WO2021063002A1 - 数据传输的方法和设备 - Google Patents
数据传输的方法和设备 Download PDFInfo
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- WO2021063002A1 WO2021063002A1 PCT/CN2020/090674 CN2020090674W WO2021063002A1 WO 2021063002 A1 WO2021063002 A1 WO 2021063002A1 CN 2020090674 W CN2020090674 W CN 2020090674W WO 2021063002 A1 WO2021063002 A1 WO 2021063002A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- the embodiments of the present application relate to the field of communications, and more specifically, to methods and devices for data transmission in D2D communication and V2X communication.
- the Internet of Vehicles (Vehicle to Everything, V2X) communication is a kind of Sidelink (SL) transmission technology based on Device to Device (D2D) communication. It is different from the traditional Long Term Evolution (Long Term Evolution (LTE) systems have different ways of receiving or sending data through base stations.
- LTE Long Term Evolution
- the Internet of Vehicles system uses terminal-to-terminal direct communication, so it has higher spectrum efficiency and lower transmission delay.
- TBS Transport Block
- TBS Transport Block
- the present application provides a data transmission method and device, which can accurately determine the TBS of the data channel in the side-line transmission process.
- a data transmission method which includes: a terminal device determines the corresponding PSSCH in the second resource according to a first resource used to transmit PSCCH and a second resource used to transmit PSSCH The number of resource element REs, where the first resource and the second resource at least partially overlap; the terminal device determines the PSSCH transport block size TBS according to the number of REs corresponding to the PSSCH.
- a terminal device in a second aspect, can execute the foregoing first aspect or any optional implementation method of the first aspect.
- the terminal device includes a functional module for executing the foregoing first aspect or any possible implementation manner of the first aspect.
- a terminal device including a processor and a memory.
- the memory is used to store a computer program
- the processor is used to call and run the computer program stored in the memory to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
- a chip for implementing the foregoing first aspect or any possible implementation of the first aspect.
- the chip includes a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the method in the first aspect or any possible implementation of the first aspect.
- a computer-readable storage medium for storing computer programs.
- the computer program causes the computer to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
- a computer program product including computer program instructions.
- the computer program instructions cause the computer to execute the above-mentioned first aspect or the method in any possible implementation of the first aspect.
- a computer program which when running on a computer, causes the computer to execute the method in the first aspect or any possible implementation of the first aspect.
- the number of REs corresponding to PSSCH can be determined according to the transmission resources of PSCCH and PSSCH. Therefore, the TBS of the PSSCH can be accurately determined according to the number of REs corresponding to the PSSCH.
- Fig. 1 is a schematic diagram of a possible wireless communication system applied by an embodiment of the present application.
- Fig. 2 is a schematic architecture diagram of another application scenario of an embodiment of the present application.
- Fig. 3 is a schematic diagram of the transmission resources of PSCCH and PSSCH overlapping.
- Fig. 4 is a schematic diagram of the first PSCCH and the second PSCCH.
- Figure 5 is a schematic diagram of the usage of each resource in a time slot.
- Figure 6 is a schematic diagram of side feedback between terminal devices.
- Fig. 7 is a schematic diagram of transmission resources of a side row feedback channel.
- FIG. 8 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
- FIG. 9 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
- FIG. 11 is a schematic structural diagram of an apparatus for data transmission according to an embodiment of the present application.
- GSM Global System of Mobile Communication
- CDMA Code Division Multiple Access
- WCDMA broadband code division multiple access
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- LTE-A advanced Advanced long term evolution
- NR New Radio
- NR NR
- NR-based access to unlicensed spectrum, LTE-U NR
- UMTS Universal Mobile Telecommunication System
- WLAN Wireless Local Area Networks
- WiFi Wireless Fidelity
- 5G system or other communication systems etc.
- D2D Device to Device
- M2M Machine to Machine
- MTC Machine Type Communication
- V2V vehicle to vehicle
- CA carrier aggregation
- DC dual connectivity
- SA standalone
- the communication system 100 applied in the embodiment of the present application is shown in FIG. 1 and FIG. 2.
- the communication system 100 includes a network device 10.
- the network device 10 may be a device that communicates with terminal devices.
- the network device 10 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area.
- the network device 10 may be, for example, a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system; a base station (NodeB, NB) in a WCDMA system; and an evolved base station (Evolutional Node B) in an LTE system. , ENB or eNodeB); the radio controller in the Cloud Radio Access Network (Cloud Radio Access Network, CRAN).
- BTS Base Transceiver Station
- NodeB, NB base station
- Evolutional Node B evolved base station
- ENB or eNodeB the radio controller in the Cloud Radio Access Network
- CRAN Cloud Radio Access Network
- the network device 110 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 device in a 5G network, or a public land mobile network that will evolve in the future (Public Land Mobile Network). Network equipment in Mobile Network, PLMN). Alternatively, the network device 110 may also be a satellite in the NTN system.
- PLMN Public Land Mobile Network
- the communication system 100 also includes at least one terminal device located within the coverage area of the network device 10, such as the terminal device 20 and the terminal device 30.
- the terminal device may be mobile or fixed.
- the terminal device may refer to user equipment, access terminal, user unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
- the terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (Public Land Mobile Network, PLMN) Terminal equipment, etc., which are not limited in the embodiment of the present application.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- the terminal device 20 and the terminal device 30 may perform direct terminal connection (Device to Device, D2D) communication.
- D2D Device to Device
- the terminal device 20 and the terminal device 30 directly communicate through a D2D link, that is, a side link (Sidelink, SL).
- Sidelink Sidelink
- the terminal device 20 and the terminal device 30 directly communicate through a side link.
- the terminal device 20 and the terminal device 30 communicate through side links, and their transmission resources are allocated by the network device; in FIG. 2, the terminal device 20 and the terminal device 30 communicate through the side link
- its transmission resources are independently selected by the terminal equipment, and no network equipment is required to allocate transmission resources.
- Figures 1 and 2 exemplarily show one network device and two terminal devices, but the present application is not limited to this.
- the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminal devices.
- the communication system 100 may also include other network entities such as a network controller and a mobility management entity.
- D2D communication may refer to vehicle to vehicle (Vehicle to Vehicle, "V2V” for short) communication or vehicle to other device (Vehicle to Everything, V2X) communication.
- V2X communication X can generally refer to any device with wireless receiving and sending capabilities, such as but not limited to slow-moving wireless devices, fast-moving vehicle-mounted devices, or network control nodes with wireless transmitting and receiving capabilities. It should be understood that the embodiment of the present invention is mainly applied to the scenario of V2X communication, but can also be applied to any other D2D communication scenario, which is not limited in the embodiment of the present invention.
- the above-mentioned terminal device can use two transmission modes for side-line transmission, namely the first mode and the second mode.
- the first mode the transmission resources of the terminal equipment are allocated by the network equipment, and the terminal equipment performs data transmission on the side link according to the resources allocated by the network equipment; the network equipment can allocate a single transmission for the terminal equipment Resources, semi-static transmission resources can also be allocated to the terminal.
- this first mode is referred to as mode 3 (mode 3).
- mode 4 this second mode.
- mode 1 the network device allocates transmission resources to the terminal device, which corresponds to the above-mentioned first mode
- mode 2 mode 2
- the terminal device selects transmission resources by itself, which corresponds to the above The second mode.
- the side link transmission supports the resource allocation method of Configured Grant (CG), that is, the network device allocates the side transmission resources to the terminal device through the method of configuring the grant.
- CG Configured Grant
- the terminal device can transmit sideline data on the transmission resource without sending a scheduling request (Scheduling Request, SR) or a buffer status report (Buffer Status Report, BSR) and other signaling are used to apply for resources, thereby reducing transmission delay.
- CG Configured Grant
- the method of dynamically allocating transmission resources is also supported.
- the terminal device When the terminal device has side-line data to be sent, the terminal device sends a request to the network device, and the network device allocates side-line transmission resources to the terminal device through downlink control information (DCI), and the terminal device uses the transmission resources to perform side-line transmission.
- DCI downlink control information
- the terminal device autonomously selects transmission resources from the resource pool allocated or pre-configured by the network device. Among them, the terminal device can obtain the available resource set in the resource pool by means of listening. When the terminal device selects a transmission resource from the resource set for data transmission, for the service that is periodically transmitted, the terminal device may reserve the transmission resource for the next transmission, so as to prevent other users from preempting the resource. For aperiodic transmission services, terminal equipment does not need to reserve transmission resources.
- the control channel and data channel can multiplex resources for transmission.
- the resources of the control channel and the resources of the data channel overlap.
- the resources of the Physical Sidelink Control Channel (PSCCH) are embedded in the transmission resources of the Physical Sidelink Shared Channel (PSSCH), PSCCH and PSSCH
- PSSCH Physical Sidelink Shared Channel
- the start position of the frequency domain or the end position of the frequency domain are the same.
- the transmission resource of the PSSCH includes the length of a time slot, where the last time domain symbol is used as a guard period (Guard Period, GP), and the GP is not used to transmit data.
- Guard Period Guard Period
- the PSCCH occupies the first few symbols of the time domain position in the time slot, so the receiving end device can decode the PSCCH after receiving the PSCCH symbols, and it does not need to receive the data of the entire time slot and then decode the PSCCH. Reduce transmission delay.
- level 2 control information may be used in NR-V2X, that is, the control channel includes the first PSCCH and the second PSCCH.
- the first PSCCH may indicate information for the receiving end device to perform resource listening, such as PSSCH transmission resources, priority information of services carried in the PSSCH, information about reserved resources, and so on.
- the second PSCCH indicates information used to demodulate the PSSCH, such as Modulation and Coding Scheme (MCS), number of transmission layers, Hybrid Automatic Repeat reQuest (HARQ) process number, and new data indication ( New Data Indicator (NDI), relevant identification (ID) information of the sending end device and the receiving end device, etc.
- MCS Modulation and Coding Scheme
- HARQ Hybrid Automatic Repeat reQuest
- NDI New Data Indicator
- ID relevant identification
- the size of the time domain resource or the frequency domain resource of the first PSCCH is pre-configured or configured by the network device. For different resource pools, time domain resources or frequency domain resources of the first PSCCH of different sizes can be configured.
- the resource pool configuration information includes indication information for determining the size of the transmission resource of the first PSCCH, so that the size of the transmission resource for transmitting the first PSCCH can be determined according to the indication information.
- the first PSCCH may indicate information for determining the transmission resource of the second PSCCH, so that the size of the transmission resource of the second PSCCH may be determined according to the first PSCCH.
- PSCCH and PSSCH can be multiplexed with resources for transmission.
- the first symbol in the time slot is usually used for automatic gain control (Automatic Gain Control, AGC) performed by the receiving end device, and the data on this symbol is not used for data demodulation.
- AGC Automatic Gain Control
- the last symbol in this time slot is used as a GP for receiving and sending conversion or sending and receiving conversion. No data is sent on the GP.
- a Physical Sidelink Fadeback Channel (PSFCH) is introduced in the side link.
- the terminal device 20 and the terminal device 30 form a unicast link.
- the terminal device 20 sends the sideline data to the terminal device 30, and the terminal device 30 sends the sideline feedback channel to the terminal device 20 according to the detection result of the received sideline data, which carries feedback information, namely HARQ ACK or NACK.
- the terminal device 20 receives the feedback information sent by the terminal device 30, and determines whether to send a retransmission of the data to the terminal device 30 according to the feedback information.
- the PSFCH occupies 2 time-domain symbols, that is, the PSFCH occupies the symbols 11 and 12 of the time slot, and the symbol 11 can be used for AGC.
- the last time domain symbol of the time slot, that is, symbol 13 can be used as a GP, and there is a GP symbol between PSFCH and PSSCH.
- Fig. 7 does not show reference signals such as demodulation reference signal (Demodulation Reference Signal, DMRS) corresponding to PSCCH, DMRS corresponding to PSSCH, and channel state information reference signal (Channel State Information-Reference Signal, CSI-RS).
- DMRS Demodulation Reference Signal
- CSI-RS Channel State Information-Reference Signal
- the terminal device When performing side-line transmission, the terminal device needs to determine a suitable TBS so as to send a transmission block of a suitable size through the PSSCH.
- the embodiment of the present application provides a data transmission method, which can accurately determine the TBS, and is applicable to the situation where the control channel and the data channel multiplex resources in side-line transmission.
- FIG. 8 is a schematic flowchart of a data transmission method according to an embodiment of the present application.
- the method 800 shown in FIG. 8 may be executed by a terminal device, such as the terminal device 20 or the terminal device 30 shown in FIG. 1 to FIG. 7.
- the method includes all or part of the following steps.
- the terminal device determines the resource corresponding to the PSSCH in the second resource according to the first resource used to transmit the physical side control channel PSCCH and the second resource used to transmit the physical side shared channel PSSCH.
- the number of units (Resource Element, RE).
- the first resource and the second resource at least partially overlap.
- the terminal device determines the transport block size TBS of the PSSCH according to the number of REs corresponding to the PSSCH.
- the sender device When performing side-line transmission, the sender device sends the PSCCH to the receiver device, and the sidelink control information (SCI) in the PSCCH is used to indicate the second resource allocated for the PSSCH.
- the first resource used for PSCCH transmission and the second resource used for PSSCH transmission at least partially overlap, for example, the embodiment shown in FIG. 3 or FIG. 4.
- the terminal device when determining the number of REs corresponding to the PSSCH, the terminal device needs to consider not only the second resource, but also the first resource, so as to obtain an accurate number of REs. After that, the terminal device can determine the size of the PSSCH transport block according to the number of REs corresponding to the PSSCH.
- the PSCCH may include a first PSCCH and a second PSCCH.
- the first PSCCH may indicate information used for resource sensing and first information
- the first information is used to determine the second PSCCH
- the second PSCCH indicates information used to demodulate the PSSCH information.
- the first resource may include a first sub-resource and a second sub-resource, the first sub-resource is used to transmit the first PSCCH, and the second sub-resource is used to transmit the second PSCCH.
- the first sub-resource may be determined according to resource pool configuration information, for example.
- the resource pool configuration information is used to indicate a resource pool that can be used for sideline transmission by the terminal device, and it also carries indication information.
- the indication information is used to determine the size of the first sub-resource.
- the indication information may include, for example, at least one of the following information: the number of time-domain symbols occupied by the first PSCCH, the position of the starting time-domain symbol of the first PSCCH, the number of subbands occupied by the first PSCCH, and the subband size And other information.
- the second sub-resource may be determined according to the first PSCCH.
- the first PSCCH may include first information, and the first information may include, for example, at least one of the following information: the format of the second PSCCH, the aggregation level of the second PSCCH, and the occupation of the second PSCCH.
- the terminal device may determine the resource size occupied by the second PSCCH according to the size of the frequency domain resources occupied by the second PSCCH and the number of time domain symbols; for another example, the terminal device may determine the corresponding control channel according to the aggregation level of the second PSCCH Unit (Control Channel Element, CCE) or RE group (RE Group, REG), and further determine the size of the resources occupied by the second PSCCH; for another example, there is a correspondence between different formats of the second PSCCH and different resources, and the terminal device can Determine the corresponding second PSCCH resource according to the format indicated by the first PSCCH; for another example, different formats of the second PSCCH correspond to different information bit sizes of the control information, and according to the information corresponding to the format of the second PSCCH The number of bits, combined with the MCS used by the second PSCCH, can determine the size of the resources occupied by the second PSCCH.
- CCE Control Channel Element
- REG RE Group
- the first PSCCH may also indicate information used for resource sensing, for example, including at least one of the following information: information about the second resource, priority information of the service carried in the PSSCH, and the terminal equipment Information about reserved resources.
- the second PSCCH indicates information used to demodulate the PSSCH, which includes, for example, at least one of the following information: MCS, number of transmission layers, HARQ process number, NDI, and identification information.
- the identification information includes at least one of the following information: the identification of the transmitting end device, the identification of the receiving end device, the group identification of the receiving end device, and the service identification corresponding to the PSSCH.
- the identification information may be the identification of the sending end device and the identification of the receiving end device; for multicast, the identification information may be the identification of the sending end device and the group identification of the receiving end device, that is, the receiving end device belongs to The identification of the device group; for broadcast, the identification information may be the identification and service identification of the sending end device, and only terminal devices that are interested in the service corresponding to the service identification, or terminal devices that need to receive the service, It is necessary to receive the PSSCH.
- the first resource used to transmit the first PSCCH and the second resource used to transmit the second PSSCH may overlap completely or partially.
- the first resource may be located within the scope of the second resource, that is, the second resource includes the first resource, for example, the embodiment shown in FIG. 3 and FIG. 4.
- the frequency domain start position or the frequency domain end position of the first resource and the second resource are the same.
- the first resource may partially overlap with the second resource, for example, the transmission resource of the first PSCCH does not overlap with the second resource, and the transmission resource of the second PSCCH overlaps with the second resource.
- the overlapped part is used to transmit the PSCCH.
- the above-mentioned method may be executed by the receiving end device, or may be executed by the sending end device. That is, the above-mentioned terminal device may be a sending-end device or a receiving-end device. Among them, the sending end device may send the PSCCH to the receiving end device on the first resource. Correspondingly, the receiving end device receives the PSCCH on the first resource, and determines the second resource according to the PSCCH.
- the transmitting end device may determine the number of REs corresponding to the PSSCH according to the first resource used for transmitting the PSCCH and the second resource used for transmitting the PSSCH, and determine the TBS of the PSSCH according to the number of REs corresponding to the PSSCH.
- the sending end device sends a PSCCH to the receiving end device on the first resource to indicate the second resource, and sends a PSSCH to the receiving end device based on the TBS on the second resource.
- the receiving end device receives the PSCCH on the first resource and determines the second resource.
- the receiving end device may determine the number of REs corresponding to the PSSCH according to the first resource and the second resource, and determine the TBS of the PSSCH according to the number of REs corresponding to the PSSCH, so as to receive the PSSCH based on the TBS on the second resource.
- the terminal device determines the number of resource units RE corresponding to the PSSCH in the second resource according to the first resource and the second resource.
- the RE corresponding to the second PSSCH is an RE used to determine the TBS of the PSSCH.
- the RE corresponding to the second PSSCH may not include at least one of the following: REs in the first resource, REs occupied by side-line reference signals, REs that cannot be used for side-line transmission, and PSFCH occupied RE, RE used as GP, RE used in AGC, etc.
- the RE corresponding to the second PSSCH is the RE used for PSSCH transmission, which does not include the RE occupied by overhead (overhead) such as reference signals.
- the RE corresponding to the PSSCH does not include the RE in the first resource.
- the terminal device needs to remove the REs occupied by the PSCCH in the second resource from the REs included in the second resource, that is, remove the part of the REs in the second resource that overlaps the first resource.
- the REs corresponding to the PSSCH may not include at least one of the following: REs occupied by side-line reference signals, REs that cannot be used for side-line transmission, REs occupied by PSFCH, and REs used as GPs. , And RE used for AGC, etc.
- the terminal device can remove the REs occupied by the GP, AGC, and PSFCH from the REs included in the second resource.
- the side-line reference signal is used for channel demodulation, estimation, measurement, etc., and does not carry data in the data channel. Therefore, the terminal device may also remove the REs occupied by the side row reference signal from the REs included in the second resource.
- the side-line reference signal includes, for example, the DMRS corresponding to the PSSCH, the CSI-RS of the side-line link, and phase tracking reference signals (PT-RS).
- part of the resources in the second resource is used to transmit the side line data, and the other part of the resources is used to transmit the uplink data or the downlink data.
- the terminal device needs to remove the REs that cannot be used to transmit sideline data from the REs included in the second resource.
- the REs in the first resource include the REs occupied by the PSCCH, and, further, also include the REs occupied by the DMRS corresponding to the PSCCH. At this time, the terminal device does not need to remove the number of REs occupied by the DMRS corresponding to the PSCCH from the number of REs included in the second resource.
- the PSSCH can occupy one time slot, that is, the second resource includes one time slot in the time domain.
- this application is not limited to this.
- Example 1 the number of REs N RE corresponding to the PSSCH may be:
- N PRB is the number of physical resource blocks (Physical Resource Blocks, PRBs) corresponding to the PSSCH. It needs to be specifically noted that, because there are PSCCHs on some OFDM symbols in a time slot, these OFDM symbols are used for The number of RPBs sent by the PSSCH is smaller than other OFDM symbols that do not contain PSCCH, so N PRB represents the number of PRBs used to send the PSSCH on the OFDM symbol without PSCCH; N symb is the time corresponding to the PSSCH The number of domain symbols, Is the number of subcarriers included in a PRB, Is the number of REs occupied by the PSCCH in the second resource, RE is the number of lower row occupied by the reference signal, N oh and ⁇ is a preset parameter, 0 ⁇ 1.
- PRBs Physical Resource Blocks
- N symb is the number of time domain symbols corresponding to the PSSCH.
- N PRB is the number of PRBs corresponding to the PSSCH, so Is the total number of REs included in the second resource.
- N symb 12 may also be used.
- the REs occupied by the PSCCH include the REs actually used to transmit the PSCCH and the REs used to transmit the DMRS corresponding to the PSCCH.
- the number of REs occupied by the PSCCH needs to be removed.
- the REs occupied by the side-line reference signal need to be removed from it, including the DMRS corresponding to the PSSCH and the side link CSI-RS and PT-RS etc.
- N oh and ⁇ are optional parameters, which represent additional resource overhead (overhead).
- N oh and ⁇ may be based on the following information to determine at least one of: the number of RE occupied PSFCH, as the number of GP RE, the RE for the number of the AGC, the second resource is unavailable for The number of REs transmitted in the side row and the number of time-domain symbols in the second resource that are not available for side row transmission.
- N oh and ⁇ may be configured by the network device, for example, carried in the resource pool configuration information; or pre-configured, for example, agreed upon by the protocol.
- Noh is the number of REs with no data mapped on the time domain symbols where AGC and GP are located, that is, The number of REs used for AGC and GP in time domain notation.
- N symb 14.
- the number may be N oh PSFCH of RE occupied.
- N RE is adjusted by ⁇ .
- the former symbol is used for AGC, and the latter symbol is used for carrying feedback information.
- the number of symbols available for side-line transmission in a time slot may be less than 14, for example, 7.
- the foregoing resource overhead such as PSFCH, GP, AGC, and resource overhead that cannot be used for side-line transmission, are not repeatedly considered.
- Example 2 The number of REs N RE corresponding to the PSSCH may be:
- O SCI2 represents the number of bits carried in the second PSCCH, which has the same meaning as 3GPP TS 38.212 V16.0.0, that is, the number of bits in SCI format 0-2;
- L SCI2 represents the length of the CRC check bit of the second PSCCH, which has the same meaning as 3GPP TS 38.212 V16.0.0;
- the value of is indicated by the first PSCCH (that is, SCI format 0-1), which represents the bit rate offset of the second PSCCH, and has the same meaning as 3GPP TS 38.212 V16.0.0;
- C SL-SCH represents the number of code blocks of the SL-SCH carried by the current PSSCH, which has the same meaning as 3GPP TS 38.212 V16.0.0;
- ⁇ represents the number of idle subcarriers on the PRB mapped by the last modulation symbol of the second PSCCH, and the meaning is the same as 3GPP TS 38.212 V16.0.0;
- K r represents the size of the r-th code block of the SL-SCH carried by the current PSSCH, which has the same meaning as 3GPP TS 38.212 16.0.0;
- ⁇ is the scale factor configured by the upper layer, and the meaning is the same as 3GPP TS 38.212 V16.0.0.
- Example 3 The number of REs N RE corresponding to the PSSCH may be:
- N PRB is the number of physical resource blocks (Physical Resource Blocks, PRBs) corresponding to the PSSCH. It needs to be specifically noted that, because there are PSCCHs on some OFDM symbols in a time slot, these OFDM symbols are used for The number of RPBs sent by the PSSCH is less than other OFDM symbols that do not include PSCCH, so N PRB represents the number of PRBs used to send the PSSCH on an OFDM symbol without PSCCH;
- the UE can determine the values of the above two parameters according to the configuration or pre-configuration information of the current resource pool; Includes resource elements for demodulating the DMRS of the first PSCCH.
- the value of may be the number of resource units occupied by the side-line CI-RS and the side-line PT-RS that the terminal device transmits within the time domain and frequency domain resources of the PSSCH;
- the value of is indicated by the configuration signaling or pre-configuration signaling of the current resource pool.
- the terminal device transmits the sideline CSI-RS within the time domain and frequency domain resources of the PSSCH, then otherwise among them with The value of is indicated by the configuration signaling or pre-configuration signaling of the current resource pool.
- the OFDM symbol position of the sideline CSI-RS transmitted within the PSSCH time domain and frequency domain resource range is indicated by the configuration of the resource pool or pre-configured signaling, and the value range of the OFDM symbol index For [3, 13].
- Example 4 The number of REs N RE corresponding to the PSSCH may be:
- N PRB with The meaning of is the same as example three;
- Example 5 the number of REs N RE corresponding to the PSSCH may be:
- N PRB with The meaning of is the same as example four;
- the values of the above two parameters are determined by the configuration signaling or pre-configuration signaling of the current resource pool Instructions.
- the values of the above two parameters can be the same.
- the terminal does not send the second PSCCH, the values of the above two parameters are both 0.
- the values of the above two parameters are both 0.
- Example 6 the number of REs N RE corresponding to the PSSCH may be:
- N PRB is the number of physical resource blocks PRBs corresponding to the PSSCH, Is the number of subcarriers included in a PRB, Is the number of resource units of the first PSCCH transmitted by the PSSCH;
- t symbol,6 represents the number of reference OFDM symbols used for PSSCH transmission, the better, t symbol,6 is a positive number, and 0 ⁇ t symbol,6 ⁇ 13, the better, the value granularity of t symbol,6 is 0.5.
- t symbol,6 is determined by the physical layer of the sending terminal according to its own implementation mode, or determined by the higher layer of the sending terminal according to its own implementation mode, and instructed to the physical layer of the sending terminal.
- t symbol,6 is selected by the physical layer of the sending terminal within a specific value range, and the specific value range is determined by configuration signaling or pre-configuration signaling.
- the sending terminal determines t symbol,6 according to at least one of the following contents:
- the currently determined number of demodulation reference signal OFDM symbols of the PSSCH refers to any OFDM symbol that has a demodulation reference signal, and does not include OFDM symbols used for AGC.
- the transmitting terminal should directly or indirectly indicate the value of t symbol,6 in PSCCH2 through a specific bit field.
- the value of t symbol,6 can be indicated as a deviation from a specific reference value.
- the specific reference value may be the number of OFDM symbols that can be used for PSSCH transmission in the current PSSCH transmission time slot, or the number of OFDM symbols that can be used for PSSCH transmission in the time slot configured for the physical side feedback channel PSFCH resource in the current resource pool , Or the number of OFDM symbols that can be used for PSSCH transmission in a time slot configured for no physical side feedback channel PSFCH resource in the current resource pool.
- the value of t symbol and 6 indicated in the corresponding PSCCH2 should be the same.
- Example 7 the number of REs N RE corresponding to the PSSCH may be:
- N PRB is the number of physical resource blocks PRBs corresponding to the PSSCH, Is the number of subcarriers included in a PRB, Is the number of resource units of the first PSCCH transmitted by the PSSCH;
- the value configured for the higher level, the better, The value of is related to the number of REs occupied by the CSI-RS and PT-RS sent together with the current PSSCH.
- t symbol,7 represents the number of reference OFDM symbols used for PSSCH transmission, the better, t symbol,7 is a positive number, and 0 ⁇ t symbol,7 ⁇ 13, the better, the value granularity of t symbol,7 is 0.5.
- t symbol,7 is determined by the physical layer of the sending terminal according to its own implementation mode, or determined by the higher layer of the sending terminal according to its own implementation mode, and instructed to the physical layer of the sending terminal.
- t symbol,7 is selected by the physical layer of the sending terminal within a specific value range, and the specific value range is determined by configuration signaling or pre-configuration signaling.
- the sending terminal determines t symbol,7 according to at least one of the following contents:
- the currently determined number of demodulation reference signal OFDM symbols of the PSSCH refers to any OFDM symbol that has a demodulation reference signal, and does not include OFDM symbols used for AGC.
- the transmitting terminal should directly or indirectly indicate the value of t symbol,7 in PSCCH2 through a specific bit field.
- the value of t symbol,7 can be indicated as a deviation from a specific reference value.
- the specific reference value may be the number of OFDM symbols that can be used for PSSCH transmission in the current PSSCH transmission time slot, or the number of OFDM symbols that can be used for PSSCH transmission in the time slot configured for the physical side feedback channel PSFCH resource in the current resource pool , Or the number of OFDM symbols that can be used for PSSCH transmission in a time slot configured for no physical side feedback channel PSFCH resource in the current resource pool.
- t symbol is indicated in the corresponding PSCCH2, and the value of 7 is the same.
- Example 8 the number of REs N RE corresponding to the PSSCH may be:
- N PRB is the number of physical resource blocks PRBs corresponding to the PSSCH
- the value configured for the higher level, the better, The value of is related to the number of REs occupied by the CSI-RS and PT-RS sent together with the current PSSCH. Optional, It can always be 0.
- t symbol,8 represents the number of reference OFDM symbols used for PSSCH transmission, the better, t symbol,8 is a positive number, and 0 ⁇ t symbol,6 ⁇ 13, the better, the value granularity of t symbol,8 is 0.5.
- t symbol,8 is determined by the physical layer of the sending terminal according to its own implementation mode, or determined by the higher layer of the sending terminal according to its own implementation mode, and instructed to the physical layer of the sending terminal.
- t symbol,8 is selected by the physical layer of the sending terminal within a specific value range, and the specific value range is determined by configuration signaling or pre-configuration signaling.
- the sending terminal determines t symbol,8 according to at least one of the following contents:
- the currently determined number of demodulation reference signal OFDM symbols of the PSSCH refers to any OFDM symbol that has a demodulation reference signal, and does not include OFDM symbols used for AGC.
- the transmitting terminal should directly or indirectly indicate the value of t symbol,8 in PSCCH2 through a specific bit field.
- the value of t symbol,8 can be indicated as a deviation from a specific reference value.
- the specific reference value may be the number of OFDM symbols that can be used for PSSCH transmission in the current PSSCH transmission time slot, or the number of OFDM symbols that can be used for PSSCH transmission in the time slot configured for the physical side feedback channel PSFCH resource in the current resource pool , Or the number of OFDM symbols that can be used for PSSCH transmission in a time slot configured for no physical side feedback channel PSFCH resource in the current resource pool.
- t symbol is indicated in the corresponding PSCCH2, and the value of 8 is the same.
- the sending terminal ensures that the MCS value of the modulation and coding strategy remains unchanged.
- Example 9 the number of REs N RE corresponding to the PSSCH may be:
- N PRB is the number of physical resource blocks PRBs corresponding to the PSSCH
- the value configured for the higher level, the better, The value of is related to the number of REs occupied by the CSI-RS and PT-RS sent together with the current PSSCH. Optional, It can always be 0.
- t symbol 9 represents the number of reference OFDM symbols used for PSSCH transmission, preferably, t symbol, 9 is a positive integer, and 0 ⁇ t symbol, 9 ⁇ 13.
- t symbol,9 is determined by the physical layer of the sending terminal according to its own implementation mode, or determined by the higher layer of the sending terminal according to its own implementation mode, and instructed to the physical layer of the sending terminal.
- t symbol,9 is selected by the physical layer of the sending terminal within a specific value range, and the specific value range is determined by configuration signaling or pre-configuration signaling.
- the sending terminal determines t symbol,9 according to at least one of the following contents:
- the currently determined number of demodulation reference signal OFDM symbols of the PSSCH refers to any OFDM symbol that has a demodulation reference signal, and does not include OFDM symbols used for AGC.
- the transmitting terminal should directly or indirectly indicate the value of t symbol,9 in PSCCH2 through a specific bit field.
- the value of t symbol,9 can be indicated as a deviation from a specific reference value.
- the specific reference value may be the number of OFDM symbols that can be used for PSSCH transmission in the current PSSCH transmission time slot, or the number of OFDM symbols that can be used for PSSCH transmission in the time slot configured for the physical side feedback channel PSFCH resource in the current resource pool , Or the number of OFDM symbols that can be used for PSSCH transmission in a time slot configured for no physical side feedback channel PSFCH resource in the current resource pool.
- t symbol is indicated in the corresponding PSCCH2, and the value of 9 is the same.
- the transmitting terminal In order to determine the actual number of REs used to carry reference signals in the PSSCH according to the reference signal pattern actually used in the initial transmission of the PSSCH, it is preferable.
- the transmitting terminal should pass specific bits in the PSCCH2
- the field directly or indirectly indicates the reference signal pattern actually used for the initial transmission of the PSSCH.
- the transmitting terminal guarantees that the reference signal pattern actually used remains unchanged.
- the reference signal pattern selected by the transmitting terminal may be different from the actual reference signal pattern, which is better.
- the transmitting terminal should directly or indirectly indicate the reference signal pattern selected by the transmitting terminal through a specific bit field in the PSCCH2.
- the reference signal pattern configured by configuration signaling or pre-configured signaling may be the same as the actually adopted reference signal pattern.
- the reference signal pattern is different.
- the value of is related to the number of DMRS symbols allowed in the current resource pool, as shown in Table 1.
- the current resource pool can be used for the number of OFDM symbols in the side row
- A represents the number of DMRS patterns allowed in the current resource pool, Indicates the number of REs occupied by the DMRS corresponding to the i-th DMRS pattern assuming that the number of symbols occupied by the PSSCH is t symbol, 9.
- the sending terminal ensures that the MCS value of the modulation and coding strategy remains unchanged.
- the terminal device After determining the number of REs corresponding to the PSSCH in the second resource based on the foregoing method, the terminal device determines the transport block size TBS of the PSSCH according to the number of REs corresponding to the PSSCH.
- the terminal device determining the TBS of the PSSCH according to the number of REs corresponding to the PSSCH includes: the terminal device determining the number of information bits according to the number of REs corresponding to the PSSCH; The terminal device determines the TBS according to the number of information bits.
- N info N RE ⁇ R ⁇ Q m ⁇
- N RE the number of REs corresponding to the PSSCH
- R the transmission code rate
- Q m the modulation order
- ⁇ the transmission Number of layers.
- the terminal device may quantify the number of information bits N info, obtained after quantization information bits N 'info, and the quantization information according to the number of bits N' info, determining the TBS of PSSCH .
- the process of determining the TBS according to the number of information bits may include the following situations.
- Case 1 If the number of information bits is less than or equal to the first threshold, that is, N info ⁇ N thd1 , the terminal device quantizes the number of information bits to obtain the quantized number of information bits N′ info ; the terminal device in TBS table, choose not less than and closest to N 'as the TBS integer info.
- the TBS table is shown in Table 3 for example.
- the terminal device may N 'info, select the appropriate table in TBS TBS.
- the above process of determining TBS is applicable to the situation when PSSCH is transmitted for the first time.
- the PSSCH uses the MCS table shown in Table 4 below, and 0 ⁇ I MCS ⁇ 27; or, the PSSCH is used Other MCS forms such as Table 5 and Table 6 below, and 0 ⁇ I MCS ⁇ 28.
- the TBS of the retransmitted PSSCH is the same as the TBS of the first transmission of the PSSCH.
- the PSSCH carries the retransmitted data
- the TBS of the retransmitted PSSCH uses the TBS corresponding to the first transmission. can.
- the side-line control channel, the side-line feedback channel, the side-line reference signal, the resources not available for the side-line transmission on the shared carrier, and the comb mapping are considered. Therefore, it is possible to obtain a more accurate number of PSSCH REs, so as to accurately determine the size of the PSSCH transport block.
- the size of the sequence number of the above-mentioned processes does not imply the order of execution.
- the execution order of each process should be determined by its function and internal logic, and should not correspond to the implementation process of the embodiments of the present application. Constitute any limitation.
- FIG. 9 is a schematic block diagram of a terminal device 900 according to an embodiment of the present application.
- the terminal device 900 includes a processing unit 910 and a transceiving unit 920.
- the processing unit 910 is used for:
- the number of resource element REs corresponding to the PSSCH in the second resource is determined, where the first resource and the second resource are Resources overlap at least partially;
- the PSCCH transmission resource and the PSSCH transmission resource jointly determine the number of REs occupied by the PSCCH, so that the number of REs occupied by the PSCCH can be determined according to The number of REs occupied by the PSCCH accurately determines the TBS of the PSSCH.
- the number of REs corresponding to the PSSCH does not include the number of REs in the first resource.
- the number of REs corresponding to the PSSCH does not include at least one of the following: the number of REs occupied by side-line reference signals, the number of REs that cannot be used for side-line transmission, and the REs occupied by PSFCH The number of REs used as GP, and the number of REs used for AGC.
- the number of REs corresponding to the PSSCH is:
- N PRB is the number of physical resource blocks PRBs corresponding to the PSSCH
- N symb is the number of time domain symbols corresponding to the PSSCH
- RE is the number of lower row occupied by the reference signal
- N oh and ⁇ is a preset parameter, 0 ⁇ 1.
- N oh and ⁇ is based on determining at least one of: the number of RE occupied PSFCH, as the number of GP RE, the RE for the number of the AGC, the second resource The number of REs that cannot be used for sideline transmission in the second resource, and the number of time-domain symbols that cannot be used for sideline transmission in the second resource.
- the side row reference signal includes at least one of the following: a DMRS corresponding to the PSSCH, a CSI-RS of a side link, and a PT-RS.
- the REs in the first resource include the number of REs occupied by the PSCCH and its corresponding DMRS.
- the PSCCH includes a first PSCCH and a second PSCCH.
- the first PSCCH indicates information used for resource sensing and first information
- the first information is used to determine the transmission resource of the second PSCCH
- the second PSCCH indicates that it is used to demodulate the PSSCH Information.
- the information used for resource listening includes at least one of the following: information about the second resource, priority information of the service carried in the PSSCH, and information about the reserved resources of the terminal device. information.
- the first information includes at least one of the following: the format of the second PSCCH; the aggregation level of the second PSCCH; the size of the frequency domain resources occupied by the second PSCCH; 2. The number of time-domain symbols occupied by the PSCCH.
- the information used to demodulate the PSSCH includes at least one of the following: MCS, number of transmission layers, HARQ process number, NDI, and identification information; wherein, the identification information includes the following information At least one: the identifier of the transmitting end device, the identifier of the receiving end device, the group identifier of the receiving end device, and the service identifier corresponding to the PSSCH.
- the terminal device is a receiving device, and the terminal device further includes: a transceiving unit 920, configured to receive, on the first resource, the PSCCH sent by the transmitting device, and the PSCCH is used to determine The second resource.
- a transceiving unit 920 configured to receive, on the first resource, the PSCCH sent by the transmitting device, and the PSCCH is used to determine The second resource.
- the terminal device is a transmitting-end device, and the terminal device further includes: a transceiving unit 920, configured to send the PSCCH to the receiving-end device on the first resource, and the PSCCH is used to determine The second resource.
- a transceiving unit 920 configured to send the PSCCH to the receiving-end device on the first resource, and the PSCCH is used to determine The second resource.
- the processing unit 910 is specifically configured to: determine the number of information bits according to the number of REs corresponding to the PSSCH; and determine the TBS according to the number of information bits.
- N info N RE ⁇ R ⁇ Q m ⁇
- N RE is the number of REs corresponding to the PSSCH
- R is the transmission code rate
- Q m is the modulation order
- the processing unit 910 is specifically configured to: quantize the number of information bits to obtain a quantized number of information bits; the terminal device determines the TBS according to the number of quantized information bits.
- terminal device 900 can perform the corresponding operations performed by the terminal device in the method shown in FIG.
- FIG. 10 is a schematic structural diagram of a terminal device 1000 according to an embodiment of the present application.
- the terminal device 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
- the terminal device 1000 may further include a memory 1020.
- the processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiment of the present application.
- the memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.
- the terminal device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, and specifically, may send information or data to other devices. Or receive information or data sent by other devices.
- the transceiver 1030 may include a transmitter and a receiver.
- the transceiver 1030 may further include an antenna, and the number of antennas may be one or more.
- FIG. 11 is a schematic structural diagram of an apparatus for data transmission according to an embodiment of the present application.
- the apparatus 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
- the apparatus 1100 may further include a memory 1120.
- the processor 1110 can call and run a computer program from the memory 1120 to implement the method in the embodiment of the present application.
- the memory 1120 may be a separate device independent of the processor 1110, or may be integrated in the processor 1110.
- the device 1100 may further include an input interface 1130.
- the processor 1110 can control the input interface 1130 to communicate with other devices or chips, and specifically, can obtain information or data sent by other devices or chips.
- the apparatus 1100 may further include an output interface 1140.
- the processor 1110 can control the output interface 1140 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
- the apparatus 1100 may be applied to the terminal equipment in the embodiments of the present application, and the communication apparatus may implement the corresponding processes implemented by the terminal equipment in the various methods of the embodiments of the present application.
- the communication apparatus may implement the corresponding processes implemented by the terminal equipment in the various methods of the embodiments of the present application.
- the device 1100 may be a chip, for example.
- the chip may be a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-chip.
- the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
- the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
- the above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
- DSP Digital Signal Processor
- ASIC application specific integrated circuit
- FPGA ready-made programmable gate array
- the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
- the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
- the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
- the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
- the volatile memory may be random access memory (Random Access Memory, RAM), which is used as an external cache.
- RAM static random access memory
- DRAM dynamic random access memory
- DRAM synchronous dynamic random access memory
- DDR SDRAM Double Data Rate Synchronous Dynamic Random Access Memory
- Enhanced SDRAM, ESDRAM Enhanced Synchronous Dynamic Random Access Memory
- Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
- DR RAM Direct Rambus RAM
- the memory in the embodiment of the present application may also be static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), and synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic Random access memory (Synch Link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memory in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.
- the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
- the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. Go into details.
- the embodiments of the present application also provide a computer program product, including computer program instructions.
- the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, it is not here. Go into details again.
- the embodiment of the present application also provides a computer program.
- the computer program can be applied to the terminal device in the embodiment of the present application.
- the computer program runs on the computer, the computer is caused to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity , I won’t repeat it here.
- system and “network” are often used interchangeably herein.
- the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
- the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
- B corresponding (corresponding) to A means that B is associated with A, and B can be determined according to A.
- determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
- the disclosed system, device, and method may be implemented in other ways.
- the device embodiments described above are only illustrative.
- the division of the unit is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
- the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
- the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
- the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
- the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .
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Abstract
Description
TBS索引 | TBS | TBS索引 | TBS | TBS索引 | TBS | TBS索引 | TBS |
1 | 24 | 31 | 336 | 61 | 1288 | 91 | 3624 |
2 | 32 | 32 | 352 | 62 | 1320 | 92 | 3752 |
3 | 40 | 33 | 368 | 63 | 1352 | 93 | 3824 |
4 | 48 | 34 | 384 | 64 | 1416 | ||
5 | 56 | 35 | 408 | 65 | 1480 | ||
6 | 64 | 36 | 432 | 66 | 1544 | ||
7 | 72 | 37 | 456 | 67 | 1608 | ||
8 | 80 | 38 | 480 | 68 | 1672 | ||
9 | 88 | 39 | 504 | 69 | 1736 | ||
10 | 96 | 40 | 528 | 70 | 1800 | ||
11 | 104 | 41 | 552 | 71 | 1864 | ||
12 | 112 | 42 | 576 | 72 | 1928 | ||
13 | 120 | 43 | 608 | 73 | 2024 | ||
14 | 128 | 44 | 640 | 74 | 2088 | ||
15 | 136 | 45 | 672 | 75 | 2152 | ||
16 | 144 | 46 | 704 | 76 | 2216 | ||
17 | 152 | 47 | 736 | 77 | 2280 | ||
18 | 160 | 48 | 768 | 78 | 2408 |
19 | 168 | 49 | 808 | 79 | 2472 | ||
20 | 176 | 50 | 848 | 80 | 2536 | ||
21 | 184 | 51 | 888 | 81 | 2600 | ||
22 | 192 | 52 | 928 | 82 | 2664 | ||
23 | 208 | 53 | 984 | 83 | 2728 | ||
24 | 224 | 54 | 1032 | 84 | 2792 | ||
25 | 240 | 55 | 1064 | 85 | 2856 | ||
26 | 256 | 56 | 1128 | 86 | 2976 | ||
27 | 272 | 57 | 1160 | 87 | 3104 | ||
28 | 288 | 58 | 1192 | 88 | 3240 | ||
29 | 304 | 59 | 1224 | 89 | 3368 | ||
30 | 320 | 60 | 1256 | 90 | 3496 |
Claims (73)
- 一种数据传输的方法,其特征在于,所述方法包括:终端设备根据用于传输物理侧行控制信道PSCCH的第一资源,以及用于传输物理侧行共享信道PSSCH的第二资源,确定所述PSSCH在所述第二资源内对应的资源单元RE的数量,其中,所述第一资源与所述第二资源至少部分重叠;所述终端设备根据所述PSSCH对应的RE的数量,确定所述PSSCH的传输块大小TBS。
- 根据权利要求1所述的方法,其特征在于,所述PSSCH对应的RE中不包括所述第一资源内的RE。
- 根据权利要求2所述的方法,其特征在于,所述PSSCH对应的RE中还不包括以下中的至少一种:侧行参考信号所占的RE、不可用于侧行传输的RE、物理侧行反馈信道PSFCH所占的RE、用作保护间隔GP的RE、以及用于自动增益控制AGC的RE。
- 根据权利要求4所述的方法,其特征在于,N oh和β是基于以下中的至少一种确定的:所述PSFCH所占的RE的数量、用作GP的RE的数量、用于AGC的RE的数量、所述第二资源内不可用于侧行传输的RE的数量、以及所述第二资源内不可用于侧行传输的时域符号的数量。
- 根据权利要求3所述的方法,其特征在于,所述PSSCH对应的RE的数量为:其中,O SCI2表示第二PSCCH中承载的比特数,L SCI2表示第二PSCCH的CRC校验位的长度, 表示第二PSCCH的码率偏移,C SL-SCH表示当前PSSCH承载的SL-SCH的码块的个数,l=0,1,2…, 表示OFDM符号索引, 表示当前时隙内分配给PSSCH传输的OFDM符号数, 表示OFDM符号l上被调度的PSSCH带宽内可以用于承载第二PSCCH的子载波个数, 表示OFDM符号l上调度的PSSCH的带宽, 表示OFDM符号l上用于承载被调度的PSSCH的DMRS的子载波的个数, 表示OFDM符号l上用于承载被调度的PSSCH的PT-RS的子载波的个数, 表示OFDM符号l上被调度的PSSCH带宽内用于承载CSI-RS的子载波的个数,γ表示第二PSCCH最后一个调制符号所映射的PRB上空闲子载波的个数,K r表示当前PSSCH承载的SL-SCH的第r码块的大小,α为高层配置的比例系数。
- 根据权利要求3所述的方法,其特征在于,所述PSSCH对应的RE的数量为:为所述PSSCH传输的第一PSCCH的资源单元个数, 表示用于第一PSCCH发送的PRB个数, 表示用于第一PSCCH发送的OFDM符号数, 为所述PSSCH传输的第二PSCCH发送的资源单元个数, 表示用于承载所述PSSCH的DMRS的资源单元个数;
- 根据权利要求3所述的方法,其特征在于,所述PSSCH对应的RE的数量为:其中,N PRB为所述PSSCH对应的物理资源块PRB的数量, 为一个PRB中包括的子载波的数量, 表示当前时隙内分配给PSSCH传输的OFDM符号数, 表示用于第一PSCCH发送的PRB个数, 表示用于第一PSCCH发送的OFDM符号数, 为所述PSSCH传输的第二PSCCH发送的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围内发送的所述PSSCH的DMRS占用的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外发送的所述PSSCH的DMRS占用的资源单元个数; 表示在与所述PSSCH关联的第一PSCCH的频域范围内每个PRB上需额外去除的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外每个PRB上需要额外去除的资源单元个数。
- 根据权利要求3所述的方法,其特征在于,所述PSSCH对应的RE的数量为:其中,N PRB为所述PSSCH对应的物理资源块PRB的数量, 为一个PRB中包括的子载波的数量, 表示当前时隙内分配给PSSCH传输的OFDM符号数, 表示用于第一PSCCH发送的PRB个数, 表示用于第一PSCCH发送的OFDM符号数, 为所述PSSCH传输的第二PSCCH发送的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围内发送的所述PSSCH的DMRS占用的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外发送的所述PSSCH的DMRS占用的资源单元个数; 表示在与所述PSSCH关联的第一PSCCH的频域范围内每个PRB上需要去除的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外每个PRB上需要额外去除的资源单元个数。
- 根据权利要求12所述的方法,其特征在于,所述t symbol,6是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,6是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求12所述的方法,其特征在于,所述t symbol,6是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数;当前CSI-RS和PT-RS所占的RE数。
- 根据权利要求15所述的方法,其特征在于,所述t symbol,7是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,7是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求15所述的方法,其特征在于,所述t symbol,7是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数。
- 根据权利要求18所述的方法,其特征在于,所述t symbol,8是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,8是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求18所述的方法,其特征在于,所述t symbol,8是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数。
- 根据权利要求21所述的方法,其特征在于,所述t symbol,9是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,9是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求21所述的方法,其特征在于,所述t symbol,9是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数。
- 根据权利要求3至23中任一项所述的方法,其特征在于,所述侧行参考信号包括以下中的至少一种:所述PSSCH对应的解调参考信号DMRS、侧行链路的信道状态指示参考信号CSI-RS以及相位跟踪参考信号PT-RS。
- 根据权利要求1至24中任一项所述的方法,其特征在于,所述第一资源内的RE,包括所述PSCCH及其对应的DMRS所占的RE。
- 根据权利要求1至25中任一项所述的方法,其特征在于,所述PSCCH包括第一PSCCH和第二PSCCH,其中,所述第一PSCCH用于指示用于资源侦听的信息以及第一信息,所述第一信息用于确定所述第二PSCCH的传输资源,所述第二PSCCH用于指示用于解调所述PSSCH的信息。
- 根据权利要求26所述的方法,其特征在于,所述用于资源侦听的信息包括以下中的至少一种:所述第二资源的信息、所述PSSCH中承载的业务的优先级信息、所述终端设备的预留资源的信息。
- 根据权利要求26或27所述的方法,其特征在于,所述第一信息包括以下中的至少一种:所述第二PSCCH的格式;所述第二PSCCH的聚合等级;所述第二PSCCH占用的频域资源的大小;所述第二PSCCH占用的时域符号的数量。
- 根据权利要求26至28中任一项所述的方法,其特征在于,所述用于解调所述PSSCH的信息包括以下中的至少一种:调制编码方式MCS、传输层数、混合自动重传请求HARQ进程号、新数据指示NDI、以及标识信息;其中,所述标识信息包括以下信息中的至少一种:发送端设备的标识、接收端设备的标识、接收端设备的组标识、以及所述PSSCH对应的业务标识。
- 根据权利要求1至29中任一项所述的方法,其特征在于,所述终端设备为接收端设备,所述方法还包括:所述终端设备在所述第一资源上,接收发送端设备发送的所述PSCCH,所述PSCCH用于确定所述第二资源。
- 根据权利要求1至30中任一项所述的方法,其特征在于,所述终端设备为发送端设备,所述方法还包括:所述终端设备在所述第一资源上,向接收端设备发送所述PSCCH,所述PSCCH用于确定所述第二资源。
- 根据权利要求1至31中任一项所述的方法,其特征在于,所述终端设备根据所述PSSCH对应的RE的数量,确定所述PSSCH的TBS,包括:所述终端设备根据所述PSSCH对应的RE的数量,确定信息比特数;所述终端设备根据所述信息比特数,确定所述TBS。
- 根据权利要求32所述的方法,其特征在于,所述信息比特数N info=N RE×R×Q m×υ,其中,N RE为所述PSSCH对应的RE的数量,R为传输码率,Q m为调制阶数,υ为传输层数。
- 根据权利要求32或33所述的方法,其特征在于,所述终端设备根据所述信息比特数,确定所述TBS,包括:所述终端设备对所述信息比特数进行量化,得到量化后的信息比特数;所述终端设备根据所述量化后的信息比特数,确定所述TBS。
- 一种终端设备,其特征在于,所述终端设备包括:处理单元,用于根据用于传输物理侧行控制信道PSCCH的第一资源,以及用于传输物理侧行共享信道PSSCH的第二资源,确定所述PSSCH在所述第二资源内占用的资源单元RE的数量,其中,所述第一资源与所述第二资源至少部分重叠;所述处理单元还用于,根据所述PSSCH对应的RE的数量,确定所述PSSCH的传输块大小TBS。
- 根据权利要求35所述的终端设备,其特征在于,所述PSSCH对应的RE的数量中不包括所述第一资源内的RE的数量。
- 根据权利要求36所述的终端设备,其特征在于,所述PSSCH对应的RE的数量中还不包括以下中的至少一种:侧行参考信号所占的RE的数量、不可用于侧行传输的RE的数量、物理侧行反馈信道PSFCH所占的RE的数量、用作保护间隔GP的RE的数量、以及用于自动增益控制AGC的RE的数量。
- 根据权利要求38所述的终端设备,其特征在于,N oh和β是基于以下中的至少一种确定的:所述PSFCH所占的RE的数量、用作GP的RE的数量、用于AGC的RE的数量、所述第二资源内不可用于侧行传输的RE的数量、以及所述第二资源内不可用于侧行传输的时域符号的数量。
- 根据权利要求37所述的终端设备,其特征在于,所述PSSCH对应的RE的数量为:其中,O SCI2表示第二PSCCH中承载的比特数,L SCI2表示第二PSCCH的CRC校验位的长度, 表示第二PSCCH的码率偏移,C SL-SCH表示当前PSSCH承载的SL-SCH的码块的个数,l=0,1,2…, 表示OFDM符号索引, 表示当前时隙内分配给PSSCH传输的OFDM符号数, 表示OFDM符号l上被调度的PSSCH带宽内可以用于承载第二PSCCH的子载波个数, 表示OFDM符号l上调度的PSSCH的带宽, 表示OFDM符号l上用于承载被调度的PSSCH的DMRS的子载波的个数, 表示OFDM符号l上用于承载被调度的PSSCH的PT-RS的子载波的个数, 表示OFDM符号l上被调度的PSSCH带宽内用于承载CSI-RS的子载波的个数,γ表示第二PSCCH最后一个调制符号所映射的PRB上空闲子载波的个数,K r表示当前PSSCH承载的SL-SCH的第r码块的大小,α为高层配置的比例系数。
- 根据权利要求37所述的终端设备,其特征在于,所述PSSCH对应的RE的数量为:其中,N PRB为所述PSSCH对应的物理资源块PRB的数量, 为一个PRB中包括的子载波的数量, 表示当前时隙内分配给PSSCH传输的OFDM符号数, 表示用于第一PSCCH发送的PRB个数, 表示用于第一PSCCH发送的OFDM符号数, 为所述PSSCH传输的第二PSCCH发送的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围内发送的所述PSSCH的DMRS占用的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外发送的所述PSSCH的DMRS占用的资源单元个数; 表示在与所述PSSCH关联的第一PSCCH的频域范围内每个PRB上需额外去除的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外每个PRB上需要额外去除的资源单元个数。
- 根据权利要求44所述的终端设备,其特征在于,所述PSSCH对应的RE的数量为:其中,N PRB为所述PSSCH对应的物理资源块PRB的数量, 为一个PRB中包括的子载波的数量, 表示当前时隙内分配给PSSCH传输的OFDM符号数, 表示用于第一PSCCH发送的PRB个数, 表示用于第一PSCCH发送的OFDM符号数, 为所述PSSCH传输的第二PSCCH发送的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围内发送的所述PSSCH的DMRS占用的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外发送的所述PSSCH的DMRS占用的资源单元个数; 表示在与所述PSSCH关联的第一PSCCH的频域范围内每个PRB上需要去除的资源单元个数, 表示在与所述PSSCH关联的第一PSCCH的频域范围之外每个PRB上需要额外去除的资源单元个数。
- 根据权利要求46所述的终端设备,其特征在于,所述t symbol,6是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,6是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求46所述的终端设备,其特征在于,所述t symbol,6是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数;当前CSI-RS和PT-RS所占的RE数。
- 根据权利要求37所述的终端设备,其特征在于,所述t symbol,7是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,7是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求50所述的终端设备,其特征在于,所述t symbol,7是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数。
- 根据权利要求52所述的终端设备,其特征在于,所述t symbol,8是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,8是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求52所述的终端设备,其特征在于,所述t symbol,8是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数。
- 根据权利要求55所述的终端设备,其特征在于,所述t symbol,9是由发送终端物理层确定,或由所述发送终端高层确定,并指示给所述发送终端物理层的;或者,t symbol,9是由所述发送终端物理层从取值范围内选择的,所述取值范围是由配置信令或预配置信令确定。
- 根据权利要求55所述的终端设备,其特征在于,所述t symbol,9是根据以下至少一个内容确定:在用于所述PSSCH当前传输和/或重传的资源所在时隙上用于PSSCH发送的OFDM符号数,其中,所述用于PSSCH发送的OFDM符号是指任何存在可用于发送PSSCH的RE的OFDM符号,所述用于PSSCH发送的OFDM符号不包括用于AGC的OFDM符号;当前所述PSSCH的解调参考信号OFDM符号数,所述解调参考信号OFDM符号数是指任何存在解调参考信号的OFDM符号,所述解调参考信号OFDM符号数不包括用于AGC的OFDM符号;当前PSCCH2所占的RE数。
- 根据权利要求37至57中任一项所述的终端设备,其特征在于,所述侧行参考信号包括以下中的至少一种:所述PSSCH对应的解调参考信号DMRS、侧行链路的信道状态指示参考信号CSI-RS以及相位跟踪参考信号PT-RS。
- 根据权利要求35至58中任一项所述的终端设备,其特征在于,所述第一资源内的RE,包括所 述PSCCH及其对应的DMRS所占的RE的数量。
- 根据权利要求35至59中任一项所述的终端设备,其特征在于,所述PSCCH包括第一PSCCH和第二PSCCH,其中,所述第一PSCCH用于指示用于资源侦听的信息以及第一信息,所述第一信息用于确定所述第二PSCCH,所述第二PSCCH用于指示用于解调所述PSSCH的信息。
- 根据权利要求60所述的终端设备,其特征在于,所述用于资源侦听的信息包括以下中的至少一种:所述第二资源的信息、所述PSSCH中承载的业务的优先级信息、所述终端设备的预留资源的信息。
- 根据权利要求60或61所述的终端设备,其特征在于,所述用于传输所述第二PSCCH的资源信息包括以下中的至少一种:所述第二PSCCH的格式;所述第二PSCCH的聚合等级;所述第二PSCCH占用的频域资源的大小;所述第二PSCCH占用的时域符号的数量。
- 根据权利要求60至62中任一项所述的终端设备,其特征在于,所述用于解调所述PSSCH的信息包括以下中的至少一种:调制编码方式MCS、传输层数、混合自动重传请求HARQ进程号、新数据指示NDI、以及标识信息;其中,所述标识信息包括以下信息中的至少一种:发送端设备的标识、接收端设备的标识、接收端设备的组标识、以及所述PSSCH对应的业务标识。
- 根据权利要求35至63中任一项所述的终端设备,其特征在于,所述终端设备为接收端设备,所述终端设备还包括:收发单元,用于在所述第一资源上,接收发送端设备发送的所述PSCCH,所述PSCCH用于确定所述第二资源。
- 根据权利要求35至64中任一项所述的终端设备,其特征在于,所述终端设备为发送端设备,所述终端设备还包括:收发单元,用于在所述第一资源上,向接收端设备发送所述PSCCH,所述PSCCH用于确定所述第二资源。
- 根据权利要求63至65中任一项所述的终端设备,其特征在于,处理单元具体用于:根据所述PSSCH对应的RE的数量,确定信息比特数;根据所述信息比特数,确定所述TBS。
- 根据权利要求66所述的终端设备,其特征在于,所述信息比特数N info=N RE×R×Q m×υ,其中,N RE为所述PSSCH对应的RE的数量,R为传输码率,Q m为调制阶数,υ为传输层数。
- 根据权利要求66或67所述的终端设备,其特征在于,所述处理单元具体用于:对所述信息比特数进行量化,得到量化后的信息比特数;所述终端设备根据所述量化后的信息比特数,确定所述TBS。
- 一种终端设备,其特征在于,所述终端设备包括处理器和存储器,所述存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,以执行权利要求1至34中任一项所述的方法。
- 一种芯片,其特征在于,所述芯片包括处理器,所述处理器用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行权利要求1至34中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程序使得计算机执行权利要求1至34中任一项所述的方法。
- 一种计算机程序产品,其特征在于,包括计算机程序指令,所述计算机程序指令使得计算机执行权利要求1至34中任一项所述的方法。
- 一种计算机程序,其特征在于,所述计算机程序使得计算机执行权利要求1至34中任一项所述的方法。
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EP4013161A4 (en) | 2022-10-12 |
WO2021062978A1 (zh) | 2021-04-08 |
EP4246862A3 (en) | 2023-11-29 |
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EP4013161B1 (en) | 2023-08-23 |
WO2021062613A1 (zh) | 2021-04-08 |
CN113994749A (zh) | 2022-01-28 |
CN114466461B (zh) | 2023-07-18 |
ES2956442T3 (es) | 2023-12-21 |
EP4013161A1 (en) | 2022-06-15 |
FI4013161T3 (fi) | 2023-09-21 |
WO2021062972A1 (zh) | 2021-04-08 |
BR112022005613A2 (pt) | 2022-07-19 |
EP4246862A2 (en) | 2023-09-20 |
US20220190983A1 (en) | 2022-06-16 |
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CN114466461A (zh) | 2022-05-10 |
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