WO2024131813A1 - Transmission method and apparatus, and terminal - Google Patents

Abstract

The present application relates to the field of communications, and discloses a transmission method and apparatus, and a terminal. The transmission method of embodiments of the present application comprises: a terminal sends indication information on a transmission resource of a sidelink, the indication information being used for indicating a reserved resource; and the terminal transmits a TB in the reserved resource, wherein the reserved resource is a reserved resource of at least two time slots.

Description

Transmission method, device and terminal

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202211667674.8 filed on December 23, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a transmission method, device and terminal.

Background technique

Sidelink (SL) transmission refers to data transmission between terminals (User Equipment, UE) directly on the physical layer. SL UE includes two resource allocation modes, mode 1 (mode1) and mode 2 (mode2), where mode 1 is the resource scheduling by the base station, and mode 2 is the resource used when the UE decides to transmit by itself. For mode 2, the UE selects transmission resources from the candidate resource set, and can reserve transmission resources for subsequent transmissions in this transmission. In the prior art, when the sidelink UE transmits in the unlicensed spectrum, it is not certain how the UE transmits in the reserved transmission resources.

Summary of the invention

The embodiments of the present application provide a transmission method, device and terminal, which can solve the problem that the prior art cannot determine how a UE transmits in reserved transmission resources.

In a first aspect, a transmission method is provided, the method comprising:

The terminal sends indication information on the transmission resources of the side link, where the indication information is used to indicate the reserved resources;

The terminal transmits a transport block (TB) in the reserved resources;

The reserved resources are resources of at least two time slots reserved.

In a second aspect, a transmission device is provided, the device comprising:

A sending module, used to send indication information on the transmission resources of the side link, where the indication information is used to indicate the reserved resources;

A first transmission module, configured to transmit the TB in the reserved resources;

The reserved resources are resources of at least two time slots reserved.

According to a third aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to The method further comprises sending indication information on the transmission resources of the path, wherein the indication information is used to indicate the reserved resources; transmitting the TB in the reserved resources; wherein the reserved resources are resources of at least two time slots reserved.

In a fifth aspect, a communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the transmission method as described in the first aspect.

In a sixth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

In a seventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

In an eighth aspect, a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium and is executed by at least one processor to implement the steps of the transmission method as described in the first aspect.

In an embodiment of the present application, the terminal may send indication information indicating the reserved resources on the transmission resources. Among them, the terminal may reserve resources of multiple time slots and transmit TB on the resources of the reserved multiple time slots. The embodiment of the present application provides a method for the terminal to transmit TB when resources of at least two time slots are reserved, which can achieve continuous transmission and avoid the situation where transmission is discontinuous and channel occupancy is lost due to transmission only in part of the reserved time slot resources, thereby ensuring transmission efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied;

FIG2 is a schematic diagram of sidelink transmission according to an embodiment of the present application;

FIG3 is a schematic diagram of a flow chart of a transmission method according to an embodiment of the present application;

FIG4 is a schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG5 is a second schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG6 is a third schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG7 is a fourth schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG8 is a fifth schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG9 is a sixth schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG10 is a seventh schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG11 is a schematic diagram of transmitting a TB in reserved resources in an eighth embodiment of the present application;

FIG12 is a ninth schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG13 is a tenth schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG14 is a schematic diagram of the transmission of a TB in reserved resources according to an embodiment of the present application;

FIG15 is a twelfth schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG16 is a thirteenth schematic diagram of transmitting a TB in reserved resources according to an embodiment of the present application;

FIG17 is a schematic diagram of the structure of a transmission device according to an embodiment of the present application;

FIG18 is a schematic diagram of the structure of a communication device according to an embodiment of the present application;

FIG19 is a schematic diagram of the structure of a terminal according to an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally represents that the objects associated with each other are in an "or" relationship.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a new radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the ^6th Generation (6G) communication system.

FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network side device 12 . The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (AR)/virtual reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle user equipment (VUE), a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (a home appliance with wireless communication function, such as a refrigerator, a television, a washing machine or furniture, etc.), a game console, a personal computer (personal computer, PC), a teller machine or a self-service machine and other terminal side devices, and the wearable device includes: a smart watch, a smart bracelet, a smart headset, a smart glasses, a smart jewelry (smart bracelet, a smart bracelet, a smart ring, a smart necklace, a smart anklet, a smart anklet, etc.), a smart wristband, a smart clothing, etc. It should be noted that the specific type of the terminal 11 is not limited in the present embodiment. The network side device 12 may include an access network device or a core network device. The device may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmission reception point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, it should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

First, some concepts mentioned in the embodiments of the present application are explained.

1. Sidelink

Sidelink (also called secondary link, sidelink, sidelink, etc.) transmission, as shown in Figure 2, is data transmission between terminals (User Equipment, UE) directly on the physical layer. Long Term Evolution (LTE) sidelink is based on broadcast communication and can be used to support basic safety communications of vehicle to everything (V2X), but is not suitable for other more advanced V2X services. 5G NR (New Radio) system supports more advanced sidelink transmission design, such as unicast, multicast or groupcast, so as to support a more comprehensive range of business types.

2. Sidelink resource indication

SL UE includes two resource allocation modes, mode1 and mode2. Mode1 is the base station scheduling resources, and mode2 is the resources that the UE decides to use for transmission. Resource information may come from the base station's broadcast message or pre-configured information. If the UE works within the base station range and has a Radio Resource Control (RRC) connection with the base station, it can use mode1 and/or mode2; if the UE works within the base station range but has no RRC connection with the base station, it can only work in mode2. If the UE is outside the base station range, it can only work in mode2 and perform SL transmission according to the pre-configured information.

For mode 2, the specific working method is as follows:

1) After the resource selection is triggered, the UE first determines the resource selection window. The lower boundary of the resource selection window is T1 time after the resource selection is triggered, and the upper boundary of the resource selection is T2 time after the trigger. T2 is the value selected by the UE implementation within the packet delay budget (PDB) of its TB transmission, and T2 is no earlier than T1.

2) Before selecting resources, the UE needs to determine the candidate resource set (candidate resource set) for resource selection, and compare the reference signal received power (RSRP) measured on the resources in the resource selection window with the corresponding RSRP threshold (threshold). If the RSRP is lower than the RSRP threshold, then the resource can be included in the candidate resource set.

3) After the resource set is determined, the UE randomly selects a transmission resource from the candidate resource set. In addition, the UE can reserve transmission resources for the next transmission during the current transmission.

3. Sidelink’s technical solution for unlicensed spectrum transmission

For the sidelink of unlicensed spectrum (Sidelink-Unlicensed band, SL-U), it is necessary to send SL data Before the communication is completed, the channel is acquired by listening before talking (LBT).

Shared spectrum, such as unlicensed spectrum, can be used as a supplement to licensed spectrum to help operators expand services. Unlicensed spectrum can operate in the 5GHz, 37GHz and 60GHz bands. When using unlicensed bands, it is necessary to comply with rules to ensure that all devices can use the resource fairly, such as LBT, Maximum Channel Occupancy Time (MCOT) and other rules. When a transmission node needs to send information, it needs to do LBT first, and then perform power detection (Energy Detection, ED) on the surrounding nodes. When the detected power is lower than a threshold, the channel is considered to be idle, and the transmission node can send. Otherwise, the channel is considered to be busy, and the transmission node cannot send. Transmission nodes can be base stations, UEs, WiFi APs, etc. After the transmission node starts transmitting, the occupied channel time (Channel Occupancy Time, COT) cannot exceed MCOT.

In the unlicensed spectrum NR (New Radio in Unlicensed Spectrum, NRU), the types of LBT can include: Type1, Type2A, Type2B and Type2C. Type1LBT is a channel listening mechanism based on back-off. When the transmission node detects that the channel is busy, it backs off and continues to listen until the channel is empty. Type2C is that the sending node does not perform LBT, that is, no LBT or direct transmission (immediate transmission). Type2A and Type2B LBT are one-shot LBT, that is, the node performs LBT once before transmission, and transmits if the channel is empty, and does not transmit TB if the channel is busy.

In frequency range 2-2, the types of LBT are Type 1, Type 2 and Type 3. Type 1 is a channel listening mechanism based on fallback, Type 2 is one-shot LBT, and Type 3 is no LBT.

The transmission method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

As shown in FIG3 , an embodiment of the present application provides a transmission method, which is applied to a terminal. The method includes:

Step 301: The terminal sends indication information on the transmission resources of the side link, where the indication information is used to indicate reserved resources; wherein the reserved resources are resources of at least two time slots reserved.

Step 302: The terminal transmits a TB in the reserved resources;

In this embodiment, the sidelink UE may send indication information indicating reserved resources on the transmission resources when transmitting in the unlicensed spectrum. Among them, resources of multiple time slots (multi-slot) may be reserved, such as reserving resources of at least two time slots. The sidelink UE transmits the TB on the resources of at least two reserved time slots. Optionally, the transmitted TB may be a retransmission of a TB that has already been transmitted, or a transmission of a new TB. The embodiment of the present application provides a method for a terminal to transmit a TB when resources of at least two time slots are reserved, which can achieve continuous transmission and avoid the situation where transmission is discontinuous and channel occupancy is lost due to transmission only in part of the reserved time slot resources, thereby ensuring transmission efficiency.

As an optional embodiment, transmitting the TB in the reserved resources includes at least one of the following:

Solution 1: If at least one TB among the TBs transmitted by the transmission resource fails to be transmitted, at least part of the TBs are retransmitted in the reserved resources.

Solution 2: If all TBs transmitted by the transmission resource are successfully transmitted, other TBs are transmitted in the reserved resources, and the other TBs are TBs other than the TBs transmitted by the transmission resource;

Solution 3: If no response message is received for the TB transmitted by the transmission resource, Retransmit all TBs.

In this embodiment, the terminal can determine the specific method of transmitting the TB in the reserved resources according to the transmission status of the TB transmitted by the transmission resource or the reception status of the response message. For example: if the terminal fails to transmit at least one TB among the TBs transmitted by the transmission resource, then the part of the TBs transmitted last time is retransmitted at the resource position of the corresponding time slot in the reserved multi-slot resource, and the part of the TB includes the TB that failed to be transmitted; if the terminal successfully transmits all the TBs transmitted by the transmission resource, then the reserved multi-slot resources can be used to transmit new TBs, that is, to transmit other TBs other than the TB that was successfully transmitted last time. Optionally, the reserved resources can be abandoned when all TBs are successfully transmitted. If the terminal does not receive any response message after transmitting the TB by the transmission resource, all TBs are retransmitted in the reserved multi-slot resources.

Optionally, the method further includes: receiving a response message for the TB transmitted by the transmission resource; determining, based on the response message: transmission failure of the TB transmitted by the transmission resource, or transmission success of the TB transmitted by the transmission resource; wherein the response message includes: a negative acknowledgment (NACK) response message or a positive acknowledgment (ACK) response message.

In this embodiment, if the terminal receives a NACK response message for a TB transmitted by a transmission resource, it is considered that the TB transmission has failed; if the terminal receives an ACK response message for a TB transmitted by a transmission resource, it is considered that the TB transmission has succeeded. For example: for Hybrid Automatic Repeat Request (HARQ) feedback (HARQ-based retransmission), if the terminal receives a NACK response message corresponding to at least one TB, it means that at least one TB transmission has failed in the TB transmitted by the transmission resource; for HARQ feedback (HARQ-feedback) with ACK/NACK enabled, if the TBs transmitted by the multi-slot transmission resource all receive corresponding ACK response messages, it means that all TBs have been successfully transmitted.

The following describes the above three solutions respectively.

For scenario 1:

Optionally, the retransmitting at least part of the TB in the reserved resources includes one of the following:

(a) retransmitting all TBs between the first TB whose transmission fails and the last TB whose transmission fails in the reserved resources;

(b) retransmitting the TB whose transmission fails in the reserved resources;

(c) when the number of TBs whose transmission fails is greater than or equal to a first threshold, retransmit all TBs in the reserved resources.

In this embodiment, for (a), optionally, the reserved resources can only be used to retransmit TBs. If at least one TB fails to be transmitted among the TBs transmitted by the transmission resource, all TBs between the first failed TB and the last failed TB can be retransmitted in the time slot corresponding to the reserved multi-slot resource, so that continuous transmission can be guaranteed while ensuring resource utilization. For example, as shown in Figure 4, when the TBs transmitted by the terminal in the multi-slot (including slot1 to slot4) resources are TB1, TB2, TB3 and TB4, and the corresponding 4 consecutive slot resources (including slot7 to slot10) are reserved, if TB1 and TB3 fail to transmit (the corresponding NACK feedback is received), TB1, TB2 and TB3 can be retransmitted at the resource positions of slot7 to slot10.

Optionally, the method further comprises: if the TB transmitted before the time domain position of the first TB where the transmission fails If the transmission is successful, the first TB whose transmission failed is retransmitted in the reserved resources corresponding to the TB whose transmission is successful, or the TB whose transmission is successful is retransmitted.

Optionally, the retransmitting the first TB that failed to be transmitted in the reserved resources corresponding to the TB that successfully transmitted includes: when the priority of the first TB that failed to be transmitted is higher than the priority of the TB that successfully transmitted, retransmitting the first TB that failed to be transmitted in the reserved resources corresponding to the TB that successfully transmitted. In this embodiment, when the priority of the first TB that failed to be transmitted is higher than the priority of the TB that successfully transmitted, the first TB that failed to be transmitted can be retransmitted in the reserved resource position corresponding to the TB that successfully transmitted.

For example, as shown in Figures 5 and 6, when the TBs transmitted by the terminal in the multi-slot (including slot1 to slot4) resources are TB1, TB2, TB3 and TB4, and the corresponding 4 consecutive slot resources (including slot7 to slot10) are reserved, if the transmission of TB2 and TB3 fails, TB2 and TB3 can be retransmitted in the resource positions of slot8 and slot9. Since TB1 is successfully transmitted, TB2 (the first TB that failed to be transmitted) can be retransmitted in the reserved resource position slot7 corresponding to TB1, or TB1 (the TB that was successfully transmitted) can be retransmitted in slot7. Optionally, TB2 can be retransmitted in slot7 when the priority of TB2 is greater than the priority of TB1.

Optionally, the method further includes: if a TB transmitted after the time domain position of the last TB where transmission failed is successfully transmitted, retransmitting the last TB where transmission failed, or retransmitting the TB where transmission was successfully completed, using reserved resources corresponding to the successfully transmitted TB.

For example, as shown in Figures 7 and 8, if TB1 and TB3 fail to be transmitted, TB1, TB2 and TB3 can be retransmitted in the resource locations from slot7 to slot10. Assuming that TB4 is successfully transmitted, TB3 (the last TB that failed to be transmitted) can be retransmitted in the reserved resource location slot10 corresponding to TB4, or TB4 (the TB that successfully transmitted) can be retransmitted in the reserved resource location slot10 corresponding to TB4. Optionally, the first TB that failed to be transmitted can also be retransmitted in the reserved resources corresponding to the TB that successfully transmitted. As shown in Figure 9, TB1 (the first TB that failed to be transmitted) can be retransmitted in the reserved resource location slot10 corresponding to TB4.

Optionally, if the TB transmitted after the time domain position of the last TB where the transmission failed does not receive a corresponding response message, the TB that does not receive a response message is repeatedly transmitted at the time domain position after the last TB where the transmission failed (as shown in Figure 8), or the last TB where the transmission failed is repeatedly transmitted (as shown in Figure 7), or other TBs are transmitted (as shown in Figure 10).

Taking the transmission of other TBs in the time domain position after the last TB where the transmission failed as an example, as shown in Figure 10, if the transmission of TB1 and TB3 fails, TB1, TB2 and TB3 can be retransmitted at the resource positions of slot7 to slot10. Assuming that no response message is received for TB4, a new TB (TB5) is transmitted at the reserved resource position slot10 corresponding to TB4.

For (b), when at least one TB fails to be transmitted among the TBs transmitted by the terminal in the transmission resource, the terminal can also retransmit the TB that failed to be transmitted only in the corresponding time slot resource, which can improve resource utilization. As shown in Figure 11, when the TBs transmitted by the terminal in the multi-slot (including slot1 to slot4) resource are TB1, TB2, TB3 and TB4, and the corresponding 4 consecutive slot resources (including slot7 to slot10) are reserved, if TB1 and TB3 fail to be transmitted (the corresponding NACK feedback is received), TB1 and TB3 can be retransmitted in the resource positions of slot7 and slot10 respectively.

Optionally, if the TB whose transmission failed is retransmitted in the reserved resources, the method further comprises: The reserved resources corresponding to the successful TB are used to retransmit the TB that failed to transmit or to transmit other TBs.

In this embodiment, the reserved resources corresponding to the successfully transmitted TB can be used to retransmit the TB that failed to transmit, or to transmit a new TB. For example: when the reserved resources can only be used to retransmit the TB, the reserved resources corresponding to the successfully transmitted TB are used to retransmit the TB that failed to transmit; or, when the reserved resources can be used to retransmit the TB and to newly transmit the TB, if there is a newly transmitted TB, the reserved resources corresponding to the successfully transmitted TB are used to transmit other TBs.

Optionally, the retransmitting the TB that failed to transmit in the reserved resources corresponding to the TB that successfully transmitted includes: retransmitting at least one of the following TBs that failed to transmit in the reserved resources corresponding to the TB that successfully transmitted:

The TB with the highest priority among the TBs that failed to transmit;

The TB with the most retransmissions among the TBs that failed to transmit;

Among the TBs that failed to be transferred, the TB with the longest time since the last transfer.

Optionally, retransmitting the TB that failed to be transmitted or transmitting other TBs using the reserved resources corresponding to the successfully transmitted TB includes:

If the other TBs exist, the other TBs are preferentially transmitted in the reserved resources corresponding to the successfully transmitted TBs;

or,

According to the priorities and/or urgency of the TB whose transmission fails and the other TBs, it is determined to retransmit the TB whose transmission fails or to transmit other TBs using the reserved resources corresponding to the TB whose transmission succeeds.

For example, when the TBs transmitted by the multi-slot (slot1 to slot4) transmission resources are TB1, TB2, TB3, and TB4, and the corresponding 4 consecutive slot resources (slot7 to slot10) are reserved, if the transmission of TB1 and TB3 fails, TB1 and TB3 are retransmitted in the reserved resources of slot7 and slot10, and the resources of TB2 and TB4 may not be transmitted, or new TBs may be transmitted when there are new TBs (as shown in FIG. 12, TB5 is transmitted in slot8; as shown in FIG. 13, TB5 is transmitted in slot8, and TB6 is transmitted in slot10). Alternatively, assuming that the priority of TB1 is greater than that of TB5, TB1 may be retransmitted in slot8; assuming that the priority of TB3 is greater than that of TB5, TB3 may be retransmitted in slot8.

Optionally, if the TB transmitted after the time domain position of the last TB where transmission failed does not receive a corresponding response message, the TB that does not receive a response message is repeatedly transmitted at the time domain position after the last TB where transmission failed, or the last TB where transmission failed is repeatedly transmitted, or other TBs are transmitted.

Optionally, as shown in FIG. 14 and FIG. 15 , for the resources of TB2 and TB4 (ie, slot 8 and slot 10), TB1 and TB3 that failed to be transmitted may be retransmitted; or, TB1 may be retransmitted in slot 8, and TB4 may be transmitted in slot 10 (for example, the corresponding message of TB4 is not received).

For (c), when at least one TB fails to be transmitted among the TBs transmitted by the transmission resource, if the number of TBs that fail to be transmitted is greater than a first threshold (the first threshold can be set to any value, such as 1), the terminal can retransmit all TBs in the reserved resources. As shown in FIG16 , assuming that the first threshold is 1, if TB1 and TB3 fail to be transmitted, TB1 to TB4 can be retransmitted at the resource locations of slot7 to slot10.

In this embodiment, when the number of TBs whose transmission fails is greater than or equal to the first threshold, the physical layer also feeds back a NACK response message for the TBs whose transmission succeeds, so that the medium access control (MAC) MAC) can retransmit all TBs to ensure continuous transmission, which can simplify HARQ feedback; or, the physical layer bundles the ACK or NACK of multiple TBs transmitted on the transmission resource for feedback (such as performing a logical AND operation), and can feedback a response message for multiple TBs, so that MAC can retransmit all TBs to ensure continuous transmission and simplify HARQ feedback.

For scenario 2:

Optionally, if all TBs transmitted by the transmission resources are successfully transmitted, then other TBs are transmitted in the reserved resources, including: if all TBs transmitted by the transmission resources are successfully transmitted and the priority of the other TBs is higher than the priority of the TBs transmitted by the transmission resources, then other TBs are transmitted in the reserved resources.

In this embodiment, when all TBs are successfully transmitted, the reserved multi-slot resources can be used to transmit new TBs (i.e., the other TBs), and the reserved resources can also be abandoned. For example: when the priority of the other TBs is higher than the priority of the TBs corresponding to the reserved resources, the reserved resources are used to transmit the other TBs, otherwise, the reserved resources are abandoned. For example: TB1 to TB4 transmitted on the resources of slot1 to slot4 are all successfully transmitted. For reserved slot7 to slot10, taking slot7 as an example, if the priority of the new TB5 is greater than the priority of TB1, TB5 is transmitted on the resources of slot7.

For scenario 3:

In the case where no ACK/NACK feedback is received, all TBs in the multi-slot are retransmitted. Optionally, the failure to receive a response message for the TB transmitted by the transmission resource includes at least one of the following:

1) When hybrid automatic repeat request HARQ feedback (HARQ-feedback) is not enabled, no response message is received;

2) In the case of HARQ feedback enabled with NACK-only, no NACK response message is received. In the case of HARQ-feedback enabled with NACK-only, no NACK response message corresponding to the TB transmitted in multi-slot is received. Since it is impossible to distinguish whether it is due to the inability to transmit on the Physical SideLink Feedback Channel (PSFCH), the lack of resources, or the TB transmission failure, all TBs need to be retransmitted.

3) In the case of HARQ feedback enabling ACK and NACK, no ACK response message or NACK response message is received. In the case of HARQ-feedback enabling ACK-NACK, no ACK/NACK response message corresponding to the TB transmitted in multi-slot is received. Since it is impossible to distinguish whether it is due to PSFCH failure to transmit, lack of resources or TB transmission failure, all TBs need to be retransmitted.

As an optional embodiment, the at least two reserved time slots are at least two consecutive time slots. In this embodiment, the reserved multi-slot resources are resources of multiple consecutive slots.

Optionally, the sending the indication information on the transmission resource of the side link includes the following:

Sending at least one sidelink control information (SCI) on a transmission resource of the sidelink, wherein the SCI indicates a reserved resource in units of at least two time slots;

An SCI is sent in each time slot corresponding to the transmission resources of the side link, and the SCI indicates the reserved resources in units of each time slot.

In this embodiment, when the terminal transmits a resource indication to reserve resources, it can use any of the above two methods. For example, one SCI indicates reserved resources in multi-slot units, such as SCI indicates 2 reserved resources, and each reserved resource includes resources of 4 slots; or, the SCI of each slot of the transmission resource indicates the corresponding reserved resources, with one slot as a unit, such as: the transmission resource includes resources of 4 slots, one SCI is sent on each slot, and each SCI indicates the reserved resources of 1 slot.

Optionally, in an embodiment of the present application, the transmission resource may also be selected based on the TB that actually needs to be retransmitted, that is, no resource reservation is performed. For example, for a TB that receives NACK feedback or for a case where HARQ-ACK is not enabled, resource selection is performed, that is, no resource reservation is performed for the retransmission of multi-slot resources.

In an embodiment of the present application, the terminal may send indication information indicating reserved resources on the transmission resource. Among them, the terminal may reserve resources of multiple time slots and transmit TB on the resources of the reserved multiple time slots. The embodiment of the present application provides a method for the terminal to transmit TB when resources of at least two time slots are reserved, which can achieve continuous transmission and avoid the situation where transmission is discontinuous and channel occupancy is lost due to transmission only in part of the reserved time slot resources, thereby ensuring transmission efficiency.

The transmission method provided in the embodiment of the present application can be executed by a transmission device. In the embodiment of the present application, the transmission device provided in the embodiment of the present application is described by taking the transmission method executed by the transmission device as an example.

As shown in FIG. 17 , an embodiment of the present application provides a transmission device 1700, including:

A sending module 1710, configured to send indication information on a transmission resource of a side link, wherein the indication information is used to indicate a reserved resource;

A first transmission module 1720, configured to transmit the TB in the reserved resources;

The reserved resources are resources of at least two time slots reserved.

Optionally, the first transmission module includes at least one of the following:

A first transmission unit, configured to retransmit at least part of the TBs in the reserved resources if at least one TB in the TBs transmitted by the transmission resource fails to be transmitted;

A second transmission unit, configured to transmit other TBs in the reserved resources if all TBs transmitted by the transmission resource are successfully transmitted, wherein the other TBs are TBs other than the TBs transmitted by the transmission resource;

The third transmission unit is configured to retransmit all TBs in the reserved resources if no response message is received for the TBs transmitted using the transmission resources.

Optionally, the device further comprises:

A first receiving module, configured to receive a response message to the TB transmitted by the transmission resource;

A determination module, configured to determine, according to the response message, whether the TB transmitted by the transmission resource fails to be transmitted, or whether the TB transmitted by the transmission resource is successfully transmitted;

The response message includes: a negative acknowledgement NACK response message or a positive acknowledgement ACK response message.

Optionally, the first transmission unit is specifically configured to perform one of the following:

retransmitting in the reserved resources all TBs between the first TB whose transmission fails and the last TB whose transmission fails;

retransmitting the TB whose transmission failed in the reserved resources;

When the number of TBs with failed transmission is greater than or equal to the first threshold, all TBs are retransmitted in the reserved resources.

Optionally, the device further comprises:

The second transmission module is used to retransmit the first TB that failed to be transmitted, or retransmit the successfully transmitted TB, in the reserved resources corresponding to the successfully transmitted TB, if the TB transmitted before the time domain position of the first TB that failed to be transmitted is successfully transmitted.

Optionally, the second transmission module is specifically used to:

In the case that the priority of the first TB that fails to transmit is higher than the priority of the TB that succeeds to transmit, the first TB that fails to transmit is retransmitted using the reserved resources corresponding to the TB that succeeds to transmit.

Optionally, the device further comprises:

The third transmission module is used to retransmit the TB that failed to be transmitted or transmit other TBs in the reserved resources corresponding to the TB that was successfully transmitted.

Optionally, the third transmission module is specifically used to:

The reserved resources corresponding to the successfully transmitted TBs are used to retransmit at least one of the following TBs that failed to transmit:

The TB with the highest priority among the TBs that failed to transmit;

The TB with the most retransmissions among the TBs that failed to transmit;

Among the TBs that failed to be transferred, the TB with the longest time since the last transfer.

Optionally, the third transmission module is specifically used to:

If the other TBs exist, the other TBs are preferentially transmitted in the reserved resources corresponding to the successfully transmitted TBs;

or,

According to the priorities and/or urgency of the TB whose transmission fails and the other TBs, it is determined to retransmit the TB whose transmission fails or to transmit other TBs using the reserved resources corresponding to the TB whose transmission succeeds.

Optionally, the device further comprises:

The fourth transmission module is used to retransmit the last TB that failed to be transmitted, or retransmit the successfully transmitted TB, in the reserved resources corresponding to the successfully transmitted TB, if the TB transmitted after the time domain position of the last TB that failed to be transmitted is successfully transmitted.

Optionally, the second transmission unit is specifically used to:

If all TBs transmitted by the transmission resource are successfully transmitted, and the priority of the other TBs is higher than the priority of the TBs transmitted by the transmission resource, the other TBs are transmitted in the reserved resources.

Optionally, the failure to receive a response message for the TB transmitted by the transmission resource includes at least one of the following:

When hybrid automatic repeat request HARQ feedback is not enabled, no response message is received;

In the case of HARQ feedback enabling NACK only, no NACK response message is received;

In case of HARQ feedback enabling ACK and NACK, no ACK response message or NACK response message is received.

Optionally, the at least two reserved time slots are at least two consecutive time slots.

Optionally, the sending module is specifically configured to perform one of the following:

Sending at least one SCI on a transmission resource of the sidelink, the SCI indicating reserved resources in units of at least two time slots;

An SCI is sent in each time slot corresponding to the transmission resources of the side link, and the SCI indicates the reserved resources in units of each time slot.

In an embodiment of the present application, the terminal may send indication information indicating reserved resources on the transmission resource. Among them, the terminal may reserve resources of multiple time slots and transmit TB on the resources of the reserved multiple time slots. The embodiment of the present application provides a method for the terminal to transmit TB when resources of at least two time slots are reserved, which can achieve continuous transmission and avoid the situation where transmission is discontinuous and channel occupancy is lost due to transmission only in part of the reserved time slot resources, thereby ensuring transmission efficiency.

The transmission device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The transmission device provided in the embodiment of the present application can implement the various processes implemented by the method embodiments of Figures 1 to 16 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

Optionally, as shown in FIG18 , the embodiment of the present application further provides a communication device 1800, including a processor 1801 and a memory 1802, wherein the memory 1802 stores a program or instruction that can be run on the processor 1801, for example, when the communication device 1800 is a terminal, the program or instruction is executed by the processor 1801 to implement each step of the above transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is used to: send indication information on the transmission resources of the side link, the indication information is used to indicate the reserved resources; transmit TB in the reserved resources; wherein the reserved resources are resources reserved for at least two time slots. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, Figure 19 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

The terminal 1900 includes but is not limited to: a radio frequency unit 1901, a network module 1902, an audio output unit 1903, an input unit 1904, a sensor 1905, a display unit 1906, a user input unit 1907, an interface unit 1908, a memory 1909 and at least some of the components of the processor 1910.

Those skilled in the art will appreciate that the terminal 1900 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1910 through a power management system, so as to implement functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG19 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 1904 may include a graphics processor (Graphics The graphics processor 19041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1906 may include a display panel 19061, and the display panel 19061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1907 includes a touch panel 19071 and at least one of other input devices 19072. The touch panel 19071 is also called a touch screen. The touch panel 19071 may include two parts: a touch detection device and a touch controller. Other input devices 19072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1901 can transmit the data to the processor 1910 for processing; in addition, the RF unit 1901 can send uplink data to the network side device. Generally, the RF unit 1901 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 1909 can be used to store software programs or instructions and various data. The memory 1909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1909 may include a volatile memory or a non-volatile memory, or the memory 1909 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 1910 may include one or more processing units; optionally, the processor 1910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1910.

The radio frequency unit 1901 is used to send indication information on the transmission resources of the side link, where the indication information is used to indicate reserved resources; a transmission block TB is transmitted in the reserved resources; and the reserved resources are resources of at least two time slots reserved.

Optionally, the radio frequency unit 1901 is specifically configured to perform at least one of the following:

If at least one TB among the TBs transmitted by the transmission resource fails to be transmitted, retransmitting at least part of the TBs in the reserved resources;

If all TBs transmitted by the transmission resource are successfully transmitted, other TBs are transmitted in the reserved resource. The other TBs are TBs other than the TBs transmitted by the transmission resource;

If no response message is received for the TB transmitted using the transmission resource, all TBs are retransmitted using the reserved resource.

Optionally, the radio frequency unit 1901 is further used for:

receiving a response message for the TB transmitted by the transmission resource;

The processor 1910 is configured to: determine, according to the response message, that the transmission of the TB transmitted by the transmission resource fails, or that the transmission of the TB transmitted by the transmission resource succeeds;

The response message includes: a negative acknowledgement NACK response message or a positive acknowledgement ACK response message.

Optionally, the radio frequency unit 1901 is specifically configured to perform one of the following:

retransmitting in the reserved resources all TBs between the first TB whose transmission fails and the last TB whose transmission fails;

retransmitting the TB whose transmission failed in the reserved resources;

When the number of TBs with failed transmission is greater than or equal to the first threshold, all TBs are retransmitted in the reserved resources.

Optionally, the radio frequency unit 1901 is further used for:

If the TB transmitted before the time domain position of the first TB that fails to be transmitted is successfully transmitted, the first TB that fails to be transmitted is retransmitted using the reserved resources corresponding to the successfully transmitted TB, or the successfully transmitted TB is retransmitted.

Optionally, the radio frequency unit 1901 is specifically used for:

In a case where the priority of the first TB that fails to transmit is higher than the priority of the TB that succeeds to transmit, the first TB that fails to transmit is retransmitted using the reserved resources corresponding to the TB that succeeds to transmit.

Optionally, the radio frequency unit 1901 is further used to: retransmit the TB that failed to be transmitted or transmit other TBs in the reserved resources corresponding to the TB that was successfully transmitted.

Optionally, the radio frequency unit 1901 is specifically used for:

The reserved resources corresponding to the successfully transmitted TBs are used to retransmit at least one of the following TBs that failed to transmit:

The TB with the highest priority among the TBs that failed to transmit;

The TB with the most retransmissions among the TBs that failed to transmit;

Among the TBs that failed to be transferred, the TB with the longest time since the last transfer.

Optionally, the radio frequency unit 1901 is specifically used for:

If the other TBs exist, the other TBs are preferentially transmitted in the reserved resources corresponding to the successfully transmitted TBs;

or,

According to the priorities and/or urgency of the TB whose transmission fails and the other TBs, it is determined to retransmit the TB whose transmission fails or to transmit other TBs using the reserved resources corresponding to the TB whose transmission succeeds.

Optionally, the radio frequency unit 1901 is further used for:

If the TB transmitted after the time domain position of the last TB that failed to be transmitted is transmitted successfully, the last TB that failed to be transmitted is retransmitted in the reserved resources corresponding to the successfully transmitted TB, or the successfully transmitted TB is retransmitted.

Optionally, the radio frequency unit 1901 is specifically used for:

If all TBs transmitted by the transmission resource are successfully transmitted, and the priority of the other TBs is higher than the priority of the TBs transmitted by the transmission resource, the other TBs are transmitted in the reserved resources.

Optionally, the failure to receive a response message for the TB transmitted by the transmission resource includes at least one of the following:

When hybrid automatic repeat request HARQ feedback is not enabled, no response message is received;

In the case of HARQ feedback enabling NACK only, no NACK response message is received;

In case of HARQ feedback enabling ACK and NACK, no ACK response message or NACK response message is received.

Optionally, the at least two reserved time slots are at least two consecutive time slots.

Optionally, the radio frequency unit 1901 is specifically configured to perform one of the following:

Sending at least one SCI on a transmission resource of the sidelink, the SCI indicating reserved resources in units of at least two time slots;

An SCI is sent in each time slot corresponding to the transmission resources of the side link, and the SCI indicates the reserved resources in units of each time slot.

In an embodiment of the present application, the terminal may send indication information indicating reserved resources on the transmission resource. Among them, the terminal may reserve resources of multiple time slots and transmit TB on the resources of the reserved multiple time slots. The embodiment of the present application provides a method for the terminal to transmit TB when resources of at least two time slots are reserved, which can achieve continuous transmission and avoid the situation where transmission is discontinuous and channel occupancy is lost due to transmission only in part of the reserved time slot resources, thereby ensuring transmission efficiency.

An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned transmission method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The embodiments of the present application further provide a computer program/program product, which is stored in a storage medium and is executed by at least one processor to implement the various processes of the above-mentioned transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

An embodiment of the present application also provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the transmission method as described above.

It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, disk, CD), and includes a number of instructions for a terminal (which can be a mobile phone, computer, server, air conditioner, or network equipment, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims (30)

A transmission method, comprising: The terminal sends indication information on the transmission resources of the side link, where the indication information is used to indicate the reserved resources; The terminal transmits a transport block TB in the reserved resources; The reserved resources are resources of at least two time slots reserved. The method according to claim 1, wherein transmitting a TB in the reserved resources comprises at least one of the following: If at least one TB among the TBs transmitted by the transmission resource fails to be transmitted, retransmitting at least part of the TBs in the reserved resources; If all TBs transmitted by the transmission resource are successfully transmitted, other TBs are transmitted in the reserved resources, where the other TBs are TBs other than the TBs transmitted by the transmission resource; If no response message is received for the TB transmitted using the transmission resource, all TBs are retransmitted using the reserved resource. The method according to claim 2, wherein the method further comprises: receiving a response message for the TB transmitted by the transmission resource; Determine, according to the response message: whether the TB transmitted by the transmission resource fails to be transmitted, or whether the TB transmitted by the transmission resource succeeds to be transmitted; The response message includes: a negative acknowledgement NACK response message or a positive acknowledgement ACK response message. The method according to claim 2, wherein the retransmitting at least part of the TB in the reserved resources comprises one of the following: retransmitting in the reserved resources all TBs between the first TB whose transmission fails and the last TB whose transmission fails; retransmitting the TB whose transmission failed in the reserved resources; When the number of TBs with failed transmission is greater than or equal to the first threshold, all TBs are retransmitted in the reserved resources. The method according to claim 4, wherein the method further comprises: If the TB transmitted before the time domain position of the first TB that fails to be transmitted is successfully transmitted, the first TB that fails to be transmitted is retransmitted using the reserved resources corresponding to the successfully transmitted TB, or the successfully transmitted TB is retransmitted. The method according to claim 5, wherein retransmitting the first TB whose transmission failed in the reserved resources corresponding to the TB whose transmission succeeded comprises: In the case that the priority of the first TB that fails to transmit is higher than the priority of the TB that succeeds to transmit, the first TB that fails to transmit is retransmitted using the reserved resources corresponding to the TB that succeeds to transmit. The method according to claim 4, wherein, if the TB whose transmission failed is retransmitted in the reserved resources, the method further comprises: The TB that failed to be transmitted is retransmitted in the reserved resources corresponding to the TB that was successfully transmitted, or other TBs are transmitted. The method according to claim 7, wherein the retransmitting the TB that failed to transmit using the reserved resources corresponding to the TB that successfully transmitted comprises: The reserved resources corresponding to the successfully transmitted TBs are used to retransmit at least one of the following TBs that failed to transmit: The TB with the highest priority among the TBs that failed to transmit; The TB with the most retransmissions among the TBs that failed to transmit; Among the TBs that failed to be transferred, the TB with the longest time since the last transfer. The method according to claim 7, wherein the retransmitting the TB that failed to be transmitted or transmitting other TBs in the reserved resources corresponding to the successfully transmitted TB comprises: If the other TBs exist, the other TBs are preferentially transmitted in the reserved resources corresponding to the successfully transmitted TBs; or, According to the priorities and/or urgency of the TB whose transmission fails and the other TBs, it is determined to retransmit the TB whose transmission fails or to transmit other TBs using the reserved resources corresponding to the TB whose transmission succeeds. The method according to claim 4, wherein the method further comprises: If the TB transmitted after the time domain position of the last TB that failed to be transmitted is transmitted successfully, the last TB that failed to be transmitted is retransmitted in the reserved resources corresponding to the successfully transmitted TB, or the successfully transmitted TB is retransmitted. The method according to claim 2, wherein if all TBs transmitted by the transmission resource are successfully transmitted, transmitting other TBs in the reserved resource comprises: If all TBs transmitted by the transmission resource are successfully transmitted, and the priority of the other TBs is higher than the priority of the TBs transmitted by the transmission resource, the other TBs are transmitted in the reserved resources. The method according to claim 2, wherein the failure to receive a response message for the TB transmitted by the transmission resource comprises at least one of the following: When hybrid automatic repeat request HARQ feedback is not enabled, no response message is received; In the case of HARQ feedback enabling NACK only, no NACK response message is received; In case of HARQ feedback enabling ACK and NACK, no ACK response message or NACK response message is received. The method according to claim 1, wherein the reserved at least two time slots are at least two consecutive time slots. The method according to claim 1, wherein the sending of the indication information on the transmission resource of the side link comprises one of the following: Sending at least one sidelink control information SCI on a transmission resource of the sidelink, the SCI indicating a reserved resource in units of at least two time slots; An SCI is sent in each time slot corresponding to the transmission resources of the side link, and the SCI indicates the reserved resources in units of each time slot. A transmission device, comprising: A sending module, used to send indication information on the transmission resources of the side link, where the indication information is used to indicate the reserved resources; A first transmission module, configured to transmit the TB in the reserved resources; The reserved resources are resources of at least two time slots reserved. The apparatus according to claim 15, wherein the first transmission module comprises at least one of the following: A first transmission unit, configured to retransmit at least part of the TBs in the reserved resources if at least one TB in the TBs transmitted by the transmission resource fails to be transmitted; A second transmission unit, configured to transmit other TBs in the reserved resources if all TBs transmitted by the transmission resource are successfully transmitted, wherein the other TBs are TBs other than the TBs transmitted by the transmission resource; The third transmission unit is configured to retransmit all TBs in the reserved resources if no response message is received for the TBs transmitted using the transmission resources. The device according to claim 16, wherein the device further comprises: A first receiving module, configured to receive a response message to the TB transmitted by the transmission resource; A determination module, configured to determine, according to the response message, whether the TB transmitted by the transmission resource fails to be transmitted, or whether the TB transmitted by the transmission resource is successfully transmitted; The response message includes: a negative acknowledgement NACK response message or a positive acknowledgement ACK response message. The apparatus according to claim 16, wherein the first transmission unit is specifically configured to perform one of the following: retransmitting all TBs between the first TB whose transmission fails and the last TB whose transmission fails in the reserved resources; retransmitting the TB whose transmission failed in the reserved resources; When the number of TBs with failed transmission is greater than or equal to the first threshold, all TBs are retransmitted in the reserved resources. The device according to claim 18, wherein the device further comprises: The second transmission module is used to retransmit the first TB that failed to be transmitted, or retransmit the successfully transmitted TB, using the reserved resources corresponding to the successfully transmitted TB if the TB transmitted before the time domain position of the first TB that failed to be transmitted is successfully transmitted. The device according to claim 19, wherein the second transmission module is specifically configured to: In a case where the priority of the first TB that fails to transmit is higher than the priority of the TB that succeeds to transmit, the first TB that fails to transmit is retransmitted using the reserved resources corresponding to the TB that succeeds to transmit. The device according to claim 18, wherein the device further comprises: The third transmission module is used to retransmit the TB that failed to be transmitted or transmit other TBs in the reserved resources corresponding to the TB that was successfully transmitted. The device according to claim 21, wherein the third transmission module is specifically configured to: The reserved resources corresponding to the successfully transmitted TBs are used to retransmit at least one of the following TBs that failed to transmit: The TB with the highest priority among the TBs that failed to transmit; The TB with the most retransmissions among the TBs that failed to transmit; Among the TBs that failed to be transferred, the TB with the longest time since the last transfer. The device according to claim 21, wherein the third transmission module is specifically configured to: If the other TBs exist, the other TBs are preferentially transmitted in the reserved resources corresponding to the successfully transmitted TBs; or, According to the priorities and/or urgency of the TB whose transmission fails and the other TBs, it is determined to retransmit the TB whose transmission fails or to transmit other TBs using the reserved resources corresponding to the TB whose transmission succeeds. The device according to claim 18, wherein the device further comprises: The fourth transmission module is used to retransmit the last TB that failed to be transmitted, or retransmit the successfully transmitted TB, in the reserved resources corresponding to the successfully transmitted TB, if the TB transmitted after the time domain position of the last TB that failed to be transmitted is successfully transmitted. The device according to claim 16, wherein the second transmission unit is specifically configured to: If all TBs transmitted by the transmission resource are successfully transmitted, and the priority of the other TBs is higher than the priority of the TBs transmitted by the transmission resource, the other TBs are transmitted in the reserved resources. The apparatus according to claim 16, wherein the failure to receive a response message for the TB transmitted by the transmission resource comprises at least one of the following: When hybrid automatic repeat request HARQ feedback is not enabled, no response message is received; In the case of HARQ feedback enabling NACK only, no NACK response message is received; In case of HARQ feedback enabling ACK and NACK, no ACK response message or NACK response message is received. The apparatus according to claim 15, wherein the reserved at least two time slots are at least two consecutive time slots. The apparatus according to claim 18, wherein the sending module is specifically configured to perform one of the following: Sending at least one SCI on a transmission resource of the sidelink, the SCI indicating reserved resources in units of at least two time slots; An SCI is sent in each time slot corresponding to the transmission resource of the side link, and the SCI indicates the reserved resources in units of each time slot. A terminal comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the information transmission method according to any one of claims 1 to 14 are implemented. A readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the transmission method according to any one of claims 1 to 14 are implemented.