Csi measurement feedback method and apparatus, and storage medium

Abstract

The present disclosure relates to a CSI measurement feedback method and device in a V2X direct communication scenario and a storage medium, and belongs to the field of communication technology. The method comprises: a first device receiving CSI measurement reference signal resource pool configuration information sent by a base station; the first device sending CSI measurement configuration information to a second device in direct communication with the first device; and the first device receiving CSI measurement feedback information sent by the second device. The present disclosure provides a CSI measurement feedback method for a V2X direct communication scenario, so that information transmission can select a more suitable MCS, thereby improving spectral efficiency.

Description

[0001] This application is a divisional application of the invention patent application filed on November 29, 2018, with application number 201880002214.9 and invention title "CSI Measurement Feedback Method, Device and Storage Medium". Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a method, apparatus and storage medium for CSI (Channel State Information) measurement feedback in a V2X (Vehicle to Everything) direct communication scenario. Background Technology

[0003] In V2X technology, onboard equipment can communicate directly with other equipment (such as other onboard equipment, roadside infrastructure, etc.) via sidelinks. Direct communication is characterized by low latency and low overhead.

[0004] In the direct communication scenario of LTE (Long Term Evolution) V2X technology, unicast and multicast communication are not supported; only broadcast communication is supported. Because it is broadcast communication, the transmitting device does not need the receiving device to measure and provide feedback on CSI before sending information to the receiving device with which it is in direct communication.

[0005] For direct communication scenarios in 5G NR (New Radio) V2X technology, the emergence of new service requirements necessitates support for unicast and multicast communication. However, currently, there is no relevant CSI measurement feedback scheme for V2X direct communication scenarios. Summary of the Invention

[0006] This disclosure provides a CSI measurement feedback method, apparatus, and storage medium for V2X direct communication scenarios. The technical solution is as follows:

[0007] According to a first aspect of the present disclosure, a method for channel state information (CSI) measurement and feedback in a V2X direct communication scenario is provided, the method comprising:

[0008] The first device receives CSI measurement reference signal resource pool configuration information sent by the base station. The CSI measurement reference signal resource pool configuration information includes the identification information of n CSI measurement reference signal resources in the CSI measurement reference signal resource set, where n is a positive integer.

[0009] The first device sends CSI measurement configuration information to the second device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources out of the n CSI measurement reference signal resources, where m is a positive integer less than or equal to n.

[0010] The first device receives CSI measurement feedback information sent by the second device.

[0011] Optionally, the CSI measurement reference signal resource set includes at least one of the following CSI measurement reference signal resources: sidelink non-zero power channel state information reference signal (NZP CSI-RS) resource, sidelink zero power channel state information reference signal (ZP CSI-RS) resource, sidelink discovery reference signal (DRS) resource, sidelink synchronization signal block (SSB) resource, and sidelink demodulation reference signal (DMRS) resource.

[0012] Optionally, the CSI measurement reference signal resource pool configuration information may further include at least one of the following: the subcarrier spacing, cyclic prefix (CP), frequency domain position, time domain position, port, and quasi co-location indication corresponding to the CSI measurement reference signal resource.

[0013] Optionally, the method further includes:

[0014] The first device receives feedback mechanism configuration information sent by the base station, the feedback mechanism configuration information including configuration information of k CSI measurement feedback mechanisms, where k is a positive integer;

[0015] The first device sends the CSI measurement feedback mechanism to the second device.

[0016] Optionally, the k types of CSI measurement feedback mechanisms include at least one of the following: periodic measurement feedback mechanism, non-periodic measurement feedback mechanism, and semi-static measurement feedback mechanism.

[0017] Optionally, the configuration information of the CSI measurement feedback mechanism includes at least one of the following: time-domain configuration information, frequency-domain configuration information, and feedback content configuration information;

[0018] The time-domain configuration information is used to indicate the time for sending the CSI measurement feedback information, the frequency-domain configuration information is used to indicate the frequency-domain resources used for sending the CSI measurement feedback information, and the feedback content configuration information is used to indicate the content contained in the CSI measurement feedback information.

[0019] Optionally, the first device receives CSI measurement feedback information sent by the second device, including:

[0020] The first device receives the CSI measurement feedback information sent by the second device through the Physical Side Link Feedback Channel (PSFCH);

[0021] or,

[0022] The first device receives the CSI measurement feedback information sent by the second device through the Physical Side Link Shared Channel (PSSCH).

[0023] Optionally, the CSI measurement feedback information includes at least one of the following: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Signal-to-Interference-plus-Noise Ratio (L1-SINR), and identification information of the measured CSI measurement reference signal resource.

[0024] According to a second aspect of the present disclosure, a method for channel state information (CSI) measurement and feedback in a V2X direct communication scenario is provided, the method comprising:

[0025] The second device receives CSI measurement configuration information sent by the first device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources in the CSI measurement reference signal resource set configured by the base station, where m is a positive integer.

[0026] The second device sends CSI measurement feedback information to the first device based on the CSI measurement configuration information.

[0027] Optionally, the method further includes:

[0028] The second device receives the CSI measurement feedback mechanism sent by the first device or the base station;

[0029] The second device sends CSI measurement feedback information to the first device according to the CSI measurement configuration information, including:

[0030] The second device sends the CSI measurement feedback information to the first device according to the CSI measurement configuration information and the CSI measurement feedback mechanism.

[0031] According to a third aspect of the present disclosure, a channel state information (CSI) measurement and feedback device for a V2X direct communication scenario is provided, applied in a first device, the device comprising:

[0032] The configuration information receiving module is configured to receive CSI measurement reference signal resource pool configuration information sent by the base station. The CSI measurement reference signal resource pool configuration information includes the identification information of n CSI measurement reference signal resources in the CSI measurement reference signal resource set, where n is a positive integer.

[0033] The configuration information sending module is configured to send CSI measurement configuration information to a second device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources out of the n CSI measurement reference signal resources, where m is a positive integer less than or equal to n.

[0034] The feedback information receiving module is configured to receive CSI measurement feedback information sent by the second device.

[0035] Optionally, the CSI measurement reference signal resource set includes at least one of the following CSI measurement reference signal resources: sidelink non-zero power channel state information reference signal (NZP CSI-RS) resource, sidelink zero power channel state information reference signal (ZP CSI-RS) resource, sidelink discovery reference signal (DRS) resource, sidelink synchronization signal block (SSB) resource, and sidelink demodulation reference signal (DMRS) resource.

[0036] Optionally, the CSI measurement reference signal resource pool configuration information may further include at least one of the following: the subcarrier spacing, cyclic prefix (CP), frequency domain position, time domain position, port, and quasi co-location indication corresponding to the CSI measurement reference signal resource.

[0037] Optionally, the configuration information receiving module is further configured to receive feedback mechanism configuration information sent by the base station, wherein the feedback mechanism configuration information includes configuration information for k CSI measurement feedback mechanisms, where k is a positive integer;

[0038] The configuration information sending module is also configured to send the CSI measurement feedback mechanism to the second device.

[0039] Optionally, the k types of CSI measurement feedback mechanisms include at least one of the following: periodic measurement feedback mechanism, non-periodic measurement feedback mechanism, and semi-static measurement feedback mechanism.

[0040] Optionally, the configuration information of the CSI measurement feedback mechanism includes at least one of the following: time-domain configuration information, frequency-domain configuration information, and feedback content configuration information;

[0041] The time-domain configuration information is used to indicate the time for sending the CSI measurement feedback information, the frequency-domain configuration information is used to indicate the frequency-domain resources used for sending the CSI measurement feedback information, and the feedback content configuration information is used to indicate the content contained in the CSI measurement feedback information.

[0042] Optionally, the feedback information receiving module is configured as follows:

[0043] Receive the CSI measurement feedback information sent by the second device through the Physical Side Link Feedback Channel (PSFCH);

[0044] or,

[0045] Receive the CSI measurement feedback information sent by the second device through the Physical Side Link Shared Channel (PSSCH).

[0046] Optionally, the CSI measurement feedback information includes at least one of the following: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), Layer 1 Reference Signal Received Power (L1-RSRP), Layer 1 Signal-to-Interference-plus-Noise Ratio (L1-SINR), and identification information of the measured CSI measurement reference signal resource.

[0047] According to a fourth aspect of the present disclosure, a channel state information (CSI) measurement and feedback device for a V2X direct communication scenario is provided, applied in a second device, the device comprising:

[0048] The configuration information receiving module is configured to receive CSI measurement configuration information sent by a first device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources in the CSI measurement reference signal resource set configured by the base station, where m is a positive integer.

[0049] The feedback information sending module is configured to send CSI measurement feedback information to the first device according to the CSI measurement configuration information.

[0050] Optionally, the configuration information receiving module is further configured to receive CSI measurement feedback mechanism sent by the first device or the base station;

[0051] The feedback information sending module is further configured to send the CSI measurement feedback information to the first device according to the CSI measurement configuration information and the CSI measurement feedback mechanism.

[0052] According to a fifth aspect of the present disclosure, a channel state information (CSI) measurement and feedback device for a V2X direct communication scenario is provided, applied in a first device, the device comprising:

[0053] processor;

[0054] Memory for storing the executable instructions of the processor;

[0055] The processor is configured as follows:

[0056] The system receives CSI measurement reference signal resource pool configuration information sent by the base station. The CSI measurement reference signal resource pool configuration information includes the identification information of n CSI measurement reference signal resources in the CSI measurement reference signal resource set, where n is a positive integer.

[0057] Send CSI measurement configuration information to a second device with which it has direct communication, wherein the CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources out of the n CSI measurement reference signal resources, where m is a positive integer less than or equal to n;

[0058] Receive CSI measurement feedback information sent by the second device.

[0059] According to a sixth aspect of the present disclosure, a channel state information (CSI) measurement and feedback device for a V2X direct communication scenario is provided, applied in a second device, the device comprising:

[0060] processor;

[0061] Memory for storing the executable instructions of the processor;

[0062] The processor is configured as follows:

[0063] The base station receives CSI measurement configuration information sent by a first device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources in the CSI measurement reference signal resource set configured by the base station, where m is a positive integer.

[0064] Based on the CSI measurement configuration information, CSI measurement feedback information is sent to the first device.

[0065] According to a seventh aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the method as described in the first aspect, or implements the steps of the method as described in the second aspect.

[0066] The technical solutions provided in this disclosure can include the following beneficial effects:

[0067] By configuring a CSI measurement reference signal resource set for a first device in V2X direct communication through a base station, the first device sends CSI measurement configuration information to a second device with which it directly communicates. After the second device performs CSI measurement based on the CSI measurement configuration information, it sends CSI measurement feedback information back to the first device. In this way, a CSI measurement feedback method is provided for V2X direct communication scenarios, which enables information transmission to select a more suitable MCS and improve spectrum efficiency.

[0068] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0069] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0070] Figure 1 This is a schematic diagram of a network architecture that may be applicable to embodiments of this disclosure;

[0071] Figure 2 This is a flowchart illustrating a CSI measurement feedback method in a V2X direct communication scenario according to an exemplary embodiment;

[0072] Figure 3 This is a flowchart illustrating a CSI measurement feedback method in a V2X direct communication scenario according to another exemplary embodiment;

[0073] Figure 4 This is a block diagram illustrating a CSI measurement feedback device in a V2X direct communication scenario according to an exemplary embodiment;

[0074] Figure 5 This is a block diagram illustrating a CSI measurement feedback device in a V2X direct communication scenario according to another exemplary embodiment;

[0075] Figure 6 This is a schematic diagram of the structure of a device in a V2X direct communication scenario, according to an exemplary embodiment. Detailed Implementation

[0076] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0077] The network architecture and business scenarios described in this disclosure are intended to more clearly illustrate the technical solutions of this disclosure and do not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0078] Figure 1A schematic diagram of a network architecture that may be applicable to embodiments of this disclosure is shown. This network architecture can be a C-V2X system architecture. Here, C stands for Cellular, and a C-V2X system is a vehicle-mounted wireless communication system evolved from cellular network communication systems such as 3G, 4G, or 5G. This network architecture may include: a core network 11, an access network 12, a terminal 13, and a vehicle 14.

[0079] Core network 11 includes several core network devices. The main functions of these core network devices are to provide user connectivity, manage users, and carry out service delivery, serving as the interface to external networks. For example, the core network of an LTE (Long Term Evolution) system may include devices such as the MME (Mobility Management Entity), S-GW (Serving Gateway), and P-GW (PDN Gateway). The core network of a 5G NR system may include devices such as the AMF (Access and Mobility Management Function), UPF (User Plane Function), and SMF (Session Management Function).

[0080] Access network 12 includes several access network devices 120. Access network devices 120 communicate with core network devices 110 via some air interface technology, such as the S1 interface in an LTE system or the NG interface in a 5G NR system. Access network devices 120 can be base stations (BS), which are devices deployed in the access network to provide wireless communication functions for terminals. Base stations can include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems employing different wireless access technologies, the names of devices with base station functions may differ; for example, in an LTE system, they are called eNodeB or eNB; in a 5G NR system, they are called gNodeB or gNB. As communication technologies evolve, the name "base station" may change. For ease of description, in this embodiment, the devices providing wireless communication functions for terminals are collectively referred to as access network devices.

[0081] Terminal 13 may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile station (MS), terminal device, etc. For ease of description, the devices mentioned above are collectively referred to as terminals. Access network device 120 and terminal 13 communicate with each other through some air interface technology, such as the Uu interface.

[0082] Vehicle 14 can be an autonomous vehicle or a non-autonomous vehicle. Vehicle 14 is equipped with an onboard device that enables communication with other vehicles, terminal 13, or other devices, such as an RSU (Road Side Unit). This onboard device may also be called an onboard terminal, onboard communication device, or other names, and this disclosure does not limit this. The onboard device can be a device integrated into a Telematics Box (T-BOX) or a device separate from the vehicle body. Furthermore, the onboard device can be installed in vehicle 14 before or after it leaves the factory.

[0083] The onboard equipment of vehicle 14 can communicate with other devices (such as other onboard equipment, terminal 13, RSU, etc.) through a direct communication interface (such as the PC5 interface). Accordingly, this communication link established based on the direct communication interface can be called a direct link or a sidelink. Furthermore, the onboard equipment of vehicle 14 can also communicate with other devices through access network 12 and core network 11, utilizing the existing communication link between terminal 13 and access network equipment 120 in the cellular network. Compared with communication based on the Uu interface, communication based on the direct communication interface has the advantages of shorter latency and lower overhead, making it suitable for communication between onboard equipment and other geographically proximate peripheral devices.

[0084] The above Figure 1 The network architecture shown can realize V2X service scenarios. The network architecture may also include devices such as RSU, V2X application server, and V2X control function node, but this disclosure does not limit this. In addition, the technical solutions described in this disclosure are applicable to 5G NR systems and subsequent evolution systems of 5G NR systems.

[0085] In this embodiment of the disclosure, a CSI measurement feedback method is provided for the direct communication scenario in the above-mentioned V2X service scenario, so that information transmission can select a more suitable MCS (Modulation and Coding Scheme) and improve spectrum efficiency.

[0086] In this embodiment, the first device and the second device are two ends of a V2X service scenario that perform direct communication. The first device and the second device can establish a side link through a direct communication interface (such as a PC5 interface), and then exchange user plane data and control plane signaling through this side link. For example, the first device could be... Figure 1 The network architecture shown includes vehicle 14's onboard equipment. The second device can be onboard equipment from other vehicles, or it can be terminal 13 or RSU, etc. For example, the first device could be... Figure 1 In the network architecture shown, terminal 13 and the second device can be other terminals, or vehicle-mounted devices or RSUs in vehicle 14. In some embodiments, the same device (such as the same vehicle-mounted device or the same terminal) can be used as the first device in some scenarios and as the second device in others.

[0087] The technical solutions disclosed herein will now be described and illustrated through several exemplary embodiments.

[0088] Figure 2 This is a flowchart illustrating a CSI measurement feedback method in a V2X direct communication scenario according to an exemplary embodiment. The method can be applied to... Figure 1 In the network architecture shown, the method may include the following steps (201-203).

[0089] In step 201, the first device receives the CSI measurement reference signal resource pool configuration information sent by the base station.

[0090] The base station predefines a resource pool for the CSI measurement reference signal resource set and sends this CSI measurement reference signal resource set to the device performing V2X direct communication via the CSI measurement reference signal resource pool configuration information. The CSI measurement reference signal resource set includes n CSI measurement reference signal resources, where n is a positive integer. The CSI measurement reference signal resource pool configuration information includes the identification information of the n CSI measurement reference signal resources in the CSI measurement reference signal resource set. The identification information of each CSI measurement reference signal resource is used to uniquely identify that resource; different resources have different identification information.

[0091] In this embodiment of the disclosure, CSI measurement reference signal resources refer to reference signal resources used for measuring CSI. Optionally, the set of CSI measurement reference signal resources includes at least one of the following CSI measurement reference signal resources: sidelink NZPCSI-RS (sidelink Non Zero Power Channel State Information-Reference Signal) resources, sidelink ZP CSI-RS (sidelink Zero Power Channel State Information-Reference Signal) resources, sidelink DRS (sidelink Discovery Reference Signal) resources, sidelink SSB (sidelink Synchronization Signal Block) resources, and sidelink DMRS (sidelink Domulation Reference Signal).

[0092] The aforementioned sidelink DRS resources include at least one sidelink PSS (sidelink primary synchronized signal), at least one sidelink SSS (sidelink secondary synchronized signal), and at least one sidelink PBCH (sidelink physical broadcast channel). The aforementioned sidelink SSB resources may also include at least one sidelink PSS, at least one sidelink SSS, and at least one sidelink PBCH. An SSB can be referred to as an SS / PBCH block.

[0093] It should be noted that the term "sidelink" as used in this article can also be referred to as "V2X". Adding "sidelink" before an object indicates that the object is used for sidelinks or for V2X. For example, "sidelink NZP CSI-RS resource" indicates an NZP CSI-RS resource used for sidelinks or for V2X. Similarly, "sidelink SSB resource" indicates an SSB resource used for sidelinks or for V2X.

[0094] Furthermore, the resource pool of the CSI measurement reference signal resource set is similar to the resource pool of PSSCH (Pysical Sidelink Shared Channel), PSCCH (Pysical Sidelink Control Channel), PSDCH (Pysical Sidelink Discovery Channel), or sidelink DMRS, and the resource pool of the CSI measurement reference signal resource set may overlap with or not overlap with the above-mentioned other resource pools. This disclosure does not limit this aspect.

[0095] Optionally, the CSI measurement reference signal resource pool configuration information may also include at least one of the following: the subcarrier spacing, CP (cyclic prefix), frequency domain location, time domain location, Port, and Quasi co-location indication corresponding to the CSI measurement reference signal resource.

[0096] The frequency domain location corresponding to the CSI measurement reference signal resource refers to the frequency domain location occupied by the CSI measurement reference signal resource. For example, the size and location of a bandwidth can be given, along with which RB (Resource Block), RE (Resource Element), or subcarrier occupies that bandwidth.

[0097] The time-domain location corresponding to the CSI measurement reference signal resource refers to the time-domain location occupied by the CSI measurement reference signal resource, including time-domain location information such as period, offset, slot, mini-slot, and symbol.

[0098] The port corresponding to the CSI measurement reference signal resource refers to the antenna port on which the transmitting end sends the CSI measurement reference signal resource. If the CSI measurement reference signal resource pool configuration information includes the port configuration corresponding to the CSI measurement reference signal resource, a lower configuration can be included, considering that the capabilities of each transmitting end are different. If the CSI measurement reference signal resource pool configuration information does not include the port configuration corresponding to the CSI measurement reference signal resource, the transmitting end can dynamically indicate this to the receiving end, for example, by using SCI (Sidelink Control Information) signaling in PSCCH.

[0099] The Quasi co-location indication corresponding to the CSI measurement reference signal resource is used to indicate that when measuring the CSI on this resource, the same receiving beam as the measurement reference signal in the indication should be used to receive and measure. The indication may include the sidelink RS ID of type D.

[0100] In step 202, the first device sends CSI measurement configuration information to the second device with which it has direct communication.

[0101] After the first device obtains the CSI measurement reference signal resource set configured by the base station, it can select m CSI measurement reference signal resources from the n CSI measurement reference signal resources included in the resource set for the second device that communicates directly with it to perform CSI measurements, where m is a positive integer less than or equal to n.

[0102] Optionally, the first device sends CSI measurement configuration information to the second device via PSCCH. For example, the first device sends a first SCI signaling message to the second device via PSCCH, which includes the CSI measurement configuration information. Optionally, the first SCI signaling message also includes the identification information of the sending end (i.e., the first device) and / or the identification information of the receiving end (i.e., the second device).

[0103] The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources out of the aforementioned n CSI measurement reference signal resources. Optionally, the CSI measurement configuration information also includes at least one of the following: the subcarrier spacing, CP, frequency domain position, time domain position, port, and Quasi co-location indication corresponding to the CSI measurement reference signal resource.

[0104] In addition, the format of SCI signaling used to send CSI measurement configuration information can be distinguished from the format of SCI signaling used to indicate the resources used for data transmission.

[0105] In step 203, the second device sends CSI measurement feedback information to the first device according to the CSI measurement configuration information.

[0106] The second device performs CSI measurements according to the CSI measurement configuration information, and then sends the measurement results to the first device via CSI measurement feedback information. Correspondingly, the first device receives the CSI measurement feedback information sent by the second device.

[0107] Optionally, the CSI measurement feedback information includes at least one of the following: CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), L1-RSRP (Layer 1-Reference Signal Received Power), L1-SINR (Layer 1-Signal to Interference and Noise Ratio), and identification information of the measured CSI measurement reference signal resource.

[0108] For example, if the transmission and reception between the first and second devices are not based on beam, the CSI measurement feedback information may include at least one of CQI, PMI, and RI, and optionally also include identification information of the measured CSI measurement reference signal resource, such as sidelink NZP CSI-RS ID, sidelink ZP CSI-RS ID, sidelink DRSID, sidelink SSB ID, or sidelink DMRS ID.

[0109] For example, if the first and second devices transmit and receive based on beams, and the purpose of the measurement is for beam selection, the CSI measurement feedback information may include L1-RSRP and / or L1-RSRP, as well as identification information of the measured CSI measurement reference signal resource, such as sidelink NZP CSI-RS ID, sidelink ZP CSI-RSID, sidelink DRS ID, sidelink SSB ID, or sidelink DMRS ID.

[0110] In addition, the second device can send CSI measurement feedback information to the first device through PSFCH (Pysical Sidelink Feedback Channel), or it can send CSI measurement feedback information to the first device through PSSCH.

[0111] Optionally, the second device sends a second SCI signaling message to the first device, the second SCI signaling message including CSI measurement feedback information. Optionally, the second SCI signaling message also includes identification information of the sending end (i.e., the second device) and / or identification information of the receiving end (i.e., the first device).

[0112] In summary, the technical solution provided in this disclosure involves configuring a CSI measurement reference signal resource set for a first device in V2X direct communication via a base station. The first device then sends CSI measurement configuration information to a second device with which it is directly communicating. After performing CSI measurement based on the CSI measurement configuration information, the second device sends CSI measurement feedback information back to the first device. This provides a CSI measurement feedback method for V2X direct communication scenarios, enabling information transmission to select a more suitable MCS and improving spectrum efficiency.

[0113] Figure 3 This is a flowchart illustrating a CSI measurement feedback method in a V2X direct communication scenario according to another exemplary embodiment. This method can be applied to... Figure 1 In the network architecture shown, the method may include the following steps (301-303).

[0114] In step 301, the first device receives the CSI measurement reference signal resource pool configuration information and feedback mechanism configuration information sent by the base station.

[0115] For information on CSI measurement reference signal resource pool configuration, please refer to [link / reference]. Figure 2 This embodiment will not be described in detail here.

[0116] In this embodiment, the base station also predefines multiple CSI measurement feedback mechanisms and sends these mechanisms to the device performing V2X direct communication via feedback mechanism configuration information. For example, the base station can send CSI measurement reference signal resource pool configuration information and feedback mechanism configuration information to the first device via system information. Furthermore, the CSI measurement reference signal resource pool configuration information and feedback mechanism configuration information can be sent in the same system message or in two different system messages; this embodiment does not limit this.

[0117] The feedback mechanism configuration information includes configuration information for k CSI measurement feedback mechanisms, where k is a positive integer. The CSI measurement feedback mechanism is used to indicate the method of performing CSI measurements and feedback. Optionally, the aforementioned k CSI measurement feedback mechanisms include at least one of the following: a periodic measurement feedback mechanism, a non-periodic measurement feedback mechanism, and a semi-static measurement feedback mechanism.

[0118] Periodic measurement feedback mechanisms refer to CSI measurements and feedback performed periodically. Non-periodic measurement feedback mechanisms refer to CSI measurements and feedback performed non-periodically; for example, a device performs a CSI measurement and feedback after receiving a CSI feedback trigger signal from another device. Semi-static measurement feedback mechanisms refer to a device starting CSI measurements and feedback after receiving a CSI feedback trigger signal from another device, and stopping CSI measurements and feedback when a certain number of measurements have been performed or when a stop feedback trigger signal is received from another device.

[0119] Optionally, the configuration information of the CSI measurement feedback mechanism includes at least one of the following: time-domain configuration information, frequency-domain configuration information, and feedback content configuration information.

[0120] Time-domain configuration information is used to indicate the time when CSI measurement feedback information is sent. For example, for a periodic measurement feedback mechanism, its time-domain configuration information may include information such as period, start time offset, frame, subframe, slot, mini-slot, and symbol. For an aperiodic measurement feedback mechanism, since only one CSI measurement and feedback is performed, its time-domain configuration information may include the feedback time, such as indicating the specific feedback time through information like frame, subframe, slot, mini-slot, and symbol, or providing an offset, the value of which, plus the time of the CSI feedback trigger signaling, is the feedback time. For example, for a semi-static measurement feedback mechanism, its time-domain configuration information may include the start feedback time and period, and optionally also the stop feedback time or feedback duration. The start and stop feedback times can be clearly indicated by information such as frame, subframe, slot, mini-slot, and symbol. The feedback duration can indicate the number of time units (e.g., frame, subframe, slot, mini-slot, symbol) in which feedback occurs. Furthermore, the time of the first CSI measurement feedback can also be calculated by adding a time interval to the transmission time of the CSI feedback trigger signaling. This time interval can be predefined in a standard or protocol, pre-configured by the base station, or sent from the first device to the second device; this disclosure does not limit this. Additionally, the CSI feedback trigger signaling is sent from the sending end to the receiving end to instruct the receiving end to perform CSI measurement and feedback. This CSI feedback trigger signaling can be SCI signaling. In addition, for the semi-static measurement feedback mechanism, the stop feedback time or feedback duration described above can be carried in the configuration information of the CSI measurement feedback mechanism or sent through another separate signaling. This disclosure embodiment does not limit this.

[0121] Frequency domain configuration information is used to indicate the frequency domain resources used to send CSI measurement feedback information. Since CSI measurement feedback information can be sent via PSFCH or PSSCH, this frequency domain resource can be the frequency domain resource allocated for PSFCH or PSSCH.

[0122] The feedback content configuration information is used to indicate the content included in the CSI measurement feedback information. This may include at least one of the following: CQI, PMI, RI, L1-RSRP, L1-SINR, and identification information of the CSI measurement reference signal resource being measured.

[0123] In step 302, the first device sends CSI measurement configuration information and CSI measurement feedback mechanism to the second device with which it has direct communication.

[0124] For information on CSI measurement configuration, please refer to [link / reference]. Figure 2 This embodiment will not be described in detail here.

[0125] In this embodiment, in addition to sending CSI measurement configuration information to the second device, the first device also sends the CSI measurement feedback mechanism to the second device. For example, the first device can select one CSI measurement feedback mechanism from k CSI measurement feedback mechanisms configured by the base station, and inform the second device of the selected CSI measurement feedback mechanism and its configuration information.

[0126] In addition, CSI measurement configuration information and CSI measurement feedback mechanism can be sent in the same message or in two different messages, and this disclosure does not limit this.

[0127] In step 303, the second device sends CSI measurement feedback information to the first device according to the CSI measurement configuration information and the CSI measurement feedback mechanism.

[0128] The second device determines on which CSI measurement reference signal resources to perform CSI measurement based on the CSI measurement configuration information; and, based on the CSI measurement feedback mechanism, the second device determines the method of performing CSI measurement and feedback, and performs CSI measurement accordingly to obtain measurement results, and sends the measurement results to the first device through CSI measurement feedback information.

[0129] It should be noted that in this embodiment, the description only focuses on the example of the second device obtaining the CSI measurement feedback mechanism from the first device. In some other possible embodiments, the second device may also obtain the CSI measurement feedback mechanism from the base station. For example, the second device may receive feedback mechanism configuration information sent by the base station and determine the CSI measurement feedback mechanism to be used when providing CSI measurement feedback to the first device.

[0130] In summary, the technical solutions provided in this disclosure also predefine multiple CSI measurement feedback mechanisms so that devices in V2X direct communication can select the appropriate CSI measurement feedback mechanism for CSI measurement and feedback according to actual needs.

[0131] It should be noted that in the above method embodiments, the technical solution of this disclosure is only described from the perspective of the interaction between the first device and the second device. The steps related to the first device can be implemented independently as a CSI measurement feedback method in the V2X direct communication scenario on the first device side, and the steps related to the second device can be implemented independently as a CSI measurement feedback method in the V2X direct communication scenario on the second device side.

[0132] The following are embodiments of the apparatus disclosed herein, which can be used to execute embodiments of the method disclosed herein. For details not disclosed in the apparatus embodiments of this disclosure, please refer to the embodiments of the method disclosed herein.

[0133] Figure 4 This is a block diagram illustrating a CSI measurement feedback device in a V2X direct communication scenario according to an exemplary embodiment. The device has the functionality to implement the method example described above on the first device side; this functionality can be implemented in hardware or by hardware executing corresponding software. The device 400 may include: a configuration information receiving module 410, a configuration information sending module 420, and a feedback information receiving module 430.

[0134] The configuration information receiving module 410 is configured to receive CSI measurement reference signal resource pool configuration information sent by the base station. The CSI measurement reference signal resource pool configuration information includes the identification information of n CSI measurement reference signal resources in the CSI measurement reference signal resource set, where n is a positive integer.

[0135] The configuration information sending module 420 is configured to send CSI measurement configuration information to a second device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources out of the n CSI measurement reference signal resources, where m is a positive integer less than or equal to n.

[0136] The feedback information receiving module 430 is configured to receive CSI measurement feedback information sent by the second device.

[0137] In summary, the technical solution provided in this disclosure involves configuring a CSI measurement reference signal resource set for a first device in V2X direct communication via a base station. The first device then sends CSI measurement configuration information to a second device with which it is directly communicating. After performing CSI measurement based on the CSI measurement configuration information, the second device sends CSI measurement feedback information back to the first device. This provides a CSI measurement feedback method for V2X direct communication scenarios, enabling information transmission to select a more suitable MCS and improving spectrum efficiency.

[0138] Optionally, the CSI measurement reference signal resource set includes at least one of the following CSI measurement reference signal resources: sidelink NZP CSI-RS resource, sidelink ZP CSI-RS resource, sidelink DRS resource, sidelink SSB resource, or sidelink DMRS resource.

[0139] Optionally, the CSI measurement reference signal resource pool configuration information may further include at least one of the following: the subcarrier spacing, CP, frequency domain position, time domain position, Port, and Quasi co-location indication corresponding to the CSI measurement reference signal resource.

[0140] Optionally, the configuration information receiving module 410 is further configured to receive feedback mechanism configuration information sent by the base station, wherein the feedback mechanism configuration information includes configuration information for k CSI measurement feedback mechanisms, where k is a positive integer;

[0141] The configuration information sending module 420 is also configured to send the CSI measurement feedback mechanism to the second device.

[0142] Optionally, the k types of CSI measurement feedback mechanisms include at least one of the following: periodic measurement feedback mechanism, non-periodic measurement feedback mechanism, and semi-static measurement feedback mechanism.

[0143] Optionally, the configuration information of the CSI measurement feedback mechanism includes at least one of the following: time-domain configuration information, frequency-domain configuration information, and feedback content configuration information;

[0144] The time-domain configuration information is used to indicate the time for sending the CSI measurement feedback information, the frequency-domain configuration information is used to indicate the frequency-domain resources used for sending the CSI measurement feedback information, and the feedback content configuration information is used to indicate the content contained in the CSI measurement feedback information.

[0145] Optionally, the feedback information receiving module 430 is configured to:

[0146] Receive the CSI measurement feedback information sent by the second device via PSFCH;

[0147] or,

[0148] Receive the CSI measurement feedback information sent by the second device via PSSCH.

[0149] Optionally, the CSI measurement feedback information includes at least one of the following: CQI, PMI, RI, L1-RSRP, L1-SINR, and identification information of the measured CSI measurement reference signal resource.

[0150] Figure 5 This is a block diagram illustrating a CSI measurement feedback device in a V2X direct communication scenario according to another exemplary embodiment. The device has the functionality to implement the method example described above on the second device side; this functionality can be implemented in hardware or by hardware executing corresponding software. The device 500 may include a configuration information receiving module 510 and a feedback information sending module 520.

[0151] The configuration information receiving module 510 is configured to receive CSI measurement configuration information sent by a first device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources in the CSI measurement reference signal resource set configured by the base station, where m is a positive integer.

[0152] The feedback information sending module 520 is configured to send CSI measurement feedback information to the first device according to the CSI measurement configuration information.

[0153] In summary, the technical solution provided in this disclosure involves configuring a CSI measurement reference signal resource set for a first device in V2X direct communication via a base station. The first device then sends CSI measurement configuration information to a second device with which it is directly communicating. After performing CSI measurement based on the CSI measurement configuration information, the second device sends CSI measurement feedback information back to the first device. This provides a CSI measurement feedback method for V2X direct communication scenarios, enabling information transmission to select a more suitable MCS and improving spectrum efficiency.

[0154] Optionally, the configuration information receiving module 510 is further configured to receive CSI measurement feedback mechanism sent by the first device or the base station;

[0155] The feedback information sending module 520 is further configured to send the CSI measurement feedback information to the first device according to the CSI measurement configuration information and the CSI measurement feedback mechanism.

[0156] It should be noted that the device provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0157] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0158] An exemplary embodiment of this disclosure also provides a CSI measurement feedback device for a V2X direct communication scenario, capable of implementing the CSI measurement feedback method for a V2X direct communication scenario provided in this disclosure. The device can be the first device described above, or it can be disposed within the first device. The device includes: a processor, and a memory for storing executable instructions of the processor. The processor is configured as follows:

[0159] The system receives CSI measurement reference signal resource pool configuration information sent by the base station. The CSI measurement reference signal resource pool configuration information includes the identification information of n CSI measurement reference signal resources in the CSI measurement reference signal resource set, where n is a positive integer.

[0160] Send CSI measurement configuration information to a second device with which it has direct communication, wherein the CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources out of the n CSI measurement reference signal resources, where m is a positive integer less than or equal to n;

[0161] Receive CSI measurement feedback information sent by the second device.

[0162] Optionally, the CSI measurement reference signal resource set includes at least one of the following CSI measurement reference signal resources: sidelink NZP CSI-RS resource, sidelink ZP CSI-RS resource, sidelink DRS resource, sidelink SSB resource, or sidelink DMRS resource.

[0163] Optionally, the CSI measurement reference signal resource pool configuration information may further include at least one of the following: the subcarrier spacing, CP, frequency domain position, time domain position, Port, and Quasi co-location indication corresponding to the CSI measurement reference signal resource.

[0164] Optionally, the processor is further configured to:

[0165] The system receives feedback mechanism configuration information sent by the base station, the feedback mechanism configuration information including configuration information for k CSI measurement feedback mechanisms, where k is a positive integer;

[0166] The CSI measurement feedback mechanism is sent to the second device.

[0167] Optionally, the k types of CSI measurement feedback mechanisms include at least one of the following: periodic measurement feedback mechanism, non-periodic measurement feedback mechanism, and semi-static measurement feedback mechanism.

[0168] Optionally, the configuration information of the CSI measurement feedback mechanism includes at least one of the following: time-domain configuration information, frequency-domain configuration information, and feedback content configuration information;

[0169] The time-domain configuration information is used to indicate the time for sending the CSI measurement feedback information, the frequency-domain configuration information is used to indicate the frequency-domain resources used for sending the CSI measurement feedback information, and the feedback content configuration information is used to indicate the content contained in the CSI measurement feedback information.

[0170] Optionally, the processor is configured to:

[0171] Receive the CSI measurement feedback information sent by the second device via PSFCH;

[0172] or,

[0173] Receive the CSI measurement feedback information sent by the second device via PSSCH.

[0174] Optionally, the CSI measurement feedback information includes at least one of the following: CQI, PMI, RI, L1-RSRP, L1-SINR, and identification information of the measured CSI measurement reference signal resource.

[0175] An exemplary embodiment of this disclosure also provides a CSI measurement feedback device for a V2X direct communication scenario, capable of implementing the CSI measurement feedback method for a V2X direct communication scenario provided in this disclosure. This device can be the second device described above, or it can be disposed within a second device. The device includes: a processor, and a memory for storing executable instructions of the processor. The processor is configured as follows:

[0176] The base station receives CSI measurement configuration information sent by a first device with which it has direct communication. The CSI measurement configuration information includes the identification information of m CSI measurement reference signal resources in the CSI measurement reference signal resource set configured by the base station, where m is a positive integer.

[0177] Based on the CSI measurement configuration information, CSI measurement feedback information is sent to the first device.

[0178] Optionally, the processor is further configured to:

[0179] Receive CSI measurement feedback mechanism sent by the first device or the base station;

[0180] Based on the CSI measurement configuration information and the CSI measurement feedback mechanism, the CSI measurement feedback information is sent to the first device.

[0181] The above description primarily focuses on the interaction between the first and second devices. It is understood that, to achieve the aforementioned functions, each device (including the first and second devices) includes corresponding hardware structures and / or software modules for executing those functions. By combining the units and algorithm steps of the various examples described in the embodiments disclosed herein, the embodiments of this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed via hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of this disclosure.

[0182] Figure 6 This is a schematic diagram illustrating the structure of a device 600 in a V2X direct communication scenario according to an exemplary embodiment. The device 600 can be a device that directly communicates with other devices in a V2X service scenario, such as in-vehicle equipment, terminals, or other electronic devices. The device 600 can be either the first device or the second device described above.

[0183] The device 600 includes a transmitter 601, a receiver 602, and a processor 603. The processor 603 may also be a controller. Figure 6 The device is designated as "controller / processor 603". Optionally, the device 600 may further include a modem processor 605, wherein the modem processor 605 may include an encoder 606, a modulator 607, a decoder 608, and a demodulator 609.

[0184] In one example, transmitter 601 modulates (e.g., analog-to-analog conversion, filtering, amplification, and up-conversion, etc.) the output sample and generates an uplink signal that is transmitted via an antenna to an access network device. On the downlink, the antenna receives the downlink signal transmitted by the access network device. Receiver 602 modulates (e.g., filtering, amplification, down-conversion, and digitization, etc.) the signal received from the antenna and provides an input sample. In modem processor 605, encoder 606 receives service data and signaling messages to be transmitted on the uplink and processes (e.g., formatting, encoding, and interleaving) the service data and signaling messages. Modulator 607 further processes (e.g., symbol mapping and modulation) the encoded service data and signaling messages and provides an output sample. Demodulator 609 processes (e.g., demodulates) the input sample and provides a symbol estimate. Decoder 608 processes (e.g., deinterleaving and decoding) the symbol estimate and provides decoded data and signaling messages to device 600. Encoder 606, modulator 607, demodulator 609, and decoder 608 can be implemented by a combined modem processor 605. These units perform processing according to the radio access technology used by the radio access network (e.g., LTE and other evolved systems access technologies). It should be noted that when device 600 does not include modem processor 605, the above-mentioned functions of modem processor 605 can also be performed by processor 603.

[0185] The processor 603 controls and manages the operation of the device 600, and is used to execute the processing procedures performed by the device 600 in the above embodiments of this disclosure. For example, the processor 603 is also used to execute various steps of the transmitting or receiving device in the above method embodiments, and / or other steps of the technical solutions described in the embodiments of this disclosure.

[0186] Furthermore, the device 600 may also include a memory 604 for storing program code and data for the device 600.

[0187] Understandable, Figure 6 Only a simplified design of device 600 is shown. In practical applications, device 600 can include any number of transmitters, receivers, processors, modem processors, memory, etc., and all devices that can implement the embodiments of this disclosure are within the protection scope of the embodiments of this disclosure.

[0188] This disclosure also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by the processor of device 600, implements the CSI measurement feedback method in the V2X direct communication scenario as described above.

[0189] It should be understood that "multiple" as used in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0190] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0191] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for channel state information (CSI) measurement feedback in a V2X direct communication scenario, wherein the method is executed by a first device, characterized in that, The method includes: Receive CSI measurement reference signal resource pool configuration information, which is used to determine the resource pool where the CSI measurement reference signal resource is located; Sending CSI measurement configuration information to a second device that communicates directly with the first device, wherein the CSI measurement configuration information is used to indicate the location of the CSI measurement reference signal resource in the resource pool; Receive CSI measurement feedback information sent by the second device; The CSI measurement reference signal resources include the sidelink non-zero power channel state information reference signal (NZP CSI-RS) resources. The CSI measurement reference signal resource pool configuration information includes at least one of the following: frequency domain location, time domain location, and port. The step of receiving the CSI measurement feedback information sent by the second device includes: receiving the CSI measurement feedback information sent by the second device through the Physical Side Link Shared Channel (PSSCH); The CSI measurement feedback information includes the Channel Quality Indicator (CQI) and the Rank Indicator (RI).

2. The method according to claim 1, characterized in that, The method further includes: The system receives feedback mechanism configuration information sent by the base station, which includes configuration information for k CSI measurement feedback mechanisms, where k is a positive integer. The CSI measurement feedback mechanism is sent to the second device.

3. The method according to claim 2, characterized in that, The k types of CSI measurement feedback mechanisms include at least one of the following: periodic measurement feedback mechanism, non-periodic measurement feedback mechanism, and semi-static measurement feedback mechanism.

4. The method according to claim 2, characterized in that, The configuration information of the CSI measurement feedback mechanism includes at least one of the following: time-domain configuration information, frequency-domain configuration information, and feedback content configuration information; The time-domain configuration information is used to indicate the time for sending the CSI measurement feedback information, the frequency-domain configuration information is used to indicate the frequency-domain resources used for sending the CSI measurement feedback information, and the feedback content configuration information is used to indicate the content contained in the CSI measurement feedback information.

5. A method for channel state information (CSI) measurement feedback in a V2X direct communication scenario, wherein the method is executed by a second device, characterized in that... The method includes: Receive CSI measurement configuration information sent by a first device that communicates directly with the second device, wherein the CSI measurement configuration information is used to indicate the position of CSI measurement reference signal resources in the resource pool; Based on the CSI measurement configuration information, send CSI measurement feedback information to the first device; The CSI measurement reference signal resources include the sidelink non-zero power channel state information reference signal (NZP CSI-RS) resources. Sending CSI measurement feedback information to the first device includes: sending the CSI measurement feedback information to the first device via the Physical Side Link Shared Channel (PSSCH); The CSI measurement feedback information includes the Channel Quality Indicator (CQI) and the Rank Indicator (RI).

6. The method according to claim 5, characterized in that, The method further includes: Receive CSI measurement feedback mechanism sent by the first device or base station; Based on the CSI measurement configuration information, CSI measurement feedback information is sent to the first device, including: Based on the CSI measurement configuration information and the CSI measurement feedback mechanism, the CSI measurement feedback information is sent to the first device.

7. A Channel State Information (CSI) measurement and feedback device for V2X direct communication scenarios, characterized in that, Applied in a first device, the device includes: The configuration information receiving module is configured to receive CSI measurement reference signal resource pool configuration information, which is used to determine the resource pool where the CSI measurement reference signal resource is located. The configuration information sending module is configured to send CSI measurement configuration information to a second device that communicates directly with the first device. The CSI measurement configuration information is used to indicate the position of the CSI measurement reference signal resource in the resource pool. The feedback information receiving module is configured to receive CSI measurement feedback information sent by the second device; The CSI measurement reference signal resources include the sidelink non-zero power channel state information reference signal (NZP CSI-RS) resources. The CSI measurement reference signal resource pool configuration information includes at least one of the following: frequency domain location, time domain location, and port. The step of receiving the CSI measurement feedback information sent by the second device includes: receiving the CSI measurement feedback information sent by the second device through the Physical Side Link Shared Channel (PSSCH); The CSI measurement feedback information includes the Channel Quality Indicator (CQI) and the Rank Indicator (RI).

8. The apparatus according to claim 7, characterized in that, The configuration information receiving module is further configured to receive feedback mechanism configuration information sent by the base station. The feedback mechanism configuration information includes configuration information for k CSI measurement feedback mechanisms, where k is a positive integer. The configuration information sending module is also configured to send the CSI measurement feedback mechanism to the second device.

9. A Channel State Information (CSI) measurement and feedback device for V2X direct communication scenarios, characterized in that, Applied in a second device, the device includes: The configuration information receiving module is configured to receive CSI measurement configuration information sent by a first device that communicates directly with the second device. The CSI measurement configuration information is used to indicate the position of the CSI measurement reference signal resource in the resource pool. The feedback information sending module is configured to send CSI measurement feedback information to the first device according to the CSI measurement configuration information; The CSI measurement reference signal resources include the sidelink non-zero power channel state information reference signal (NZP CSI-RS) resources. Sending CSI measurement feedback information to the first device includes: sending the CSI measurement feedback information to the first device via the Physical Side Link Shared Channel (PSSCH); The CSI measurement feedback information includes the Channel Quality Indicator (CQI) and the Rank Indicator (RI).

10. The apparatus according to claim 9, characterized in that, The configuration information receiving module is also configured to receive the CSI measurement feedback mechanism sent by the first device or base station; The feedback information sending module is further configured to send the CSI measurement feedback information to the first device according to the CSI measurement configuration information and the CSI measurement feedback mechanism.

11. A Channel State Information (CSI) measurement and feedback device for V2X direct communication scenarios, characterized in that, Applied in a first device, the device includes: processor; Memory for storing the executable instructions of the processor; The processor is configured as follows: The system receives CSI measurement reference signal resource pool configuration information sent by the base station, which is used to determine the resource pool in which the CSI measurement reference signal resource is located. Send CSI measurement configuration information to a second device that communicates directly with the first device. The CSI measurement configuration information is used to indicate the location of the CSI measurement reference signal resource in the resource pool. Receive CSI measurement feedback information sent by the second device; The CSI measurement reference signal resources include the sidelink non-zero power channel state information reference signal (NZP CSI-RS) resources. The CSI measurement reference signal resource pool configuration information includes at least one of the following: frequency domain location, time domain location, and port. The step of receiving the CSI measurement feedback information sent by the second device includes: receiving the CSI measurement feedback information sent by the second device through the Physical Side Link Shared Channel (PSSCH); The CSI measurement feedback information includes the Channel Quality Indicator (CQI) and the Rank Indicator (RI).

12. A Channel State Information (CSI) measurement and feedback device for V2X direct communication scenarios, characterized in that, Applied in a second device, the device includes: processor; Memory for storing the executable instructions of the processor; The processor is configured as follows: Receive CSI measurement configuration information sent by a first device that communicates directly with the second device, wherein the CSI measurement configuration information is used to indicate the position of CSI measurement reference signal resources in the resource pool; Based on the CSI measurement configuration information, send CSI measurement feedback information to the first device; The CSI measurement reference signal resources include the sidelink non-zero power channel state information reference signal (NZP CSI-RS) resources. Sending CSI measurement feedback information to the first device includes: sending the CSI measurement feedback information to the first device via the Physical Side Link Shared Channel (PSSCH); The CSI measurement feedback information includes the Channel Quality Indicator (CQI) and the Rank Indicator (RI).

13. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 4, or the steps of the method as described in any one of claims 5 to 6.

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