Resource indication method and apparatus, and device and storage medium

Abstract

A resource indication method and apparatus, and a device and a storage medium, relating to the technical field of communications. The method comprises: a first terminal device determining a first transmission resource (910); the first terminal device sending sidelink control information to indicate the first transmission resource (920); and the first terminal device performing uplink transmission on the basis of the first transmission resource (930). When a first terminal device uses a first transmission resource to perform uplink transmission, the method can prevent other terminal devices from also selecting the same first transmission resource for sidelink transmission, thus avoiding the interference problem between UL and SL transmissions. Therefore, in a scenario supporting dynamic spectrum sharing between a UL and an SL, a resource conflict is avoided, dynamic coexistence between the UL and the SL is achieved, and the spectrum utilization efficiency is improved.

Description

Resource indication method, apparatus, device, and storage medium TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of communication, and particularly relate to a resource indication method, apparatus, device, and storage medium. BACKGROUND

[0002] SL (Sidelink, sidelink) communication refers to communication between terminal devices through a direct communication interface.

[0003] Currently, a communication system supports semi-static sharing of a frequency spectrum by configuring resource pools for UL (Uplink, uplink) and SL. With the evolution of technology, the manner in which UL and SL share a frequency spectrum needs further research.

[0004] SUMMARY

[0005] Embodiments of the present application provide a resource indication method, apparatus, device, and storage medium. The technical solutions provided by embodiments of the present application are as follows.

[0006] According to an aspect of an embodiment of the present application, a resource indication method is provided, the method being performed by a first terminal device, and the method comprising:

[0007] determining a first transmission resource;

[0008] sending sidelink control information indicating the first transmission resource;

[0009] performing uplink transmission based on the first transmission resource.

[0010] According to an aspect of an embodiment of the present application, a resource indication method is provided, the method being performed by a network device, and the method comprising:

[0011] sending first signaling, the first signaling being used to indicate one or more groups of first transmission resources, the first transmission resources being used for uplink transmission.

[0012] According to an aspect of an embodiment of the present application, a resource indication apparatus is provided, the apparatus comprising:

[0013] a processing module configured to determine a first transmission resource;

[0014] a sending module configured to send sidelink control information indicating the first transmission resource;

[0015] The sending module is further configured to perform uplink transmission based on the first transmission resource.

[0016] According to an aspect of an embodiment of the present application, a resource indication apparatus is provided, the apparatus comprising:

[0017] The sending module is configured to send first signaling, where the first signaling is used to indicate one or more groups of first transmission resources, and the first transmission resources are used for uplink transmission.

[0018] According to an aspect of some embodiments of the present application, a terminal device is provided, which comprises a processor and a memory, the memory storing a computer program, and the processor executes the computer program to implement the above-mentioned resource indication method performed by the first terminal device.

[0019] According to an aspect of some embodiments of the present application, a network device is provided, which comprises a processor and a memory, the memory storing a computer program, and the processor executes the computer program to implement the above-mentioned resource indication method performed by the network device.

[0020] According to an aspect of some embodiments of the present application, a computer readable storage medium is provided, which stores a computer program, and the computer program is used to be executed by a processor to implement the above-mentioned resource indication method.

[0021] According to an aspect of some embodiments of the present application, a chip is provided, which comprises a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the above-mentioned resource indication method.

[0022] According to an aspect of some embodiments of the present application, a computer program product is provided, which comprises computer instructions stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the above-mentioned resource indication method.

[0023] The technical solutions provided by the embodiments of the present application can include the following beneficial effects:

[0024] By determining the first transmission resources used for uplink transmission by the first terminal device, and indicating the first transmission resources to other terminal devices through sending sidelink control information, the first terminal device can avoid other terminal devices also selecting the first transmission resources for sidelink transmission, and avoid the problem of UL and SL transmission interference, thereby avoiding resource conflicts, realizing dynamic coexistence of UL and SL, and increasing spectrum utilization in the scenario of supporting dynamic spectrum sharing of UL and SL. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0026] FIG. 2 is a schematic diagram of a physical layer structure of SL communication according to an embodiment of the present application;

[0027] FIG. 3 is a schematic diagram of time-frequency resource location reservation according to an embodiment of the present application;

[0028] FIG. 4 is a schematic diagram of resource sensing and resource selection according to an embodiment of the present application;

[0029] FIG. 5 is a schematic diagram of LTE V2X physical layer structure according to an embodiment of the present application;

[0030] FIG. 6 is a schematic diagram of resource re-evaluation mechanism according to an embodiment of the present application;

[0031] FIG. 7 is a schematic diagram of resource pre-emption mechanism according to an embodiment of the present application;

[0032] FIG. 8 is a schematic diagram of resource exclusion by NR SL module based on sensing result provided by LTE SL module according to an embodiment of the present application;

[0033] FIG. 9 is a flowchart of a resource indication method according to an embodiment of the present application;

[0034] FIG. 10 is an interaction diagram between internal modules of a terminal in a UL and NR SL dynamic coexistence scenario according to an embodiment of the present application;

[0035] FIG. 11 is an interaction diagram between terminal devices in a UL and NR SL dynamic coexistence scenario according to an embodiment of the present application;

[0036] FIG. 12 is a schematic diagram of indicating a first transmission resource in a UL and NR SL dynamic coexistence scenario according to an embodiment of the present application;

[0037] FIG. 13 is an interaction diagram between internal modules of a terminal in a UL and LTE SL dynamic coexistence scenario according to an embodiment of the present application;

[0038] FIG. 14 is an interaction diagram between terminal devices in a UL and LTE SL dynamic coexistence scenario according to an embodiment of the present application;

[0039] FIG. 15 is a schematic diagram of indicating a first transmission resource in a UL and LTE SL dynamic coexistence scenario according to an embodiment of the present application;

[0040] FIG. 16 is an interaction diagram between internal modules of a terminal in a UL and NR SL and LTE SL dynamic coexistence scenario according to an embodiment of the present application;

[0041] FIG. 17 is an interaction diagram between terminal devices in a UL and NR SL and LTE SL dynamic coexistence scenario according to an embodiment of the present application;

[0042] FIG. 18 is an interaction diagram between internal modules of a terminal in an UL and NR SL and LTE SL dynamic coexistence scenario according to another embodiment of the present application;

[0043] FIG. 19 is an interaction diagram between terminal devices in an UL and NR SL and LTE SL dynamic coexistence scenario according to another embodiment of the present application;

[0044] FIG. 20 is a schematic diagram of indicating a first transmission resource in an UL and NR SL and LTE SL dynamic coexistence scenario according to another embodiment of the present application;

[0045] FIG. 21 is a block diagram of a resource indication apparatus according to an embodiment of the present application;

[0046] FIG. 22 is a block diagram of a resource indication apparatus according to another embodiment of the present application;

[0047] FIG. 23 is a structural schematic diagram of a terminal device according to an embodiment of the present application;

[0048] FIG. 24 is a structural schematic diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0050] The network architecture and service scenarios described in the embodiments of the present application are to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. It can be known by those skilled in the art that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0051] Please refer to FIG. 1, which shows a schematic diagram of a network architecture according to an embodiment of the present application. The network architecture can include a core network 11, an access network 12 and a terminal device 13.

[0052] A number of core network devices are included in the core network 11. The functions of the core network devices are mainly to provide user connection, management of users, and to complete the bearing of services, and to provide an interface to external networks as a bearing network. For example, in the core network of a 5G (5th Generation, 5th generation mobile communication technology) NR (New Radio, New Radio) system, AMF (Access and Mobility Management Function, Access and Mobility Management Function) entities, UPF (User Plane Function, User Plane Function) entities, and SMF (Session Management Function, Session Management Function) entities, and the like can be included.

[0053] A number of access network devices 14 are included in the access network 12. The access network in the 5G NR system can be referred to as the NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network). The access network device 14 is a device deployed in the access network 12 to provide wireless communication functions for the terminal device 13. The access network device 14 can include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different wireless access technologies, the names of devices with access network device functions can vary, for example, in the 5G NR system, it is referred to as gNodeB or gNB. As communication technologies evolve, the name “access network device” can change. For ease of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 13 are collectively referred to as access network devices.

[0054] The number of terminal devices 13 is usually more than one, and one or more terminal devices 13 can be distributed in the cell managed by each access network device 14. The terminal device 13 can include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to wireless modems with wireless communication functions, as well as various forms of user equipment (User Equipment, UE for short), mobile stations (Mobile Station, MS), and the like. For ease of description, the above-mentioned devices are collectively referred to as terminal devices. The access network device 14 and the core network device communicate with each other through some air technology, such as the NG interface in the 5G NR system. The access network device 14 and the terminal device 13 communicate with each other through some air technology, such as the Uu interface. The “terminal device” in the embodiments of the present application can also be referred to as UE, both of which express the same meaning.

[0055] The terminal device 13 and the terminal device 13 (for example, a vehicle-mounted device and other devices such as other vehicle-mounted devices, mobile phones, RSUs (Road Side Units), and the like) can communicate with each other through a direct connection communication interface (such as a PC5 interface), and accordingly, the communication link established based on the direct connection communication interface can be referred to as a direct connection link or SL. SL transmission is a direct communication data transmission between terminal devices through a sidelink, which is different from the traditional cellular system in which communication data is received or transmitted through an access network device. SL transmission has the characteristics of short delay and small overhead, and is suitable for communication between two terminal devices (such as a vehicle-mounted device and other peripheral devices close in geographical position). It should be noted that in FIG. 1, only vehicle-to-vehicle communication in a V2X (vehicle-to-everything) scenario is taken as an example, and SL technology can be applied to scenarios in which terminal devices directly communicate with each other. Or, the terminal device in this application refers to any device that communicates using SL technology.

[0056] The "5G NR system" in the embodiments of the present application can also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present application can be applied to a 5G NR system, and can also be applied to an evolved system after the 5G NR system.

[0057] Before introducing the technical solutions of the present application, some related technical knowledge involved in the present application will be introduced and explained. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following content.

[0058] 1. SL transmission

[0059] Regarding SL transmission, 3GPP defines two transmission modes: mode A and mode B.

[0060] Mode A: The transmission resource of the terminal device is allocated by the access network device (such as a base station), and the terminal device transmits communication data on the sidelink according to the transmission resource allocated by the access network device. The access network device can allocate single transmission transmission resources to the terminal device, or can allocate semi-static transmission transmission resources to the terminal device.

[0061] Mode B: The terminal device selects transmission resources in a resource pool for communication data transmission. Specifically, the terminal device can select transmission resources in the resource pool through listening, or select transmission resources in the resource pool through random selection.

[0062] Next, the SL communication in the NR V2X system and the method for terminal device to autonomously select resources (i.e., the above-mentioned Mode B) are mainly introduced.

[0063] 2. NR V2X physical layer structure

[0064] The physical layer structure of the SL communication in the NR V2X system is shown in FIG. 2. The first symbol in the slot shown in FIG. 2 is an AGC (Automatic Gain Control) symbol. When the SL UE performs reception, the received power can be adjusted in the symbol to a power suitable for demodulation. When the SL UE performs transmission, the content in the symbol one symbol after the symbol is repeatedly transmitted on the AGC symbol. In FIG. 2, the PSCCH (Physical Sidelink Control Channel) is used to carry the first sidelink control information, and the PSSCH (Physical Sidelink Shared Channel) is used to carry data and the third sidelink control information. The PSCCH and the PSSCH are transmitted in the same slot. The above-mentioned first sidelink control information and the third sidelink control information can be two sidelink control information with different functions. For example, the first sidelink control information carried in the PSCCH mainly includes a resource sensing related field, which facilitates other terminal devices to decode and perform resource exclusion and resource selection. In the PSSCH, in addition to data, the third sidelink control information is also carried, which mainly includes a data demodulation related field, which facilitates other terminal devices to demodulate the data in the PSSCH. In a certain slot, there can also be a symbol corresponding to the PSFCH (Physical Sidelink Feedback Channel), which is used to transmit HARQ feedback information. Depending on the resource pool configuration, the symbol corresponding to the PSFCH can occur once every 1, 2, or 4 slots. When there is no symbol corresponding to the PSFCH in a certain slot, for example, the GAP symbol between the PSSCH and the PSFCH in FIG. 2, the AGC for receiving the PSFCH, and the PSFCH symbol are all used to carry the PSSCH. Generally, the last symbol in the slot is a GP (Guard Period) symbol, i.e., a GAP. Or the next symbol of the last symbol carrying the PSSCH or the PSFCH is a GP symbol. The SL UE performs transceiver conversion in the GP symbol and does not perform transmission. When there is a PSFCH resource in the slot, there is also a GP symbol between the symbols of the PSSCH and the PSFCH. This is because the UE can transmit in the PSSCH and receive in the PSFCH, and also needs a GP symbol for transceiver conversion.

[0065] 3. Resource reservation in NR V2X

[0066] In the NR V2X system, under the above-mentioned mode B, the terminal device selects the transmission resource by itself to send data. The resource reservation is the premise of resource selection.

[0067] The resource reservation refers to that the terminal device sends the first side control information in the PSCCH to reserve the resources to be used next. In the NR V2X system, the resource reservation within the TB (Transport Block) is supported, and the resource reservation between the TBs is also supported.

[0068] As shown in FIG. 3, the terminal device sends the first side control information, and uses the “Time resource assignment” and “Frequency resource assignment” fields to indicate the N time-frequency resources of the current TB (including the resource used for the current transmission). Wherein N≤Nmax, and in the NR V2X, Nmax is equal to 2 or 3. At the same time, the N indicated time-frequency resources should be distributed in W slots. In the NR V2X, W is equal to 32. For example, in the TB1 shown in FIG. 3, the terminal device sends the first side control information in the PSCCH while sending the initial transmission data in the PSSCH, and uses the above two fields to indicate the time-frequency resource positions of the initial transmission and the retransmission 1 (that is, N=2 at this time), that is, to reserve the time-frequency resources of the retransmission 1. And the initial transmission and the retransmission 1 are distributed in 32 slots in the time domain. Similarly, in the TB1 shown in FIG. 3, the terminal device uses the first side control information sent in the PSCCH of the retransmission 1 to indicate the time-frequency resource positions of the retransmission 1 and the retransmission 2, and the retransmission 1 and the retransmission 2 are distributed in 32 slots in the time domain.

[0069] Meanwhile, the terminal device utilizes the "Resource reservation period" field to reserve resources between TBs when sending the first sidelink control information. For example, in FIG. 3, when sending the first sidelink control information of the initial transmission of TB1, the terminal device indicates the time-frequency resource positions of the initial transmission and the retransmission 1 of TB1 by using the "Time resource assignment" and "Frequency resource assignment" fields, denoted as {(t1, f1), (t2, f2)}. Wherein t1, t2 represent the time domain positions of the resources of the initial transmission and the retransmission 1 of TB1, and f1, f2 represent the corresponding frequency domain positions. If the value of the "Resource reservation period" field in this first sidelink control information is 100 milliseconds, then this SCI (Sidelink Control Information) also indicates the time-frequency resources {(t1+100, f1), (t2+100, f2)}, which are used for the initial transmission and the retransmission 1 of TB2. Similarly, the first sidelink control information sent in the retransmission 1 of TB1 also reserves the time-frequency resources of the retransmission 1 and the retransmission 2 of TB2 by 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, 1000 milliseconds, which are more flexible than LTE (Long Term Evaluation) V2X. However, in each resource pool, only e of the values are configured, and the terminal device determines the possible values to be used according to the resource pool used. Denote the e values in the resource pool configuration as the resource reservation period set M, and exemplarily, e is less than or equal to 16.

[0070] In addition, the above-mentioned inter-TB reservation can be activated or deactivated in units of resource pools through network configuration or pre-configuration. When the inter-TB reservation is activated, the "Resource reservation period" field is included in the first sidelink control information. When the inter-TB reservation is deactivated, the "Resource reservation period" field is not included in the first sidelink control information. When the inter-TB reservation is activated, generally, the value of the "Resource reservation period" field used by the terminal device, i.e., the resource reservation period, does not change before triggering resource reselection. The terminal device reserves the resource of the next period for the transmission of another TB by using the "Resource reservation period" field in the first sidelink control information every time the terminal device sends the first sidelink control information, thereby achieving periodic semi-persistent transmission.

[0071] When the terminal device works in the above-mentioned mode B, the terminal device can obtain the first sidelink control information sent by other terminal devices by listening to the PSCCH sent by other terminal devices, thereby knowing the resources reserved by other terminal devices. The terminal device excludes the resources reserved by other terminal devices when performing resource selection, thereby avoiding resource collision.

[0072] 4. Resource selection method for NR V2X listening

[0073] In the NR V2X system, under the above-mentioned mode B, the terminal device needs to select resources by itself.

[0074] As shown in FIG. 4, the terminal device triggers resource selection or reselection at slot n or slot n is the slot at which the higher layer triggers the physical layer to report the candidate resource set, and the resource selection window 10 starts from n+T1 and ends at n+T2. 0<=T1<=T proc,1 When the subcarrier spacing is 15, 30, 60, and 120 kHz, T proc,1 is 3, 5, 9, and 17 slots. T 2min <=T2<=the remaining latency budget of the service, T 2min The value set of T μ is {1, 5, 10, 20}*2 2min slots, where μ=0, 1, 2, 3 corresponds to the case where the subcarrier spacing is 15, 30, 60, and 120 kHz. The terminal device determines T 2min from the value set according to the priority of the data to be sent by the terminal device. For example, when the subcarrier spacing is 15 kHz, the terminal device determines T 2minT2 is equal to the remaining delay budget of the service when the remaining delay budget of the service is greater than or equal to T2. The remaining delay budget is the difference between the corresponding time of the delay requirement of the data and the current time. For example, a data packet arrives at time slot n, the delay requirement is 50 ms, and assuming that one time slot is 1 ms, if the current time is time slot n, the remaining delay budget is 50 ms, and if the current time is time slot n+20, the remaining delay budget is 30 ms.

[0075] The terminal device performs resource listening in the time slots from n-T0 to n-T proc,0 , and does not perform resource listening in the time slots from n-T proc,0 . T0 is 100 or 1100 ms. When the subcarrier spacing is 15, 30, 60, or 120 kHz, T proc,0 is 1, 1, 2, or 4 time slots. Optionally, the terminal device performs resource listening in the time slots belonging to the resource pool used by the terminal device within the resource listening window. Optionally, the terminal device listens to the first sidelink control information transmitted by other terminal devices in each time slot (except for the time slot for its own transmission). After the time slot n triggers resource selection or reselection, the terminal device uses the time slots from n-T0 to n-T proc,0 .

[0076] Step 1: The terminal device takes all available resources belonging to the resource pool used by the terminal device in the resource selection window 10 as a resource set A, and any resource in the set A is denoted as R(x, y), where x and y respectively indicate the frequency domain position and the time domain position of the resource. Let the initial number of resources in the set A be M total . The terminal device excludes the resources in the set A according to the unlistened time slots in the resource listening window 20 (Step 1-1) and / or the resource listening result in the resource listening window 20 (Step 1-2). The terminal device determines whether the resource R(x, y) or a series of periodic resources corresponding to the resource R(x, y) overlaps with the time slots determined according to the unlistened time slots in Step 1-1 or the resources determined according to the listened first sidelink control information in Step 1-2, and excludes the resource R(x, y) from the set A if there is an overlap.

[0077] Step 1-1: If the terminal device does not transmit data in the time slot t m within the resource listening window 20, the terminal device determines Q time slots at intervals of a resource reservation period allowed in the resource pool used by the terminal device according to the time slot t m . If the Q time slots overlap with the resource R(x, y) or a series of periodic resources corresponding to the resource R(x, y), the terminal device excludes the resource R(x, y) from the set A. ( represents rounding up). Tscal is equal to the value of T2 converted into milliseconds. Prx is one of the resource reservation periods allowed by the resource pool used by the terminal device. Optionally, the series of periodic resources corresponding to resource R(x, y) is R(x, y + j*Ptxlg), j = 0, 1, 2, …, Cresel-1. Where Cresel is related to the random counter value generated by the terminal device, and Ptxlg is the number of Ptx converted into logical slots. Ptx is the resource reservation period of the terminal device. For example, in Fig. 4 subgraph (a), Cresel is 3, which represents 3 periodic resources (including R(x, y)) corresponding to resource R(x, y).

[0078] For example, in Fig. 4 subgraph (a), the terminal device performs resource exclusion in the time slots t m Without performing listening, the terminal device performs resource exclusion according to each of the set of resource reservation periods M in the resource pool configuration used by the terminal device in turn. For a certain resource reservation period 1, assuming that the value of Q is calculated as 2, the corresponding Q time slots are the two time slots with horizontal line shading next to the mapping of resource reservation period 1 in Fig. 4 subgraph (a). m For a certain resource reservation period 2, assuming that the value of Q is calculated as Q = 1, the corresponding Q time slots are the one time slot with dot shading next to the mapping of resource reservation period 2 in Fig. 4 subgraph (a). m For a certain resource reservation period 2, assuming that the value of Q is calculated as Q = 1, the corresponding Q time slots are the one time slot with dot shading next to the mapping of resource reservation period 2 in Fig. 4 subgraph (a).

[0079] The terminal device will determine whether the Q time slots corresponding to each reservation period overlap with resource R(x, y) or the series of periodic resources corresponding to resource R(x, y), and if there is an overlap, the terminal device excludes resource R(x, y) from the resource set A.

[0080] Optionally, when the terminal device deactivates the reservation between TBs for the resource pool used by the terminal device, the terminal device can not perform Step 1-1.

[0081] Optionally, after performing Step 1-1, if the remaining resources in the resource set A are less than M total *X, the terminal device initializes the resource set A to all available resources belonging to the resource pool used by the terminal device within the resource selection window 10 and then performs Step 1-2.

[0082] Step 1-2: If the terminal device performs resource listening in the time slot t mThe terminal device overhears the first sidelink control information transmitted in the PSCCH, measures the SL-RSRP (Sidelink Reference Signal Received Power) of the PSCCH or the SL-RSRP of the PSSCH scheduled by the PSCCH (i.e. the SL-RSRP of the PSSCH transmitted in the same time slot as the PSCCH).

[0083] If the measured SL-RSRP is greater than the SL-RSRP threshold value, and the first sidelink control information received by the terminal device contains the "Resource reservation period" field, the terminal device will determine the corresponding Q time slots at intervals of the resource reservation period according to the time slot t m and the resource reservation period carried in the overheard first sidelink control information. The terminal device assumes that the same content of the first sidelink control information is also received in the Q time slots. The terminal device will determine whether the "Time resource assignment" and "Frequency resource assignment" fields of the received first sidelink control information and the Q assumed first sidelink control information indicate resources that overlap with the resource R(x, y) or the series of periodic resources corresponding to the resource R(x, y), and exclude the corresponding resource R(x, y) from the set A if they overlap. m (representing rounding up). Tscal is equal to the value of T2 converted into milliseconds. Prx is the resource reservation period carried in the overheard first sidelink control information. Optionally, the series of periodic resources corresponding to the resource R(x, y) is R(x, y + j*Ptxlg), j = 0, 1, 2, …, Cresel-1. Where Cresel is related to the random count value generated by the terminal device, and Ptxlg is the number of Ptx converted into logical time slots. Ptx is the resource reservation period of the terminal device. For example, in subgraph (b) of FIG. 4, Cresel is 3, which represents three periodic resources (including R(x, y)) corresponding to the resource R(x, y).

[0084] For example, in subgraph (b) of FIG. 4, when the first sidelink control information received by the terminal device contains the "Resource reservation period" field, if the terminal device overhears the first sidelink control information in the PSCCH on the resource E(v, m) in the time slot t m , the terminal device will assume that the same content of the first sidelink control information is also received in the time slot t m+Prxlg . The terminal device will determine whether the "Time resource assignment" and "Frequency resource assignment" fields of the received first sidelink control information and the Q assumed first sidelink control information indicate resources that overlap with the resource R(x, y) or the series of periodic resources corresponding to the resource R(x, y), and exclude the corresponding resource R(x, y) from the set A if they overlap.​m The resources 1, 2, 3, 4, 5, 6 indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the received first sidelink control information and the resource R(x, y) or the series of periodic resources corresponding to the resource R(x, y) are determined whether they overlap, and if they overlap and meet the RSRP condition, the resource R(x, y) is excluded from the resource set A. m+Prxlg The resources 1, 2, 3, 4, 5, 6 indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the received first sidelink control information and the resource R(x, y) or the series of periodic resources corresponding to the resource R(x, y) are determined whether they overlap, and if they overlap and meet the RSRP condition, the resource R(x, y) is excluded from the resource set A.

[0085] If the SL-RSRP measured by the terminal device is greater than the SL-RSRP threshold value, and the "Resource reservation period" field is not included in the first sidelink control information received by the terminal device, the terminal device only determines whether the resources indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first sidelink control information received by the terminal device overlap with the resource R(x, y) or the series of resources corresponding to the resource R(x, y), and if they overlap, the resource R(x, y) is excluded from the resource set A. m The resources 1, 2, 3, 4, 5, 6 indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the received first sidelink control information and the resource R(x, y) or the series of periodic resources corresponding to the resource R(x, y) are determined whether they overlap, and if they overlap and meet the RSRP condition, the resource R(x, y) is excluded from the resource set A.

[0086] For example, as shown in subgraph (b) of FIG. 4, if the "Resource reservation period" field is not included in the first sidelink control information received by the terminal device, the terminal device determines whether the resources 1, 2, 3 indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first sidelink control information received by the terminal device overlap with the resource R(x, y) or the series of resources corresponding to the resource R(x, y), and if they overlap, the resource R(x, y) is excluded from the resource set A. m If the first sidelink control information in the PSCCH is detected on the resource E(v, m), the terminal device determines whether the resources 1, 2, 3 indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first sidelink control information overlap with the resource R(x, y) or the series of periodic resources corresponding to the resource R(x, y), and if they overlap and meet the RSRP condition, the resource R(x, y) is excluded from the resource set A.

[0087] If the remaining resources in the resource set A after the above resource exclusion are insufficient M total *X, the SL-RSRP threshold value is raised by 3 dB, and Step 1 is re-executed. The resource set A after resource exclusion is reported to the upper layer as a candidate resource set by the physical layer.

[0088] Step 2: The upper layer randomly selects resources from the reported candidate resource set to send data. That is, the terminal device randomly selects resources from the candidate resource set to send data.

[0089] It should be noted that:

[0090] (1) The RSRP threshold is determined by the priority P1 carried in the PSCCH detected by the terminal device and the priority P2 of the data to be sent by the terminal device.

[0091] (2) The terminal device compares the measured PSCCH-RSRP or the PSSCH-RSRP scheduled by the PSCCH with the SL-RSRP threshold, which depends on the resource pool configuration of the resource pool used by the terminal device. The resource pool configuration can be network configured or preconfigured.

[0092] (3) The value of X can be {20%, 35%, 50%}. The terminal device contains a correspondence between the priority and the possible values of X in the configuration of the resource pool used by the terminal device, and determines the value of X according to the priority of the data to be sent and the correspondence. The resource pool configuration can be network configured or preconfigured.

[0093] The above description is a SL communication method in NR-V2X, that is, the terminal device selects the transmission resource by resource listening, and transmits data on the sidelink by itself. This SL communication method can also be applied to direct communication between handheld terminals, direct communication between pedestrians and vehicles, and various SL communications.

[0094] 5. LTE V2X physical layer structure

[0095] The physical layer structure of SL communication in LTE V2X system is shown in Figure 5. PSCCH is used to carry the second sidelink control information, and PSSCH is used to carry data. PSCCH and PSSCH are transmitted in the same subframe. The first symbol in the subframe is an AGC symbol, which can be used to adjust the receiving circuit when the SL UE receives, and adjust the parameters of the receiving circuit to a state suitable for receiving. When the SL UE transmits, the content in the symbol one symbol after the repeated transmission of the symbol in the AGC symbol is transmitted.

[0096] In LTE V2X, PSCCH and PSSCH can be continuous or discontinuous in the frequency domain.

[0097] The second sidelink control information is carried in PSCCH, which mainly contains resource listening related fields to facilitate other terminal devices to decode and select resources.

[0098] In addition, as to the resource reservation and the listen-based resource selection method in the LTE V2X system, similar to the NR V2X system, the present application does not make too much repetition. Here, only some simple introduction is made: in the LTE V2X system, the first to third information fields in the second sidelink control information are used to indicate the retransmission resources in the same TB. Optionally, the fourth information field in the second sidelink control information is also used to indicate the transmission resources of another TB. Among them, the first information field refers to the Frequency resource location of the initial transmission and retransmission in the second sidelink control information, the second information field refers to the Time gap between initial transmission and retransmission in the second sidelink control information, the third information field refers to the Retransmission index in the second sidelink control information, and the fourth information field refers to the Resource reservation in the second sidelink control information.

[0099] 6. Re-evaluation and Pre-emption mechanism in NR V2X

[0100] In NR-V2X, re-evaluation is also supported for the selected but not indicated resources by sending the first sidelink control information after completing the resource selection.

[0101] As shown in FIG. 6, resources x, y, z, u, and v are the time-frequency resources selected by the terminal device at slot n, and resource y is located at slot m. For resources z and u (resources y have been indicated by the first sidelink control information in resource x) to which the terminal device is about to send the first sidelink control information for the first indication, the terminal device performs Step 1 at least once at slot m-T3, i.e., at least at slot m-T3, the terminal device determines the resource selection window 10 and the resource listening window 20 according to the above description, and performs Step 1 to exclude the resources in the resource selection window 10 to obtain the candidate resource set. If resources z and / or u are not in the candidate resource set, the terminal device performs Step 2 to reselect the time-frequency resources in resources z and u that are not in the candidate resource set. Depending on the implementation of the terminal device, the terminal device can also reselect any selected but not indicated resource by sending the first sidelink control information, such as any one or more of resources z, u, and v. The above T3 is equal to T proc,1The dashed arrow in FIG. 6 represents the first sidelink control information indication to be sent, and the solid arrow represents the first sidelink control information indication already sent.

[0102] In addition, NR-V2X also supports resource pre-emption mechanism. In NR-V2X, the conclusion about resource pre-emption mechanism is described from the perspective of the pre-empted terminal. After completing resource selection, the terminal device still continuously listens to the first sidelink control information, and if the selected and indicated resource meets the following three conditions, it means that the resource is pre-empted by other terminal devices, and the terminal device triggers resource reselection for the resource:

[0103] 1. The terminal device has selected and indicated resources are not in the candidate resource set.

[0104] 2. The resource indicated in the listened first sidelink control information overlaps with the terminal device selected and indicated resource, and the SL-RSRP of the PSCCH corresponding to the listened first sidelink control information or the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than the SL RSRP threshold.

[0105] 3. The priority carried in the listened first sidelink control information is higher than the priority of the data to be sent by the terminal device. Or the priority carried in the listened first sidelink control information is higher than the priority of the data to be sent by the terminal device, and the priority carried in the listened first sidelink control information is higher than the threshold value U, U depends on the resource pool configuration, which can be configured by the network or pre-configured.

[0106] As shown in FIG. 7, resources w, x, y, z, and v are the time-frequency resources selected by the terminal device in slot n, and resource x is in slot m. For the resources x and y that the terminal device is about to send the first sidelink control information indication on and has been sent by the terminal device before, the terminal device performs Step 1 at least once in slot m-T3, i.e. at least in slot m-T3, the resource selection window 10 and the resource listening window 20 are determined according to the above, and the available resources in the resource selection window 10 are excluded according to the above Step 1, and the candidate resource set is determined. If resources x and / or y meet the above three conditions, the terminal device performs Step 2 to reselect the time-frequency resources in resources x and y that meet the above three conditions. In addition, after triggering resource reselection, depending on the implementation of the terminal device, the terminal device can reselect any selected but not indicated by sending the first sidelink control information indication resource, such as any of resources z and v. The above T3 is equal to T proc,1 .

[0107] 7. Dynamic spectrum sharing

[0108] In both LTE SL and NR SL, the concept of resource pool is introduced, i.e., SL transmission occurs in the resource pool of SL. One of the purposes of introducing the resource pool is to avoid resource conflict between uplink transmission and sidelink transmission. That is, when the base station schedules uplink transmission of the UE, it will not schedule uplink transmission in the configured resource pool of SL, and by this way of semi-statically configuring the resource pool, the time-frequency resource range of uplink transmission and sidelink transmission is isolated.

[0109] In related discussions, the scenario of dynamic sharing of resource pools by LTE SL UEs and NR SL UEs has been supported. As shown in FIG. 8, the NR SL UE is a dual-mode terminal including an LTE SL module and an NR SL module, the LTE SL module can collect the LTE SL SCI sent by other LTE SL UEs, and the listening result is delivered to the NR SL module inside the UE, the NR SL module performs resource exclusion according to the LTE SL SCI listened by the LTE SL module, and selects the transmission resource of the NR SL in the resource set after the resource exclusion, so as to avoid resource conflict between the NR SL UE and the LTE SL UE.

[0110] From the above introduction, it can be known that at present, only the UL and SL share the spectrum by the way of semi-statically configuring the resource pool, and the present application considers supporting the dynamic sharing of the spectrum by the UL and the SL in the future network. In addition, in the future network, the SL can refer to the deployed LTE SL or the deployed NR SL, since the coexistence of the LTE SL and the NR SL in the same resource pool is already supported at present, the SL can also refer to the LTE SL and the NR SL deployed at the same time. Therefore, the present application also classifies and discusses the dynamic spectrum sharing of the UL and the LTE SL and / or the NR SL in the future network.

[0111] Please refer to FIG. 9, which shows the flowchart of the resource indication method provided by an embodiment of the present application. The method can be applied to the network architecture shown in FIG. 1. The method can include at least one of the steps 910-930.

[0112] Step 910, the first terminal device determines a first transmission resource.

[0113] In some embodiments, the first terminal device can be any terminal device. The first terminal device supports uplink transmission and sidelink transmission.

[0114] In some embodiments, the first transmission resource is used for uplink transmission. The first transmission resource can include time domain resource and / or frequency domain resource.

[0115] In some embodiments, the first transmission resource is determined based on first signaling sent by the network device. The network device sends the first signaling, and the first terminal device receives the first signaling accordingly.

[0116] In some embodiments, the first signaling is used to indicate one or more groups of the first transmission resource. The first signaling can indicate one group of the first transmission resource, or can indicate multiple groups of the first transmission resource. Each group of the first transmission resource can include one or more transmission resources. Optionally, each transmission resource occupies a continuous time in the time domain and a continuous frequency in the frequency domain.

[0117] In some embodiments, the first signaling includes at least one group of indication domains, each group of indication domains includes at least one indication domain, and each group of indication domains is used to indicate a group of the first transmission resource. For example, each group of indication domains is used to indicate the time domain location and the frequency domain location of a group of the first transmission resource, and optionally, when the first transmission resource is a periodic resource, the group of indication domains can also indicate the period of the first transmission resource. For example, a group of indication domains includes a time domain resource indication domain and a frequency domain resource indication domain, which are respectively used to indicate the time domain and the frequency domain location of the first transmission resource. For example, a group of indication domains includes a time domain resource indication domain, a frequency domain resource indication domain, and a period, which are respectively used to indicate the time domain location, the frequency domain location, and the period of the first transmission resource.

[0118] In some embodiments, the first transmission resource satisfies at least one of the following characteristics: the first transmission resource includes one or more sub-channels; the first transmission resource includes one or more time units, and the time unit is a time slot or a sub-frame; and the first transmission resource is a periodic resource. It should be understood that each group of the first transmission resource satisfies at least one of the above characteristics.

[0119] In some embodiments, the period of the first transmission resource corresponds to one of the resource reservation periods of the sidelink communication. For example, the resource reservation periods of the sidelink communication include period 1, period 2, period 3, and period 4, and the period of the first transmission resource can be any one of the above period 1, period 2, period 3, and period 4, such as period 1. For example, the period of the first transmission resource is one of the allowed resource reservation periods in the NR SL. For example, the period of the first transmission resource is one of the allowed resource reservation periods in the LTE SL. For example, the period of the first transmission resource is one of the intersection or union of the allowed resource reservation periods in the NR SL and the allowed resource reservation periods in the LTE SL.

[0120] When the network device indicates the first transmission resource to the first terminal device, the network device also uses the sub-channels and the time slots / sub-frames as the granularity in order for the first terminal device to reuse the existing indication domain of the first sidelink control information of the NR SL or the second sidelink control information of the LTE SL to indicate the first transmission resource.

[0121] In some embodiments, when the first signaling indicates multiple groups of first transmission resources, the periods of different groups of first transmission resources can be the same or different. For example, the first signaling indicates two groups of first transmission resources, and both of the two groups of first transmission resources are periodic resources. For example, the period of the first group of first transmission resources and the period of the second group of first transmission resources can be the same, such as both being period 1; or the period of the first group of first transmission resources and the period of the second group of first transmission resources can be different, such as the period of the first group of first transmission resources being period 1 and the period of the second group of first transmission resources being period 3. In some embodiments, when the first signaling indicates multiple groups of first transmission resources, the multiple groups of first transmission resources can all be periodic resources, or all be aperiodic resources, or include both periodic resources and aperiodic resources.

[0122] In some embodiments, the network device sends the first signaling when the CBR (Channel Busy Ratio) reported by the first terminal device is less than or equal to a first threshold. The first terminal device can measure the CBR and report the measured CBR to the network device. The first threshold is a threshold of the CBR, which can be configured by the network device, preconfigured, standard predefined, or dependent on the implementation of the first terminal device.

[0123] In some embodiments, the first terminal device can send a first request scheduling signaling to the network device, and the first request scheduling signaling is used to request the network device to schedule resources for uplink transmission for the first terminal device. After receiving the first request scheduling signaling, the network device sends the first signaling. For example, the first request scheduling signaling can be a SR (Scheduling Request) and / or a BSR (Buffer Status Report).

[0124] Step 920: The first terminal device sends sidelink control information to indicate the first transmission resource.

[0125] In some embodiments, the sidelink control information is control information in a SL communication system. Optionally, the first terminal device sends the sidelink control information to indicate the first transmission resource in a broadcast manner.

[0126] In some embodiments, the sidelink control information includes first sidelink control information and / or second sidelink control information, and the first sidelink control information and the second sidelink control information are sidelink control information in two different communication systems. Optionally, the first sidelink control information and / or the second sidelink control information can be sent in a broadcast manner.

[0127] In some embodiments, the first sidelink control information is sidelink control information in a NR system or a 5G system, and the second sidelink control information is sidelink control information in a LTE system or a 4G system or an E-UTRA (Evolved Universal Terrestrial Radio Access) system. Exemplarily, the first sidelink control information is SCI format 1-A, and the second sidelink control information is SCI format 1.

[0128] In some embodiments, as introduced above, the first sidelink control information is carried in a PSCCH and mainly includes resource sensing related fields, so as to facilitate other terminal devices to decode and perform resource exclusion and resource selection. The first sidelink control information can include a “Time resource assignment” field and a “Frequency resource assignment” field, and optionally, a “Resource reservation period” field. Through the above information fields included in the first sidelink control information, the first transmission resource can be indicated.

[0129] In some embodiments, as introduced above, the second sidelink control information is carried in a PSCCH and mainly includes resource sensing related fields, so as to facilitate other terminal devices to decode and perform resource exclusion and resource selection. The second sidelink control information can include the first to third information fields introduced above, and optionally, a fourth information field. The introduction and description of the above information fields can be referred to the above. Through the above information fields included in the second sidelink control information, the first transmission resource can be indicated.

[0130] In some embodiments, the first terminal device transmits the sidelink control information indicating the first transmission resource before the time domain position of the first transmission resource. In some embodiments, the first terminal device transmits the sidelink control information indicating the first transmission resource using a second transmission resource, and the time domain position of the second transmission resource is before the time domain position of the first transmission resource. In some embodiments, the second transmission resource is indicated by a network device or autonomously determined by the first terminal device.

[0131] In some embodiments, the number of the second transmission resources is a plurality, and the time domain positions of the plurality of second transmission resources are all before the time domain position of the first transmission resource. Optionally, the sidelink control information transmitted on the plurality of second transmission resources indicates the same first transmission resource.

[0132] In some embodiments, when the first signaling indicates multiple groups of the first transmission resources, for each group of the first transmission resources, the one or more second transmission resources corresponding to the group of the first transmission resources have time domain locations before the time domain locations of the group of the first transmission resources, and the first terminal device transmits the sidelink control information to indicate the group of the first transmission resources using the second transmission resources corresponding to the group of the first transmission resources.

[0133] In some embodiments, the second transmission resources include PSCCH resources and / or PSSCH resources.

[0134] In some embodiments, the first terminal device transmits the sidelink control information to indicate the first transmission resources using a resource in the first transmission resources. In some embodiments, the first terminal device transmits the sidelink control information to indicate the first transmission resources using a resource in the first transmission resources. In some embodiments, the resource in the first transmission resources includes resources in the first N time units in the first transmission resources, where N is a positive integer. For example, when N is equal to 1, the resource in the first transmission resources includes resources in the first time unit in the first transmission resources. Here, the time unit can also be a slot or a subframe. In some embodiments, when the first signaling indicates multiple groups of the first transmission resources, for each group of the first transmission resources, the first terminal device transmits the sidelink control information to indicate the group of the first transmission resources using resources in the first N time units in the group of the first transmission resources. Optionally, the sidelink control information transmitted in the first N time units in the group of the first transmission resources indicates the same group of the first transmission resources.

[0135] In some embodiments, when the sidelink control information indicates the first transmission resources, the priority value indicated in the sidelink control information is less than or equal to a priority threshold value, which is configured or preconfigured by the network device or predefined by a standard or dependent on the implementation of the first terminal device. It should be understood that the priority threshold value refers to the threshold value of the priority value. In this application, the smaller the priority value, the higher the priority; on the contrary, the larger the priority value, the lower the priority. If the other terminal devices receiving the sidelink control information support the Pre-emption mechanism, when the priority value indicated in the sidelink control information transmitted by the first terminal device is low, even if the resources have been selected and indicated by the other terminal devices, when there is a conflict with the first transmission resources, the resource reselection in the Pre-emption checking will be triggered, i.e., the other terminal devices reselect the resources they have selected and indicated to avoid the transmission conflict with the first transmission resources.

[0136] Step 930, the first terminal device performs uplink transmission based on the first transmission resources.

[0137] In some embodiments, the first terminal device uses all or part of the first transmission resource for uplink transmission.

[0138] In some embodiments, the resource used for uplink transmission is autonomously determined by the first terminal device; or the resource used for uplink transmission is indicated by the network device.

[0139] In some embodiments, in the case where the resource used for uplink transmission is indicated by the network device, the method further comprises: the first terminal device receiving the second signaling sent by the network device, the second signaling being used for scheduling the resource used for uplink transmission.

[0140] In some embodiments, the first terminal device sends second request scheduling signaling to the network device, the second request scheduling signaling being used for requesting the network device to schedule the resource used for uplink transmission for the first terminal device. Illustratively, the second request scheduling signaling is used for requesting to schedule the resource included in the first transmission resource for uplink transmission. After receiving the above-mentioned second request scheduling signaling, the network device schedules the resource used for uplink transmission for the first terminal device, and then sends second signaling to the first terminal device, through which the network device indicates the resource used for uplink transmission scheduled for the first terminal device to the first terminal device. Optionally, the second request scheduling signaling can be SR and / or BSR.

[0141] The technical scheme provided by the embodiments of the present application determines the first transmission resource used for uplink transmission by the first terminal device, and indicates the first transmission resource to other terminal devices through the transmission of sidelink control information, so that other terminal devices exclude the first transmission resource when selecting resources for sidelink communication. In this way, when the first terminal device uses the first transmission resource for uplink transmission, it can avoid other terminal devices also selecting the first transmission resource for sidelink transmission, avoiding the problem of interference between UL and SL transmission, thereby avoiding resource conflict in the scenario of supporting dynamic sharing of UL and SL spectrum, realizing dynamic coexistence of UL and SL, and increasing spectrum utilization.

[0142] In the following, the technical scheme of the present application is introduced and described through several different embodiments.

[0143] Embodiment 1: Dynamic coexistence of UL and NR SL

[0144] For example, as shown in FIG. 10, from the perspective of the inside of the first terminal device, the first terminal device includes an NR SL module and a Uu module, illustratively, the Uu module is a 6G Uu module. The Uu module receives the first signaling, determines the first transmission resource according to the indication of the first signaling, and then indicates the first transmission resource to the NR SL module, and the NR SL module indicates the first transmission resource by transmitting the first sidelink control information.

[0145] From the above autonomous resource selection algorithm of NR SL, it can be known that when the NR SL module of the first terminal device indicates the first transmission resource by sending the first sidelink control information, other NR SL terminal devices will decode the first sidelink control information and perform resource exclusion according to the first transmission resource indicated by the first sidelink control information. That is, other NR SL terminal devices will exclude resources that overlap with the first transmission resource. For example, as shown in FIG. 11, when uplink and downlink transmission and NR SL are deployed in the network, the network device indicates the first transmission resource to the Uu module of UE 1 through the first signaling, the Uu module of UE 1 forwards the first transmission resource to the NR SL module, and the NR SL module of UE 1 indicates the first transmission resource to other UEs containing the NR SL module through the first sidelink control information. When the NR SL modules of UE 2 and UE 3 receive the first sidelink control information, they will exclude resources that overlap with the first transmission resource when determining the sidelink transmission resource respectively. Therefore, since the first sidelink control information is broadcast, the NR SL UEs around UE 1 will avoid selecting resources that overlap with the first transmission resource when performing autonomous resource selection to determine the sidelink transmission resource. If the Uu module of UE 1 performs uplink transmission on all or part of the resources of the first transmission resource, it can avoid conflict with the sidelink transmission of other NR SL UEs, and realize dynamic coexistence of UL and NR SL.

[0146] In addition, since the NR SL also supports the Pre-emption mechanism, for example, the NR SL modules of UE 2 and UE 3 both support the Pre-emption mechanism, when the priority value in the first sidelink control information indicating the first transmission resource sent by the NR SL module of UE 1 is low (for example, lower than the threshold of the configured priority value), even if the resources selected by UE 2 and UE 3 and indicated by the first sidelink control information of UE 2 and UE 3 respectively, when there is a conflict with the first transmission resource, the resource reselection in the Pre-emption checking will be triggered, that is, UE 2 and UE 3 reselect the resources they have selected and indicated, to avoid the transmission conflict with the first transmission resource.

[0147] Optionally, the NR SL module of the first terminal device indicates the first transmission resource through at least one of Time resource assignment, Frequency resource assignment and resource reservation period.

[0148] For example, as shown in FIG. 12, the first transmission resource includes resources y and z. The resource y or z corresponds to one or more sub-channels in the frequency domain and one time slot in the time domain. It can be understood that the network device also indicates the first transmission resource to the first terminal device in the granularity of sub-channels and time slots when indicating the first transmission resource, so as to reuse the existing indication domain of the first sidelink control information of the NR SL to indicate the first transmission resource. The NR SL module of the first terminal device transmits the first sidelink control information in a resource x before the resources y and z through the PSCCH, and indicates the resources y and z by using the time resource assignment and the frequency resource assignment. Optionally, the resource x is indicated by the network device or is autonomously determined by the NR SL module of the first terminal device through resource listening. Optionally, the resource x is consistent with the frequency domain width of the resources y and z. Optionally, the resource x corresponds to one time slot in the time domain. It can be understood that the first sidelink control information transmitted on the resource x also indicates the resource x by using the time resource assignment and the frequency resource assignment.

[0149] For example, as shown in FIG. 12, the first transmission resource includes resources x, y and z. The resource x or y or z corresponds to one or more sub-channels in the frequency domain and one time slot in the time domain. Then, the NR SL module of the first terminal device transmits the first sidelink control information in the resource x in the first time unit in the resources x, y and z through the PSCCH, and indicates the resources x, y and z by using the time resource assignment and the frequency resource assignment. Optionally, the resource x is consistent with the frequency domain width of the resources y and z. It can be understood that the first sidelink control information transmitted on the resource x also indicates the resource x by using the time resource assignment and the frequency resource assignment.

[0150] For example, as shown in FIG. 12, the first transmission resource includes resources y, z, m, n and k. The resource y or z or m or n or k corresponds to one or more sub-channels in the frequency domain and corresponds to one time slot in the time domain. Then, the NR SL module of the first terminal device transmits the first sidelink control information through the PSCCH in the resource x before the resources y, z, m, n and k, and indicates the resources y, z, m, n and k by using the time resource assignment, the frequency resource assignment and the resource reservation period field. Optionally, the resource x is indicated by the network device or determined by the first terminal device through resource listening. Optionally, the frequency domain widths of the resources x, y, z, m, n and k are consistent. Optionally, the resource x corresponds to one time slot in the time domain. It can be understood that the first sidelink control information transmitted on the resource x also indicates the resource x by using the time resource assignment and the frequency resource assignment. Optionally, the frequency domain positions of the resources x and m, y and n, and z and k are the same, and the time domain interval corresponds to the resource reservation period indicated by the resource reservation period field. In the figure, only the case where the number of periods is 1 is taken as an example.

[0151] For example, as shown in FIG. 12, the first transmission resource includes resources x, y, z, m, n and k. The resource x or y or z or m or n or k corresponds to one or more sub-channels in the frequency domain and corresponds to one time slot in the time domain. Then, the NR SL module of the first terminal device transmits the first sidelink control information through the PSCCH in the resource x in the first time unit of the resources x, y, z, m, n and k, and indicates the resources x, y, z, m, n and k by using the time resource assignment, the frequency resource assignment and the resource reservation period field. Optionally, the frequency domain widths of the resources x, y, z, m, n and k are consistent. It can be understood that the first sidelink control information transmitted on the resource x also indicates the resource x by using the time resource assignment and the frequency resource assignment. Optionally, the frequency domain positions of the resources x and m, y and n, and z and k are the same, and the time domain interval corresponds to the resource reservation period indicated by the resource reservation period field. In the figure, only the case where the number of periods is 1 is taken as an example.

[0152] It can be understood that the period of each set of first transmission resources indicated by the network device should correspond to one of the resource reservation periods in the NR SL, so that the NR SL module of the first terminal device can indicate the first transmission resources through the resource reservation period field.

[0153] Optionally, when the NR SL module of the first terminal device indicates the first transmission resources through the first sidelink control information, the priority value indicated in the first sidelink control information should be less than or equal to a priority threshold value, where the smaller the priority value, the higher the priority. The priority threshold value is configured or preconfigured by the network device, or is pre-defined by the standard, or depends on the implementation of the first terminal device. For example, it is the priority threshold value in the pre-emption condition 3 in FIG. 7.

[0154] The Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resources.

[0155] Optionally, the Uu module of the first terminal device uses all or part of the resources of the first transmission resources for uplink transmission by itself. For example, the first transmission resources include resources y and z, when the Uu module of the first terminal device has uplink data to be transmitted, it can directly use resources y and z, or use y or z, or use part of the time-frequency resources shaded in resource y for uplink transmission. For another example, the first transmission resources include resources x, y and z, since resource x has been used for sidelink transmission PSCCH and PSSCH (PSCCH and PSSCH are transmitted in the same time slot), when the Uu module of the first terminal device has uplink data to be transmitted, it can directly use resources y and z, or use y or z, or use part of the time-frequency resources shaded in resource y for uplink transmission.

[0156] Optionally, the Uu module of the first terminal device performs uplink transmission on all or part of the first transmission resources according to an indication of the second signaling sent by the network. For example, the first transmission resources include resources y, z, m, n and k, when the Uu module of the first terminal device has uplink data to be transmitted, it can send a second request scheduling signaling, such as SR and / or BSR, to the network device, and the network device can schedule the Uu module of the first terminal device to use resources y, z, m, n and k, or use y or z or m or n or k, or use part of the time-frequency resources indicated by the shadow in resource n for uplink transmission through the second signaling after receiving the second request scheduling signaling. For another example, the first transmission resources include resources x, y, z, m, n and k, since resource x has been used for sidelink transmission PSCCH and PSSCH (PSCCH and PSSCH are transmitted in the same time slot), when the Uu module of the first terminal device has uplink data to be transmitted, it can send a second request scheduling signaling, such as SR and / or BSR, to the network device, and the network device can schedule the Uu module of the first terminal device to use resources y, z, m, n and k, or use y or z or m or n or k, or use part of the time-frequency resources indicated by the shadow in resource n for uplink transmission through the second signaling after receiving the second request scheduling signaling.

[0157] Embodiment 2: Dynamic coexistence of UL and LTE SL

[0158] For example, as shown in FIG. 13, from the perspective of the inside of the first terminal device, the first terminal device includes an LTE SL module and a Uu module, and exemplarily, the Uu module is a 6G Uu module. The Uu module receives the first signaling, determines the first transmission resources according to the indication of the first signaling, and then indicates the first transmission resources to the LTE SL module, and the LTE SL module indicates the first transmission resources by sending the second sidelink control information.

[0159] From the autonomous resource selection algorithm of the LTE SL above, it can be learned that when the LTE SL module of the first terminal device indicates the first transmission resource by sending the second sidelink control information, other LTE SL terminal devices will decode the second sidelink control information and exclude resources that overlap with the first transmission resource according to the indication of the first transmission resource in the second sidelink control information. That is, other LTE SL terminal devices will exclude resources that overlap with the first transmission resource. For example, as shown in FIG. 14, when uplink and downlink transmission and LTE SL are deployed in the network, the network device indicates the first transmission resource to the Uu module of UE 1 through the first signaling, the Uu module of UE 1 forwards the first transmission resource to the LTE SL module, and the LTE SL module of UE 1 indicates the first transmission resource to other UEs containing the LTE SL module through the second sidelink control information. When the LTE SL modules of UE 2 and UE 3 receive the second sidelink control information, they will exclude resources that overlap with the first transmission resource when determining the sidelink transmission resource respectively. Therefore, since the second sidelink control information is broadcast, the LTE SL UEs around UE 1 will avoid selecting resources that overlap with the first transmission resource when performing autonomous resource selection to determine the sidelink transmission resource. If the Uu module of UE 1 performs uplink transmission on all or part of the first transmission resource, it can avoid collision with the sidelink transmission of other LTE SL UEs, and realize dynamic coexistence of UL and LTE SL.

[0160] Optionally, the LTE SL module of the first terminal device indicates the first transmission resource through at least one of the first to third information fields and the resource reservation (i.e., the fourth information field).

[0161] For example, as shown in FIG. 15, the first transmission resource includes a resource y. The resource y corresponds to one or more sub-channels in the frequency domain and one subframe in the time domain. It can be understood that when the network device indicates the first transmission resource to the first terminal device, it is also in the granularity of sub-channels and subframes in order for the first terminal device to reuse the existing indication field of the second sidelink control information of the LTE SL to indicate the first transmission resource. The LTE SL module of the first terminal device sends the second sidelink control information through the PSCCH in the resource x before the resource y, and indicates the resource y by using the first to third information fields. Optionally, the resource x is indicated by the network device or autonomously determined by the LTE SL module of the first terminal device through resource listening. Optionally, the frequency domain width of the resources x and y is consistent. Optionally, the resource x corresponds to one subframe in the time domain. It can be understood that the second sidelink control information transmitted on the resource x also indicates the resource x by using the first to third information fields.

[0162] For example, as shown in FIG. 15, the first transmission resource includes resources x and y. The resource x or y corresponds to one or more sub-channels in the frequency domain and corresponds to one subframe in the time domain. Then, the LTE SL module of the first terminal device transmits the second sidelink control information in the resource x in the first time unit in the resources x and y through the PSCCH, and indicates the resources x and y by using the first to third information fields. Optionally, the frequency domain widths of the resources x and y are consistent. It can be understood that the second sidelink control information transmitted on the resource x also indicates the resource x by using the first to third information fields.

[0163] For example, as shown in FIG. 15, the first transmission resource includes resources y, m and n. The resource y or m or n corresponds to one or more sub-channels in the frequency domain and corresponds to one subframe in the time domain. Then, the LTE SL module of the first terminal device transmits the second sidelink control information in the resource x before the resources y, m and n through the PSCCH, and indicates the resources y, m and n by using the first to third information fields and the resource reservation field. Optionally, the resource x is indicated by the network device or autonomously determined by the LTE SL module of the first terminal device through resource listening. Optionally, the frequency domain widths of the resources x, y, m and n are consistent. Optionally, the resource x corresponds to one subframe in the time domain. It can be understood that the second sidelink control information transmitted on the resource x also indicates the resource x by using the first to third information fields. Optionally, the frequency domain positions of the resources x and m, y and n are the same, and the time domain interval corresponds to the resource reservation period indicated by the resource reservation field. In the figure, only the case that the number of periods is 1 is taken as an example.

[0164] For example, as shown in FIG. 15, the first transmission resource includes resources x, y, m and n. The resource x or y or m or n corresponds to one or more sub-channels in the frequency domain and corresponds to one subframe in the time domain. Then, the LTE SL module of the first terminal device transmits the second sidelink control information in the resource x in the first time unit in the resources x, y, m and n through the PSCCH, and indicates the resources x, y, m and n by using the first to third information fields and the resource reservation field. Optionally, the frequency domain widths of the resources x, y, m and n are consistent. It can be understood that the second sidelink control information transmitted on the resource x also indicates the resource x by using the first to third information fields. Optionally, the frequency domain positions of the resources x and m, y and n are the same, and the time domain interval corresponds to the resource reservation period indicated by the resource reservation field. In the figure, only the case that the number of periods is 1 is taken as an example.

[0165] It can be understood that the period of the first transmission resource indicated by the network device should correspond to one of the resource reservation periods in the LTE SL, so that the LTE SL module of the first terminal can indicate the first transmission resource through the resource reservation field.

[0166] The Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resource.

[0167] Optionally, the Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resource by itself. For example, the first transmission resource includes resource y, when the Uu module of the first terminal device has uplink data to be transmitted, it can directly use resource y, or use part of the time-frequency resources marked with shading in resource y to perform uplink transmission. For another example, the first transmission resource includes resources x and y, since resource x has been used for sidelink transmission PSCCH and PSSCH (PSCCH and PSSCH are transmitted in the same subframe), when the Uu module of the first terminal device has uplink data to be transmitted, it can directly use resource y, or use part of the time-frequency resources marked with shading in resource y to perform uplink transmission.

[0168] Optionally, the Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resource according to the indication of the second signaling sent by the network device. For example, the first transmission resource includes resources y, m and n, when the Uu module of the first terminal device has uplink data to be transmitted, it can send a second request scheduling signaling, such as SR and / or BSR, to the network device, and the network device can schedule the Uu module of the first terminal device to use resources y, m and n, or use y or m or n, or use part of the time-frequency resources marked with shading in resource n to perform uplink transmission through the second signaling after receiving the second request scheduling signaling. For another example, the first transmission resource includes resources x, y, m and n, since resource x has been used for sidelink transmission PSCCH and PSSCH (PSCCH and PSSCH are transmitted in the same subframe), when the Uu module of the first terminal device has uplink data to be transmitted, it can send a second request scheduling signaling, such as SR and / or BSR, to the network device, and the network device can schedule the Uu module of the first terminal device to use resources y, m and n, or use y or m or n, or use part of the time-frequency resources marked with shading in resource n to perform uplink transmission through the second signaling after receiving the second request scheduling signaling.

[0169] Embodiment 3: Dynamic coexistence of UL with NR SL and LTE SL

[0170] In some embodiments, the above-mentioned embodiment 2 can also be extended to be applied in a scenario where both LTE SL and NR SL are deployed, that is, embodiment 2 can also be used to support dynamic spectrum sharing of UL with LTE SL and NR SL.

[0171] For example, as shown in FIG. 16, from the perspective of the inside of the first terminal device, the first terminal device includes an NR SL module, an LTE SL module, and a Uu module, and the Uu module is exemplarily a 6G Uu module. The Uu module receives the first signaling, determines the first transmission resource according to the indication of the first signaling, and then the Uu module indicates the first transmission resource to the LTE SL module, and the LTE SL module indicates the first transmission resource by sending the second sidelink control information. That is, by also only sending the second sidelink control information to indicate the first transmission resource, the purpose of coexistence of UL with LTE SL and NR SL at the same time can be achieved. It can be understood that although the first device includes an NR SL module and an LTE SL module, only the LTE SL module indicates the first transmission resource by sending the second sidelink control information.

[0172] From the autonomous resource selection algorithm of the LTE SL above, it can be known that when the LTE SL module of the first terminal device indicates the first transmission resource through the sending of the second sidelink control information, other LTE SL terminal devices will decode the second sidelink control information and perform resource exclusion according to the first transmission resource indicated by the second sidelink control information. That is, other LTE SL terminal devices will exclude resources that overlap with the first transmission resource. For example, as shown in FIG. 17, when uplink and downlink transmission and LTE SL and NR SL are deployed in the network, the network device indicates the first transmission resource to the Uu module of UE 1 through the first signaling, the Uu module of UE 1 forwards the first transmission resource to the LTE SL module, and the LTE SL module of UE 1 indicates the first transmission resource to other UEs containing the LTE SL module through the second sidelink control information. When the LTE SL modules of UEs 2-5 receive the second sidelink control information, they will exclude resources that overlap with the first transmission resource when determining the sidelink transmission resource respectively. In addition, in combination with FIG. 8, when LTE SL and NR SL coexist, it has been supported that the LTE SL module forwards the resource indicated by the second sidelink control information listened to to the NR SL module, and the NR SL module performs corresponding resource exclusion. Therefore, as shown in FIG. 17, the LTE SL module of UE 2 and 3 will further forward the first transmission resource indicated by the second sidelink control information of UE 1 listened to to the NR SL module, and the NR SL module will also exclude resources that overlap with the first transmission resource when determining the sidelink transmission resource. Therefore, since the second sidelink control information is broadcast, the LTE SL modules of the UEs around UE 1 will all avoid selecting resources that overlap with the first transmission resource when performing autonomous resource selection to determine the sidelink transmission resource, and the NR SL modules of the UEs around UE 1 will also all avoid selecting resources that overlap with the first transmission resource when performing autonomous resource selection to determine the sidelink transmission resource. If the Uu module of UE 1 performs uplink transmission on all or part of the resources of the first transmission resource, it can avoid collision with the sidelink transmission of the LTE SL modules and the NR SL modules of other UEs, thereby realizing simultaneous coexistence of UL and LTE SL and NR SL.

[0173] Optionally, how the LTE SL module of the first terminal device indicates the first transmission resource through the second sidelink control information and how the Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resource can be referred to Embodiment 2, which will not be described here.

[0174] Optionally, when the LTE SL module of the first terminal device indicates the first transmission resource through the second sidelink control information, the priority value indicated in the second sidelink control information should be less than or equal to a priority threshold value, where the smaller the priority value, the higher the priority. The priority threshold value is configured by the network device or pre-configured or standard-defined or dependent on the implementation of the first terminal device. For example, the priority threshold value in pre-emption condition 3 in FIG. 7. Illustratively, the priority value indicated in the second sidelink control information is used for the NR SL modules of UEs 2 and 3 in FIG. 17 to trigger resource reselection in pre-emption checking.

[0175] Embodiment 4: UL dynamic coexistence with NR SL and LTE SL

[0176] For example, as shown in FIG. 18, from the perspective of the inside of the first terminal device, the first terminal device includes an NR SL module, an LTE SL module, and a Uu module, illustratively, the Uu module is a 6G Uu module. The Uu module receives the first signaling, determines the first transmission resource according to the indication of the first signaling, and then the Uu module indicates the first transmission resource to the NR SL module, the NR SL module indicates the first transmission resource by sending the first sidelink control information, and the Uu module indicates the first transmission resource to the LTE SL module, and the LTE SL module indicates the first transmission resource by sending the second sidelink control information.

[0177] From the above autonomous resource selection algorithm of LTE SL, it can be known that when the LTE SL module of the first terminal device indicates the first transmission resource by sending the second sidelink control information, other LTE SL terminal devices will decode the second sidelink control information and exclude resources that overlap with the first transmission resource according to the first transmission resource indicated by the second sidelink control information. That is, other LTE SL terminal devices will exclude resources that overlap with the first transmission resource. For example, as shown in FIG. 19, when uplink and downlink transmission and LTE SL and NR SL are deployed in the network, the network device indicates the first transmission resource to the Uu module of UE 1 through the first signaling, the Uu module of UE 1 forwards the first transmission resource to the LTE SL module, and the LTE SL module of UE 1 indicates the first transmission resource to other UEs containing LTE SL modules through the second sidelink control information. When the LTE SL modules of UEs 2-5 receive the second sidelink control information, they will exclude resources that overlap with the first transmission resource when determining the sidelink transmission resource.

[0178] From the autonomous resource selection algorithm of the NR SL above, it can be known that when the first terminal device indicates the first transmission resource through the first sidelink control information sent by the NR SL module, other NR SL terminal devices will decode the first sidelink control information and perform resource exclusion according to the first transmission resource indicated by the first sidelink control information. That is, other NR SL terminal devices will exclude resources that overlap with the first transmission resource. For example, as shown in FIG. 19, the network device indicates the first transmission resource to the Uu module of UE 1 through the first signaling, the Uu module of UE 1 forwards the first transmission resource to the NR SL module, and the NR SL module of UE 1 indicates the first transmission resource to other UEs containing the NR SL module through the first sidelink control information. When the NR SL modules of UE 2 and UE 3 receive the first sidelink control information, they will exclude resources that overlap with the first transmission resource when determining the sidelink transmission resource respectively.

[0179] In addition, in combination with FIG. 8, when the LTE SL and the NR SL coexist, it has been supported that the LTE SL module forwards the resource indicated by the second sidelink control information listened to to the NR SL module, and the NR SL module performs corresponding resource exclusion. Therefore, as shown in FIG. 19, the LTE SL modules of UE 2 and 3 will further forward the first transmission resource indicated by the second sidelink control information of UE 1 listened to to the NR SL modules, and the NR SL modules will also exclude resources that overlap with the first transmission resource when determining the sidelink transmission resource.

[0180] Therefore, since the first sidelink control information and the second sidelink control information are broadcast, the LTE SL modules of the UEs around UE 1 will all avoid selecting resources that overlap with the first transmission resource when performing autonomous resource selection to determine the sidelink transmission resource, and the NR SL modules of the UEs around UE 1 will also all avoid selecting resources that overlap with the first transmission resource when performing autonomous resource selection to determine the sidelink transmission resource. If the Uu module of UE 1 performs uplink transmission on all or part of the resources of the first transmission resource, the sidelink transmission conflict with the LTE SL modules and the NR SL modules of other UEs can be avoided, so as to realize the simultaneous coexistence of UL, the LTE SL and the NR SL.

[0181] Optionally, the LTE SL module of the first terminal device indicates the first transmission resource through at least one of the first to third information fields and the resource reservation. The NR SL module of the first terminal device indicates the first transmission resource through at least one of the Time resource assignment, the Frequency resource assignment and the resource reservation period.

[0182] For example, as shown in FIG. 20, the first transmission resource includes resource y. Resource y corresponds to one or more sub-channels in the frequency domain and corresponds to one subframe or one slot in the time domain, assuming that the subcarrier spacing of LTE SL and NR SL is the same, both being 15 kHz, that is, one subframe is equivalent to one slot. The NR SL module of the first terminal device transmits the first sidelink control information through PSCCH on resource z before resource y, and indicates resource y through the time resource assignment and frequency resource assignment fields. Meanwhile, the LTE SL module of the first terminal device transmits the second sidelink control information through PSCCH on resource x before resource y, and indicates resource y through the first to third information fields. Optionally, resource z is indicated by the network device or autonomously determined by the NR SL module of the first terminal device through resource listening. Optionally, resource x is indicated by the network device or autonomously determined by the LTE SL module of the first terminal device through resource listening. Optionally, the frequency domain widths of resources x, z and y are consistent. Optionally, resource z corresponds to one slot in the time domain. Optionally, resource x corresponds to one subframe in the time domain. It can be understood that the first sidelink control information transmitted on resource z also indicates resource z through the time resource assignment and frequency resource assignment fields, and the second sidelink control information transmitted on resource x also indicates resource x through the first to third information fields.

[0183] The Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resource.

[0184] Optionally, the Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resource by itself. For example, the first transmission resource includes resource y, and when the Uu module of the first terminal device has uplink data to be transmitted, resource y can be directly used for uplink transmission, or part of the time-frequency resources shaded in resource y can be used for uplink transmission.

[0185] Optionally, the Uu module of the first terminal device performs uplink transmission on all or part of the resources of the first transmission resource according to the indication of the second signaling transmitted by the network device. For example, the first transmission resource includes resource y, and when the Uu module of the first terminal device has uplink data to be transmitted, the network device can be sent a second request scheduling signaling such as SR and / or BSR, and the network device can schedule the Uu module of the first terminal device to use resource y or part of the time-frequency resources shaded in resource y for uplink transmission through the second signaling after receiving the second request scheduling signaling.

[0186] Embodiment 1 above is for a scenario of deploying NR SL under a future cellular network, Embodiment 2 is for a scenario of deploying LTE SL under a future cellular network, Embodiments 3 and 4 are for a scenario of simultaneously deploying NR SL and LTE SL under a future cellular network. Under the above three scenarios, the technical solutions provided in the present application can achieve the purpose of dynamically sharing the spectrum between UL and SL, avoid resource conflicts, and increase spectrum utilization.

[0187] In addition, the steps performed by the first terminal device in the above method embodiments can be implemented separately as a resource indication method on the first terminal device side, and the steps performed by the network device can be implemented separately as a resource indication method on the network device side.

[0188] The following is a device embodiment of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0189] Please refer to FIG. 21, which shows a block diagram of a resource indication device according to an embodiment of the present application. The device has the functions of implementing the above-mentioned method examples on the first terminal device side, which can be implemented by hardware or by hardware executing corresponding software. The device can be the first terminal device introduced above or can be arranged in the first terminal device. As shown in FIG. 21, the device 2100 can include a processing module 2110 and a sending module 2120.

[0190] The processing module 2110 is configured to determine a first transmission resource.

[0191] The sending module 2120 is configured to send sidelink control information indicating the first transmission resource.

[0192] The sending module 2120 is further configured to perform uplink transmission based on the first transmission resource.

[0193] In some embodiments, the first transmission resource is determined based on first signaling sent by a network device.

[0194] In some embodiments, the first signaling is used to indicate one or more groups of the first transmission resources.

[0195] In some embodiments, the first signaling contains at least one group of indication domains, each group of indication domains contains at least one indication domain, and each group of indication domains is used to indicate a group of the first transmission resources.

[0196] In some embodiments, the first transmission resource satisfies at least one of the following features: the first transmission resource comprises one or more sub-channels; the first transmission resource comprises one or more time units, and the time unit is a time slot or a subframe; the first transmission resource is a periodic resource.

[0197] In some embodiments, the period of the first transmission resource corresponds to one of a resource reservation period of sidelink communication.

[0198] In some embodiments, the sending module 2120 is configured to use a second transmission resource to send the sidelink control information indicating the first transmission resource, and a time domain position of the second transmission resource is located before a time domain position of the first transmission resource.

[0199] In some embodiments, the second transmission resource is indicated by a network device or autonomously determined by the first terminal device.

[0200] In some embodiments, the sending module 2120 is configured to use a resource in the first transmission resource to send the sidelink control information indicating the first transmission resource.

[0201] In some embodiments, the resource in the first transmission resource comprises a resource within a first N time units in the first transmission resource, and N is a positive integer.

[0202] In some embodiments, the sending module 2120 is configured to use all or part of the first transmission resource for uplink transmission.

[0203] In some embodiments, the resource used for the uplink transmission is autonomously determined by the first terminal device, or the resource used for the uplink transmission is indicated by a network device.

[0204] In some embodiments, as shown in FIG. 21, the apparatus 2100 further includes a receiving module 2130 configured to, in a case where the resource used for the uplink transmission is indicated by a network device, receive second signaling sent by the network device, and the second signaling is used to schedule the resource used for the uplink transmission.

[0205] In some embodiments, the sending module 2120 is further configured to send, to the network device, second request scheduling signaling used to request the network device to schedule the resource used for the uplink transmission for the first terminal device.

[0206] In some embodiments, the sidelink control information indicates the first transmission resource, and a priority value indicated in the sidelink control information is less than or equal to a priority threshold, the priority threshold being configured or preconfigured by a network device or predefined by a standard or depending on implementation of the first terminal device.

[0207] In some embodiments, the sidelink control information includes first sidelink control information and / or second sidelink control information, the first sidelink control information and the second sidelink control information being sidelink control information in two different communication systems.

[0208] In some embodiments, the first sidelink control information is sidelink control information in an NR system or a 5G system, and the second sidelink control information is sidelink control information in an LTE system or a 4G system or an E-UTRA system.

[0209] Please refer to FIG. 22, which shows a block diagram of a resource indication apparatus provided by another embodiment of the present application. The apparatus has the functions of implementing the above-mentioned method examples on the network device side, which can be implemented by hardware or by hardware executing corresponding software. The apparatus can be the network device introduced above or can be arranged in the network device. As shown in FIG. 22, the apparatus 2200 can include a sending module 2210.

[0210] The sending module 2210 is configured to send first signaling, the first signaling being used to indicate one or more groups of first transmission resources, the first transmission resources being used for uplink transmission.

[0211] In some embodiments, the first transmission resources are indicated by sidelink control information.

[0212] In some embodiments, the sidelink control information includes first sidelink control information and / or second sidelink control information, the first sidelink control information and the second sidelink control information being sidelink control information in two different communication systems.

[0213] In some embodiments, the first sidelink control information is sidelink control information in an NR system or a 5G system, and the second sidelink control information is sidelink control information in an LTE system or a 4G system or an E-UTRA system.

[0214] In some embodiments, the sending module 2210 is configured to send the first signaling when a CBR reported by a first terminal device is less than or equal to a first threshold.

[0215] In some embodiments, the first transmission resource satisfies at least one of the following features: the first transmission resource comprises one or more sub-channels; the first transmission resource comprises one or more time units, and the time unit is a time slot or a subframe; the first transmission resource is a periodic resource.

[0216] In some embodiments, the period of the first transmission resource corresponds to one of a resource reservation period of sidelink communication.

[0217] In some embodiments, the sending module 2210 is further configured to send second signaling for scheduling resources used by the uplink transmission.

[0218] In some embodiments, the resources used by the uplink transmission are all or part of the first transmission resources.

[0219] In some embodiments, as shown in FIG. 22, the apparatus 2200 further includes a receiving module 2220 configured to receive second request scheduling signaling sent by the first terminal device, the second request scheduling signaling being used to request the network device to schedule resources used by the uplink transmission for the first terminal device.

[0220] It should be noted that the apparatus provided by the above embodiments achieves its functions by means of the above division of functional modules, and in actual applications, the above functions can be completed by different functional modules according to actual needs, that is, the content structure of the apparatus is divided into different functional modules to complete all or part of the above-described functions.

[0221] As for the apparatus in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments of the method, and will not be described in detail here.

[0222] Please refer to FIG. 23, which shows a structural schematic diagram of a terminal device 2300 according to an embodiment of the present application. The terminal device 2300 can be used to execute the method steps performed by the first terminal device in the above embodiments. The terminal device 2300 can include a processor 2301, a transceiver 2302, and a memory 2303. The transceiver 2302 is configured to implement sending or receiving functions, such as the functions of the above-mentioned sending module 2120 and / or receiving module 2130. The processor 2301 can be configured to implement other processing functions or control sending and / or receiving, such as the functions of the above-mentioned processing module 2110.

[0223] The processor 2301 includes one or more processing cores. The processor 2301 performs various functional applications and information processing by running software programs and modules.

[0224] The transceiver 2302 can include a receiver and a transmitter, which can be implemented as a same wireless communication component, and can include a wireless communication chip and a radio frequency antenna.

[0225] The memory 2303 can be connected to the processor 2301 and the transceiver 2302.

[0226] The memory 2303 can be used to store a computer program executed by the processor 2301, and the processor 2301 is configured to execute the computer program to implement each step of the first terminal device in the above method embodiments.

[0227] In addition, the memory 2303 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memories, erasable programmable read-only memories, static random access memories, read-only memories, magnetic memories, flash memories, programmable read-only memories.

[0228] In some embodiments, the processor 2301 is configured to determine a first transmission resource, the transceiver 2302 is configured to send sidelink control information indicating the first transmission resource, and the transceiver 2302 is further configured to perform uplink transmission based on the first transmission resource.

[0229] For details not described above in the above embodiments, refer to the description in the method embodiments above, which will not be repeated here.

[0230] Please refer to FIG. 24, which shows a structural schematic diagram of a network device 2400 according to an embodiment of the present application. The network device 2400 can be used to perform the method steps performed by the network device in the above embodiments. The network device 2400 can include a processor 2401, a transceiver 2402 and a memory 2403. The transceiver 2402 is configured to implement the sending or receiving function, such as the function of the sending module 2210 and / or the receiving module 2220 described above, and the processor 2401 can be configured to implement other processing functions or control the sending and / or receiving.

[0231] The processor 2401 includes one or more processing cores, and the processor 2401 performs various functional applications and information processing by running software programs and modules.

[0232] The transceiver 2402 can include a receiver and a transmitter. For example, the transceiver 2402 can include a wired communication component that can include a wired communication chip and a wired interface (e.g., a fiber interface). Optionally, the transceiver 2402 can also include a wireless communication component that can include a wireless communication chip and a radio frequency antenna.

[0233] The memory 2403 can be connected to the processor 2401 and the transceiver 2402.

[0234] The memory 2403 can be used to store a computer program executed by the processor 2401, and the processor 2401 is configured to execute the computer program to implement the steps performed by the network device in the above method embodiments.

[0235] In addition, the memory 2403 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, including but not limited to: a magnetic or optical disk, an electrically erasable programmable read-only memory, an erasable programmable read-only memory, a static random access memory, a read-only memory, a magnetic storage, a flash memory, and a programmable read-only memory.

[0236] In some embodiments, the transceiver 2402 is configured to send first signaling, the first signaling being used to indicate one or more groups of first transmission resources, the first transmission resources being used for uplink transmission.

[0237] For details not described in the above embodiments, refer to the above embodiments, which will not be repeated here.

[0238] The embodiments of the present application also provide a computer readable storage medium, the storage medium stores a computer program, and the computer program is used by the processor to implement the above-mentioned resource indication method of the first terminal device side, or implement the above-mentioned resource indication method of the network device side. In some embodiments, the computer readable storage medium can include: a ROM (Read-Only Memory), a RAM (Random-Access Memory), a SSD (Solid State Drives) or an optical disk, etc. Among them, the random access memory can include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0239] The embodiments of the present application further provide a chip, which comprises a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the resource indication method on the side of the first terminal device or implement the resource indication method on the side of the network device.

[0240] The embodiments of the present application further provide a computer program product, which comprises computer instructions stored in a computer readable storage medium, and a processor reads and executes the computer instructions from the computer readable storage medium to implement the resource indication method on the side of the first terminal device or implement the resource indication method on the side of the network device.

[0241] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, indirect indication, or can represent an associated relationship. For example, A indicates B, which can mean that B can be obtained by A, or A indirectly indicates B, for example, A indicates C, and B can be obtained by C, or A and B have an associated relationship.

[0242] In the description of the embodiments of the present application, the term "corresponding" can represent a direct or indirect corresponding relationship between the two, can represent an associated relationship between the two, or can represent an indication and being indicated, configuration and being configured, and the like.

[0243] In some embodiments of the present application, "predefined" can be realized by pre-storing corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the specific implementation manner of the present application is not limited. For example, predefined can mean defined in a protocol.

[0244] In some embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, for example, can include LTE protocol, NR protocol and related protocols applied in future communication systems, and the present application is not limited thereto.

[0245] "Multiple" mentioned in the present text refers to two or more than two. "And / or" describes the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0246] "Greater than or equal to" mentioned in the present text can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0247] In addition, the step numbers described herein only exemplarily show a possible execution sequence between steps, and in some other embodiments, the above steps can also be executed in a sequence different from the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in a sequence opposite to the illustration, which is not limited in the embodiments of the present application.

[0248] Those skilled in the art can realize that, in one or more examples described above, the functions described in the embodiments of the present application can be implemented in hardware, software, firmware or any combination thereof. When implemented in software, the functions can be stored in a computer readable medium or transmitted as one or more instructions or codes on a computer readable medium. The computer readable medium includes computer storage medium and communication medium, and the communication medium includes any medium that facilitates the transfer of computer programs from one place to another. The storage medium can be any available medium accessible by a general or special purpose computer.

[0249] The above only describes exemplary embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A resource indication method, comprising: The method is performed by a first terminal device, and the method comprises: determining a first transmission resource; transmitting sidelink control information indicating the first transmission resource; performing uplink transmission based on the first transmission resource.

2. The method of claim 1, wherein, The first transmission resource is determined based on first signaling transmitted by a network device.

3. The method of claim 2, wherein, The first signaling is used to indicate one or more groups of the first transmission resource.

4. The method according to claim 2 or 3, characterized in that, The first signaling comprises at least one group of indication fields, each group of indication fields comprises at least one indication field, and each group of indication fields is used to indicate a group of the first transmission resource.

5. The method according to any one of claims 1 to 4, characterized in that, The first transmission resource satisfies at least one of the following characteristics: The first transmission resource comprises one or more sub-channels. The first transmission resource comprises one or more time units, and the time unit is a slot or a subframe. The first transmission resource is a periodic resource.

6. The method of claim 5, wherein, The period of the first transmission resource corresponds to one of the resource reservation periods of sidelink communication.

7. The method according to any one of claims 1 to 6, characterized in that, The transmission of the sidelink control information indicating the first transmission resource comprises: transmitting the sidelink control information indicating the first transmission resource using a second transmission resource, and the time domain position of the second transmission resource is located before the time domain position of the first transmission resource.

8. The method of claim 7, wherein, The second transmission resource is indicated by a network device or autonomously determined by the first terminal device.

9. The method according to any one of claims 1 to 6, characterized in that, The transmission of the sidelink control information indicating the first transmission resource comprises: transmitting the sidelink control information indicating the first transmission resource using a resource in the first transmission resource.

10. The method of claim 9, wherein, The resource in the first transmission resource comprises resources in the first N time units in the first transmission resource, and N is a positive integer.

11. The method according to any one of claims 1 to 10, characterized in that, The uplink transmission based on the first transmission resource comprises: performing uplink transmission using all or part of the transmission resources in the first transmission resource.

12. The method of any one of claims 1 to 11, wherein: the resource used for the uplink transmission is autonomously determined by the first terminal device; or the resource used for the uplink transmission is indicated by a network device.

13. The method of claim 12, wherein, In the case where the resource used for the uplink transmission is indicated by a network device, the method further comprises: receiving second signaling transmitted by the network device, and the second signaling is used to schedule the resource used for the uplink transmission.

14. The method of claim 13, wherein, The method further comprises: transmitting, to the network device, second request scheduling signaling, and the second request scheduling signaling is used to request the network device to schedule the resource used for the uplink transmission for the first terminal device.

15. The method according to any one of claims 1 to 14, characterized in that, When the sidelink control information indicates the first transmission resource, a priority value indicated in the sidelink control information is less than or equal to a priority threshold value, and the priority threshold value is configured or preconfigured by a network device or is pre-defined by a standard or depends on the implementation of the first terminal device.

16. The method according to any one of claims 1 to 15, characterized in that, The sidelink control information comprises first sidelink control information and / or second sidelink control information, and the first sidelink control information and the second sidelink control information are sidelink control information in two different communication systems.

17. The method of claim 16, wherein, The first sidelink control information is sidelink control information in a New Radio, NR, system or a 5G system, and the second sidelink control information is sidelink control information in a Long Term Evolution, LTE, system or a 4G system or an Evolved Universal Terrestrial Radio Access, E-UTRA, system.

18. A resource indication method, comprising: The method is performed by a network device, and the method comprises: sending first signaling, the first signaling being used for indicating one or more groups of first transmission resources, the first transmission resources being used for uplink transmission.

19. The method of claim 18, wherein, The first transmission resources are indicated by sidelink control information.

20. The method of claim 19, wherein, The sidelink control information comprises first sidelink control information and / or second sidelink control information, the first sidelink control information and the second sidelink control information being sidelink control information in two different communication systems.

21. The method of claim 20, wherein, The first sidelink control information is sidelink control information in a New Radio, NR, system or a 5G system, and the second sidelink control information is sidelink control information in a Long Term Evolution, LTE, system or a 4G system or an Evolved Universal Terrestrial Radio Access, E-UTRA, system.

22. The method according to any one of claims 18 to 21, characterized in that, The sending of the first signaling comprises: When a channel busy ratio, CBR, reported by a first terminal device is less than or equal to a first threshold value, the first signaling is sent.

23. The method according to any one of claims 18 to 22, characterized in that, The first transmission resources satisfy at least one of the following features: The first transmission resources comprise one or more sub-channels. The first transmission resources comprise one or more time units, the time units being slots or subframes. The first transmission resources are periodic resources.

24. The method of claim 23, wherein, A period of the first transmission resources corresponds to one of resource reservation periods of sidelink communication.

25. The method according to any one of claims 18 to 24, characterized in that, The method further comprises: sending second signaling, the second signaling being used for scheduling resources used for uplink transmission.

26. The method of claim 25, wherein, The resources used for uplink transmission are all or part of the first transmission resources.

27. The method of claim 25 or 26, wherein, Before the sending of the second signaling, the method further comprises: receiving second request scheduling signaling sent by a first terminal device, the second request scheduling signaling being used for requesting the network device to schedule resources used for the uplink transmission for the first terminal device.

28. A resource indication apparatus, comprising: The apparatus comprises: a processing module configured to determine first transmission resources; a sending module configured to send sidelink control information indicating the first transmission resources; The sending module is further configured to perform uplink transmission based on the first transmission resources.

29. A resource indication apparatus, comprising: The apparatus comprises: a sending module configured to send first signaling, the first signaling being used for indicating one or more groups of first transmission resources, the first transmission resources being used for uplink transmission.

30. A terminal device, comprising: The terminal device comprises a processor and a memory, the memory storing a computer program, and the processor executes the computer program to implement the method according to any one of claims 1 to 17.

31. A network device, comprising: The network device comprises a processor and a memory, the memory storing a computer program, and the processor executes the computer program to implement the method according to any one of claims 18 to 27.

32. A computer-readable storage medium, comprising: The storage medium stores a computer program, and the computer program is used for being executed by a processor to implement the method according to any one of claims 1 to 17 or to implement the method according to any one of claims 18 to 27.

33. A chip, characterized by The chip comprises programmable logic circuitry and / or program instructions for implementing the method of any one of claims 1 to 17, or for implementing the method of any one of claims 18 to 27, when the chip is in operation.

34. A computer program product, characterised in that, The computer program product comprises computer instructions stored in a computer-readable storage medium, which are read and executed by a processor to implement the method of any one of claims 1 to 17, or to implement the method of any one of claims 18 to 27.

Images