Information transmission method, device and storage medium

Abstract

An information transmission method, a terminal device, a network device, and a storage medium in sidelink communication are provided. The information transmission method includes a first terminal device transmitting first indication information to a network device, the first indication information including at least one of acknowledgement / negative acknowledgement information, beam index information, channel quality indicator information, channel state indicator information, precoding matrix indicator information, rank indicator information, and power indicator information.

Description

[Technical field]

[0001] The present invention relates to the field of wireless communication technology, and in particular to an information transmission method, device and storage medium. [Background technology]

[0002] Fifth generation (5G, 5 th In the case of vehicle-to-everything (V2X) communications in New Radio (NR) Generation systems, the need to support autonomous driving has led to higher requirements being put forward for data exchange between vehicles, such as higher throughput, lower latency, higher reliability, wider coverage range, and more flexible resource allocation.

[0003] In NR V2X, transmission resources for transmitting sidelink data may be allocated by the network, and in sidelink unicast communication, when a sidelink data transmitting end transmits sidelink data to a receiving end, the sidelink data receiving end needs to transmit feedback information to a data transmitting end, and the data transmitting end needs to transmit the feedback information to a network device, so that the network device can set transmission parameters or allocate resources based on the feedback information. However, there is currently no effective solution for how the data transmitting end transmits feedback information to a network device. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to solve the above technical problems, the embodiments of the present invention provide an information transmission method, device, and storage medium that enable a data transmitting end to transmit feedback information transmitted from a data receiving end to a network device. [Means for solving the problem]

[0005] In a first aspect, an embodiment of the present invention provides an information transmission method, the method including: a first terminal device sending first indication information to a network device, the first indication information including first information, the first information including at least one of acknowledgement / negative acknowledgement information, beam index information, channel quality indicator information, channel state indicator information, precoding matrix indicator information, rank indication information, and power indication information; The acknowledgement / negative acknowledgement information is used to indicate whether sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device, The beam index information is used to indicate a beam to be used when the first terminal device transmits sidelink data to the second terminal device, The channel quality indicator information is used to indicate a channel quality between the first terminal device and the second terminal device, The channel state indicator information is used to indicate a channel state between the first terminal device and the second terminal device, The precoding matrix index information is used to indicate precoding information used when the first terminal device transmits sidelink data to the second terminal device, The rank indication information is used to indicate rank information to be used when the first terminal device transmits sidelink data to the second terminal device, The power indication information is used to indicate power up or down, or power remaining information.

[0006] In a second aspect, an embodiment of the present invention provides an information transmission method, the method including: a network device receiving first indication information sent from a first terminal device, the first indication information including first information, the first information being used by the network device to set a transmission parameter or allocate a resource; The first information includes at least one of positive / negative acknowledgement information, beam index information, channel quality indicator information, channel state indicator information, precoding matrix indicator information, rank indication information, and power indication information; The acknowledgement / negative acknowledgement information is used to indicate whether sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device, The beam index information is used to indicate a beam to be used when the first terminal device transmits sidelink data to the second terminal device, The channel quality indicator information is used to indicate a channel quality between the first terminal device and the second terminal device, The channel state indicator information is used to indicate a channel state between the first terminal device and the second terminal device, The precoding matrix index information is used to indicate precoding information used when the first terminal device transmits sidelink data to the second terminal device, The rank indication information is used to indicate rank information to be used when the first terminal device transmits sidelink data to the second terminal device, The power indication information is used to indicate power up or down, or power remaining information.

[0007] In a third aspect, an embodiment of the present invention provides a first terminal device, the first terminal device comprising a first transmitting unit; The first sending unit is configured to send first indication information including first information to the network device, the first information including at least one of acknowledgement / negative acknowledgement information, beam index information, channel quality indicator information, channel state indicator information, precoding matrix indicator information, rank indication information, and power indication information; The acknowledgement / negative acknowledgement information is used to indicate whether sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device, The beam index information is used to indicate a beam to be used when the first terminal device transmits sidelink data to the second terminal device, The channel quality indicator information is used to indicate a channel quality between the first terminal device and the second terminal device, The channel state indicator information is used to indicate a channel state between the first terminal device and the second terminal device, The precoding matrix index information is used to indicate precoding information used when the first terminal device transmits sidelink data to the second terminal device, The rank indication information is used to indicate rank information to be used when the first terminal device transmits sidelink data to the second terminal device, The power indication information is used to indicate power up or down, or power remaining information.

[0008] In a fourth aspect, an embodiment of the present invention provides a network device, the network device comprising: a fourth receiving unit; The fourth receiving unit is configured to receive first indication information transmitted from a first terminal device, the first information being used by the network device to set transmission parameters or allocate resources, and the first information includes at least one of acknowledgement / negative acknowledgement information, beam index information, channel quality indicator information, channel state indicator information, precoding matrix indicator information, rank indication information, and power indication information; The acknowledgement / negative acknowledgement information is used to indicate whether sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device, The beam index information is used to indicate a beam to be used when the first terminal device transmits sidelink data to the second terminal device, The channel quality indicator information is used to indicate a channel quality between the first terminal device and the second terminal device, The channel state indicator information is used to indicate a channel state between the first terminal device and the second terminal device, The precoding matrix index information is used to indicate precoding information used when the first terminal device transmits sidelink data to the second terminal device, The rank indication information is used to indicate rank information to be used when the first terminal device transmits sidelink data to the second terminal device, The power indication information is used to indicate power up or down, or power remaining information.

[0009] In a fifth aspect, an embodiment of the present invention provides a terminal device, the terminal device comprising a processor and a memory adapted to store a computer program executable in the processor, the processor being adapted to perform steps in an information transmission method executed by the first terminal device when executing the computer program.

[0010] In a sixth aspect, an embodiment of the present invention provides a network device, the network device comprising a processor and a memory adapted to store a computer program executable in the processor, the processor being adapted to perform steps in an information transmission method implemented by the network device when executing the computer program.

[0011] In a seventh aspect, an embodiment of the present invention provides a storage medium, wherein an executable program is stored in the storage medium, and when the executable program is executed by a processor, an information transmission method is realized which is performed by the first terminal device.

[0012] In an eighth aspect, an embodiment of the present invention provides a storage medium, wherein an executable program is stored in the storage medium, and when the executable program is executed by a processor, the information transmission method is realized to be performed by the network device. Effect of the Invention

[0013] According to the information transmission method, device, and storage medium of the embodiments of the present invention, a first terminal device transmits first indication information to a network device, the first indication information including first information, and the first information is feedback information for sidelink data transmitted between the first terminal device and the second terminal device. Thus, in NR V2X, a data transmitting end transmits feedback information for sidelink data to a network device, so that the network device can schedule resources or set transmission parameters based on the first information. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of a main part of a communication system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic diagram of the processing process of data transmission in mode 3 of the present invention. [Diagram 3] FIG. 3 is a schematic diagram of the processing process of data transmission in mode 4 of the present invention. [Figure 4] FIG. 4 is a schematic diagram of a selectable processing process of an information transmission method applied to a first terminal device according to an embodiment of the present invention. [Diagram 5] FIG. 5 is a schematic diagram of a selectable processing process of an information transmission method applied to a network device according to an embodiment of the present invention. [Figure 6] FIG. 6 is a schematic diagram showing the configuration of a main part of a first terminal device according to an embodiment of the present invention. [Figure 7] FIG. 7 is a schematic diagram showing the configuration of a main part of a network device according to an embodiment of the present invention. [Figure 8] FIG. 8 is a schematic diagram showing the main hardware configuration of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] In order to make the characteristics and technical contents of the embodiments of the present invention more clearly understandable, the implementation of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which are for reference and explanation only and are not intended to limit the embodiments of the present invention.

[0016] The information transmission method according to the embodiments of the present application may be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, a LTE Frequency Division Duplex (FDD) system, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, or a 5G system.

[0017] Exemplarily, a communication system 100 applied to an embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (also referred to as a communication terminal or terminal). The network device 110 may provide communication coverage in a specific geographical area and communicate with the terminal device in the coverage area. Optionally, the network device 110 may be a base station (BTS, Base Transceiver Station) in a GSM system or a CDMA system, a base station (NB, Node B) in a WCDMA system, an evolved base station (eNB or eNodeB, Evolutional Node B) in an LTE system, a base station gNB in ​​a new radio system, or a radio control device in a cloud radio access network (CRAN, Cloud Radio Access Network). Alternatively, the network device may be a mobile switching center, a relay station, an access point, an in-vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device in a 5G network, or a network device in a future public land mobile network (PLMN), etc.

[0018] The communication system 100 further comprises at least one terminal device 120 within the coverage area of ​​the network device 110. As used herein, a "terminal device" includes, but is not limited to, those that connect via wired lines, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable, and / or other data connections / networks, and / or wireless interfaces, such as cellular networks, Wireless Local Area Networks (WLAN) digital television networks, such as DVB-H networks, satellite networks, AM-FM broadcast transmitters, and / or devices configured to transmit and receive communication signals of other terminal devices, and / or Internet of Things (IoT) devices. A terminal device configured to communicate via a wireless interface may be referred to as a "wireless communication terminal," "wireless terminal," or "mobile terminal." Examples of mobile terminals include, but are not limited to, satellite or cellular telephones, Personal Communications System (PCS) terminals that may combine cellular radiotelephone and data processing, fax and data communication capabilities, wireless telephones, pagers, PDAs that may have Internet / intranet access, web browsers, notepads, calendars and / or Global Positioning System (GPS) receivers, and other electronic devices with conventional laptop and / or palmtop receivers or radiotelephone transceivers. Terminal equipment may refer to an access terminal, User Equipment (UE), user element, subscriber station, mobile station, traverser, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device.The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a mobile terminal with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolving PLMN, etc.

[0019] Alternatively, the terminal devices 120 can communicate with each other in a Device to Device (D2D) manner.

[0020] Alternatively, a 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0021] 1 illustrates one network device and two terminal devices. Alternatively, the communication system 100 may include multiple network devices, and the coverage range of each network device may include other numbers of terminal devices, which is not limited in the embodiment of the present application.

[0022] Optionally, the communication system 100 may further comprise other network entities, such as a network controller, a mobility management entity, etc., which are not limiting of the embodiments of the present application.

[0023] It should be understood that in the embodiment of the present application, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in Fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the above specific devices, and detailed description is omitted here. The communication device may further include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., and the embodiment of the present application is not limited thereto.

[0024] Before describing the embodiments of the present invention in detail, a brief description will be given of a vehicle-to-object communication system.

[0025] The vehicle-to-thing communication system is a side link (SL) transmission technology based on device-to-device (D2D) communication. Unlike the conventional LTE system in which communication data is transmitted and received by base stations, the communication data in the vehicle-to-thing communication system uses direct device-to-device communication, resulting in higher spectral efficiency and lower transmission delay.

[0026] V2X was standardized in 3GPP Rel-14, which defined two transmission modes: Mode 3 and Mode 4.

[0027] In mode 3, the data transmission process is shown in FIG. 2, in which the sidelink transmission resources of the vehicle-mounted terminal are allocated by the base station, and the vehicle-mounted terminal transmits data in the sidelink according to the resources allocated by the base station, and the base station may allocate resources to the terminal for one-time transmission, or may allocate resources to the terminal for semi-static transmission.

[0028] In mode 4, the data transmission process is shown in FIG. 3, and the vehicle-mounted terminal uses a sensing and reservation transmission mode. The vehicle-mounted terminal obtains a set of available transmission resources in the resource pool through a sensing mode, and the terminal randomly selects one resource from the set to transmit sidelink data. Because the services in the vehicle-to-object communication system have periodic characteristics, the terminal generally uses a semi-static transmission mode, that is, after selecting one transmission resource, the terminal continuously uses the resource for multiple transmission periods, thereby reducing the probability of resource reselection and resource collision. The terminal reserves the next transmission resource by including the information of the next transmission resource in the control information transmitted this time, which allows other terminals to detect the control information of the user and determine whether the resource has been reserved and used by the user, thereby achieving the purpose of reducing resource collision.

[0029] In order to support autonomous driving, NR-V2X has proposed higher requirements for data exchange between vehicles, such as higher throughput, lower latency, higher reliability, wider coverage range, and more flexible resource allocation.

[0030] In NR-V2X, it is necessary to further support multiple transmission methods, such as unicast, groupcast, and broadcast. When performing unicast transmission, the data receiving terminal device needs to transmit feedback information, such as acknowledgement / negative acknowledgement (ACK / NACK) information, channel quality indicator (CQI) information, etc., to the data transmitting terminal device, and the data transmitting terminal device can adjust the modulation and coding scheme (MCS) level based on the feedback information of the data receiving terminal device to determine whether retransmission, etc. is required.

[0031] In NR-V2X, the sidelink transmission resource may be allocated by the network device. In the sidelink, the data receiving terminal device transmits feedback information to the data transmitting terminal device, and the feedback information includes ACK / NACK, CQI, channel state information (CSI), power adjustment information, etc., and the transmitting terminal device needs to transmit the feedback information to the network device in order to assist the network device in resource scheduling and transmission parameter setting. Based on the information fed back by the data transmitting terminal device, the network device judges whether the data in the sidelink is correctly received by the data receiving terminal device, and thereby allocates resources for new data transmission or retransmission to the data transmitting terminal device. Alternatively, the data transmitting terminal device transmits information such as CSI / CQI to the network device to assist the network device in setting transmission parameters, such as MCS used by the sidelink. However, there is currently no effective solution as to how the data transmitting terminal device transmits feedback information to the network device.

[0032] Based on the above problem, a selectable processing process of an information transmission method applied to a terminal device in an embodiment of the present invention includes a step S201 in which a first terminal device sends first indication information to a network device, as shown in FIG. 4.

[0033] In some embodiments, the first indication information comprises first information, the first information comprising at least one of the following information:

[0034] 1) ACK / NACK information The ACK / NACK information is used to indicate whether the sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device.

[0035] 2) Beam index information The beam index information is used to indicate the beam to be used when the first terminal device transmits sidelink data to the second terminal device.

[0036] 3)CQI information The CQI information is used to indicate the channel quality between the first terminal device and the second terminal device.

[0037] 4)CSI information The CSI information is used to indicate the channel condition between the first terminal device and the second terminal device.

[0038] 5) Precoding Matrix Indicator (PMI) information The precoding matrix index information is used to indicate precoding information to be used when the first terminal device transmits sidelink data to the second terminal device.

[0039] 6) Rank Indication Information The rank indication information is used to indicate rank information to be used when the first terminal device transmits sidelink data to the second terminal device.

[0040] 7) Power instruction information The power indication information is used to indicate power up or down, or power remaining information.

[0041] 8) Candidate resource set The candidate resource set is an available transmission resource set acquired by the first terminal device through sensing in the sidelink. For example, when a network device allocates sidelink transmission resources to the first terminal device in a first resource pool, the first terminal device determines the candidate resource set in a sensing manner in the first resource pool before the network device allocates transmission resources to the first terminal device, and each resource in the candidate resource set is a transmission resource available for the first terminal device to transmit sidelink data. For example, the candidate resource set is a set of N transmission resources with the lowest energy in one resource selection window. The first terminal device transmits the candidate resource set to a network device to assist the network device in resource scheduling.

[0042] The specific implementation manner of the first terminal device sending the first indication information to the network device includes at least: The first terminal device transmits an uplink control channel including the first indication information to the network device; or The first terminal device transmits an uplink data channel including the first indication information to the network device; or The first terminal device transmits uplink Radio Resource Control (RRC) signaling carrying the first information to the network device; or The first terminal device transmits a scheduling request (SR) including the first indication information to a network device; or The first terminal device transmits a Buffer Status Report (BSR) including the first indication information to a network device.

[0043] When the first terminal device transmits the first indication information to the network device through an uplink control channel transmission, the first indication information may be carried by a Physical Uplink Control Channel (PUCCH), and since different PUCCH formats can transmit different numbers of information bits, different contents included in the first indication information may be carried in corresponding PUCCH formats.

[0044] For example, if the number of bits included in the first indication information is equal to or less than 2, the first indication information may be carried in a first PUCCH format. If the number of bits included in the first indication information is greater than 2, the first indication information may be carried in a second PUCCH format.

[0045] As an option, when the first terminal device transmits the first indication information to the network device via transmitting an uplink control channel, the first terminal device further receives downlink control information (DCI, Downlink Control Information) transmitted from the network device, the downlink control information is used to allocate sidelink transmission resources to the first terminal device, and the downlink control information includes second indication information for determining transmission resources of the uplink control channel.

[0046] For example, the network device sends configuration information to the first terminal device for configuring a transmission resource set of PUCCH. The network device allocates sidelink transmission resources to the first terminal device through DCI, and the DCI may include second indication information, and the second indication information is used to determine the transmission resource of PUCCH in combination with the configuration information. Specifically, for example, the second indication information includes one index information and is used to determine one transmission resource from a plurality of PUCCH transmission resources configured in the network. Or, the second indication information is used to indicate the time interval between PUCCH and the DCI, and may further indicate the frequency domain resource of PUCCH. Therefore, the transmission resource of PUCCH used to transmit feedback information can be determined.

[0047] The above description is given by taking the example of the case where the configuration information is used to configure the transmission resource set of the PUCCH, but in a specific implementation, the configuration information may also be used to configure the transmission resource set of the PUSCH. Specifically, the network device allocates sidelink transmission resources to the first terminal device through DCI, and the DCI may include second indication information, and the second indication information is used to determine the transmission resource of the PUSCH in combination with the configuration information. Specifically, for example, the second indication information includes one index information and is used to determine one transmission resource from a plurality of PUSCH transmission resources configured in the network. Or, the second indication information is used to indicate the time interval between the PUSCH and the DCI, and may further indicate the frequency domain resource of the PUSCH. Therefore, the transmission resource of the PUSCH used to transmit the feedback information can be determined.

[0048] Alternatively, when the first terminal device transmits the first indication information to the network device through transmission of an uplink data channel, the first indication information is carried on the uplink data channel by puncturing the uplink data channel. For example, when the first indication information includes ACK / NACK information, the ACK / NACK information that needs to be transmitted to the network device may be coded, and the coded bits are used to puncture resources of a PUSCH channel, i.e., the coded symbols are used to replace the PUSCH data symbols.

[0049] For example, in an LTE system, the frame structure of the PUSCH is such that the 4th and 11th time domain symbols in a subframe are used to transmit a demodulation reference signal (DMRS), and other time domain symbols than the 4th and 11th time domain symbols may be used to transmit the PUSCH. If the frequency domain resources for transmitting the PUSCH allocated by the network to the first terminal device are four physical resource blocks (PRBs), the first terminal device first maps the PUSCH data to all transmission resources other than the DMRS symbols, and then substitutes the PUSCH data symbols with symbols after ACK / NACK coding, i.e., punctures the PUSCH data using the ACK / NACK symbols. For example, the PUSCH data in the symbol next to the first DMRS time domain symbol (i.e., the 5th time domain symbol) is substituted with the ACK / NACK symbol after coding.

[0050] As an option, when the first terminal device transmits the first indication information to the network device via transmission of an uplink data channel, the first indication information is carried on the uplink data channel in a rate matching manner.

[0051] For example, the terminal device determines the number of resources occupied by the information to be fed back based on parameter settings (e.g., MCS, etc.), maps the coded feedback information to the corresponding transmission resources, and maps the PUSCH data and the reference signal to other resources. The resources that can be used by the PUSCH data are the transmission resources allocated by the network other than the resources occupied by the feedback information and the resources occupied by the pilot signal, etc.

[0052] As an option, when the first terminal device transmits the first indication information to the network device through the transmission of an SR, the first indication information is taken as an example of ACK / NACK information, the network device sets two sets of SR resources for the first terminal device, and when the first terminal device transmits an SR in the first set of SR resources, it indicates that what is transmitted by the first terminal device is ACK information, and when the first terminal device transmits an SR in the second set of SR resources, it indicates that what is transmitted by the first terminal device is NACK information. According to the above embodiment, the first terminal device can implicitly transmit ACK information or NACK information to the network device.

[0053] As an option, the first indication information further includes at least one of identifier information of the second terminal device, group identifier information, and first identifier information; The group identifier information is identifier information of a group in which the first terminal device is located, and the first identifier information is link identifier information for unicast communication between the first terminal device and the second terminal device.

[0054] Optionally, the first indication information further includes at least one of: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indicator (RSSI), interference indication information, and path loss information.

[0055] As can be understood, in the above solution, RSRP is sidelink RSRP, RSRQ is sidelink RSRQ, RSSI is sidelink RSSI, interference indication information is used to indicate sidelink interference, and path loss information indicates sidelink path loss between the first terminal device and the second terminal device.

[0056] In another embodiment, before the first terminal device performs step S201, the method further comprises: The first terminal device includes a step S200 of receiving a first sidelink channel including first indication information transmitted from a second terminal device.

[0057] The first sidelink channel may be used to transmit a physical sidelink control channel (PSCCH), a physical sidelink shared channel (PSSCH), or a sidelink feedback channel, etc.

[0058] For example, the second terminal device receives sidelink data transmitted from the first terminal device and transmits feedback information, such as ACK / NACK information or CSI / CQI information, to the first terminal device.

[0059] As an option, the second terminal device receives the sidelink channel or the measurement signal transmitted from the first terminal device, and obtains information such as CSI, CQI, RI, PMI, etc. in the first indication information, or the second terminal device obtains information such as RSRP, RSRQ, RSSI, path loss information, interference information, etc. included in the first indication information through measurement. The second terminal device conveys the first indication information obtained by any one or two of the above two methods on the first sidelink channel and transmits it to the first terminal device, and the first terminal device transmits the first indication information to the network device.

[0060] In a further embodiment, before the first terminal device executes step S201, the method further comprises: The method includes a step S200' in which a first terminal device receives a second sidelink channel and / or a measurement signal transmitted from the second terminal device, and the first terminal device obtains the first indication information based on the second sidelink channel and / or the measurement signal.

[0061] The second sidelink channel may be a PSCCH, a PSSCH, a sidelink feedback channel, a Physical Sidelink Discovery Channel (PSDCH), or a reference signal, such as a Channel State Information Reference Signal (CSI-RS) or a Sounding Reference Signal (SRS), etc.

[0062] The measurement signals include at least one of a Demodulation Reference Signal (DMRS, Demodulation Reference Signal), a Channel State Information Reference Signal (CSI-RS, Channel State Indicator Reference Signal), a Sounding Reference Signal, and a Phase Tracking Reference Signal (PT-RS, Phase Tracking Reference Signal).

[0063] In a specific implementation, the first terminal device acquires information such as CSI, CQI, RI, PMI, etc. in the first indication information based on the second sidelink channel and / or the measurement signal transmitted from the second terminal device. Alternatively, the first terminal device acquires information such as RSRP, RSRQ, RSSI, path loss information, interference information, etc. included in the first indication information based on the second sidelink channel and / or the measurement signal transmitted from the second terminal device. In order for the network device to perform effective and reasonable resource scheduling, the first terminal device transmits the acquired first indication information to the network device.

[0064] The selectable processing steps of the information transmission method applied to the network device according to the embodiment of the present invention are shown in FIG. The method includes a step S301 in which the network device receives first indication information sent from a first terminal device.

[0065] In a specific implementation, the specific implementation manner of the network device receiving the first indication information sent from the first terminal device is at least: The network device receives an uplink control channel including the first indication information transmitted from a first terminal device; or The network device receives an uplink data channel including the first indication information transmitted from a first terminal device; or The network device receives uplink RRC signaling transmitted from a first terminal device, the uplink RRC signaling carrying the first information; or The network device receives an SR including the first indication information transmitted from a first terminal device; or The method includes receiving a BSR including the first indication information, the BSR being sent by the network device from a first terminal device.

[0066] Here, the relevant explanation about the first instruction information is the same as the relevant explanation about the first instruction information in step S201, and the manner in which the network device obtains the first instruction information is the same as the manner in which the first terminal device sends the first instruction information in step S201, so detailed explanations are omitted here.

[0067] In addition, in an embodiment of the present invention, the first terminal device may be a data transmitting end when performing data transmission in a vehicle-to-object communication system, and the second terminal device may be a data receiving end when performing data transmission in a vehicle-to-object communication system.

[0068] An embodiment of the present invention further provides an information transmission method applied to a communication system, the communication system including a first terminal device, a second terminal device and a network device, the first terminal device being a data sending end in a vehicle-to-object communication system, and the second terminal device being a data receiving end in the vehicle-to-object communication system, the method including the following steps:

[0069] Step 1: A second terminal device transmits first indication information to a first terminal device.

[0070] In some embodiments, the second terminal device transmits a first sidelink channel including the first indication information to the first terminal device.

[0071] In another embodiment, the second terminal device transmits a second sidelink channel to the first terminal device, and the first terminal device obtains the first indication information based on the second sidelink channel.

[0072] Here, the first sidelink channel and the second sidelink channel may be a PSCCH, a PSSCH, or a sidelink feedback channel, etc.

[0073] Step 2: the first terminal device sends the first indication information to a network device.

[0074] Step 3, the network device receives first indication information.

[0075] In an embodiment of the present invention, the network device sets transmission parameters or allocates resources according to the received first indication information.

[0076] An embodiment of the present invention further provides a first terminal device, the structure of which is as shown in FIG. 6 : The network device includes a first sending unit 401 configured to send first indication information to the network device.

[0077] In some embodiments, the first information includes at least one of the following information:

[0078] 1) ACK / NACK information The ACK / NACK information is used to indicate whether the sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device.

[0079] 2) Beam index information The beam index information is used to indicate the beam to be used when the first terminal device transmits sidelink data to the second terminal device.

[0080] 3)CQI information The CQI information is used to indicate the channel quality between the first terminal device and the second terminal device.

[0081] 4)CSI information The CSI information is used to indicate the channel condition between the first terminal device and the second terminal device.

[0082] 5) PMI information The PMI information is used to indicate precoding information to be used when the first terminal device transmits sidelink data to the second terminal device.

[0083] 6) Rank Instruction Information The rank indication information is used to indicate rank information to be used when the first terminal device transmits sidelink data to the second terminal device.

[0084] 7) Power instruction information The power indication information is used to indicate power up or down, or power remaining information.

[0085] 8) Candidate resource set The candidate resource set is an available transmission resource set acquired by the first terminal device through sensing in the sidelink. For example, the network device allocates sidelink transmission resources to the first terminal device in a first resource pool, and before the network device allocates transmission resources to the first terminal device, the first terminal device determines the candidate resource set in the first resource pool through a sensing manner, and each resource in the candidate resource set is a transmission resource available for the first terminal device to transmit sidelink data, for example, the candidate resource set is a set of N transmission resources with the lowest energy in one resource selection window. The first terminal device transmits the candidate resource set to the network device to assist the network device in resource scheduling.

[0086] As an option, the first indication information further includes at least one of identifier information of the second terminal device, group identifier information, and first identifier information, where the group identifier information is identifier information of a group in which the first terminal device is located, and the first identifier information is link identifier information for unicast communication between the first terminal device and the second terminal device.

[0087] Optionally, the first indication information further includes at least one of RSRP, RSRQ, RSSI, interference indication information and path loss information.

[0088] In one embodiment, the first sending unit 401 is configured to transmit an uplink control channel containing the first indication information to the network device.

[0089] At this time, the first terminal device further includes a first receiving unit 402, and the first receiving unit 402 is configured to receive downlink control information including second instruction information, the second instruction information is used to determine the transmission resource of the uplink control channel, and the downlink control information is used to allocate sidelink transmission resource to the first terminal device.

[0090] In one embodiment, the first sending unit 401 is configured to transmit an uplink data channel containing the first indication information to the network device.

[0091] The first indication information is carried on the uplink data channel by puncturing the uplink data channel, or the first indication information is carried on the uplink data channel in a rate matching manner.

[0092] In one embodiment, the first sending unit 401 is configured to send uplink radio resource control signaling carrying the first information to the network device.

[0093] In one embodiment, the first sending unit 401 is configured to send a scheduling request including the first indication information to a network device.

[0094] In one embodiment, the first sending unit 401 is configured to send a buffer status report, which includes the first indication information, to a network device.

[0095] In one embodiment, the first terminal device further comprises a second receiving unit 403 configured to receive a first sidelink channel transmitted from the second terminal device, the first sidelink channel including the first indication information.

[0096] In one embodiment, the first terminal device further includes a third receiving unit 404, which is configured to receive a second sidelink channel and / or a measurement signal transmitted from the second terminal device, and obtains the first indication information based on the second sidelink channel and / or the measurement signal.

[0097] The first sidelink channel and the second sidelink channel may be a PSCCH, a PSSCH, or a sidelink feedback channel, etc.

[0098] An embodiment of the present invention further provides a network device, the structure of which is as shown in FIG. 7, comprising: a fourth receiving unit 501; The fourth receiving unit 501 is configured to receive first indication information sent from a first terminal device, the first information being used by the network device to set transmission parameters or allocate resources.

[0099] In some embodiments, the first information includes at least one of the following information:

[0100] 1) ACK / NACK information The ACK / NACK information is used to indicate whether the sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device.

[0101] 2) Beam index information The beam index information is used to indicate the beam to be used when the first terminal device transmits sidelink data to the second terminal device.

[0102] 3)CQI information The CQI information is used to indicate the channel quality between the first terminal device and the second terminal device.

[0103] 4)CSI information The CSI information is used to indicate the channel condition between the first terminal device and the second terminal device.

[0104] 5) PMI information The PMI information is used to indicate precoding information to be used when the first terminal device transmits sidelink data to the second terminal device.

[0105] 6) Rank Indication Information The rank indication information is used to indicate rank information to be used when the first terminal device transmits sidelink data to the second terminal device.

[0106] 7) Power instruction information The power indication information is used to indicate power up or down, or power remaining information.

[0107] 8) Candidate resource set The candidate resource set is an available transmission resource set acquired by the first terminal device through sensing in the sidelink. For example, the network device allocates sidelink transmission resources to the first terminal device in a first resource pool, and before the network device allocates transmission resources to the first terminal device, the first terminal device determines the candidate resource set in the first resource pool through a sensing manner, and each resource in the candidate resource set is a transmission resource available for the first terminal device to transmit sidelink data, for example, the candidate resource set is a set of N transmission resources with the lowest energy in one resource selection window. The first terminal device transmits the candidate resource set to the network device to assist the network device in resource scheduling.

[0108] As an option, the first indication information further includes at least one of identifier information of the second terminal device, group identifier information, and first identifier information.

[0109] The group identifier information is identifier information of a group in which the first terminal device is located, and the first identifier information is link identifier information for unicast communication between the first terminal device and the second terminal device.

[0110] Optionally, the first indication information further includes at least one of RSRP, RSRQ, RSSI, interference indication information and path loss information.

[0111] In one embodiment, the fourth receiving unit 501 is configured to receive an uplink control channel sent from a first terminal device and including the first indication information.

[0112] At this time, the network device further includes a second transmitting unit 502, which is configured to transmit downlink control information to the first terminal device, the downlink control information including second indication information, the second indication information being used for determining transmission resources of the uplink control channel, and the downlink control information being used for allocating sidelink transmission resources to the first terminal device.

[0113] In one embodiment, the fourth receiving unit 501 is configured to receive an uplink data channel transmitted from a first terminal device and including the first indication information.

[0114] The first indication information is carried on the uplink data channel by puncturing the uplink data channel, or the first indication information is carried on the uplink data channel in a rate matching manner.

[0115] In one embodiment, the fourth receiving unit 501 is configured to receive uplink radio resource control signaling transmitted from a first terminal device and carrying the first information.

[0116] In one embodiment, the fourth receiving unit 501 is configured to receive an SR including the first indication information sent from a first terminal device.

[0117] In one embodiment, the fourth receiving unit 501 is configured to receive a BSR sent from a first terminal device, the BSR including the first indication information.

[0118] In the above embodiment of the present invention, the first information is feedback information for sidelink data transmitted between the first terminal device and the second terminal device, the second terminal device transmits the feedback information to the first terminal device, and the first terminal device transmits the feedback information to the network device, so that in NR V2X, the data transmitting end transmits the feedback information for the sidelink data to the network device, so that the network device can schedule resources or set transmission parameters according to the feedback information.

[0119] An embodiment of the present invention further provides a terminal device, the terminal device comprising a processor and a memory used for storing a computer program executable in the processor, the processor being used for executing steps in an information transmission method executed by the first terminal device when executing the computer program.

[0120] An embodiment of the present invention further provides a network device, the network device comprising a processor and a memory adapted to store a computer program executable in the processor, the processor being adapted to perform steps in an information transmission method implemented by the network device when executing the computer program.

[0121] FIG. 8 is a schematic diagram of the main hardware configuration of an electronic device (network device or first terminal device) according to an embodiment of the present invention. The electronic device 700 includes at least one processor 701, a memory 702, and at least one network interface 704. The components of the electronic device 700 are coupled together by a bus system 705. As will be understood, the bus system 705 is used to realize the connection and communication between these components. The bus system 705 includes a data bus, a power bus, a control bus, and a status signal bus, but for the sake of clarity, all the various buses are referred to as the bus system 705 in FIG. 8.

[0122] As will be appreciated, memory 702 may be volatile or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), ferromagnetic random access memory (FRAM), Flash Memory, magnetic memory, optical disk, or Compact Disc Read-Only Memory (CD-ROM). The magnetic memory may be disk memory or magnetic tape memory. The volatile memory may be Random Access Memory (RAM) used as an external cache memory.By way of example and not limitation, many types of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), SyncLink dynamic random access memory (SLDRAM), and direct Rambus random access memory (DRRAM). Memory 702 as described in embodiments of the invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0123] In an embodiment of the invention, memory 702 is used to store various types of data to support the operation of electronic device 700. Examples of these data include any computer programs, such as application programs 7022, for operating on electronic device 700. Programs implementing methods of embodiments of the invention may be included in application programs 7022.

[0124] The methods disclosed in the above embodiments of the present invention may be applied to the processor 701 or may be realized by the processor 701. The processor 701 may be an integrated circuit chip having a signal processing function. In the process of realization, each step of the above method may be performed by an integrated logic circuit of hardware in the processor 701 or an instruction in the form of software. The processor 701 may be a general-purpose processor, a digital signal processor (DSP) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc. The processor 701 may realize or execute each method, step, and logic block disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor, or any ordinary processor, etc. The steps of the methods disclosed in the embodiments of the present invention may be directly embodied to be performed by a hardware decoding processor, or a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in the memory 702, and the processor 701 reads information in the memory 702 and performs the steps of the above method in combination with the hardware.

[0125] In an exemplary embodiment, electronic device 700 may be implemented with one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, MPUs, or other electronic components to perform the methods described above.

[0126] An embodiment of the present application further provides a computer-readable storage medium, which is used to store a computer program.

[0127] As an option, the computer-readable storage medium may be applied to the network device of the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, detailed description is omitted here.

[0128] Alternatively, the computer-readable storage medium may be applied to a terminal device of the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. For the sake of brevity, detailed descriptions are omitted here.

[0129] As will be understood, in the above examples, " / " means "or", for example "A / B" indicates "A or B".

[0130] The present invention has been described with reference to flowcharts and / or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing apparatus to produce a machine. The instructions executed by the processor of the computer or other programmable data processing apparatus thereby produce an apparatus for implementing the functionality specified in a process or processes in the flowcharts and / or a block or blocks in the block diagrams.

[0131] These computer program instructions may be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture that includes an instruction apparatus that implements the functions specified in a process or processes in the flowcharts and / or a block or blocks in the block diagrams.

[0132] These computer program instructions may then be uploaded into a computer or other programmable data processing apparatus to cause the computer or other programmable apparatus to perform a series of operational steps to generate a computer implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the function specified in the process or processes in the flowcharts and / or in the block or blocks in the block diagrams.

[0133] The above description is merely a preferred embodiment of the present invention, and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of protection of the present invention.

Claims

1. 1. A method for transmitting information, comprising: A first terminal device receives a second sidelink channel transmitted from a second terminal device, and the first terminal device acquires first information based on information of the second sidelink channel; The first terminal device transmits first information to a network device; the first information includes acknowledgement / negative acknowledgement (ACK / NACK) information; The ACK / NACK information is used to indicate whether sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device, The method further comprises: The first terminal device receives downlink control information transmitted from the network device, the downlink control information including second indication information, and the second indication information is used to determine a transmission resource of an uplink control channel (PUCCH); The first terminal device transmits first information to a network device, An information transmission method, comprising: the first terminal device transmitting the PUCCH including the first information to the network device.

2. The second indication information is used to determine a transmission resource of the PUCCH, The method of claim 1 , wherein the second indication information includes index information, and the index information is used to determine one transmission resource from a plurality of PUCCH transmission resources configured in a network device.

3. The method of claim 1 , wherein the downlink control information is used to allocate sidelink transmission resources to the first terminal device.

4. The first terminal device transmits first information to a network device, The method of claim 1 , further comprising: the first terminal device transmitting an uplink data channel (PUSCH) including the first information to the network device.

5. 1. A method for transmitting information, comprising: a network device receives first information transmitted from a first terminal device, a second sidelink channel transmitted from a second terminal device is received by the first terminal device, the first information is obtained by the first terminal device based on information of the second sidelink channel, and the first information is used by the network device to set transmission parameters or allocate resources; the first information includes acknowledgement / negative acknowledgement (ACK / NACK) information; The ACK / NACK information is used to indicate whether sidelink data transmitted from the first terminal device to the second terminal device is correctly received by the second terminal device, The method further comprises: The network device transmits downlink control information including second indication information to the first terminal device, and the second indication information is used to determine a transmission resource of an uplink control channel (PUCCH); The receiving of first information by the network device includes: The network device receives the PUCCH including the first information transmitted from a first terminal device.

6. The second indication information is used to determine a transmission resource of the PUCCH, The method according to claim 5 , wherein the second indication information includes index information, and the index information is used to determine one transmission resource from a plurality of PUCCH transmission resources configured in a network device.

7. The method of claim 5 , wherein the downlink control information is used to allocate sidelink transmission resources to the first terminal device.

8. The receiving of first information by the network device includes: The method of claim 5, further comprising: the network device receiving an uplink data channel (PUSCH) transmitted from a first terminal device, the uplink data channel (PUSCH) including the first information.

9. A first terminal device adapted to carry out the method of claim 1.

10. A network device adapted to carry out the method of claim 5.

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