WO2023279390A1 - Resource indication method and apparatus, and terminal device - Google Patents

Abstract

An embodiment of the present application provides a resource indication method and apparatus, and a terminal device. The method comprises: a first terminal device sends first sidelink control information. The first sidelink control information is used for indicating at least one time-frequency resource within a first time range. At least part of multiple time units included in the first time range are mini-slots.

Description

A resource indication method and device, and terminal equipment technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular to a resource indication method and device, terminal equipment, and network equipment.

Background technique

In order to support ultra-reliable and low-latency communication (Ultra reliability and low latency communication, URLLC) related services, micro time slot. Wherein, the mini-slot may include at least one transmission symbol, and the total number of transmission symbols included is smaller than the total number of transmission symbols included in the time slot. The introduction of mini-slots can make the scheduling of uplink and downlink more flexible, and at the same time reduce the time delay, so as to realize URLLC-related services.

At present, the resource allocation of the side link (Side Link, SL) transmission technology is performed in units of time slots. When introducing mini-slots into the SL transmission technology, there is currently no clear method for how to perform resource indication.

Contents of the invention

Embodiments of the present application provide a resource indication method and device, and a terminal device.

An embodiment of the present application provides a resource indication method, the method comprising: a first terminal device sends first sidelink control information; the first sidelink control information is used to indicate at least one time-frequency resource within a first time range; At least some of the multiple time units included in the first time range are mini-slots.

An embodiment of the present application provides a method for indicating resources, the method comprising: a second terminal device receiving first sidelink control information, where the first sidelink control information is used to indicate at least one time-frequency resource within a first time range; At least some of the multiple time units included in the first time range are mini-slots.

The embodiment of the present application also provides a resource indicating device, which is applied to a first terminal device, and the device includes:

The sending unit is configured to send first sideline control information; the first sideline control information is used to indicate at least one time-frequency resource within a first time range; at least one of the multiple time units included in the first time range Some time units are mini-slots.

An embodiment of the present application also provides a resource indication device, which is applied to a second terminal device, and the device includes:

The receiving unit is configured to receive first sideline control information, where the first sideline control information is used to indicate at least one time-frequency resource within a first time range; at least one of the multiple time units included in the first time range Some time units are mini-slots.

The terminal device provided in this embodiment of the present application may be the first terminal device in the above solution or the second terminal device in the above solution, and the communication device includes a processor and a memory. The memory is used for storing computer programs, and the processor is used for invoking and running the computer programs stored in the memory, and executing the above resource indication method.

The chip provided by the embodiment of the present application is used to implement the above resource indication method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above resource indication method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program causes a computer to execute the above resource indication method.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above resource indication method.

The computer program provided by the embodiment of the present application, when running on a computer, enables the computer to execute the above resource indication method.

Through the above technical solution, the first terminal device can send the first sideline control information; indicate at least one time-frequency resource within the first time range through the first sideline control information; and, the multiple time units included in the first time range At least some of the time units are mini-slots. That is to say, the first terminal device can use the first sideline control information to indicate the time-frequency resources in the first time range including the mini-slot, so that the existing SL mechanism can be applied to the SL communication system configured with the mini-slot .

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

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

FIG. 2A is a first schematic diagram of a sidelink transmission mode provided by an embodiment of the present application;

FIG. 2B is a second schematic diagram of a sidelink transmission mode provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a sidelink time slot structure provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of an exemplary resource indication provided by an embodiment of the present application;

FIG. 5A is a first schematic diagram of a micro-slot structure provided by an embodiment of the present application;

FIG. 5B is a second schematic diagram of a mini-slot structure provided by the embodiment of the present application;

FIG. 5C is a third schematic diagram of a micro-slot structure provided by the embodiment of the present application;

FIG. 6 is a schematic flowchart of a resource indication method provided by an embodiment of the present application;

FIG. 7A is a first schematic diagram of a resource indication scenario provided by an embodiment of the present application;

FIG. 7B is a second schematic diagram of a resource indication scenario provided by an embodiment of the present application;

FIG. 7C is a schematic diagram of a resource indication scenario 3 provided by the embodiment of the present application;

FIG. 8 is a first structural schematic diagram of a resource indication device provided by an embodiment of the present application;

FIG. 9 is a second structural schematic diagram of a resource indication device provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 11 is a schematic structural diagram of a chip according to an embodiment of the present application;

Fig. 12 is a schematic block diagram of a communication system provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be understood that the technical solutions of the embodiments of the present application can be applied to any communication system supporting SL communication, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution, LTE-A) system, Universal Mobile Telecommunication System (UMTS), fifth generation (5th generation, 5G) mobile communication system, new air interface (New Radio, NR) system and other next-generation communication systems, etc. .

FIG. 1 is a schematic diagram of an exemplary network architecture provided by an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a network device and multiple terminal devices, for example, may include a network device 101 , and a terminal device 102 and a terminal device 103 .

In the communication system 100 shown in FIG. 1 , the network device 101 may be an access network device that communicates with the terminal device 102 and the terminal device 103 . The access network device can provide communication coverage for a specific geographical area, and can communicate with the terminal device 102 and the terminal device 103 located in the coverage area. In addition, direct communication between the terminal device 102 and the terminal device 103 may be performed through the SL communication technology.

Among them, the network device can be an evolved base station (Evolutional Node B, eNB or eNodeB) in the LTE system, or a next-generation radio access network (Next Generation Radio Access Network, NG RAN) device, or a base station in the NR system (gNB), or the wireless controller in the cloud radio access network (Cloud Radio Access Network, CRAN), or the network device can be a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge , routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal device may be any terminal device, including but not limited to a terminal device that is wired or wirelessly connected to a network device or other terminal devices.

For example, the terminal equipment may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device , User Agent, or User Device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This embodiment of the present application does not limit it.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used by pre-saving corresponding codes, tables or other It is implemented by indicating related information, and this application does not limit the specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

Before further describing the embodiments of the present application in detail, the nouns and terms involved in the embodiments of the present application are described, and the nouns and terms involved in the embodiments of the present application are applicable to the following explanations.

Sidelink (Sidelink, SL): Unlike the traditional cellular system in which communication data is received or sent through the base station, communication data in the sidelink can be directly communicated between devices and has a higher frequency spectrum efficiency and lower transmission delay. Referring to the schematic diagrams of sidelink transmission modes shown in FIG. 2A and FIG. 2B , the 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) defines two sidelink transmission modes: mode A and mode B.

Mode A: as shown in FIG. 2A , the transmission resource of the terminal device is allocated by a network device (such as a base station). The network device can allocate resources to each terminal device through the downlink. In this way, the terminal device sends data on the sidelink according to the resources allocated by the network device; wherein, the network device can allocate resources for a single transmission to the terminal device, and can also allocate resources for semi-static transmission to the terminal device.

Mode B: Referring to FIG. 2B , the terminal device can select a resource from the resource pool to transmit communication data. Specifically, the terminal device may select transmission resources from the resource pool by listening, or select transmission resources from the resource pool by random selection.

It should be noted that, in FIG. 2A and FIG. 2B , only Vehicle-to-Vehicle (Vehicle-to-Vehicle, V2V) communication is taken as an example, and the SL technology can be applied to scenarios where various terminal devices directly communicate. In other words, the terminal device in this embodiment of the present application refers to any terminal device that communicates using the SL technology.

The time slot structure of the side link: refer to the schematic diagram of an exemplary SL time slot structure shown in FIG. 3 , the time slot structure includes 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols. Among them, the first OFDM symbol is an automatic gain control (Automatic Gain Control, AGC) symbol. When the terminal device receives data, the receiving power of the terminal device can be adjusted through the AGC symbol, so that the adjusted power is suitable for demodulation . When the terminal device sends data, the data sent on the AGC symbol is consistent with the content in a symbol after the AGC symbol. In addition, in FIG. 3, the Physical Sidelink Control Channel (PSCCH) is used to carry the first sidelink control information (Sidelink Control Information, SCI), and the first SCI mainly includes domains related to resource indication. A Physical Sidelink Shared Channel (PSSCH) is used to carry data and a second SCI, and the second SCI mainly includes fields related to data demodulation. In a certain time slot, there may also be a symbol corresponding to a Physical Sidelink Feedback Channel (PSFCH), and the PSFCH is used to transmit Hybrid Automatic Repeat request ACK (HARQ-ACK) information. The symbols corresponding to the PSFCH may appear once every 1, 2 or 4 time slots, and the number of occurrences of the symbols corresponding to the PSFCH depends on the configuration of the resource pool. A symbol preceding the symbol corresponding to PSFCH may be an AGC symbol for receiving PSFCH. Usually, the last symbol in a time slot is a GP symbol, namely GAP. In other words, the symbol next to the last symbol carrying the PSSCH or PSFCH is a GP symbol. The terminal equipment performs transceiving conversion within the GP symbol and does not transmit. Referring to FIG. 3 , when there are PSFCH resources in the time slot, there are also GP symbols between the symbols of PSSCH and PSFCH. This is because the terminal equipment may transmit on the PSSCH and receive on the PSFCH, which also requires GP symbols to perform transceiving conversion.

It should be noted that, referring to FIG. 3, when there is no symbol corresponding to PSFCH in the time slot, the GAP symbol between PSSCH and PSFCH in FIG. 3, the AGC symbol for receiving PSFCH, and the PSFCH symbol can all be used to carry PSSCH. It can be seen from FIG. 3 that the PSCCH and its scheduled corresponding PSSCH are sent in the same time slot.

Sidelink resource indication: In SL, the terminal device can send the first SCI in the PSCCH, and indicate the time-frequency resource selected by it through the first SCI. In SL, it supports resource indication within a data transmission block (Transport Block, TB) and also supports resource indication between TBs.

In some embodiments, the first SCI includes a time domain resource allocation (ie, Time resource assignment) indication field and a frequency domain resource allocation (ie, Frequency resource assignment) indication field, and these two indication fields are used to indicate the current transmitted TB N time-frequency resources (including time-frequency resources currently used for sending). Where N is less than or equal to N _max , and in SL, N _max is equal to 2 or 3, limited by the number of information bits used for resource indication in the first SCI.

It should be noted that the N time-frequency resources indicated by the first SCI may be distributed in W logical time slots. In SL, W is equal to 32. Generally speaking, a physical time slot refers to a time slot that is continuous in time, while the logical time slot involved in the embodiment of the present application is a concept relative to a physical time slot, and a logical time slot may be a time slot that is discontinuous in physical time. Exemplarily, assuming that there are 10 physical time slots, but only 5 of the 10 physical time slots belong to the resource pool used by the terminal device, the number of logical time slots is 5. It can be understood that being distributed within 32 logical time slots means that the time domain interval between the indicated resources is less than 32 logical time slots.

As an example, refer to a schematic diagram of an exemplary resource indication shown in FIG. 4 . For TB1, the first SCI sent by the terminal device in the initial transmission PSCCH indicates the time-frequency resource positions of the initial transmission, retransmission 1 and retransmission 2 through the first SCI, that is, the time and frequency of retransmission 1 and retransmission 2 are reserved resource. The initial transmission, retransmission 1 and retransmission 2 are distributed in 32 logical time slots in the time domain.

In order to make the first SCI sent by the terminal device indicate as many time-frequency resources as possible, so that other terminal devices can know its reserved resources and avoid resource collision through resource exclusion, N=min(N _select , N _max ) can be set. Wherein, N _select is the number of time-frequency resources selected by the terminal device in the backward 32 logical time slots including the current transmission resource. For example, in Figure 4, for TB1, assuming that N _max is equal to 3, after the terminal device completes resource selection, if the time-frequency resources of retransmission 1 and retransmission 2 in the time domain are both greater than 32 logical time slots from the initial transmission, then the When N _select =1. That is, the terminal device only indicates the time-frequency resource initially transmitted in the first SCI initially transmitted. Conversely, if after resource selection, retransmission 1 is within 32 logical time slots from the initial transmission in the time domain, that is, starting from the time domain position of the initial transmission, the backward 32 logical time slots include the initial transmission, retransmission When the transmission resource of 1 is transmitted, N _select is equal to 2, and N is equal to 2. In this way, the terminal device indicates the time-frequency resources of initial transmission and retransmission 1 in the first SCI of initial transmission.

In some embodiments, the first SCI sent by the terminal device may also include a resource reservation period (that is, Resource reservation period) indication field. The indication field is used to reserve time-frequency resources in the next time period, and the time-frequency resources in the next time period will be used for transmission of another TB.

For example, referring to an exemplary resource indication schematic diagram shown in FIG. 4, for TB1, the first SCI sent by the terminal device in the PSCCH of the initial transmission indicates the time and frequency of the initial transmission, retransmission 1 and retransmission 2 Resource location, denoted as {(t ₁ ,f ₁ ),(t ₂ ,f ₂ ),(t ₃ ,f ₃ )}. Where t ₁ , t ₂ , and t ₃ are the time domain positions of the initial transmission, retransmission 1, and retransmission 2, respectively. f ₁ , f ₂ , and f ₃ are frequency domain positions of corresponding resources, respectively. If the value of the resource reservation period indication field in the first SCI corresponds to 100, it means that the time-frequency resource of the next period {(t ₁ +100,f ₁ ),(t ₂ +100, f ₂ ), (t ₃ +100, f ₃ )} and these three resources will be used for the initial transmission of TB 2, the transmission of retransmission 1 and retransmission 2 respectively. In SL, the value of the resource reservation period indication field is more flexible, and can be one of 0, 1-99, 100, 200, ..., 1000 milliseconds. In each resource pool, you can configure a maximum of 16 values.

Mini-slot: In the NR system, the time-domain resource of a time slot is further divided by introducing a mini-slot. Exemplarily, a mini-slot may include at least one transmission symbol (such as an OFDM symbol), and the total number of transmission symbols included in the mini-slot is smaller than the total number of transmission symbols included in the time slot.

Referring to the schematic diagrams of the mini-slot structure shown in FIG. 5A to FIG. 5C , a time slot can be divided into different mini-slots, and different mini-slots can carry different information. in,

In Figure 5A, the PDCCH located at the head of the slot can schedule both the PDSCH contained in mini-slot 1 located in the same slot, and the PUSCH contained in mini-slot 2 located at the end of the slot, so that Fast scheduling of uplink and downlink data in time slots;

In Figure 5B, the mini-slot 1 carrying the PDCCH can be located anywhere in the time slot, so that when the transmission of the data channel needs to be urgently scheduled in the middle and rear of the time slot, the PDCCH can also be sent at any time, using the remaining time domain at the end of the time slot Resource, scheduling a mini-slot 2 including PDSCH;

In Figure 5C, after mini-slot 1 transmits PDSCH, as long as there are enough time-domain resources, a mini-slot 2 for PUCCH transmission can be scheduled at the end of the slot to carry the HARQ-ACK information of PDSCH, so as to achieve Fast HARQ-ACK feedback within one slot.

It can be seen that, as a scheduling unit smaller than a time slot, a mini-slot can make uplink and downlink resource scheduling more flexible, and at the same time can reduce time delay.

Currently, the resource indication of the SL transmission technology is performed in units of time slots. When mini-slots are introduced into the SL transmission technology, there is no definite method for how to perform resource indication.

Based on this, an embodiment of the present application provides a resource indication method, specifically, the first terminal device may send first sidelink control information; indicate at least one time-frequency resource within the first time range through the first sidelink control information; and , at least some of the multiple time units included in the first time range are mini-slots. That is to say, the first terminal device can use the first sideline control information to indicate the time-frequency resources in the first time range including the mini-slot, so that the existing SL mechanism can be applied to the SL communication system configured with the mini-slot .

It should be noted that the time-frequency resources, selected time-frequency resources, or resources in the embodiments of the present application all refer to the PSCCH and its scheduled PSSCH resources. Optionally, the PSSCH scheduled by the PSCCH refers to the PSSCH scheduled by the PSCCH and sent by the same terminal device in the same time unit as the PSCCH.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following contents.

An embodiment of the present application provides a resource indication method. Referring to the schematic flowchart of the resource indication method shown in FIG. 6, the method may include the following steps:

FIG. 6 is a schematic flowchart of a resource indication method 600 provided by an embodiment of the present application. As shown in FIG. 6 , the method 600 includes the following contents.

Step 610, the first terminal device sends the first sideline control information; the first sideline control information is used to indicate at least one time-frequency resource within the first time range; at least part of the time units in the multiple time units included in the first time range for the mini-slot.

Step 620, the second terminal device receives the first sidelink control information.

Here, communication between the first terminal device and the second terminal device may be performed through SL technology, and the first terminal device and the second terminal device may be the terminal devices shown in FIG. 1 . Exemplarily, when the first terminal device is the terminal device 101, the second terminal device is the terminal device 102; when the first terminal device is the terminal device 102, the second terminal device is the terminal device 101.

In some embodiments, the first terminal device may send the first sidelink control information, that is, the first SCI, to other devices (that is, the second terminal device). The first terminal device may indicate at least one time-frequency resource to other terminal devices through the first SCI.

Exemplarily, the first terminal device may send the first SCI to the second terminal device in a broadcast manner, or send the first SCI to the second terminal device in a unicast manner, which is not limited in this embodiment of the present application.

It should be noted that the number of second terminal devices may include one or more, which is not limited in this embodiment of the present application.

In some embodiments, the second terminal device may serve as a resource monitoring device, and perform resource selection according to the monitoring result. The second terminal device may receive the first SCI sent by the first terminal device. In this way, the second terminal device may determine at least one time-frequency resource indicated by the first terminal device according to the decoding result of the first SCI. Furthermore, the second terminal device performs resource exclusion according to the time-frequency resource indicated by the first SCI, so as to avoid resource collision.

Wherein, the at least one time-frequency resource indicated by the first SCI may be a time-frequency resource within the first time range. That is to say, the time-domain position of each time-frequency resource in the at least one time-frequency resource is within the first time range.

In some embodiments, the first time range may include a plurality of time units. Here, the time unit is the basic scheduling unit in the time domain, and the time unit may be a time slot, a mini-slot, or a unit composed of multiple transmission symbols, which is not limited in this embodiment of the present application.

In some embodiments, at least some of the multiple time units included in the first time range are mini-slots. It can be understood that the first time range includes at least mini-slots. Exemplarily, the first time range may only include mini-slots, or the first time range may also include mini-slots and time slots.

It can be understood that the at least one time-frequency resource indicated by the first SCI may be a time-frequency resource corresponding to at least one time unit within the first time range. Wherein, at least one time-frequency resource is in one-to-one correspondence with at least one time unit.

That is to say, the first terminal device can use the first SCI to indicate the time-frequency resources within the first time range including the mini-slot, so that the first terminal device can perform data transmission through the mini-slot, so that the existing SL mechanism It can be applied to the SL communication system configured with mini-slots, and at the same time, the flexibility of SL resource scheduling is improved, and the SL reduces data transmission delay.

In an embodiment of the present application, the first time range may include multiple time units starting from the first time unit.

Here, the first time range may include the first time unit.

It should be noted that the multiple time units included in the first time range in the embodiment of the present application may be physically continuous time units or physically discontinuous time units, which is not limited in the embodiment of the present application.

In a possible implementation manner, the first time range may include multiple consecutive time units starting from the first time unit.

Here, the multiple time units included in the first time range are physically continuous time units.

Exemplarily, the first time range may include a plurality of consecutive mini-slots starting from the first time unit, or a plurality of consecutive time slots and mini-slots starting from the first time unit.

Referring to Fig. 7A, all the time slots in Fig. 7A are physically continuous time slots, wherein each time slot in Fig. 7A includes two mini-slots, and the first time range may start from the first time unit 20 consecutive mini-slots. Referring to Fig. 7B, all the time slots in Fig. 7B are physically continuous time slots, wherein, some of the time slots in Fig. 7B include two mini-slots, and the first time range may be continuous from the first time unit 15 slots and mini-slots.

In another possible implementation manner, the multiple time units included in the first time range may be time units in the first resource pool. That is, the first time range may include a plurality of consecutive time units starting from the first time unit in the first resource pool.

Here, the multiple time units included in the first time range are distributed in the first resource pool, and the multiple time units may not be physically continuous.

In some embodiments, the first resource pool may be any resource pool among one or more resource pools configured or preconfigured by the network device to the first terminal device.

In some embodiments, the first resource pool may be a resource pool used by the first terminal device among one or more resource pools configured or preconfigured by the network device to the first terminal device.

In some embodiments, the resource pool used by the first terminal device may be a sending resource pool and/or a receiving resource pool used by the first terminal device.

In some embodiments, the resource pool used by the first terminal device is the resource pool used by the first terminal device to send the first SCI.

Exemplarily, the first time range may include multiple mini-slots starting from the first time unit in the first resource pool, or the first time range may include, starting from the first time unit in the first resource pool Multiple minislots and timeslots.

In some embodiments, whether the first time range includes mini-slots, or both time slots and mini-slots needs to be determined according to the configuration of the first resource pool.

Referring to the schematic diagram of the resource indication scenario shown in FIG. 7A, all the time slots in FIG. 7A are time slots in the first resource pool used by the first terminal device, and each time slot in the first resource pool is configured as 2 mini-slots. Wherein, the first time range may be 20 consecutive mini-slots starting from the first time unit in the first resource pool.

Referring to the schematic diagram of the resource indication scenario shown in FIG. 7B, all the time slots in FIG. 7B are time slots in the first resource pool used by the first terminal device, and some time slots in the first resource pool are configured as micro-time slots. slots, wherein one of every two slots in the first resource pool is configured as two mini-slots. In FIG. 7B , the first time range may be 15 consecutive mini-slots and time slots starting from the first time unit in the first resource pool.

That is to say, both time slots and mini-slots are configured in the first resource pool, and the first time range may include time slots and mini-slots.

In some embodiments, when the first resource pool includes mini-slots and timeslots, the first time range may only include mini-slots. Optionally, the first terminal device may determine the time unit type included in the first time range according to the actual configuration of the first resource pool.

Referring to the schematic diagram of the resource indication scenario shown in FIG. 7C, all the time slots in FIG. 7C are time slots in the first resource pool used by the first terminal device, and some time slots in the first resource pool are configured as micro-time slots. slots, wherein one of every two slots in the first resource pool is configured as two mini-slots. In FIG. 7C , the first time range may be 10 consecutive mini-slots starting from the first time unit in the first resource pool.

That is to say, in the case where both time slots and mini-slots are configured in the first resource pool, the first time range may only include mini-slots.

It can be seen that the first time range provided by the embodiment of the present application can have various types, and the first terminal device can indicate the time-frequency resources in the first resource pool configured with mini-slots through the first SCI, so that the current The SL mechanism is applicable to resource pools configured with mini-slots or SL communication systems configured with mini-slots, which expands the application scenarios of SL.

In some embodiments, the first time unit is a time unit for sending the first SCI by the first terminal device. Exemplarily, the first time unit may be a time slot for the first terminal device to send the first SCI, or a mini-slot.

Exemplarily, referring to the schematic diagram of a resource indication scenario shown in FIG. 7A , each time slot in FIG. 7A is configured as 2 mini-slots. The first terminal device sends the first SCI in the mini-slot where the time-frequency resource 1 is located, and the first time unit is the mini-slot where the time-frequency resource 1 is located. Referring to the schematic diagrams of resource indication scenarios shown in FIG. 7B and FIG. 7C , one of every two time slots in FIG. 7B and FIG. 7C is configured as two mini-slots. The first terminal device sends the first SCI in the mini-slot where the time-frequency resource 1 is located, and the first time unit is the mini-slot where the time-frequency resource 1 is located.

It can be understood that the first terminal device sends the first SCI in the first time unit. In this way, the second terminal receiving the first SCI can determine the first time range according to the time unit of receiving the first SCI, so as to determine the time-frequency resource indicated by the first terminal device from the first time range.

In this embodiment of the present application, the first time range may include multiple time units. Here, M is used to represent the number of multiple time units, and M is an integer greater than 1.

Wherein, the number M of time units included in the first time range may be determined in different ways. In some embodiments, M can be determined based on any of the following:

Determined based on pre-configured information;

Determined based on network configuration information;

Determined based on the preset values stipulated in the standard.

In some embodiments, the first terminal device may determine the value of M according to pre-configuration information. Exemplarily, the first terminal device may read pre-configuration information pre-stored in the local chip, and determine the value of M based on the pre-configuration information. Wherein, the pre-configuration information may indicate that the value of M is 31 or 32.

In some embodiments, the first terminal device may also receive network configuration information sent by the network device, and determine the value of M according to the network configuration information. Wherein, the network configuration information may configure the value of M to be 31 or 32.

Here, the network configuration information may be carried in dedicated signaling or resource pool configuration information, which is not limited in this application.

In some embodiments, the value of M may also be a preset value specified in the standard, and the first terminal device may determine the value of M according to the preset value specified in the standard protocol. Here, the value of M can be 31 or 32.

It should be noted that M can be configured or pre-configured in units of resource pools. Exemplarily, the value of M corresponding to the first resource pool is configured by configuring or pre-configuring the first resource pool. When the first terminal device determines to use the first resource pool, a value of M corresponding to the first resource pool may be determined, so as to obtain the first time range.

Exemplarily, the first terminal device may receive resource pool configuration information sent by the network device, where the resource pool configuration information is used to configure the first resource pool. Wherein, the resource pool configuration information may include third indication information, and the third indication information is used to indicate M.

Based on this, the first terminal device may determine the number of time units included in the first time range in different ways. The first terminal device may determine the first time range based on the number of time units included in the first time range and the time domain position of the first time unit. Correspondingly, the second terminal device may also determine the first time range based on this.

Exemplarily, referring to the schematic diagram of the resource indication scenario shown in FIG. 7A, the first time unit is the mini-slot where the time-frequency resource 1 is located, and when M is 20, the first time range is from the time-frequency resource 1. The mini-slot starts with 20 consecutive mini-slots. Referring to the schematic diagram of the resource indication scenario shown in FIG. 7B, the first time unit is the mini-slot where the time-frequency resource 1 is located, and when M is 15, the first time range is the mini-slot where the time-frequency resource 1 is located. Start with 15 consecutive slots and mini-slots. Referring to the schematic diagram of the resource indication scenario shown in Figure 7C, the first time unit is the mini-slot where the time-frequency resource 1 is located, and when M is 10, the first time range is the mini-slot where the time-frequency resource 1 is located Start with 10 consecutive minislots.

Based on the foregoing embodiments, the first SCI may indicate at least one time-frequency resource, that is, the first SCI may indicate one or more time-frequency resources. Here, N is used to represent the quantity of at least one time-frequency resource, and N is an integer greater than or equal to 1.

In an embodiment of the present application, the number N of at least one time-frequency resource indicated by the first SCI may be determined in the following manner:

The number N of at least one time-frequency resource is the minimum value of the first parameter N1 and the second parameter N2; both N1 and N2 are integers greater than or equal to 1;

The first parameter N1 is the total number of time-frequency resources selected by the first terminal device within the first time range; the second parameter N2 is the maximum value of time-frequency resources that can be indicated by the first SCI.

That is to say, the quantity N=min(N1, N2) of the at least one time-frequency resource indicated by the first SCI, and min() is the minimum value of the two.

Wherein, N1 is the total number of time-frequency resources selected by the first terminal equipment UE1 within the first time range.

In some embodiments, the time-frequency resources selected by the first terminal device are resources selected for the same TB, the same Mac PDU, the same HARQ process, or the same data. That is to say, the time-frequency resource selected by the first terminal device within the first time range is used for the same TB, the same Media Access Control (Media Access Control, MAC) Protocol Data Unit (Protocol Data Unit, PDU), the same HARQ process, or transfer of the same data.

It should be noted that the time-frequency resources selected by the first terminal device include the PSCCH used for sending the first SCI and the PSSCH resource scheduled by it.

Wherein, N2 is the maximum value of time-frequency resources that can be indicated by the first SCI sent by the first terminal device.

In some embodiments, N2 is the maximum value of time-frequency resources of the same TB, the same MAC PDU, the same HARQ process, or the same data that can be indicated by the first SCI sent by the first terminal device.

It should be understood that the N time-frequency resources are the N time-frequency resources located at the front of the time domain positions selected by the first terminal device within the first time range. For example, in the first time range, there may be many time-frequency resources selected by the first terminal device (greater than N), but due to the limitation of the number of bits of the first SCI, the first SCI can only indicate N time-frequency resources . Therefore, the N time-frequency resources are the first N time-frequency resources selected by the first terminal device.

Exemplarily, as shown in FIG. 7A to FIG. 7C , the first terminal device has selected four time-frequency resources for the same TB in the first time range, including the time-frequency resource 1 used by the first terminal device to send the first SCI , that is, N1=4. In the case that the maximum value of time-frequency resources that can be indicated by the first SCI is 3, that is, N2=3, the first terminal device may determine that the number N of time-frequency resources indicated in the first SCI is 3. Therefore, the first terminal device sends the first SCI in time-frequency resource 1 to indicate the first three selected time-frequency resources within the first time range, namely frequency resource 1, time-frequency resource 2, and time-frequency resource 3.

In some embodiments, the first SCI includes first indication information, and the first indication information is used to indicate a time-domain position of at least one time-frequency resource.

It can be understood that the first terminal device may indicate the time-domain position of the at least one time-frequency resource within the first time range by using the first indication information in the first SCI. Exemplarily, the first indication information may be the information carried in the time domain resource allocation indication (ie Time resource assignment) field in the first SCI.

In some embodiments, the first terminal device may indicate the time domain position of the at least one time-frequency resource by using the offset of the at least one time-frequency resource relative to the first time unit.

That is to say, the first indication information may include an offset of the at least one time-frequency resource relative to the first time unit.

In some embodiments, the offset corresponds to at least one of:

The number of mini-slots of at least one time-frequency resource relative to the first time unit;

the number of mini-slots and time slots of the at least one time-frequency resource relative to the first time unit;

In the first resource pool, the number of mini-slots of at least one time-frequency resource relative to the first time unit;

In the first resource pool, the number of mini-slots and time slots of at least one time-frequency resource relative to the first time unit.

It can be understood that the offset may be the number of mini-slots between at least one time-frequency resource and the first time unit, or the number of mini-slots and timeslots between at least one time-frequency resource and the first time unit, or at least The number of mini-slots belonging to the first resource pool separated by one time-frequency resource from the first time unit, or the number of mini-slots and timeslots belonging to the first resource pool separated by at least one time-frequency resource from the first time unit.

In some embodiments, the first resource pool may be any resource pool among one or more resource pools configured or preconfigured by the network device to the first terminal device.

In some embodiments, the first resource pool may be a resource pool used by the first terminal device among one or more resource pools configured or preconfigured by the network device to the first terminal device.

In some embodiments, the resource pool used by the first terminal device may be a sending resource pool and/or a receiving resource pool used by the first terminal device.

In some embodiments, the resource pool used by the first terminal device is the resource pool used by the first terminal device to send the first SCI.

In this way, the time-domain position of at least one time-frequency resource in the embodiment of the present application may be determined based on the time-domain position and/or offset of the first time unit.

That is to say, the first indication information may include an offset of a time-domain position of each time-frequency resource in the at least one time-frequency resource relative to the first time unit. Therefore, after receiving the first indication information, the second terminal device can determine the indication of the first terminal device according to the time domain position of the first time unit and the offset between each time-frequency resource and the first time unit. time-frequency resources.

It should be noted that when the first SCI indicates N time-frequency resources, only N-1 offsets may be carried in the first indication information. For example, the first terminal device sends the first SCI in the first time unit. It can be understood that the first terminal device indicates the time domain position of the first time-frequency resource in the time domain by default. In this case, the first indication information can be Only need to carry N-1 time-domain offsets, the first indication information can simultaneously indicate the time-domain positions of the remaining N-1 time-frequency resources through the N-1 time-domain offsets, so through N-1 time-domain offsets to indicate the time-domain positions of the N time-frequency resources. Correspondingly, according to the time unit of receiving the first SCI, the second terminal device can determine the time domain position of the first time-frequency resource in the time domain indicated by the first SCI, and use the N- With 1 time domain offset, the time domain positions of the remaining N-1 time-frequency resources can be determined. In this way, the time domain positions of N time-frequency resources can be obtained through N-1 offsets.

Exemplarily, referring to the schematic diagram of a resource indication scenario shown in FIG. 7A, all time slots in 7A are time slots in the first resource pool used by the first terminal device, and each time slot in the first resource pool is used by Configured as 2 minislots. The first SCI may indicate time-frequency resource 1, time-frequency resource 2, and time-frequency resource 3 within the first time range. The first SCI is sent on the time-frequency resource 1, so the first indication information may only indicate the time-domain positions of the above three time-frequency resources through two offsets. Specifically, the first terminal device may indicate the time-domain positions of the time-frequency resource 1, the time-frequency resource 2, and the time-frequency resource 3 according to the offset 1 and the offset 2. The offset 1 is the time domain offset of the time-frequency resource 2 relative to the first time unit, that is, 2 mini-slots. The offset 2 is the time domain offset of the time-frequency resource 3 relative to the first time unit, that is, 6 mini-slots. Here, the first terminal device may jointly encode the above offset 1 and offset 2, that is, 2 mini-slots and 6 mini-slots into one value, and indicate it through the first indication information in the first SCI.

Referring to the schematic diagram of the resource indication scenario shown in FIG. 7B, all the time slots in FIG. 7B are time slots in the first resource pool used by the first terminal device, and some time slots in the first resource pool are configured as micro-time slots. slots, wherein one of every two slots in the first resource pool is configured as two mini-slots. The first SCI may indicate time-frequency resource 1, time-frequency resource 2, and time-frequency resource 3 within the first time range. The first SCI is sent on the time-frequency resource 1, and the first indication information may indicate the time-domain positions of the above-mentioned time-frequency resource 1, time-frequency resource 2, and time-frequency resource 3 only through offset 1 and offset 2. Wherein, the offset 1 is the mini-slot and the number of time slots between the time-frequency resource 2 indicated by the first SCI and the first time unit, and the value of the offset 1 is 2 (corresponding to 1 mini-slot and 1 time slot). gap). Offset 2 is the mini-slot and the number of time slots between the time-frequency resource 3 indicated by the first SCI and the first time unit, and the value of offset 3 is 6 (corresponding to 4 mini-slots plus 2 time slots ). Here, the first terminal device may jointly encode the offset 1 and the offset 2 into one value, and indicate it through the first indication information in the first SCI.

Referring to the schematic diagram of the resource indication scenario shown in FIG. 7C, all the time slots in FIG. 7C are time slots in the first resource pool used by the first terminal device, and some time slots in the first resource pool are configured as micro-time slots. slots, wherein one of every two slots in the first resource pool is configured as two mini-slots. The first SCI may indicate time-frequency resource 1, time-frequency resource 2, and time-frequency resource 3 within the first time range. The first SCI is sent on the time-frequency resource 1, and the first indication information may indicate the time-domain positions of the above-mentioned time-frequency resource 1, time-frequency resource 2, and time-frequency resource 3 only through offset 1 and offset 2. Wherein, the offset 1 is the number of mini-slots between the time-frequency resource 2 indicated by the first SCI and the first time unit, and the value of the offset 1 is 2 (corresponding to 2 mini-slots). The offset 2 is the number of mini-slots away from the time-frequency resource 3 indicated by the first SCI and the first time unit, and the value of the offset 3 is 4 (corresponding to 4 mini-slots). Here, the first terminal device may jointly encode the offset 1 and the offset 2 into one value, and indicate it through the first indication information in the first SCI.

In the implementation of this application, the second terminal device may determine a certain mini-slot or a resource reserved by a certain time slot of the first terminal device within the first time range according to the first indication information in the first SCI, Therefore, corresponding time-frequency resources are excluded during resource selection to avoid resource collision problems, so that the existing SL mechanism can be applied to resource pools configured with mini-slots or SL communication systems configured with mini-slots.

Based on the foregoing embodiments, in an embodiment of the present application, the first SCI may further include second indication information, and the second indication information is used to indicate the resource reservation period; the resource reservation period represents at least one reserved time-frequency resource and The length of the time interval between the at least one time-frequency resource; the at least one reserved time-frequency resource is in one-to-one correspondence with the at least one time-frequency resource.

Exemplarily, the second indication information may be the information carried in the resource reservation period indication (that is, Resource reservation period) field in the first SCI. The first terminal device may use the second indication information to reserve time-frequency resources of the next time period (that is, reserved time-frequency resources), where the reserved time-frequency resources will be used for transmission of another TB.

In some embodiments, the reserved time period indicated by the second indication information may be a physical time length, such as 100 milliseconds, 50 milliseconds, and so on. The physical time length refers to the time interval length between the time-frequency resource in the current period and the reserved time-frequency resource.

Exemplarily, the first SCI sent by the terminal device in the PSCCH of the initial transmission indicates the time-frequency resources of the initial transmission, retransmission 1 and retransmission 2, which are denoted as {(t ₁ ,f ₁ ),(t ₂ ,f ₂ ),(t ₃ ,f ₃ )}. Where t ₁ , t ₂ , and t ₃ are the time domain positions of the initial transmission, retransmission 1, and retransmission 2, respectively. f ₁ , f ₂ , and f ₃ are frequency domain positions of corresponding resources, respectively. If the value corresponding to the second indication information in the first SCI is 100, then the time-frequency resource {(t ₁ +100, f ₁ ),(t ₂ +100,f ₂ ),(t ₃ +100,f ₃ )}. The time-frequency resource (t ₁ , f ₁ ) of initial transmission in the current period corresponds to the reserved time-frequency resource (t ₁ +100, f ₁ ), and the time-frequency resource (t ₂ , f ₂ ) of retransmission 1 corresponds to the reserved The reserved time-frequency resource (t ₂ +100,f ₂ ) corresponds, and the time-frequency resource (t ₃ ,f ₃ ) of retransmission 2 corresponds to the reserved time-frequency resource (t ₃ +100,f ₃ ).

Based on this, the resource indication method provided in this embodiment of the application may also perform the following steps:

The second terminal device determines the number of logical time units corresponding to the resource reservation period; the logical time unit represents the time unit in the resource pool used by the second terminal device;

The second terminal device performs resource exclusion based on the number of logical time units.

In the embodiment of the present application, the first terminal device reserves the selected time-frequency resource through the first SCI. While the second terminal device is listening, it will decode the first SCI sent by other terminal devices (that is, the first terminal device), and learn the resources reserved by other terminal devices, so as to exclude corresponding resources during resource selection and avoid resource collisions. problem occurs.

Here, the first terminal device indicates the time-frequency resource reserved in the next time period in the second indication information. It should be noted that the second indication information indicates physical time (for example, 100 milliseconds). However, in practical applications, the second terminal device needs to perform resource exclusion according to the time unit in the resource pool it uses. Therefore, the second terminal device needs to convert the physical time indicated by the second indication information into a corresponding number of logical time units, and then perform resource exclusion according to the number of logical time units.

Here, the logical time unit refers to a time unit in the resource pool used by the second terminal device. In some embodiments, the resource pool used by the second terminal device includes at least one of the following:

a sending resource pool of the second terminal device;

A resource pool where the second terminal device performs resource interception.

In some embodiments, the second terminal device determines the number of logical time units corresponding to the resource reservation period, which may be implemented in the following manner:

The second terminal device determines the number of logical time units based on the number of mini-slots belonging to the resource pool used by the second terminal device within a preset time length.

Here, the preset time length may be a system frame number (SFN) period, or 10240 milliseconds, or other time lengths, which are not limited in this embodiment of the present application.

In a feasible example, the second terminal device may refer to formula (1) for a specific conversion process of converting the resource reservation period into the number of logical time units according to the number of mini-slots included in the preset time length.

Among them, Prsvp is the resource reservation period, and P'rsvp is the calculated corresponding number of logical time units. N3 is a mini-slot entry belonging to the resource pool used by the second terminal device within 10240 milliseconds.

In another feasible example, the second terminal device may refer to formula (2) for a specific conversion process of converting the resource reservation period into the number of logical time units according to the number of mini-slots included in the preset time length.

Among them, Prsvp is the resource reservation period, and P'rsvp is the calculated corresponding number of logical time units. N4 is the number of time slots belonging to the resource pool used by the second terminal device within 10240 milliseconds. Wherein, each time slot in the resource pool used by the second terminal device is configured as F mini-slots, or in other words, each time slot in the resource pool used by the second terminal device includes F mini-slots.

In some embodiments, the second terminal device determines the number of logical time units corresponding to the resource reservation period, which may also be implemented in the following manner:

The second terminal device determines the number of logical time units based on the sum of the number of mini-slots and timeslots in the resource pool used by the second terminal device within a preset time period.

It can be understood that, in the case that the resource pool used by the second terminal device includes mini-slots and time slots, the second terminal device may , to convert the resource reservation period into the number of logical time units.

Exemplarily, the second terminal device may refer to formula (3) for a specific conversion process of converting the resource reservation period into the number of logical time units according to the sum of the number of mini-slots and time slots included in the preset time length.

Among them, Prsvp is the resource reservation period, and P'rsvp is the calculated corresponding number of logical time units. N5 is the sum of the number of mini-slots and timeslots belonging to the resource pool used by the second terminal device within 10240 milliseconds.

After the number of logical time units is determined, the second terminal device may use the number of logical time units to determine the reserved time-frequency resources of the first terminal device. In this way, when the second terminal device selects resources, the reserved time-frequency resources of the first terminal device can be excluded, thereby avoiding the problem of resource collision.

To sum up, the resource indication method proposed in the embodiment of the present application and the way of converting the resource reservation period can make the existing SL mechanism applicable to resource pools configured with mini-slots or SL communication configured with mini-slots system.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Fig. 8 is a schematic diagram of the first structural composition of the resource indication device provided by the embodiment of the present application, which is applied to the first terminal device. As shown in Fig. 8, the resource indication device includes:

The sending unit 81 is configured to send the first side line control information; the first side line control information is used to indicate at least one time-frequency resource in the first time range; at least part of the time units in the multiple time units included in the first time range for the mini-slot.

In some embodiments, the first time range includes a plurality of time units starting from the first time unit.

In some embodiments, the first sidelink control information includes first indication information, and the first indication information is used to indicate a time-domain position of at least one time-frequency resource.

In some embodiments, the first indication information includes an offset of at least one time-frequency resource relative to the first time unit, and the time-domain position of the at least one time-frequency resource is based on the time-domain position and/or offset of the first time unit The amount is determined.

In some embodiments, the offset corresponds to at least one of:

The number of mini-slots of at least one time-frequency resource relative to the first time unit;

the number of mini-slots and time slots of the at least one time-frequency resource relative to the first time unit;

In the first resource pool, the number of mini-slots of at least one time-frequency resource relative to the first time unit;

In the first resource pool, the number of mini-slots and time slots of at least one time-frequency resource relative to the first time unit.

In some embodiments, the first time unit is a time unit for sending the first side traffic control information by the first terminal device.

In some embodiments, the number of multiple time units included in the first time range is determined based on any one of the following:

Determined based on pre-configured information;

Determined based on network configuration information;

Determined based on the preset values stipulated in the standard.

In some embodiments, the multiple time units included in the first time range are time units in the first resource pool.

In some embodiments, the first resource pool is a resource pool used by the first terminal device.

In some embodiments, the first resource pool includes a sending resource pool and/or a receiving resource pool used by the first terminal device.

In some embodiments, the quantity of at least one time-frequency resource is the minimum value of the first parameter and the second parameter;

The first parameter is the total number of time-frequency resources selected by the first terminal device within the first time range; the second parameter is the maximum value of time-frequency resources that can be indicated by the first sideline control information.

In some embodiments, the first sideline control information further includes second indication information, and the second indication information is used to indicate the resource reservation period; the resource reservation period represents at least one reserved time-frequency resource and at least one time-frequency resource The length of the time interval between them; at least one reserved time-frequency resource is in one-to-one correspondence with the at least one time-frequency resource.

Fig. 9 is a schematic diagram of the first structural composition of the resource indication device provided by the embodiment of the present application, which is applied to the second terminal device. As shown in Fig. 9, the resource indication device includes:

The receiving unit 91 is configured to receive the first side line control information, the first side line control information is used to indicate at least one time-frequency resource in the first time range; at least part of the time units in the multiple time units included in the first time range for the mini-slot.

In some embodiments, the first time range includes a plurality of time units starting from the first time unit.

In some embodiments, the first sidelink control information includes first indication information, and the first indication information is used to indicate a time-domain position of at least one time-frequency resource.

In some embodiments, the first indication information includes an offset of at least one time-frequency resource relative to the first time unit, and the time-domain position of the at least one time-frequency resource is based on the time-domain position of the first time unit and/or the The offset is determined.

In some embodiments, the offset corresponds to at least one of:

The number of mini-slots of at least one time-frequency resource relative to the first time unit;

the number of mini-slots and time slots of the at least one time-frequency resource relative to the first time unit;

In the first resource pool, the number of mini-slots of at least one time-frequency resource relative to the first time unit;

In the first resource pool, the number of mini-slots and time slots of at least one time-frequency resource relative to the first time unit.

In some embodiments, the first time unit is a time unit for sending the first side traffic control information by the first terminal device.

In some embodiments, the number of multiple time units included in the first time range is determined based on any one of the following:

Determined based on pre-configured information;

Determined based on network configuration information;

Determined based on the preset values stipulated in the standard.

In some embodiments, the multiple time units included in the first time range are time units in the first resource pool.

In some embodiments, the first resource pool is a resource pool used by the first terminal device.

In some embodiments, the first resource pool includes a sending resource pool and/or a receiving resource pool used by the first terminal device.

In some embodiments, the quantity of at least one time-frequency resource is the minimum value of the first parameter and the second parameter;

The first parameter is the total number of time-frequency resources selected by the first terminal device within the first time range; the second parameter is the maximum value of time-frequency resources that can be indicated by the first sideline control information.

In some embodiments, the first sideline control information further includes second indication information, and the second indication information is used to indicate the resource reservation period; the resource reservation period represents at least one reserved time-frequency resource and at least one time-frequency resource length of time interval between.

In some embodiments, the resource indicating device further includes a processing unit.

The processing unit is configured to determine the number of logical time units corresponding to the resource reservation period; the logical time unit represents a time unit in the resource pool used by the second terminal device; and perform resource exclusion based on the number of logical time units.

In some embodiments, the processing unit is further configured to determine the number of logical time units based on the number of mini-slots belonging to the resource pool used by the second terminal device within a preset time period.

In some embodiments, the processing unit is further configured to determine the number of logical time units based on the sum of the number of mini-slots and time slots belonging to the resource pool used by the second terminal device within a preset time period.

In some embodiments, the resource pool used by the second terminal device includes at least one of the following:

a sending resource pool of the second terminal device;

A resource pool where the second terminal device performs resource interception.

Those skilled in the art should understand that the relevant description of the resource indication apparatus in the embodiment of the present application can be understood with reference to the relevant description of the resource indication method in the embodiment of the present application.

Fig. 10 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application. The communication device may be a terminal device. The communication device 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can invoke and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 10 , the communication device 1000 may further include a memory 1020 . Wherein, the processor 1010 can invoke and run a computer program from the memory 1020, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1020 may be an independent device independent of the processor 1010 , or may be integrated in the processor 1010 .

Optionally, as shown in FIG. 10, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 1030 may include a transmitter and a receiver. The transceiver 1030 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 1800 may specifically be the first terminal device/second terminal device in the embodiment of the present application, and the communication device 1000 may implement the method performed by the first terminal device/second terminal in each method of the embodiment of the present application. For the sake of brevity, the corresponding processes implemented by the device are not repeated here.

FIG. 11 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11 , the chip 1100 may further include a memory 1120 . Wherein, the processor 1110 can invoke and run a computer program from the memory 1120, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1120 may be an independent device independent of the processor 1110 , or may be integrated in the processor 1110 .

Optionally, the chip 1100 may also include an input interface 1130 . Wherein, the processor 1110 can control the input interface 1130 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1100 may also include an output interface 1140 . Wherein, the processor 1110 can control the output interface 1140 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the first terminal device/second terminal device in the embodiments of the present application, and the chip can implement the functions implemented by the first terminal device/second terminal device in the various methods of the embodiments of the present application. For the sake of brevity, the corresponding process is not repeated here.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 12 is a schematic block diagram of a communication system 1200 provided by an embodiment of the present application. As shown in FIG. 12 , the communication system 1200 includes a first terminal device 1210 and a second terminal device 1220 .

Wherein, the first terminal device 2010 can be used to realize the corresponding functions realized by the first terminal device in the above method, and the second terminal device 2020 can be used to realize the corresponding functions realized by the second terminal device in the above method For the sake of brevity, details are not repeated here.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the first terminal device/second terminal device in the embodiments of the present application, and the computer program enables the computer to execute the various methods in the embodiments of the present application by the first terminal device/ For the sake of brevity, the corresponding process implemented by the second terminal device will not be repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the first terminal device/second terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the various methods in the embodiments of the present application by the first terminal device/the second terminal device For the sake of brevity, the corresponding processes of the implementation of the second terminal device will not be repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the first terminal device/second terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application. For the sake of brevity, the corresponding processes implemented by the terminal device/second terminal device are not repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (34)

A resource indication method, the method comprising: The first terminal device sends the first sideline control information; the first sideline control information is used to indicate at least one time-frequency resource within the first time range; at least part of the time in the multiple time units included in the first time range The units are mini-slots. The method of claim 1, wherein the first time range includes a plurality of time units starting from a first time unit. The method according to claim 2, wherein the first sidelink control information includes first indication information, and the first indication information is used to indicate the time domain position of the at least one time-frequency resource. The method according to claim 3, wherein the first indication information includes an offset of the at least one time-frequency resource relative to the first time unit, and the time-domain position of the at least one time-frequency resource is based on The time domain position of the first time unit and/or the offset is determined. The method of claim 4, wherein the offset corresponds to at least one of: The number of mini-slots of the at least one time-frequency resource relative to the first time unit; the number of mini-slots and time slots of the at least one time-frequency resource relative to the first time unit; In the first resource pool, the number of mini-slots of the at least one time-frequency resource relative to the first time unit; In the first resource pool, the number of mini-slots and time slots of the at least one time-frequency resource relative to the first time unit. The method according to any one of claims 2-5, wherein the first time unit is a time unit for the first terminal device to send the first lateral control information. The method according to any one of claims 1-6, wherein the number of multiple time units included in the first time range is determined based on any one of the following: Determined based on pre-configured information; Determined based on network configuration information; Determined based on the preset values stipulated in the standard. The method according to any one of claims 1-7, wherein the multiple time units included in the first time range are time units in the first resource pool. The method according to claim 8, wherein the first resource pool is a resource pool used by the first terminal device. The method according to claim 9, wherein the first resource pool includes a sending resource pool and/or a receiving resource pool used by the first terminal device. The method according to any one of claims 1-10, wherein the quantity of the at least one time-frequency resource is the minimum value of the first parameter and the second parameter; The first parameter is the total number of time-frequency resources selected by the first terminal device within the first time range; the second parameter is the number of time-frequency resources that can be indicated by the first sideline control information maximum value. The method according to any one of claims 1-11, wherein the first SCI further includes second indication information, and the second indication information is used to indicate a resource reservation period; the resource reservation period represents The length of the time interval between the at least one reserved time-frequency resource and the at least one time-frequency resource; the at least one reserved time-frequency resource corresponds to the at least one time-frequency resource one by one. A resource indication method, the method comprising: The second terminal device receives first sideline control information, where the first sideline control information is used to indicate at least one time-frequency resource within a first time range; at least part of the time in multiple time units included in the first time range The units are mini-slots. The method of claim 13, wherein the first time range includes a plurality of time units starting from a first time unit. The method according to claim 14, wherein the first sidelink control information includes first indication information, and the first indication information is used to indicate the time domain position of the at least one time-frequency resource. The method according to claim 15, wherein the first indication information includes an offset of the at least one time-frequency resource relative to the first time unit, and the time-domain position of the at least one time-frequency resource is based on The time domain position of the first time unit and/or the offset is determined. The method of claim 16, wherein the offset corresponds to at least one of: The number of mini-slots of the at least one time-frequency resource relative to the first time unit; the number of mini-slots and time slots of the at least one time-frequency resource relative to the first time unit; In the first resource pool, the number of mini-slots of the at least one time-frequency resource relative to the first time unit; In the first resource pool, the number of mini-slots and time slots of the at least one time-frequency resource relative to the first time unit. The method according to any one of claims 14-17, wherein the first time unit is a time unit for the first terminal device to send the first lateral control information. The method according to any one of claims 13-18, wherein the number of multiple time units included in the first time range is determined based on any one of the following: Determined based on pre-configured information; Determined based on network configuration information; Determined based on the preset values stipulated in the standard. The method according to any one of claims 13-19, wherein the multiple time units included in the first time range are time units in the first resource pool. The method according to claim 20, wherein the first resource pool is a resource pool used by the first terminal device. The method according to claim 21, wherein the first resource pool comprises a sending resource pool and/or a receiving resource pool used by the first terminal device. The method according to any one of claims 13-22, wherein the quantity of the at least one time-frequency resource is the minimum value of the first parameter and the second parameter; The first parameter is the total number of time-frequency resources selected by the first terminal device within the first time range; the second parameter is the number of time-frequency resources that can be indicated by the first sideline control information maximum value. The method according to claim 13, wherein the first SCI further includes second indication information, The second indication information is used to indicate a resource reservation period; the resource reservation period represents the length of a time interval between at least one reserved time-frequency resource and the at least one time-frequency resource; the at least one reserved time-frequency resource The frequency resource is in one-to-one correspondence with the at least one time-frequency resource; The method also includes: The second terminal device determines the number of logical time units corresponding to the resource reservation period; the logical time unit represents a time unit in the resource pool used by the second terminal device; The second terminal device performs resource exclusion based on the number of logical time units. According to the method according to claim 24, determining the number of logical time units corresponding to the resource reservation period by the second terminal device includes: The second terminal device determines the number of logical time units based on the number of mini-slots belonging to the resource pool used by the second terminal device within a preset time period. According to the method according to claim 24 or 25, the second terminal device determines the number of logical time units corresponding to the resource reservation period, comprising: The second terminal device determines the number of logical time units based on the sum of the number of mini-slots and time slots belonging to the resource pool used by the second terminal device within a preset time period. The method according to any one of claims 13-26, wherein the resource pool used by the second terminal device includes at least one of the following: a sending resource pool of the second terminal device; A resource pool where the second terminal device performs resource interception. A resource indicating device, applied to a first terminal device, the device comprising: The sending unit is configured to send first sideline control information; the first sideline control information is used to indicate at least one time-frequency resource within a first time range; at least one of the multiple time units included in the first time range Some time units are mini-slots. A resource indicating device, applied to a second terminal device, the device comprising: The receiving unit is configured to receive first sideline control information, where the first sideline control information is used to indicate at least one time-frequency resource within a first time range; at least one of the multiple time units included in the first time range Some time units are mini-slots. A terminal device, comprising: a processor and a memory, the memory is used to store computer programs, the processor is used to invoke and run the computer programs stored in the memory, and execute any of the following claims 1-12 or 13-27 one of the methods described. A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-12 or 13-27. A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1-12 or 13-27. A computer program product comprising computer program instructions for causing a computer to perform the method according to any one of claims 1-12 or 13-27. A computer program that causes a computer to execute the method according to any one of claims 1-12 or 13-27.

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