal and one of the Q reference signal resources used to carry the second reference signal. Optionally, the above Q port mapping relationships can be the same, in which case the base station only needs to indicate or agree on one port mapping relationship. Furthermore, the one-to-one mapping relationship between the Q reference signal resources used to carry the first reference signal and the Q reference signal resources used to carry the second reference signal can be indicated by the base station, agreed on by the protocol, or defaulted.

[0323] This embodiment provides a configuration method for transmitting a single reference signal using multiple reference signal resources, and also provides a method for configuring port mapping relationships. Based on this configuration, the terminal can perform channel measurements with low pilot overhead.

[0324] The channel state information processing method provided in this application can be executed by a channel state information processing device. This application uses the example of a channel state information processing device executing the channel state information processing method to illustrate the channel state information processing device provided in this application.

[0325] This application provides a channel state information processing apparatus. As an example, the channel state information processing apparatus may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0326] The channel state information processing device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0327] Specifically, referring to Figure 6, when the channel state information processing device is a terminal or a component within a terminal, the channel state information processing device 600 includes:

[0328] The first receiving module 601 is used to receive first configuration information sent by the network side device, and to receive a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, where P2 > P1 and P1 and P2 are both positive integers. The first configuration information is used to configure the first reference signal and the second reference signal.

[0329] The second receiving module 602 is used to receive second configuration information, which is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports;

[0330] The first transmitting module 603 is used to determine the CSI of the P2 antenna ports according to the first reference signal or the second reference signal, and to report the CSI according to the second configuration information;

[0331] There is a mapping relationship between the P1 antenna ports and the P2 antenna ports.

[0332] Optionally, the first reference signal and the second reference signal satisfy any one of the following:

[0333] The first reference signal and the second reference signal correspond to the same reference signal resource;

[0334] The reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set;

[0335] The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set;

[0336] The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

[0337] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a periodic or semi-continuous reference signal resource, the apparatus further includes:

[0338] The first determining module is configured to determine the transmission times corresponding to the first reference signal and the second reference signal respectively based on the first indication information sent by the network-side device, wherein the first indication information is used to indicate at least one of the following:

[0339] The first bit diagram, where one bit in the first bit diagram corresponds to at least one transmission time;

[0340] The first period and N1 time offsets in the first period, where N1 is a positive integer, are used to determine N1 transmission times in the first period. The N1 transmission times are used to transmit the second reference signal, and the other transmission times in the first period other than the N1 transmission times are used to transmit the first reference signal.

[0341] The second cycle and the first duration in the second cycle, the transmission time corresponding to the first duration in the second cycle is used to transmit the second reference signal, and the other transmission times in the second cycle other than the transmission time corresponding to the first duration are used to transmit the first reference signal;

[0342] The third cycle is used to determine the transmission time of the first reference signal;

[0343] The fourth period is used to determine the transmission time of the second reference signal.

[0344] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is an aperiodic reference signal resource, the apparatus further includes a second determining module, used for at least one of the following:

[0345] The transmission time corresponding to the aperiodic reference signal resource is determined according to the first signaling sent by the network-side device. The first signaling is either a signaling that triggers the reference signal resource or a signaling that triggers the reporting configuration associated with the reference signal resource. The first signaling is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time.

[0346] The transmission time corresponding to the aperiodic reference signal resource is determined according to the second signaling sent by the network-side device. The second signaling is used to indicate a trigger state, which is associated with the reference signal resource. The trigger state is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time.

[0347] Optionally, if the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource;

[0348] The first sending module 603 is further configured to: report the CSI according to the first reporting configuration and the first target reference signal;

[0349] Wherein, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following:

[0350] The reference signal resource is the last reference signal in the time domain;

[0351] The reference signal is the reference signal corresponding to the reference signal resource.

[0352] Optionally, when the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same set of reference signal resources, the reference signal resource corresponding to the first reference signal is the first reference signal resource, and the reference signal resource corresponding to the second reference signal is the second reference signal resource. The number of the first reference signal resources is M, and the number of the second reference signal resources is L, where M is an integer greater than or equal to 1, and L is an integer greater than or equal to 1.

[0353] Optionally, when M equals 1, there is an association relationship between the L second reference signal resources, and / or, there is an association relationship between the first reference signal resource and the L second reference signal resources.

[0354] Optionally, when M is greater than 1, the L second reference signal resources are divided into L1 groups of second reference signal resources, where L1 is an integer greater than or equal to 1; wherein:

[0355] Each second reference signal resource group is associated with one of the M first reference signal resources; and / or,

[0356] There are correlations between different second reference signal resources within each second reference signal resource group.

[0357] Optionally, if the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or the reference signal resource.

[0358] The first sending module 603 is further configured to: report the CSI according to the second reporting configuration and the second target reference signal;

[0359] Wherein, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following:

[0360] The reference signal in the reference signal resource set is the last reference signal in the time domain;

[0361] The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set;

[0362] The reference signals corresponding to the reference signal resources in the reference signal resource set;

[0363] The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

[0364] Optionally, when the first reference signal corresponds to a reference signal resource in a first reference signal resource set, and the second reference signal corresponds to a reference signal resource in a second reference signal resource set, there is an association relationship between the multiple reference signal resources in the second reference signal resource set; and / or,

[0365] There is a correlation between the reference signal resources in the second reference signal resource set and the reference signal resources in the first reference signal resource set.

[0366] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the reference signal resources in the second reference signal resource set are divided into K second reference signal resource groups, where K is a positive integer;

[0367] Each of the second reference signal resource groups is associated with a reference signal resource in the first reference signal resource set, and / or, there is an association relationship between different reference signal resources within each of the second reference signal resource groups.

[0368] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a third reporting configuration associated with the first reference signal resource set and the second reference signal resource set.

[0369] The first sending module 603 is further configured to: report the CSI according to the third reporting configuration and the third target reference signal;

[0370] Wherein, the third target reference signal is either the first reference signal or the second reference signal, the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource, and the third target reference signal is any one of the following:

[0371] The reference signal whose time-domain position is the last one in the reference signal resource set corresponding to the reference signal resource;

[0372] The reference signal whose time-domain position is the last one in the reference signal resources associated with the target reference signal resource set;

[0373] The reference signal corresponding to the reference signal resource in the target reference signal resource set;

[0374] The reference signal corresponding to the reference signal resource associated with the target reference signal resource set;

[0375] The target reference signal resource set is the first reference signal resource set and / or the second reference signal resource set.

[0376] The channel state information processing device provided in this application embodiment can implement all the processes implemented in the method embodiment described in FIG3 above and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0377] The configuration information sending method provided in this application can be executed by a configuration information sending device. This application uses the example of a configuration information sending device executing the configuration information sending method to illustrate the configuration information sending device provided in this application.

[0378] Referring to Figure 7, when the configuration information sending device is a network-side device or a component within a network-side device, the configuration information sending device 700 includes:

[0379] The second sending module 701 is used to send the first configuration information and the second configuration information to the terminal.

[0380] Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports;

[0381] The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

[0382] Optionally, the first reference signal and the second reference signal satisfy any one of the following:

[0383] The first reference signal and the second reference signal correspond to the same reference signal resource;

[0384] The reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set;

[0385] The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set;

[0386] The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

[0387] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a periodic or semi-continuous reference signal resource, the second transmitting module 701 is further configured to:

[0388] Send a first indication message to the terminal, the first indication message being used to indicate at least one of the following:

[0389] The first bit diagram, where one bit in the first bit diagram corresponds to at least one transmission time;

[0390] The first period and N1 time offsets in the first period, where N1 is a positive integer, are used to determine N1 transmission times in the first period. The N1 transmission times are used to transmit the second reference signal, and the other transmission times in the first period other than the N1 transmission times are used to transmit the first reference signal.

[0391] The second cycle and the first duration in the second cycle, the transmission time corresponding to the first duration in the second cycle is used to transmit the second reference signal, and the other transmission times in the second cycle other than the transmission time corresponding to the first duration are used to transmit the first reference signal;

[0392] The third cycle is used to determine the transmission time of the first reference signal;

[0393] The fourth period is used to determine the transmission time of the second reference signal.

[0394] Optionally, when the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is an aperiodic reference signal resource, the second transmitting module 701 is further configured to perform at least one of the following:

[0395] Send a first signaling to the terminal. The first signaling is either a signaling to trigger the reference signal resource or a signaling to trigger a reporting configuration associated with the reference signal resource. The first signaling is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time corresponding to the aperiodic reference signal resource.

[0396] A second signaling is sent to the terminal, the second signaling being used to indicate a trigger state, the trigger state being associated with the reference signal resource, the trigger state being used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time corresponding to the aperiodic reference signal resource.

[0397] Optionally, if the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource;

[0398] Wherein, the CSI associated with the first reported configuration corresponds to the first target reference signal, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following:

[0399] The reference signal resource is the last reference signal in the time domain;

[0400] The reference signal is the reference signal corresponding to the reference signal resource.

[0401] Optionally, when the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same set of reference signal resources, the reference signal resource corresponding to the first reference signal is the first reference signal resource, and the reference signal resource corresponding to the second reference signal is the second reference signal resource. The number of the first reference signal resources is M, and the number of the second reference signal resources is L, where M is an integer greater than or equal to 1, and L is an integer greater than or equal to 1.

[0402] Optionally, when M equals 1, there is an association relationship between the L second reference signal resources, and / or, there is an association relationship between the first reference signal resource and the L second reference signal resources.

[0403] Optionally, when M is greater than 1, the L second reference signal resources are divided into L1 groups of second reference signal resources, where L1 is an integer greater than or equal to 1; wherein:

[0404] Each second reference signal resource group is associated with one of the M first reference signal resources; and / or,

[0405] There are correlations between different second reference signal resources within each second reference signal resource group.

[0406] Optionally, if the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or the reference signal resource.

[0407] Wherein, the CSI associated with the second reporting configuration corresponds to the second target reference signal, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following:

[0408] The reference signal in the reference signal resource set is the last reference signal in the time domain;

[0409] The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set;

[0410] The reference signals corresponding to the reference signal resources in the reference signal resource set;

[0411] The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

[0412] Optionally, when the first reference signal corresponds to a reference signal resource in a first reference signal resource set, and the second reference signal corresponds to a reference signal resource in a second reference signal resource set, there is an association relationship between the multiple reference signal resources in the second reference signal resource set; and / or,

[0413] At least some of the reference signal resources in the second reference signal resource set are associated with the reference signal resources in the first reference signal resource set.

[0414] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the reference signal resources in the second reference signal resource set are divided into K second reference signal resource groups, where K is a positive integer;

[0415] Each of the second reference signal resource groups is associated with a reference signal resource in the first reference signal resource set, and / or, there is an association relationship between different reference signal resources within each of the second reference signal resource groups.

[0416] Optionally, when the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a third reporting configuration associated with the first reference signal resource set and the second reference signal resource set.

[0417] Wherein, the CSI associated with the third reporting configuration corresponds to the third target reference signal, the third target reference signal is either the first reference signal or the second reference signal, the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource, and the third target reference signal is any one of the following:

[0418] The reference signal whose time-domain position is the last one in the reference signal resource set corresponding to the reference signal resource;

[0419] The reference signal whose time-domain position is the last one in the reference signal resources associated with the target reference signal resource set;

[0420] The reference signal corresponding to the reference signal resource in the target reference signal resource set;

[0421] The reference signal corresponding to the reference signal resource associated with the target reference signal resource set;

[0422] The target reference signal resource set is the first reference signal resource set and / or the second reference signal resource set.

[0423] The configuration information sending device 700 provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG4 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0424] As shown in Figure 8, this application embodiment also provides a communication device 800, including a processor 801 and a memory 802. The memory 802 stores a program or instructions that can run on the processor 801. For example, when the communication device 800 is a terminal, the program or instructions executed by the processor 801 implement the various steps of the above-described channel state information processing method embodiment and achieve the same technical effect. When the communication device 800 is a network-side device, the program or instructions executed by the processor 801 implement the various steps of the above-described configuration information sending method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0425] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiment shown in FIG3. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal may be the channel state information processing device shown in FIG6. Specifically, FIG9 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0426] The terminal 900 includes, but is not limited to, at least some of the following components: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

[0427] Those skilled in the art will understand that the terminal 900 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 910 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 9 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0428] It should be understood that, in this embodiment, the input unit 904 may include a graphics processor 9041 and a microphone 9042. The graphics processor 9041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0429] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 901 can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network-side device. Typically, the radio frequency unit 901 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0430] The memory 909 can be used to store software programs or instructions, as well as various data. The memory 909 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 909 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 909 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0431] Processor 910 may include one or more processing units; optionally, processor 910 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 910.

[0432] The radio frequency unit 901 is used for:

[0433] The system receives first configuration information sent by a network-side device, and receives a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, where P2 > P1 and P1 and P2 are both positive integers. The first configuration information is used to configure the first reference signal and the second reference signal; and...

[0434] Receive second configuration information, which is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports;

[0435] The processor 910 is configured to: determine the channel state information (CSI) of the P2 antenna ports based on the first reference signal or the second reference signal;

[0436] Radio frequency unit 901 is used to report the CSI according to the second configuration information;

[0437] There is a mapping relationship between the P1 antenna ports and the P2 antenna ports.

[0438] In this embodiment, after receiving the first reference signal corresponding to P1 antenna ports and the second reference signal corresponding to P2 antenna ports, the terminal can determine the Channel State Information (CSI) of the P2 antenna ports corresponding to the second reference signal based on either the first or second reference signal and send it to the network-side device. Here, P2 > P1. This allows the terminal to determine the CSI of the P2 antenna ports not only based on the second reference signal but also based on the first reference signal, which has fewer antenna ports, making the CSI determination method more flexible. Furthermore, the terminal can determine the channel state information of the P2 antenna ports corresponding to the second reference signal based on the low-overhead first reference signal. This allows the network-side device to increase the transmission interval of the second reference signal, reducing the need for frequent transmission and saving network-side device overhead and resource overhead associated with transmitting reference signals.

[0439] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned channel state information processing method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0440] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG4. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0441] Specifically, this application embodiment also provides a network-side device, which may be the channel state information processing device shown in FIG7. As shown in FIG10, the network-side device 1000 includes: an antenna 101, a radio frequency device 102, a baseband device 103, a processor 104, and a memory 105. The antenna 101 is connected to the radio frequency device 102. In the uplink direction, the radio frequency device 102 receives information through the antenna 101 and sends the received information to the baseband device 103 for processing. In the downlink direction, the baseband device 103 processes the information to be transmitted and sends it to the radio frequency device 102. The radio frequency device 102 processes the received information and transmits it through the antenna 101.

[0442] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 103, which includes a baseband processor.

[0443] The baseband device 103 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG10. One of the chips is, for example, a baseband processor, which is connected to the memory 105 via a bus interface to call the program or instructions in the memory 105 to execute the network-side device operation shown in the above method embodiment.

[0444] The network-side device may also include a network interface 106, such as a Common Public Radio Interface (CPRI).

[0445] The radio frequency device 102 is used to: send first configuration information and second configuration information to the terminal;

[0446] Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports;

[0447] The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

[0448] In addition, the network-side device 1000 of this application embodiment also includes: a program or instructions stored in the memory 105 and executable on the processor 104. The processor 104 calls the program or instructions in the memory 105 to execute the methods executed by each module shown in FIG7 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0449] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described channel state information processing method or configuration information transmission method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0450] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0451] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described channel state information processing method or configuration information sending method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0452] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0453] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described channel state information processing method or configuration information transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0454] This application also provides a wireless communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the channel state information processing method described above, and the network-side device can be used to execute the steps of the configuration information sending method described above.

[0455] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0456] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0457] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A channel state information processing method, comprising: The terminal receives first configuration information sent by the network-side device, and receives a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, where P2 > P1 and P1 and P2 are both positive integers. The first configuration information is used to configure the first reference signal and the second reference signal. The terminal receives second configuration information, which is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports; The terminal determines the Channel State Information (CSI) of the P2 antenna ports based on the first reference signal or the second reference signal, and reports the CSI according to the second configuration information. There is a mapping relationship between the P1 antenna ports and the P2 antenna ports.

2. The method according to claim 1, wherein, The first reference signal and the second reference signal satisfy any one of the following: The first reference signal and the second reference signal correspond to the same reference signal resource; The reference signal resources corresponding to the first reference signal and the reference signal resources corresponding to the second reference signal both belong to the same reference signal resource set. The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set; The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

3. The method according to claim 2, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a periodic or semi-continuous reference signal resource, the method further includes: The terminal determines the transmission times corresponding to the first reference signal and the second reference signal respectively based on the first indication information sent by the network-side device, wherein the first indication information is used to indicate at least one of the following: The first bit diagram, where one bit in the first bit diagram corresponds to at least one transmission time; The first period and N1 time offsets in the first period, where N1 is a positive integer, are used to determine N1 transmission times in the first period. The N1 transmission times are used to transmit the second reference signal, and the other transmission times in the first period other than the N1 transmission times are used to transmit the first reference signal. The second cycle and the first duration in the second cycle, the transmission time corresponding to the first duration in the second cycle is used to transmit the second reference signal, and the other transmission times in the second cycle other than the transmission time corresponding to the first duration are used to transmit the first reference signal; The third cycle is used to determine the transmission time of the first reference signal; The fourth period is used to determine the transmission time of the second reference signal.

4. The method according to claim 2, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a non-periodic reference signal resource, the method further includes at least one of the following: The terminal determines the transmission time corresponding to the aperiodic reference signal resource according to the first signaling sent by the network-side device. The first signaling is either a signaling that triggers the reference signal resource or a signaling that triggers the reporting configuration associated with the reference signal resource. The first signaling is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time. The terminal determines the transmission time corresponding to the aperiodic reference signal resource according to the second signaling sent by the network-side device. The second signaling is used to indicate a trigger state, which is associated with the reference signal resource. The trigger state is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time.

5. The method according to any one of claims 2-4, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource; The step of reporting the CSI according to the second configuration information includes: The terminal reports the CSI according to the first reporting configuration and the first target reference signal; Wherein, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following: The reference signal resource is the last reference signal in the time domain; The reference signal is the reference signal corresponding to the reference signal resource.

6. The method according to claim 2, wherein, When the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same set of reference signal resources, the reference signal resource corresponding to the first reference signal is the first reference signal resource, and the reference signal resource corresponding to the second reference signal is the second reference signal resource. The number of the first reference signal resources is M, and the number of the second reference signal resources is L, where M is an integer greater than or equal to 1, and L is an integer greater than or equal to 1.

7. The method according to claim 6, wherein, When M equals 1, there is an association between the L second reference signal resources, and / or, there is an association between the first reference signal resource and the L second reference signal resources.

8. The method according to claim 6, wherein, When M is greater than 1, the L second reference signal resources are divided into L1 groups of second reference signal resources, where L1 is an integer greater than or equal to 1; Wherein, each second reference signal resource group is associated with one of the M first reference signal resources; and / or, There are correlations between different second reference signal resources within each second reference signal resource group.

9. The method according to any one of claims 2, 6-8, wherein, When the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or reference signal resource. The step of reporting the CSI according to the second configuration information includes: The terminal reports the CSI according to the second reporting configuration and the second target reference signal; Wherein, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following: The reference signal in the reference signal resource set is the last reference signal in the time domain; The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set; The reference signals corresponding to the reference signal resources in the reference signal resource set; The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

10. The method according to claim 2, wherein, When the first reference signal corresponds to a reference signal resource in a first reference signal resource set, and the second reference signal corresponds to a reference signal resource in a second reference signal resource set, there is an association relationship between the multiple reference signal resources in the second reference signal resource set; and / or, At least some of the reference signal resources in the second reference signal resource set are associated with the reference signal resources in the first reference signal resource set.

11. The method according to claim 2, wherein, When the first reference signal corresponds to a reference signal resource in the first reference signal resource set, and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the reference signal resources in the second reference signal resource set are divided into K second reference signal resource groups, where K is a positive integer; Each of the second reference signal resource groups is associated with a reference signal resource in the first reference signal resource set, and / or, there is an association relationship between different reference signal resources within each of the second reference signal resource groups.

12. The method according to claim 2, 10 or 11, wherein, When the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a third reporting configuration associated with the first reference signal resource set and the second reference signal resource set. The step of reporting the CSI according to the second configuration information includes: The terminal reports the CSI according to the third reporting configuration and the third target reference signal; Wherein, the third target reference signal is either the first reference signal or the second reference signal, the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource, and the third target reference signal is any one of the following: The reference signal whose time-domain position is the last one in the reference signal resource set corresponding to the reference signal resource; The reference signal whose time-domain position is the last one in the reference signal resources associated with the target reference signal resource set; The reference signal corresponding to the reference signal resource in the target reference signal resource set; The reference signal corresponding to the reference signal resource associated with the target reference signal resource set; The target reference signal resource set is the first reference signal resource set and / or the second reference signal resource set.

13. A method for sending configuration information, comprising: The network-side device sends the first configuration information and the second configuration information to the terminal. Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports; The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

14. The method according to claim 13, wherein, The first reference signal and the second reference signal satisfy any one of the following: The first reference signal and the second reference signal correspond to the same reference signal resource; The reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set; The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set; The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

15. The method according to claim 14, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a periodic or semi-continuous reference signal resource, the method further includes: The network-side device sends a first indication message to the terminal, the first indication message being used to indicate at least one of the following: The first bit diagram, where one bit in the first bit diagram corresponds to at least one transmission time; The first period and N1 time offsets in the first period, where N is a positive integer, are used to determine N1 transmission times in the first period. The N1 transmission times are used to transmit the second reference signal, and the other transmission times in the first period other than the N1 transmission times are used to transmit the first reference signal. The second cycle and the first duration in the second cycle, the transmission time corresponding to the first duration in the second cycle is used to transmit the second reference signal, and the other transmission times in the second cycle other than the transmission time corresponding to the first duration are used to transmit the first reference signal; The third cycle is used to determine the transmission time of the first reference signal; The fourth period is used to determine the transmission time of the second reference signal.

16. The method of claim 14, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, and the reference signal resource is a non-periodic reference signal resource, the method further includes at least one of the following: The network-side device sends a first signaling message to the terminal. The first signaling message is either a signaling message that triggers the reference signal resource or a signaling message that triggers a reporting configuration associated with the reference signal resource. The first signaling message is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time corresponding to the aperiodic reference signal resource. The network-side device sends a second signaling message to the terminal. The second signaling message is used to indicate a trigger state, which is associated with the reference signal resource. The trigger state is used to instruct the terminal to receive the first reference signal or the second reference signal at the transmission time corresponding to the aperiodic reference signal resource.

17. The method according to any one of claims 14-16, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource; Wherein, the CSI associated with the first reported configuration corresponds to the first target reference signal, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following: The reference signal resource is the last reference signal in the time domain; The reference signal is the reference signal corresponding to the reference signal resource.

18. The method according to claim 14, wherein, When the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same set of reference signal resources, the reference signal resource corresponding to the first reference signal is the first reference signal resource, and the reference signal resource corresponding to the second reference signal is the second reference signal resource. The number of the first reference signal resources is M, and the number of the second reference signal resources is L, where M is an integer greater than or equal to 1, and L is an integer greater than or equal to 1.

19. The method according to claim 18, wherein, When M equals 1, there is an association between the L second reference signal resources, and / or, there is an association between the first reference signal resource and the L second reference signal resources.

20. The method according to claim 18, wherein, When M is greater than 1, the L second reference signal resources are divided into L1 groups of second reference signal resources, where L1 is an integer greater than or equal to 1; where, Each second reference signal resource group is associated with one of the M first reference signal resources; and / or, There are correlations between different second reference signal resources within each second reference signal resource group.

21. The method according to any one of claims 14, 18-20, wherein, When the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or reference signal resource. Wherein, the CSI associated with the second reporting configuration corresponds to the second target reference signal, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following: The reference signal in the reference signal resource set is the last reference signal in the time domain; The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set; The reference signals corresponding to the reference signal resources in the reference signal resource set; The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

22. The method according to claim 14, wherein, When the first reference signal corresponds to a reference signal resource in a first reference signal resource set, and the second reference signal corresponds to a reference signal resource in a second reference signal resource set, there is an association relationship between the multiple reference signal resources in the second reference signal resource set; and / or, At least some of the reference signal resources in the second reference signal resource set are associated with the reference signal resources in the first reference signal resource set.

23. The method according to claim 14, wherein, When the first reference signal corresponds to a reference signal resource in the first reference signal resource set, and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the reference signal resources in the second reference signal resource set are divided into K second reference signal resource groups, where K is a positive integer; Each of the second reference signal resource groups is associated with a reference signal resource in the first reference signal resource set, and / or, there is an association relationship between different reference signal resources within each of the second reference signal resource groups.

24. The method according to claim 14, 22 or 23, wherein, When the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a third reporting configuration associated with the first reference signal resource set and the second reference signal resource set. Wherein, the CSI associated with the third reporting configuration corresponds to the third target reference signal, the third target reference signal is either the first reference signal or the second reference signal, the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource, and the third target reference signal is any one of the following: The reference signal whose time-domain position is the last one in the reference signal resource set corresponding to the reference signal resource; The reference signal whose time-domain position is the last one in the reference signal resources associated with the target reference signal resource set; The reference signal corresponding to the reference signal resource in the target reference signal resource set; The reference signal corresponding to the reference signal resource associated with the target reference signal resource set; The target reference signal resource set is the first reference signal resource set and / or the second reference signal resource set.

25. A channel state information processing apparatus, comprising: The first receiving module is used to receive first configuration information sent by the network-side device, and to receive a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports according to the first configuration information, where P2 > P1 and P1 and P2 are both positive integers. The first configuration information is used to configure the first reference signal and the second reference signal. The second receiving module is used to receive second configuration information, which is used to indicate the configuration of the CSI report corresponding to the P2 antenna ports; The first transmitting module is configured to determine the CSI of the P2 antenna ports based on the first reference signal or the second reference signal, and report the CSI based on the second configuration information. There is a mapping relationship between the P1 antenna ports and the P2 antenna ports.

26. The apparatus according to claim 25, wherein, The first reference signal and the second reference signal satisfy any one of the following: The first reference signal and the second reference signal correspond to the same reference signal resource; The reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set; The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set; The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

27. The apparatus according to claim 26, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource; The first transmitting module is further configured to: report the CSI according to the first reporting configuration and the first target reference signal; Wherein, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following: The reference signal resource is the last reference signal in the time domain; The reference signal is the reference signal corresponding to the reference signal resource.

28. The apparatus according to claim 26, wherein, When the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or reference signal resource. The first transmitting module is further configured to: report the CSI according to the second reporting configuration and the second target reference signal; Wherein, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following: The reference signal in the reference signal resource set is the last reference signal in the time domain; The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set; The reference signals corresponding to the reference signal resources in the reference signal resource set; The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

29. The apparatus according to claim 26, wherein, When the first reference signal corresponds to a reference signal resource in the first reference signal resource set and the second reference signal corresponds to a reference signal resource in the second reference signal resource set, the second configuration information includes a third reporting configuration associated with the first reference signal resource set and the second reference signal resource set. The first transmitting module is further configured to: report the CSI according to the third reporting configuration and the third target reference signal; Wherein, the third target reference signal is either the first reference signal or the second reference signal, the time domain position of the third target reference signal is not later than the time domain position of the CSI reference resource, and the third target reference signal is any one of the following: The reference signal whose time-domain position is the last one in the reference signal resource set corresponding to the reference signal resource; The reference signal whose time-domain position is the last one in the reference signal resources associated with the target reference signal resource set; The reference signal corresponding to the reference signal resource in the target reference signal resource set; The reference signal corresponding to the reference signal resource associated with the target reference signal resource set; The target reference signal resource set is the first reference signal resource set and / or the second reference signal resource set.

30. A configuration information transmitting device, comprising: The second sending module is used to send the first configuration information and the second configuration information to the terminal. Wherein, the first configuration information is used to configure a first reference signal corresponding to P1 antenna ports and a second reference signal corresponding to P2 antenna ports, where P2 > P1, and P1 and P2 are both positive integers, and there is a mapping relationship between the P1 antenna ports and the P2 antenna ports; The second configuration information is used to indicate the configuration of the CSI reports corresponding to the P2 antenna ports.

31. The apparatus according to claim 30, wherein, The first reference signal and the second reference signal satisfy any one of the following: The first reference signal and the second reference signal correspond to the same reference signal resource; The reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set; The first reference signal corresponds to the reference signal resource in the first reference signal resource set, and the second reference signal corresponds to the reference signal resource in the second reference signal resource set; The first reference signal corresponds to at least one reference signal resource, and the second reference signal corresponds to at least one reference signal resource, wherein the at least one reference signal resource corresponding to the second reference signal includes the at least one reference signal resource corresponding to the first reference signal.

32. The apparatus according to claim 31, wherein, When the first reference signal and the second reference signal correspond to the same reference signal resource, the second configuration information includes a first reporting configuration associated with the reference signal resource; Wherein, the CSI associated with the first reported configuration corresponds to the first target reference signal, the first target reference signal is either the first reference signal or the second reference signal, the time domain position of the first target reference signal is not later than the time domain position of the CSI reference resource, and the first target reference signal is any one of the following: The reference signal resource is the last reference signal in the time domain; The reference signal is the reference signal corresponding to the reference signal resource.

33. The apparatus according to claim 31, wherein, When the reference signal resource corresponding to the first reference signal and the reference signal resource corresponding to the second reference signal belong to the same reference signal resource set, the second configuration information includes a second reporting configuration associated with the reference signal resource set or reference signal resource. Wherein, the CSI associated with the second reporting configuration corresponds to the second target reference signal, the second target reference signal is either the first reference signal or the second reference signal, the time domain position of the second target reference signal is not later than the time domain position of the CSI reference resource, and the second target reference signal is any one of the following: The reference signal in the reference signal resource set is the last reference signal in the time domain; The reference signal whose time-domain position is the last one in the reference signal resources associated with the reference signal resources in the reference signal resource set; The reference signals corresponding to the reference signal resources in the reference signal resource set; The reference signals are the reference signal resources associated with the reference signal resources in the reference signal resource set.

34. A terminal comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the channel state information processing method as described in any one of claims 1-12.

35. A network-side device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the configuration information transmission method as described in any one of claims 13-24.

36. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the channel state information processing method as described in any one of claims 1-12, or the steps of the configuration information transmission method as described in any one of claims 13-24.

37. A computer program product stored in a storage medium, the computer program product being executed by at least one processor to implement the steps of the channel state information processing method as claimed in any one of claims 1-12, or to implement the steps of the configuration information transmission method as claimed in any one of claims 13-24.

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