Signal sending, receiving, information feedback method, device, communication node and medium

Abstract

The present application provides a signal transmission, reception, and information feedback method, device, communication node, and medium. The method obtains configuration information of a side link reference signal resource; sends a channel state information reference signal on a side link data channel according to the configuration information, and indicates first indication information through side link control information.

Description

Technical Field

[0001] The present application relates to a wireless communication network, for example, to a signal sending, receiving, information feedback method, device, communication node and medium. Background Art

[0002] With the development of wireless communication technology and the increasing communication needs of users, sidelink communication can meet the communication needs of low latency, high reliability and high speed. In the application scenario of sidelink communication, when there is a service transmission between user equipment (UE), the service data does not pass through the network side, that is, it does not pass through the cellular link between the UE and the base station, but is directly transmitted from the data source UE to the target UE through the sidelink, thereby reducing the burden on the cellular network, reducing power consumption, and meeting the needs of high data rate services and neighboring services. However, due to the lack of effective resource indication and information interaction between different UEs, it is impossible to accurately measure the channel of the sidelink, and the reliability of sidelink communication is poor. Summary of the invention

[0003] The present application provides a signal sending, receiving, and information feedback method, device, communication node, and medium to improve the reliability of edge link communications.

[0004] The embodiment of the present application provides a signal sending method, which is applied to a first user equipment, including:

[0005] Obtaining configuration information of edge link reference signal resources;

[0006] A channel state information reference signal (Channel State Information-Reference Signal, CSI-RS) is sent on the side link data channel according to the configuration information, and first indication information is indicated through side link control information (Sidelink Control Information, SCI).

[0007] The embodiment of the present application further provides a signal receiving method, which is applied to a second user equipment, including:

[0008] receiving indication information of a channel state information reference signal, where the indication information is set to indicate the number of ports and resource locations of the channel state information reference signal, and the indication information includes first indication information;

[0009] The channel state information reference signal is received according to the indication information.

[0010] The embodiment of the present application further provides an information feedback method, which is applied to a second user equipment and is characterized by comprising:

[0011] Determine the feedback resource of the side link channel state information (CSI) according to the set time information;

[0012] Side link channel state information is sent based on the feedback resource.

[0013] The embodiment of the present application also provides a signal sending device, including:

[0014] A configuration information acquisition module, configured to acquire configuration information of edge link reference signal resources;

[0015] The sending module is configured to send a channel state information reference signal on a side link data channel according to the configuration information, and indicate the first indication information through the side link control information.

[0016] The present application also provides a signal receiving device, including:

[0017] an indication information receiving module, configured to receive indication information of a channel state information reference signal, wherein the indication information is configured to indicate the number of ports and resource locations of the channel state information reference signal, and the indication information includes first indication information;

[0018] The reference signal receiving module is configured to receive the channel state information reference signal according to the indication information.

[0019] The present application also provides an information feedback device, including:

[0020] A feedback resource determination module, configured to determine feedback resources for side link channel state information according to set time information;

[0021] A feedback module is configured to send side link channel state information based on the feedback resource.

[0022] The present application also provides a communication node, including:

[0023] one or more processors;

[0024] A storage device for storing one or more programs;

[0025] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned signal sending method.

[0026] The present application also provides a communication node, including:

[0027] one or more processors;

[0028] A storage device for storing one or more programs;

[0029] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned signal receiving method or information feedback method.

[0030] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the above-mentioned signal sending method, signal receiving method or information feedback method is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A flowchart of a signal sending method provided by an embodiment;

[0032] Figure 2 A schematic diagram of edge link communication provided by an embodiment;

[0033] Figure 3 A schematic diagram of receiving side link data provided by an embodiment;

[0034] Figure 4 A schematic diagram of an embodiment providing an indication of the number of ports corresponding to a side link channel state information reference signal;

[0035] Figure 5 A schematic diagram of a port number and resource index corresponding to an indication side link channel state information reference signal provided by an embodiment;

[0036] Figure 6 A schematic diagram of a resource index indicating a side link channel state information reference signal under a set number of ports provided by an embodiment;

[0037] Figure 7 A schematic diagram of a resource index indicating a side link channel state information reference signal under the number of ports with the largest number of configured resources provided by an embodiment;

[0038] Figure 8 A schematic diagram of a port number and resource index corresponding to an indication side link channel state information reference signal provided by an embodiment;

[0039] Fig. 9 A flowchart of a signal receiving method provided by an embodiment;

[0040] Fig.10 A flowchart of an information feedback method provided by an embodiment;

[0041] Fig.11 A schematic diagram of the structure of a signal sending device provided by an embodiment;

[0042] Fig.12 A schematic diagram of a signal receiving device according to an embodiment of the present invention

[0043] Fig.13 A schematic diagram of the structure of an information feedback device provided by an embodiment;

[0044] Fig.14 A schematic diagram of the structure of a communication node provided by an embodiment;

[0045] Fig.15 A schematic diagram of the structure of another communication node provided by an embodiment. DETAILED DESCRIPTION

[0046] The present application is described below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily. It should also be noted that, for ease of description, only the parts related to the present application rather than all structures are shown in the accompanying drawings.

[0047] Edge link communication technology can reduce the burden on cellular networks, reduce the battery power consumption of user devices, and improve the robustness of network infrastructure, which can well meet the requirements of high data rate services and proximity services, and also support direct communication in scenarios without network coverage to meet special communication needs such as public safety. In the fifth generation wireless communication system (5G), the smallest resource unit in the time domain is a symbol, which is composed of 12 extended cycle prefixes (ECP) or 14 normal cycle prefixes (NCP) of continuous symbols to form a time slot in the time domain, or one or more continuous symbols (less than or equal to 7 symbols) to form a mini-slot. The smallest resource unit in the frequency domain is a subcarrier, and the size of the subcarrier is a limited number of optional values ​​(15kHZ, 30kHZ, 60kHZ, 120kHZ, 240kHZ). 12 consecutive subcarriers constitute a frequency domain resource block (Resource Block, RB), and RB is a resource unit for frequency domain resource configuration. In the sidelink communication application scenario of the 5G communication system, based on the above-mentioned time domain and frequency domain resource units, a sidelink communication resource pool (Sidelink Resource Pool) is composed of a group of time domain and frequency domain resource units. In this resource pool, the UE performs sidelink communication according to the configured or pre-configured resources.

[0048] In the 5G downlink cellular network, the base station adopts a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform and uses CSI-RS as a downlink channel measurement signal. The UE feeds back the CSI to the base station based on the uplink scheduling indication information of the base station. In the side link communication system, different UEs also need to measure and feedback the side link channel based on the CSI-RS signal. Due to the lack of effective information interaction, it is impossible to accurately measure the channel of the side link and feedback CSI, resulting in poor reliability of the side link communication. The signal sending, receiving, and information feedback method of this embodiment provides a solution for how the first UE sends CSI-RS to the second UE, how the second UE receives the corresponding CSI-RS, and how the second UE feeds back the CSI information of the side link to the first UE, thereby improving the reliability of the side link communication.

[0049] Figure 1 Flow chart of a signal transmission method provided by an embodiment. The signal transmission method provided by this embodiment is applied to a first user equipment, and the first user equipment is a user equipment that transmits CSI-RS in side link communication. Figure 1 As shown, the method includes step S110 and step S120.

[0050] In step S110, configuration information of side link reference signal resources is obtained.

[0051] In this embodiment, the network side configures a Sidelink resource pool for the UE, or the system pre-configures a Sidelink resource pool, and the UE uses resources in the Sidelink resource pool to carry Sidelink information. The Sidelink resource pool includes physical sidelink control channel (Pysical Sidelink Control Channel, PSCCH) PSCCH resources and physical sidelink control channel (Pysical Sidelink Shared Channel, PSSCH) resources.

[0052] This embodiment configures or pre-configures the resource information of the channel measurement reference signal of the sidelink before performing the sidelink channel measurement, and the first UE and the second UE have the same understanding of the configuration information of the resource. If it is within the coverage of the service node, the network side can configure the available CSI-RS resources of the first UE through Radio Resource Control (RRC) signaling, and the RRC signaling on the network side or the sidelink RRC signaling of the first UE indicates the available CSI-RS resources of the first UE to the second UE. At least one set of available CSI-RS resource information can be configured through the RRC signaling on the network side, and the resource information includes at least one of the time domain information, frequency domain information, code domain information, number of ports, resource density and power information of the CSI-RS. If it is in a coverage-free scenario, the available CSI-RS resources of the first UE can be determined through pre-configuration information, and the first UE indicates the CSI-RS resources used by the first UE to the second UE through the sidelink physical layer indication information and / or sidelink RRC signaling.

[0053] In step S120, a channel state information reference signal is sent on the side link data channel according to the configuration information, and the first indication information is indicated through the side link control information.

[0054] Figure 2 FIG. 1 is a schematic diagram of edge link communication provided by an embodiment. Figure 2 As shown, the service data between the first UE and the second UE does not pass through the network side of the service node or the core network (Core), that is, it does not pass through the cellular link forwarding between the UE and the service node, but is directly transmitted from the data source UE to the target UE through the Sidelink. The service node can be a base station (E-UTRANNodeB, eNB) or (Generation NodeB, gNB), etc.

[0055] In one embodiment, the first UE sends a CSI-RS to the second UE on a side link data channel according to configuration information, and indicates first indication information to the second UE through SCI, where the first indication information is set to indicate information related to the side link reference signal resource where the CSI-RS is located.

[0056] In the Sidelink communication system, UEs use Sidelink resources to transmit information. Depending on the specific application scenarios and service types, Sidelink communication methods include device to device (D2D) communication, vehicle to vehicle (V2V) communication, vehicle to roadside unit (V2I) communication, and vehicle to pedestrian handheld device (V2P).

[0057] Figure 3 FIG. 1 is a schematic diagram of receiving edge link data provided by an embodiment. Figure 3 As shown, in the New Radio (NR) Sidelink communication, the first UE uses PSCCH resources to send Sidelink control information and uses PSSCH resources to send Sidelink data. The signal sent on the PSCCH or PSSCH resources must use the CP-OFDM waveform. Correspondingly, the second UE monitors the resources in the Sidelink resource pool, and receives and processes the signal in the manner of receiving CP-OFDM signals. The second UE receives SCI information in the PSCCH resource pool by blind detection. After detecting the SCI information, it further receives data on the PSSCH resource according to the indication of the SCI, wherein the PSSCH channel is composed of a sub-channel (Sub-Channel) composed of several continuous RBs in the frequency domain.

[0058] In one embodiment, the first UE sends CSI-RS on the side link data channel (PSSCH) according to the configuration or pre-configuration information on the network side, and sends first indication information in the side link control channel (PSCCH), and the first indication information is set to indicate whether CSI-RS exists, or to indicate the index of CSI-RS resource, or to indicate the number of ports of CSI-RS, or to indicate the number of ports of CSI-RS and the index of CSI-RS resource under a specific number of ports. Based on the first indication information, the second UE can obtain the CSI-RS resource corresponding to the first indication information according to the notification of RRC signaling or pre-configuration information, wherein the RRC signaling can be RRC signaling on the network side or RRC signaling from the first UE of the side link. The second UE determines the resource location of the transmission side link CSI-RS according to the first indication information and the configuration information or pre-configuration information, thereby receiving the reference signal and generating CSI feedback information of the side link.

[0059] In the signal sending method of this embodiment, the first UE sends CSI-RS according to the configuration or pre-configuration information, and indicates the first indication information to the second UE through the SCI, thereby indicating the CSI-RS resource to the second UE, so that the second UE receives the reference signal according to the first indication information (it can also be combined with RRC signaling), realizes the measurement of channel state information, and improves the reliability of side link communication.

[0060] In one embodiment, the side link reference signal resource is configured based on a Sidelink resource pool, a Sidelink bandwidth (Bandwidth Part, BWP) or a Sidelink carrier; the configuration information of the side link reference signal resource is configured by the network side, or by the service node, or obtained according to pre-configuration information; the configuration information of the side link reference signal resource includes at least one of the following: time domain information, frequency domain information, code domain information, number of ports, resource density and power information of CSI-RS.

[0061] In one embodiment, the configuration information is defined by a resource pool, or is defined by a user equipment (first UE) sending a CSI-RS, or is defined by a service node, or is predefined by a protocol.

[0062] In one embodiment, there is at least one set of side link reference signal resources, and each set of side link reference signal resources corresponds to a number of ports.

[0063] In one embodiment, the first indication information includes 1-bit indication information, and the first indication information is set to indicate the existence status of the CSI-RS; the number of ports corresponding to the CSI-RS is determined by the side link RRC signaling of the first user equipment, or by the RRC signaling of the cellular link; the resource location information corresponding to the CSI-RS is determined by a predefined rule, or by the side link RRC signaling of the first UE, or by the RRC signaling of the cellular link.

[0064] In this embodiment, the sidelink CSI-RS resource is configured or pre-configured based on the Sidelink resource pool or Sidelink BWP or sidelink carrier, and the CSI-RS resource is at least one. The first UE transmits the sidelink CSI-RS in a certain slot, and carries 1-bit first indication information in the sidelink control information of its control channel. The 1-bit value is 0, indicating that the CSI-RS is not sent in the current transmission, and the value is 1, indicating that the CSI-RS is sent in the current transmission. The CSI-RS related parameters of the current transmission are obtained from the configuration and / or pre-configured information.

[0065] In one embodiment, the first indication information includes port indication information of a first bit number, and the first indication information is set to indicate the number of ports corresponding to the CSI-RS; the resource location information corresponding to the CSI-RS under the port number is determined by a predefined rule, or determined by the side link RRC signaling of the first UE, or determined by the RRC signaling of the cellular link.

[0066] Figure 4 A schematic diagram of an embodiment of an indication of the number of ports corresponding to a side link channel state information reference signal. In this embodiment, the side link CSI-RS resources under different numbers of antenna ports are configured or pre-configured based on a Sidelink resource pool or Sidelink BWP or Sidelink carrier, and the configuration information of each set of CSI-RS resources includes at least one of the time domain information, frequency domain information, code domain information, resource density and power information of the CSI-RS. In this embodiment, the type N1 of the number of ports is mapped to binary bit information with a length of the first bit number (M1), and the number of ports of the unique first UE side link CSI-RS can be determined according to the M1bit information, and the resource indication information of the side link CSI-RS is obtained according to the determined number of ports and the resource location information corresponding to the number of ports configured or pre-configured. The first UE transmits the side link CSI-RS in a certain slot, and carries the M1bit CSI-RS port indication information in the control information of its control channel. Figure 4 In the figure, three port numbers are used as an example.

[0067] In one embodiment, the first indication information includes resource index indication information of a second bit number, and the first indication information is set to indicate the number of ports corresponding to the CSI-RS, and to indicate the CSI-RS resource index under the number of ports; the resource location information corresponding to the CSI-RS resource index is determined by a predefined rule, or by the side link RRC signaling of the first user equipment, or by the RRC signaling of the cellular link.

[0068] Figure 5A schematic diagram of an embodiment providing an indication of the number of ports and resource indexes corresponding to a side link channel state information reference signal. In this embodiment, based on a Sidelink resource pool or Sidelink BWP or Sidelink carrier, a total of N2 sets of available side link CSI-RS resources are configured or pre-configured for all port number types, and the configuration information of each set of CSI-RS resources includes at least one of the time domain information, frequency domain information, code domain information, resource density, and power information of the CSI-RS. In this embodiment, the N2 sets of CSI-RS resources are mapped to binary bit information with a length of a second number of bits (M2), and the M2bit information can uniquely indicate a set of side link CSI-RS resources among the N2 sets of available side link CSI-RS resources. The first UE transmits a side link CSI-RS in a certain slot, and carries the M2bit indication information in the control information of its control channel. As Figure 5 As shown, taking three types of port numbers as an example, k1 CSI-RS resources are configured or preconfigured when the port number is 1, k2 CSI-RS resources are configured or preconfigured when the port number is 2, and k3 CSI-RS resources are configured or preconfigured when the port number is 4, then N2=k1+k2+k3, and the N2 CSI-RS resources are binary bit quantized and mapped to binary bit information of length M2. The first UE indicates the first indication information in the SCI corresponding to the currently transmitted PSSCH containing the CSI-RS.

[0069] In one embodiment, the number of bits of the first indication information includes a third number of bits of resource index indication information, and the first indication information is set to indicate the channel state information reference signal resource index under a set port number; the set port number is determined by the side link RRC signaling of the first UE, or by the RRC signaling of the cellular link; the resource location information corresponding to the CSI-RS resource index is determined by a predefined rule, or by the side link RRC signaling of the first UE, or by the RRC signaling of the cellular link.

[0070] Figure 6A schematic diagram of a resource index indicating a side link channel state information reference signal under a set number of ports provided for one embodiment. In this embodiment, based on a sidelink resource pool or sidelink BWP or sidelink carrier configuration or pre-configuration of sidelink CSI-RS resources, the configuration information of each set of CSI-RS resources includes at least one of the time domain information, frequency domain information, code domain information, resource density and power information of the CSI-RS. In this embodiment, for a specific number of CSI-RS resources N' configured for a certain set number of ports, N' is mapped to binary bit information of a third number of bits (M3) in length, and the M3bit information can uniquely indicate a specific set of side link CSI-RS resources among the available side link CSI-RS resources under the set number of ports. The first UE transmits a side link CSI-RS in a certain slot, and carries the M3bit indication information in the control information of its control channel. As Figure 6 As shown, when the number of ports is 1, k1 CSI-RS resources are configured or preconfigured, when the number of ports is 2, k2 CSI-RS resources are configured or preconfigured, and when the number of ports is 4, k3 CSI-RS resources are configured or preconfigured. Taking the configured or preconfigured set number of ports as 2 as an example, when the number of ports is 2, N'=k2, and N' is mapped to the first indication information of M3 bits. The first UE indicates the CSI-RS resource index under the set number of ports in the SCI corresponding to the currently transmitted PSSCH containing CSI-RS. The set number of ports for CSI-RS transmission can be indicated by the side link RRC signaling of the first UE or the RRC signaling of the cellular link.

[0071] In one embodiment, the number of bits of the first indication information includes resource index indication information of a fourth number of bits, the first indication information is set to indicate the CSI-RS resource index under the number of ports with the largest number of configured CSI-RS resources; the CSI-RS resource index is associated with the CSI-RS resources under other port numbers; the number of ports is determined by the side link RRC signaling of the first UE, or by the RRC signaling of the cellular link; the resource location information corresponding to the CSI-RS resource index is determined by a predefined rule, or is determined by the side link RRC signaling of the first user equipment, or is determined by the RRC signaling of the cellular link.

[0072] Figure 7A schematic diagram of a resource index indicating a side link channel state information reference signal under the number of ports with the largest number of configured resources is provided for an embodiment. In this embodiment, the side link CSI-RS resources are configured or pre-configured based on a sidelink resource pool or sidelink BWP or sidelink carrier, and the configuration information of each set of CSI-RS resources includes at least one of the time domain information, frequency domain information, code domain information, resource density and power information of the CSI-RS. In this embodiment, for the number of ports with the largest number of configured CSI-RS resources, the number N' of CSI-RS resources configured under this number of ports, maps N' to binary bit information of a fourth bit number (M4) in length, and the M4bit information can uniquely indicate a specific set of side link CSI-RS resources among the available side link CSI-RS resources under the number of ports with the largest number of resources. The first UE transmits the side link CSI-RS in a certain slot, and carries the M4bit indication information in the control information of its control channel. As Figure 7 As shown, when the number of ports is 1, k1 CSI-RS resources are configured or preconfigured, when the number of ports is 2, k2 CSI-RS resources are configured or preconfigured, and when the number of ports is 4, k3 CSI-RS resources are configured or preconfigured. Taking the case where the number of ports with the largest number of configured resources is 4 as an example, that is, the maximum value among k1, k2, and k3 is k3. In this case, N'=k3, and N' is mapped to the first indication information of M4 bits. The first UE indicates the CSI-RS resource index when the number of ports is 4 in the SCI corresponding to the currently transmitted PSSCH containing CSI-RS. The resource position corresponding to the number of ports and the resource index can be indicated by the side link RRC signaling of the first UE or the RRC signaling of the cellular link, or determined according to a predefined rule.

[0073] In one embodiment, the first indication information includes port indication information of a fifth bit number and resource index indication information of a sixth bit number; the port indication information is set to indicate the number of ports corresponding to the CSI-RS, and the resource index indication information is set to indicate the CSI-RS resource index under the said number of ports; the resource location information corresponding to the CSI-RS resource index is determined by a predefined rule, or by the side link RRC signaling of the first user equipment, or by the RRC signaling of the cellular link.

[0074] Figure 8A schematic diagram of an embodiment of the present invention provides an indication of the number of ports and resource indexes corresponding to a sidelink channel state information reference signal. In this embodiment, the sidelink CSI-RS resources are configured or pre-configured based on a sidelink resource pool or a sidelink BWP or a sidelink carrier, and the configuration information of each set of CSI-RS resources includes at least one of the time domain information, frequency domain information, code domain information, resource density and power information of the CSI-RS. In this embodiment, for the number of CSI-RS resources N' configured for a certain number of ports, N' is mapped to binary bit information with a length of the first bit number (M5), and the M5bit information can uniquely indicate a specific sidelink CSI-RS resource among the available sidelink CSI-RS resources under the port number; and the type N1 of the number of ports configurable by the first UE is mapped to binary bit information with a length of the sixth bit number (M6), and the M6bit information can uniquely and definitely indicate the number of CSI-RS ports currently being sent. The first UE transmits the sidelink CSI-RS in a certain slot, and carries the indication information of M5bit and M6bit in the control information of its control channel. As Figure 8 As shown, when the number of ports is 1, k1 CSI-RS resources are configured or preconfigured, when the number of ports is 2, k2 CSI-RS resources are configured or preconfigured, and when the number of ports is 4, k3 CSI-RS resources are configured or preconfigured. Taking the number of ports as 4 as an example, in this case, N'=k3, N' is mapped to the first indication information of M5 bits, and the type of the number of ports (N1=3) is mapped to the first indication information of M6 bits. The first UE indicates the CSI-RS resource index when the number of ports is 4 in the SCI corresponding to the currently transmitted PSSCH containing CSI-RS, and the resource position corresponding to the resource index can be indicated by the side link RRC signaling of the first UE or the RRC signaling of the cellular link, or determined according to a predefined rule.

[0075] In this embodiment, the fifth number of bits of port indication information and the sixth number of bits of resource index indication information are arranged in a predetermined order. The first indication information has a total of M bits, which can be expressed as M=[M5M6], where M5 is the most significant bit (MSB) of M and M6 is the least significant bit (LSB) of M; or expressed as M=[M6M5], where M6 is the MSB of M and M5 is the LSB of M.

[0076] In the signal sending method of this embodiment, the first UE sends CSI-RS according to the configuration information, and indicates the first indication information to the second UE through SCI, thereby indicating the CSI-RS resource to the second UE, so that the second UE receives the reference signal according to the first indication information (it can also be combined with RRC signaling), realizes the measurement of channel state information, and improves the reliability of side link communication.

[0077] An embodiment of the present application also provides a signal receiving method, which is applied to a second UE, where the second UE is a user equipment that receives a CSI-RS and measures and provides feedback on a channel state.

[0078] Fig. 9 FIG. 1 is a flow chart of a signal receiving method provided by an embodiment. Fig. 9 As shown, the method includes S210 and S220.

[0079] In S210, indication information of a channel state information reference signal is received, where the indication information is set to indicate the number of ports and resource locations of the channel state information reference signal, and the indication information includes first indication information.

[0080] In S220, the channel state information reference signal is received according to the indication information.

[0081] In one embodiment, the indication information further includes at least one of the following: side link RRC signaling of the first user equipment, RRC signaling of the cellular link, and a predefined rule.

[0082] In one embodiment, the first indication information may be 1 bit, which is set to indicate the existence status of the CSI-RS; the indication information also includes at least one of a predefined rule, an edge link RRC signaling of the first UE, and an RRC signaling of a cellular link, which is set to indicate the number of ports and / or resource location information corresponding to the CSI-RS. The second UE may determine the resource location of the CSI-RS according to the indication information and receive the CSI-RS.

[0083] In one embodiment, the first indication information may be port indication information of the first bit number, which is set to indicate the port number corresponding to the CSI-RS; the indication information also includes at least one of a predefined rule, an edge link RRC signaling of the first UE, and an RRC signaling of the cellular link, which is set to indicate resource location information under the port number, and the second UE can determine the resource location of the CSI-RS and receive the CSI-RS according to the indication information.

[0084] In one embodiment, the first indication information may be resource index indication information of the second bit number, which is set to indicate the port number corresponding to the CSI-RS and the resource index under the port number; the indication information also includes at least one of a predefined rule, an edge link RRC signaling of the first UE, and an RRC signaling of the cellular link, which is set to indicate the resource location information corresponding to the resource index under the port number, and the second UE can determine the resource location of the CSI-RS and receive the CSI-RS according to the indication information.

[0085] In one embodiment, the first indication information may be resource index indication information of the third bit number, which is set to indicate the resource index under the set port number; the indication information also includes at least one of a predefined rule, an edge link RRC signaling of the first UE, and an RRC signaling of the cellular link, which is set to indicate the set port number and / or indicate the resource location information corresponding to the resource index under the set port number, and the second UE can determine the resource location of the CSI-RS and receive the CSI-RS according to the indication information.

[0086] In one embodiment, the first indication information may be resource index indication information of the fourth bit number, which is set to indicate the resource index under the number of ports with the largest number of configured CSI-RS resources; the indication information also includes at least one of a predefined rule, an edge link RRC signaling of the first UE, and an RRC signaling of the cellular link, which is set to indicate the number of ports and / or indicate resource location information corresponding to the resource index, and the second UE can determine the resource location of the CSI-RS and receive the CSI-RS according to the indication information.

[0087] In one embodiment, the first indication information may be port indication information of the fifth bit number and resource index indication information of the sixth bit number, which are respectively set to indicate the port number corresponding to the CSI-RS and the CSI-RS resource index under the port number; the indication information also includes at least one of the predefined rules, the side link RRC signaling of the first UE, and the RRC signaling of the cellular link, which is set to indicate the resource location information corresponding to the resource index, and the second UE can determine the resource location of the CSI-RS and receive the CSI-RS according to the indication information.

[0088] In the signal receiving method of this embodiment, the second UE determines the port number and resource location of the CSI-RS resource according to the indication information, thereby accurately receiving the CSI-RS, achieving measurement of the channel state, and improving the reliability of the side link communication.

[0089] An embodiment of the present application also provides an information feedback method, which is applied to a second UE, where the second UE is a user equipment that receives a CSI-RS and measures and provides feedback on a channel state.

[0090] Fig.10 FIG. 1 is a flow chart of an information feedback method provided by an embodiment. Fig.10 As shown, the method includes S310 and S320.

[0091] In S310, feedback resources for side link channel state information are determined according to the set time information.

[0092] In S320, side link channel state information is sent based on the feedback resource.

[0093] In this embodiment, the second UE determines the CSI feedback resource according to the set time information, for example, detecting the existing PSSCH grant information within the configured or preconfigured time window, and determining the CSI feedback resource according to the detected grant; or re-determining the feedback resource within the configured or preconfigured time window. The second UE feeds back the side link CSI to the first UE based on the determined feedback resource, thereby realizing the channel state measurement of the side link and improving the reliability of the side link communication.

[0094] In one embodiment, setting the time information includes: setting a time window; determining feedback resources for the side link channel state information according to the set time information, including: when there is authorization information for the physical side link shared channel PSSCH within the set time window, determining the feedback resources for the side link channel state information according to the authorization information; when there is no authorization information for the PSSCH within the set time window, reacquiring the feedback resources for the side link channel state information.

[0095] In this embodiment, after receiving the CSI-RS on the side link, the second UE determines whether there is valid Sidelink grant information within a configured or preconfigured time window. If there is at least one valid Sidelink grant, the second UE sends the Sidelink CSI data together with the data on the data channel of the side link according to the predefined rule rate matching, and indicates the CSI state in the control information, for example, indicating that the currently transmitted data channel only contains CSI, or only contains data, or contains both CSI and data. Among them, the grant can be a dynamic grant, a configured grant, or a semi-persistent scheduling (Semi-Persistent Scheduling, SPS) grant.

[0096] For example, when there is a dynamic grant from the network side within the set time window, the second UE multiplexes the CSI in the PSSCH indicated by a dynamic grant in the set time window for transmission; when there is a configured grant from the network side within the set time window, the second UE multiplexes the CSI in the PSSCH of a configured grant in the set time window for transmission; when the second UE is within coverage and there is no Sidelink grant within the set time window, the second UE can trigger SR or BSR to re-request CSI feedback resources; or when the second UE has a Sidelink grant from the MAC layer, the second UE multiplexes the CSI in the PSSCH indicated by the grant for transmission, and the grant can be from SPS or dynamically selected; or when the second UE does not have any Sidelink grant within the set time window, the second UE triggers autonomous resource selection, and then obtains feedback resource information sent by the sidelink CSI. When the second UE determines the Sidelink grant for CSI transmission, it transmits CSI in the PSSCH indicated by the grant information. The Sidelink CSI can be sent on the PSSCH with data on the Sidelink according to a predefined regular rate matching, or the CSI can be sent separately on the PSSCH.

[0097] In one embodiment, the start time of the time window is set to be the sum of the moment when the CSI-RS is received and a first time offset, and the end time of the time window is set to be the sum of the moment when the CSI-RS is received and a second time offset; the second time offset is greater than the first time offset; the second time offset and the first time offset are configured by the UE, or by the service node, or determined by a predefined rule.

[0098] In this embodiment, the set time window can be expressed as [n+offset1, n+offset2], where n is the moment when the second UE receives the side link CSI-RS sent by the first UE, offset1 is the first time offset, offset2 is the second time offset, and offset1 and offset2 are configured or preconfigured time window parameters. When offset1 is not configured, the value of offset1 is 1. The second UE determines whether there is grant information within the set time window.

[0099] In one embodiment, setting the time information includes: setting a moment; determining feedback resources of the side link channel state information according to the set time information, including: after the set moment, reacquiring feedback resources of the side link channel state information, wherein the set moment is the sum of the moment when the channel state information reference signal is received and a third time offset.

[0100] In this embodiment, the setting time can be expressed as n+offset3, where n is the time when the second UE receives the side link CSI-RS sent by the first UE, and offset3 is a third time offset, which is a configured or preconfigured time window parameter. After the setting time, the second UE re-determines the feedback resource of the CSI.

[0101] In one embodiment, reacquiring feedback resources for side link channel state information includes: triggering the setting of logical channel parameters and / or the establishment of logical channels for feedback resources, and obtaining authorization information for the physical layer to carry the feedback resources. In this embodiment, the MAC layer performs corresponding logical channel processing based on the logical channel parameters used for CSI feedback, but the CSI feedback carrier may not be packaged in the MAC service data unit (SDU). MAC sends the scheduling result to the physical layer and informs the scheduling information of the CSI feedback in the scheduling result. The physical layer maps the CSI feedback information to the RB used for scheduling based on the scheduling result.

[0102] In one embodiment, the reacquisition of feedback resources for side link channel state information includes: triggering the creation of a side link radio bearer and related parameters for the feedback resources, and acquiring authorization information for the feedback resources carried by the physical layer.

[0103] In one embodiment, the MAC layer uses a logical channel for CSI feedback or creates a SLRB (sidelink radio bearer) that carries CSI feedback, and assigns the priority, buffer size, MAC layer payload content and other parameters of the logical channel or SLRB according to certain rules, and the rule can be predefined or determined according to the feedback format of the CSI-RS. For example, for feedback format 1, the rule is to assign a priority of 0 and a buffer size of 5 bits; for feedback format 2, the rule is to assign a priority of 1 and a buffer size of 10 bits, etc.

[0104] In one embodiment, the reacquisition of feedback resources of the side link channel state information includes: triggering a media access control (MAC) layer scheduling of the feedback resources, and acquiring authorization information of the feedback resources carried by the physical layer.

[0105] In one embodiment, the re-acquiring feedback resources of the side link channel state information includes: triggering a scheduling request (SR) or a buffer status report (BSR), and acquiring feedback resources on the side link indicated by the service node.

[0106] In this embodiment, after a UE in mode 1 receives a CSI-RS on the side link, it triggers an SR or BSR report and requests the service node to send CSI resources, wherein the BSR may include information such as the logical channel number or logical channel group number corresponding to the predefined CSI data, the CSI buffer size (Buffer Size), priority, etc. The service node allocates resources for the second UE to send CSI on the side link, and the second UE indicates the CSI status in the control information, indicating that the data channel currently being sent contains only CSI, or only data, or both CSI and data.

[0107] In one embodiment, the feedback resources for reacquiring the side link channel state information include: selecting feedback resources based on the buffer size of the channel state measurement feedback data or a predefined number of resources; or, using resources indicated by the network side or the service node as the feedback resources; or, autonomously selecting resources as the feedback resources.

[0108] In this embodiment, after the second UE in mode 2 state receives the CSI-RS on the side link, the second UE can select the side link feedback resource according to the size of the CSI data buffer or the predefined number of resources, and send the CSI data on the selected Sidelink resource, and indicate the CSI state in the control information corresponding to the resource, indicating that the data currently sent only contains CSI, or only contains data, or contains both CSI and data; the second UE can also use the resources indicated by the network side or the service node as feedback resources; the second UE can also independently select resources, for example, the second UE triggers MAC layer resource scheduling and obtains resource information for physical layer CSI feedback, or the second UE triggers the setting of logical channel parameters and / or the establishment of logical channels for CSI feedback, and further obtains grant information for physical layer CSI feedback, or the second UE triggers the creation of (Sidelink Radio Bearer, SLRB) and related parameters for CSI feedback, and further obtains grant information for physical layer CSI feedback.

[0109] In one embodiment, the feedback resource of the side link channel state information is determined based on the authorization information, including: using a resource indicated by a side link dynamic authorization information already existing in the set time window as the feedback resource; or, using a resource indicated by an authorization information of a side link configuration already existing in the set time window as the feedback resource; or, using a resource indicated by a side link semi-statically existing in the set time window as the feedback resource.

[0110] In one embodiment, the method further includes: sending second indication information in the side link control information corresponding to the side link channel state information, wherein the second indication information is set to indicate the feedback state of the side link channel state information. In this embodiment, the second UE sends the second indication information on the PSCCH corresponding to the PSSCH where the fed-back CSI is located, indicating the transmission mode and transmission format of the CSI, for example, indicating whether the PSSCH currently sent by the second UE contains CSI, indicating the transmission format of the currently transmitted CSI, etc.

[0111] In one embodiment, the feedback status includes at least one of the following: a feedback method of the CSI; a feedback format of the CSI.

[0112] In one embodiment, the feedback method includes at least one of the following: the side link data currently being sent includes side link service data; the side link data currently being sent includes feedback information of the side link channel state measurement; the side link data currently being sent includes side link service data and feedback information of the side link channel state measurement.

[0113] In one embodiment, the feedback format includes at least one of the following: a multiplexing relationship between feedback information and PSSCH; a CSI modulation method; a CSI coding method; a CSI code rate; a CSI content; and a CSI-RS layer number.

[0114] In the information feedback method of this embodiment, the second UE determines the feedback resources of the CSI or re-acquires the feedback resources according to the set time information, and feeds back the side link CSI to the first UE based on the determined feedback resources, thereby realizing the channel state measurement of the side link and improving the reliability of the side link communication.

[0115] The embodiment of the present application also provides a signal sending device. Fig.11 FIG. 1 is a schematic diagram of the structure of a signal sending device provided by an embodiment. Fig.11 As shown, the signal sending device includes: a configuration information acquisition module 410 and a sending module 420.

[0116] A configuration information acquisition module 410 is configured to acquire configuration information of edge link reference signal resources;

[0117] The sending module 420 is configured to send a channel state information reference signal on the side link data channel according to the configuration information, and indicate the first indication information through the side link control information.

[0118] In one embodiment, the side link reference signal resource is configured based on a side link resource pool, a side link bandwidth, or a side link carrier;

[0119] The configuration information of the edge link reference signal resource is configured by the network side, or configured by the service node, or obtained according to pre-configuration information;

[0120] The configuration information of the edge link reference signal resource includes at least one of the following:

[0121] Channel state information reference signal time domain information, channel state information reference signal frequency domain information, channel state information reference signal code domain information, number of ports, resource density, and power information.

[0122] In one embodiment, the configuration information is defined by a resource pool, or is defined by a user equipment that sends a channel state information reference signal, or is defined by a service node, or is predefined by a protocol.

[0123] In one embodiment, the side link reference signal resources are at least one set, and each set of side link reference signal resources corresponds to a number of ports.

[0124] In one embodiment, the first indication information includes 1 bit of indication information, and the first indication information is set to indicate the existence state of the channel state information reference signal;

[0125] The number of ports corresponding to the channel state information reference signal is determined by the side link radio resource control RRC signaling of the first UE, or by the RRC signaling of the cellular link;

[0126] The resource location information corresponding to the channel state information reference signal is determined by a predefined rule, or by the side link RRC signaling of the first UE, or by the RRC signaling of the cellular link.

[0127] In one embodiment, the first indication information includes port indication information of a first number of bits, and the first indication information is set to indicate the number of ports corresponding to the channel state information reference signal;

[0128] The resource location information corresponding to the channel state information reference signal under the port number is determined by a predefined rule, or by the side link RRC signaling of the first UE, or by the RRC signaling of the cellular link.

[0129] In one embodiment, the first indication information includes resource index indication information of a second number of bits, and the first indication information is set to indicate the number of ports corresponding to the channel state information reference signal, and to indicate a channel state information reference signal resource index under the number of ports;

[0130] The resource location information corresponding to the channel state information reference signal resource index is determined by a predefined rule, or is determined by the side link RRC signaling of the first UE, or is determined by the RRC signaling of the cellular link.

[0131] In one embodiment, the number of bits of the first indication information includes a third number of bits of resource index indication information, and the first indication information is configured to indicate a channel state information reference signal resource index under a set number of ports;

[0132] The set port number is determined by the side link RRC signaling of the first UE, or by the RRC signaling of the cellular link;

[0133] The resource location information corresponding to the channel state information reference signal resource index is determined by a predefined rule, or is determined by the side link RRC signaling of the first UE, or is determined by the RRC signaling of the cellular link.

[0134] In one embodiment, the number of bits of the first indication information includes resource index indication information of a fourth number of bits, and the first indication information is set to indicate the channel state information reference signal resource index under the number of ports with the largest number of configured channel state information reference signal resources;

[0135] The channel state information reference signal resource index is associated with channel state information reference signal resources under other port numbers;

[0136] The number of ports is determined by RRC signaling of a side link of the first UE, or by RRC signaling of a cellular link;

[0137] The resource location information corresponding to the channel state information reference signal resource index is determined by a predefined rule, or is determined by the side link RRC signaling of the first UE, or is determined by the RRC signaling of the cellular link.

[0138] In one embodiment, the first indication information includes a fifth number of bits of port indication information and a sixth number of bits of resource index indication information;

[0139] The port indication information is set to indicate the number of ports corresponding to the channel state information reference signal, and the resource index indication information is set to indicate the channel state information reference signal resource index under the number of ports;

[0140] The resource location information corresponding to the channel state information reference signal resource index is determined by a predefined rule, or is determined by the side link RRC signaling of the first UE, or is determined by the RRC signaling of the cellular link.

[0141] The signal sending device of this embodiment obtains the configuration information of the side link reference signal resource through the configuration information acquisition module, sends the channel state information reference signal on the side link data channel according to the configuration information through the sending module, and indicates the first indication information through the side link control information, thereby indicating the CSI-RS resource to the second UE, so that the second UE receives the reference signal according to the first indication information (it can also be combined with RRC signaling), realizes the measurement of the channel state information, and improves the reliability of the side link communication.

[0142] The embodiment of the present application also provides a signal receiving device. Fig.12 FIG. 1 is a schematic diagram of the structure of a signal receiving device provided by an embodiment. Fig.12 As shown, the signal receiving device includes: an indication information receiving module 510 and a reference signal receiving module 520.

[0143] An indication information receiving module 510 is configured to receive indication information of a channel state information reference signal, wherein the indication information is configured to indicate the number of ports and resource locations of the channel state information reference signal, and the indication information includes first indication information;

[0144] The reference signal receiving module 520 is configured to receive the channel state information reference signal according to the indication information.

[0145] In one embodiment, the indication information further includes at least one of the following:

[0146] The side link RRC signaling of the first UE, the RRC signaling of the cellular link, and the predefined rules.

[0147] The signal receiving device of this embodiment receives indication information through the indication information receiving module, thereby determining the port number and resource location of the CSI-RS, and accurately receives the CSI-RS according to the indication information through the reference signal receiving module, thereby realizing the measurement of the channel state and improving the reliability of the side link communication.

[0148] The embodiment of the present application also provides an information feedback device. Fig.13 FIG. 1 is a schematic diagram of the structure of an information feedback device provided by an embodiment. Fig.13 As shown, the information feedback device includes: a feedback resource determination module 610 and a feedback module 620.

[0149] A feedback resource determination module 610, configured to determine feedback resources for side link channel state information according to set time information;

[0150] The feedback module 620 sends side link channel state information based on the feedback resource.

[0151] In one embodiment, the set time information includes: a set time window;

[0152] The feedback resource determination module 610 includes:

[0153] A first resource determination unit is configured to determine a feedback resource for the side link channel state information according to the authorization information when there is authorization information of the physical side link shared channel PSSCH within the set time window;

[0154] The second resource determination unit is configured to re-acquire feedback resources for the side link channel state information when there is no PSSCH authorization information within a set time window.

[0155] In one embodiment, the start time of the set time window is the sum of the moment when the channel state information reference signal is received and the first time offset, and the end time of the set time window is the sum of the moment when the channel state information reference signal is received and the second time offset;

[0156] The second time offset is greater than the first time offset;

[0157] The second time offset and the first time offset are configured by a user equipment, or configured by a service node, or determined by a predefined rule.

[0158] In one embodiment, the set time information includes: a set time;

[0159] The feedback resource determination module 610 includes:

[0160] The third resource determination unit is configured to reacquire the feedback resource of the side link channel state information after a set time, wherein the set time is the sum of the time when the channel state information reference signal is received and the third time offset.

[0161] In one embodiment, the reacquisition of feedback resources for the side link channel state information includes:

[0162] Triggering the setting of logical channel parameters and / or the establishment of a logical channel of the feedback resource, and obtaining authorization information for the physical layer to carry the feedback resource.

[0163] In one embodiment, the reacquisition of feedback resources for the side link channel state information includes:

[0164] Trigger the creation of the side link radio bearer and related parameters of the feedback resource, and obtain the authorization information of the feedback resource carried by the physical layer.

[0165] In one embodiment, the reacquisition of feedback resources for the side link channel state information includes:

[0166] Triggering the medium access control MAC layer scheduling of the feedback resource, and acquiring the authorization information of the feedback resource carried by the physical layer.

[0167] In one embodiment, the reacquisition of feedback resources for the side link channel state information includes:

[0168] Trigger a scheduling request or buffer status report, and obtain feedback resources on the edge link indicated by the service node.

[0169] In one embodiment, the reacquisition of feedback resources for the side link channel state information includes:

[0170] Selecting feedback resources according to a buffer size of channel state measurement feedback data or a predefined number of resources; or,

[0171] Using the resource indicated by the network side or the service node as the feedback resource; or,

[0172] A resource is autonomously selected as the feedback resource.

[0173] In one embodiment, the first resource determination unit is specifically configured to:

[0174] Using a resource indicated by an existing edge link dynamic authorization information within the set time window as the feedback resource; or,

[0175] Using the resource indicated by the authorization information of an existing edge link configuration within the set time window as the feedback resource; or,

[0176] A resource semi-statically indicated by an existing side link within the set time window is used as the feedback resource.

[0177] In one embodiment, the device further comprises:

[0178] The indication module is configured to send second indication information in the side link control information corresponding to the side link channel state information, and the second indication information is configured to indicate a feedback state of the side link channel state information.

[0179] In one embodiment, the feedback status includes at least one of the following:

[0180] Feedback method of the channel state information;

[0181] The feedback format of the channel state information.

[0182] In one embodiment, the feedback method includes at least one of the following:

[0183] The side link data currently being sent includes side link service data;

[0184] The side link data currently being sent includes feedback information of the side link channel state measurement;

[0185] The side link data currently being sent includes side link service data and feedback information of side link channel state measurement.

[0186] In one embodiment, the feedback format includes at least one of the following:

[0187] The multiplexing relationship between the feedback information and the PSSCH;

[0188] A modulation method of the channel state information;

[0189] A coding method of the channel state information;

[0190] A code rate of the channel state information;

[0191] Content of the channel state information;

[0192] The number of layers of the channel state information reference signal.

[0193] The information feedback device of this embodiment and the information feedback method of this embodiment, the second UE determines the feedback resources of CSI or re-acquires the feedback resources according to the set time information, and feeds back the side link CSI to the first UE based on the determined feedback resources, thereby realizing the channel state measurement of the side link and improving the reliability of the side link communication.

[0194] The embodiment of the present application also provides a communication node. The signal sending method can be executed by a signal sending device, which can be implemented by software and / or hardware and integrated in the communication node. The communication node is a first user equipment that sends a side link channel state information reference signal.

[0195] Fig.14 FIG. 1 is a schematic diagram of a communication node structure provided by an embodiment. Fig.14 As shown, a communication node provided in this embodiment includes: a processor 710 and a storage device 720. The processor in the communication node may be one or more, Fig.14 Taking a processor 710 as an example, the processor 710 and the storage device 720 in the device may be connected via a bus or other means. Fig.14 The example of connecting through bus is taken in the following.

[0196] The one or more programs are executed by the one or more processors 710, so that the one or more processors implement the signal sending method described in any of the above embodiments.

[0197] The storage device 720 in the communication node is a computer-readable storage medium and can be used to store one or more programs, which can be software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the signal sending method in the embodiment of the present invention (for example, the attached Fig.11 The modules in the signal sending device shown include: a configuration information acquisition module 410 and a sending module 420). The processor 710 executes various functional applications and data processing of the communication node by running the software programs, instructions and modules stored in the storage device 720, that is, implements the signal sending method in the above method embodiment.

[0198] The storage device 720 mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system and an application required for at least one function; the data storage area can store data created according to the use of the device (such as the configuration information, the first indication information, etc. in the above embodiment). In addition, the storage device 720 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the storage device 720 may further include a memory remotely arranged relative to the processor 710, and these remote memories may be connected to the communication node via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0199] Moreover, when one or more programs included in the above-mentioned communication node are executed by the one or more processors 710, the following operations are implemented: obtaining configuration information of the side link reference signal resources; sending a channel state information reference signal on the side link data channel according to the configuration information, and indicating the first indication information through the side link control information.

[0200] The communication node proposed in this embodiment and the signal sending method proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as executing the signal sending method.

[0201] The embodiment of the present application also provides a communication node. The signal receiving method can be performed by a signal receiving device, which can be implemented by software and / or hardware and integrated in the communication node; or, the information feedback method can be performed by an information feedback device, which can be implemented by software and / or hardware and integrated in the communication node. The communication node is a second user equipment that receives a side link channel state information reference signal and performs channel state feedback.

[0202] Fig.15 FIG. 1 is a schematic diagram of the structure of another communication node provided by an embodiment. Fig.15 As shown, a communication node provided in this embodiment includes: a processor 810 and a storage device 820. The processor in the communication node may be one or more, Fig.15 Taking a processor 810 as an example, the processor 810 and the storage device 820 in the device may be connected via a bus or other means. Fig.15 The example of connecting through bus is taken in the following.

[0203] The one or more programs are executed by the one or more processors 810, so that the one or more processors implement the signal receiving method or information feedback method described in any of the above embodiments.

[0204] The storage device 820 in the communication node is a computer-readable storage medium and can be used to store one or more programs, which can be software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the signal receiving method in the embodiment of the present invention (for example, the attached Fig.12 The modules in the signal receiving device shown include: an indication information receiving module 510 and a reference signal receiving module 520). The processor 810 executes various functional applications and data processing of the communication node by running the software programs, instructions and modules stored in the storage device 820, that is, implements the signal sending method in the above method embodiment.

[0205] The storage device 820 mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required for a function; the data storage area can store data created according to the use of the device, etc. (such as the indication information, the first indication information, etc. in the above-mentioned embodiment). In addition, the storage device 820 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the storage device 820 may further include a memory remotely arranged relative to the processor 810, and these remote memories may be connected to the communication node via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0206] The communication node proposed in this embodiment and the signal receiving method or information feedback method proposed in the above embodiments belong to the same inventive concept. The technical details not described in detail in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effects as executing the signal receiving method or information feedback method.

[0207] An embodiment of the present application also provides a storage medium containing computer executable instructions, which are used to execute a signal sending method, a signal receiving method, or an information feedback method when executed by a computer processor.

[0208] Through the above description of the implementation method, the technical personnel in the relevant field can understand that the present application can be implemented by means of software and general hardware, or by hardware. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including multiple instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute the method described in any embodiment of the present application.

[0209] The above description is merely an exemplary embodiment of the present application and is not intended to limit the protection scope of the present application.

[0210] The block diagram of any logic flow in the accompanying drawings of the present application can represent program steps, or can represent interconnected logic circuits, modules and functions, or can represent a combination of program steps and logic circuits, modules and functions. The computer program can be stored on a memory. The memory can have any type suitable for the local technical environment and can be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical memory device and system (digital versatile disc DVD or CD disc), etc. Computer-readable media may include non-transient storage media. The data processor can be any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (FGPA) and a processor based on a multi-core processor architecture.

[0211] By way of exemplary and non-limiting examples, a detailed description of exemplary embodiments of the present application has been provided above. However, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art when considered in conjunction with the accompanying drawings and claims, but will not depart from the scope of the present invention. Therefore, the proper scope of the present invention will be determined according to the claims.

Claims

1. An information feedback method, the method being applied to a first user equipment, characterized in that: include: Determine feedback resources for side link channel state information according to the set time information; Sending the side link channel state information to a second user equipment based on the feedback resource, wherein the set time information includes a set time window; and Determining the feedback resource of the side link channel state information according to the set time information includes: In a case where authorization information of a physical side link shared channel PSSCH exists within the set time window, determining a feedback resource of the side link channel state information according to the authorization information; and In the case where the authorization information of the PSSCH does not exist within the set time window, reacquiring the feedback resource of the side link channel state information includes: Trigger a scheduling request and obtain feedback resources on the edge link indicated by the service node.

2. The information feedback method according to claim 1, characterized in that: The start time of the set time window is the sum of the moment when the channel state information reference signal is received and the first time offset, and the end time of the set time window is the sum of the moment when the channel state information reference signal is received and the second time offset, wherein The second time offset is greater than the first time offset; The second time offset is configured by the second user equipment, and The first time offset is determined by a predefined rule.

3. An information feedback device, characterized in that: include: A processor and a memory, wherein the processor is configured to read instructions from the memory to implement the following operations: Determine feedback resources for side link channel state information according to the set time information; sending the side link channel state information to the user equipment based on the feedback resource, wherein the set time information includes a set time window; and When the feedback resource of the side link channel state information is determined according to the set time information, the processor is further configured to: In a case where authorization information of a physical side link shared channel PSSCH exists within the set time window, determining a feedback resource of the side link channel state information according to the authorization information; In the case where the authorization information of the PSSCH does not exist within the set time window, reacquiring feedback resources of the side link channel state information, When reacquiring the feedback resource of the side link channel state information, the processor is further configured to: Trigger a scheduling request and obtain feedback resources on the edge link indicated by the service node.

4. The information feedback device according to claim 3, characterized in that: The start time of the set time window is the sum of the moment when the channel state information reference signal is received and the first time offset, and the end time of the set time window is the sum of the moment when the channel state information reference signal is received and the second time offset; The second time offset is greater than the first time offset The second time offset is configured by the user equipment, and the first time offset is determined by a predefined rule.

5. A communication node, characterized in that: include: at least one processor; A storage device for storing at least one program; When the at least one program is executed by the at least one processor, the at least one processor is caused to: Determine feedback resources for side link channel state information according to the set time information; Sending the side link channel state information to a user equipment based on the feedback resource, wherein the set time information includes a set time window; When the feedback resource of the side link channel state information is determined according to the set time information, the processor is further configured to: In a case where authorization information of a physical side link shared channel PSSCH exists within the set time window, determining a feedback resource of the side link channel state information according to the authorization information; In the case where the authorization information of the PSSCH does not exist within the set time window, reacquiring feedback resources of the side link channel state information, When reacquiring the feedback resource of the side link channel state information, the processor is further configured to: Trigger a scheduling request and obtain feedback resources on the edge link indicated by the service node.

6. The communication node according to claim 5, characterized in that The start time of the set time window is the sum of the moment when the channel state information reference signal is received and the first time offset, and the end time of the set time window is the sum of the moment when the channel state information reference signal is received and the second time offset, wherein The second time offset is greater than the first time offset; The second time offset is configured by the user equipment, and The first time offset is determined by a predefined rule.

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