Wireless communication method and communication equipment

Abstract

The invention provides a wireless communication method and communication equipment. The method comprises the following steps: a first device receives a first reference signal from a second device according to configuration information of the first reference signal; the first device sends the second reference signal to the second device according to the configuration information of the second reference signal; wherein the first reference signal and the second reference signal are respectively used for determining first channel information and second channel information, and the first channel information and the second channel information are the same. In the above scheme, the first device determines the first channel information based on the first reference signal, the second device determines the second channel information based on the second reference signal, and because the first channel information and the second channel information are the same, it is equivalent that the first device and the second device know the channel information of each other. The two communication parties are helped to encrypt or scramble the transmission signal based on the same channel information, so that the security of signal transmission is improved.

Description

Wireless communication method and communication device Technical Field

[0001] The present application relates to the field of communication technology, and more particularly, to a wireless communication method and a communication device. Background Art

[0002] In a communication system, both communicating parties determine channel information based on reference signals in different transmission directions. For example, a terminal device receives a downlink reference signal to determine downlink channel information. Furthermore, the terminal device sends an uplink reference signal to a network device, which then uses the uplink reference signal to determine uplink channel information. The channel information determination methods provided by related technologies fail to meet transmission security requirements.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and a communication device. The following introduces various aspects involved in the present application.

[0005] In a first aspect, a wireless communication method is provided, including: a first device receives a first reference signal from a second device based on configuration information of the first reference signal; the first device sends a second reference signal to the second device based on the configuration information of the second reference signal; wherein the first reference signal and the second reference signal are used to determine first channel information and second channel information, respectively, and the first channel information and the second channel information are the same.

[0006] According to a second aspect, a wireless communication method is provided, comprising: a second device sending the first reference signal to a first device according to configuration information of the first reference signal; and the second device receiving the second reference signal from the first device according to the configuration information of the second reference signal; wherein the first reference signal and the second reference signal are used to determine first channel information and second channel information, respectively, and the first channel information and the second channel information are the same.

[0007] According to a third aspect, a communication device is provided, which is a first device, and includes: a receiving module for receiving the first reference signal from a second device according to configuration information of the first reference signal; and a sending module for sending the second reference signal to the second device according to the configuration information of the second reference signal; wherein the first reference signal and the second reference signal are used to determine first channel information and second channel information, respectively, and the first channel information and the second channel information are the same.

[0008] In a fourth aspect, a communication device is provided, which is a second device, and includes: a sending module for sending the first reference signal to the first device according to the configuration information of the first reference signal; a receiving module for receiving the second reference signal from the first device according to the configuration information of the second reference signal; wherein the first reference signal and the second reference signal are used to determine the first channel information and the second channel information, respectively, and the first channel information and the second channel information are the same.

[0009] In a fifth aspect, a communication device is provided, comprising a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory so that the communication device executes the method described in the first aspect or the second aspect.

[0010] In a sixth aspect, a device is provided, comprising a processor for calling a program from a memory so that the device executes the method described in the first aspect or the second aspect.

[0011] In a seventh aspect, a chip is provided, comprising a processor for calling a program from a memory so that a device equipped with the chip executes the method described in the first aspect or the second aspect.

[0012] In an eighth aspect, a computer-readable storage medium is provided, on which a program is stored, wherein the program enables a computer to execute the method described in the first aspect or the second aspect.

[0013] In a ninth aspect, a computer program product is provided, comprising a program, wherein the program enables a computer to execute the method as described in the first aspect or the second aspect.

[0014] In a tenth aspect, a computer program is provided, which enables a computer to execute the method as described in the first aspect or the second aspect.

[0015] In an embodiment of the present application, the first device determines the first channel information based on the first reference signal, and the second device determines the second channel information based on the second reference signal. Since the first channel information and the second channel information are the same, it is equivalent to the first device and the second device knowing each other's channel information, which helps the communicating parties to encrypt or scramble the transmission signal based on the same channel information, thereby improving the security of signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a system architecture diagram of a communication system to which an embodiment of the present application can be applied.

[0017] FIG2 is a flow chart of a wireless communication method according to an embodiment of the present application.

[0018] FIG3 is a schematic structural diagram of a communication device provided in one embodiment of the present application.

[0019] FIG4 is a schematic structural diagram of a communication device provided in another embodiment of the present application.

[0020] FIG5 is a schematic diagram of the structure of the device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The embodiments of the present application can be applied to various communication systems. For example, the embodiments of the present application can be applied to global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, advanced long term evolution (LTE-A) system, new radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (WiFi), fifth generation communication (5th-generation, 5G) system. The embodiments of the present application can also be applied to other communication systems, such as future communication systems. The future communication system may be, for example, a sixth-generation (6G) mobile communication system or a satellite communication system.

[0022] Traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, communication systems can support not only traditional cellular communications, but also one or more other types of communications. For example, a communication system can support one or more of the following communications: device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), vehicle to vehicle (V2V) communication, and vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to communication systems that support the above-mentioned communication methods.

[0023] The communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) networking scenario.

[0024] The communication system in the embodiments of the present application can be applied to unlicensed spectrum. The unlicensed spectrum can also be considered a shared spectrum. Alternatively, the communication system in the embodiments of the present application can also be applied to licensed spectrum. The licensed spectrum can also be considered a dedicated spectrum.

[0025] The embodiments of the present application can be applied to terrestrial networks (TN) systems as well as non-terrestrial networks (NTN) systems. As an example, the NTN system can include an NR-based NTN system and an Internet of Things (IoT)-based NTN system.

[0026] A communication system may include one or more terminal devices. The terminal devices mentioned in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

[0027] In some embodiments, the terminal device may be a station (ST) in a WLAN. In some embodiments, the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next-generation communication system (e.g., a NR system), or a terminal device in a future-evolved public land mobile network (PLMN) network.

[0028] In some embodiments, the terminal device may refer to a device that provides voice and / or data connectivity to a user. For example, the terminal device may be a handheld device or a vehicle-mounted device with wireless connection capabilities. As some specific examples, the terminal device may be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc.

[0029] In some embodiments, the terminal device can be deployed on land. For example, the terminal device can be deployed indoors or outdoors. In some embodiments, the terminal device can be deployed on the water, such as on a ship. In some embodiments, the terminal device can be deployed in the air, such as on an airplane, a balloon, or a satellite.

[0030] In addition to the terminal device, the communication system may also include one or more network devices. The network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may also be referred to as an access network device or a radio access network device. The network device may be, for example, a base station. The network device in the embodiment of the present application may refer to an access network (radio access network, RAN) node (or device) that connects the terminal device to a wireless network. Access network equipment can broadly cover various names as follows, or replace the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station may also refer to a communication module, modem or chip provided in the aforementioned device or apparatus. The base station may also be a mobile switching center and a device-to-device D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication device that performs the base station function, a network side device in a 6G network, a device that performs the base station function in a future communication system, etc. The base station may support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network equipment.

[0031] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0032] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0033] As an example and not a limitation, in an embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. In some embodiments of the present application, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. In some embodiments of the present application, the network device may also be a base station set up in a location such as land or water.

[0034] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0035] For example, Figure 1 is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. As shown in Figure 1, the communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or also referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located within the coverage area.

[0036] Figure 1 exemplarily shows a network device and two terminal devices. In some embodiments of the present application, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0037] In some embodiments of the present application, the wireless communication system shown in Figure 1 may also include other network entities such as a mobility management entity (MME) and an access and mobility management function (AMF), but the embodiments of the present application are not limited to this.

[0038] It should be understood that in the embodiments of the present application, devices having communication functions in a network / system may be referred to as communication devices. Taking the communication system 100 shown in Figure 1 as an example, the communication devices may include a network device 110 and a terminal device 120 having communication functions. Network device 110 and terminal device 120 may be the specific devices described above and will not be described in detail here. Communication devices may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, although this is not limited in the embodiments of the present application.

[0039] With the development of communication technology, communication systems will introduce physical layer security solutions based on channel information. This physical layer security solution can generate user-specific information based on dynamically changing channel information. Then, the communicating parties can encrypt or scramble the signal based on the user-specific information, thereby improving the security of signal transmission. The implementation of the physical layer security solution based on channel information requires that the communicating parties can know each other's channel information; otherwise, the receiving party will not be able to decrypt or descramble the signal transmitted by the sender. However, as mentioned above, the reference signal provided in the related art can only obtain channel information for one transmission direction, which is not conducive to the implementation of the physical layer security solution based on channel information.

[0040] The following is a detailed description of the wireless communication method provided in an embodiment of the present application in conjunction with Figure 2.

[0041] The method of Figure 2 can be performed by a first device and a second device. The first device and the second device can be any two communication devices in a communication system. For example, in some embodiments, the first device and the second device can be a terminal device and a network device, respectively. Accordingly, the communication link between the first device and the second device is an uplink and a downlink, respectively. For another example, in some embodiments, the first device and the second device can both be terminal devices. Accordingly, the communication link between the first device and the second device is a sidelink.

[0042] 2 , in steps S210 to S220 , the first device receives a first reference signal from the second device according to the configuration information of the first reference signal; and sends a second reference signal to the second device according to the configuration information of the second reference signal.

[0043] The first reference signal and the second reference signal in Figure 2 are reference signals with different transmission directions. The first reference signal is a reference signal transmitted along the communication link from the second device to the first device; the second reference signal is a reference signal transmitted along the communication link from the first device to the second device. For example, if the first device and the second device are a terminal device and a network device, respectively, the first reference signal and the second reference signal are downlink reference signals and uplink reference signals, respectively. For example, if both the first device and the second device are terminal devices, the first reference signal and the second reference signal are sidelink reference signals with different transmission directions.

[0044] In some embodiments, the first reference signal includes a channel state information reference signal (CSI-RS). The CSI-RS may be a CSI-RS corresponding to a downlink or a CSI-RS corresponding to a sidelink.

[0045] In some embodiments, the second reference signal includes a sounding reference signal (SRS). The SRS may be an SRS corresponding to an uplink or an SRS corresponding to a sidelink.

[0046] In some embodiments, the first reference signal and the second reference signal in Figure 2 are used to determine the first channel information and the second channel information, respectively, and the first channel information and the second channel information are identical. In other words, the first reference signal and the second reference signal can be used to determine the same channel information. Because the first channel information and the second channel information are identical, the first device and the second device each obtain each other's channel information, thereby facilitating the implementation of physical layer security solutions based on channel information.

[0047] In some embodiments, the first channel information may indicate a channel state between the first device and the second device. Therefore, in this embodiment, the first channel information may also be replaced with the first channel state information.

[0048] In some embodiments, the first channel information may be part or all of the information in the channel matrix between the first device and the second device; alternatively, the first channel information may be information determined based on the channel matrix. For example, the channel matrix between the first device and the second device may be represented by amplitude and phase, and the first channel information may be the amplitude information of the channel matrix, or the phase information of the channel matrix, or information determined based on the amplitude information or phase information of the channel matrix. For example, the phase of the channel matrix may be quantized to obtain the first channel information. For a more detailed description of the first channel information, please refer to Examples 1 and 2 below.

[0049] In some embodiments, the second channel information may indicate a channel state between the first device and the second device. Therefore, in this embodiment, the second channel information may also be replaced with second channel state information.

[0050] In some embodiments, the second channel information may be part or all of the information in the channel matrix between the first device and the second device; alternatively, the second channel information may be information determined based on the channel matrix. For example, the channel matrix between the first device and the second device may be represented by amplitude and phase, and the second channel information may be the amplitude information of the channel matrix, or the phase information of the channel matrix, or information determined based on the amplitude information or phase information of the channel matrix. For example, the phase of the channel matrix may be quantized to obtain the second channel information. For a more detailed description of the second channel information, please refer to Examples 1 and 2 below.

[0051] In some embodiments, the first reference signal and the second reference signal in FIG2 can be understood as reference signals for the first link. The first link mentioned here can be a communication link with two transmission directions. The two transmission directions can include a first transmission direction from the first device to the second device, and a second transmission direction from the second device to the first device. Therefore, in some embodiments, the first link can be referred to as a bidirectional link.

[0052] Furthermore, in some embodiments, a reference signal set including the first reference signal and the second reference signal may be referred to as a bidirectional reference signal. The bidirectional reference signal may be a newly introduced reference signal (e.g., a new reference signal introduced by a standard to support a physical layer security solution), or may be a pair of reference signals formed by associating existing reference signals with different transmission directions.

[0053] In some embodiments, the spatial information of the first reference signal and the spatial information of the second reference signal are correlated. The spatial information of the signal may include one or more of the following: the antenna pattern corresponding to the transmitted signal, and the antenna pattern corresponding to the received signal. The antenna pattern corresponding to the transmitted signal may, for example, include one or more of the following information: the amplitude of the transmitting antenna, the amplitude adjustment amount of the transmitting antenna, the phase of the transmitting antenna, and the phase adjustment amount of the transmitting antenna. Different antenna patterns result in different energy distributions of the transmitted signal in space. Generally, the energy distribution of a signal in space is referred to as a beam. Therefore, the antenna pattern corresponding to the transmitted signal can also be expressed by the signal's transmit beam. The antenna pattern corresponding to the received signal may, for example, include one or more of the following information: the amplitude of the receiving antenna, the amplitude adjustment amount of the receiving antenna, the phase of the receiving antenna, and the phase adjustment amount of the receiving antenna. Different antenna patterns result in different received signal energies in different directions in space. Therefore, the antenna pattern corresponding to the received signal can also be expressed by the signal's receive beam.

[0054] In some embodiments, the spatial information of the first reference signal may include transmission configuration indicator (TCI) information of the first reference signal, such as a TCI index. In some embodiments, the spatial information of the second reference signal may include TCI information of the second reference signal, such as a TCI index.

[0055] In some embodiments, the association between the spatial information of the first reference signal and the spatial information of the second reference signal may include: the spatial information of the first reference signal is associated with the second reference signal. For example, the configuration information of the first reference signal may include spatial information, and the spatial information is associated with or points to the second reference signal. As a specific example, the configuration information of the first reference signal includes a first TCI index, and the first TCI index is associated with the second reference signal.

[0056] In some embodiments, the association between the spatial information of the first reference signal and the spatial information of the second reference signal may include: the spatial information of the second reference signal is associated with the first reference signal. For example, the spatial information may be configured in the configuration information of the second reference signal, and the spatial information is associated with or points to the first reference signal. As a specific example, the configuration information of the second reference signal includes a second TCI index, and the second TCI index is associated with the first reference signal.

[0057] As an example, the spatial information of the first reference signal and the spatial information of the second reference signal may be associated with one or more of the following: the receiving beam of the first reference signal is the same as the transmitting beam of the second reference signal, the transmitting beam of the first reference signal is the same as the receiving beam of the second reference signal, and the TCI information of the first reference signal is the same as the TCI information of the second reference signal.

[0058] In some embodiments, the frequency domain information (such as the frequency domain position) of the first reference signal and the frequency domain information (such as the frequency domain position) of the second reference signal are associated. For example, the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

[0059] In some embodiments, the spatial information and frequency domain information of the first reference signal and the spatial information and frequency domain information of the second reference signal may be associated with each other. For example, the spatial information of the first reference signal and the spatial information of the second reference signal are the same, and the frequency domain information of the first reference signal and the frequency domain information of the second reference signal are also the same.

[0060] In some embodiments, in addition to the spatial information (or frequency domain information) of the first reference signal and the spatial information (or frequency domain information) of the second reference signal, the first reference signal and the second reference signal may also have other associations. For example, information such as the transmit power and period of the first reference signal and one or more of the transmit power and period of the second reference signal may also have certain associations.

[0061] In some embodiments, both the first reference signal and the second reference signal may be used to generate user-specific information (or user-specific parameters). The user-specific information may refer to a signal specific to the first device and the second device. The signal specific to the first device and the second device may be, for example, a signal that cannot be interpreted by other devices except the first device and the second device.

[0062] In some embodiments, the user-specific information can be used to scramble or encrypt signals between the first device and the second device. Therefore, in some embodiments, the user-specific information can be replaced with encryption information. For example, the user-specific information can be a key.

[0063] In some embodiments, the user-specific information may be a target sequence. For example, the target sequence may include one or more of the following sequences: a reference signal sequence, a base sequence for generating a reference signal sequence, and a scrambling code sequence (which may be used to scramble a physical layer data channel and / or a physical layer control channel). As an example, the target sequence may be a demodulation reference signal (DMRS) sequence, a CSI-RS sequence, etc.

[0064] In some embodiments, the first device may generate first channel information based on the first reference signal, and then generate the user-specific information based on the first channel information. There are various ways in which the first device may generate the user-specific information based on the first channel information, which will be described in detail later in conjunction with various embodiments and are not described in detail here.

[0065] In some embodiments, the second device may generate second channel information based on the second reference signal, and then generate user-specific information based on the second channel information. There are various ways in which the second device may generate user-specific information based on the second channel information, which will be described in detail later in conjunction with various embodiments and are not described in detail here.

[0066] In some embodiments, before step S210, the first device may first receive configuration information for the first reference signal. For example, the first device may receive the configuration information for the first reference signal from the second device. For example, the first device may receive the configuration information for the first reference signal from the second device via a PDSCH. In another example, the first device may receive the configuration information for the first reference signal from the second device via higher-layer signaling (e.g., RRC signaling).

[0067] In some embodiments, before step S220, the first device may first receive configuration information for the second reference signal. For example, the first device may receive configuration information for the second reference signal from the second device. For example, the first device may receive configuration information for the second reference signal from the second device via PDSCH. In another example, the first device may receive configuration information for the second reference signal from the second device via higher-layer signaling (e.g., RRC signaling).

[0068] In some embodiments, the configuration information of the first reference signal and the configuration information of the second reference signal are both configuration information for the first link. The first link mentioned here is a communication link with two transmission directions. The two transmission directions may include a first transmission direction from the first device to the second device, and a second transmission direction from the second device to the first device. In some embodiments, the first link may also be referred to as a bidirectional link.

[0069] In some embodiments, the configuration information of the first reference signal may include one or more of the following information of the first reference signal: time domain information (such as time domain position), frequency domain information (such as frequency domain position), spatial information, power information, and port mapping method.

[0070] In some embodiments, the time domain information of the first reference signal may include one or more of the following information of the first reference signal: period, offset, and symbol position within a time slot.

[0071] In some embodiments, the frequency domain information of the first reference signal may include one or more of the following information of the first reference signal: a starting resource block (RB), a transmission bandwidth, and frequency hopping information.

[0072] In some embodiments, the spatial information of the first reference signal may include a TCI index of the first reference signal.

[0073] In some embodiments, the power information of the first reference signal may include a power offset value of the first reference signal.

[0074] In some embodiments, the port mapping manner of the first reference signal may be code division multiplexing (CDM) or frequency division multiplexing (FDM).

[0075] The following text will take the first reference signal being CSI-RS as an example to illustrate the configuration parameters of the first reference signal in more detail. For details, please refer to Example 3.1 below.

[0076] In some embodiments, the configuration information of the second reference signal may include one or more of the following information: time domain information (such as time domain location), frequency domain information (such as frequency domain location), spatial information, power information, sequence information, and cluster index.

[0077] In some embodiments, the time domain information of the second reference signal may include one or more of the following information of the second reference signal: a period, an offset, and a symbol position within a time slot.

[0078] In some embodiments, the frequency domain information of the second reference signal may include one or more of the following information of the second reference signal: a starting RB, a transmission bandwidth, and frequency hopping information.

[0079] In some embodiments, the spatial information of the second reference signal may include a TCI index of the second reference signal.

[0080] In some embodiments, the power information of the second reference signal may include a power offset value of the second reference signal.

[0081] In some embodiments, the sequence information of the second reference signal may include a cyclic shift value of the second reference signal.

[0082] The configuration parameters of the second reference signal will be described in more detail below by taking the second reference signal being the SRS as an example. For details, please refer to Example 3.2 below.

[0083] As is well known, communication devices in communication systems often use reference signals to measure channel information of communication links. For example, before sending data, the transmitter on either side of the communication uses reference signals to obtain channel information. The transmitter obtains channel information primarily to configure an appropriate data transmission mode and / or transmission resources. For example, the transmitter can select an appropriate modulation and coding mode and transmission resource block based on the channel information. For data transmission in a multi-antenna mode, the transmitter can select an appropriate precoding matrix based on the channel information, thereby improving data transmission reliability, network coverage, or transmission efficiency. In related technologies, for data transmission in one transmission direction, only a reference signal is typically configured and channel measurement is performed for that transmission direction. For example, for downlink transmission, only a downlink reference signal is required. The terminal device can measure downlink channel information based on the downlink reference signal and feed this downlink channel information back to the network device for downlink scheduling. For uplink transmission, only an uplink reference signal is required. The network device can measure uplink channel information based on the uplink reference signal and use this uplink channel information for uplink scheduling. That is, in the related art, data transmission in different transmission directions is performed independently, so the channel measurement and reference signal configuration in different transmission directions are also independent of each other.

[0084] As mentioned above, the first reference signal and the second reference signal provided in the embodiments of the present application are a pair of reference signals from reference signals in different transmission directions, each of which has the same channel information. To obtain such a pair of reference signals, the reference signals from reference signals in different transmission directions that can be used to determine the same channel information can be linked together in some manner. There are various ways to link reference signals from different transmission directions, two of which are described below.

[0085] Association method 1: unified configuration of the first reference signal and the second reference signal

[0086] In some embodiments, the first reference signal and the second reference signal can be configured uniformly. Unified configuration of the first reference signal and the second reference signal can be understood as: the configuration process of the first reference signal and the configuration process of the second reference signal are not independent configuration processes, but rather belong to the same configuration process; or, the configuration information of the first reference signal and the configuration information of the second reference signal are not independent configuration information, but rather are part of the overall configuration information.

[0087] In some embodiments, some or all of the configuration parameters of the first reference signal and the second reference signal are shared parameters (or common references) of the first reference signal and the second reference signal. For example, configuration parameters with the same values ​​for the first reference signal and the second reference signal can be configured as shared parameters. Since shared parameters only need to be configured once, the complexity of the configuration can be reduced. As a specific example, one or more of the following parameters of the first reference signal and the second reference signal can be configured as shared parameters: frequency domain information (such as frequency domain position), and spatial information. Furthermore, in some embodiments, in addition to shared parameters, the first reference signal and the second reference signal can also be configured with their own dedicated parameters. For example, the time domain information corresponding to the first reference signal (such as the occupied time domain resources) and the time domain information corresponding to the second reference signal (such as the occupied time domain resources) can be configured as their own dedicated parameters. For example, the time domain resources occupied by the first reference signal and the time domain resources occupied by the second reference signal can be different.

[0088] In some embodiments, some configuration parameters of the second reference signal are determined based on the configuration information of the first reference signal. For example, the configuration information of the first reference signal includes a first configuration parameter, and the first configuration parameter of the second reference signal can be determined based on the first configuration parameter in the configuration information of the first reference signal. This embodiment does not require the configuration information of the second reference signal to include one or more configuration parameters, thereby reducing the configuration complexity of the second reference signal. The some configuration parameters mentioned in this embodiment may include configuration parameters whose values ​​in the first reference signal and the second reference signal correspond (e.g., have the same value). For example, the some configuration parameters mentioned in this embodiment may include one or more of the following configuration parameters: the frequency domain position of the reference signal, and spatial information of the reference signal (e.g., a TCI index). As a specific example, the first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal. The configuration information of the downlink reference signal includes the frequency domain position, while the configuration information of the uplink reference signal does not include the frequency domain position. During actual transmission, the frequency domain position of the uplink reference signal can be determined based on the frequency domain position in the configuration information of the downlink reference signal. For example, the frequency domain position of the uplink reference signal can be the same as the frequency domain position of the downlink reference signal. As another specific example, the first reference signal and the second reference signal are a downlink reference signal and an uplink reference signal, respectively. The configuration information of the downlink reference signal includes a TCI index, while the configuration information of the uplink reference signal does not include a TCI index. During actual transmission, the transmission method of the uplink reference signal may be determined based on the TCI index in the configuration information of the downlink reference signal.

[0089] In some embodiments, some configuration parameters of the first reference signal are determined based on the configuration information of the second reference signal. For example, the configuration information of the second reference signal includes a first configuration parameter, and the first configuration parameter of the first reference signal can be determined based on the first configuration parameter in the configuration information of the second reference signal. This embodiment does not require the configuration information of the first reference signal to include one or more configuration parameters, thereby reducing the configuration complexity of the first reference signal. The some configuration parameters mentioned in this embodiment may include configuration parameters whose values ​​in the first reference signal and the second reference signal correspond (e.g., have the same value). For example, the some configuration parameters mentioned in this embodiment may include one or more of the following configuration parameters: the frequency domain position of the reference signal, and spatial information of the reference signal (e.g., a TCI index). As a specific example, the first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal. The configuration information of the uplink reference signal includes a frequency domain position, while the configuration information of the downlink reference signal does not include a frequency domain position. During actual transmission, the frequency domain position of the downlink reference signal can be determined based on the frequency domain position in the configuration information of the uplink reference signal. For example, the frequency domain position of the downlink reference signal can be the same as the frequency domain position of the uplink reference signal. As another specific example, the first reference signal and the second reference signal are a downlink reference signal and an uplink reference signal, respectively. The configuration information of the uplink reference signal includes a TCI index, while the configuration information of the downlink reference signal does not include a TCI index. During actual transmission, the transmission method of the downlink reference signal may be determined based on the TCI index in the configuration information of the uplink reference signal.

[0090] It should be noted that the above description uses the example of a first reference signal and a second reference signal being uniformly configured as reference signals. However, even if the configuration processes of the first reference signal and the second reference signal are independent of each other, some or all of the above-described solutions may be considered. For example, in some embodiments, even if the configuration processes of the first reference signal and the second reference signal are independent of each other, some or all of the configuration parameters of the first reference signal and the second reference signal may be configured as shared parameters. For another example, in some embodiments, even if the configuration processes of the first reference signal and the second reference signal are independent of each other, some of the configuration parameters of the second reference signal may be determined based on the configuration information of the first reference signal; alternatively, some of the configuration parameters of the first reference signal may be determined based on the configuration information of the second reference signal.

[0091] Correlation method 2: Configure the first reference signal and the second reference signal independently and pair them

[0092] In some embodiments, the first reference signal and the second reference signal may be independently configured reference signals. That is, the configuration process of the first reference signal and the configuration process of the second reference signal may be two independent configuration processes. For example, if the first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal, when uplink transmission is required, an uplink reference signal may be configured for the first device, and when downlink transmission is required, a downlink reference signal may be configured for the first device.

[0093] In some embodiments, the first reference signal and the second reference signal may be a pair of reference signals having a paired relationship. The "paired relationship" mentioned herein may also be understood or replaced by "associated relationship" or "corresponding relationship."

[0094] Furthermore, in some embodiments, the configuration information of the first reference signal may include first information for indicating the pairing relationship. The first information may indicate the pairing relationship in a variety of ways. For example, the first information may directly indicate the identifier of the second reference signal. In another example, the first information may be a first index, and the configuration information of the second reference signal may include a second index corresponding to the first index (e.g., the second index has the same value as the first index). In other words, the first index may indirectly indicate the existence of a pairing relationship between the first reference signal and the second reference signal based on the corresponding relationship between the first index and the second index.

[0095] Similarly, in some embodiments, the configuration information of the second reference signal may include second information for indicating the pairing relationship. The second information may indicate the pairing relationship in a variety of ways. For example, the second information may directly indicate the identifier of the first reference signal. In another example, the second information may be a second index, and the configuration information of the first reference signal may include a first index corresponding to the second index (e.g., the first index and the second index have the same value). In other words, the second index may indirectly indicate the existence of a pairing relationship between the second reference signal and the first reference signal based on the corresponding relationship between the first index and the second index.

[0096] In the above embodiments, the first index and the second index may both be indexes specifically set to associate the first reference signal with the second reference signal. Therefore, in some embodiments, the first index and the second index may be referred to as reference signal association indexes. For example, in which the first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal, the first index and the second index may be referred to as uplink and downlink reference signal association indexes.

[0097] The first information and / or second information mentioned above can both be understood as information indicating the pairing relationship of reference signals. It should be noted that the above description uses the example of the indication information being part of the reference signal configuration information, but the embodiments of the present application are not limited thereto. In other embodiments, the indication information may also be information other than the reference signal configuration information. For example, in some embodiments, the indication information may be carried in a separate message or signaling to indicate that the first reference signal and the second reference signal are paired.

[0098] In addition to pairing based on the aforementioned indication information, the first reference signal and the second reference signal can also be paired based on other methods. For example, the first reference signal and the second reference signal can be paired based on conditions. Conditional pairing can be understood as follows: if the first reference signal and the second reference signal meet one or more conditions, the first reference signal and the second reference signal can be determined as a pair of reference signals with a pairing relationship; if the first reference signal and the second reference signal do not meet the one or more conditions, the first reference signal and the second reference signal are not paired. For ease of description, the one or more conditions will be referred to as the first condition below, and the first condition may also be referred to as the pairing condition.

[0099] In some embodiments, the first condition may be determined based on protocol predefined information, preconfiguration information, or configuration information of the network device.

[0100] The embodiment of the present application does not limit the specific setting method of the first condition, as long as the paired first reference signal and the second reference signal can determine the same channel information.

[0101] In some embodiments, the first condition may be associated with one or more of the following information: spatial information of the first reference signal and spatial information of the second reference signal; and frequency domain information (such as frequency domain position) of the first reference signal and frequency domain information (such as frequency domain position) of the second reference signal.

[0102] In some embodiments, the first condition may include one or more of the following: the spatial information of the first reference signal and the spatial information of the second reference signal are identical; and the frequency domain position of the first reference signal and the frequency domain position of the second reference signal are identical. Furthermore, in some embodiments, the spatial information of the first reference signal and the spatial information of the second reference signal being identical may include one or more of the following: the TCI index of the first reference signal and the TCI index of the second reference signal are identical; the transmit beam of the first reference signal and the receive beam of the second reference signal are identical; and the receive beam of the first reference signal and the transmit beam of the second reference signal are identical.

[0103] It should be noted that the above description uses the example of independently configured first and second reference signals. However, even if the first and second reference signals are uniformly configured reference signals, some or all of the above-described solutions may be considered. For example, in some embodiments, even if the first and second reference signals are uniformly configured reference signals, indication information (such as the first information and / or second information described above) indicating that the first and second reference signals are paired may be configured. For another example, in some embodiments, even if the first and second reference signals are uniformly configured reference signals, they may be paired based on the first condition described above.

[0104] The configuration of the first reference signal and the second reference signal is described in detail above. After the first and second reference signals are configured, the first device can receive the first reference signal and generate user-specific information based on the first reference signal. Similarly, the second device can receive the second reference signal and generate user-specific information based on the second reference signal. In some embodiments, the user-specific information generated based on the first reference signal is the same as the user-specific information generated based on the second reference signal.

[0105] After obtaining the user-specific information, the first device and / or the second device may execute a physical layer security scheme based on the user-specific information. For example, the first device and / or the second device may encrypt signals transmitted between the first device and the second device based on the user-specific information.

[0106] In order to ensure that the first device and the second device use the user-specific information in the same way, in some embodiments, the effective time of the user-specific information can be specified (or, it can be replaced by the effective time of the encryption operation or the enabling time of the physical layer security scheme).

[0107] In some embodiments, before the first device and the second device use the user-specific information, the validity period of the user-specific information may be negotiated first.

[0108] In some embodiments, the first device and the second device can determine the effective time of the user-specific information based on the same rules to reduce the signaling overhead caused by negotiating the effective time and improve communication efficiency. The rules can be determined based on protocol predefined information, preconfigured information, and network device configuration information.

[0109] In some embodiments, the effective time of the user-specific information can be determined based on a first reference time. There are many ways to determine the first reference time, and several specific examples are given below.

[0110] For example, the first reference time can be determined based on the transmission time of the first reference signal and / or the transmission time of the second reference signal. As a possible implementation, the first reference time can be determined based on the transmission time of the target reference signal. The target reference signal mentioned here can be the reference signal with a later transmission time of the first reference signal and the second reference signal, or it can be the reference signal with an earlier transmission time of the first reference signal and the second reference signal. If the transmission time of the first reference signal and the second reference signal is the same, the target reference signal can be the first reference signal or the second reference signal. As an example, the first reference time can be set to be equal to the transmission time of the target reference signal.

[0111] For another example, the first reference time can be determined based on the transmission time of the first feedback information. The first feedback information can be used to indicate that the first device has successfully received the reference signal configuration information. The reference signal configuration information mentioned in this example may include the configuration information of the first reference signal and / or the configuration information of the second reference signal mentioned above. Taking the first reference signal and the second reference signal as reference signals with uniform configuration as an example, the reference signal configuration information may include the configuration information of the first reference signal and the configuration information of the second reference signal, and the first feedback information may be feedback information for the reference signal configuration information (such as acknowledgment (ACK) or negative acknowledgment (NACK)). As an example, the first reference time can be set to be equal to the transmission time of the first feedback information.

[0112] In some embodiments, the effective time of the user-specific information can be determined based on a first reference time and a preset time interval (T time units). For example, the effective time of the user-specific information can be equal to or later than the first time, where the first time can be determined based on T (T is a positive integer greater than or equal to 1) time units after the first reference time.

[0113] The T time units mentioned above may be determined based on one or more factors such as actual communication conditions and the processing capabilities of the first device and / or the second device.

[0114] Taking the first reference time as the transmission time of the first reference signal as an example, after receiving the first reference signal, the first device needs to determine the user-specific information based on the first reference signal. The T time units can be set to be greater than or equal to the time required for the first device to determine the user-specific information from the time the first device receives the first reference signal. The T time units can be related to the processing capability of the first device.

[0115] Taking the first reference time as the transmission time of the second reference signal as an example, after receiving the second reference signal, the second device needs to determine the user-specific information based on the second reference signal. The T time units can be set to be greater than or equal to the time required for the second device to determine the user-specific information from the time it receives the second reference signal. The T time units can be related to the processing capability of the second device.

[0116] Taking the first reference time as the transmission time of the first feedback information (the first feedback information is used to indicate that the first device has successfully received the configuration information of the first reference signal and / or the second reference signal), after sending the first feedback information, the first device needs to first receive the first reference signal and then determine the user-specific information based on the first reference signal. The T time units can be set to be greater than or equal to the sum of the following two times: the time from the first device sending the first feedback information to receiving the first reference signal, and the time required for the first device to determine the user-specific information from receiving the first reference signal. The T time units may be related to the processing capability of the first device.

[0117] For ease of understanding, several more specific examples are given below, taking the first device as a terminal device and the second device as a network device as an example.

[0118] For example, after T time units from the transmission time of the target reference signal (the reference signal with a later transmission time between the first reference signal and the second reference signal), the terminal device uses user-specific information generated based on the first channel information to encrypt or scramble the signal between the terminal device and the network device.

[0119] For another example, the network device encrypts or scrambles the signal between the terminal device and the network device using the user-specific information generated based on the second channel information after T time units from the transmission time of the target reference signal.

[0120] For another example, after receiving the uniformly configured reference signal configuration information (including the configuration information of the first reference signal and the configuration information of the second reference signal) sent by the network device, the terminal device sends the first feedback information to the network device. If the first feedback information sent by the terminal device is ACK, the terminal device uses the user-specific information generated based on the first channel information to encrypt or scramble the signal between the terminal device and the network device after T time units from the transmission time of the target reference signal. Correspondingly, if the first feedback information sent by the terminal device is ACK, the network device uses the user-specific information generated based on the second channel information to encrypt or scramble the signal between the terminal device and the network device after T time units from the transmission time of the target reference signal.

[0121] For another example, after receiving the uniformly configured reference signal configuration information (including the configuration information of the first reference signal and the configuration information of the second reference signal) sent by the network device, the terminal device sends the first feedback information to the network device. If the first feedback information sent by the terminal device is NACK, the terminal device does not generate user-specific information based on the first channel information, nor does it encrypt or scramble the signal between the terminal device and the network device based on the user-specific information. Correspondingly, if the first feedback information sent by the terminal device is NACK, the network device does not generate user-specific information based on the second channel information, nor does it encrypt or scramble the signal between the terminal device and the network device based on the user-specific information. In addition, in this example, the network device can send the above-mentioned uniformly configured reference signal configuration information again.

[0122] For another example, after receiving the uniformly configured reference signal configuration information (including the configuration information of the first reference signal and the configuration information of the second reference signal) sent by the network device, the terminal device sends the first feedback information to the network device. If the first feedback information sent by the terminal device is ACK, the terminal device uses the user-specific information generated based on the first channel information to encrypt or scramble the signal between the terminal device and the network device after T time units from the transmission time of the first feedback information. Correspondingly, if the first feedback information sent by the terminal device is ACK, the network device uses the user-specific information generated based on the second channel information to encrypt or scramble the signal between the terminal device and the network device after T time units from the transmission time of the first feedback information.

[0123] For another example, after receiving the uniformly configured reference signal configuration information (including the configuration information of the first reference signal and the configuration information of the second reference signal) sent by the network device, the terminal device sends the first feedback information to the network device. If the first feedback information sent by the terminal device is NACK, the terminal device does not generate user-specific information based on the first channel information, nor does it encrypt or scramble the signal between the terminal device and the network device based on the user-specific information. Correspondingly, if the feedback information sent by the terminal device is NACK, the network device does not generate user-specific information based on the second channel information, nor does it encrypt or scramble the signal between the terminal device and the network device based on the user-specific information. In addition, in this example, the network device can send the above-mentioned uniformly configured reference signal configuration information again.

[0124] It should be noted that the values ​​of T in the above different examples may be the same or different. For example, if the transmission time of the first feedback information is used as the reference time, the value of T may be the first value; if the transmission time of the target reference signal (the reference signal with the later transmission time between the first reference signal and the second reference signal) is used as the reference time, the value of T may be the second value, and the first value may be greater than the second value.

[0125] It should be noted that the signal transmission time mentioned above can be represented by one or more of the subframe, symbol, time slot, and sub-time slot in which the signal is located. The early or late signal transmission time can be determined based on one or more of the following: the start time of signal transmission and the end time of signal transmission.

[0126] For example, if the transmission start symbol of signal 1 (ie, the first symbol occupied by the transmission of signal 1) is earlier than the transmission start symbol of signal 2, the transmission time of signal 1 is earlier than the transmission time of signal 2.

[0127] For another example, if the transmission end symbol of signal 1 (ie, the last symbol occupied by the transmission of signal 1) is earlier than the transmission end symbol of signal 2, then the transmission time of signal 1 is earlier than the transmission time of signal 2.

[0128] For another example, the transmission start symbol of signal 1 can be compared with the transmission start symbol of signal 2. If the transmission start symbol of signal 1 is earlier than the transmission start symbol of signal 2, the transmission time of signal 1 is earlier than the transmission time of signal 2. If the transmission start symbol of signal 1 is the same as the transmission start symbol of signal 2, the transmission end symbol of signal 1 can be compared with the transmission end symbol of signal 2. If the transmission end symbol of signal 1 is earlier than the transmission end symbol of signal 2, the transmission time of signal 1 is earlier than the transmission time of signal 2; otherwise, the transmission time of signal 1 is later than the transmission time of signal 2.

[0129] It should be noted that the time units mentioned above can be represented by one of subframes, symbols, time slots, and sub-time slots. For example, T time units can refer to T subframes, T symbols, T time slots, or T sub-time slots.

[0130] As mentioned above, the user-specific information can be a target sequence, such as a reference signal sequence or a scrambling code sequence. The target sequence can be generated based on target channel information (the target channel information can refer to the first channel information or the second channel information mentioned above). For example, a target sequence initial seed can be first generated based on the target channel information, and then the target sequence can be generated based on the target sequence initial seed. The following describes in detail the method for generating the target sequence initial seed in conjunction with Examples 1 and 2.

[0131] Example 1: The target sequence initial seed is generated based on the target channel information

[0132] In some embodiments, the target sequence initial seed may be generated based on feature information (or characteristic information, attribute information) of the target channel information.

[0133] Optionally, the characteristic information of the target channel information may include part or all of the characteristics of the target channel information. For example, if the target channel information is vector information, the characteristic information of the target channel information may include characteristic information of the target channel information in a specific direction.

[0134] In some embodiments, the characteristic information of the target channel information includes but is not limited to at least one of the following: amplitude information of the target channel information, phase information of the target channel information, and mapping information (or projection information, quantization information) of the target channel information on a specific domain.

[0135] In some embodiments, the specific domain includes but is not limited to the Fourier transform (FT) domain, and in some specific embodiments may include the fast Fourier transform (FFT) domain and the discrete Fourier transform (DFT) domain.

[0136] Example 1-1: Generating the target sequence initial seed based on the amplitude information of the target channel information

[0137] In some embodiments, the aforementioned generating the target sequence initial seed according to the characteristic information of the target channel information may include: generating the target sequence initial seed according to the amplitude information of the channel information on N frequency domain units.

[0138] In some specific embodiments, the amplitude information of the channel information on N frequency domain units may be quantized to obtain N amplitude quantization values. Then, an initial seed of the target sequence may be generated based on at least one of the N amplitude quantization values.

[0139] It should be understood that the embodiment of the present application does not limit the quantization method of the amplitude information of the channel information on the N frequency domain units.

[0140] As an example, the amplitude information of the channel information on N frequency domain units may be binary quantized according to the first amplitude threshold to obtain N amplitude quantization values.

[0141] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0142] H(n)=A(n)ejθ(n) ,n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can be based on the first amplitude threshold A th1 Perform binary quantization on A(n). For example, if A(n) is greater than A th1 , quantize A(n) to A′(n)=1, otherwise, quantize A(n) to A′(n)=0.

[0143] As another example, the amplitude information of the channel information on N frequency domain units is rounded (eg, rounded up or rounded down) to obtain N amplitude quantization values.

[0144] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0145] H(n)=A(n)e jθ(n) , n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can quantize A(n) as or

[0146] As another example, the amplitude information of the channel information on N frequency domain units is modulo processed with the second amplitude threshold to obtain N amplitude quantization values.

[0147] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0148] H(n)=A(n)e jθ(n) ,n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can be based on the second amplitude threshold A th2 Perform modulo quantization on A(n), for example, quantize A(n) to A′(n)=A(n)mod A th2 .

[0149] Furthermore, in some embodiments, the first device (or the second device) may use one of the N amplitude quantization values ​​as the target sequence initial seed, or may generate the target sequence initial seed based on multiple amplitude quantization values. For example, the target sequence initial seed may be obtained by processing the multiple amplitude quantization values, and the processing may include but is not limited to accumulation, multiplication, Fourier transform, modulo, etc.

[0150] As an example, the first device (or the second device) may generate the target sequence initial seed according to the following formula: Wherein, C represents the initial seed of the target sequence, A′(i) represents the amplitude quantization value of the channel information on the i-th frequency domain unit among N frequency domain units, Q is an integer, and A′(n) represents the amplitude quantization value of the channel information on the n-th frequency domain unit among N frequency domain units.

[0151] Example 1-2: Generating the target sequence initial seed based on the phase information of the target channel information

[0152] In some embodiments, generating a target sequence initial seed according to characteristic information of the target channel information includes:

[0153] An initial seed of a target sequence is generated according to phase information of channel information on N frequency domain units.

[0154] In some specific embodiments, the phase information of the channel information on N frequency domain units may be quantized to obtain N phase quantization values, and the target sequence initial seed may be generated based on at least one phase quantization value of the N phase quantization values.

[0155] It should be understood that the present application is not limited to the quantization method of the phase information of the channel information on N frequency domain units.

[0156] As an example, according to the first phase threshold, the phase information of the channel information on N frequency domain units is binary quantized to obtain N phase quantization values.

[0157] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0158] H(n)=A(n)e jθ(n) ,n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can be based on the first phase threshold θ th1 Binary quantize θ(n), for example, if θ(n) is greater than θ th1, quantize θ(n) to θ′(n)=1, otherwise, quantize θ(n) to θ′(n)=0.

[0159] As another example, the phase information of the channel information on N frequency domain units is rounded (eg, rounded up or rounded down) to obtain N phase quantization values.

[0160] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0161] H(n)=A(n)e jθ(n) , n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can quantize θ(n) as or

[0162] As another example, the phase information of the channel information on N frequency domain units is modulo processed with the second phase threshold to obtain N phase quantization values.

[0163] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0164] H(n)=A(n)e jθ(n) ,n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can be based on the second phase threshold θ th2 Perform modulo quantization on A(n), for example, quantize θ(n) to θ′(n)=θ(n)modθ th2 .

[0165] In some embodiments, the first device (or the second device) may use one of the N phase quantization values ​​as the target sequence initial seed, or may generate the target sequence initial seed based on multiple phase quantization values. For example, the target sequence initial seed may be obtained by processing the multiple phase quantization values. The processing may include, but is not limited to, accumulation, multiplication, Fourier transform, modulo, etc.

[0166] As an example, the first device (or the second device) generates the target sequence initial seed according to the following formula: Wherein, C represents the initial seed of the target sequence, θ′(i) represents the phase quantization value of the channel information on the i-th frequency domain unit in N frequency domain units, P is an integer, and θ′(n) represents the phase quantization value of the channel information on the n-th frequency domain unit in N frequency domain units.

[0167] Example 1-3: Generating the target sequence initial seed based on the mapping information of the target channel information in a specific domain

[0168] The following description is given by taking the FFT domain as an example, but the present application is not limited thereto.

[0169] In some embodiments, the target sequence initial seed may be generated based on mapping information of channel information on N frequency domain units in the Fourier transform domain.

[0170] In some embodiments, the codebook may be considered as an FFT domain, and mapping information of the target channel information in the FFT domain may be represented by the codebook mapped by the target channel information in the FFT domain.

[0171] In some specific embodiments, the first device (or the second device) may determine, in the candidate codebook set, a target codebook corresponding to the channel information on each frequency domain unit based on the channel information on each frequency domain unit in the N frequency domain units, wherein the index information of the target codebook corresponding to the channel information on each frequency domain unit is used to represent the mapping information of the channel information on each frequency domain unit in the Fourier transform domain.

[0172] Furthermore, an initial seed of the target sequence is generated according to index information of a target codebook corresponding to channel information on at least one frequency domain unit among the N frequency domain units.

[0173] It should be understood that in the embodiments of the present application, at least one may refer to one or more, wherein a plurality may refer to two or more.

[0174] It should be understood that the embodiments of the present application do not limit the specific method of determining the target codebook corresponding to the channel information on each frequency domain unit in the candidate codebook set. In some embodiments, the target codebook can be determined based on the size of the inner product between the channel information on the frequency domain unit and the candidate codebooks in the candidate codebook set. In a specific embodiment, the codebook with the largest inner product with the channel information on the frequency domain unit in the candidate codebook set is determined as the target codebook. In another specific embodiment, the codebook with the smallest inner product with the channel information on the frequency domain unit in the candidate codebook set can also be determined as the target codebook.

[0175] For example, if the channel information on the nth frequency domain unit in the channel information on the N frequency domain units is H a*b (n) is expressed as:

[0176] Ha*b (n) = A(n)e jθ(n) ,n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, θ(n) represents the phase information of the channel information on the nth frequency domain unit, a represents the transmitting antenna, and b represents the receiving antenna. Further, the first device (or the second device) can determine the adaptation H in the candidate codebook set. a*b (n) target codebook, wherein in the candidate codebook set, the target codebook and H a*b The inner product of (n) is the largest.

[0177] For example, as shown in Table 1, the candidate codebook set may include a candidate codebook set consisting of 256 codebooks. The indexes i1 and i2 (corresponding to the above index information) corresponding to each codebook can be used to represent the codebook. The target codebook corresponding to the channel information on the nth frequency domain unit among N frequency domain units can be identified by i1(n) and i2(n). The indexes i1(n) and i2(n) corresponding to the codebook can then be used as the mapping information of the channel information on the nth frequency domain unit in the FFT domain.

[0178] Table 1

[0179]

[0180] Among them, the specific value of the codebook can be determined according to the index i1, i2 of the codebook, combined with the mapping relationship in Table 1. Specifically, first, according to the value of the index i1, i2, combined with the mapping relationship in Table 1, the specific value of the codebook can be determined. For example, if i1 is 0-15 and i2 is 0, then m is i1 and n is 0. Furthermore, the formula in the last row of Table 1 is used to determine The specific value of .

[0181] In some embodiments, generating an initial seed of a target sequence according to index information of a target codebook corresponding to channel information on at least one frequency domain unit among the N frequency domain units includes:

[0182] Generate the initial seed of the target sequence according to the following formula:

[0183] Wherein, C represents the initial seed of the target sequence, i1(l) and i2(l) represent the index information of the target codebook corresponding to the channel information on the i-th frequency domain unit among N frequency domain units, and X represents the number of at least one frequency domain unit minus 1, where X is an integer.

[0184] It should be understood that the above embodiments 1-1 to 1-3 can be implemented separately or in combination. For example, in some embodiments, the first device (or the second device) can generate the target sequence initial seed based on the amplitude information and phase information of the target channel information, or the target sequence initial seed can be generated based on the amplitude information of the target channel and the mapping information in a specific domain, or the target sequence initial seed can be generated based on the amplitude information, phase information and mapping information in a specific domain of the target channel. As an example, the target sequence initial seed is generated according to the following formula:

[0185]

[0186] Wherein, C represents the initial seed of the target sequence, i1(l) and i2(l) represent the index information of the target codebook corresponding to the channel information on the i-th frequency domain unit in N frequency domain units, A′(n) represents the amplitude quantization value of the channel information on the n-th frequency domain unit in N frequency domain units, θ′(i) represents the phase quantization value of the channel information on the i-th frequency domain unit in N frequency domain units, X represents the number of at least one frequency domain unit minus 1, X is an integer, Q is an integer, and P is an integer.

[0187] It should be understood that in an embodiment of the present application, the target channel information may include channel information on N frequency domain units, or may also include channel information on M other domain units (such as the spatial domain), and the present application does not limit this.

[0188] Example 2: Generating the target sequence initial seed based on target channel information and other parameters

[0189] In some embodiments, the first device (or the second device) may generate a target sequence initial seed according to the target channel information and a first parameter, where the first parameter includes at least one of a time parameter, a configuration parameter, and a predefined parameter.

[0190] In some embodiments, the first device (or the second device) first generates a first sequence initial seed according to the target channel information, and further generates a target sequence initial seed according to the first sequence initial seed and the first parameter.

[0191] In some specific embodiments, the first sequence initial seed and the first parameter may be processed by accumulation, multiplication, modulo, or Fourier transformation to generate the target sequence initial seed.

[0192] In some other embodiments, the first device (or the second device) first generates a second sequence initial seed based on the first parameter, and further generates a target sequence initial seed based on the second sequence initial seed and the target channel information. As an example, the target sequence initial seed is generated based on feature information of the second sequence initial seed and the target channel information.

[0193] It should be understood that in this embodiment 2, the specific implementation of generating the first sequence initial seed according to the target channel information refers to the relevant implementation of generating the target sequence initial seed according to the target channel information in embodiment 1, and for the sake of brevity, it is not repeated here.

[0194] For example, a first sequence of initial seeds is generated according to characteristic information of the target channel information.

[0195] As an example, the first sequence of initial seeds is generated according to at least one of amplitude information, phase information, and mapping information on a specific domain of the target channel information.

[0196] Example 2-1: Generating the target sequence initial seed based on target channel information and time parameters

[0197] In some embodiments, the first device (or the second device) first quantizes the channel information on N frequency domain units included in the target channel information, and further generates an initial seed of the target sequence based on the time parameter and the quantized channel information.

[0198] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0199] H(n)=A(n)e jθ(n) ,n=0,1,2…N-1, wherein A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can quantize H(n) to obtain H′(n). For the specific quantization method, refer to the specific implementation of Example 1. Further, the first device (or the second device) processes H′(n), n=0,1,…N to obtain a first sequence initial seed M, for example, M=f(H′(n)), f is a function, which can be an accumulation function, a multiplication function, or a Fourier transform function, etc., and this application does not limit this.

[0200] Furthermore, the first device (or the second device) obtains an initial seed of the target sequence according to the formula C = g(M, T), where g is a sequence generation function, such as accumulation, multiplication, modulo, or Fourier transform. T is a time parameter, such as the symbol, time slot, subframe, or frame index of the target sequence.

[0201] As an example, the target sequence initial seed C can be generated according to the following formula:

[0202]

[0203] Where l is the number of orthogonal frequency-division multiplexing (OFDM) symbols, is the number of symbols in a time slot, It is the timeslot number within the radio frame.

[0204] In this embodiment 2-1, when generating the initial seed of the target sequence, a time parameter is introduced to increase the time-varying property of the target sequence, making it difficult to be tracked and deciphered, and the interference is randomized, thereby reducing security risks.

[0205] Example 2-2: Generating the target sequence initial seed based on target channel information, time parameters, and configuration parameters

[0206] In some embodiments, the first device (or the second device) first quantizes the channel information on N frequency domain units included in the target channel information, and further generates an initial seed of the target sequence based on the time parameter, configuration parameter and the quantized channel information.

[0207] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0208] H(n)=A(n)e jθ(n) ,n=0,1,2…N-1, wherein A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. Further, the first device (or the second device) can quantize H(n) to obtain H′(n). For the specific quantization method, refer to the specific implementation of Example 1. Further, the first device (or the second device) processes H′(n), n=0,1,…N to obtain a first sequence initial seed M, for example, M=f(H′(n)), f is a function, which can be an accumulation function, a multiplication function, or a Fourier transform function, etc., and this application does not limit this.

[0209] Furthermore, the first device (or the second device) obtains the target sequence initial seed according to the formula C = g(M, T, P), where g is a sequence generation function, such as accumulation, multiplication, modulo, or Fourier transform. T is a time parameter, such as the symbol, time slot, subframe, or frame index of the target sequence. P is a configuration parameter.

[0210] As an example, the target sequence initial seed C can be generated according to the following formula:

[0211]

[0212] Where l is the number of OFDM symbols, is the number of symbols in a time slot, is the timeslot number within the radio frame, and P is a configuration parameter.

[0213] In Example 2-2, when generating the initial seed of the target sequence, a time parameter is introduced to increase the time-varying nature of the target sequence, making it less susceptible to tracking and deciphering. Interference is also randomized, reducing security risks. By introducing configuration parameters configured by network devices, network devices can control the allocation of sequence resources, facilitating interference coordination or elimination.

[0214] Example 2-3: Generating the target sequence initial seed based on target channel information, time parameters and predefined parameters

[0215] In some embodiments, the first device (or the second device) first quantizes the channel information on N frequency domain units included in the target channel information, and further generates an initial seed of the target sequence based on the time parameter, the predefined parameter and the quantized channel information.

[0216] For example, if the channel information H(n) on the nth frequency domain unit among the channel information on N frequency domain units is expressed as:

[0217] H(n)=A(n)e jθ(n) , n=0,1,2…N-1, where A(n) represents the amplitude information of the channel information on the nth frequency domain unit, and θ(n) represents the phase information of the channel information on the nth frequency domain unit. The first device (or the second device) can quantize H(n) to obtain H′(n). For the specific quantization method, refer to the specific implementation of Example 1. Furthermore, the first device (or the second device) processes H′(n), n=0,1,…N to obtain a first sequence initial seed M, for example, M=f(H′(n)), where f is a function, which can be an accumulation function, a multiplication function, or a Fourier transform function, etc., and this application does not limit this.

[0218] Furthermore, the first device (or the second device) obtains an initial seed of the target sequence according to the formula C = g(M, T, Y), where g is a sequence generation function, such as accumulation, multiplication, modulo, or Fourier transform. T is a time parameter, such as the symbol, time slot, subframe, or frame index of the target sequence. Y is a predefined parameter.

[0219] As an example, the target sequence initial seed C can be generated according to the following formula:

[0220]

[0221] Where l is the number of OFDM symbols, is the number of symbols in a time slot, is the timeslot number within the radio frame, and Y is a predefined parameter.

[0222] As mentioned above, the first reference signal can be a CSI-RS, and the second reference signal can be an SRS. The following, in conjunction with Example 3, takes the first reference signal as a CSI-RS and the second reference signal as an SRS as examples to illustrate the configuration of the first reference signal and the second reference signal in more detail. It should be understood that the reference signal configuration parameters described in Example 3 can be combined with certain reference signal configuration parameters mentioned above. For example, the association index of the first reference signal and the second reference signal mentioned above can be added to the CSI-RS and SRS described in Example 3.

[0223] Example 3.1: The first reference signal is CSI-RS

[0224] The CSI-RS configuration information may include configuration information of multiple non-zero power (NZP) CSI-RS resource sets. That is, one or more NZP CSI-RS resource sets may be configured for the first device.

[0225] In some embodiments, the multiple NZP CSI-RS resource sets may be configured by higher-layer parameters. The higher-layer parameters may, for example, be radio resource control (RRC) parameters. The higher-layer parameters may include one or more of the following parameters: NZP CSI RS resource, CSI ResourceConfig, and NZP CSI RS ResourceSet.

[0226] In some embodiments, each of the one or more NZP CSI-RS resource sets may include K (K is a positive integer greater than or equal to 1) NZP CSI-RS resources (hereinafter referred to as CSI-RS resources).

[0227] In some embodiments, the configuration information of the CSI-RS resource may include one or more of the following configuration parameters:

[0228] -NZP CSI RS ResourceId: This parameter may be used to indicate the identifier of the CSI-RS resource.

[0229] -periodicityAndOffset: This parameter can be used to indicate the period and time slot offset of the periodic / semi-persistent CSI-RS. The CSI-RS resources configured by the first device can include one or more groups of CSI-RS resources. Furthermore, the CSI-RS resources within a group can be set to have the same period. In addition, the time slot offsets corresponding to different CSI-RS resources can be the same or different.

[0230] -resourceMapping: This parameter can be used to indicate one or more of the following information: the number of CSI-RS resource ports in a time slot, CDM type, OFDM symbol, and subcarrier occupancy.

[0231] -nrofPorts in resourceMapping, this parameter can be used to indicate the number of CSI-RS ports.

[0232] -density in resourceMapping, which indicates the CSI-RS frequency density per physical resource block (PRB) for each CSI-RS port, as well as the PRB offset for CSI-RS when the density is 1 / 2. For density 1 / 2, the even-odd PRB allocation indicated in the density is relative to the common resource block grid.

[0233] -CDM type in resourceMapping. This parameter can be used to indicate the CDM value and mode.

[0234] -powerControlOffset, this parameter may be used to indicate an assumed ratio of the energy per resource element (EPRE) of the physical downlink shared channel (PDSCH) to the EPRE of the NZP CSI-RS when the first device obtains CSI feedback. The value range of the assumed ratio may be set to [-8, 15] dB. In addition, the step size of the assumed ratio may be set to 1 dB. For the calculation of a channel quality indicator (CQI) based on a pair of CSI-RS resources, the powerControlOffset for each CSI-RS resource in the CSI-RS resource pair used for channel measurement is the assumed ratio of EPRE when the first device derives CSI feedback and adopts a value in the range of [-8, 15] dB (with a step size of 1 dB).

[0235] -powerControlOffsetSS, this parameter may be used to indicate the assumed ratio of the EPRE of the NZP CSI-RS to the EPRE of the synchronization signal and physical broadcast channel (SS / PBCH) block.

[0236] - Scrambling ID (identity): This parameter may be used to indicate the scrambling ID of the CSI-RS. The scrambling ID of the CSI-RS may be 10 bits long.

[0237] - The identifier of the bandwidth part (Bandwidth Part, BWP) in the CSI ResourceConfig. This parameter can be used to indicate the BWP where the CSI-RS is located.

[0238] -Repetition in NZP CSI RS resource set, this parameter is associated with the CSI-RS resource set. This parameter can be used to indicate whether the first device can assume that the CSI-RS resources in the NZP CSI-RS resource set use the same downlink spatial transmission filter for transmission, or assume that the CSI-RS resources in the NZP CSI-RS resource set do not use a transmission filter. A CSI-RS resource set can be associated with one or more reports. This parameter can be configured when the reportQuantity associated with the one or more reports is set to "cri reference signal receiving power (RSRP)", "cri signal to interference plus noise ratio (SNR)", or "none".

[0239] -qclInfoPeriodicCSI RS, this parameter may contain a reference to the TCI state. This parameter may indicate the source RS and QCL type for quasi colocation (QCL).

[0240] -Trs information in the CSI RS resource set.

[0241] Example 3.2: The second reference signal is SRS

[0242] The configuration information of SRS may be configured by higher-layer parameters (eg, semi-static configuration by higher-layer parameters). The higher-layer parameters may refer to RRC parameters. The higher-layer parameters may include one or more of the following parameters: SRS Resource and SRS PosResource.

[0243] In some embodiments, the SRS configuration information may include one or more of the following information:

[0244] -srs ResourceId or srs PosResourceId, this parameter can be used to indicate the identifier of the srs resource configuration.

[0245] -Number of SRS ports. This parameter can be defined by the high-level parameter nrofSRS ports. If this parameter is not configured, nrofSRS ports can be set to 1.

[0246] - The time domain behavior of the SRS resource configuration, which may be indicated by the higher-level parameter resourceType. This time domain behavior may be, for example, periodic, semi-persistent, or aperiodic SRS transmission.

[0247] - Slot-level periodicity and slot-level offset, which can be defined by the higher-layer parameters PeriodicityAndOffset-p or PeriodicityAndOffset-sp for periodic or semi-persistent type SRS resources.

[0248] -The number of OFDM symbols in the SRS resource and the OFDM symbol at which the SRS resource starts in one slot.

[0249] -SRS bandwidth.

[0250] - Frequency hopping bandwidth, which can be defined by the higher-level parameter Frequechhopping.

[0251] - Defines the frequency scaling factor and starting RB index for frequency scaling, which are defined by the higher layer parameters FrequencyscalingFactor PF and StartRBIndex kF respectively. If not configured, PF = 1 and kF = 0.

[0252] - Khopping mode defines the starting RB index hopping for partial frequency detection in different SRS hopping periods for aperiodic / periodic / semi-persistent SRS. If not configured, starting RB hopping is not enabled and khopping is fixed to 0 for all SRS symbols.

[0253] - Defines the frequency domain position and configurable shift, defined by the high-level parameters freqDomainPosition and freqDomainShift respectively. If freqDomainPosition is not configured, freqDomainPosition is zero.

[0254] - Cyclic shift, defined by the higher-level parameters cyclicShift-n2, cyclicShift-n4 or cyclicShift-n8 for transmit comb values ​​2, 4 or 8.

[0255] - Transmission comb value, defined by the higher-level parameter transmissionComb.

[0256] - Transmit comb offsets, defined by higher layer parameters combOffset-n2, combOffset-n4 and combOffset-n8 for transmit comb values ​​2, 4 or 8.

[0257] -SRS sequence ID, defined by the higher-level parameter sequenceId.

[0258] -Configuration of the spatial relationship between the reference RS and the target SRS, where the higher-layer parameter spatialRelationInfo or spatialRelationInfo (if configured) contains the ID of the reference RS. The reference RS can be the SS / PBCH block, the CSI-RS configured on the serving cell indicated by the higher-layer parameter servingCellId (if present), otherwise the same serving cell as the target SRS, or the SRS configured on the uplink BWP indicated by the higher-layer parameter uplinkBWP and the serving cell indicated by the higher-layer parameter servingCellId (if present), otherwise the same serving cell as the target SRS. When the target SRS is configured by the higher-layer parameter SRSPosResourceSet, the reference RS can also be the DL positioning reference signal (PRS) configured on the serving cell or non-serving cell indicated by the higher-layer parameter DL positioning reference signal (PRS), or the SS / PBCH block of a non-serving cell indicated by the higher-layer parameter ssbNcell. If the communication device (such as the first device described above) is configured with [TCI state] of [TCI-StateId_r17], then reference.

[0259] The method embodiment of the present application is described in detail above in conjunction with Figures 1 and 2. The device embodiment of the present application is described in detail below in conjunction with Figures 3 to 5. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0260] FIG3 is a schematic structural diagram of a communication device provided in one embodiment of the present application.

[0261] The communication device 300 shown in Figure 3 may be the first device mentioned above. The communication device 300 may include a receiving module 310 and a transmitting module 320. The receiving module 310 may be configured to receive the first reference signal from a second device based on the configuration information of the first reference signal. The transmitting module 320 may be configured to transmit the second reference signal to the second device based on the configuration information of the second reference signal. The first reference signal and the second reference signal are used to determine first channel information and second channel information, respectively, and the first channel information and the second channel information are identical.

[0262] Optionally, in some embodiments, the configuration information of the first reference signal and the configuration information of the second reference signal are both configuration information for a first link, where the first link is a communication link with two transmission directions, and the two transmission directions include a transmission direction from the first device to the second device, and a transmission direction from the second device to the first device.

[0263] Optionally, in some embodiments, the first reference signal and the second reference signal are reference signals configured uniformly.

[0264] Optionally, in some embodiments, part or all of the configuration parameters of the first reference signal and the second reference signal are shared parameters of the first reference signal and the second reference signal.

[0265] Optionally, in some embodiments, some configuration parameters of the second reference signal are determined based on configuration information of the first reference signal; or some configuration parameters of the first reference signal are determined based on configuration information of the second reference signal.

[0266] Optionally, in some embodiments, the partial configuration parameters include configuration parameters corresponding to values ​​in the first reference signal and the second reference signal.

[0267] Optionally, in some embodiments, the part of the configuration parameters includes one or more of the following configuration parameters: a frequency domain position of a reference signal, and spatial information of the reference signal.

[0268] Optionally, in some embodiments, the first reference signal and the second reference signal are a pair of reference signals having a paired relationship among independently configured reference signals.

[0269] Optionally, in some embodiments, the configuration information of the first reference signal includes first information for indicating the pairing relationship; and / or the configuration information of the second reference signal includes second information for indicating the pairing relationship.

[0270] Optionally, in some embodiments, the first information is a first index, the second information is a second index, and the first index and the second index correspond to each other.

[0271] Optionally, in some embodiments, the first reference signal and the second reference signal having a paired relationship satisfy a first condition, and the first condition is associated with one or more of the following information: spatial information of the first reference signal and the second reference signal; and frequency domain positions of the first reference signal and the second reference signal.

[0272] Optionally, in some embodiments, the first condition includes one or more of the following: the receiving beam of the first reference signal is the same as the transmitting beam of the second reference signal; the transmitting beam of the first reference signal is the same as the receiving beam of the second reference signal; and the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

[0273] Optionally, in some embodiments, the spatial information of the first reference signal is associated with the second reference signal; or, the spatial information of the second reference signal is associated with the first reference signal.

[0274] Optionally, in some embodiments, the communication device 300 further includes: a generating module, configured to generate user-specific information according to the first channel information.

[0275] Optionally, in some embodiments, the effective time of the user-specific information is determined based on a first reference time, and the first reference time is determined based on one or more of the following times: the transmission time of the first reference signal; the transmission time of the second reference signal; and the transmission time of the first feedback information, wherein the first feedback information is used to indicate that the first device successfully receives the reference signal configuration information, and the reference signal configuration information includes the configuration information of the first reference signal and the configuration information of the second reference signal.

[0276] Optionally, in some embodiments, the effective time of the user-specific information is equal to or later than a first time, and the first time is determined based on T time units after the first reference time, where T is a positive integer greater than or equal to 1.

[0277] Optionally, in some embodiments, the first reference time is the transmission time of a target reference signal, wherein the target reference signal is the reference signal with a later transmission time between the first reference signal and the second reference signal; or, the first reference time is the transmission time of the first feedback information.

[0278] Optionally, in some embodiments, the first reference signal and the second reference signal are a downlink reference signal and an uplink reference signal respectively; or, the first transmission reference signal and the second reference signal are both sidelink reference signals.

[0279] Optionally, in some embodiments, both the first reference signal and the second reference signal are used to generate user-specific information.

[0280] FIG4 is a schematic structural diagram of a communication device provided in another embodiment of the present application.

[0281] The communication device 400 in Figure 4 may be the second device mentioned above. The communication device 400 may include a transmitting module 410 and a receiving module 420. The transmitting module 410 may be configured to transmit the first reference signal to the first device based on the configuration information of the first reference signal. The receiving module 420 may be configured to receive the second reference signal from the first device based on the configuration information of the second reference signal. The first reference signal and the second reference signal are used to determine the first channel information and the second channel information, respectively, and the first channel information and the second channel information are the same.

[0282] Optionally, in some embodiments, the configuration information of the first reference signal and the configuration information of the second reference signal are both configuration information for a first link, where the first link is a communication link with two transmission directions, and the two transmission directions include a transmission direction from the first device to the second device, and a transmission direction from the second device to the first device.

[0283] Optionally, in some embodiments, the first reference signal and the second reference signal are reference signals configured uniformly.

[0284] Optionally, in some embodiments, part or all of the configuration parameters of the first reference signal and the second reference signal are shared parameters of the first reference signal and the second reference signal.

[0285] Optionally, in some embodiments, some configuration parameters of the second reference signal are determined based on configuration information of the first reference signal; or some configuration parameters of the first reference signal are determined based on configuration information of the second reference signal.

[0286] Optionally, in some embodiments, the partial configuration parameters include configuration parameters corresponding to values ​​in the first reference signal and the second reference signal.

[0287] Optionally, in some embodiments, the part of the configuration parameters includes one or more of the following configuration parameters: a frequency domain position of a reference signal, and spatial information of the reference signal.

[0288] Optionally, in some embodiments, the first reference signal and the second reference signal are a pair of reference signals having a paired relationship among independently configured reference signals.

[0289] Optionally, in some embodiments, the configuration information of the first reference signal includes first information for indicating the pairing relationship; and / or the configuration information of the second reference signal includes second information for indicating the pairing relationship.

[0290] Optionally, in some embodiments, the first information is a first index, the second information is a second index, and the first index and the second index correspond to each other.

[0291] Optionally, in some embodiments, the first reference signal and the second reference signal having a paired relationship satisfy a first condition, and the first condition is associated with one or more of the following information: spatial information of the first reference signal and the second reference signal; and frequency domain positions of the first reference signal and the second reference signal.

[0292] Optionally, in some embodiments, the first condition includes one or more of the following: the receiving beam of the first reference signal is the same as the transmitting beam of the second reference signal; the transmitting beam of the first reference signal is the same as the receiving beam of the second reference signal; and the frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

[0293] Optionally, in some embodiments, the spatial information of the first reference signal is associated with the second reference signal; or, the spatial information of the second reference signal is associated with the first reference signal.

[0294] Optionally, in some embodiments, the communication device 400 may further include: a generating module, configured to generate user-specific information according to the second channel information.

[0295] Optionally, in some embodiments, the effective time of the user-specific information is determined based on a first reference time, and the first reference time is determined based on one or more of the following times: the transmission time of the first reference signal; the transmission time of the second reference signal; and the transmission time of the first feedback information, wherein the first feedback information is used to indicate that the first device successfully receives the reference signal configuration information, and the reference signal configuration information includes the configuration information of the first reference signal and the configuration information of the second reference signal.

[0296] Optionally, in some embodiments, the effective time of the user-specific information is equal to or later than a first time, and the first time is determined based on T time units after the first reference time, where T is a positive integer greater than or equal to 1.

[0297] Optionally, in some embodiments, the first reference time is the transmission time of a target reference signal, wherein the target reference signal is the reference signal with a later transmission time between the first reference signal and the second reference signal; or, the first reference time is the transmission time of the first feedback information.

[0298] Optionally, in some embodiments, the first reference signal and the second reference signal are a downlink reference signal and an uplink reference signal respectively; or, the first transmission reference signal and the second reference signal are both sidelink reference signals.

[0299] Optionally, in some embodiments, both the first reference signal and the second reference signal are used to generate user-specific information.

[0300] Figure 5 is a schematic diagram of the structure of an apparatus according to an embodiment of the present application. The dashed lines in Figure 5 indicate that the unit or module is optional. Apparatus 500 may be used to implement the method described in the above method embodiment. Apparatus 500 may be a chip or a communication device. The communication device may be, for example, the first device or the second device mentioned above.

[0301] The device 500 may include one or more processors 510. The processor 510 may support the device 500 to implement the method described in the method embodiment above. The processor 510 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor 510 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0302] The apparatus 500 may further include one or more memories 520. The memories 520 store programs that can be executed by the processor 510, causing the processor 510 to perform the methods described in the above method embodiments. The memories 520 may be independent of the processor 510 or integrated into the processor 510.

[0303] The apparatus 500 may further include a transceiver 530. The processor 510 may communicate with other devices or chips via the transceiver 530. For example, the processor 510 may transmit and receive data with other devices or chips via the transceiver 530.

[0304] In some embodiments, the apparatus 500 may be located in the communication device 300 in FIG3 . The receiving module 310 and the transmitting module 320 in the communication device 300 may correspond to the transceiver in the apparatus 500. Alternatively, the functions of the receiving module 310 and the transmitting module 320 may be implemented by the transceiver 530 in the apparatus 500 under the control of the processor 510.

[0305] In some embodiments, the apparatus 500 may be located in the communication device 400 in Figure 4. The transmitting module 410 and the receiving module 420 in the communication device 400 may correspond to the transceiver in the apparatus 500. Alternatively, the functions of the transmitting module 410 and the receiving module 420 may be implemented by the transceiver 530 in the apparatus 500 under the control of the processor 510.

[0306] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0307] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0308] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal device or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the communication device in each embodiment of the present application.

[0309] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0310] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0311] The “configuration” in the embodiment of the present application may include configuration through at least one of system messages, radio resource control (RRC) signaling and media access control element (MAC CE).

[0312] In some embodiments of the present application, "predefined" or "preset" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device or a network device). This application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0313] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0314] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0315] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0316] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0317] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0318] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0319] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0320] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The first device receives the first reference signal from the second device according to the configuration information of the first reference signal; The first device sends the second reference signal to the second device according to the configuration information of the second reference signal; The first reference signal and the second reference signal are used to determine first channel information and second channel information respectively, and the first channel information and the second channel information are the same.

2. The method according to claim 1, characterized in that The configuration information of the first reference signal and the configuration information of the second reference signal are both configuration information for the first link, where the first link is a communication link with two transmission directions, and the two transmission directions include a transmission direction from the first device to the second device, and a transmission direction from the second device to the first device.

3. The method according to claim 1 or 2, characterized in that The first reference signal and the second reference signal are reference signals configured uniformly.

4. The method according to claim 3, characterized in that Part or all of the configuration parameters of the first reference signal and the second reference signal are shared parameters of the first reference signal and the second reference signal.

5. The method according to claim 3, characterized in that Some configuration parameters of the second reference signal are determined based on the configuration information of the first reference signal; or some configuration parameters of the first reference signal are determined based on the configuration information of the second reference signal.

6. The method according to claim 5, characterized in that The partial configuration parameters include configuration parameters corresponding to values ​​in the first reference signal and the second reference signal.

7. The method according to claim 6, characterized in that The partial configuration parameters include one or more of the following configuration parameters: a frequency domain position of a reference signal, and spatial information of the reference signal.

8. The method according to claim 1, characterized in that The first reference signal and the second reference signal are a pair of reference signals having a paired relationship among independently configured reference signals.

9. The method according to claim 8, characterized in that The configuration information of the first reference signal includes first information for indicating the pairing relationship; and / or the configuration information of the second reference signal includes second information for indicating the pairing relationship.

10. The method according to claim 9, characterized in that The first information is a first index, the second information is a second index, and the first index corresponds to the second index.

11. The method according to any one of claims 8 to 10, characterized in that The first reference signal and the second reference signal, which are in a paired relationship, meet a first condition, where the first condition is associated with one or more of the following information: spatial information of the first reference signal and the second reference signal; and Frequency domain positions of the first reference signal and the second reference signal.

12. The method according to claim 11, characterized in that The first condition includes one or more of the following: The receiving beam of the first reference signal is the same as the transmitting beam of the second reference signal; The transmit beam of the first reference signal is the same as the receive beam of the second reference signal; and The frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

13. The method according to any one of claims 1 to 12, characterized in that The spatial information of the first reference signal is associated with the second reference signal; or the spatial information of the second reference signal is associated with the first reference signal.

14. The method according to any one of claims 1 to 13, characterized in that The method further comprises: The first device generates user-specific information according to the first channel information.

15. The method according to claim 14, characterized in that The effective time of the user-specific information is determined based on a first reference time, and the first reference time is determined based on one or more of the following times: a transmission time of the first reference signal; a transmission time of the second reference signal; as well as The transmission time of first feedback information, wherein the first feedback information is used to indicate that the first device successfully receives reference signal configuration information, and the reference signal configuration information includes configuration information of the first reference signal and configuration information of the second reference signal.

16. The method according to claim 15, characterized in that The effective time of the user-specific information is equal to or later than a first time, and the first time is determined based on T time units after the first reference time, where T is a positive integer greater than or equal to 1.

17. The method according to claim 15 or 16, characterized in that: The first reference time is a transmission time of a target reference signal, wherein the target reference signal is a reference signal with a later transmission time between the first reference signal and the second reference signal; or The first reference time is the transmission time of the first feedback information.

18. The method according to any one of claims 1 to 17, characterized in that The first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal; or, the first transmission reference signal and the second reference signal are both sidelink reference signals.

19. The method according to any one of claims 1 to 18, characterized in that The first reference signal and the second reference signal are both used to generate user-specific information.

20. A wireless communication method, characterized in that: include: The second device sends the first reference signal to the first device according to the configuration information of the first reference signal; The second device receives the second reference signal from the first device according to configuration information of the second reference signal; The first reference signal and the second reference signal are used to determine first channel information and second channel information respectively, and the first channel information and the second channel information are the same.

21. The method according to claim 20, characterized in that The configuration information of the first reference signal and the configuration information of the second reference signal are both configuration information for the first link, where the first link is a communication link with two transmission directions, and the two transmission directions include a transmission direction from the first device to the second device, and a transmission direction from the second device to the first device.

22. The method according to claim 20 or 21, characterized in that The first reference signal and the second reference signal are reference signals configured uniformly.

23. The method according to claim 22, characterized in that Part or all of the configuration parameters of the first reference signal and the second reference signal are shared parameters of the first reference signal and the second reference signal.

24. The method according to claim 22, characterized in that Some configuration parameters of the second reference signal are determined based on the configuration information of the first reference signal; or some configuration parameters of the first reference signal are determined based on the configuration information of the second reference signal.

25. The method according to claim 24, characterized in that The partial configuration parameters include configuration parameters corresponding to values ​​in the first reference signal and the second reference signal.

26. The method according to claim 25, characterized in that The partial configuration parameters include one or more of the following configuration parameters: a frequency domain position of a reference signal, and spatial information of the reference signal.

27. The method according to claim 20, wherein The first reference signal and the second reference signal are a pair of reference signals having a paired relationship among independently configured reference signals.

28. The method according to claim 27, characterized in that The configuration information of the first reference signal includes first information for indicating the pairing relationship; and / or the configuration information of the second reference signal includes second information for indicating the pairing relationship.

29. The method according to claim 28, characterized in that The first information is a first index, the second information is a second index, and the first index corresponds to the second index.

30. The method according to any one of claims 27 to 29, wherein: The first reference signal and the second reference signal, which are in a paired relationship, meet a first condition, where the first condition is associated with one or more of the following information: spatial information of the first reference signal and the second reference signal; and Frequency domain positions of the first reference signal and the second reference signal.

31. The method according to claim 30, characterized in that The first condition includes one or more of the following: The receiving beam of the first reference signal is the same as the transmitting beam of the second reference signal; The transmit beam of the first reference signal is the same as the receive beam of the second reference signal; and The frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

32. The method according to any one of claims 20 to 31, characterized in that The spatial information of the first reference signal is associated with the second reference signal; or the spatial information of the second reference signal is associated with the first reference signal.

33. The method according to any one of claims 20 to 32, wherein: The method further comprises: The second device generates user-specific information according to the second channel information.

34. The method according to claim 33, wherein The effective time of the user-specific information is determined based on a first reference time, and the first reference time is determined based on one or more of the following times: a transmission time of the first reference signal; a transmission time of the second reference signal; as well as The transmission time of first feedback information, wherein the first feedback information is used to indicate that the first device successfully receives reference signal configuration information, and the reference signal configuration information includes configuration information of the first reference signal and configuration information of the second reference signal.

35. The method according to claim 34, wherein The effective time of the user-specific information is equal to or later than a first time, and the first time is determined based on T time units after the first reference time, where T is a positive integer greater than or equal to 1.

36. The method according to claim 34 or 35, characterized in that: The first reference time is a transmission time of a target reference signal, wherein the target reference signal is a reference signal with a later transmission time between the first reference signal and the second reference signal; or The first reference time is the transmission time of the first feedback information.

37. The method according to any one of claims 20 to 36, wherein: The first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal; or, the first transmission reference signal and the second reference signal are both sidelink reference signals.

38. The method according to any one of claims 20 to 37, wherein The first reference signal and the second reference signal are both used to generate user-specific information.

39. A communication device, characterized in that: The communication device is a first device, and the communication device includes: a receiving module, configured to receive the first reference signal from a second device according to configuration information of the first reference signal; a sending module, configured to send the second reference signal to the second device according to the configuration information of the second reference signal; The first reference signal and the second reference signal are used to determine first channel information and second channel information respectively, and the first channel information and the second channel information are the same.

40. The communication device according to claim 39, wherein The configuration information of the first reference signal and the configuration information of the second reference signal are both configuration information for the first link, where the first link is a communication link with two transmission directions, and the two transmission directions include a transmission direction from the first device to the second device, and a transmission direction from the second device to the first device.

41. The communication device according to claim 39 or 40, characterized in that The first reference signal and the second reference signal are reference signals configured uniformly.

42. The communication device according to claim 41, wherein Part or all of the configuration parameters of the first reference signal and the second reference signal are shared parameters of the first reference signal and the second reference signal.

43. The communication device according to claim 41, wherein Some configuration parameters of the second reference signal are determined based on the configuration information of the first reference signal; or some configuration parameters of the first reference signal are determined based on the configuration information of the second reference signal.

44. The communication device according to claim 43, wherein The partial configuration parameters include configuration parameters corresponding to values ​​in the first reference signal and the second reference signal.

45. The communication device according to claim 44, characterized in that The partial configuration parameters include one or more of the following configuration parameters: a frequency domain position of a reference signal, and spatial information of the reference signal.

46. ​​The communication device according to claim 39, wherein The first reference signal and the second reference signal are a pair of reference signals having a paired relationship among independently configured reference signals.

47. The communication device according to claim 46, characterized in that The configuration information of the first reference signal includes first information for indicating the pairing relationship; and / or the configuration information of the second reference signal includes second information for indicating the pairing relationship.

48. The communication device according to claim 47, characterized in that The first information is a first index, the second information is a second index, and the first index corresponds to the second index.

49. The communication device according to any one of claims 46 to 48, characterized in that The first reference signal and the second reference signal, which are in a paired relationship, meet a first condition, where the first condition is associated with one or more of the following information: spatial information of the first reference signal and the second reference signal; and Frequency domain positions of the first reference signal and the second reference signal.

50. The communication device according to claim 49, wherein The first condition includes one or more of the following: The receiving beam of the first reference signal is the same as the transmitting beam of the second reference signal; The transmit beam of the first reference signal is the same as the receive beam of the second reference signal; and The frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

51. The communication device according to any one of claims 39-50, characterized in that The spatial information of the first reference signal is associated with the second reference signal; or the spatial information of the second reference signal is associated with the first reference signal.

52. The communication device according to any one of claims 39 to 51, characterized in that The communication device further includes: A generating module is configured to generate user-specific information according to the first channel information.

53. The communication device according to claim 52, characterized in that The effective time of the user-specific information is determined based on a first reference time, and the first reference time is determined based on one or more of the following times: a transmission time of the first reference signal; a transmission time of the second reference signal; as well as The transmission time of first feedback information, wherein the first feedback information is used to indicate that the first device successfully receives reference signal configuration information, and the reference signal configuration information includes configuration information of the first reference signal and configuration information of the second reference signal.

54. The communication device according to claim 53, characterized in that The effective time of the user-specific information is equal to or later than a first time, and the first time is determined based on T time units after the first reference time, where T is a positive integer greater than or equal to 1.

55. The communication device according to claim 53 or 54, characterized in that: The first reference time is a transmission time of a target reference signal, wherein the target reference signal is a reference signal with a later transmission time between the first reference signal and the second reference signal; or The first reference time is the transmission time of the first feedback information.

56. The communication device according to any one of claims 39 to 55, characterized in that The first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal; or, the first transmission reference signal and the second reference signal are both sidelink reference signals.

57. The communication device according to any one of claims 39 to 56, characterized in that The first reference signal and the second reference signal are both used to generate user-specific information.

58. A communication device, characterized in that The communication device is a second device, and the communication device includes: a sending module, configured to send the first reference signal to the first device according to configuration information of the first reference signal; a receiving module, configured to receive the second reference signal from the first device according to configuration information of the second reference signal; The first reference signal and the second reference signal are used to determine first channel information and second channel information respectively, and the first channel information and the second channel information are the same.

59. The communication device according to claim 58, characterized in that The configuration information of the first reference signal and the configuration information of the second reference signal are both configuration information for the first link, where the first link is a communication link with two transmission directions, and the two transmission directions include a transmission direction from the first device to the second device, and a transmission direction from the second device to the first device.

60. The communication device according to claim 58 or 59, characterized in that The first reference signal and the second reference signal are reference signals configured uniformly.

61. The communication device according to claim 60, characterized in that Part or all of the configuration parameters of the first reference signal and the second reference signal are shared parameters of the first reference signal and the second reference signal.

62. The communication device according to claim 60, wherein: Some configuration parameters of the second reference signal are determined based on the configuration information of the first reference signal; or some configuration parameters of the first reference signal are determined based on the configuration information of the second reference signal.

63. The communication device according to claim 62, characterized in that The partial configuration parameters include configuration parameters corresponding to values ​​in the first reference signal and the second reference signal.

64. The communication device according to claim 63, characterized in that The partial configuration parameters include one or more of the following configuration parameters: a frequency domain position of a reference signal, and spatial information of the reference signal.

65. The communication device according to claim 58, wherein The first reference signal and the second reference signal are a pair of reference signals having a paired relationship among independently configured reference signals.

66. The communication device according to claim 65, characterized in that The configuration information of the first reference signal includes first information for indicating the pairing relationship; and / or the configuration information of the second reference signal includes second information for indicating the pairing relationship.

67. The communication device according to claim 66, characterized in that The first information is a first index, the second information is a second index, and the first index corresponds to the second index.

68. The communication device according to any one of claims 65 to 67, characterized in that The first reference signal and the second reference signal, which are in a paired relationship, meet a first condition, where the first condition is associated with one or more of the following information: spatial information of the first reference signal and the second reference signal; and Frequency domain positions of the first reference signal and the second reference signal.

69. The communication device according to claim 68, characterized in that The first condition includes one or more of the following: The receiving beam of the first reference signal is the same as the transmitting beam of the second reference signal; The transmit beam of the first reference signal is the same as the receive beam of the second reference signal; and The frequency domain position of the first reference signal is the same as the frequency domain position of the second reference signal.

70. The communication device according to any one of claims 58 to 69, characterized in that The spatial information of the first reference signal is associated with the second reference signal; or the spatial information of the second reference signal is associated with the first reference signal.

71. The communication device according to any one of claims 58 to 70, characterized in that The communication device further includes: A generating module is configured to generate user-specific information according to the second channel information.

72. The communication device according to claim 71, characterized in that The effective time of the user-specific information is determined based on a first reference time, and the first reference time is determined based on one or more of the following times: a transmission time of the first reference signal; a transmission time of the second reference signal; as well as The transmission time of first feedback information, wherein the first feedback information is used to indicate that the first device successfully receives reference signal configuration information, and the reference signal configuration information includes configuration information of the first reference signal and configuration information of the second reference signal.

73. The communication device according to claim 72, characterized in that The effective time of the user-specific information is equal to or later than a first time, and the first time is determined based on T time units after the first reference time, where T is a positive integer greater than or equal to 1.

74. The communication device according to claim 72 or 73, characterized in that: The first reference time is a transmission time of a target reference signal, wherein the target reference signal is a reference signal with a later transmission time between the first reference signal and the second reference signal; or The first reference time is the transmission time of the first feedback information.

75. The communication device according to any one of claims 58 to 74, characterized in that The first reference signal and the second reference signal are respectively a downlink reference signal and an uplink reference signal; or, the first transmission reference signal and the second reference signal are both sidelink reference signals.

76. The communication device according to any one of claims 58 to 75, characterized in that The first reference signal and the second reference signal are both used to generate user-specific information.

77. A communication device, characterized in that The device comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory, so that the communication device executes the method according to any one of claims 1 to 19, or the communication device executes the method according to any one of claims 20 to 38.

78. A device, characterized in that The device comprises a processor configured to call a program from a memory, so that the device executes the method according to any one of claims 1 to 19, or the device executes the method according to any one of claims 20 to 38.

79. A chip, characterized in that The device comprises a processor configured to call a program from a memory, so that a device equipped with the chip executes a method according to any one of claims 1 to 19, or executes a method according to any one of claims 20 to 38.

80. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 19, or causing a computer to execute the method according to any one of claims 20 to 38.

81. A computer program product, characterized in that The method comprises a program, wherein the program causes a computer to execute the method according to any one of claims 1 to 19, or causes a computer to execute the method according to any one of claims 20 to 38.

82. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 19, or enables a computer to execute the method according to any one of claims 20 to 38.

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