Method, apparatus, and storage medium for obtaining channel state information (CSI) report

Abstract

The disclosed embodiments disclose a method, apparatus, and storage medium for obtaining CSI reports, which can be applied to systems such as the Internet of Vehicles (IoV), Vehicle-to-Everything (V2X), and Vehicle-to-Vehicle (V2V). The method, executed by a first terminal, includes: receiving a CSI report request sent by a second terminal via a unicast connection; receiving configuration information sent by the second terminal; determining a target frequency band from multiple frequency bands; and sending a CSI report for the target frequency band to the second terminal. This method enables unicast connections between the first and second terminals, supports the sending and receiving of CSI reports for multiple frequency bands, and improves the performance of the communication system.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to a method, device, and storage medium for acquiring a channel state information (CSI) report. Background Art

[0002] To support direct communication between terminals, the sidelink communication method is introduced. Terminals can use Sidelink to communicate with each other through the PC5 interface. Sidelink supports multiple transmission modes such as unicast, multicast, and broadcast.

[0003] In the related art, terminals only support the sending and receiving of information on one frequency band, such as the sending and receiving of Sidelink CSI (Channel State Information) reports, but do not support the sending and receiving of CSI reports on multiple frequency bands. This is an urgent problem that needs to be solved. Summary of the Invention

[0004] The embodiments of the present disclosure provide a method, device, and storage medium for obtaining a CSI report, which can be applied to the Internet of Vehicles, such as vehicle-to-everything (V2X) communication, long-term evolution-vehicle (LTE-V) communication, vehicle-to-vehicle (V2V) communication, etc., or can be used in the fields of intelligent driving and intelligent connected vehicles. It can realize unicast connection between the first terminal and the second terminal, support the sending and receiving of CSI reports in multiple frequency bands, and improve the performance of the communication system.

[0005] In a first aspect, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is executed by a first terminal. The method includes: receiving a CSI report request sent by a second terminal based on a unicast connection; receiving configuration information sent by the second terminal; determining a target frequency band among multiple frequency bands; and sending a CSI report of the target frequency band to the second terminal.

[0006] In this technical solution, a first terminal receives a CSI report request from a second terminal connected via a unicast connection; receives configuration information from the second terminal, determines a target frequency band, and sends a CSI report for the target frequency band to the second terminal. This enables the first and second terminals connected via a unicast connection to send and receive CSI reports for multiple frequency bands, improving communication system performance.

[0007] In a second aspect, an embodiment of the present disclosure provides another method for obtaining a CSI report, which is executed by a second terminal. The method includes: sending a CSI report request to a first terminal based on a unicast connection; sending configuration information to the second terminal; and receiving a CSI report of a target frequency band sent by the second terminal; wherein the target frequency band is determined by the second terminal from multiple frequency bands.

[0008] In a third aspect, an embodiment of the present disclosure provides a communication device, which has the function of implementing some or all of the functions of the first terminal in the method described in the first aspect above. For example, the functions of the communication device may have the functions of some or all of the embodiments of the present disclosure, or may have the function of implementing any one of the embodiments of the present disclosure separately. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0009] In one implementation, the communication device may include a transceiver module and a processing module, wherein the processing module is configured to support the communication device in performing the corresponding functions of the above-mentioned method. The transceiver module is used to support communication between the communication device and other devices. The communication device may also include a storage module, which is coupled to the transceiver module and the processing module and stores computer programs and data necessary for the communication device.

[0010] As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

[0011] In one implementation, the communication device includes: a receiving module for receiving a CSI report request sent by a second terminal based on a unicast connection; receiving configuration information sent by the second terminal; a processing module for determining a target frequency band among multiple frequency bands; and a sending module for sending a CSI report of the target frequency band to the second terminal.

[0012] In a fourth aspect, an embodiment of the present disclosure provides a communication device that implements some or all of the functions of the second terminal in the method described in the second aspect above. For example, the functions of the communication device may include some or all of the functions in the embodiments of the present disclosure, or may include the functions of implementing any one of the embodiments of the present disclosure separately. The functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

[0013] In one implementation, the communication device may include a transceiver module and a processing module, the processing module being configured to support the communication device in performing the corresponding functions of the above-described method. The transceiver module is configured to support communication between the communication device and other devices. The communication device may also include a storage module, coupled to the transceiver module and the processing module, which stores computer programs and data necessary for the communication device.

[0014] In one implementation, the communication device includes: a sending module for sending a CSI report request to a first terminal based on a unicast connection; sending configuration information to the second terminal; and a receiving module for receiving a CSI report of a target frequency band sent by the second terminal; wherein the target frequency band is determined by the second terminal from multiple frequency bands.

[0015] In a fifth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the first or second aspect is executed.

[0016] In a sixth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the first or second aspect above.

[0017] In the seventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the first or second aspect above.

[0018] In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned first terminal, and when the instructions are executed, the first terminal executes the method described in the above-mentioned first aspect or second aspect.

[0019] In a ninth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first or second aspect above.

[0020] In a tenth aspect, the present disclosure provides a chip system comprising at least one processor and an interface for supporting a terminal in implementing the functions described in the first or second aspect, such as determining or processing at least one of the data and information described in the aforementioned method. In one possible design, the chip system further comprises a memory for storing computer programs and data necessary for the terminal. The chip system may consist of a chip or may include a chip and other discrete components.

[0021] In an eleventh aspect, the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the method described in the first or second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0023] Figure 1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

[0024] Figure 2 is a flowchart of a method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0025] Figure 3 is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0026] Figure 4 is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0027] Figure 5 is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0028] Figure 6 is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0029] Figure 7 is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0030] Figure 8 is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0031] Figure 9 is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure;

[0032] Figure 10 is a structural diagram of a communication device provided by an embodiment of the present disclosure;

[0033] Figure 11 is a structural diagram of a communication device provided by an embodiment of the present disclosure;

[0034] Figure 12 This is a structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] To facilitate understanding, the terms involved in this disclosure are first introduced.

[0036] 1. Vehicle-to-everything (V2X) communication

[0037] V2X communication refers to the communication between a vehicle and anything in the outside world. V2X communication may include, but is not limited to, vehicle-to-vehicle (V2V) communication, vehicle-to-pedestrian (V2P) communication, vehicle-to-infrastructure (V2I) communication, and vehicle-to-network (V2N) communication.

[0038] In order to better understand the method, device, and storage medium for obtaining a CSI report disclosed in the embodiments of the present disclosure, the communication system to which the embodiments of the present disclosure are applicable is first described below.

[0039] See Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system 10 provided in an embodiment of the present disclosure. The communication system 10 may include but is not limited to a network side device and a terminal. Figure 1 The number and form of the devices shown are for example only and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more network-side devices and two or more terminals may be included. Figure 1 The communication system 10 shown includes a network-side device 101 and a terminal 102 as an example.

[0040] It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems. For example, long term evolution (LTE) systems, fifth generation (5G) mobile communication systems, 5G new radio (NR) systems, or other future new mobile communication systems. It should also be noted that the side link in the embodiments of the present disclosure can also be referred to as a side link, a direct link, or a direct link.

[0041] The network side device 101 in the embodiment of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network side device 101 can be an evolved NodeB (eNB), a transmission point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the network side device. The network side device provided in the embodiment of the present disclosure can be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the network side device, such as the base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0042] The terminal 102 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal can also be called a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal can be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the terminal.

[0043] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0044] The following describes in detail the CSI report acquisition method, device, and storage medium provided by the present disclosure with reference to the accompanying drawings.

[0045] See Figure 2 , Figure 2 This is a flowchart of a method for obtaining a CSI report provided by an embodiment of the present disclosure.

[0046] like Figure 2 As shown, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is performed by a first terminal. The method may include but is not limited to the following steps:

[0047] S21: Receive a CSI report request sent by a second terminal based on a unicast connection; receive configuration information sent by the second terminal.

[0048] It should be noted that in the embodiment of the present disclosure, the first terminal establishes a unicast connection with the second terminal, and the second terminal sends Sidelink Control Information (SCI) on the PSCCH (Physical Sidelink Control Channel), which carries the resource location of the transmitted data and the source terminal identifier and the target terminal identifier, etc., wherein the first terminal establishes a unicast connection with the second terminal, and the source terminal identifier and the target terminal identifier correspond to the first terminal and the second terminal respectively, so that after receiving the SCI, the first terminal determines to receive the corresponding data and which process it corresponds to based on the source terminal identifier and the destination terminal identifier. In the unicast connection, each terminal corresponds to a destination identifier.

[0049] Of course, the above-mentioned unicast connection method between the first terminal and the second terminal is only for illustration. The unicast connection method between the first terminal and the second terminal may also be other methods in the relevant technology, and the embodiments of the present disclosure do not impose specific limitations on this.

[0050] In an embodiment of the present disclosure, a first terminal receives an SCI (Signal Information Response) from a second terminal, where the SCI carries a CSI report request. After receiving the CSI report request, the first terminal measures the radio channel quality for sidelink communication with the second terminal. If sidelink communication between the first and second terminals occurs over only a single frequency band, the first terminal measures the signal in that frequency band after receiving the CSI report request from the second terminal.

[0051] S22: Determine a target frequency band among the multiple frequency bands.

[0052] It is understandable that, in the case where sidelink communication can be performed between the first terminal and the second terminal via multiple frequency bands, when the first terminal receives a CSI report request sent by the second terminal, it is unable to determine which frequency band to measure the channel quality.

[0053] Based on this, in an embodiment of the present disclosure, the CSI report request sent by the second terminal indicates information of a target frequency band among multiple frequency bands. Thus, when the first terminal receives the CSI report request sent by the second terminal, it can determine the target frequency band based on the information of the target frequency band among multiple frequency bands indicated by the CSI report request.

[0054] Alternatively, in an embodiment of the present disclosure, the second terminal sends configuration information to the first terminal, wherein the configuration information indicates information of a target frequency band among multiple frequency bands. The first terminal receives the configuration information sent by the second terminal and can determine the target frequency band based on information of the target frequency band among multiple frequency bands indicated by the configuration information.

[0055] Alternatively, in an embodiment of the present disclosure, the second terminal sends configuration information to the first terminal, wherein the CSI report request and the configuration information indicate information of a target frequency band among multiple frequency bands. The first terminal receives the CSI report request and the configuration information sent by the second terminal and can determine the target frequency band based on the information indicated by the configuration information and the information indicated by the configuration information of the target frequency band among multiple frequency bands.

[0056] In the embodiment of the present disclosure, the target frequency band may be one or more specific frequency points (carriers) or a specific frequency bandwidth portion.

[0057] S23: Send a CSI report of the target frequency band to the second terminal.

[0058] In the embodiment of the present disclosure, after determining the target frequency band, the first terminal measures the wireless channel quality of the target frequency band, generates a CSI report of the target frequency band, and then may send the CSI report of the target frequency band to the second terminal.

[0059] In some embodiments, the CSI report indicates a channel quality indicator CQI (Channel Quality Indicator) of the target frequency band and a frequency band identifier; wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report.

[0060] In an embodiment of the present disclosure, the CSI report of the target frequency band sent by the first terminal to the second terminal indicates the CQI of the target frequency band and the frequency band identifier, wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report, so that after the second terminal receives the CSI report, it can determine the CSI report of the target frequency band and the CQI of the target frequency band.

[0061] In some embodiments, when the configuration information includes a frequency band list and the frequency band list includes at least one frequency band, the frequency band identifier is a second index identifier, and the second index identifier indicates the second position in the frequency band list, wherein the fifth frequency band at the second position in the frequency band list indicated by the second index identifier is the target frequency band corresponding to the CSI report.

[0062] In an embodiment of the present disclosure, the configuration information sent by the second terminal includes a frequency band list, including at least one frequency band. The frequency band identifier indicated by the CSI report may be a second index identifier, and the second index identifier indicates the second position in the frequency band list. The first terminal can determine the target frequency band based on the second position in the frequency band list indicated by the second index identifier and the frequency band list. When the frequency band at the second position in the frequency band list indicated by the second index identifier is the fifth frequency band, it can be determined that the received CSI report is the fifth frequency band.

[0063] For ease of understanding, the present disclosure provides an exemplary embodiment.

[0064] As shown in Table 1 below:

[0065] Serial number frequency band 1 5GHz 2 5.1GHz 3 6GHz

[0066] Table 1

[0067] The configuration information sent by the second terminal includes a frequency band list, and the second index identifiers of the frequency band identifier indicated by the CSI report are 1 and 2. The second index identifiers 1 and 2 indicate the second positions in the frequency band list, which are serial numbers 1 and 2 respectively. The first terminal can determine that the fifth frequency band is 5GHz and 5.1GHz based on the second position in the frequency band list indicated by the second index identifier and the frequency band list. The target frequency band can be determined as the fifth frequency band is 5GHz and 5.1GHz. Thus, the second terminal can determine the target frequency point corresponding to the CSI report based on the CSI report received from the first terminal.

[0068] It should be noted that the above examples are for illustration only. The format of the frequency band list and the format of the second index identifier can also be other ways. For example, the frequency band list can also include other parts, or the frequency band list does not include a serial number column, etc. The second index identifier can also be in the form of a list. The embodiments of the present disclosure do not impose specific restrictions on this.

[0069] In some embodiments, the structure of the CSI report is a direct link channel state information medium access control layer control element Sidelink CSI Reporting MAC CE structure, and the Sidelink CSI Reporting MAC CE structure includes a reserved bit, and the reserved bit is used to carry a frequency band identifier.

[0070] In the embodiment of the present disclosure, the structure of the CSI report is a Sidelink CSI Reporting MAC CE (Media Access Control Control Element) structure.

[0071] For example, Figure 3 As shown, the structure of the CSI report includes: RI represents the Sidelink CSI reporting level indicator, CQI represents the channel quality indicator, and R represents the reserved bit.

[0072] In the embodiment of the present disclosure, the frequency band identifier is carried by the reserved bit.

[0073] In some embodiments, the Sidelink CSI Reporting MAC CE structure includes multiple parts, each corresponding to a plurality of target frequency bands.

[0074] In the embodiment of the present disclosure, Figure 3 As shown, when the target frequency band includes multiple frequency bands, in the CSI report sent by the first terminal to the second terminal, the structure of the CSI report Sidelink CSI Reporting MAC CE structure includes multiple parts, for example, including multiple rows, each row corresponding to a frequency band in the target frequency band.

[0075] In this technical solution, a first terminal receives a CSI report request from a second terminal connected via a unicast connection; receives configuration information from the second terminal, determines a target frequency band, and sends a CSI report for the target frequency band to the second terminal. This enables the first and second terminals connected via a unicast connection to send and receive CSI reports for multiple frequency bands, improving communication system performance.

[0076] See Figure 4 , Figure 4This is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure.

[0077] like Figure 4 As shown, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is performed by a first terminal. The method may include but is not limited to the following steps:

[0078] S41: Receive a CSI report request sent by a second terminal based on a unicast connection; receive configuration information sent by the second terminal; the configuration information includes a first frequency band.

[0079] In an embodiment of the present disclosure, the first terminal receives configuration information sent by the second terminal, wherein the configuration information includes a first frequency band. In the embodiment of the present disclosure, the first frequency band may be one or more specific frequency points (carriers) or a specific frequency bandwidth portion.

[0080] It should be noted that, for the relevant description of embodiment S41 of the present disclosure, reference can be made to the relevant description in the above embodiments, and the same description will not be repeated here.

[0081] S42: Determine, according to the configuration information, that a target frequency band among the multiple frequency bands is a first frequency band.

[0082] S43: Send a CSI report of the target frequency band to the second terminal.

[0083] In an embodiment of the present disclosure, after determining the target frequency band based on the CSI report request sent by the second terminal and the configuration information sent by the second terminal, the first terminal measures the wireless channel quality of the target frequency band and generates a CSI report for the target frequency band. After that, the CSI report for the target frequency band can be sent to the second terminal.

[0084] In this technical solution, a first terminal receives a CSI report request from a second terminal connected via a unicast connection, receives configuration information from the second terminal, the configuration information including a first frequency band, determines the first frequency band as the target frequency band based on the configuration information, and sends a CSI report for the target frequency band to the second terminal. This enables the first and second terminals connected via a unicast connection to support the sending and receiving of CSI reports for multiple frequency bands, thereby improving the performance of the communication system.

[0085] See Figure 5 , Figure 5 This is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure.

[0086] like Figure 5 As shown, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is performed by a first terminal. The method may include but is not limited to the following steps:

[0087] S51: Receive a CSI report request sent by a second terminal based on a unicast connection; receive configuration information sent by the second terminal; the CSI report request indicates a second frequency band.

[0088] In an embodiment of the present disclosure, a first terminal receives a CSI report request sent by a second terminal, wherein the CSI report request includes a second frequency band. In an embodiment of the present disclosure, the second frequency band may be one or more specific frequency points (carriers) or a specific frequency bandwidth portion.

[0089] It should be noted that, for the relevant description of embodiment S51 of the present disclosure, reference can be made to the relevant description in the above embodiments, and the same description will not be repeated here.

[0090] S52: Determine, according to the CSI report request, a target frequency band among the multiple frequency bands as a second frequency band.

[0091] S53: Send a CSI report of the target frequency band to the second terminal.

[0092] In an embodiment of the present disclosure, after determining the target frequency band based on the CSI report request sent by the second terminal, the first terminal measures the wireless channel quality of the target frequency band and generates a CSI report for the target frequency band. After that, the CSI report for the target frequency band can be sent to the second terminal.

[0093] In this technical solution, a first terminal receives a CSI report request from a second terminal connected via a unicast connection. The CSI report request indicates a second frequency band. Based on the CSI report request, the first terminal determines that the second frequency band is the target frequency band, and then sends a CSI report for the target frequency band to the second terminal. This enables the first and second terminals connected via a unicast connection to support the sending and receiving of CSI reports for multiple frequency bands, thereby improving the performance of the communication system.

[0094] See Figure 6 , Figure 6 This is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure.

[0095] like Figure 6 As shown, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is performed by a first terminal. The method may include but is not limited to the following steps:

[0096] S61: Receive a CSI report request sent by a second terminal based on a unicast connection; receive configuration information sent by the second terminal; the second terminal sends a CSI report request on a third frequency band.

[0097] In an embodiment of the present disclosure, a first terminal receives a CSI report request sent by a second terminal, wherein the second terminal sends the CSI report request on a third frequency band. In an embodiment of the present disclosure, the third frequency band may be one or more specific frequency points (carriers) or a specific frequency bandwidth portion.

[0098] It should be noted that, for the relevant description of embodiment S61 of the present disclosure, reference can be made to the relevant description in the above embodiments, and the same description will not be repeated here.

[0099] S62: Determine, according to the CSI report request, that the target frequency band among the multiple frequency bands is a third frequency band.

[0100] S63: Send a CSI report of the target frequency band to the second terminal.

[0101] In an embodiment of the present disclosure, after determining the target frequency band based on the CSI report request sent by the second terminal, the first terminal measures the wireless channel quality of the target frequency band and generates a CSI report for the target frequency band. After that, the CSI report for the target frequency band can be sent to the second terminal.

[0102] In this technical solution, a first terminal receives a CSI report request from a second terminal connected via a unicast connection. The second terminal then sends a CSI report request on a third frequency band. Based on the CSI report request, the first terminal determines that the third frequency band is the target frequency band, and then sends a CSI report for the target frequency band to the second terminal. This allows the first and second terminals connected via unicast to send and receive CSI reports for multiple frequency bands, improving the performance of the communication system.

[0103] See Figure 7 , Figure 7 This is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure.

[0104] like Figure 7 As shown, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is performed by a first terminal. The method may include but is not limited to the following steps:

[0105] S71: Receive a CSI report request sent by a second terminal based on a unicast connection; receive configuration information sent by the second terminal; the configuration information includes a frequency band list, the frequency band list includes at least one frequency band, the CSI report request indicates a first index identifier, and the first index identifier indicates a first position in the frequency band list.

[0106] Among them, the relevant description of embodiment S71 of the present disclosure can refer to the relevant description in the above embodiments, and the same description will not be repeated here.

[0107] In an embodiment of the present disclosure, a first terminal receives a CSI report request and configuration information sent by a second terminal, wherein the configuration information includes a frequency band list, the frequency band list includes at least one frequency band, the CSI report request indicates a first index identifier, and the first index identifier indicates a first position in the frequency band list. In an embodiment of the present disclosure, the frequency bands included in the frequency band list may be one or more specific frequency points (carriers) or specific frequency bandwidth parts.

[0108] Exemplarily, the first terminal sends configuration information to the second terminal based on the unicast connection, where the configuration information includes a frequency band list, and the frequency band list is shown in Table 1 above.

[0109] In an embodiment of the present disclosure, a first terminal receives a CSI report request and configuration information sent by a second terminal. The configuration information includes a frequency band list as shown in Table 1 above. The frequency band list includes at least one frequency band. The CSI report request indicates a first index identifier, for example: the first index identifier indicates that the first position in the frequency band list is 1 and 3.

[0110] S72: Determine, according to the first index identifier, a fourth frequency band located at the first position in the frequency band list; and determine that a target frequency band among the multiple frequency bands is the fourth frequency band.

[0111] In an embodiment of the present disclosure, a first terminal receives a CSI report request and configuration information sent by a second terminal, where the configuration information includes a frequency band list, where the frequency band list includes at least one frequency band, and the CSI report request indicates a first index identifier, where the first index identifier indicates a first position in the frequency band list. Thus, the first terminal determines, based on the first index identifier, that the frequency band located at the first specific position in the frequency band list is the fourth frequency band, and further determines that the target frequency band is the fourth frequency band.

[0112] For example, continuing to refer to the above example, the first index identifier indicates that the first position in the frequency band list is 1 and 3, then the first terminal can determine that the fourth frequency bands located at 1 and 3 in the frequency band list are 5GHz and 6GHz based on the first index identifier, and then determine that the target frequency bands are 5GHz and 6GHz.

[0113] It should be noted that the above examples are for illustration only. The format of the frequency band list and the format of the first index identifier can also be other ways. For example, the frequency band list can also include other parts, or the frequency band list does not include a serial number column, etc. The first index identifier can also be in the form of a list. The embodiments of the present disclosure do not impose specific restrictions on this.

[0114] S73: Send a CSI report of the target frequency band to the second terminal.

[0115] In an embodiment of the present disclosure, after determining the target frequency band based on the CSI report request and configuration information sent by the second terminal, the first terminal measures the wireless channel quality of the target frequency band, generates a CSI report for the target frequency band, and then can send the CSI report for the target frequency band to the second terminal.

[0116] In this technical solution, a first terminal receives a CSI report request and configuration information sent by a second terminal via a unicast connection. The configuration information includes a frequency band list, which includes at least one frequency band. The CSI report request indicates a first index identifier, which indicates the first position in the frequency band list. Based on the CSI report request and configuration information, the first terminal determines that the target frequency band is the fourth frequency band, and sends a CSI report for the target frequency band to the second terminal. This allows the first and second terminals in a unicast connection to support the sending and receiving of CSI reports for multiple frequency bands, thereby improving the performance of the communication system.

[0117] See Figure 8 , Figure 8 This is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure.

[0118] like Figure 8 As shown, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is performed by a first terminal. The method may include but is not limited to the following steps:

[0119] S81: Receive a CSI report request sent by a second terminal based on a unicast connection; receive configuration information sent by the second terminal; the configuration information includes a report delay corresponding to a target frequency band.

[0120] In an embodiment of the present disclosure, a first terminal receives configuration information sent by a second terminal, where the configuration information includes a reporting delay corresponding to a target frequency band. For example, the configuration information includes a reporting delay of 5ms or 10ms, or includes a list of multiple frequency bands including the target frequency band and the reporting delays.

[0121] In which case, when the configuration information includes a reporting delay of 5ms, the reporting delay corresponding to the target frequency band is determined to be 5ms. When the target frequency band includes multiple frequency bands, the reporting delays of the multiple frequency bands are all 5ms.

[0122] In the case where the configuration information includes a list of multiple frequency bands including the target frequency band and the reporting delays, the reporting delay of the target frequency band may be determined according to the correspondence between the frequency bands and the reporting delays in the list.

[0123] For example, the list is shown in Table 2 below.

[0124] Serial number frequency band Reporting delay 1 5GHz 5ms 2 5.1GHz 5ms 3 6GHz 10ms

[0125] Table 2

[0126] It is understandable that the configuration information includes the reporting delay corresponding to the target frequency band, and may directly indicate the reporting delay of the target frequency band, or may also include a list as shown in Table 2 above, including the reporting delay of the target frequency band.

[0127] S82: Determine a target frequency band among the multiple frequency bands.

[0128] In the embodiment of the present disclosure, the first terminal receives configuration information of the second terminal, where the configuration information includes a reporting delay corresponding to a target frequency band. Thus, after determining the target frequency band, the reporting delay corresponding to the target frequency band can be determined.

[0129] Assuming that the target frequency bands are determined to be 5 GHz and 5.1 GHz, and the configuration information includes a reporting delay of 10 ms corresponding to the target frequency bands, it can be determined that the reporting delay corresponding to the target frequency bands 5 GHz and 5.1 GHz is 10 ms.

[0130] Among them, assuming that the target frequency bands are determined to be 5GHz and 6GHz, and the reporting delay corresponding to the target frequency bands included in the configuration information is the list in the above example, it can be determined that the reporting delay corresponding to the target frequency band of 5GHz is 5ms, and the reporting delay corresponding to 6GHz is 10ms.

[0131] Among them, the relevant descriptions of the embodiments S81 and S82 of the present disclosure can refer to the relevant descriptions in the above embodiments, and the same descriptions will not be repeated here.

[0132] S83: Start a CSI report timer, and in response to the CSI report timer timing out, cancel sending the CSI report of the target frequency band to the second terminal; wherein the timing time of the CSI report timer is the reporting delay.

[0133] It is understandable that the CSI report needs to be sent within a scheduled time, otherwise the CSI report will be invalid.

[0134] In an embodiment of the present disclosure, upon receiving a CSI report request from a second terminal, a first terminal may start a countdown of a CSI report timer. If the target frequency band includes multiple frequency bands, CSI reports for the multiple frequency bands may need to be sent at the same time, or CSI reports for different frequency bands may be sent at different times.

[0135] In some embodiments, when the CSI report timer has not timed out and the first terminal has completed the measurement of the channel quality of the target frequency band and generated a CSI report, the CSI report of the target frequency band is sent to the second terminal; wherein the timing time of the CSI report timer is the reporting delay.

[0136] For example, when the reporting delay of the target frequency is 10ms, when there are 2ms left in the countdown of the CSI report timer, the first terminal has completed the measurement of the channel quality of the target frequency band and generated a CSI report. At this time, the CSI report of the target frequency band can be sent to the second terminal.

[0137] In some other embodiments, when the CSI report timer expires, sending the CSI report of the target frequency band to the second terminal is canceled.

[0138] For example, when the reporting delay of the target frequency is 10ms, and there is 0ms left in the countdown of the CSI report timer, if the first terminal has not completed the measurement of the channel quality of the target frequency band and generated a CSI report at this time, the CSI report of the target frequency band sent to the second terminal will be canceled.

[0139] In some other embodiments, when the generated CSI report corresponding to the target frequency band is sent to the second terminal and the CSI report timer has not timed out, the countdown of the CSI report timer is stopped.

[0140] For example, when the reporting delay of the target frequency is 10ms, and there are 3ms left in the countdown of the CSI report timer, if the first terminal has completed the measurement of the channel quality of the target frequency band, generated a CSI report, and sent the CSI report of the target frequency band to the second terminal, the countdown of the CSI report timer is stopped.

[0141] See Figure 9 , Figure 9 This is a flowchart of another method for obtaining a CSI report provided by an embodiment of the present disclosure.

[0142] like Figure 9 As shown, an embodiment of the present disclosure provides a method for obtaining a CSI report, which is performed by a second terminal. The method may include but is not limited to the following steps:

[0143] S91: Send a CSI report request to a first terminal based on a unicast connection; and send configuration information to the second terminal.

[0144] It should be noted that in the embodiment of the present disclosure, the first terminal establishes a unicast connection with the second terminal, and the second terminal sends Sidelink Control Information (SCI) on the PSCCH (Physical Sidelink Control Channel), which carries the resource location of the transmitted data and the source terminal identifier and the target terminal identifier, etc., wherein the first terminal establishes a unicast connection with the second terminal, and the source terminal identifier and the target terminal identifier correspond to the first terminal and the second terminal respectively, so that after receiving the SCI, the first terminal determines to receive the corresponding data and which process it corresponds to based on the source terminal identifier and the destination terminal identifier. In the unicast connection, each terminal corresponds to a destination identifier.

[0145] Of course, the above-mentioned unicast connection method between the first terminal and the second terminal is only for illustration. The unicast connection method between the first terminal and the second terminal may also be other methods in the relevant technology, and the embodiments of the present disclosure do not impose specific limitations on this.

[0146] In an embodiment of the present disclosure, a first terminal receives an SCI (Signal Information Response) from a second terminal, where the SCI carries a CSI report request. After receiving the CSI report request, the first terminal measures the radio channel quality for sidelink communication with the second terminal. If sidelink communication between the first and second terminals occurs over only a single frequency band, the first terminal measures the signal in that frequency band after receiving the CSI report request from the second terminal.

[0147] S92: Receive a CSI report of a target frequency band sent by the second terminal; wherein the target frequency band is determined by the second terminal from multiple frequency bands.

[0148] It is understandable that, in the case where sidelink communication can be performed between the first terminal and the second terminal via multiple frequency bands, when the first terminal receives a CSI report request sent by the second terminal, it is unable to determine which frequency band to measure the channel quality.

[0149] Based on this, in an embodiment of the present disclosure, the CSI report request sent by the second terminal indicates information of a target frequency band among multiple frequency bands. Thus, when the first terminal receives the CSI report request sent by the second terminal, it can determine the target frequency band based on the information of the target frequency band among multiple frequency bands indicated by the CSI report request.

[0150] Alternatively, in an embodiment of the present disclosure, the second terminal sends configuration information to the first terminal, wherein the configuration information indicates information of a target frequency band among multiple frequency bands. The first terminal receives the configuration information sent by the second terminal and can determine the target frequency band based on information of the target frequency band among multiple frequency bands indicated by the configuration information.

[0151] Alternatively, in an embodiment of the present disclosure, the second terminal sends configuration information to the first terminal, wherein the CSI report request and the configuration information indicate information of a target frequency band among multiple frequency bands. The first terminal receives the CSI report request and the configuration information sent by the second terminal and can determine the target frequency band based on the information indicated by the configuration information and the information indicated by the configuration information of the target frequency band among multiple frequency bands.

[0152] In the embodiment of the present disclosure, the target frequency band may be one or more specific frequency points (carriers) or a specific frequency bandwidth portion.

[0153] In some embodiments, the configuration information includes a first frequency band.

[0154] In some embodiments, the CSI report request indicates the second frequency band.

[0155] In some embodiments, sending a CSI report request to a first terminal based on a unicast connection includes sending a CSI report request to the first terminal based on a unicast connection on a third frequency band.

[0156] In some embodiments, the configuration information includes a frequency band list including at least one frequency band.

[0157] In some embodiments, the configuration information further includes reporting delays corresponding to the frequency bands in the frequency band list.

[0158] In some embodiments, the CSI report request indicates a first index identifier, and the first index identifier indicates a first position in the frequency band list.

[0159] In the embodiment of the present disclosure, after determining the target frequency band, the first terminal measures the wireless channel quality of the target frequency band, generates a CSI report of the target frequency band, and then may send the CSI report of the target frequency band to the second terminal.

[0160] In some embodiments, the CSI report indicates a channel quality indicator CQI (Channel Quality Indicator) of the target frequency band and a frequency band identifier; wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report.

[0161] In an embodiment of the present disclosure, the CSI report of the target frequency band sent by the first terminal to the second terminal indicates the CQI of the target frequency band and the frequency band identifier, wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report, so that after the second terminal receives the CSI report, it can determine the CSI report of the target frequency band and the CQI of the target frequency band.

[0162] In some embodiments, when the configuration information includes a frequency band list and the frequency band list includes at least one frequency band, the frequency band identifier is a second index identifier, and the second index identifier indicates the second position in the frequency band list, wherein the fifth frequency band indicated by the second index identifier and located at the second position in the frequency band list is the target frequency band corresponding to the CSI report.

[0163] In an embodiment of the present disclosure, the configuration information sent by the second terminal includes a frequency band list, including at least one frequency band. The frequency band identifier indicated by the CSI report may be a second index identifier, and the second index identifier indicates the second position in the frequency band list. The first terminal can determine the target frequency band based on the second position in the frequency band list indicated by the second index identifier and the frequency band list. When the second index identifier indicates that the frequency band located at the second position in the frequency band list is the fifth frequency band, it can be determined that the received CSI report is the fifth frequency band.

[0164] For ease of understanding, the present disclosure provides an exemplary embodiment.

[0165] As shown in Table 1 above, the configuration information sent by the second terminal includes a frequency band list, and the second index identifiers of the frequency band identifier indicated by the CSI report are 1 and 2. The second index identifiers 1 and 2 indicate the second positions in the frequency band list are serial numbers 1 and 2 respectively. The first terminal can determine that the fifth frequency band is 5GHz and 5.1GHz based on the second index identifier indicating the second position in the frequency band list and the frequency band list. The target frequency band can be determined as the fifth frequency band is 5GHz and 5.1GHz. Thus, the second terminal can determine the target frequency point corresponding to the CSI report based on the CSI report received from the first terminal.

[0166] In some embodiments, the structure of the CSI report is a direct link channel state information medium access control layer control element Sidelink CSI Reporting MAC CE structure, and the Sidelink CSI Reporting MAC CE structure includes a reserved bit, and the reserved bit is used to carry a frequency band identifier.

[0167] In the embodiment of the present disclosure, the structure of the CSI report is a Sidelink CSI Reporting MAC CE structure.

[0168] For example, Figure 3As shown, the structure of the CSI report includes reserved bits, and in the embodiment of the present disclosure, the reserved bits carry the frequency band identifier.

[0169] In some embodiments, the Sidelink CSI Reporting MAC CE structure includes multiple parts, each corresponding to a plurality of target frequency bands.

[0170] In an embodiment of the present disclosure, when the target frequency band includes multiple frequency bands, in the CSI report sent by the first terminal to the second terminal, the structure of the CSI report Sidelink CSI Reporting MAC CE structure includes multiple parts, for example: including multiple rows, each row corresponding to a frequency band in the target frequency band.

[0171] In this technical solution, a first terminal receives a CSI report request from a second terminal connected via a unicast connection; receives configuration information from the second terminal, determines a target frequency band, and sends a CSI report for the target frequency band to the second terminal. This enables the first and second terminals connected via a unicast connection to send and receive CSI reports for multiple frequency bands, improving communication system performance.

[0172] It should be noted that, for the relevant descriptions of embodiments S91 and S92 of the present disclosure, reference can be made to the relevant descriptions in the above embodiments, and the same descriptions will not be repeated here.

[0173] In the above embodiments of the present disclosure, the methods provided in the embodiments of the present disclosure are described from the perspectives of the first terminal and the second terminal. To implement the various functions of the methods provided in the above embodiments of the present disclosure, the first terminal and the second terminal may include hardware structures and software modules, and the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures and software modules. Certain of the aforementioned functions may be implemented in the form of hardware structures, software modules, or hardware structures and software modules.

[0174] See Figure 10 , which is a structural diagram of a communication device 1 provided in an embodiment of the present disclosure. Figure 10 The communication device 1 shown may include a transceiver module and a processing module 13. The transceiver module may include a sending module 11 and / or a receiving module 12, wherein the sending module 11 is used to implement a sending function and the receiving module 12 is used to implement a receiving function. The transceiver module may implement a sending function and / or a receiving function.

[0175] The communication device 1 may be the first terminal or the second terminal, or a device in the first terminal or the second terminal, or a device that can be used in conjunction with the first terminal or the second terminal.

[0176] Communication device 1 is a first terminal:

[0177] The communication device 1 includes a sending module 11 , a receiving module 12 and a processing module 13 .

[0178] Receiving module 12, for receiving a CSI report request sent by a second terminal based on a unicast connection; receiving configuration information sent by the second terminal.

[0179] The processing module 13 is configured to determine a target frequency band among the multiple frequency bands.

[0180] The sending module 11 is configured to send a CSI report of a target frequency band to a second terminal.

[0181] In some embodiments, the processing module 13 is specifically configured to determine, according to the configuration information, that the target frequency band is the first frequency band; the configuration information indicates the first frequency band.

[0182] In some embodiments, the processing module 13 is specifically configured to determine, according to the CSI report request, that the target frequency band is the second frequency band; the CSI report request indicates the second frequency band.

[0183] In some embodiments, the processing module 13 is specifically configured to determine, according to the CSI report request, that the target frequency band is the third frequency band; and the second terminal sends the CSI report request on the third frequency band.

[0184] In some embodiments, the processing module 13 is specifically used to determine the fourth frequency band located at the first position in the frequency band list based on the first index identifier; determine that the target frequency band is the fourth frequency band; the configuration information includes a frequency band list, the frequency band list includes at least one frequency band, the CSI report request indicates the first index identifier, and the first index identifier indicates the first position in the frequency band list.

[0185] In some embodiments, the processing module 13 is further configured to start a CSI reporting timer.

[0186] In some embodiments, the sending module 11 is further used to cancel sending the CSI report of the target frequency band to the second terminal in response to the CSI report timer expiring; the configuration information includes the reporting delay corresponding to the target frequency band; wherein the timing time of the CSI report timer is the reporting delay.

[0187] In some embodiments, the processing module 13 is further used to stop the countdown of the CSI report timer in response to sending the generated CSI report corresponding to the target frequency band to the second terminal and the CSI report timer has not timed out; the configuration information includes the report delay corresponding to the target frequency band; wherein the timing time of the CSI report timer is the report delay.

[0188] In some embodiments, the CSI report indicates a channel quality indicator CQI of a target frequency band and a frequency band identifier; wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report.

[0189] In some embodiments, when the configuration information includes a frequency band list and the frequency band list includes at least one frequency band, the frequency band identifier is a second index identifier, and the second index identifier indicates the second position in the frequency band list, wherein the fifth frequency band located at the second position in the frequency band list indicated by the second index identifier is the target frequency band corresponding to the CSI report.

[0190] In some embodiments, the structure of the CSI report is a direct link channel state information medium access control layer control element Sidelink CSI Reporting MAC CE structure, and the Sidelink CSI Reporting MAC CE structure includes a reserved bit, and the reserved bit is used to carry a frequency band identifier.

[0191] In some embodiments, the Sidelink CSI Reporting MAC CE structure includes multiple parts, each corresponding to a plurality of target frequency bands.

[0192] Communication device 1 is the second terminal:

[0193] The communication device 1 includes a sending module 11 and a receiving module 12 .

[0194] The sending module 11 is configured to send a CSI report request to a first terminal based on a unicast connection; and send configuration information to a second terminal;

[0195] The receiving module 12 is configured to receive a CSI report of a target frequency band sent by a second terminal, wherein the target frequency band is determined by the second terminal from a plurality of frequency bands.

[0196] In some embodiments, the configuration information indicates a first frequency band.

[0197] In some embodiments, the CSI report request indicates the second frequency band.

[0198] In some embodiments, the sending module 11 is specifically configured to send a CSI report request to the first terminal based on a unicast connection on the third frequency band.

[0199] In some embodiments, the configuration information includes a frequency band list including at least one frequency band.

[0200] In some embodiments, the configuration information further includes reporting delays corresponding to the frequency bands in the frequency band list.

[0201] In some embodiments, the CSI report request indicates a first index identifier, and the first index identifier indicates a first position in the frequency band list.

[0202] In some embodiments, the CSI report indicates a channel quality indicator CQI of a target frequency band and a frequency band identifier; wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report.

[0203] In some embodiments, when the configuration information includes a frequency band list and the frequency band list includes at least one frequency band, the frequency band identifier is a second index identifier, and the second index identifier indicates the second position in the frequency band list, wherein the fifth frequency band located at the second position in the frequency band list indicated by the second index identifier is the target frequency band corresponding to the CSI report.

[0204] In some embodiments, the structure of the CSI report is a Sidelink CSI Reporting MAC CE structure, which includes a reserved bit, and the reserved bit is used to carry a frequency band identifier.

[0205] In some embodiments, the Sidelink CSI Reporting MAC CE structure includes multiple parts, each corresponding to a plurality of target frequency bands.

[0206] Regarding the communication device 1 in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated on here.

[0207] The communication device 1 provided in the above embodiments of the present disclosure achieves the same or similar beneficial effects as the communication methods provided in some of the above embodiments, and will not be described in detail here.

[0208] See Figure 11 , Figure 11 1 is a schematic diagram of the structure of a communication device 1000 provided in an embodiment of the present disclosure. Communication device 1000 can be a first terminal, a second terminal, or a chip, a chip system, or a processor that supports the terminal in implementing the above-mentioned method. Communication device 1000 can be used to implement the method described in the above-mentioned method embodiment. For details, please refer to the description of the above-mentioned method embodiment.

[0209] The communication device 1000 may include one or more processors 1001. The processor 1001 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0210] Optionally, the communication device 1000 may further include one or more memories 1002, on which a computer program 1004 may be stored. The memory 1002 executes the computer program 1004 to enable the communication device 1000 to perform the method described in the above method embodiment. Optionally, the memory 1002 may also store data. The communication device 1000 and the memory 1002 may be provided separately or integrated together.

[0211] Optionally, the communication device 1000 may further include a transceiver 1005 and an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is configured to implement transceiver functions. The transceiver 1005 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function.

[0212] Optionally, the communication device 1000 may further include one or more interface circuits 1007. The interface circuit 1007 is configured to receive code instructions and transmit the code instructions to the processor 1001. The processor 1001 executes the code instructions to enable the communication device 1000 to perform the method described in the above method embodiment.

[0213] The communication device 1000 is a first terminal: the transceiver 1005 is used to execute Figure 2 S21 and S23 in Figure 4 S41 and S43 in; Figure 5 S51 and S53 in; Figure 6 S61 and S63 in; Figure 7 S71 and S73 in; Figure 8 S81 and S83 in the processor 1001; the processor 1001 is used to execute Figure 2 S22 in; Figure 3 S32 in; Figure 4 S42 in; Figure 5 S52 in; Figure 6 S62 in; Figure 7 S72 in; Figure 8 S82 in.

[0214] The communication device 1000 is a second terminal: the transceiver 1005 is used to execute Figure 9 S91 and S92 in it.

[0215] In one implementation, processor 1001 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0216] In one implementation, processor 1001 may store a computer program 1003. Computer program 1003, when executed on processor 1001, enables communication device 1000 to perform the method described in the above method embodiment. Computer program 1003 may be embedded in processor 1001, in which case processor 1001 may be implemented by hardware.

[0217] In one implementation, the communication device 1000 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0218] The communication device described in the above embodiments may be a terminal (such as the first terminal or the second terminal in the above method embodiment), but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may not be limited thereto. Figure 11The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0219] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0220] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0221] (3) ASIC, such as modem;

[0222] (4) Modules that can be embedded in other devices;

[0223] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network-side devices, cloud devices, artificial intelligence devices, etc.;

[0224] (6)Others, etc.

[0225] For cases where the communication device may be a chip or a chip system, see Figure 12 , is a structural diagram of a chip provided in an embodiment of the present disclosure.

[0226] The chip 1100 includes a processor 1101 and an interface 1103. There may be one or more processors 1101, and there may be more than one interface 1103.

[0227] For the case where the chip is used to implement the functions of the first terminal in the embodiment of the present disclosure:

[0228] The interface 1103 is used to receive code instructions and transmit them to the processor.

[0229] The processor 1101 is configured to execute code instructions to perform the CSI report acquisition method as described in some of the above embodiments.

[0230] For the case where the chip is used to implement the function of the second terminal in the embodiment of the present disclosure:

[0231] The interface 1103 is used to receive code instructions and transmit them to the processor.

[0232] The processor 1101 is configured to execute code instructions to perform the CSI report acquisition method as described in some of the above embodiments.

[0233] For the case where the chip is used to implement the functions of the network-side device in the embodiments of the present disclosure:

[0234] The interface 1103 is used to receive code instructions and transmit them to the processor.

[0235] The processor 1101 is configured to execute code instructions to execute the CSI report acquisition method as described in some of the above embodiments.

[0236] Optionally, the chip 1100 further includes a memory 1102 , which is used to store necessary computer programs and data.

[0237] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functionality for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present disclosure.

[0238] The embodiment of the present disclosure also provides a system for information transmission, which includes the aforementioned Figure 10 In the embodiment, the device for obtaining the CSI report of the first terminal and the device for obtaining the CSI report of the second terminal, or the system includes the aforementioned Figure 11 In the embodiment, the communication device serves as the first terminal and the communication device serves as the second terminal.

[0239] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0240] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0241] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0242] Those skilled in the art will understand that the various numerical numbers such as first and second involved in the present disclosure are only for the convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0243] The at least one in the present disclosure can also be described as one or more, and the multiple can be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0244] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values or representations of the parameters may also adopt other values or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0245] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0246] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0247] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0248] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A method for obtaining a channel state information (CSI) report, characterized in that: The method is performed by a first terminal, where the first terminal and a second terminal support multi-band communication, and the method includes: receiving sidelink control information (SCI) sent by the second terminal based on a unicast connection on a third frequency band, the SCI including a first CSI report request; determining the third frequency band as a target frequency band, wherein the third frequency band is one of multiple frequency bands; receiving configuration information sent by the second terminal; wherein the configuration information includes a reporting delay corresponding to the target frequency band; Sending a CSI report of the third frequency band to the second terminal; The method further comprises: receiving a second CSI report request sent by the second terminal based on the unicast connection on a fourth frequency band; determining the fourth frequency band as a target frequency band, wherein the fourth frequency band is another one of the multiple frequency bands; Sending a CSI report of the fourth frequency band to the second terminal.

2. The method according to claim 1, wherein The method further comprises: Start the CSI reporting timer.

3. The method according to claim 2, wherein The method further comprises: In response to the CSI report timer timing out, cancel sending the CSI report of the target frequency band to the second terminal; wherein the timing time of the CSI report timer is the reporting delay.

4. The method according to claim 2, wherein The method further comprises: In response to sending the generated CSI report corresponding to the target frequency band to the second terminal and the CSI report timer not timing out, stopping the countdown of the CSI report timer; wherein the timing time of the CSI report timer is the reporting delay.

5. The method according to any one of claims 1 to 4, characterized in that The CSI report indicates a channel quality indicator CQI of the target frequency band and a frequency band identifier; wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report.

6. The method according to claim 5, wherein In a case where the configuration information includes a frequency band list and the frequency band list includes at least one frequency band, the frequency band identifier is a second index identifier, and the second index identifier indicates a second position in the frequency band list, wherein the fifth frequency band located at the second position in the frequency band list indicated by the second index identifier is the target frequency band corresponding to the CSI report.

7. The method according to claim 5, wherein The structure of the CSI report is a direct link channel state information medium access control layer control element Sidelink CSI Reporting MAC CE structure, and the Sidelink CSIReporting MAC CE structure includes a reserved bit, and the reserved bit is used to carry the frequency band identifier.

8. The method according to claim 7, wherein The Sidelink CSI Reporting MAC CE structure includes multiple parts, each corresponding to the multiple target frequency bands.

9. A method for obtaining a channel state information (CSI) report, characterized in that: The method is performed by a second terminal, where the second terminal and the first terminal support multi-band communication, and the method includes: Sending an SCI to the first terminal based on a unicast connection on a third frequency band, where the SCI includes a first CSI report request; wherein the third frequency band is one of multiple frequency bands and is a target frequency band determined by the first terminal after receiving the first CSI report request; Sending configuration information to the first terminal; wherein the configuration information includes a reporting delay corresponding to the target frequency band; receiving a CSI report of the third frequency band sent by the first terminal; The method further comprises: Sending a second CSI report request to the first terminal based on the unicast connection on a fourth frequency band; wherein the fourth frequency band is another one of the multiple frequency bands, and the fourth frequency band is a target frequency band determined by the first terminal after receiving the second CSI report request; Receive a CSI report of the fourth frequency band sent by the first terminal.

10. The method according to claim 9, wherein The CSI report indicates a channel quality indicator CQI of the target frequency band and a frequency band identifier; wherein the frequency band identifier is used to determine the target frequency band corresponding to the CSI report.

11. The method according to claim 10, wherein In a case where the configuration information includes a frequency band list and the frequency band list includes at least one frequency band, the frequency band identifier is a second index identifier, and the second index identifier indicates a second position in the frequency band list, wherein the fifth frequency band located at the second position in the frequency band list indicated by the second index identifier is the target frequency band corresponding to the CSI report.

12. The method according to claim 10, wherein The structure of the CSI report is a Sidelink CSIReporting MAC CE structure, and the Sidelink CSI Reporting MAC CE structure includes a reserved bit, and the reserved bit is used to carry the frequency band identifier.

13. The method according to claim 12, wherein: The Sidelink CSI Reporting MAC CE structure includes multiple parts, each corresponding to the multiple target frequency bands.

14. A communication device, applied to a first terminal, wherein the first terminal and a second terminal support multi-band communication, characterized in that: include: a receiving module, configured to receive an SCI sent by the second terminal based on a unicast connection on a third frequency band, where the SCI includes a CSI report request; Determining the third frequency band as a target frequency band, wherein the third frequency band is one of multiple frequency bands; receiving configuration information sent by the second terminal; wherein the configuration information includes a reporting delay corresponding to the target frequency band; a sending module, configured to send the CSI report of the third frequency band to the second terminal; The receiving module is further configured to: receiving a second CSI report request sent by the second terminal based on the unicast connection on a fourth frequency band; determining the fourth frequency band as a target frequency band, wherein the fourth frequency band is another one of the multiple frequency bands; The sending module is further used for: Sending a CSI report of the fourth frequency band to the second terminal.

15. A communication device, applied to a second terminal, wherein the second terminal and the first terminal support multi-band communication, characterized in that: include: a sending module, configured to send, on a third frequency band, an SCI to a first terminal connected over a unicast connection, the SCI including a first CSI report request; wherein the third frequency band is one of multiple frequency bands and is a target frequency band determined by the first terminal after receiving the first CSI report request; and send configuration information to the first terminal; wherein the configuration information includes a reporting delay corresponding to the target frequency band; a receiving module, configured to receive the CSI report of the third frequency band sent by the first terminal; The sending module is further used for: Sending a second CSI report request to the first terminal based on the unicast connection on a fourth frequency band; wherein the fourth frequency band is another one of the multiple frequency bands, and the fourth frequency band is a target frequency band determined by the first terminal after receiving the second CSI report request; The receiving module is further configured to: Receive a CSI report of the fourth frequency band sent by the first terminal.

16. A communication device, characterized in that: The device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory to enable the device to perform the method according to any one of claims 1 to 13.

17. A communication device, characterized in that: include: processor and interface circuits; The interface circuit is used to receive code instructions and transmit them to the processor; The processor is configured to run the code instructions to perform the method according to any one of claims 1 to 13.

18. A computer-readable storage medium storing instructions, which, when executed, enable the method according to any one of claims 1 to 13 to be implemented.

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