Wireless communication method and terminal equipment

Abstract

The invention provides a wireless communication method and terminal equipment. The method comprises: a first device sending or receiving first control information in a first time slot, the first control information comprising first information, and the first information being associated with one or more time slot groups; wherein the one or more time slot groups are used for continuous time slot transmission on the unlicensed spectrum, the one or more time slot groups comprise a first time slot group where the first time slot is located and / or one or more second time slot groups, and the one or more second time slot groups are located behind the first time slot group in the time domain and are associated with the first time slot group. According to the scheme provided by the embodiment of the invention, the first equipment is helped to perform resource reservation by taking the time slot group as the granularity. Compared with a traditional resource reservation mode with time slots as granularity, the method is better matched with continuous time slot transmission.

Description

Wireless communication method and terminal device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method and terminal device. Background Art

[0002] In the traditional resource reservation method, the terminal device can reserve resources with a single time slot as the granularity through control information. If continuous time slot transmission is introduced, the traditional resource reservation method may not match the continuous time slot transmission.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and terminal device. The following introduces various aspects involved in the present application.

[0005] In a first aspect, a method for wireless communication is provided, comprising: a first device sending or receiving first control information in a first time slot, the first control information including first information, and the first information being associated with one or more time slot groups; wherein the one or more time slot groups are all used for continuous time slot transmission on an unlicensed spectrum, and the one or more time slot groups include a first time slot group in which the first time slot is located and / or one or more second time slot groups, the one or more second time slot groups being located after the first time slot group in the time domain and being associated with the first time slot group.

[0006] According to a second aspect, a method for wireless communication is provided, including: a first device performs continuous time slot transmission using a first time slot group, wherein a plurality of time slots in the first time slot group are used to transmit a transmission block.

[0007] In a third aspect, a terminal device is provided, comprising a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps in the methods of the above aspects.

[0008] In a fourth aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided in the embodiment of the present application.

[0009] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a communication device (for example, a terminal device or a network device) to execute some or all of the steps in the methods of the above aspects.

[0010] In a sixth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a communication device (e.g., a terminal device or a network device) to perform some or all of the steps of the methods described in each of the above aspects. In some implementations, the computer program product may be a software installation package.

[0011] In the seventh aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0012] In an embodiment of the present application, a first device may receive or send first control information in a first time slot, and indicate resource reservation and other conditions through first information associated with one or more time slot groups in the first control information. In other words, the solution in an embodiment of the present application facilitates resource reservation by the first device at the time slot group granularity. Compared to traditional resource reservation methods at the time slot granularity, this is more compatible with continuous time slot transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a diagram illustrating an example of a system architecture of a wireless communication system to which an embodiment of the present application may be applied.

[0014] FIG2 is an example diagram of a side communication scenario within network coverage.

[0015] FIG3 is an example diagram of a side communication scenario with partial network coverage.

[0016] FIG4 is an example diagram of a side communication scenario outside network coverage.

[0017] FIG5 is a diagram illustrating an example of a side communication scenario with a central control node.

[0018] FIG6 is an example diagram of a sideline communication method based on broadcasting.

[0019] FIG7 is an example diagram of a unicast-based sideline communication method.

[0020] FIG8 is an example diagram of a side communication method based on multicast.

[0021] FIG9 is a diagram showing an example of a time slot structure of certain side-by-side communication systems (e.g., an NR-V2X system).

[0022] FIG10 is an example diagram showing changes in the available OFDM symbols for the PSSCH in different time slots.

[0023] FIG11 is an example diagram of time-frequency resources occupied by the second-order SCI in a time slot.

[0024] FIG12 is a schematic diagram of a DMRS pattern of a PSCCH.

[0025] FIG13 is a schematic diagram of the time domain positions of four DMRS symbols when the number of PSSCH symbols is 14.

[0026] FIG14 is an example diagram of a single-symbol DMRS frequency domain type 1. FIG.

[0027] FIG15 is an example diagram of the time-frequency position of an SL CSI-RS.

[0028] FIG16 is a diagram illustrating an example of signal transmission by a communication device within a COT.

[0029] FIG17 is a schematic diagram of a resource reservation method.

[0030] FIG18 is a schematic diagram of resource locations of time slot groups according to an embodiment of the present application.

[0031] FIG19 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0032] FIG20 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0033] FIG21 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0034] FIG22 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0035] Figure 23 is a schematic flowchart of the wireless communication method according to an embodiment of the present application.

[0036] FIG24 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0037] FIG25 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0038] FIG26 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0039] FIG27 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0040] FIG28 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0041] FIG29 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0042] FIG30 is a schematic diagram of resource locations of time slot groups according to another embodiment of the present application.

[0043] Figure 31 is a schematic diagram of transmitting data within a time slot group according to an embodiment of the present application.

[0044] Figure 32 is a schematic flowchart of a wireless communication method according to another embodiment of the present application.

[0045] Figure 33 is a schematic diagram of the first device of an embodiment of the present application.

[0046] FIG34 is a schematic diagram of a first device according to another embodiment of the present application.

[0047] FIG35 is a schematic diagram of a device according to an embodiment of the present application. DETAILED DESCRIPTION

[0048] The technical solution in this application will be described below with reference to the accompanying drawings.

[0049] Communication System

[0050] Figure 1 is a diagram illustrating the system architecture of a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographic area and may communicate with the terminal device 120 located within the coverage area.

[0051] Optionally, the wireless communication system 100 may include multiple network devices and the coverage area of ​​each network device may include other numbers of terminal devices, which is not limited in this embodiment of the present application.

[0052] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0053] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0054] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the terminal device can be used to act as a base station. For example, the terminal device can act as a scheduling entity that provides sidelink signals between terminal devices in vehicle-to-everything (V2X) or device-to-device (D2D) communication. For example, a cellular phone and a car communicate with each other using sidelink signals. Cell phones and smart home devices can communicate with each other without relaying the communication signal through a base station. Optionally, the terminal device can be used to act as a base station.

[0055] The network device in the embodiments of the present application may be a device for communicating with a terminal device, and may also be referred to as an access network device or a radio access network device. For example, the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects a terminal device to a wireless network. A base station can broadly cover various names as follows, or be replaced with the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmission point (TRP), transmission point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, a micro base station, a relay node, a donor node or the like, or a combination thereof. A base station can also refer to a communication module, a modem or a chip used to be set in the aforementioned device or apparatus. The base station can also be a mobile switching center and a device that performs base station functions in device-to-device (D2D), vehicle-to-vehicle (V2V), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, a network-side device in a 6G network, and a device that performs base station functions in future communication systems. The base station can support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form adopted by the network equipment.

[0056] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0057] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0058] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0059] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0060] Sideline communication under different network coverage conditions

[0061] Sidelink communication (or sidelink transmission) refers to a communication technology based on sidelink (SL). Sidelink communication can be, for example, D2D or V2X. Sidelink communication supports direct communication and data transmission between terminal devices. Direct communication data transmission between terminal devices can achieve higher spectrum efficiency and lower transmission latency. For example, the Internet of Vehicles system uses sidelink communication technology.

[0062] In side communication, according to the network coverage of the terminal device, side communication can be divided into side communication within the network coverage, side communication with partial network coverage, side communication outside the network coverage and side communication controlled by the central node.

[0063] Figure 2 illustrates an example scenario for sidelink communication within network coverage. In the scenario shown in Figure 2, both terminal devices 120a are within the coverage of network device 110. Therefore, both terminal devices 120a can receive configuration signaling from network device 110 (configuration signaling in this application can also be replaced by configuration information) and determine the sidelink configuration based on the configuration signaling from network device 110. After both terminal devices 120a have configured their sidelinks, sidelink communication can proceed on the sidelink.

[0064] Figure 3 is an example diagram of a sidelink communication scenario with partial network coverage. In the scenario shown in Figure 3, terminal device 120a performs sidelink communication with terminal device 120b. Terminal device 120a is located within the coverage range of network device 110, so terminal device 120a can receive the configuration signaling of network device 110 and determine the sidelink configuration based on the configuration signaling of network device 110. Terminal device 120b is located outside the network coverage and cannot receive the configuration signaling of network device 110. In this case, terminal device 120b can determine the sidelink configuration based on pre-configuration information and / or information carried in the physical sidelink broadcast channel (PSBCH) sent by terminal device 120a within the network coverage. After both terminal device 120a and terminal device 120b perform sidelink configuration, sidelink communication can be performed on the sidelink.

[0065] Figure 4 illustrates an example scenario for sidelink communication outside of network coverage. In the scenario shown in Figure 4, both terminal devices 120b are outside of network coverage. In this scenario, both terminal devices 120b can determine the sidelink configuration based on pre-configured information. After both terminal devices 120b have configured their sidelinks, sidelink communication can proceed over the sidelink.

[0066] Figure 5 illustrates an example scenario for sideline communication with a central control node. In the scenario shown in Figure 5, multiple terminal devices 120b may constitute a communication group. This communication group may include a central control node. In some cases, the central control node may serve as a cluster header (CH) terminal device. The central control node may have one or more of the following functions: establishing the communication group, managing the joining and leaving of group members, coordinating resources, allocating sideline transmission resources to other terminal devices, receiving sideline feedback information from other terminal devices, and coordinating resources with other communication groups.

[0067] Sideline communication mode

[0068] Certain standards or protocols (such as the 3rd Generation Partnership Project (3GPP)) define two sideline communication modes (or transmission modes): a first mode and a second mode.

[0069] In the first mode, the resources of the terminal device (the resources mentioned in this application may also be referred to as transmission resources, such as time-frequency resources) are allocated by the network device. The terminal device can send data on the side link according to the resources allocated by the network device. The network device can allocate resources for a single transmission to the terminal device, or it can allocate resources for semi-static transmission to the terminal device. This first mode can be applied to scenarios covered by a network device, such as the scenario shown in Figure 2 above. In the scenario shown in Figure 2, the terminal device 120a is within the network coverage of the network device 110, so the network device 110 can allocate resources used in the side transmission process to the terminal device 120a.

[0070] In the second mode, the terminal device can autonomously select one or more resources from a resource pool (RP). The terminal device can then perform side transmission based on the selected resources. For example, in the scenario shown in FIG4 , the terminal device 120b is located outside the cell coverage area. Therefore, the terminal device 120b can autonomously select resources from a pre-configured resource pool for side transmission. Alternatively, in the scenario shown in FIG2 , the terminal device 120a can also autonomously select one or more resources from a resource pool configured by the network device 110 for side transmission.

[0071] Data transmission method of side communication

[0072] Some sidewalk communication systems (such as LTE-V2X) support broadcast-based data transmission (hereinafter referred to as broadcast transmission). For broadcast transmission, the receiving terminal device can be any terminal device around the transmitting terminal device. Taking Figure 6 as an example, terminal device 1 is the transmitting terminal device, and the receiving terminal device corresponding to the transmitting terminal device is any terminal device around terminal device 1, such as terminal devices 2 to terminal devices 6 in Figure 6.

[0073] In addition to broadcast transmission, some communication systems also support unicast-based data transmission (hereinafter referred to as unicast transmission) and / or multicast-based data transmission (hereinafter referred to as multicast transmission). For example, NR-V2X aims to support autonomous driving. Autonomous driving places higher requirements on data exchange between vehicles. For example, data exchange between vehicles requires higher throughput, lower latency, higher reliability, wider coverage, and more flexible resource allocation. Therefore, to improve the performance of data exchange between vehicles, NR-V2X introduces unicast and multicast transmission.

[0074] For unicast transmission, there is typically only one receiving terminal device. For example, in Figure 7, unicast transmission occurs between terminal devices 1 and 2. Terminal device 1 can be the sending terminal device, and terminal device 2 can be the receiving terminal device, or alternatively, terminal device 1 can be the receiving terminal device, and terminal device 2 can be the sending terminal device.

[0075] For multicast transmission, the receiving terminal device can be a terminal device within a communication group, or it can be a terminal device within a certain transmission distance. Taking Figure 7 as an example, terminal devices 1, 2, 3, and 4 form a communication group. If terminal device 1 sends data, the other terminal devices in the group (terminal devices 2 through 4) can all be receiving terminal devices.

[0076] Sideline communication system frame structure

[0077] A timeslot may include channels such as the physical sidelink control channel (PSCCH), the physical sidelink shared channel (PSSCH), and the physical sidelink feedback channel (PSFCH). These channels will be described in detail below and will not be repeated here.

[0078] Figure 9 shows an example of a time slot structure for certain sidelink communication systems (e.g., NR-V2X systems). Figure 9(a) shows an example of a time slot structure in which the physical sidelink feedback channel (PSFCH) is not included in the time slot. Figure 9(b) shows an example of a time slot structure in which the PSFCH is included in the time slot.

[0079] As shown in Figure 9, in the time domain, the PSCCH can start from the second sidelink symbol of the time slot and occupy 2 or 3 orthogonal frequency division multiplexing (OFDM) symbols. In the frequency domain, it can occupy {10, 12 15, 20, 25} physical resource blocks (PRBs). In order to reduce the complexity of blind detection of PSCCH by terminal devices, only one number of PSCCH symbols and PRBs can be configured in a resource pool. In addition, the subchannel is the minimum granularity of PSSCH resource allocation in some sidelink communication systems (such as NR-V2X systems). Therefore, the number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a subchannel in the resource pool to avoid additional restrictions on PSSCH resource selection or allocation.

[0080] In the time domain, the PSSCH can start from the second side symbol of the time slot. The last time domain symbol in the time slot is the guard period (GP) symbol (also called the gap (GAP) symbol), and the remaining symbols can be mapped to the PSSCH. The first side symbol in the time slot can be a repetition of the second side symbol. The receiving terminal device can use the first side symbol as an automatic gain control (AGC) symbol, and the data on this symbol is usually not used for data demodulation. As shown in Figure 9(a), the PSSCH can occupy K subchannels in the frequency domain, and each subchannel can include N consecutive PRBs. K can be an integer greater than 0, and N can be an integer greater than 0.

[0081] As shown in FIG9( b ), when a time slot includes a PSFCH channel, the second to last and third to last symbols in the time slot can be used for PSFCH channel transmission, and a time domain symbol before the PSFCH channel can be used as a GP symbol.

[0082] PSSCH

[0083] In some sidelink communication systems (such as NR-V2X systems), PSSCH can be used to carry second-order sidelink control information (SCI). The second-order SCI can include SCI 2-A or SCI 2-B. The second-order SCI can use Polar coding. The second-order SCI can be fixedly modulated with QPSK. The data part of PSSCH can use low-density parity check (LDPC). The highest modulation order that the data part of PSSCH can support is 256QAM.

[0084] In some sideline communication systems (such as NR-V2X systems), PSSCH supports up to two stream transmissions and uses a unit precoding matrix to map data on two layers to two antenna ports. At most, only one TB can be sent in one PSSCH. However, unlike the transmission method of the PSSCH data part, when PSSCH adopts a dual-stream transmission method, the modulation symbols sent by the second-order SCI on the two streams are exactly the same. This design can ensure the reception performance of the second-order SCI in highly correlated channels.

[0085] In some sideline communication systems (such as NR-V2X systems), the maximum number of retransmissions of a PSSCH is 32 times. If there are PSFCH resources in the resource pool and the configuration period of the PSFCH resources is 2 or 4, the OFDM symbols available in the time slot where different transmissions of a PSSCH are located may change. Figure 10 is an example diagram of the change in the available OFDM symbols of the PSSCH in different time slots. As shown in Figure 10, due to the existence of PSFCH resources, the number of OFDM symbols available for the nth transmission and the n+1th transmission of the PSSCH is different. If the number of symbols transmitted by the PSSCH is calculated according to the actual number of OFDM symbols in a time slot The difference in the number of symbols available for PSSCH transmission in a time slot may cause Q′ SCI2 Different, and Q′ SCI2 The change of will lead to the change of the size of the TB carried by PSSCH, as described below. In order to ensure that the transmission block size (TBS) remains unchanged during multiple transmissions of PSSCH, The actual number of PSFCH symbols is not used. The number of resource elements (REs) occupied by the PSSCH demodulation reference signal (DMRS) and the number of REs occupied by the phase-tracking reference signal (PT-RS), which may change during the retransmission process, are not taken into account.

[0086] The code rate of the second-order SCI can be dynamically adjusted within a certain range, and the specific code rate used can be indicated by the first-order SCI. Therefore, even after the code rate changes, the receiver does not need to perform blind detection on the second-order SCI. Figure 11 shows an example of the time-frequency resources occupied by the second-order SCI in a time slot. As shown in Figure 11, the modulation symbols of the second-order SCI can be mapped starting from the symbol where the first PSSCH DMRS is located, using a frequency domain first and then a time domain mapping. In the OFDM symbol where the DMRS is located, the second-order SCI can be mapped to REs not occupied by the DMRS.

[0087] Within a resource pool, the data portion of the PSSCH can use multiple different modulation and coding scheme (MCS) tables. For example, one or more of the following tables can be used: the conventional 64QAM MCS table, the 256QAM MCS table, and the low spectrum efficiency 64QAM MCS table. In a transmission, the specific MCS table used for the data portion of the PSSCH can be indicated by the "MCS table indication" field in the first-order SCI. In order to control the PAPR, the PSSCH must be sent using continuous PRBs. Since the subchannel is the minimum frequency domain resource granularity of the PSSCH, the PSSCH must occupy continuous subchannels.

[0088] Sidelink TBS

[0089] PSSCH follows the TBS determination mechanism of PDSCH and PUSCH, that is, the TBS can be determined based on the reference value of the number of REs used for PSSCH in the time slot where PSSCH is located, so that the actual code rate is as close to the target code rate as possible. It should be noted that the purpose of using the reference value of the number of REs instead of the actual number of REs is to ensure that the number of REs used to determine the TBS remains unchanged during the PSSCH retransmission process, so that the determined TBS size remains the same. To achieve this goal, the reference value of the number of REs occupied by PSSCH in the TBS determination process is set to 0.

[0090] N RE It can be determined according to the following formula:

[0091] Among them, n PRB is the number of PRBs occupied by PSSCH, is the number of REs occupied by the first-order SCI (including the REs occupied by the DMRS of the PSCCH), is the number of REs occupied by the second-order SCI (as described above), N′ RE Indicates that a PRB

[0092] The number of reference REs that can be used for PSSCH. N'RE It can be determined by the following formula:

[0093]

[0094] in, It can represent the number of subcarriers in a PRB, for example, Indicates the number of symbols available for sidelink in a time slot, which may not include the last GP symbol and the first symbol used for AGC. A reference value indicating the number of symbols occupied by the PSFCH, for example, or 3. The specific value can be indicated by the "PSFCH symbol number" field in the first-order SCI. It can represent the reference value of the number of REs occupied by PT-RS and channel state information-reference signal (CSI-RS), and can be configured by radio resource control (RRC) layer parameters. It can represent the average number of DMRS REs in a time slot, which is related to the DMRS pattern allowed in the resource pool. Table 1 shows the DMRS pattern allowed in the resource pool and The corresponding relationship.

[0095] Table 1

[0096]

[0097] Sidelink DMRS

[0098] In some sideline communication systems (such as NR-V2X systems), the DMRS pattern of the PSCCH can be the same as that of the physical downlink control channel (PDCCH). That is, the DMRS can exist on each OFDM symbol of the PSCCH and can be located in the {#1, #5, #9} REs of a PRB in the frequency domain. Figure 12 is a schematic diagram of a DMRS pattern of the PSCCH. The DMRS sequence of the PSCCH is generated by the following formula:

[0099]

[0100] Among them, the pseudo-random sequence c(m) can be obtained by Initialize. Wherein, l can represent the index of the OFDM symbol where the DMRS is located in the time slot, It can represent the index of the time slot where the DMRS is located in the system frame. It can represent the number of OFDM symbols in a time slot, N ID ∈{0,1,…,65535}, in a resource pool N ID The specific value is configured or pre-configured by the network.

[0101] Some sideline communication systems (such as NR-V2X systems) use multiple time-domain PSSCH DMRS patterns, which draws on the design of the Uu interface of the NR system. Within a resource pool, the number of available DMRS patterns can be related to the number of PSSCH symbols in the resource pool. For a specific number of PSSCH symbols (including the first AGC symbol) and PSCCH symbols, the available DMRS patterns and the position of each DMRS symbol within the pattern are shown in Table 2. Figure 13 shows the time-domain position of four DMRS symbols when the PSSCH has 14 symbols.

[0102] Table 2

[0103]

[0104] If multiple time-domain DMRS patterns are configured within the resource pool, the transmitting terminal device selects the specific time-domain DMRS pattern to use and indicates this in the first-order SCI. This design allows high-speed terminal devices to select a high-density DMRS pattern, thereby ensuring channel estimation accuracy, while low-speed terminal devices can use a low-density DMRS pattern, thereby improving spectral efficiency.

[0105] The generation method of the PSSCH DMRS sequence is almost identical to that of the PSCCH DMRS sequence. The only difference is the initialization formula c(m) of the pseudo-random sequence. init middle, Among them, p i The ith CRC bit of the PSCCH that schedules the PSSCH. L may be the number of bits of the PSCCH CRC, for example, L=24.

[0106] In the NR communication system, two frequency domain DMRS patterns are supported in PDSCH and PUSCH, namely DMRS frequency domain type 1 and DMRS frequency domain type 2. For each frequency domain type, there are two different types: single DMRS symbol and double DMRS symbol. Single-symbol DMRS frequency domain type 1 supports 4 DMRS ports, and single-symbol DMRS frequency domain type 2 can support 6 DMRS ports. In the case of double DMRS symbols, the number of supported ports is doubled. However, in sideline communication systems (such as NR-V2X), since PSSCH only needs to support two DMRS ports at most, only single-symbol DMRS frequency domain type 1 can be supported. Figure 14 is an example diagram of a single-symbol DMRS frequency domain type 1.

[0107] Sidelink CSI-RS

[0108] The sidelink communication system can support sidelink CSI-RS (SL CSI-RS) to better support unicast communication. SL CSI-RS can be transmitted when the following three conditions are met: the terminal device transmits the corresponding PSSCH (that is, the terminal device cannot only transmit SL CSI-RS); higher-layer signaling activates SL CSI-RS reporting; when higher-layer signaling activates SL CSI-RS reporting, the corresponding bit in the second-order SCI sent by the terminal device triggers SL CSI-RS reporting.

[0109] The maximum number of ports supported by SL CSI-RS is 2. Two ports are SL CSI-RSs from different ports, multiplexed via code division on two adjacent REs within the same OFDM symbol. The number of SL CSI-RSs per port within a PRB is 1, meaning the density is 1. Therefore, an SL CSI-RS appears in at most one OFDM symbol within a PRB. The specific location of this OFDM symbol can be determined by the transmitting terminal device. To avoid impacting the resource mapping of the PSCCH and second-order SCI, the SL CSI-RS cannot be located in the same OFDM symbol as the PSCCH and second-order SCI. Because the channel estimation accuracy of the OFDM symbol where the PSSCH DMRS resides is higher, and the SL CSI-RSs of two ports occupy two consecutive REs in the frequency domain, the SL CSI-RS cannot be transmitted in the same OFDM symbol as the PSSCH DMRS. The OFDM symbol location of the SL CSI-RS is indicated by the sl-CSI-RS-FirstSymbol parameter in the PC5RRC.

[0110] The position of the first RE occupied by SL CSI-RS in a PRB can be indicated by the sl-CSI-RS-FreqAllocation parameter in PC5RRC. If SL CSI-RS is one port, the parameter can be a bitmap with a length of 12, corresponding to 12 REs in one PRB. If SL CSI-RS is two ports, the parameter is a bitmap with a length of 6. In this case, SL CSI-RS can occupy two REs, 2f(1) and 2f(1)+1. Among them, f(1) can represent the index of the bit with a value of 1 in the above bitmap. The frequency domain position of SL CSI-RS can also be determined by the transmitting terminal device. The determined frequency domain position of SL CSI-RS cannot conflict with PT-RS. Figure 15 is an example diagram of the time-frequency position of SL CSI-RS. In FIG15 , the number of SL CSI-RS ports is 2, the sl-CSI-RS-FirstSymbol is 8, and the sl-CSI-RS-FreqAllocation is [b5, b4, b3, b2, b1, b0] = [0, 0, 0, 1, 0, 0].

[0111] Unlicensed spectrum communications

[0112] Unlicensed spectrum is spectrum designated by countries and regions for use by radio equipment. This spectrum is generally considered shared spectrum, meaning that as long as communications equipment meets national or regional regulatory requirements for the spectrum, it can use it without having to apply for exclusive spectrum authorization from the national or regional spectrum management agency. Unlicensed spectrum may also be referred to as shared spectrum, unlicensed spectrum, unlicensed frequency band, or unlicensed frequency band.

[0113] In LTE systems, unlicensed spectrum has been used as a supplementary frequency band to licensed spectrum for cellular networks. NR systems can achieve seamless cellular network coverage, high spectral efficiency, high peak rates, and high reliability. NR systems can also use unlicensed spectrum as part of 5G cellular network technology to provide services to users. The 3GPP Release 16 standard discusses NR systems using unlicensed spectrum, referred to as NR-unlicensed (NR-U) systems.

[0114] The NR-U system supports two networking modes: licensed spectrum assisted access and unlicensed spectrum independent access. Licensed spectrum assisted access requires the use of licensed spectrum to access the network, and unlicensed spectrum is used as a secondary carrier. Unlicensed spectrum independent access can independently network through unlicensed spectrum, and terminal devices can directly access the network through unlicensed spectrum. The range of unlicensed spectrum used by the NR-U system introduced in 3GPP R16 is concentrated in the 5GHz and 6GHz frequency bands. For example, in the United States, the range of unlicensed spectrum is 5925–7125MHz; in Europe, the range of unlicensed spectrum is 5925–6425MHz. In the R16 standard, band 46 (5150MHz-5925MHz) is newly defined for use as unlicensed spectrum.

[0115] The use of unlicensed spectrum needs to meet the specific regulatory requirements of each country and region. For example, communication equipment can use unlicensed spectrum to achieve channel access on the unlicensed spectrum through channel monitoring to avoid conflicts with other communication equipment or other communication systems (such as WiFi systems). As an implementation method, communication equipment can use unlicensed spectrum in accordance with the principle of "listen-before-talk" (LBT). Therefore, for NR-U, NR technology needs to be enhanced accordingly to adapt to the regulatory requirements of unlicensed frequency bands, while efficiently utilizing unlicensed spectrum to provide services. In the 3GPP R16 standard, the standardization of NR-U technology in the following aspects is mainly completed: channel monitoring process; initial access process; control channel design; HARQ and scheduling; scheduling-free authorized transmission, etc.

[0116] LBT

[0117] The LBT principle may include: before a communication device uses a channel on an unlicensed spectrum to send a signal, it must first perform LBT. In the case of a successful LBT, the result of the channel monitoring is that the channel is idle. Only when the channel is idle can the communication device send a signal through the channel. If the channel monitoring result of the communication device on the channel is that the channel is busy or LBT fails, then the communication device cannot send a signal through the channel. In addition, in order to ensure fairness in the use of spectrum resources of the shared spectrum, if a communication device succeeds in LBT on a channel on an unlicensed spectrum, the duration for which the communication device can use the channel for communication transmission cannot exceed a certain duration. By limiting the maximum duration for communication after a successful LBT, this mechanism can give different communication devices the opportunity to access the shared channel, thereby allowing different communication systems to coexist in a friendly manner on the shared spectrum.

[0118] Signal transmission in unlicensed spectrum involves concepts related to channel occupancy, such as channel occupancy time (COT), maximum channel occupancy time (MCOT), the COT of network devices (such as base stations), and the COT of terminal devices.

[0119] MCOT refers to the maximum duration a communication device is allowed to transmit signals using unlicensed spectrum channels if LBT is successful. It should be understood that MCOT refers to the duration of signal transmission. Different communication devices with different channel access priorities may have different MCOT values. For example, the maximum MCOT value can be set to 10ms.

[0120] FIG16 is an example diagram showing a channel occupancy time obtained by a communication device after successful LBT on a channel of an unlicensed spectrum, and signal transmission using resources within the channel occupancy time.

[0121] Although channel sensing is not a global regulatory requirement, it can provide interference avoidance and coexistence benefits for communication systems on shared spectrum. Therefore, during the design of NR systems on unlicensed spectrum, channel sensing is a feature that communication equipment in the system must support.

[0122] Multiple consecutive slot transmission (MCSt)

[0123] As mentioned above, on the unlicensed spectrum, the communication device needs to perform LBT first, and can only access the channel after the LBT is successful. As shown in Figure 16, after the communication device successfully accesses the channel through LBT, within the corresponding COT, the communication device can transmit continuously or discontinuously. On the one hand, in order to make more full use of the COT initiated after the LBT is successful, the concept of MCSt transmission may be introduced in SL-U, that is, the communication device can transmit continuously on multiple time slots to improve the utilization rate of COT. On the other hand, the use of MCSt transmission can continuously use / occupy the channel, which is conducive to competing for the channel with foreign systems (for example, Wi-Fi systems) and avoiding foreign systems accessing the channel through LBT. For example, when the SL-U terminal adopts MCSt transmission, since the channel can be continuously occupied within the COT, at this time, the Wi-Fi user cannot access the channel through LBT.

[0124] In an embodiment of the present application, MCSt can be understood as occupying all time domain resources in multiple time slots for continuous transmission. Of course, MCSt can also be understood as occupying part of the time domain resources of one or some time slots in multiple time slots for continuous transmission. In this case, there may be time intervals between the time domain resources occupied by MCSt, but since MCSt occupies each time slot in multiple time slots, it can still be regarded as a continuous transmission.

[0125] In addition, in the embodiment of the present application, MCSt can also be referred to as “continuous time slot transmission” or “back-to-back (B2B) transmission”. The embodiment of the present application does not limit the name of this transmission mode.

[0126] Channel access methods for unlicensed or shared spectrum

[0127] Some communication systems (such as NR-U systems) introduce channel access via LBT. Some communication systems may also support channel access via short control signaling transmission (SCSt). The following describes these two channel access methods.

[0128] From a system networking perspective, LBT can be implemented in two ways: load-based equipment (LBE) LBT, also known as dynamic channel monitoring or dynamic channel occupancy; and frame-based equipment (FBE) LBT, also known as semi-static channel monitoring or semi-static channel occupancy. The principle of dynamic channel monitoring LBT is that a communication device performs LBT on a carrier in unlicensed spectrum upon service arrival and begins transmitting signals on that carrier after successful LBT.

[0129] The LBT mode of dynamic channel monitoring may include a Type 1 (Type 1) channel access mode and a Type 2 (Type 2) channel access mode.

[0130] The following describes in detail the Type 1 channel access method and the Type 2 channel access method using a network device as an example. It is understandable that the channel monitoring process of other communication devices such as terminal devices using the Type 1 channel access method or the Type 2 channel access method is similar.

[0131] Type 1 channel access method can also be called multi-slot channel detection with random backoff based on contention window size adjustment. In type 1 channel access method, the communication device can initiate channel occupation of length Tmcot based on the channel access priority p. If the network device uses type 1 channel access method, then the network device can not only send its own data during the channel occupation period, but also share the COT with the terminal device. The so-called sharing of COT with the terminal device means: allowing the terminal device to send data within the time length corresponding to the COT (that is, the COT obtained by the network device through channel access). Accordingly, if the terminal device uses type 1 channel access method, then the terminal device can not only send its own data during the channel occupation period, but also share the COT with the network device.

[0132] Table 3 shows the channel access priority and its corresponding parameters when the terminal device performs type 1 channel access.

[0133] Table 3

[0134]

[0135]

[0136] The default channel access mode on the network device side is type 1 channel access mode. The channel access parameters corresponding to the channel access priority p are shown in Table 3. In Table 3, m p It can refer to the number of fallback slots corresponding to the channel access priority p, CW p It can refer to the contention window (CW) size corresponding to the channel access priority p. min,p It can refer to the CW corresponding to the channel access priority p p Minimum value, CW max,p It can refer to the CW corresponding to the channel access priority p p The maximum value, T mcot,p It refers to the maximum channel occupancy time corresponding to the channel access priority p.

[0137] Type 2 channel access is also known as a channel access method based on fixed-length channel monitoring slots. Type 2 channel access includes Type 2A, Type 2B, and Type 2C. When resources within a COT are shared with other communication devices, the other communication devices can use Type 2 channel access.

[0138] In Type 2A channel access, a communication device can use a single-slot detection of the channel every 25 us. This means that the communication device can begin channel detection 25 us before starting to send data. This 25 us channel detection can include one 16 us channel detection and one 9 us channel detection. If both detection results indicate that the channel is idle, the channel is considered idle and channel access can be performed.

[0139] In the Type 2B channel access method, the communication device can use a 16-us single-slot channel detection process. During the channel detection process, if the communication device detects that the channel is idle for more than 4 us within the last 9 us, it can be considered that the channel is idle.

[0140] In the Type 2C channel access method, communication devices can transmit data directly over the channel without performing channel detection. In the Type 2C channel access method, the time difference between the current transmission and the previous transmission is less than or equal to 16us. In other words, if the time difference between two transmissions is less than or equal to 16us, they can be considered to be the same transmission and channel detection is not required. It should be noted that in the Type 2C channel access method, the transmission time of communication devices is limited and generally cannot exceed 584us.

[0141] The above introduces the channel access method based on LBT, and the following introduces SCSt. In the unlicensed spectrum, in order to improve the success rate of communication equipment accessing the channel when transmitting control signaling, SCSt is introduced. SCSt is a transmission in which the communication device does not sense whether there are other signals on the channel. For example, SCSt is a transmission used by the communication device to send management and control frames without sensing whether there are other signals on the channel. In other words, when a communication device adopts SCSt, the communication device does not need to listen to the channel to access the channel for transmission. However, the use of SCSt needs to meet certain conditions. For example, if a communication device hopes to use SCSt for channel access, the communication device needs to meet one or more of the following conditions: within the observation period of 50ms, the number of times SCSt is used is less than or equal to 50; and within the observation period of 50ms, the duration occupied by SCSt does not exceed 2.5ms.

[0142] From the above content, it can be seen that the channel access mechanism of type 1 requires a relatively long channel monitoring process. In the case of successful channel access, it is necessary to perform another short LBT (i.e., LBT with a shorter duration) before sending to ensure that the resources are not snatched away by users of other systems (such as WiFi users). In addition, the sending resources after successful access through type 1 can be shared with other communication devices. For example, in a possible design of sidelink unlicensed (SL-U), the terminal device can share the sending resources after successful type 1 access with other terminal devices, while other terminal devices need to perform Type-2A / B / C LBT before sending in shared resources (such as COT resources) according to specific conditions to ensure that the resources are still valid and have not been snatched away before sending.

[0143] Resource reservation for sideline communication

[0144] As described above in the sidelink communication mode, in Mode 2, the terminal device can autonomously select sidelink resources to transmit data. Resource reservation can be understood as a prerequisite for supporting resource selection by the terminal device. Resource reservation means that the terminal device can reserve selected sidelink resources (e.g., time-frequency resources) in the first sidelink control information carried by the PSCCH.

[0145] Currently, in the sideline communication system, both intra-TB resource reservation and inter-TB resource reservation are supported, which will be described below with reference to FIG17 .

[0146] Referring to Figure 17, the terminal device sends a first sidelink control information (SCI), using the time resource assignment field and frequency resource assignment field in the first SCI to indicate the N time-frequency resources used for the current TB transmission (including the time-frequency resources used for the current transport block (TB)). Generally, N≤Nmax. In NR V2X, Nmax is equal to 2 or 3. At the same time, the above-mentioned N indicated time-frequency resources can be distributed within W time slots. In NR V2X, W is equal to 32.

[0147] Continuing with FIG17 , during the transmission of TB 1, the terminal device can send a first SCI in the PSCCH simultaneously with the initial transmission data in the PSSCH, and use the two fields in the first SCI to indicate the time-frequency resource locations for the initial transmission and retransmission 1 (i.e., N=2 in this case), thereby reserving time-frequency resources for retransmission 1. Typically, the initial transmission and retransmission 1 are distributed within 32 time slots in the time domain.

[0148] Similarly, referring to Figure 17 , during the transmission of TB 1, the terminal device can use the first SCI sent in the PSCCH of retransmission 1 to indicate the time-frequency resources for retransmission 1 and retransmission 2. The time-frequency resources for retransmission 1 and retransmission 2 can be distributed within 32 time slots in the time domain.

[0149] In addition, when the terminal device sends the first SCI, it can use the resource reservation period field in the first SCI to reserve resources between TBs.

[0150] Continuing to refer to Figure 17, when the terminal device sends the first SCI indicating the initial transmission resources of TB 1, it can use the time domain resource allocation domain and frequency domain resource allocation domain in the first SCI to indicate the time-frequency resource position of the initial transmission and retransmission 1 of TB 1, which is recorded as {(t1, f1), (t2, f2)}. Among them, t1 and t2 represent the time domain positions of the initial transmission and retransmission 1 resources of TB 1, and f1 and f2 represent the frequency domain positions of the initial transmission and retransmission 1 resources of TB 1. If the value of the resource reservation period domain in the first SCI is 100 milliseconds, the first SCI also indicates the time-frequency resources {(t1+100, f1), (t2+100, f2)}, and these two resources are used for the transmission of the initial transmission and retransmission 1 of TB 2.

[0151] Similarly, the first SCI sent on the retransmission 1 resource of TB 1 can also reserve the time-frequency resources for retransmission 1 and retransmission 2 of TB 2 using the resource reservation period field. In NR V2X, the possible values ​​of the resource reservation period field are 0, 1-99, 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000 milliseconds, which is more flexible than LTE V2X. However, in each resource pool, usually only e types of values ​​are configured, and the terminal device can determine the possible values ​​to be used based on the resource pool used. The e types of values ​​in the resource pool configuration are recorded as the resource reservation period set M. For example, e is less than or equal to 16.

[0152] In addition, through network configuration or pre-configuration, the above-mentioned reservation between TBs can be activated or deactivated in units of resource pools. When deactivating the reservation between TBs, the resource reservation period field is not included in the first SCI. Generally, before triggering resource reselection, the value of the resource reservation period field used by the terminal device, that is, the resource reservation period, will not change. Each time the terminal device sends the first SCI, it uses the "resource reservation period field" therein to reserve the resources of the next period for the transmission of another TB, thereby achieving periodic semi-continuous transmission.

[0153] When a terminal device operates in Mode 2, it can obtain the first SCI sent by other terminal devices by listening to the PSCCH sent by other terminal devices, thereby learning the resources reserved by other terminal devices. When the terminal device subsequently selects resources, it will exclude the resources reserved by other terminal devices to avoid resource collisions.

[0154] Referring to the resource reservation method introduced above in combination with Figure 17, it can be seen that in the traditional resource reservation method, the terminal device can reserve resources with a single time slot as the granularity through SCI. If continuous time slot transmission is introduced in the side communication scenario, the traditional resource reservation method may not match the continuous time slot transmission.

[0155] Therefore, to support continuous time slot transmission, an embodiment of the present application provides a wireless communication method in which a terminal device can reserve resources at the granularity of a time domain resource group. In some implementations, a time domain resource group can include one or more time domain resources. If a time domain resource group includes multiple time domain resources, these multiple time domain resources are continuous in the time domain. For example, a time domain resource group can include one or more time slots, and therefore, a time domain resource group can also be referred to as a "time slot group." Of course, in an embodiment of the present application, the above-mentioned time domain resources can also be other time domain units, such as subframes.

[0156] It should be noted that, in the embodiment of the present application, the above-mentioned time domain resource group can also be understood as a time domain resource set, and each time domain resource set can include one or more time domain resources. If the time domain resource set includes multiple time domain resources, these time domain resources are continuous in the time domain, that is, the time domain resource set includes multiple time domain resources that are continuous in the time domain. Of course, in the embodiment of the present application, the time domain resource group or time domain resource set is also introduced for the convenience of description, that is, the concept of time domain resource group or time domain resource set may not exist in the communication system. In this case, the time domain resource group or time domain resource set can be replaced by "continuous time domain resources". Accordingly, one time domain resource group can be replaced by "one continuous time domain resource", and multiple time domain resource groups can be replaced by "multiple continuous time domain resources".

[0157] For ease of understanding, the following takes the time slot group as an example and introduces the time slot group of an embodiment of the present application and the distribution method of multiple time slot groups in combination with Figures 18 to 22.

[0158] From a time domain perspective, in time domain distribution mode 1, multiple time slot groups may be discontinuous in the time domain. Taking time slot group g1 and time slot group g2 as an example, there may be a gap of P time slots between time slot group g1 and time slot group g2, where P is a positive integer greater than or equal to 1.

[0159] In time domain distribution mode 2, multiple time slot groups can also be continuous in the time domain. Taking time slot group g1 and time slot group g2 as an example, there can be a gap of P time slots between time slot group g1 and time slot group g2, where P is 0. In other words, time slot group g1 and time slot group g2 are continuous in the time domain.

[0160] Of course, in an embodiment of the present application, the above two time domain distribution methods can also be used in combination, that is, some adjacent time slot groups in multiple time slot groups can be continuous in the time domain, and other adjacent time slot groups in multiple time slot groups can be discontinuous in the time domain.

[0161] In time domain distribution mode 3, the number of time slots contained in each of the multiple time slot groups can be the same. Taking time slot group g1 and time slot group g2 as examples, the number of time slots contained in time slot group g1 can be P1, and the number of time slots contained in time slot group g2 can be P2, where P1 is equal to P2.

[0162] In time domain distribution mode 4, the number of time slots contained in each of the multiple time slot groups may be different. Taking time slot group g1 and time slot group g2 as examples, the number of time slots contained in time slot group g1 may be P1, and the number of time slots contained in time slot group g2 may be P2, where P1 is not equal to P2.

[0163] Of course, in an embodiment of the present application, the above two time domain distribution methods can also be used in combination, that is, the number of time slots included in some time slot groups in multiple time slot groups can be the same, and the number of time slots included in some time slot groups in multiple time slot groups can be different.

[0164] The following describes the frequency domain distribution of the time slot groups in an embodiment of the present application, taking one time slot group and multiple time slot groups as examples. It should be noted that in an embodiment of the present application, the frequency domain position may include a frequency domain starting position, a frequency domain ending position, or may also be a certain position in the frequency domain. Among them, the frequency domain resources may be frequency domain division units such as RBs, PRBs, RB sets, and subchannels, which are not limited in the embodiment of the present application. Accordingly, the number of the above-mentioned frequency domain resources may be the number of subchannels, the number of RB sets, the number of PRBs, the number of RBs, etc.

[0165] In some implementations, when the frequency domain position of a time slot group is the frequency domain starting position, the frequency domain starting position may be the first frequency domain resource among the frequency domain resources included in the time slot group. In some implementations, the first frequency domain resource may be understood as the frequency domain resource with the lowest frequency domain position among the frequency domain resources included in the time slot group. Taking the frequency domain resource as a subchannel as an example, the first frequency domain resource may be the subchannel with the lowest frequency domain position among the subchannels included in the time slot group.

[0166] In other implementations, the last frequency domain resource may also be understood as the frequency domain resource with the smallest index among the frequency domain resources included in the time slot group. Taking the frequency domain resource as a subchannel as an example, the last frequency domain resource may be the subchannel with the smallest index among the subchannels included in the time slot group.

[0167] Accordingly, when the frequency domain position of a time slot group is the frequency domain end position, the frequency domain end position may be the last frequency domain resource among the frequency domain resources included in the time slot group. In some implementations, the last frequency domain resource may be understood as the frequency domain resource with the highest frequency domain position among the frequency domain resources included in the time slot group. Taking the frequency domain resource as a subchannel as an example, the last frequency domain resource may be the subchannel with the highest frequency domain position among the subchannels included in the time slot group.

[0168] In other implementations, the last frequency domain resource may also be understood as the frequency domain resource with the largest index among the frequency domain resources included in the time slot group. Taking the frequency domain resource as a subchannel as an example, the last frequency domain resource may be the subchannel with the largest index among the subchannels included in the time slot group.

[0169] Based on the above introduction, it can be seen that the frequency domain position can be represented by the frequency domain resource. Therefore, in the embodiment of the present application, the frequency domain position can be indicated by the indication information of the frequency domain resource. For example, the frequency domain position can be the index of the frequency domain resource. The index of the frequency domain resource can be, for example, a subchannel index, an RB set index, an RB index, and a PRB index.

[0170] Taking a time slot group as an example, from the frequency domain point of view, in frequency domain distribution mode 1, in each time slot within the time slot group, the frequency domain resources contained in the time slot group can be the same, or in other words, the frequency domain position and frequency domain resource length of the frequency domain resources within the time slot group are the same.

[0171] Assuming that the time slot group can include time slot 1 to time slot 4, as shown in Figure 18, in each time slot from time slot 1 to time slot 4, the frequency domain starting position of the frequency domain resources contained in the time slot group is the same, and the frequency domain resource length of the frequency domain resources contained in the time slot group in each time slot is the same.

[0172] In frequency domain distribution mode 2, in each time slot within a time slot group, the frequency domain resources contained in the time slot group may be different, or in other words, the frequency domain positions and / or frequency domain resource lengths of the frequency domain resources within the time slot group are different. That is to say, in some implementations, the frequency domain positions of the frequency domain resources within the time slot group are different, and the frequency domain resource lengths of the frequency domain resources within the time slot group are different. Alternatively, the frequency domain positions of the frequency domain resources within the time slot group are the same, and the frequency domain resource lengths of the frequency domain resources within the time slot group are different. Alternatively, the frequency domain positions of the frequency domain resources within the time slot group are different, and the frequency domain resource lengths of the frequency domain resources within the time slot group are the same.

[0173] Taking different frequency domain positions as an example, assuming that the time slot group can include time slots 1 to time slots 4, as shown in Figure 19, in each time slot from time slots 1 to time slots 4, the frequency domain resource lengths of the frequency domain resources contained in the time slot group are the same, but the frequency domain starting positions of the frequency domain resources contained in the time slot group are different. In time slot 1, the frequency domain starting position of the frequency domain resources contained in the time slot group is position 1, and in time slot 1, the frequency domain starting position of the frequency domain resources contained in the time slot group is position 2. In time slot 1, the frequency domain starting position of the frequency domain resources contained in the time slot group is position 3, and in time slot 1, the frequency domain starting position of the frequency domain resources contained in the time slot group is position 4, where positions 1 to 4 are all different in the frequency domain.

[0174] It should be noted that, in the embodiment of the present application, the above-mentioned frequency domain distribution mode 1 and frequency domain distribution mode 2 can be used alone or in combination, and the embodiment of the present application does not limit this.

[0175] Taking multiple time slot groups as an example, from the frequency domain point of view, in frequency domain distribution mode 3, the frequency domain resources contained in each time slot group in the multiple time slot groups can be the same, or in other words, the frequency domain position and frequency domain resource length of the frequency domain resources contained in each time slot group are the same.

[0176] Assuming that multiple time slot groups may include time slot group 1 to time slot group 4, as shown in Figure 20, the frequency domain starting positions of the frequency domain resources contained in time slot group 1 to time slot group 4 are the same, and the frequency domain resource lengths of the frequency domain resources contained in each time slot group are the same.

[0177] In frequency domain distribution mode 4, the frequency domain resources contained in each of the multiple time slot groups may be different, or in other words, the frequency domain positions and / or frequency domain resource lengths of the frequency domain resources contained in each time slot group are different. That is to say, in some implementations, the frequency domain positions of the frequency domain resources contained in the time slot groups within the multiple time slot groups are different, and the frequency domain resource lengths of the frequency domain resources contained in the time slot groups within the multiple time slot groups are different. Alternatively, the frequency domain positions of the frequency domain resources contained in the time slot groups within the multiple time slot groups are the same, and the frequency domain resource lengths of the frequency domain resources contained in the time slot groups within the multiple time slot groups are different. Alternatively, the frequency domain positions of the frequency domain resources contained in the time slot groups within the multiple time slot groups are different, and the frequency domain resource lengths of the frequency domain resources contained in the time slot groups within the multiple time slot groups are the same.

[0178] Taking different frequency domain positions as an example, assuming that multiple time slot groups can include time slot group 1 to time slot group 4, as shown in Figure 21, the frequency domain resource lengths of the frequency domain resources in time slot group 1 to time slot group 4 are the same, but the frequency domain starting positions of the frequency domain resources in time slot group 1 to time slot group 4 are different. The frequency domain starting position of the frequency domain resources contained in time slot group 1 is position 1, the frequency domain starting position of the frequency domain resources contained in time slot group 2 is position 2, and the frequency domain starting position of the frequency domain resources contained in time slot group 3 is position 3, where positions 1 to 3 are all different in the frequency domain.

[0179] In frequency domain distribution mode 5, the frequency domain resources in the time slots corresponding to the multiple time slot groups are the same, or in other words, the frequency domain positions and frequency domain resource lengths of the frequency domain resources in the time slots corresponding to the multiple time slot groups are the same.

[0180] In some implementations, the time slots corresponding to multiple time slot groups can be understood as time slots with the same position within the multiple time slot groups, or the time slots corresponding to multiple time slot components can be understood as time slots with the same group number within the multiple time slot groups.

[0181] Taking different frequency domain positions as an example, assuming that multiple time slot groups can include time slot group 1 to time slot group 4, and the length of the frequency domain resources included in time slot group 1 to time slot group 4 is the same. As shown in Figure 22, time slot group 1 includes time slots 1 to 4, time slot group 2 includes time slots 1 to 4, and time slot group 3 includes time slots 1 to 4. Among them, time slot 1 in time slot group 1 to time slot group 3 is the corresponding time slot among the above multiple time slot groups, time slot 2 in time slot group 1 to time slot group 3 is the corresponding time slot among the above multiple time slot groups, time slot 3 in time slot group 1 to time slot group 3 is the corresponding time slot among the above multiple time slot groups, and time slot 4 in time slot group 1 to time slot group 3 is the corresponding time slot among the above multiple time slot groups.

[0182] Correspondingly, the frequency domain starting position of time slot 1 in time slot group 1 to time slot group 3 is position 1, the frequency domain starting position of time slot 2 in time slot group 1 to time slot group 3 is position 2, the frequency domain starting position of time slot 3 in time slot group 1 to time slot group 3 is position 3, and the frequency domain starting position of time slot 4 in time slot group 1 to time slot group 3 is position 4.

[0183] It should be noted that, in the embodiment of the present application, the frequency domain distribution modes 1 to 5 introduced above can be used alone or in combination, and the embodiment of the present application does not limit this.

[0184] In addition, in the embodiment of the present application, the length of the frequency domain resources can be understood as the number of frequency domain resources. Accordingly, the length of the frequency domain resources occupied by the time slot group can be understood as the number of frequency domain resources included in the time slot group.

[0185] The following describes the method according to an embodiment of the present application based on the time slot groups described above and in conjunction with FIG23. FIG23 is a schematic flow chart of the wireless communication method according to an embodiment of the present application. The method shown in FIG23 includes step S2310.

[0186] In step S2310, the first device sends or receives first control information in a first time slot.

[0187] In some implementations, the first device may be a terminal device. In other implementations, the first device may also be a network device, which is not limited in the present embodiment.

[0188] If the first device is a terminal device, the first control information may be sidelink control information. In this case, step S2310 may include the terminal device receiving or sending the first control information. If the first device is a terminal device, the first control information may also be downlink control information. In this case, step S2310 may include the terminal device receiving the first control information.

[0189] If the first device is a network device, correspondingly, the first control information may be downlink control information. In this case, the above step S2310 may include the network device sending the first control information to the terminal device.

[0190] In some implementations, the first control information may include first information, wherein the first information may be associated with one or more time slot groups, and the above one or more time slot groups are all used for continuous time slot transmission on an unlicensed spectrum, and the one or more time slot groups include a first time slot group where the first time slot is located and / or one or more second time slot groups, and the one or more second time slot groups are located after the first time slot group in the time domain and are associated with the first time slot group.

[0191] In some implementations, the first control information may be used to reserve one or more time slot groups. For example, if the first information is associated with a first time slot group, the first control information is used to reserve the first time slot group. For example, if the first information is associated with a first time slot group and a second time slot group, the first control information is used to reserve the first time slot group and the second time slot group. The first control information used to reserve a resource group may be a first-order SCI.

[0192] In some implementations, the first information is used to indicate one or more of the following: resource information for one or more time slot groups; and transport block information for one or more time slot groups. The following description in Example 1 uses the example of the first information including resource information, and in Example 2 uses the example of the first information including transport block information.

[0193] Embodiment 1: The first information includes resource information.

[0194] In an embodiment of the present application, resource information may be information related to frequency domain resources or information related to time domain resources. The following describes the two situations respectively.

[0195] Case 1: Resource information is related to time domain resources.

[0196] The resource information may include one or more of the following: the number of time slots contained in one or more time slot groups; the time domain position of one or more time slot groups; the time domain position of the first time slot in the first time slot group; and the number of untransmitted time slots in the first time slot group.

[0197] The following describes an implementation method in which resource information carries the number of time slots of one or more time slot groups in an embodiment of the present application.

[0198] In some implementations, if multiple time slot groups contain different numbers of time slots, the resource information may include the number of time slots corresponding to each of the multiple time slot groups. For example, if the multiple time slot groups include time slot group g1, time slot group g2, and time slot group g3, and the number of time slots in each of the three time slot groups is different, the resource information may include the number of time slots n1 for time slot group g1, the number of time slots n2 for time slot group g2, and the number of time slots n3 for time slot group g3, where n1, n2, and n3 are unequal positive integers.

[0199] Accordingly, if multiple time slot groups contain the same number of time slots, the resource information may include a time slot number corresponding to each of the multiple time slot groups. For example, if the multiple time slot groups include time slot group g1, time slot group g2, and time slot group g3, and the number of time slots in each of the three time slot groups is n1, the resource information may include the number of time slots n1. Of course, in this case, the resource information may also include multiple n1s to correspond to the multiple time slot groups. This is not limited in the present embodiment.

[0200] The following describes implementation methods of resource information carrying the time domain location of one or more time slot groups in an embodiment of the present application: implementation method 1 and implementation method 2.

[0201] In implementation method 1, the time domain position of a time slot group can be determined by the time domain starting position of the time slot group and the corresponding number of time slots. Of course, in the embodiment of the present application, the time domain position of a time slot group can be determined by the time domain starting position and the time domain ending position of the time slot group. Alternatively, the time domain position of a time slot group can be determined by the time domain ending position of the time slot group and the corresponding number of time slots. The embodiment of the present application is not limited to this.

[0202] It should be noted that the above-mentioned method of indicating the time domain position of the time slot group can be applicable to the case where the resource information is for one time slot group, and can also be applicable to the case where the resource information is for multiple time slot groups. If the resource information is for multiple time slot groups, each of the multiple time slot groups can be indicated using the method introduced above.

[0203] In implementation mode 2, the time domain position of a time slot group among multiple time slot groups can be determined based on a reference time domain position.

[0204] In some implementations, the time domain positions of one or more time slot groups may include a time domain starting position of a second time slot group, where the time domain starting position of the second time slot group is determined based on one or more of the following parameters: a reference time domain position; and an offset between the reference time domain position and the time domain starting position of the second time slot group (e.g., a time slot offset).

[0205] In embodiments of the present application, the reference time domain position and / or offset may be included in resource information. For example, the reference time domain position and offset may be included in resource information. In another example, the reference time domain position may be preconfigured or predefined, and the offset may be indicated in resource information.

[0206] The reference time domain position may include one or more of the following: a common time domain position; a time domain position of the first time slot in the first time slot group; a time domain position of the last time slot in the first time slot group; or a time slot position of the first time slot. Of course, in the embodiment of the present application, the reference time domain position may also be the time domain position of any time slot in the first time slot group.

[0207] The time domain position of the time slot group may include the time domain start position and the time domain end position of the time slot group. Of course, the time domain position may also be any time domain position in the time slot group, and this is not limited in the embodiments of the present application. The following description uses the time domain position of the time slot group as the time domain start position as an example. The determination method of the time domain end position of the time slot group or other time domain positions in the time slot group is similar, and for the sake of brevity, it will not be repeated below.

[0208] Taking the time domain position of the above-mentioned time slot group as the time domain starting position of a second time slot group as an example, the reference time domain position is time slot b with an index of P0, and the time slot offset is k1. Accordingly, the time domain starting position of the second time slot group (or the first time slot b1 in the second time slot group) is the time slot that is offset by k1 time slots from time slot b, which can be expressed as: the index of time slot b1 P1 = P0 + k1, where k1 and P0 are positive integers. Accordingly, the resource information can carry the time slot offset k1 and the index P0.

[0209] Taking the time domain position of the aforementioned time slot group as the time domain starting position of two second time slot groups as an example, assuming that the two second time slot groups are time slot group g2 and time slot group g3, the reference time domain position is time slot b with index P0, and the time slot offset corresponding to time slot group g2 is k2, and the time slot offset corresponding to time slot group g3 is k3, where k2, k3, and P0 are positive integers. Accordingly, the resource information may carry k2, k3, and P0.

[0210] Correspondingly, the time domain starting position of time slot group g2 (or the first time slot b2 in time slot group g2) is the time slot that is offset by k2 time slots from time slot b, which can be expressed as: index of time slot b2 P2 = P0 + k2. The time domain starting position of time slot group g3 (or the first time slot b3 in time slot group g3) is the time slot that is offset by k3 time slots from time slot b, which can be expressed as: index of time slot b3 P3 = P0 + k3.

[0211] In an embodiment of the present application, in addition to indicating the relevant information of the one or more second time slot groups, the resource information may also indicate the relevant information of the untransmitted time slots in the first time slot group. The untransmitted time slots may refer to the time slots selected after resource selection is completed. Alternatively, the untransmitted time slots may also be understood as the time slots that have not yet been transmitted in the time slots reserved by the first device. Alternatively, the untransmitted time slots may also be one or more time slots in the first time slot group that are located after the first time slot.

[0212] In some implementations, the resource information may include a time domain position of the first time slot in the first time slot group. The time domain position of the first time slot in the first time slot group may be indicated by an index of the first time slot in the first time slot group. The index may be used to indicate the number of the first time slot in the first time slot group. Of course, in the embodiments of the present application, the time domain position of the first time slot in the first time slot group may also be indicated by other means, which are not limited in the embodiments of the present application.

[0213] In some implementations, the resource information may include the number of untransmitted time slots in the first time slot group. In some implementations, the number of untransmitted time slots may be the number of time slots following the first time slot in the first time slot group. Assuming that the first time slot group includes five time slots and the first time slot is the second time slot in the first time slot group, the number of untransmitted time slots may be three.

[0214] In an embodiment of the present application, the resource information may further indicate the sum of the first time slot and the number of untransmitted time slots. Assuming that the first time slot group includes 5 time slots, the first time slot is the second time slot in the first time slot group, and accordingly, the number of untransmitted time slots may be 4.

[0215] In some scenarios, for a receiving terminal device that transmits continuously, such terminal device may need to know that there is data that is continuously transmitted in subsequent time slots. In this case, the number of untransmitted time slots can be carried in the resource information. Accordingly, the receiving terminal device can determine which time slots still need to receive data based on the number of untransmitted time slots.

[0216] In other scenarios, for terminal devices that perform resource monitoring, such terminal devices may need to know which subsequent time slots are occupied. In this case, the number of untransmitted time slots can be carried in the resource information. Accordingly, such terminal devices can determine the excluded time slots based on the number of untransmitted time slots.

[0217] It should be noted that when the time domain position of a time slot group is the time domain starting position, the time domain starting position may be the first time domain resource among the time domain resources included in the time slot group. In some implementations, the first time domain resource may be understood as the time domain resource with the earliest time domain position among the time domain resources included in the time slot group. Taking the time domain resource as a time slot as an example, the first time domain resource may be the time slot with the earliest time domain position among the time slots included in the time slot group.

[0218] In other implementations, the last time domain resource may also be understood as the time domain resource with the smallest index among the time domain resources included in the time slot group. Taking the time domain resource as a time slot as an example, the last time domain resource may be the time slot with the smallest index among the time slots included in the time slot group.

[0219] Accordingly, when the time domain position of a time slot group is the time domain end position, the time domain end position may be the last time domain resource among the time domain resources included in the time slot group. In some implementations, the last time domain resource may be understood as the time domain resource with the latest time domain position among the time domain resources included in the time slot group. Taking the time domain resource as a time slot as an example, the last time domain resource may be the time slot with the latest time domain position among the time slots included in the time slot group.

[0220] In other implementations, the last time domain resource may also be understood as the time domain resource with the largest index among the time domain resources included in the time slot group. Taking the time domain resource as a time slot as an example, the last time domain resource may be the time slot with the largest index among the time slots included in the time slot group.

[0221] Based on the above introduction, it can be seen that the time domain position of the time slot group can be represented by the time slots within the group, that is, the time domain starting position and / or the time domain ending position can be indicated by the time slots at the corresponding positions. For example, the time domain starting position can be the index or position of the first time slot in the time slot group. For another example, the time domain ending position can be the index or position of the last time slot in the time slot group. Of course, the above-mentioned time domain starting position and / or time domain ending position can also be indicated in other ways, for example, by combining time slots and symbols, and this embodiment of the present application is not limited to this.

[0222] Case 2: Resource information is related to frequency domain resources.

[0223] The above-mentioned resource information includes one or more of the following: the length of frequency domain resources contained in one or more time slot groups; the frequency domain position of one or more time slot groups; the frequency domain position of the first time slot in the first time slot group; the frequency domain position within the untransmitted time slot in the first time slot group; the length of frequency domain resources within the untransmitted time slot in the first time slot group.

[0224] The following describes an embodiment of the present application in which the resource information carries the length of the frequency domain resources included in one or more time slot groups, or in other words, the number of frequency domain resources included in one or more time slot groups.

[0225] In some implementations, if the frequency domain resources included in multiple time slot groups have different lengths, the resource information may include the frequency domain resource lengths corresponding to the multiple time slot groups. For example, if the multiple time slot groups include time slot group g1, time slot group g2, and time slot group g3, and the frequency domain resource lengths of the three time slot groups are different, the resource information may include the frequency domain resource length f1 of time slot group g1, the frequency domain resource length f2 of time slot group g2, and the frequency domain resource length f3 of time slot group g3, where f1, f2, and f3 are mutually exclusive positive integers.

[0226] Accordingly, if the frequency domain resource lengths of the frequency domain resources included in multiple time slot groups are the same, the resource information may include a frequency domain resource length corresponding to the multiple time slot groups. For example, if the multiple time slot groups include time slot group g1, time slot group g2, and time slot group g3, and the frequency domain resource lengths of the three time slot groups are all f1, the resource information may include the frequency domain resource length f1. Of course, in the above case, the resource information may also include multiple f1s to correspond to the multiple time slot groups. This embodiment of the present application is not limited to this.

[0227] The following describes implementation methods of resource information carrying the frequency domain positions of one or more time slot groups in an embodiment of the present application: implementation method 1 and implementation method 2.

[0228] In implementation method 1, the frequency domain position of the time slot group can be determined by the frequency domain starting position of the time slot group and the corresponding frequency domain resource length. Of course, in the embodiment of the present application, the frequency domain position of the time slot group can be determined by the frequency domain starting position and the frequency domain ending position of the time slot group. Alternatively, the frequency domain position of the time slot group can be determined by the frequency domain ending position of the time slot group and the corresponding frequency domain resource length, which is not limited in the embodiment of the present application.

[0229] It should be noted that the above-mentioned method of indicating the frequency domain position of the time slot group can be applicable to the case where the resource information is for one time slot group, and can also be applicable to the case where the resource information is for multiple time slot groups. If the resource information is for multiple time slot groups, each of the multiple time slot groups can be indicated using the method introduced above.

[0230] In implementation mode 2, the frequency domain position of a time slot group among multiple time slot groups can be determined based on a reference frequency domain position.

[0231] In some implementations, the frequency domain positions of one or more time slot groups may include a frequency domain starting position of a second time slot group, where the frequency domain starting position of the second time slot group is determined based on one or more of the following parameters: a reference frequency domain position; and an offset between the reference frequency domain position and the frequency domain starting position of the second time slot group (e.g., a subchannel offset).

[0232] In embodiments of the present application, the reference frequency domain position and / or offset may be included in resource information. For example, the reference frequency domain position and offset may be included in resource information. In another example, the reference frequency domain position may be preconfigured or predefined, and the offset may be indicated in resource information.

[0233] The reference frequency domain position includes one or more of the following: a common frequency domain position; a frequency domain position of the first subchannel in the first time slot group; a frequency domain position of the last subchannel in the first time slot group; or a frequency domain position of the first subchannel. Of course, in the embodiment of the present application, the reference frequency domain position may also be the frequency domain position of any subchannel in the first time slot group.

[0234] The frequency domain position of the time slot group may include a frequency domain starting position, a frequency domain ending position, etc. of the time slot group. Of course, the frequency domain position may also be any frequency domain position in the time slot group, and this is not limited in the embodiments of the present application. The following description uses the frequency domain position of the time slot group as the frequency domain starting position as an example. The determination method of the frequency domain ending position of the time slot group or other frequency domain positions in the time slot group is similar, and for the sake of brevity, it will not be repeated below.

[0235] Taking the frequency domain position of the aforementioned time slot group as the frequency domain starting position of a second time slot group as an example, the reference frequency domain position is subchannel b with index f0, and the subchannel offset is w1. Accordingly, the frequency domain starting position of the second time slot group (or the first subchannel b1 in the second time slot group) is the time slot offset by w1 time slots from subchannel b. This can be expressed as: index f1 of time slot b1 = f0 + w1, where w1 and f0 are positive integers. Accordingly, w1 and f0 can be carried in the resource information.

[0236] Taking the frequency domain position of the aforementioned time slot group as the frequency domain starting position of the two second time slot groups as an example, assuming that the two second time slot groups are time slot group g2 and time slot group g3, the reference frequency domain position is time slot b with index f0, and the subchannel offset corresponding to time slot group g2 is w2, and the subchannel offset corresponding to time slot group g3 is k3, where w2, w3, and f0 are positive integers. w2, w3, and f0 can be carried in the resource information.

[0237] Correspondingly, the frequency domain starting position of time slot group g2 (or the first time slot b2 in time slot group g2) is the time slot that is offset by k2 time slots from time slot b, which can be expressed as: index f2 of time slot b2 = f0 + k2. The frequency domain starting position of time slot group g3 (or the first time slot b3 in time slot group g3) is the time slot that is offset by w3 time slots from time slot b, which can be expressed as: index f3 of time slot b3 = f0 + k3.

[0238] In the embodiments of the present application, the information included in the resource information described above may be carried in one indication field of the first control information, or may be carried in multiple indication fields of the first control information, which is not specifically limited in the embodiments of the present application. The following describes how information such as the number of time slots and the time slot position is carried in the first control information as an example.

[0239] In some implementations, the first control information includes a first indication field and a second indication field. The first indication field is used to indicate the number of time slots included in one or more time slot groups, and the second indication field is used to indicate the time domain position of the one or more time slot groups. In other words, the number of time slots and the time domain position can be indicated in two indication fields respectively. Therefore, this indication method can also be called "distributed indication."

[0240] In some other implementations, the first control information includes a third indication field, which is used to indicate one or more of the following: the number of time slots included in one or more time slot groups; the time domain position of one or more time slot groups; and the interval between two time slot groups in one or more time slot groups. In other words, in this embodiment of the present application, a single indication field can carry multiple pieces of information; therefore, this indication method can also be referred to as a "joint indication."

[0241] The above-mentioned joint indication method can be implemented by jointly encoding each information. In some implementations, TRIV encoding method, FRIV encoding method, etc. can be adopted.

[0242] In some scenarios, the TRIV encoding method may be used to indicate the position between time slots, for example, to indicate the interval between the current time slot and the next time slot. For the TRIV encoding method, the input parameters are usually calculated by permutation and combination according to the maximum interval between the two time slots. Therefore, in an embodiment of the present application, when it is desired to indicate the position between the time slot groups through the first control information, the interval between the two time slot groups can also be indicated to facilitate adaptation of the TRIV encoding method. In some implementations, the interval between the above-mentioned two time slot groups can be less than or equal to the maximum interval corresponding to TRIV. Of course, other encoding methods can also be used in an embodiment of the present application. At this time, the relationship between the interval between the two time slot groups and the TRIV encoding method can be ignored.

[0243] In the embodiment of the present application, the maximum interval corresponding to TRIV can be obtained through configuration, pre-configuration, pre-definition, etc.

[0244] Assume that SCI1 is transmitted in a time slot y in time slot group g1. SCI1 may include an information field C indicating resource information of time slot group g1 and time slot group g2. The resource information includes the time domain starting position S of time slot group g1 and time slot group g2. Time slot group g1 and time slot group g2 include the number of time slots M. The resource position of time slot group g2 may be determined based on the resource position of time slot group g1. Therefore, time slot y in time slot group g1 may serve as the reference time domain position of time slot group g2.

[0245] Taking the joint coding method as an example, the parameters required for the joint coding include the time domain starting position of the time slot group g2, the number of time slots included in the time slot group g2, and the maximum time domain interval d1 between the time slot group g1 and the time slot group g2.

[0246] It should be noted that the method for determining the time domain position of time slot group 2 based on the time domain starting position of time slot group g2 and the number of time slots included in time slot group g2 can refer to the above methods 1 and 2 for determining the time domain position. For the sake of brevity, it will not be repeated here.

[0247] Assume that SCI1 is transmitted on a time slot y in time slot group g1. SCI1 may include an information field C indicating resource information of time slot group g1, time slot group g2, and time slot group g3. The resource information includes the time domain starting position S of time slot group g1, time slot group g2, and time slot group g3. Time slot group g1, time slot group g2, and time slot group g3 include the number of time slots M. The resource positions of time slot group g2 and time slot group g3 may be determined based on the resource position of time slot group g1. Therefore, time slot y in time slot group g1 may serve as the reference time domain position for time slot group g2 and time slot group g3.

[0248] Taking the joint coding method as an example, the parameters required for joint coding include the time domain starting position of time slot group g2; the number of time slots included in time slot group g2; the maximum time domain interval d1 between time slot group g1 and time slot group g2; the time domain starting position of time slot group g3; the number of time slots included in time slot group g3; and the maximum time domain interval d2 between time slot group g1 and time slot group g3.

[0249] It should be noted that the manner of determining the time domain position of time slot group 2 and the time domain position of time slot group g3 can refer to the above-mentioned manner 1 and manner 2 for determining the time domain position, which will not be described here for brevity.

[0250] In addition, in the embodiment of the present application, the above parameters d1 and d2 can be obtained through configuration, pre-configuration, pre-definition, etc.

[0251] In the embodiment of the present application, the frequency domain resource length and the frequency domain position may also be indicated in a distributed manner or in a joint manner. The distributed indication and joint indication methods are similar to the indication methods used for the frequency domain resource length and the frequency domain position. For details, please refer to the above description. For the sake of brevity, they will not be described in detail below.

[0252] Taking distributed indication as an example, the first control information may include a fourth indication field and a fifth indication field, the fourth indication field is used to indicate the frequency domain resource length contained in one or more time slot groups, and the fifth indication field is used to indicate the frequency domain position of one or more time slot groups.

[0253] Taking the joint indication as an example, the first control information includes a sixth indication field, and the sixth indication field is used to indicate one or more of the following: the length of the frequency domain resources included in one or more time slot groups; and the frequency domain position of one or more time slot groups.

[0254] In an embodiment of the present application, in order to distinguish the first control information from the control information corresponding to traditional single-slot transmission, the first control information can be configured to adopt a format different from the control information corresponding to traditional single-slot transmission. That is, the first control information is control information in the second format among multiple control information formats, and the multiple control information formats also include control information in the first format, wherein the control information in the first format corresponds to single-slot transmission, and the control information in the second format corresponds to continuous time slot transmission. Taking the control information as SCI as an example, the first format can be SCI format 0, and the second format can be SCI format 1.

[0255] Accordingly, to help communication devices distinguish between the two formats, in some implementations, the information in the second format may include an indication field indicating the second format. Of course, the two formats may also be distinguished by scrambling methods, i.e., the control information in the second format and the control information in the first format may be scrambled using different methods.

[0256] For example, the first format may be SCI format 0 and the second format may be SCI format 1. SCI format 1 may include an indication field (greater than or equal to 1 bit) to indicate a new SCI format.

[0257] For example, the first format may be SCI format 0 and the second format may be SCI format 1. Different scrambling methods (for example, CRC scrambling methods) may be used in SCI format 1 and SCI format 0.

[0258] In some implementations, the first format can have the same total information bit payload length as the second format.

[0259] In the embodiment of the present application, both continuous time slot transmission and single time slot transmission may correspond to control information in the first format. In this case, if the control information in the first format is used for continuous time slot transmission, the control information in the first format includes an indication field for indicating the number of continuous time slots. Conversely, if the control information in the first format is used for single time slot transmission, the control information in the first format does not include an indication field for indicating the number of continuous time slots.

[0260] For example, continuous time slot transmission and single time slot transmission can correspond to the existing control information format. Accordingly, the original TRIV indicator field in the existing control information can be retained. In addition, if the control information format corresponds to continuous time slot transmission, a new indicator field can be added to the existing control information format to indicate the number of time slots included in the time slot group. On the contrary, if the control information format corresponds to single time slot transmission, a new indicator field can be added to the existing control information format to indicate the number of time slots included in the time slot group.

[0261] To facilitate understanding of the present application, the following takes the first control information SCI1 as an example, and Figures 24 to 29 introduce a method of indicating the time domain resources included in the time slot group through the first information in an embodiment of the present application.

[0262] As shown in Figure 24, multiple time slot groups are time slot group g1, time slot group g2, and time slot group g3. Each time slot group may include four time slots. Time slot x in time slot group g1 contains the PSCCH and PSSCH, where the PSCCH carries SCI1 (usually the first stage SCI). In addition, time slot x may also include an AGC symbol (usually the first symbol), a PSFCH symbol, a GAP symbol, etc.

[0263] In some implementations, the SCI may include an indication field A for carrying the number of time slots included in the time slot group g1. In other implementations, the indication field A may also carry the number of time slots included in the subsequent time slot group g2 and the number of time slots included in the time slot group g3.

[0264] In some implementations, SCI1 may include an indication field B: used to carry and indicate the time domain starting position of time slot group g1, the time domain starting position of time slot group g2, and the time domain starting position of time slot group g3.

[0265] In some implementations, SCI1 may include an indication field F, indicating the time slot resource location where SCI1 is located, such as the second time slot (ie, time slot x) in the time slot group g1.

[0266] In some implementations, the format of the SCI1 described above is different from the format of the SCI corresponding to single-slot transmission. Specifically, SCI1 may use SCI format 1, and the format of the SCI corresponding to single-slot transmission may be SCI0. The indicator field in SCI format 1 may be used to indicate the time domain starting position of the time slot group and the number of time slots included in the time slot group.

[0267] As mentioned above, in SCI format 1, the above information can be indicated by using distributed indication or joint information.

[0268] Taking distributed indication as an example, the time domain starting position of a time slot group and the number of time slots contained in the time slot group can be indicated separately. For example, the time domain starting position can be indicated through SCI1, and the number of time slots can be indicated through configuration or pre-configuration information. For another example, the time domain starting position and the number of time slots can be indicated through different indication fields of SCI1.

[0269] Taking the joint indication as an example, the time domain starting position of the time slot group and the number of time slots included can be indicated by an indication field, for example, using a joint coding method, such as TRIV, FRIV, etc.

[0270] As shown in Figure 25, multiple time slot groups are time slot group g1 and time slot group g2. Each time slot group can include four time slots. Time slot b in time slot group g1 is used to carry SCI1. SCI1 includes indication field A and indication field B. Indication field B has two indication modes, which are described below.

[0271] The indication field A indicates that the time slot group g1 includes 4 time slots. In other implementations, the indication field A may also be used to indicate the number of time slots included in the time slot group g2.

[0272] Indicator field B indicates mode 1, indicating the time domain starting position of time slot group g1 and the time domain starting position of time slot group g2. The time domain starting position of time slot group g2 can be determined based on the time domain position of time slot b in time slot group g1. In this case, time slot b in time slot group g1 serves as a reference point for determining the time domain starting position of time slot group g2.

[0273] Accordingly, SCI1 can indicate the time domain starting position of time slot group g2 relative to the time slot b, and the time slot offset value K. If time slot b is the first time slot of time slot group g1, the corresponding time slot offset value K can be K1. If time slot b is the time slot in time slot group g1 in which SCI1 is transmitted, the corresponding time slot offset value K can be K2. If time slot b is the last time slot in time slot group g1, the corresponding time slot offset value K can be K3. In this case, the time domain starting position of time slot group g2, i.e., the index value P1 of time slot b', equals the index P0 of time slot b in time slot group g1 + K.

[0274] It should be noted that when the index P0 of the time slot b is 0, K can be used as the index value of the time slot b'.

[0275] Indicator field B indicates mode 2, indicating the reference time domain position P00, the time slot offset value K_b, and the time slot offset value K_b'. The time slot offset value K_b is the offset value between the reference time domain position and the time domain starting position of time slot group g1. The time slot offset value K_b' is the offset value between the reference time domain position and the time domain starting position of time slot group g2.

[0276] At this time, the time domain starting position of time slot group g2, that is, the index value P1 of time slot b', is equal to the reference time domain position P00 + K_b'. The time domain starting position of time slot group g1, that is, the index value P1 of time slot b', is equal to the reference time domain position P00 + K_b.

[0277] As shown in Figure 26, multiple time slot groups are time slot group g1, time slot group g2, and time slot group g3. Each time slot group can include four time slots. Time slot b in time slot group g1 is used to carry SCI1. SCI1 includes indication field A and indication field B. Indication field B has two indication modes, which are described below.

[0278] The indication field A indicates that the time slot group g1 includes 4 time slots. In other implementations, the indication field A may also be used to indicate the number of time slots included in the time slot group g2.

[0279] Indicator field B indicates mode 1, indicating the time domain starting position of time slot group g1, the time domain starting position of time slot group g2, and the time domain starting position of time slot group g3. The time domain starting position of time slot group g2 and the time domain starting position of time slot group g3 can be determined based on the time domain position of time slot b in time slot group g1. In this case, time slot b in time slot group g1 serves as a reference point for determining the time domain starting position of time slot group g2 and the time domain starting position of time slot group g3.

[0280] Accordingly, SCI1 can indicate the time domain offset value K of the starting position of time slot group g2 relative to time slot b. If time slot b is the first time slot of time slot group g1, the corresponding time slot offset value K can be K1. If time slot b is the time slot of time slot group g1 in which SCI1 is transmitted, the corresponding time slot offset value K can be K2. If time slot b is the last time slot of time slot group g1, the corresponding time slot offset value K can be K3.

[0281] At this time, the time domain starting position of the time slot group g2, that is, the index value P1 of the time slot b'=the index P0 of the time slot b in the time slot group g1+K.

[0282] It should be noted that when the index P0 of time slot b is 0, K is the index value of time slot b'.

[0283] Accordingly, SCI1 can indicate the time domain starting position of time slot group g3 relative to the time slot b, and the time slot offset value K' can be K4 if time slot b is the first time slot of time slot group g1. If time slot b is the time slot of time slot group g1 in which SCI1 is transmitted, the corresponding time slot offset value K' can be K5. If time slot b is the last time slot of time slot group g1, the corresponding time slot offset value K' can be K6.

[0284] At this time, the time domain starting position of the time slot group g2, that is, the index value P1 of the time slot b'=the index P0 of the time slot b in the time slot group g1+K.

[0285] It should be noted that when the index P0 of time slot b is 0, K' is the index value of time slot b'.

[0286] Indicator field B indicates mode 2, indicating the reference time domain position P00, the time slot offset value K_b, and the time slot offset value K_b'. The time slot offset value K_b is the offset value between the reference time domain position and the time domain starting position of time slot group g1. The time slot offset value K_b' is the offset value between the reference time domain position and the time domain starting position of time slot group g2.

[0287] At this time, the time domain starting position of time slot group g2, that is, the index value P1 of time slot b', is equal to the reference time domain position P00 + K_b'. The time domain starting position of time slot group g1, that is, the index value P1 of time slot b', is equal to the reference time domain position P00 + K_b.

[0288] As shown in Figure 27, multiple time slot groups are time slot group g1, time slot group g2, and time slot group g3, and the three time slot groups are discontinuous in the time domain. Each time slot group may include four time slots, and time slot 2 in time slot group g1 is used to carry SCI1. In this case, SCI1 may include the time domain starting position of each time slot group g2 and time slot group g3. Time slot group g2 and time slot group g3 include the number of consecutive time slots and the number of untransmitted time slots in time slot group g1.

[0289] Correspondingly, the indication field Y1 indicates that the number of untransmitted time slots in the time slot group g1 is 2 (excluding time slot 2), or indicates that the number of untransmitted time slots in the time slot group g1 is 3 (including time slot 2).

[0290] Taking the distributed indication as an example, the indication field Y2 indicates the time domain starting position of the time slot group g2 and the time domain starting position of the time slot group g3. The indication field Y3 indicates the number of time slots included in the time slot group 2 and the number of time slots included in the time slot group 3.

[0291] Taking the joint indication as an example, indication field Y4 indicates the starting time domain position of time slot group 2, the time slot format included in time slot group 2, the starting time domain position of time slot group 3, and the number of time slots included in time slot group 3.

[0292] As shown in Figure 28, multiple time slot groups are time slot group g1, time slot group g2, and time slot group g3, and the three time slot groups are discontinuous in the time domain. Time slot group g1 may include four time slots, and time slot group g2 and time slot group g3 each include one time slot. Time slot 2 in time slot group g1 is used to carry SCI1. In this case, SCI1 may include the time domain starting position of time slot group g2 and the time domain starting position of time slot group g3, as well as the number of untransmitted time slots in time slot group g1.

[0293] Correspondingly, the indication field Y5 indicates the time domain starting position of time slot group 2, the time domain starting position of time slot group 3, and indicates that the number of untransmitted time slots in time slot group g1 is 2.

[0294] As shown in FIG29 , a plurality of consecutive time slots include time slots 1 to 6, and SCI1 is transmitted in time slot 2. Accordingly, the indicator field Y1 of SCI1 indicates that the number of untransmitted time slots in the plurality of time slots is 5 when the untransmitted time slots include time slot 2. If the transmitted time slots include time slot 2, the indicator field Y1 indicates that the number of untransmitted time slots in the plurality of time slots is 6.

[0295] The following describes the first control information of an embodiment of the present application in combination with various frequency domain distribution modes of time slot groups.

[0296] Assume that the frequency domain resources contained in multiple time slot groups are different, the frequency domain resources contained in the time slots of each time slot group are different, and multiple time slot groups are used to transmit the same TB. Referring to Figure 30, the number of time slots contained in time slot group g1, time slot group g2, and time slot group g3 is 4. The frequency domain resources contained in any two time slot groups among time slot group g1, time slot group g2, and time slot group g3 are different. In addition, the frequency domain resources contained in each time slot in time slot group g1 are different, the frequency domain resources contained in each time slot in time slot group g2 are different, the frequency domain resources contained in each time slot in time slot group g3 are different, and SCI1 occupies time slot 2 in time slot group g1 for transmission.

[0297] Accordingly, SCI1 includes an indication field F1 and an indication field F2. The information in indication field F1 is used to indicate the frequency domain starting position of the frequency domain resources contained in time slot 3 in time slot group g1, the frequency domain starting position of the frequency domain resources contained in time slot 4, the frequency domain resource length of the frequency domain resources contained in time slot 3, and the frequency domain resource length of the frequency domain resources contained in time slot 4. The information in indication field F2 is used to indicate the frequency domain starting position and frequency domain resource length of the frequency domain resources contained in each time slot in time slot group g2. The information in indication field F2 is also used to indicate the frequency domain starting position and frequency domain resource length of the frequency domain resources contained in each time slot in time slot group g3.

[0298] It should be noted that the indication field F1 and the indication field F2 may be the same indication field. Of course, the indication field F1 and the indication field F2 may also be different indication fields, which is not limited in the embodiment of the present application.

[0299] Assume that the same numbered time slots within multiple time slot groups contain the same frequency domain resources. Referring to Figure 22 , time slot groups g1, g2, and g3 each contain four time slots, numbered 1 through 4. The same numbered time slots within time slot groups g1, g2, and g3 contain the same frequency domain resources.

[0300] That is, the first time slot (i.e., Slot 1) of time slot groups g1, g2, and g3 contains the same frequency domain resources; the second time slot (i.e., Slot 2) of time slot groups g1, g2, and g3 contains the same frequency domain resources; the third time slot (i.e., Slot 3) of time slot groups g1, g2, and g3 contains the same frequency domain resources; and the fourth time slot (i.e., Slot 4) of time slot groups g1, g2, and g3 contains the same frequency domain resources. Furthermore, SCIs 1 to SCI 3 are carried in Slot 2, Slot 3, and Slot 1 of time slot groups g1, g2, and g3, respectively.

[0301] Accordingly, information field F3 included in SCI1 indicates the frequency domain starting position and length of the frequency domain resources in time slots 1 to 4 within time slot group 1. Information field F3 included in SCI2 indicates the frequency domain starting position and length of the frequency domain resources in time slots 1 to 4 within time slot group 2. Information field F3 included in SCI3 indicates the frequency domain starting position and length of the frequency domain resources in time slots 1 to 4 within time slot group 3.

[0302] It should be noted that when the time slot group g1, the time slot group g2, and the time slot group g3 are continuous, they can be regarded as one time slot group and the indication method described above can also be used.

[0303] In addition, when different time slot groups contain different numbers of time slots, the same indication method described above is also used. For example, time slot group g1 contains 4 time slots, while time slot group g2 contains only 3 time slots. In this case, the frequency domain resources contained in the first three time slots of time slot group g1 can be consistent with the frequency domain resource positions of the first three time slots of time slot group g1.

[0304] Assume that the frequency domain resources included in multiple time slot groups differ, but the frequency domain resources included in the time slots within each time slot group are the same. Referring to Figure 21, time slot group g1, time slot group g2, and time slot group g3 each contain four time slots. Time slots 1 through 4 within time slot group g1 contain the same frequency domain resources, time slots 1 through 4 within time slot group g2 contain the same frequency domain resources, and time slots 1 through 4 within time slot group g3 contain the same frequency domain resources. The frequency domain resources included in time slot group g1, time slot group g2, and time slot group g3 differ.

[0305] In some implementations, the frequency domain starting positions of the frequency domain resources included in time slot group g1, time slot group g2, and time slot group g3 are different, and the frequency domain resource lengths of the frequency domain resources included in time slot group g1, time slot group g2, and time slot group g3 can be the same or different. Generally, if time slot group g1, time slot group g2, and time slot group g3 are used to transmit the same TB, then the frequency domain resource lengths of the frequency domain resources included in time slot group g1, time slot group g2, and time slot group g3 can be the same. Conversely, if time slot group g1, time slot group g2, and time slot group g3 are used to transmit different TBs, then the frequency domain resource lengths of the frequency domain resources included in time slot group g1, time slot group g2, and time slot group g3 are different.

[0306] Accordingly, SCI1 can be transmitted in the second time slot 2 of time slot group g1. SCI1 includes an indication field F4 and an indication field F5. The information in indication field F4 indicates the frequency domain starting position and frequency domain resource length of the frequency domain resources included in each time slot of time slot group g1. The information in indication field F5 is used to indicate the frequency domain resource starting position and frequency domain resource length of the frequency domain resources included in time slot group g2. The information in indication field F5 is also used to indicate the frequency domain resource starting position and frequency domain resource length of the frequency domain resources included in time slot group g3.

[0307] It should be noted that, in the embodiment of the present application, the indication field F4 and the indication field F5 may be the same indication field. Of course, the indication field F4 and the indication field F5 may be different indication fields.

[0308] In addition, when the time slot group g1, the time slot group g2 and the time slot group g3 are continuous in the time domain, the time slot group g1, the time slot group g2 and the time slot group g3 can be regarded as one time slot group, and the above indication method is also applicable.

[0309] Assume that the frequency domain resources included in multiple time slot groups are identical, and that the frequency domain resources included in the time slots in each time slot group are identical. Referring to Figure 20 , time slot group g1, time slot group g2, and time slot group g3 each contain four time slots, and the frequency domain resources included in the time slots in time slot groups g1 through g3 are identical.

[0310] Correspondingly, SCI1 is carried in the second time slot (time slot 2) in time slot group g1. SCI1 includes an indication field F6. Information in indication field F6 is used to indicate the frequency domain starting position and frequency domain resource length of the frequency domain resources of time slot group g1.

[0311] It should be noted that the above-mentioned indication field F6 can cooperate with the resource reservation indication, that is, the frequency domain resources in the time slot reserved by the resource reservation indication can be determined by the indication field F6.

[0312] Assume there is only one time slot group, and the frequency domain resources contained in the time slots within the time slot group are different. Referring to Figure 19 , time slot group g1 contains four time slots, and the frequency domain resources contained in different time slots within time slot group g1 are different. Furthermore, the first time slot (time slot 2) of time slot group g1 is used to transmit SCI1, which contains the indicator field F1.

[0313] The information in the indication field F1 may be used to indicate the frequency domain starting position and the frequency domain resource length of the frequency domain resources included in time slots 2 to 4 in the time slot group g1.

[0314] Assume there is only one time slot group, and the time slots in this time slot group contain the same frequency domain resources. Referring to Figure 18 , time slot group g1 contains four time slots, and the frequency domain resources contained in different time slots in time slot group g1 are identical. Furthermore, the first time slot (time slot 2) in time slot group g1 is used to transmit SCI1, which contains an indicator field F1.

[0315] The information in the indication field F1 may be used to indicate the frequency domain starting position and the frequency domain resource length of the frequency domain resources included in time slots 2 to 4 in the time slot group g1.

[0316] The above describes a solution in which the first information includes resource information in an embodiment of the present application. The following describes a solution in which the first information includes transmission block information in an embodiment of the present application.

[0317] Embodiment 2: The first information includes transport block information.

[0318] The transport block information may include a mapping between time slots and transport blocks within one or more time slot groups. For a single time slot group, the mapping indicates the time slots within that time slot group on which the transport block is transmitted. For multiple time slot groups, the mapping indicates the time slots within which the transport block is transmitted.

[0319] In the embodiment of the present application, the above-mentioned mapping relationship can be indicated by a bitmap. Of course, the above-mentioned mapping relationship can also be indicated by encoding, which is not limited in the embodiment of the present application.

[0320] Taking the mapping relationship indicated by a bitmap as an example, assuming that the time slot group includes 4 time slots: time slot 1, time slot 2, time slot 3 and time slot 4, each time slot can correspond to a bit. When the bit map corresponding to TB1 is 1101, as shown in (a) in Figure 31, it can be indicated that time slot 1, time slot 2 and time slot 4 in time slot group g1 are used to send TB1, and time slot 3 is not used to send TB1.

[0321] Assume that time slot group g1 includes 4 time slots: time slot 1, time slot 2, time slot 3 and time slot 4, each time slot can correspond to a bit. When the bit diagram corresponding to TB3 is 1111, refer to (b) in Figure 31, it can be indicated that time slots 1 to time slots 4 in time slot group g1 are used to send TB3.

[0322] In some implementations, the time slots within the same time slot group in one or more time slot groups are mapped to the same transport block. That is, the time slots within the same time slot group can be used to transmit the same transport block. Continuing with FIG. 31( b ), for time slot group 2, the time slots within the time slot group are used to transmit the same transport block TB3. In this case, the time slots within time slot group 2 are used to transmit the same transport block. In other implementations, the time slots within the same time slot group can be used to transmit different transport blocks. Continuing with FIG. 31( a ), for time slot group 1, time slot 1, time slot 2, and time slot 4 within the time slot group are used to transmit the same transport block TB1. Time slot 3 is used to transmit TB2. In this case, the time slots within time slot group 1 are used to transmit different transport blocks.

[0323] Currently, based on the advantages of multi-slot continuous transmission, the introduction of multi-slot continuous transmission in the unlicensed frequency domain is under discussion. However, how to transmit data on multi-slot continuous transmission is not specified yet.

[0324] Therefore, an embodiment of the present application further provides a method for wireless communication. The method of the embodiment of the present application is described below in conjunction with FIG32. The method shown in FIG32 includes: step S3210.

[0325] Step S3210: The first device uses a first time slot group to perform continuous time slot transmission, and multiple time slots in the first time slot group are used to transmit one transport block.

[0326] In some implementations, the multiple time slots are partial time slots in the first time slot group. In this case, other transport blocks can be transmitted on the remaining time slots in the first time slot group. Continuing with FIG. 31( a ), for time slot group 1, time slots 1, 2, and 4 within this time slot group are used to transmit the same transport block TB1. Time slot 3 is used to transmit TB2; in this case, TB1 is transmitted on a portion of the time slots within time slot group 1. Of course, in this embodiment of the present application, the multiple time slots may also be all the time slots in the first time slot group.

[0327] In some implementations, the time domain positions of multiple time slots in the first time slot group are discontinuous. Continuing with FIG. 31( a ), for time slot group 1, time slots 1, 2, and 4 within the time slot group are used to transmit the same transport block TB1. In this case, time slots 1 and 2 are each discontinuous with time slot 4 in the time domain. Of course, in embodiments of the present application, the time domain positions of multiple time slots may also be continuous.

[0328] The method embodiment of the present application is described in detail above in conjunction with Figures 1 to 32. The device embodiment of the present application is described in detail below in conjunction with Figures 33 to 35. It should be understood that the description of the method embodiment corresponds to the description of the device embodiment. Therefore, for parts not described in detail, reference can be made to the above method embodiment.

[0329] FIG33 is a schematic diagram of a first device according to an embodiment of the present application. The first device 3300 shown in FIG33 includes: a communication unit 3310.

[0330] Communication unit 3310 is used to send or receive first control information in a first time slot, where the first control information includes first information, and the first information is associated with one or more time slot groups; wherein the one or more time slot groups are used for continuous time slot transmission on an unlicensed spectrum, and the one or more time slot groups include the first time slot group where the first time slot is located and / or one or more second time slot groups, where the one or more second time slot groups are located after the first time slot group in the time domain and are associated with the first time slot group.

[0331] As a possible implementation manner, the first information is used to indicate one or more of the following: resource information of the one or more time slot groups; and transmission block information of the one or more time slot groups.

[0332] As a possible implementation method, the resource information of the one or more time slot groups includes one or more of the following: the number of time slots included in the one or more time slot groups; the length of frequency domain resources included in the one or more time slot groups; the time domain position of the one or more time slot groups; the frequency domain position of the one or more time slot groups; the time domain position of the first time slot in the first time slot group; the number of untransmitted time slots in the first time slot group; the frequency domain position within the untransmitted time slots in the first time slot group; the length of frequency domain resources within the untransmitted time slots in the first time slot group.

[0333] As a possible implementation method, the first control information includes a first indication field and a second indication field, the first indication field is used to indicate the number of time slots included in the one or more time slot groups, and the second indication field is used to indicate the time domain position of the one or more time slot groups.

[0334] As a possible implementation method, the first control information includes a third indication field, and the third indication field is used to indicate one or more of the following: the number of time slots contained in the one or more time slot groups; the time domain position of the one or more time slot groups; and the interval between two time slot groups in the one or more time slot groups.

[0335] As a possible implementation method, the time domain position of the one or more time slot groups includes the time domain position of the second time slot group, and the time domain position of the second time slot group is determined based on one or more of the following parameters: a reference time domain position; a time slot offset between the reference time domain position and the time domain position of the second time slot group.

[0336] As a possible implementation manner, the time domain position of the second time slot group includes a time domain start position of the second time slot group and / or a time domain end position of the second time slot group.

[0337] As a possible implementation method, the reference time domain position includes one or more of the following: a common time domain position; the time domain position of the first time slot in the first time slot group; the time domain position of the last time slot in the first time slot group; and the time slot position of the first time slot.

[0338] As a possible implementation manner, the reference time domain position is configured through one or more of the following manners: configured through the first control information; pre-configured; and / or indicated through high-layer signaling.

[0339] As a possible implementation method, the first control information includes a fourth indication field and a fifth indication field, the fourth indication field is used to indicate the frequency domain resource length contained in the one or more time slot groups, and the fifth indication field is used to indicate the frequency domain position of the one or more time slot groups.

[0340] As a possible implementation, the first control information includes a sixth indication field, and the sixth indication field is used to indicate one or more of the following: the length of the frequency domain resources contained in the one or more time slot groups; the frequency domain position of the one or more time slot groups.

[0341] As a possible implementation method, the frequency domain positions of the one or more time slot groups include the frequency domain position of the second time slot group, and the frequency domain position of the second time slot group is determined based on one or more of the following parameters: a reference frequency domain position; a frequency domain resource offset between the reference frequency domain position and the frequency domain position of the second time slot group.

[0342] As a possible implementation manner, the frequency domain position of the second time slot group includes a frequency domain starting position of the second time slot group and / or a frequency domain ending position of the second time slot group.

[0343] As a possible implementation manner, the transport block information of the one or more time slot groups includes a mapping relationship between time slots and transport blocks in the one or more time slot groups.

[0344] As a possible implementation manner, time slots in the same time slot group of the one or more time slot groups are mapped to the same or different transport blocks.

[0345] As a possible implementation method, the first control information is control information of the second format among multiple formats of control information, and the multiple formats of control information also include control information of the first format, wherein the control information of the first format corresponds to single time slot transmission, and the control information of the second format corresponds to continuous time slot transmission.

[0346] As a possible implementation manner, the control information in the second format includes an indication field indicating the second format; or, the control information in the second format and the control information in the first format use different scrambling methods.

[0347] As a possible implementation manner, the continuous time slot transmission and the single time slot transmission both correspond to the control information in the first format.

[0348] As a possible implementation method, if the control information in the first format is used for continuous time slot transmission, the control information in the first format includes an indication field for indicating the number of continuous time slots; and / or if the control information in the first format is used for single time slot transmission, the control information in the first format does not include an indication field for indicating the number of continuous time slots.

[0349] As a possible implementation method, the frequency domain resources within the one or more time slot groups meet one of the following conditions: the frequency domain resources included in each time slot in the one time slot group are the same; the frequency domain resources included in the multiple time slot groups are the same; the frequency domain resources in each time slot in the one time slot group are different; the frequency domain resources included in two time slot groups in the multiple time slot groups are different; the frequency domain resources included in different time slot groups in the multiple time slot groups are different, and the frequency domain resources included in each time slot group in the multiple time slot groups are the same; the frequency domain resources in corresponding time slots between the multiple time slot groups are the same.

[0350] As a possible implementation manner, the corresponding time slots between the multiple time slot groups are time slots at the same position in each time slot group in the multiple time slot groups.

[0351] As a possible implementation manner, two adjacent time slot groups among the multiple time slot groups are discontinuous in the time domain; or two adjacent time slot groups among the multiple time slot groups are continuous in the time domain.

[0352] Figure 34 is a schematic diagram of a first device according to another embodiment of the present application. The first device 3400 shown in Figure 34 includes: a processing unit 3410.

[0353] The processing unit 3420 is configured to perform continuous time slot transmission using a first time slot group, where a plurality of time slots in the first time slot group are used to transmit one transport block.

[0354] As a possible implementation manner, the multiple time slots are part of the time slots in the first time slot group.

[0355] As a possible implementation manner, the time domain positions of the multiple time slots in the first time slot group are discontinuous.

[0356] In an optional embodiment, the communication unit 3310 may be a transceiver 3530. The first device 3300 may further include a processor 3510 and a memory 3520, as specifically shown in FIG35 .

[0357] In an optional embodiment, the processing unit 3410 may be a processor 3510. The first device 3400 may further include a transceiver 3530 and a memory 3520, as specifically shown in FIG35 .

[0358] Figure 35 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 35 indicate that the unit or module is optional. The device 3500 may be used to implement the method described in the above method embodiment. The device 3500 may be a chip, a terminal device, or a network device.

[0359] The device 3500 may include one or more processors 3510. The processor 3510 may support the device 3500 to implement the method described in the method embodiment above. The processor 3510 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0360] The apparatus 3500 may further include one or more memories 3520. The memories 3520 store programs that can be executed by the processor 3510, causing the processor 3510 to perform the methods described in the above method embodiments. The memories 3520 may be independent of the processor 3510 or integrated into the processor 3510.

[0361] The apparatus 3500 may further include a transceiver 3530. The processor 3510 may communicate with other devices or chips via the transceiver 3530. For example, the processor 3510 may transmit and receive data with other devices or chips via the transceiver 3530.

[0362] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0363] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0364] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0365] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0366] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0367] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0368] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0369] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0370] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0371] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0372] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0373] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0374] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0375] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0376] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0377] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The first device sends or receives first control information in a first time slot, where the first control information includes first information, and the first information is associated with one or more time slot groups; The one or more time slot groups are used for continuous time slot transmission on an unlicensed spectrum, and the one or more time slot groups include a first time slot group where the first time slot is located and / or one or more second time slot groups, and the one or more second time slot groups are located after the first time slot group in the time domain and are associated with the first time slot group.

2. The method according to claim 1, characterized in that The first information is used to indicate one or more of the following: resource information of the one or more time slot groups; Transport block information for the one or more time slot groups.

3. The method according to claim 2, characterized in that The resource information of the one or more time slot groups includes one or more of the following: the number of time slots included in the one or more time slot groups; The length of frequency domain resources included in the one or more time slot groups; The time domain location of the one or more time slot groups; frequency domain locations of the one or more time slot groups; a time domain position of the first time slot in the first time slot group; the number of untransmitted time slots in the first group of time slots; a frequency domain position within an untransmitted time slot in the first group of time slots; The length of frequency domain resources in the untransmitted time slots in the first time slot group.

4. The method according to claim 3, characterized in that The first control information includes a first indication field and a second indication field, the first indication field is used to indicate the number of time slots included in the one or more time slot groups, and the second indication field is used to indicate the time domain position of the one or more time slot groups.

5. The method according to claim 3, characterized in that The first control information includes a third indication field, where the third indication field is used to indicate one or more of the following: the number of time slots included in the one or more time slot groups; The time domain location of the one or more time slot groups; A gap between two of the one or more groups of time slots.

6. The method according to claim 4 or 5, characterized in that The time domain positions of the one or more time slot groups include the time domain position of the second time slot group, where the time domain position of the second time slot group is determined based on one or more of the following parameters: Reference time domain position; A time slot offset between the reference time domain position and the time domain position of the second time slot group.

7. The method according to claim 6, characterized in that The time domain position of the second time slot group includes a time domain start position of the second time slot group and / or a time domain end position of the second time slot group.

8. The method according to claim 6 or 7, characterized in that The reference time domain position includes one or more of the following: Public temporal location; a time domain position of a first time slot in the first time slot group; a time domain position of the last time slot in the first time slot group; The time slot position of the first time slot.

9. The method according to claim 8, characterized in that The reference time domain position is configured in one or more of the following ways: configured through the first control information; pre-configured; and / or indicated through high-layer signaling.

10. The method according to claim 3, characterized in that The first control information includes a fourth indication field and a fifth indication field, the fourth indication field is used to indicate the frequency domain resource length included in the one or more time slot groups, and the fifth indication field is used to indicate the frequency domain position of the one or more time slot groups.

11. The method according to claim 3, characterized in that The first control information includes a sixth indication field, where the sixth indication field is used to indicate one or more of the following: The length of frequency domain resources included in the one or more time slot groups; The frequency domain positions of the one or more time slot groups.

12. The method according to claim 10 or 11, characterized in that The frequency domain positions of the one or more time slot groups include the frequency domain position of the second time slot group, and the frequency domain position of the second time slot group is determined based on one or more of the following parameters: Reference frequency domain position; A frequency domain resource offset between the reference frequency domain position and the frequency domain position of the second time slot group.

13. The method according to claim 12, characterized in that The frequency domain position of the second time slot group includes a frequency domain starting position of the second time slot group and / or a frequency domain ending position of the second time slot group.

14. The method according to any one of claims 2 to 13, characterized in that The transport block information of the one or more time slot groups includes a mapping relationship between time slots and transport blocks within the one or more time slot groups.

15. The method according to claim 14, characterized in that Time slots within the same time slot group of the one or more time slot groups are mapped to the same or different transport blocks.

16. The method according to any one of claims 1 to 15, characterized in that The first control information is control information in a second format among control information in multiple formats, and the control information in multiple formats also includes control information in a first format, wherein the control information in the first format corresponds to single time slot transmission, and the control information in the second format corresponds to continuous time slot transmission.

17. The method according to claim 16, characterized in that The control information in the second format includes an indication field indicating the second format; or, The control information in the second format and the control information in the first format use different scrambling methods.

18. The method according to any one of claims 1 to 17, characterized in that The continuous time slot transmission and the single time slot transmission both correspond to control information in the first format.

19. The method according to claim 18, characterized in that If the control information in the first format is used for transmission in consecutive time slots, the control information in the first format includes an indication field for indicating the number of consecutive time slots; and / or If the control information in the first format is used for single time slot transmission, the control information in the first format does not include an indication field for indicating the number of consecutive time slots.

20. The method according to any one of claims 1 to 19, characterized in that The frequency domain resources within the one or more time slot groups meet one of the following conditions: The frequency domain resources included in each time slot in the time slot group are the same; The frequency domain resources included in the multiple time slot groups are the same; The frequency domain resources in each time slot in the time slot group are different; Two time slot groups among the multiple time slot groups include different frequency domain resources; Different time slot groups in the multiple time slot groups include different frequency domain resources, and the frequency domain resources included in each time slot group in the multiple time slot groups are the same; The frequency domain resources in the time slots corresponding to the multiple time slot groups are the same.

21. The method according to claim 20, characterized in that The corresponding time slots between the multiple time slot groups are time slots at the same position in each time slot group in the multiple time slot groups.

22. The method according to any one of claims 1 to 21, characterized in that Two adjacent time slot groups among the multiple time slot groups are not continuous in the time domain; or Two adjacent time slot groups among the multiple time slot groups are continuous in the time domain.

23. A wireless communication method, characterized in that: include: The first device uses a first time slot group to perform continuous time slot transmission, where a plurality of time slots in the first time slot group are used to transmit a transmission block.

24. The method according to claim 23, wherein The multiple time slots are part of the time slots in the first time slot group.

25. The method according to claim 23 or 24, characterized in that The time domain positions of the multiple time slots in the first time slot group are discontinuous.

26. A first device, characterized in that: include: a communication unit, configured to send or receive first control information in a first time slot, wherein the first control information includes first information, and the first information is associated with one or more time slot groups; The one or more time slot groups are used for continuous time slot transmission on an unlicensed spectrum, and the one or more time slot groups include a first time slot group where the first time slot is located and / or one or more second time slot groups, and the one or more second time slot groups are located after the first time slot group in the time domain and are associated with the first time slot group.

27. The first device according to claim 26, characterized in that The first information is used to indicate one or more of the following: resource information of the one or more time slot groups; Transport block information for the one or more time slot groups.

28. The first device according to claim 27, characterized in that The resource information of the one or more time slot groups includes one or more of the following: the number of time slots included in the one or more time slot groups; The length of frequency domain resources included in the one or more time slot groups; The time domain location of the one or more time slot groups; frequency domain locations of the one or more time slot groups; a time domain position of the first time slot in the first time slot group; the number of untransmitted time slots in the first group of time slots; a frequency domain position within an untransmitted time slot in the first group of time slots; The length of frequency domain resources in the untransmitted time slots in the first time slot group.

29. The first device according to claim 28, characterized in that The first control information includes a first indication field and a second indication field, the first indication field is used to indicate the number of time slots included in the one or more time slot groups, and the second indication field is used to indicate the time domain position of the one or more time slot groups.

30. The first device according to claim 28, characterized in that The first control information includes a third indication field, where the third indication field is used to indicate one or more of the following: the number of time slots included in the one or more time slot groups; The time domain location of the one or more time slot groups; A gap between two of the one or more groups of time slots.

31. The first device according to claim 29 or 30, characterized in that The time domain positions of the one or more time slot groups include the time domain position of the second time slot group, where the time domain position of the second time slot group is determined based on one or more of the following parameters: Reference time domain position; A time slot offset between the reference time domain position and the time domain position of the second time slot group.

32. The first device according to claim 31, characterized in that The time domain position of the second time slot group includes a time domain start position of the second time slot group and / or a time domain end position of the second time slot group.

33. The first device according to claim 31 or 32, characterized in that The reference time domain position includes one or more of the following: Public temporal location; a time domain position of a first time slot in the first time slot group; a time domain position of the last time slot in the first time slot group; The time slot position of the first time slot.

34. The first device according to claim 33, characterized in that The reference time domain position is configured in one or more of the following ways: configured through the first control information; pre-configured; and / or indicated through high-layer signaling.

35. The first device according to claim 28, characterized in that The first control information includes a fourth indication field and a fifth indication field, the fourth indication field is used to indicate the frequency domain resource length included in the one or more time slot groups, and the fifth indication field is used to indicate the frequency domain position of the one or more time slot groups.

36. The first device according to claim 28, characterized in that The first control information includes a sixth indication field, where the sixth indication field is used to indicate one or more of the following: The length of frequency domain resources included in the one or more time slot groups; The frequency domain positions of the one or more time slot groups.

37. The first device according to claim 35 or 36, characterized in that The frequency domain positions of the one or more time slot groups include the frequency domain position of the second time slot group, and the frequency domain position of the second time slot group is determined based on one or more of the following parameters: Reference frequency domain position; A frequency domain resource offset between the reference frequency domain position and the frequency domain position of the second time slot group.

38. The first device according to claim 37, characterized in that The frequency domain position of the second time slot group includes a frequency domain starting position of the second time slot group and / or a frequency domain ending position of the second time slot group.

39. The first device according to any one of claims 27-38, characterized in that The transport block information of the one or more time slot groups includes a mapping relationship between time slots and transport blocks within the one or more time slot groups.

40. The first device according to claim 39, characterized in that Time slots within the same time slot group of the one or more time slot groups are mapped to the same or different transport blocks.

41. The first device according to any one of claims 26 to 40, characterized in that The first control information is control information in a second format among control information in multiple formats, and the control information in multiple formats also includes control information in a first format, wherein the control information in the first format corresponds to single time slot transmission, and the control information in the second format corresponds to continuous time slot transmission.

42. The first device according to claim 41, characterized in that The control information in the second format includes an indication field indicating the second format; or, The control information in the second format and the control information in the first format use different scrambling methods.

43. The first device according to any one of claims 26 to 42, characterized in that The continuous time slot transmission and the single time slot transmission both correspond to control information in the first format.

44. The first device according to claim 43, characterized in that If the control information in the first format is used for transmission in consecutive time slots, the control information in the first format includes an indication field for indicating the number of consecutive time slots; and / or If the control information in the first format is used for single time slot transmission, the control information in the first format does not include an indication field for indicating the number of consecutive time slots.

45. The first device according to any one of claims 26 to 44, characterized in that The frequency domain resources within the one or more time slot groups meet one of the following conditions: The frequency domain resources included in each time slot in the time slot group are the same; The frequency domain resources included in the multiple time slot groups are the same; The frequency domain resources in each time slot in the time slot group are different; Two time slot groups among the multiple time slot groups include different frequency domain resources; Different time slot groups in the multiple time slot groups include different frequency domain resources, and the frequency domain resources included in each time slot group in the multiple time slot groups are the same; The frequency domain resources in the time slots corresponding to the multiple time slot groups are the same.

46. ​​The first device according to claim 45, characterized in that The corresponding time slots between the multiple time slot groups are time slots at the same position in each time slot group in the multiple time slot groups.

47. The first device according to any one of claims 26 to 46, characterized in that Two adjacent time slot groups among the multiple time slot groups are not continuous in the time domain; or Two adjacent time slot groups among the multiple time slot groups are continuous in the time domain.

48. A first device, characterized in that include: The processing unit is configured to perform continuous time slot transmission using a first time slot group, where a plurality of time slots in the first time slot group are used to transmit a transmission block.

49. The first device according to claim 48, characterized in that The multiple time slots are part of the time slots in the first time slot group.

50. The first device according to claim 49 or 50, characterized in that The time domain positions of the multiple time slots in the first time slot group are discontinuous.

51. A terminal device, characterized in that: The terminal comprises a transceiver, a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory and control the transceiver to receive or send a signal, so that the terminal executes the method according to any one of claims 1 to 25.

52. A device, characterized in that The device comprises a processor configured to call a program from a memory so as to enable the device to execute the method according to any one of claims 1 to 25.

53. A chip, characterized in that: The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 25.

54. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 25.

55. A computer program product, characterized in that The method comprises a program for causing a computer to execute the method according to any one of claims 1 to 25.

56. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 25.

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