CN111200487B - Hybrid automatic repeat request acknowledgement HARQ-ACK transmission method and device - Google Patents

Abstract

The present disclosure relates to a HARQ-ACK transmission method and device for hybrid automatic repeat request acknowledgement, which can be applied to user equipment UE. The method includes: when a collision occurs between the HARQ-ACKs of multiple unicast transmissions, selecting a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the multiple unicast transmissions; transmitting the first HARQ-ACK. According to the method and device of the present disclosure, by setting the first preset condition, when a collision occurs between HARQ-ACKs of multiple unicast transmissions, the HARQ-ACK that meets the first preset condition is selected for transmission, thereby realizing multiple The HARQ-ACK can still be transmitted normally when the HARQ-ACK of the unicast transmission collide.

Description

Hybrid automatic repeat request acknowledgement HARQ-ACK transmission method and device

technical field

The present disclosure relates to the field of communication technologies, and in particular, to a method and device for transmitting HARQ-ACK for HARQ-ACK acknowledgement.

Background technique

For the UE (User Equipment, user equipment) side, the current system will not have multiple unicast transmissions at the same time, nor will unicast and multicast (groupcast) coexist at the same time. Support HARQ-ACK (Hybrid Automatic Repeat Request Acknowledgement) for multicast.

HARQ is a technology that combines forward error correction coding (FEC) and automatic repeat request (ARQ), and decides whether to retransmit through ACK/NACK. The key words of HARQ are storage, request retransmission, combined demodulation. The retransmission of HARQ is based on ACK/NACK, and the ACK/NACK report of HARQ is based on a 1-bit signal (signaling) for fast and frequent reporting.

At the RAN1-94b conference, HARQ-ACK for both unicast and multicast transmission should be supported on the sidelink that has passed NR (New Radio) V2X (Vehicle-to-Everything, Vehicle-to-Everything). These two HARQ feedback (feedback) methods are carefully studied in R16.

In the NR research of R15 and the previous LTE (Long Term Evolution, Long Term Evolution) research, there is only HARQ feedback for unicast. In the research of R15, there are discussions on collision rules for unicast HARQ feedback and SR (Scheduling Request, scheduling request) and CSI (Channel State Information, channel state information) feedback.

Currently, there are no collision rules for HARQ-ACKs that support both unicast and multicast transmissions on the side link of NR V2X, and collision rules for HARQ-ACKs for multiple unicast transmissions.

SUMMARY OF THE INVENTION

In view of this, the present disclosure proposes a HARQ-ACK transmission method and device for HARQ-ACK acknowledgement, so that the HARQ-ACK can still be transmitted normally when multiple HARQ-ACKs collide.

According to an aspect of the present disclosure, there is provided a HARQ-ACK transmission method for HARQ-ACK, the method is applied to user equipment UE, and the method includes:

When a collision occurs between HARQ-ACKs of multiple unicast transmissions, selecting a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of multiple unicast transmissions;

The first HARQ-ACK is transmitted.

According to another aspect of the present disclosure, a method for transmitting HARQ-ACK acknowledgment with automatic repeat request is provided, the method is applied to user equipment UE, and the method includes:

When a collision occurs between the HARQ-ACKs of multiple multicast transmissions, selecting a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the multiple multicast transmissions;

The first HARQ-ACK is transmitted.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission method for HARQ-ACK, the method is applied to user equipment UE, and the method includes:

When a collision occurs between the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission, the HARQ with the highest priority of the corresponding transmission is selected from the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission -ACK for transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission method for HARQ-ACK, the method is applied to user equipment UE, and the method includes:

When a collision occurs between the HARQ-ACKs of the multiple unicast transmissions and the HARQ-ACKs of the multicast transmission, a first HARQ-ACK that meets the first preset condition is selected from the HARQ-ACKs of the multiple unicast transmissions ACK;

From the first HARQ-ACK and the HARQ-ACK of the multicast transmission, the corresponding transmission priority or the HARQ-ACK with the highest priority of the PSSCH is selected for transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission method for HARQ-ACK, the method is applied to user equipment UE, and the method includes:

When a collision occurs between HARQ-ACKs of unicast transmission and HARQ-ACKs of multiple multicast transmissions, a first HARQ-ACK that meets a first preset condition is selected from the HARQ-ACKs of multiple multicast transmissions ACK;

From the first HARQ-ACK and the HARQ-ACK of unicast transmission, the HARQ-ACK with the corresponding transmission priority or the highest priority of the PSSCH is selected for transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission method for HARQ-ACK, the method is applied to user equipment UE, and the method includes:

When a collision occurs between the HARQ-ACK and the channel state information CSI feedback, select one of the HARQ-ACK or the CSI feedback for transmission according to a second preset condition;

The HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission method for HARQ-ACK, the method is applied to user equipment UE, and the method includes:

When a collision occurs between the HARQ-ACK and the channel state information SR, select one of the HARQ-ACK or the SR for transmission according to the third preset condition;

The HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission apparatus for HARQ-ACK acknowledgement, the apparatus is applied to user equipment UE, and the apparatus includes:

A first selection module, configured to select a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the plurality of unicast transmissions when a collision occurs between the HARQ-ACKs of the plurality of unicast transmissions ;

A first transmission module, configured to transmit the first HARQ-ACK.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission apparatus for HARQ-ACK acknowledgement, the apparatus is applied to user equipment UE, and the apparatus includes:

A third selection module, configured to select a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the multiple multicast transmissions when a collision occurs between the HARQ-ACKs of the multiple multicast transmissions ;

A second transmission module, configured to transmit the first HARQ-ACK.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission apparatus for HARQ-ACK acknowledgement, the apparatus is applied to user equipment UE, and the apparatus includes:

The fifth selection module is used to select the corresponding HARQ-ACK from the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission when a collision occurs between the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission The HARQ-ACK with the highest priority of transmission is transmitted.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission apparatus for HARQ-ACK acknowledgement, the apparatus is applied to user equipment UE, and the apparatus includes:

A seventh selection module, configured to select from the HARQ-ACKs of the plurality of unicast transmissions that conform to the first prediction when a collision occurs between the HARQ-ACKs of the plurality of unicast transmissions and the HARQ-ACKs of the multicast transmissions. Conditioned first HARQ-ACK;

The eighth selection module is configured to select, from the first HARQ-ACK and the HARQ-ACK of the multicast transmission, the corresponding transmission priority or the HARQ-ACK with the highest PSSCH priority for transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission apparatus for HARQ-ACK acknowledgement, the apparatus is applied to user equipment UE, and the apparatus includes:

A ninth selection module, configured to select HARQ-ACKs that conform to the first prediction from the HARQ-ACKs of the plurality of multicast transmissions when a collision occurs between the HARQ-ACKs of the unicast transmission and the HARQ-ACKs of the plurality of multicast transmissions. Conditioned first HARQ-ACK;

The tenth selection module is configured to select the HARQ-ACK with the highest priority of the corresponding transmission or the HARQ-ACK with the highest priority of the PSSCH from the first HARQ-ACK and the HARQ-ACK of unicast transmission for transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission apparatus for HARQ-ACK acknowledgement, the apparatus is applied to user equipment UE, and the apparatus includes:

An eleventh selection module, configured to select one of the HARQ-ACK or the CSI feedback for transmission according to the second preset condition when a collision occurs between the HARQ-ACK and the channel state information CSI feedback;

The HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission.

According to another aspect of the present disclosure, there is provided a HARQ-ACK transmission apparatus for HARQ-ACK acknowledgement, the apparatus is applied to user equipment UE, and the apparatus includes:

A twelfth selection module, configured to select one of the HARQ-ACK or the SR for transmission according to a third preset condition when a collision occurs between the HARQ-ACK and the channel state information SR;

The HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission.

According to another aspect of the present disclosure, there is provided a hybrid automatic repeat request acknowledgement HARQ-ACK transmission apparatus, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to Perform the above method.

According to another aspect of the present disclosure, there is provided a non-volatile computer-readable storage medium having computer program instructions stored thereon, wherein the computer program instructions, when executed by a processor, implement the above-described method.

According to the method of the above-mentioned embodiment of the present disclosure, by setting the first preset condition, when a collision occurs between HARQ-ACKs of multiple unicast transmissions, the HARQ-ACK that meets the first preset condition is selected for transmission, thereby realizing When the HARQ-ACKs of multiple unicast transmissions collide, the HARQ-ACKs can still be transmitted normally.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure, and together with the description, serve to explain the principles of the disclosure.

FIG. 1 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 2 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 3 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 4 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 5 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 6 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 7 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 8 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 9 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 10 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 11 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 12 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 13 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 14 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 15 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 16 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 17 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 18 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 19 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 20 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

FIG. 21 is a block diagram of an apparatus 800 for HARQ-ACK transmission according to an exemplary embodiment.

Detailed ways

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures denote elements that have the same or similar functions. While various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following detailed description. It will be understood by those skilled in the art that the present disclosure may be practiced without certain specific details. In some instances, methods, means, components and circuits well known to those skilled in the art have not been described in detail so as not to obscure the subject matter of the present disclosure.

In V2X communication, HARQ technology can be used for the transmission and reception of side link data, and whether to retransmit is determined through ACK/NACK. At the RAN1-94b conference, HARQ-ACK feedback for both unicast and multicast transmissions should be supported on the side link that has passed NR V2X. The present disclosure addresses the problem of how to transmit HARQ-ACKs when HARQ-ACKs of unicast and multicast transmission collide on the side link of NR V2X, and when HARQ-ACKs of multiple unicast/multicast transmissions collide.

The HARQ-ACK information may be the ACK or NACK information corresponding to the unicast PSSCH (Pysical Sidelink Share Channel, physical side link shared channel) or PSCCH (Pysical Sidelink Control Channel, physical side link control channel), or it may be The ACK or NACK information corresponding to the PSSCH or PSCCH of the multicast transmission, or the ACK or NACK information corresponding to the PSSCH or PSCCH of the unicast transmission and the multicast transmission at the same time.

Wherein, the HARQ-ACK information can be obtained from PSCCH or PSSCH or PSFCH (Physical Sidelink Feedback Channel, Physical Sidelink Feedback Channel) or PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) or PUSCH (Physical Uplink Shared Channel, Physical Uplink Channel) shared channel) to carry.

The definition of the Uu link is the wireless protocol between the user equipment and the eNB (evolved NodeB), or the wireless communication protocol between the user equipment and the gNB, or the wireless communication protocol between the user equipment and the base station. Sidelink refers to a communication protocol between user equipment and user equipment without the participation of base stations.

The high-level signaling that appears in the following may specifically be RRC (Radio Resource Control, radio resource control) signaling or MAC-CE (MAC Control Element, MAC control element) signaling.

If the HARQ-ACK, SR, and CSI feedback that appear in the following text are fed through UCI (uplink control information, uplink control information) or SL-UCI (sidelink uplink control information, side link uplink control information) or SFCI (Sidelink feedback control information, side chain channel feedback control information), different PUCCH formats or SL-PUCCH formats or SFCI formats can be used. Wherein, different PUCCH formats, SL-PUCCH formats or SFCI formats may have respective requirements for the number of bearer bits and or the number of symbols occupied by transmission. The present disclosure is not specifically limited, and is applicable to situations where various PUCCH formats or SL-PUCCH formats collide.

The collision between HARQ-ACKs that occurs hereinafter may be applicable to the case where the base station does not configure simultaneous-HARQ resources and/or simultaneous-HARQ indications. The simultaneous-HARQ resource is used to carry the collided HARQ-ACK; the simultaneous-HARQ indication can be used to indicate that the UE can place the collided HARQ-ACK on the simultaneous-HARQ resource to carry.

The collision between HARQ-ACK and CSI feedback that occurs hereinafter may be applicable to the case where the base station does not configure the simultaneous-HARQ-CSI resource and/or the simultaneous-HARQ-CSI indication. Among them, the simultaneous-HARQ-CSI resource is used to carry the collided HARQ-ACK and CSI feedback; the simultaneous-HARQ-CSI indication can be used to indicate that the UE can put the collided HARQ-ACK and CSI feedback in the simultaneous- HARQ-CSI resources are carried up.

The collision between HARQ-ACK and SR that occurs hereinafter may be applicable to the case where the base station does not configure the simultaneous-HARQ-SR resource and/or the simultaneous-HARQ-SR indication. Among them, the simultaneous-HARQ-SR resource is used to carry the collided HARQ-ACK and SR; the simultaneous-HARQ-SR indication can be used to indicate that the UE can put the collided HARQ-ACK and SR in the simultaneous-HARQ- SR resources come up to bear.

In a possible implementation manner, the present disclosure provides a HARQ-ACK transmission method for HARQ-ACK acknowledgment, the method is applied to user equipment UE, and the method of this embodiment can be applied to multiple unicast transmissions Scenarios where collisions occur between HARQ-ACKs.

FIG. 1 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure. As shown in Figure 1, the method may include:

Step S11, when a collision occurs between the HARQ-ACKs of multiple unicast transmissions, select a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the multiple unicast transmissions;

Step S12, transmitting the first HARQ-ACK.

The first preset condition may be that the physical side link shared channel PSSCH corresponding to HARQ-ACK has the highest priority, the time domain resource corresponding to HARQ-ACK or the first symbol of the channel is the most advanced, and so on. The PSSCH corresponding to the HARQ-ACK may refer to the channel bearing the HARQ-ACK, and the time domain resource or channel corresponding to the HARQ-ACK may refer to the time domain resource or channel bearing the HARQ-ACK.

Among them, the priority of the PSSCH corresponding to the HARQ-ACK can be determined by the PPPP (ProSe Per-Packet Priority, short-range communication data packet priority) corresponding to the transmission carried by the PSSCH. The lower the value of PPPP, the lower the value of the corresponding transmission. The higher the priority is, the PPPP can be indicated by SCI (Sidelink Control Information, side link control information) or high-level signaling. The value of PPPP may be related to at least one parameter of QoS priority (priority), delay (latency), reliability (reliability) and minimum required communication range (minimum required communication range).

The collision may be that the time-frequency resources or channels carrying HARQ-ACK overlap or partially overlap in time, or it may be that the time-frequency resources or channels carrying HARQ-ACK overlap in time and frequency domains, or Partially overlapping.

In an example, taking the first preset condition that the priority of the PSSCH corresponding to the HARQ-ACK is the highest as an example, when the HARQ-ACKs of the unicast transmission on multiple side links of the UE collide, the UE can pass The PPPP corresponding to the transmission carried by the PSSCH corresponding to the HARQ-ACK determines the priority of the PSSCH corresponding to the HARQ-ACK of multiple unicast transmissions, and the HARQ-ACK of the unicast transmission carried by the PSSCH with the highest priority is selected as the first One HARQ-ACK, and transmit the first HARQ-ACK to the corresponding UE or base station. For example, the HARQ-ACKs (HARQ-ACK1, HARQ-ACK2, HARQ-ACK3) of unicast transmission on the three side links of the UE collide, and the corresponding HARQ-ACK1, HARQ-ACK2, and HARQ-ACK3 The PPPPs corresponding to the transmission carried by the PSSCH are 1, 2, and 3, respectively, and the first HARQ-ACK is HARQ-ACK1.

Wherein, if there is a situation in which the priorities of the PSCCHs corresponding to multiple HARQ-ACKs are side by side, the first HARQ-ACK can be selected based on one of the following criteria:

1. Select the time-frequency resource carrying the HARQ-ACK that collided or the time-frequency resource with the most advanced first symbol in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

2. Select the time-frequency resource carrying the HARQ-ACK in the collision or the time-frequency resource with the last symbol in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

3. Select the time-frequency resource that collides with the HARQ-ACK bearing or the time-frequency resource that occupies the largest number of symbols in the time domain in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

4. Select the time-frequency resource that collides with the HARQ-ACK bearing or the time-frequency resource that occupies the least number of symbols in the time domain in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

5. Select any one time-frequency resource or HARQ-ACK carried by the collided time-frequency resource or channel carrying the HARQ-ACK as the first HARQ-ACK.

In another example, the first preset condition is that the time domain resource corresponding to HARQ-ACK or the first symbol of the channel is at the front as an example, when a single signal on multiple side links of the UE When the transmitted HARQ-ACK collides, the UE can determine the time domain resource corresponding to each HARQ-ACK or the position of the first symbol of the channel, for example, the position of the first symbol in the time slot, the first symbol The HARQ-ACK with the highest position of each symbol in the time slot is used as the first HARQ-ACK, and the first HARQ-ACK is transmitted to the corresponding UE or the base station.

It should be noted that although the HARQ-ACK transmission method is described above by taking the priority and the position of the first symbol as examples, those skilled in the art can understand that the present disclosure should not be limited thereto. In fact, the user can flexibly set the first preset condition according to personal preferences and/or actual application scenarios, as long as normal transmission of HARQ-ACK can be achieved.

According to the method of the above-mentioned embodiment of the present disclosure, by setting the first preset condition, when a collision occurs between HARQ-ACKs of multiple unicast transmissions, the HARQ-ACK that meets the first preset condition is selected for transmission, thereby realizing When the HARQ-ACKs of multiple unicast transmissions collide, the HARQ-ACKs can still be transmitted normally.

FIG. 2 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

In a possible implementation manner, as shown in FIG. 2 , the method may further include:

Step S13, if the time domain resources corresponding to the HARQ-ACKs of multiple unicast transmissions or the positions of the first symbols of the channels are the same, select the corresponding time domain duration (duration) in the HARQ-ACKs of multiple unicast transmissions The longest or shortest HARQ-ACK is used as the first HARQ-ACK, or any one HARQ-ACK among multiple unicast transmission HARQ-ACKs is selected as the first HARQ-ACK.

In an example, the time domain resources or the first symbol of the channel corresponding to the HARQ-ACKs of multiple unicast transmissions are in the same position (that is to say, they are tied at the frontmost position), the UE can The time domain duration is used to determine how to transmit the HARQ-ACK. For example, the HARQ-ACK with the longest or shortest time domain duration may be selected as the first HARQ-ACK.

In another example, the time domain resources or the first symbol of the channel corresponding to the HARQ-ACKs of multiple unicast transmissions are in the same position (that is to say, they are tied at the front), and the UE can randomly select any HARQ-ACK as the first symbol of the channel. The first HARQ-ACK, that is, the UE may transmit any one of the HARQ-ACKs of multiple unicast transmissions based on the UE implementation.

With the HARQ-ACK transmission method in the above embodiment, the time domain resources or the first symbol of the channel corresponding to multiple unicast transmission HARQ-ACKs are at the same position, and the normal transmission of HARQ-ACK can still be achieved.

FIG. 3 shows a flowchart of a method for transmitting HARQ-ACK for HARQ-ACK acknowledgment according to an embodiment of the present disclosure.

As shown in FIG. 3, in a possible implementation manner, the method may further include:

Step S14: Discard HARQ-ACKs except the first HARQ-ACK among the HARQ-ACKs of the plurality of unicast transmissions.

or,

Step S15, the HARQ-ACKs except the first HARQ-ACK among the HARQ-ACKs of the plurality of unicast transmissions are postponed to the next transmittable opportunity for transmission in descending order according to the priority of the PSSCH.

or,

Step S16, the HARQ-ACKs except the first HARQ-ACK in the HARQ-ACKs of the multiple unicast transmissions are postponed in sequence from front to back according to the position of the time domain resource or the first symbol of the channel. The next transmittable opportunity to transmit.

Wherein, step S14, step S15, and step S16 may be executed after step S12.

For step S14, for example, the HARQ-ACKs (HARQ-ACK1, HARQ-ACK2, HARQ-ACK3) of unicast transmission on the 3 side links of the UE collide, HARQ-ACK1, HARQ-ACK2, HARQ The PPPPs corresponding to the transmission carried by the PSSCH corresponding to ACK3 are 1, 2, and 3, respectively, and the first HARQ-ACK is HARQ-ACK1. The UE may transmit HARQ-ACK1 and discard HARQ-ACK2 and HARQ-ACK3.

The next transmissible opportunity may be to obtain the time domain and frequency domain location of the next HARQ-ACK resource that can be used for transmission according to the periodic configuration of the periodic time-frequency resources used to carry HARQ-ACK as the next transmissible opportunity. transmission opportunity.

For step S15, still taking the above example as an example, for HARQ-ACK2 and HARQ-ACK3, when the next transmissible opportunity arrives, if the transmission condition is met, HARQ-ACK2 is transmitted, otherwise, it is postponed to the next transmission opportunity; After the transmission of HARQ-ACK2 is completed, when the next transmission opportunity arrives, if the transmission conditions are met, HARQ-ACK3 is transmitted, otherwise, it is postponed to the next transmission opportunity.

For step S16, for example, the HARQ-ACKs (HARQ-ACK1, HARQ-ACK2, HARQ-ACK3) of unicast transmission on the three side links of the UE collide, HARQ-ACK1, HARQ-ACK2, HARQ - The position of the first symbol of the time domain resource corresponding to ACK3: HARQ-ACK1 is the most advanced, and HARQ-ACK2 is earlier than HARQ-ACK3. The UE can transmit HARQ-ACK1. For HARQ-ACK2 and HARQ-ACK3, when the next transmittable opportunity arrives, if the transmission conditions are met, the HARQ-ACK2 can be transmitted, otherwise, it will be postponed to the next transmission opportunity; in HARQ-ACK2 transmission After that, when the next transmission opportunity arrives, if the transmission conditions are met, HARQ-ACK3 is transmitted, otherwise, it is postponed to the next transmission opportunity

Through the HARQ-ACK transmission method of the above-mentioned embodiment, when a collision occurs between HARQ-ACKs of multiple unicast transmissions, normal transmission of all HARQ-ACKs can be realized.

In a possible implementation manner, the method may further include: assigning HARQ-ACKs other than the first HARQ-ACK among the HARQ-ACKs of the plurality of unicast transmissions according to the duration of the time domain The transmission is deferred in order to the next transmittable opportunity. For example, the transmission may be postponed to the next transmittable opportunity according to the duration of the time domain from long to short, or the transmission may be postponed to the next transmittable opportunity from short to long according to the duration of the time domain.

FIG. 4 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

As shown in FIG. 4, in a possible implementation manner, the method may further include:

Step S17, when a collision occurs between the HARQ-ACKs of multiple unicast transmissions, multiplexing the multiple HARQ-ACKs and the destination address corresponding to each HARQ-ACK to the physical uplink control channel PUCCH for processing. transmission.

The destination address corresponding to the HARQ-ACK may refer to the address where the UE sends the HARQ-ACK to another UE or the source user of the PSCCH corresponding to the HARQ-ACK. Multiplexing into PUCCH may refer to multiplexing into PSCCH or UCI (Uplink Control Information, uplink control information) or SL-UCI (Sidelink Uplink Control Information, side link uplink control information) or SFCI.

For example, when HARQ-ACKs of unicast transmissions on multiple sidelinks of the UE collide, the UE may determine the addresses of the UEs connected to the other ends of the multiple sidelinks of the UE, for example, multiple The side link includes side link 1, side link 2, and side link 3, and the other end is connected to UE1, UE2, and UE3 respectively. HARQ for unicast transmission on side link 1, side link 2 and side link 3 -ACKs are HARQ-ACK1, HARQ-ACK2, and HARQ-ACK3, respectively. Then, the destination address corresponding to HARQ-ACK1 is the address Destination-ID1 of UE1, the destination address corresponding to HARQ-ACK2 is the address Destination-ID2 of UE2, and the destination address corresponding to HARQ-ACK3 is the address Destination-ID3 of UE3. The UE may multiplex HARQ-ACK1, HARQ-ACK2, HARQ-ACK3, and Destination-ID1, Destination-ID2, and Destination-ID3 in SL-UCI or SFCI, and transmit them to UE1, UE2, and UE3.

SL-UCI or SFCI:

Destination-ID field-1: 1

HARQ-ACK field-1: 0

Destination-ID field-2: 2

HARQ-ACK field-2: 1

Destination-ID field-3: 3

HARQ-ACK field-3: 1

In this way, after receiving the SL-UCI or SFCI, UE1, UE2, and UE3 go to the HARQ-ACK field corresponding to the Destination-ID to read the HARQ-ACK corresponding to the previous unicast transmission. For example, U1 goes to the HARQ-ACK field-1 corresponding to the Destination-ID field-1 to read the HARQ-ACK corresponding to the previous unicast transmission. U2 goes to the HARQ-ACK field-2 corresponding to the Destination-ID field-2 to read the HARQ-ACK corresponding to the previous unicast transmission. U3 goes to the HARQ-ACK field-3 corresponding to the Destination-ID field-3 to read the HARQ-ACK corresponding to the previous unicast transmission.

In a possible implementation manner, the source address (Source ID) of the UE may also be multiplexed into the PUCCH.

Through the HARQ-ACK transmission method of the above-mentioned embodiment, when a collision occurs between HARQ-ACKs of multiple unicast transmissions, normal transmission of all HARQ-ACKs can be realized.

In a possible implementation manner, the present disclosure also provides a HARQ-ACK transmission method for HARQ-ACK acknowledgment, the method is applied to user equipment UE, and the method of this embodiment is applied to multiple multicast transmissions In the scenario where a collision occurs between HARQ-ACKs of multiple unicast transmissions, for the specific implementation in this scenario, please refer to the above-mentioned Figure 1-Figure 4 for the scenario in which multiple unicast transmission HARQ-ACKs collide. In this embodiment , the specific process will not be described in detail.

FIG. 5 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure. As shown in FIG. 5 , in a scenario where a collision occurs between HARQ-ACKs of multiple multicast transmissions, the method may include:

Step S21, when a collision occurs between the HARQ-ACKs of multiple multicast transmissions, select a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the multiple multicast transmissions;

Step S22, transmitting the first HARQ-ACK.

In a possible implementation manner, the first preset condition is any one of the following: the physical side link shared channel PSSCH corresponding to HARQ-ACK has the highest priority, and the time domain resource corresponding to HARQ-ACK has the highest priority. The first symbol is positioned first.

According to the method of the above embodiment of the present disclosure, by setting the first preset condition, when a collision occurs between HARQ-ACKs of multiple multicast transmissions, the HARQ-ACK that meets the first preset condition is selected for transmission, thereby realizing When the HARQ-ACKs of multiple multicast transmissions collide, the HARQ-ACKs can still be transmitted normally.

Wherein, if there is a situation in which the priorities of the PSCCHs corresponding to multiple HARQ-ACKs are side by side, the first HARQ-ACK can be selected based on one of the following criteria:

1. Select the time-frequency resource carrying the HARQ-ACK that collided or the time-frequency resource with the most advanced first symbol in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

2. Select the time-frequency resource carrying the HARQ-ACK in the collision or the time-frequency resource with the last symbol in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

3. Select the time-frequency resource that collides with the HARQ-ACK bearing or the time-frequency resource that occupies the largest number of symbols in the time domain in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

4. Select the time-frequency resource that collides with the HARQ-ACK bearing or the time-frequency resource that occupies the least number of symbols in the time domain in the channel or the HARQ-ACK carried by the channel as the first HARQ-ACK;

5. Select any one time-frequency resource or HARQ-ACK carried by the collided time-frequency resource or channel carrying the HARQ-ACK as the first HARQ-ACK.

In a possible implementation, the method further includes:

Step S23, if the positions of the first symbols of the time domain resources corresponding to the HARQ-ACKs of multiple multicast transmissions are the same, select the longest or shortest time domain duration corresponding to the HARQ-ACKs of multiple multicast transmissions. The HARQ-ACK is used as the first HARQ-ACK, or any one of the HARQ-ACKs of multiple multicast transmissions is selected as the first HARQ-ACK.

With the HARQ-ACK transmission method in the above embodiment, the time domain resources or the first symbol of the channel corresponding to the HARQ-ACKs of multiple multicast transmissions are the same, and the normal transmission of the HARQ-ACK can still be achieved.

In a possible implementation, the method further includes:

Step S24: Discard HARQ-ACKs except the first HARQ-ACK among the HARQ-ACKs of the multiple multicast transmissions.

or,

Step S25, the HARQ-ACKs except the first HARQ-ACK among the HARQ-ACKs of the multiple multicast transmissions are postponed to the next transmittable opportunity for transmission in descending order according to the priority of the PSSCH.

or,

Step S26, delaying the HARQ-ACKs except the first HARQ-ACK in the HARQ-ACKs of the multiple multicast transmissions in sequence from front to back to the next one according to the position of the first symbol of the time domain resource. Transmittable opportunity to transmit.

In a possible implementation, the method further includes:

Step S27 , when a collision occurs between the HARQ-ACKs of multiple multicast transmissions, multiplex the multiple HARQ-ACKs and the destination address corresponding to each HARQ-ACK to the physical uplink control channel PUCCH for transmission.

Through the HARQ-ACK transmission method in the above-mentioned embodiment, when a collision occurs between HARQ-ACKs of multiple multicast transmissions, normal transmission of all HARQ-ACKs can be realized.

In a possible implementation manner, the present disclosure also provides a HARQ-ACK transmission method for HARQ-ACK acknowledgment, the method is applied to user equipment UE, and the method of this embodiment is applied to HARQ for unicast transmission - Scenarios where there is a collision between the ACK and the HARQ-ACK of the multicast transmission. FIG. 6 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

As shown in Figure 6, the method may include:

Step S31, when a collision occurs between the HARQ-ACK of the unicast transmission and the HARQ-ACK of the multicast transmission, select the corresponding transmission priority from the HARQ-ACK of the unicast transmission and the HARQ-ACK of the multicast transmission The highest HARQ-ACK is transmitted.

In a possible implementation, the method may further include:

Step S32, discarding the corresponding transmission HARQ-ACK with low priority.

or

In step S33, the corresponding transmission HARQ-ACK with a low priority is postponed to the next transmittable opportunity for transmission.

In a possible implementation manner, the priority of transmission may be preset, for example, the priority of unicast may be preset to be greater than that of multicast, that is, the priority of unicast transmission is higher than that of multicast transmission. High priority. In this way, when a collision occurs between the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission on the side link of the UE, the HARQ-ACK of unicast transmission is directly transmitted, and the HARQ-ACK of multicast transmission is discarded , or, delay the transmission of the HARQ-ACK of the multicast transmission to the next transmittable opportunity.

In another possible implementation manner, the priority of unicast may also be preset to be lower than the priority of multicast, that is, the priority of unicast transmission is lower than that of multicast transmission. In this way, when a collision occurs between the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission on the side link of the UE, the HARQ-ACK of multicast transmission is directly transmitted, and the HARQ-ACK of unicast transmission is discarded , or, defer the transmission of the unicast HARQ-ACK to the next transmittable opportunity.

Through the HARQ-ACK transmission method of the above embodiment, when a collision occurs between the HARQ-ACK transmitted by unicast and the HARQ-ACK transmitted by multicast, it is not necessary to compare the priorities of the PSSCH corresponding to the HARQ-ACK. The normal transmission of HARQ-ACK is realized.

In another possible implementation, the method may further include:

Step S34, when a collision occurs between the HARQ-ACK of the unicast transmission and the HARQ-ACK of the multicast transmission, select the priority of the corresponding PSSCH from the HARQ-ACK of the unicast transmission and the HARQ-ACK of the multicast transmission The highest HARQ-ACK is transmitted;

Step S35, delaying the transmission of the HARQ-ACK with the lower priority of the corresponding PSSCH until the next transmittable opportunity.

Among them, the HARQ-ACK with the highest priority of the corresponding PSSCH is selected from the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission for transmission, and the priority level can still be determined through the PPPP of the PSSCH corresponding to the HARQ-ACK , the specific process will not be repeated.

In a possible implementation, the method may further include:

The HARQ-ACK with low priority of the corresponding PSSCH is discarded.

In a possible implementation manner, the present disclosure also provides a HARQ-ACK transmission method for HARQ-ACK acknowledgement, the method is applied to user equipment UE, and the method of this embodiment is applied to multiple unicast transmissions A collision occurs between the HARQ-ACK of the multicast transmission and the HARQ-ACK of the multicast transmission. FIG. 7 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure.

As shown in Figure 7, the method may include:

Step S41, when a collision occurs between the HARQ-ACKs of the multiple unicast transmissions and the HARQ-ACKs of the multicast transmission, select the first HARQ-ACK that meets the first preset condition from the HARQ-ACKs of the multiple unicast transmissions. a HARQ-ACK;

Step S42, select the HARQ-ACK with the highest priority of transmission or the highest priority of the PSSCH from the first HARQ-ACK and the HARQ-ACK of the multicast transmission for transmission.

The first preset condition is any one of the following: the PSSCH corresponding to the HARQ-ACK has the highest priority, and the first symbol of the time domain resource corresponding to the HARQ-ACK has the highest position.

The selection of the first HARQ-ACK that meets the first preset condition from the HARQ-ACKs of the plurality of unicast transmissions is referred to the description of step S11 in the foregoing, and details are not repeated here.

For step S42, reference may be made to the descriptions of steps S31 to S35 in the foregoing, and details are not repeated here.

Through the HARQ-ACK transmission method of the above embodiment, in a scenario where collisions occur between multiple unicast transmission HARQ-ACKs and multicast transmission HARQ-ACKs, normal transmission of HARQ-ACKs can be achieved.

In a possible implementation manner, the present disclosure also provides a HARQ-ACK transmission method for HARQ-ACK acknowledgment, the method is applied to user equipment UE, and the method of this embodiment is applied to HARQ for unicast transmission - Scenarios where collisions occur between ACKs and HARQ-ACKs for multiple multicast transmissions.

FIG. 8 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure. As shown in FIG. 8 , in a scenario where a collision occurs between HARQ-ACKs of unicast transmission and HARQ-ACKs of multiple multicast transmissions, the method may include:

Step S51, when a collision occurs between the HARQ-ACKs of the unicast transmission and the HARQ-ACKs of multiple multicast transmissions, select the first HARQ-ACK that meets the first preset condition from the HARQ-ACKs of the multiple multicast transmissions. a HARQ-ACK;

Step S52 , select the HARQ-ACK with the highest priority of transmission or the HARQ-ACK with the highest priority of PSSCH from the first HARQ-ACK and the HARQ-ACK of unicast transmission for transmission.

In a possible implementation manner, the first preset condition is any one of the following: the PSSCH corresponding to HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource corresponding to HARQ-ACK most forward.

Wherein, in step S51, the specific process of selecting the first HARQ-ACK that meets the first preset condition from the HARQ-ACKs of the multiple multicast transmissions may refer to the above HARQ-ACKs of multiple multicast transmissions The manner in the scene in which a collision occurs between them (steps S21-S27) will not be repeated.

For step S52, the specific process of selecting the corresponding transmission priority or the HARQ-ACK with the highest PSSCH priority from the first HARQ-ACK and the unicast HARQ-ACK for transmission can be referred to in the above step S31-step The description of part S35 will not be repeated.

Through the HARQ-ACK transmission method of the above-mentioned embodiment, in a scenario where a collision occurs between HARQ-ACK transmitted by unicast and HARQ-ACK transmitted by multiple multicasts, normal transmission of HARQ-ACK can be realized.

In a possible implementation manner, the present disclosure also provides a HARQ-ACK transmission method for HARQ-ACK acknowledgment, the method is applied to user equipment UE, and the method of this embodiment is applied to HARQ for unicast transmission - A collision between ACK and CSI feedback, or a collision between HARQ-ACK and CSI feedback for multicast transmission.

FIG. 9 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure. As shown in FIG. 9 , in a scenario where a collision occurs between HARQ-ACK of unicast transmission and CSI feedback, or in a scenario where a collision occurs between HARQ-ACK and CSI feedback of multicast transmission, the method Can include:

Step S61, when a collision occurs between the HARQ-ACK and the channel state information CSI feedback, select one of the HARQ-ACK or the CSI feedback for transmission according to the second preset condition;

The HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission.

Wherein, the second preset condition is any one of the following:

The relationship between the priority of the PSSCH corresponding to the HARQ-ACK and the priority threshold, the time domain resource corresponding to the HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to the CSI feedback or the position of the first symbol of the channel Position, predefined HARQ-ACK and CSI feedback priority relationship.

Through the HARQ-ACK transmission method of the above-mentioned embodiment, in a scenario where a collision occurs between HARQ-ACK and CSI feedback of unicast transmission or multicast transmission, normal transmission of HARQ-ACK can be realized.

In a possible implementation manner, the method may further include discarding untransmitted HARQ-ACK or CSI feedback. For example, if the HARQ-ACK is selected for transmission according to the second preset condition, the CSI feedback is discarded; if the CSI feedback is selected for transmission according to the second preset condition, the HARQ-ACK is discarded.

Wherein, according to different classification methods, the CSI feedback may be unicast transmission or multicast transmission CSI feedback, and the CSI feedback may be periodic, aperiodic, or semi-persistent. The present disclosure does not identify the type of CSI feedback be limited. In addition, the channel carrying CSI feedback may be PSSCH or PSCCH or PSFCH or PUCCH or PUSCH, and the present disclosure does not limit the type of channel carrying CSI feedback. The CSI feedback may include at least one of the following parameters: RI, PMI, CQI (Channel Quality Indicator, channel quality indicator), RSRP (Reference Signal Receiving Power, reference signal received power), RSRQ (Reference Signal Receiving Quality, reference signal received quality) , L1-SINR (Layer1-Signal to Interference plus NoiseRatio, Layer 1 Signal to Interference and Noise Ratio), L1-RSRQ (Layer1-Reference Signal Receiving Quality, Layer 1 Reference Signal Receiving Quality), L1-RSRP (Layer1-Reference Signal Receiving Power) , Layer 1 reference signal received power), LI (Layer indicator, layer indication), SRI (Sounding reference signal indicator, sounding reference signal indication), CRI (CSI-RS resource indicator, channel state information reference signal resource indication), SSBRI ( Synchronization Signal Block resource indicator, synchronization signal block resource indicator). The above parameters may be measurements based on the side link channel, or may be measurements based on the channel of the Uu link.

The collision may occur because the time-frequency resource or channel carrying HARQ-ACK overlaps or partially overlaps with the time-frequency resource or channel carrying CSI feedback, or may be the time-frequency resource or channel carrying HARQ-ACK It overlaps or partially overlaps with the time-frequency resources or channels carrying CSI feedback in time and frequency domains.

In an example, the method is described by taking the second preset condition as the relationship between the priority of the PSSCH corresponding to the HARQ-ACK and the priority threshold as an example. The priority threshold may be indicated by the base station through higher layer signaling (such as RRC signaling) or MAC-CE (MAC Control Element, MAC control element) or DCI (Downlink Control Information, downlink control information).

As shown in FIG. 9 , in step S61, selecting one of HARQ-ACK or CSI feedback for transmission according to the second preset condition may include:

Step S611, when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than the priority threshold, select the HARQ-ACK for transmission;

Step S612, when the priority of the PSSCH corresponding to the HARQ-ACK is lower than the priority threshold, select CSI feedback for transmission.

When HARQ-ACK is selected for transmission, CSI feedback may be discarded, and when CSI feedback is selected for transmission, HARQ-ACK may be discarded. For example, when a collision occurs between the HARQ-ACK of unicast transmission and the CSI feedback, when the priority of the PSSCH corresponding to the HARQ-ACK of unicast transmission is not lower than the priority threshold, the HARQ-ACK of unicast transmission is selected. ACK for transmission. When the priority of the PSSCH corresponding to the unicast HARQ-ACK is lower than the priority threshold, CSI feedback is selected for transmission. This example is also applicable to the scenario where a collision occurs between the HARQ-ACK of the multicast transmission and the CSI feedback.

In an example, the method is described by taking the second preset condition as a predefined priority relationship between HARQ-ACK and CSI feedback as an example.

As shown in FIG. 9 , in step S61, selecting one of HARQ-ACK or CSI feedback for transmission according to the second preset condition may include:

Step S613, if the priority of the predefined HARQ-ACK is higher than the priority of the CSI feedback, select the HARQ-ACK for transmission;

Step S614, if the priority of the predefined HARQ-ACK is lower than the priority of the CSI feedback, select the CSI feedback for transmission. When HARQ-ACK is selected for transmission, CSI feedback may be discarded, and when CSI feedback is selected for transmission, HARQ-ACK may be discarded.

For example, the priority of the predefined unicast transmission HARQ-ACK is higher than the priority of the CSI feedback. When a collision occurs between the HARQ-ACK of the unicast transmission and the CSI feedback, the HARQ-ACK of the unicast transmission is selected for transmission.

For another example, the priority of the predefined unicast transmission HARQ-ACK is lower than the priority of the CSI feedback. When a collision occurs between the HARQ-ACK of the unicast transmission and the CSI feedback, the CSI feedback of the unicast transmission is selected for transmission.

The above example is also applicable to the scenario in which a collision occurs between the HARQ-ACK of the multicast transmission and the CSI feedback.

In an example, the second preset condition is that the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to the CSI feedback or the position of the first symbol of the channel are taken as an example This method will be described.

As shown in FIG. 9 , in step S61, selecting one of HARQ-ACK or CSI feedback for transmission according to the second preset condition includes:

Step S615, select the corresponding time domain resource or the HARQ-ACK or CSI feedback with the first symbol of the channel at the front for transmission.

When HARQ-ACK is selected for transmission, CSI feedback may be discarded, and when CSI feedback is selected for transmission, HARQ-ACK may be discarded.

For example, when a collision occurs between the unicast HARQ-ACK and the CSI feedback, the UE can determine the time domain resource corresponding to each HARQ-ACK or the position of the first symbol of the channel and the time corresponding to the CSI feedback. Domain resource or the position of the first symbol of the channel, compare the relationship between the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to the CSI feedback or the position of the first symbol of the channel, If the time domain resource corresponding to the HARQ-ACK or the first symbol of the channel is located earlier, the HARQ-ACK is transmitted to the corresponding UE or base station, and the CSI feedback is discarded. If the time domain resource corresponding to the CSI feedback or the first symbol of the channel If the position of each symbol is at the front, the CSI is transmitted and fed back to the corresponding UE or base station, and the HARQ-ACK is discarded.

In a possible implementation manner, if the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel is the same as the time domain resource corresponding to the CSI feedback or the position of the first symbol of the channel, select the corresponding The HARQ-ACK or CSI feedback with the longest or shortest duration in the time domain is transmitted. For example, if the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel is the same as the time domain resource corresponding to CSI feedback or the position of the first symbol of the channel, the time domain corresponding to HARQ-ACK can be compared. The duration is the time domain duration corresponding to the CSI feedback, and the HARQ-ACK or CSI feedback with the longest or shortest corresponding time domain duration is selected for transmission.

With the HARQ-ACK transmission method in the above embodiment, when the HARQ-ACK and CSI feedback collide, the time domain resource corresponding to the HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to the CSI feedback or The position of the first symbol of the channel is the same, and normal transmission can still be achieved.

In a possible implementation manner, the present disclosure also provides a HARQ-ACK transmission method for HARQ-ACK acknowledgment, the method is applied to user equipment UE, and the method of this embodiment is applied to HARQ for unicast transmission - A collision occurs between ACK and SR (Scheduling Request, Scheduling Request), or a collision occurs between HARQ-ACK and SR of multicast transmission.

FIG. 10 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure. As shown in FIG. 10 , in a scenario where a collision occurs between a unicast HARQ-ACK and an SR, or in a scenario where a collision occurs between a multicast HARQ-ACK and an SR, the method may include: :

Step S71, when a collision occurs between the HARQ-ACK and the channel state information SR, select one of the HARQ-ACK or the SR for transmission according to the third preset condition;

Wherein, the HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission, and SR can be used to request resources for side link transmission, and can also be used to request resources for Uu link transmission. In addition, the channel carrying the SR may be PSSCH or PSCCH or PSFCH or PUCCH or PUSCH, and the present disclosure does not limit the type of the channel carrying the SR.

In a possible implementation manner, the method may further include discarding the untransmitted HARQ-ACK or SR. For example, if the HARQ-ACK is selected for transmission according to the second preset condition, the SR is discarded; if the SR is selected for transmission according to the second preset condition, the HARQ-ACK is discarded.

In a possible implementation manner, the third preset condition is any one of the following:

The relationship between the priority of the PSSCH corresponding to HARQ-ACK and the priority threshold, the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to SR or the position of the first symbol of the channel , Predefined priority relationship between HARQ-ACK and SR.

Through the HARQ-ACK transmission method of the above-mentioned embodiment, in a scenario where a collision occurs between HARQ-ACK and SR of unicast transmission or multicast transmission, normal transmission of HARQ-ACK can be realized. The collision may occur because the time-frequency resource or channel that bears HARQ-ACK overlaps or partially overlaps the time-frequency resource or channel that bears SR, or the time-frequency resource or channel that bears HARQ-ACK overlaps with the time-frequency resource or channel that bears SR. The time-frequency resources or channels carrying the SR overlap or partially overlap in the time and frequency domains.

The priority threshold may be indicated by the base station through higher layer signaling (such as RRC signaling) or MAC-CE (MAC Control Element, MAC control element) or DCI (Downlink Control Information, downlink control information).

In an example, the method is described by taking the third preset condition being the relationship between the priority of the PSSCH corresponding to the HARQ-ACK and the priority threshold as an example.

As shown in FIG. 10 , in step S71, selecting one of HARQ-ACK or SR for transmission according to the second preset condition may include:

Step S711, when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than the priority threshold, select the HARQ-ACK for transmission;

Step S712, when the priority of the PSSCH corresponding to the HARQ-ACK is lower than the priority threshold, select SR for transmission.

When the HARQ-ACK is selected for transmission, the SR may be discarded, and when the SR is selected for transmission, the HARQ-ACK may be discarded.

For example, when a collision occurs between the unicast HARQ-ACK and the SR, when the priority of the PSSCH corresponding to the unicast HARQ-ACK is not lower than the priority threshold, select the unicast HARQ-ACK to transmit. When the priority of the PSSCH corresponding to the unicast HARQ-ACK is lower than the priority threshold, SR is selected for transmission. This example is also applicable to the scenario in which a collision occurs between the HARQ-ACK of the multicast transmission and the SR.

In an example, the method is described by taking the third preset condition as: a predefined priority relationship between HARQ-ACK and SR as an example.

As shown in FIG. 10 , in step S71, selecting one of HARQ-ACK or SR for transmission according to the second preset condition, including:

Step S713, if the priority of the predefined HARQ-ACK is higher than the priority of the SR, select the HARQ-ACK for transmission;

Step S714, if the priority of the predefined HARQ-ACK is lower than the priority of the SR, the SR is selected for transmission.

When the HARQ-ACK is selected for transmission, the SR may be discarded, and when the SR is selected for transmission, the HARQ-ACK may be discarded. For example, the priority of the HARQ-ACK of the predefined unicast transmission is higher than the priority of the SR. When a collision occurs between the unicast HARQ-ACK and the SR, the unicast HARQ-ACK is selected for transmission.

For another example, the priority of the predefined unicast transmission HARQ-ACK is lower than the priority of the SR. When a collision occurs between the unicast HARQ-ACK and the SR, the SR is selected for transmission.

The above example is also applicable to the scenario in which a collision occurs between the HARQ-ACK of the multicast transmission and the SR.

In an example, the third preset condition is that the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to SR or the position of the first symbol of the channel are used as an example to compare The method is described.

As shown in FIG. 10 , in step S71, selecting one of HARQ-ACK or SR for transmission according to the second preset condition may include:

Step S715, select the corresponding time domain resource or the HARQ-ACK or SR with the first symbol of the channel at the front for transmission.

When the HARQ-ACK is selected for transmission, the SR may be discarded, and when the SR is selected for transmission, the HARQ-ACK may be discarded.

For example, when a collision occurs between the unicast HARQ-ACK and the SR, the UE can determine the time domain resource corresponding to each HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to the SR Or the position of the first symbol of the channel, compare the relationship between the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to SR or the position of the first symbol of the channel, if HARQ- The time domain resource corresponding to the ACK or the first symbol of the channel is located earlier, then the HARQ-ACK is transmitted to the corresponding UE or base station, and the SR is discarded. If the time domain resource corresponding to the SR or the first symbol of the channel is located near before, the SR is transmitted to the corresponding UE or the base station, and the HARQ-ACK is discarded.

In a possible implementation manner, if the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel is the same as the time domain resource corresponding to SR or the position of the first symbol of the channel, the corresponding time domain resource is selected. The HARQ-ACK or SR with the longest or shortest field duration is transmitted. For example, if the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel is the same as the time domain resource corresponding to SR or the position of the first symbol of the channel, the time domain duration corresponding to HARQ-ACK can be compared. The duration and the time domain duration corresponding to the SR, select the HARQ-ACK or SR with the longest or shortest corresponding time domain duration for transmission.

Through the HARQ-ACK transmission method in the above-mentioned embodiment, when the HARQ-ACK and SR collide, the position of the time domain resource corresponding to the HARQ-ACK or the first symbol of the channel and the time domain resource or channel corresponding to the SR The position of the first symbol is the same, and normal transmission can still be achieved.

In a possible implementation manner, the present disclosure also provides a HARQ-ACK transmission method for HARQ-ACK acknowledgement, the method is applied to user equipment UE, and the method of this embodiment is applied to multiple unicast transmissions A collision occurs between HARQ-ACKs of multiple multicast transmissions, or collisions occur between HARQ-ACKs of multiple multicast transmissions, or a collision occurs between HARQ-ACKs of unicast transmission and HARQ-ACKs of multicast transmission. The following will take a scenario in which a collision occurs between HARQ-ACKs of unicast transmission as an example for introduction. FIG. 11 shows a flowchart of a method for transmitting HARQ-ACK according to an embodiment of the present disclosure. As shown in Figure 11, the method may include:

In step S81, when a collision occurs between multiple HARQ-ACKs transmitted by unicast, multiple HARQ-ACKs are multiplexed on time-frequency resources or channels for transmission.

Wherein, multiplexing multiple HARQ-ACKs on time-frequency resources or channels for transmission may include:

Step S811, determine the sequence corresponding to each HARQ-ACK;

Step S812, select time-frequency resources or channels;

Step S813, for each HARQ-ACK, multiply the selected time-frequency resource or channel by the sequence corresponding to the HARQ-ACK in the time domain and/or frequency domain to obtain the first time-frequency resource or channel, and use the HARQ-ACK in the time domain and/or frequency domain to obtain the first time-frequency resource or channel. The first time-frequency resource or channel is used for transmission.

The sequence may be an OCC (orthogonal covering code, orthogonal covering sequence) sequence, or a CS (cyclic shift, cyclic shift) sequence. Multiplying the selected time-frequency resource or channel by the sequence corresponding to the HARQ-ACK in the time domain or frequency domain may be multiplying the selected time-frequency resource or channel by the OCC sequence corresponding to the HARQ-ACK in the time domain, or The selected time-frequency resource or channel is multiplied by the CS sequence corresponding to the HARQ-ACK in the frequency domain. According to the method of the above embodiment, the time-frequency resources or channels carrying HARQ-ACK that collide can be differentiated by multiplying and using different OCC sequences in the time domain, or the time-frequency resources or channels carrying HARQ-ACK that have collided can be divided into The frequency resources or channels are differentiated by multiplying different CS sequences in the frequency domain, or these collided time-frequency resources or channels carrying HARQ-ACK are multiplied by different OCC (orthogonal covering code, orthogonal cover sequence) sequences are simultaneously multiplied by different CS (cyclic shift, cyclic shift) sequences in the frequency domain to make distinctions.

When collisions occur between HARQ-ACKs of unicast transmission, these HARQ-ACKs of unicast transmission may be multiplexed on a specific time-frequency resource or channel. The specific time-frequency resource or channel may be PSSCH or PSCCH or PSFCH or PUCCH or PUSCH, which may be configured by the base station through high-level signaling or determined through a predefined rule.

Wherein, the predefined rule for selecting the time-frequency resource or channel that bears the collided HARQ-ACK may be one of the following:

1. Select the time-frequency resource or channel with the highest first symbol in the collision-bearing time-frequency resource or channel carrying HARQ-ACK;

2. Select the time-frequency resource or channel that occupies the largest number of symbols in the time domain among the time-frequency resources or channels carrying the HARQ-ACK that have collided.

3. Select any time-frequency resource or channel among the time-frequency resources or channels that collide with the HARQ-ACK bearing;

4. Select the time-frequency resource or channel with the last symbol of the first symbol in the collision-bearing time-frequency resource or channel of HARQ-ACK;

5. Select the time-frequency resource or channel with the highest priority of the corresponding PSCCH among the time-frequency resources or channels carrying the HARQ-ACK in collision;

5. Select the time-frequency resource or channel with the lowest priority of the corresponding PSCCH among the time-frequency resources or channels carrying the HARQ-ACK in collision.

The above-mentioned embodiments are also applicable to the situation that the HARQ-ACK of unicast transmission collides with the HARQ-ACK of multicast transmission, or the situation that the HARQ-ACK of multicast transmission collides with the HARQ-ACK of multicast transmission. No longer.

Through the HARQ-ACK transmission method of the above-mentioned embodiment, when a collision occurs between multiple HARQ-ACKs, normal transmission of all HARQ-ACKs can be realized.

In a possible implementation manner, the method may further include: the UE reports at least one of the following information to the base station, the maximum number of unicast transmissions that the UE can support simultaneously on the side link, the The maximum number of simultaneous multicast transmissions supported, the maximum number of unicast and multicast transmissions that can be simultaneously supported on the side link, the maximum number of HARQ processes that can be supported on the side link for all unicast transmissions , the maximum number of HARQ processes that can be supported on the side link for all multicast transmissions, the maximum number of HARQ processes that can be supported on the side link for the sum of all unicast transmissions and all multicast transmissions, and the The maximum number of HARQ processes that can be supported on the unicast transmission and the HARQ processes that the UE can support on the Uu link. The maximum number of HARQ processes supported, whether the UE has the ability to become a group header in multicast transmission in sidelink transmission, and whether the UE has the ability to become a group head in sidelink transmission.

In a possible implementation manner, the UE may report to the base station through high-layer signaling.

In this way, the base station can perform corresponding configuration after receiving the above-mentioned content reported by the UE. For example, when the base station receives the maximum number of unicast transmissions that the UE can simultaneously support on the side link reported by the UE to the base station, the base station can configure the number of unicast transmissions on the side link by the UE to be the maximum number. According to the same principle, the base station can configure the number of multicast transmissions on the side link, the sum of the number of unicast transmissions and multicast transmissions on the side link, and the number of unicast transmissions on the side link. The number of HARQ processes, the number of HARQ processes for multicast transmission on the side link, the number of HARQ processes for unicast transmission and multicast transmission on the side link, the number of HARQ processes for unicast transmission on the side link The sum of the number of HARQ processes on the Uu link with the UE, the sum of the HARQ processes on the side link and the sum of the HARQ processes on the Uu link by the UE.

In a possible implementation manner, the method may further include: the UE may report to the base station through higher layer signaling the maximum number of unicast transmissions that the UE can support on the side link, the number of groups that the UE can support on the side link maximum number of unicast and multicast transmissions that can be supported on the side link, maximum number of HARQ processes that can be supported on the side link for unicast transmission, on the side link The maximum number of HARQ processes for multicast transmission that can be supported, and the maximum number of HARQ processes for unicast transmission and multicast transmission that can be supported on the side link. Therefore, the base station can also configure the number of unicast transmissions on the side link, the number of multicast transmissions on the side link, and the sum of unicast transmissions and multicast transmissions on the side link for the UE through high-level signaling. , the number of HARQ processes for unicast transmission on the side link, the number of HARQ processes for multicast transmission on the side link, and the sum of the number of HARQ processes for unicast transmission and multicast transmission on the side link.

In a possible implementation manner, the method may further include: the base station activates or deactivates the HARQ-ACK function of multicast transmission through high-layer signaling or MAC-CE or DCI; CE or DCI activates or deactivates the HARQ-ACK function of unicast transmission, and the base station activates or deactivates the function of broadcast transmission HARQ-ACK through higher layer signaling or MAC-CE or DCI. In a possible implementation manner, the method may further include: the base station indicates through high layer signaling or MAC-CE or DCI whether the multicast adopts the feedback mode with only NACK or the feedback mode with both ACK and NACK. For example, the base station can use 1-bit RRC (Radio Resource Control, Radio Resource Control) signaling to indicate whether the multicast adopts the feedback mode of only NACK or the feedback mode of both ACK and NACK. For example, 0 can indicate that only NACK is used. Feedback mode, 1 can indicate that the feedback mode with ACK and NACK is adopted at the same time.

In a possible implementation manner, the method may further include: the base station indicates whether the current transmission is unicast or multicast through high-layer signaling or MAC-CE or DCI, and the base station uses high-layer signaling or MAC-CE or DCI to indicate whether the current transmission is unicast or multicast. to indicate whether the current transmission is unicast or broadcast, the base station indicates through high layer signaling or MAC-CE or DCI whether the current transmission is multicast or broadcast, the base station indicates through high layer signaling or MAC-CE or DCI whether the current transmission is Unicast, Multicast or Broadcast. The current transmission may refer to PSSCH transmission or PSCCH transmission.

FIG. 12 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure. The apparatus may be applied to user equipment UE, and the apparatus may include:

The first selection module 91 is configured to select a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the plurality of unicast transmissions when a collision occurs between the HARQ-ACKs of the plurality of unicast transmissions. ACK;

The first transmission module 92 is configured to transmit the first HARQ-ACK.

In a possible implementation manner, the first preset condition is any one of the following: the physical side link shared channel PSSCH corresponding to HARQ-ACK has the highest priority, the time domain resource corresponding to HARQ-ACK, or The first symbol of the channel is positioned first.

According to the apparatus of the above-mentioned embodiment of the present disclosure, by setting the first preset condition, when a collision occurs between HARQ-ACKs of multiple unicast transmissions, the HARQ-ACK that meets the first preset condition is selected for transmission, thereby realizing When the HARQ-ACKs of multiple unicast transmissions collide, the HARQ-ACKs can still be transmitted normally.

FIG. 13 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

In a possible implementation manner, as shown in FIG. 13 , the apparatus may further include:

The second selection module 93 is configured to select the corresponding time-domain duration in the HARQ-ACKs of multiple unicast transmissions if the positions of the first symbols of the time-domain resources corresponding to the HARQ-ACKs of multiple unicast transmissions are the same The longest or shortest HARQ-ACK is used as the first HARQ-ACK, or any one HARQ-ACK among multiple unicast transmission HARQ-ACKs is selected as the first HARQ-ACK.

A first discarding module 94, configured to discard HARQ-ACKs other than the first HARQ-ACK among the HARQ-ACKs of the multiple unicast transmissions.

The first deferral module 95 is configured to defer the HARQ-ACKs except the first HARQ-ACK in the HARQ-ACKs of the plurality of unicast transmissions in order from high to low according to the priority of the PSSCH to the next available HARQ-ACK. Transmission opportunity to transmit.

A second deferral module 96, configured to convert the HARQ-ACKs except the first HARQ-ACK in the HARQ-ACKs of the plurality of unicast transmissions according to the position of the first symbol of the time domain resource from front to back In turn defer transmission until the next transmittable opportunity.

In a possible implementation, the apparatus further includes:

The first multiplexing and transmission module 97 is configured to multiplex the multiple HARQ-ACKs and the destination address corresponding to each HARQ-ACK to the physical uplink when a collision occurs between the HARQ-ACKs of multiple unicast transmissions The control channel PUCCH is transmitted.

In a possible implementation, the apparatus further includes:

The reporting module 98 is used for the UE to report at least one of the following information to the base station: the maximum number of unicast transmissions that the UE can simultaneously support on the side link, the maximum number of multicast transmissions that can be simultaneously supported on the side link, The maximum number of simultaneous unicast and multicast transmissions that can be supported on the sidelink, the maximum number of HARQ processes that can be supported on the sidelink for all unicast transmissions, the maximum number of HARQ processes that can be supported on the sidelink Maximum number of HARQ processes for multicast transmission, Maximum number of HARQ processes for all unicast transmissions that can be supported on the side link and HARQ processes for all multicast transmissions, HARQ processes for unicast transmission that can be supported on the side link The sum of the maximum number of HARQ processes that the UE can support on the Uu link, the sum of the HARQ processes that can be supported on the side link for multicast transmission and the sum of the HARQ processes that the UE can support on the Uu link.

FIG. 14 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure. The apparatus may be applied to user equipment UE, and the apparatus may include:

The third selection module 101 is configured to select a first HARQ-ACK that meets a first preset condition from the HARQ-ACKs of the multiple multicast transmissions when a collision occurs between the HARQ-ACKs of the multiple multicast transmissions ACK;

The second transmission module 102 is configured to transmit the first HARQ-ACK.

In a possible implementation manner, the first preset condition is any one of the following: the physical side link shared channel PSSCH corresponding to HARQ-ACK has the highest priority, and the time domain resource corresponding to HARQ-ACK has the highest priority. The first symbol is positioned first.

According to the device of the above-mentioned embodiment of the present disclosure, by setting the first preset condition, when a collision occurs between HARQ-ACKs of multiple multicast transmissions, the HARQ-ACK that meets the first preset condition is selected for transmission, thereby realizing When the HARQ-ACKs of multiple multicast transmissions collide, the HARQ-ACKs can still be transmitted normally.

FIG. 15 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure.

In a possible implementation manner, as shown in FIG. 15 , the apparatus may further include:

The fourth selection module 103 is configured to select the corresponding time domain duration in the HARQ-ACKs of the multiple multicast transmissions if the positions of the first symbols of the time domain resources corresponding to the HARQ-ACKs of the multiple multicast transmissions are the same The longest or shortest HARQ-ACK is used as the first HARQ-ACK, or any one HARQ-ACK among the HARQ-ACKs of multiple multicast transmissions is selected as the first HARQ-ACK.

A second discarding module 104, configured to discard HARQ-ACKs other than the first HARQ-ACK among the HARQ-ACKs of the multiple multicast transmissions.

The third deferral module 106 is configured to defer the HARQ-ACKs except the first HARQ-ACK among the HARQ-ACKs of the plurality of multicast transmissions in order from high to low according to the priority of the PSSCH to the next available HARQ-ACK. Transmission opportunity to transmit.

The fourth delaying module 106 is configured to convert the HARQ-ACKs except the first HARQ-ACK in the HARQ-ACKs of the plurality of multicast transmissions according to the position of the first symbol of the time domain resource from front to back In turn defer transmission until the next transmittable opportunity.

The second multiplexing transmission module 107 is configured to multiplex the multiple HARQ-ACKs and the destination address corresponding to each HARQ-ACK to the physical uplink when a collision occurs between the HARQ-ACKs of multiple multicast transmissions The control channel PUCCH is transmitted.

In a possible implementation, the apparatus further includes:

The reporting module 98 is used for the UE to report at least one of the following information to the base station: the maximum number of unicast transmissions that the UE can simultaneously support on the side link, the maximum number of multicast transmissions that can be simultaneously supported on the side link, The maximum number of simultaneous unicast and multicast transmissions that can be supported on the sidelink, the maximum number of HARQ processes that can be supported on the sidelink for all unicast transmissions, the maximum number of HARQ processes that can be supported on the sidelink Maximum number of HARQ processes for multicast transmission, Maximum number of HARQ processes for all unicast transmissions that can be supported on the side link and HARQ processes for all multicast transmissions, HARQ processes for unicast transmission that can be supported on the side link The sum of the maximum number of HARQ processes that the UE can support on the Uu link, the sum of the HARQ processes that can be supported on the side link for multicast transmission and the sum of the HARQ processes that the UE can support on the Uu link.

FIG. 16 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure. The apparatus may be applied to user equipment UE, and the apparatus may include:

The fifth selection module 111 is used to select the corresponding HARQ-ACK from the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission when a collision occurs between the HARQ-ACK of unicast transmission and the HARQ-ACK of multicast transmission. The HARQ-ACK with the highest priority of the transmission is transmitted.

In a possible implementation manner, the priority of unicast transmission is higher than that of multicast transmission.

Through the HARQ-ACK transmission device of the above-mentioned embodiment, when a collision occurs between the HARQ-ACK transmitted by unicast and the HARQ-ACK transmitted by multicast, it is not necessary to compare the priorities of the PSSCH corresponding to the HARQ-ACK. The normal transmission of HARQ-ACK is realized.

In a possible implementation, the apparatus may further include one or more of the following modules:

The third discarding module 112 is configured to discard the correspondingly transmitted HARQ-ACK with low priority,

The fifth deferral module 113 is configured to defer the corresponding transmitted HARQ-ACK with a low priority to the next transmittable opportunity for transmission.

In a possible implementation manner, the apparatus may further include:

The sixth selection module 114 is configured to select a corresponding HARQ-ACK from the HARQ-ACK of the unicast transmission and the HARQ-ACK of the multicast transmission when a collision occurs between the HARQ-ACK of the unicast transmission and the HARQ-ACK of the multicast transmission The HARQ-ACK with the highest priority of the PSSCH is transmitted;

The sixth deferral module 115 is configured to defer the corresponding PSSCH HARQ-ACK with a low priority to the next transmittable opportunity for transmission.

In a possible implementation, the apparatus further includes:

The reporting module 98 (not shown) is used for the UE to report at least one of the following information to the base station: the maximum number of unicast transmissions that the UE can simultaneously support on the side link, the multicast that can be simultaneously supported on the side link Maximum number of transmissions, Maximum number of simultaneous unicast and multicast transmissions that can be supported on the side link, Maximum number of HARQ processes that can be supported on the side link for all unicast transmissions, On the side link The maximum number of HARQ processes that can be supported on the side link for all multicast transmissions, the maximum number of HARQ processes that can be The maximum number of HARQ processes for multicast transmission combined with the HARQ processes that the UE can support on the Uu link, and the sum of the HARQ processes for multicast transmission that can be supported on the side link and the HARQ processes that the UE can support on the Uu link. the maximum number of sums.

FIG. 17 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure. The apparatus may be applied to user equipment UE, and the apparatus may include:

The seventh selection module 121 is configured to select, from the HARQ-ACKs of the plurality of unicast transmissions, when a collision occurs between the HARQ-ACKs of the plurality of unicast transmissions and the HARQ-ACKs of the multicast transmission the first HARQ-ACK of the preset condition;

The eighth selection module 122 is configured to select, from the first HARQ-ACK and the HARQ-ACK of the multicast transmission, the corresponding transmission priority or the HARQ-ACK with the highest PSSCH priority for transmission.

In a possible implementation manner, the first preset condition is any one of the following: the PSSCH corresponding to HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource corresponding to HARQ-ACK most forward.

With the device for transmitting HARQ-ACK in the above embodiment, in a scenario where collisions occur between multiple HARQ-ACKs transmitted by unicast and HARQ-ACKs transmitted by multicast, normal transmission of HARQ-ACK can be realized.

In a possible implementation, the apparatus further includes:

A reporting module, used for the UE to report at least one of the following information to the base station: the maximum number of unicast transmissions that the UE can support simultaneously on the side link, the maximum number of multicast transmissions that can be simultaneously supported on the side link, the The maximum number of simultaneous unicast and multicast transmissions that can be supported on the side link, the maximum number of HARQ processes that can be supported on the side link for all unicast transmissions, and the total number of groups that can be supported on the side link Maximum number of HARQ processes for unicast transmission, maximum number of HARQ processes for all unicast transmissions and all multicast transmissions that can be supported on the side link, and HARQ processes for unicast transmission that can be supported on the side link. The sum of the maximum number of HARQ processes that the UE can support on the Uu link, the sum of the HARQ processes that can be supported on the side link for multicast transmission and the sum of the HARQ processes that the UE can support on the Uu link.

FIG. 18 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure. The apparatus may be applied to user equipment UE, and the apparatus may include:

The ninth selection module 131 is configured to, when a collision occurs between the HARQ-ACKs of unicast transmission and the HARQ-ACKs of multiple multicast transmissions, select from the HARQ-ACKs of the multiple multicast transmissions that conform to the first the first HARQ-ACK of the preset condition;

The tenth selection module 132 is configured to select, from the first HARQ-ACK and the HARQ-ACK of unicast transmission, the HARQ-ACK with the corresponding transmission priority or the HARQ-ACK with the highest PSSCH priority for transmission.

In a possible implementation manner, the first preset condition is any one of the following: the PSSCH corresponding to HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource corresponding to HARQ-ACK most forward.

With the device for transmitting HARQ-ACK in the above embodiment, in a scenario where a collision occurs between HARQ-ACK transmitted by unicast and HARQ-ACK transmitted by multiple multicasts, normal transmission of HARQ-ACK can be realized.

In a possible implementation, the apparatus further includes:

A reporting module, used for the UE to report at least one of the following information to the base station: the maximum number of unicast transmissions that the UE can support simultaneously on the side link, the maximum number of multicast transmissions that can be simultaneously supported on the side link, the The maximum number of simultaneous unicast and multicast transmissions that can be supported on the side link, the maximum number of HARQ processes that can be supported on the side link for all unicast transmissions, and the total number of groups that can be supported on the side link Maximum number of HARQ processes for unicast transmission, maximum number of HARQ processes for all unicast transmissions and all multicast transmissions that can be supported on the side link, and HARQ processes for unicast transmission that can be supported on the side link. The sum of the maximum number of HARQ processes that the UE can support on the Uu link, the sum of the HARQ processes that can be supported on the side link for multicast transmission and the sum of the HARQ processes that the UE can support on the Uu link.

FIG. 19 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure. The apparatus may be applied to user equipment UE, and the apparatus may include:

The eleventh selection module 141 is configured to select one of the HARQ-ACK or the CSI feedback for transmission according to the second preset condition when a collision occurs between the HARQ-ACK and the channel state information CSI feedback;

The HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission.

In a possible implementation manner, the second preset condition is any one of the following:

The relationship between the priority of the PSSCH corresponding to the HARQ-ACK and the priority threshold, the time domain resource corresponding to the HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to the CSI feedback or the position of the first symbol of the channel Position, predefined HARQ-ACK and CSI feedback priority relationship.

With the HARQ-ACK transmission apparatus in the above-mentioned embodiment, in a scenario where a collision occurs between HARQ-ACK and CSI feedback of unicast transmission or multicast transmission, normal transmission of HARQ-ACK can be realized.

In a possible implementation manner, the second preset condition is the relationship between the priority of the PSSCH corresponding to the HARQ-ACK and the priority threshold,

The eleventh selection module 141 includes:

The first selection unit 1411 is configured to select the HARQ-ACK for transmission when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than the priority threshold;

The second selection unit 1412 is configured to select CSI feedback for transmission when the priority of the PSSCH corresponding to the HARQ-ACK is lower than the priority threshold.

In a possible implementation manner, the second preset condition is: the position of the time domain resource corresponding to the HARQ-ACK or the first symbol of the channel and the time domain resource corresponding to the CSI feedback or the first symbol of the channel s position,

The eleventh selection module 141 includes:

The third selecting unit 1413 is configured to select the corresponding time domain resource or the HARQ-ACK or CSI feedback with the first symbol of the channel for transmission.

In a possible implementation manner, the second preset condition is: a predefined priority relationship between HARQ-ACK and CSI feedback,

The eleventh selection module 141 includes:

a fourth selection unit 1414, configured to select the HARQ-ACK for transmission if the priority of the predefined HARQ-ACK is higher than the priority of the CSI feedback;

The fifth selection unit 1415 is configured to select the CSI feedback for transmission if the priority of the predefined HARQ-ACK is lower than the priority of the CSI feedback.

In a possible implementation, the apparatus further includes:

A reporting module, used for the UE to report at least one of the following information to the base station: the maximum number of unicast transmissions that the UE can support simultaneously on the side link, the maximum number of multicast transmissions that can be simultaneously supported on the side link, the The maximum number of simultaneous unicast and multicast transmissions that can be supported on the side link, the maximum number of HARQ processes that can be supported on the side link for all unicast transmissions, and the total number of groups that can be supported on the side link Maximum number of HARQ processes for unicast transmission, maximum number of HARQ processes for all unicast transmissions and all multicast transmissions that can be supported on the side link, and HARQ processes for unicast transmission that can be supported on the side link. The sum of the maximum number of HARQ processes that the UE can support on the Uu link, the sum of the HARQ processes that can be supported on the side link for multicast transmission and the sum of the HARQ processes that the UE can support on the Uu link.

FIG. 20 shows a block diagram of an apparatus for transmitting HARQ-ACK according to an embodiment of the present disclosure. The apparatus may be applied to user equipment UE, and the apparatus may include:

The twelfth selection module 151 is configured to select one of the HARQ-ACK or the SR for transmission according to the third preset condition when a collision occurs between the HARQ-ACK and the channel state information SR;

The HARQ-ACK is HARQ-ACK of unicast transmission or HARQ-ACK of multicast transmission.

In a possible implementation manner, the third preset condition is any one of the following:

The relationship between the priority of the PSSCH corresponding to HARQ-ACK and the priority threshold, the time domain resource corresponding to HARQ-ACK or the position of the first symbol of the channel and the time domain resource corresponding to SR or the position of the first symbol of the channel , Predefined priority relationship between HARQ-ACK and SR.

With the device for transmitting HARQ-ACK in the above embodiment, in a scenario where a collision occurs between HARQ-ACK and SR of unicast transmission or multicast transmission, normal transmission of HARQ-ACK can be realized.

In a possible implementation manner, the third preset condition is the relationship between the priority of the PSSCH corresponding to the HARQ-ACK and the priority threshold,

The twelfth selection module 151 includes:

The sixth selection unit 1511 is configured to select HARQ-ACK for transmission when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than the priority threshold;

The seventh selection unit 1512 is configured to select the SR for transmission when the priority of the PSSCH corresponding to the HARQ-ACK is lower than the priority threshold.

In a possible implementation manner, the third preset condition is: the time domain resource corresponding to the HARQ-ACK or the position of the first symbol of the channel is the same as the time domain resource corresponding to the SR or the first symbol of the channel. Location,

The twelfth selection module 151 includes:

The eighth selection unit 1513 is configured to select the corresponding time domain resource or the HARQ-ACK or SR with the first symbol of the channel at the front for transmission.

In a possible implementation manner, the third preset condition is: a predefined priority relationship between HARQ-ACK and SR,

The twelfth selection module 151 includes:

Ninth selection unit 1514, configured to select the HARQ-ACK for transmission if the priority of the predefined HARQ-ACK is higher than the priority of the SR;

The tenth selection unit 1515 is configured to select the SR for transmission if the priority of the predefined HARQ-ACK is lower than the priority of the SR.

In a possible implementation, the apparatus further includes:

A reporting module, used for the UE to report at least one of the following information to the base station: the maximum number of unicast transmissions that the UE can support simultaneously on the side link, the maximum number of multicast transmissions that can be simultaneously supported on the side link, the The maximum number of simultaneous unicast and multicast transmissions that can be supported on the side link, the maximum number of HARQ processes that can be supported on the side link for all unicast transmissions, and the total number of groups that can be supported on the side link Maximum number of HARQ processes for unicast transmission, maximum number of HARQ processes for all unicast transmissions and all multicast transmissions that can be supported on the side link, and HARQ processes for unicast transmission that can be supported on the side link. The sum of the maximum number of HARQ processes that the UE can support on the Uu link, the sum of the HARQ processes that can be supported on the side link for multicast transmission and the sum of the HARQ processes that the UE can support on the Uu link.

FIG. 21 is a block diagram of an apparatus 800 for HARQ-ACK transmission according to an exemplary embodiment. For example, apparatus 800 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.

21, the apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and communication component 816.

The processing component 802 generally controls the overall operation of the device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 can include one or more processors 820 to execute instructions to perform all or some of the steps of the methods described above. Additionally, processing component 802 may include one or more modules that facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

Memory 804 is configured to store various types of data to support operations at device 800 . Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and the like. Memory 804 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

Power supply assembly 806 provides power to the various components of device 800 . Power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to device 800 .

Multimedia component 808 includes a screen that provides an output interface between the device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect the duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 808 includes a front-facing camera and/or a rear-facing camera. When the apparatus 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.

Audio component 810 is configured to output and/or input audio signals. For example, audio component 810 includes a microphone (MIC) that is configured to receive external audio signals when device 800 is in operating modes, such as call mode, recording mode, and voice recognition mode. The received audio signal may be further stored in memory 804 or transmitted via communication component 816 . In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.

Sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of device 800 . For example, the sensor assembly 814 can detect the open/closed state of the device 800, the relative positioning of components, such as the display and keypad of the device 800, and the sensor assembly 814 can also detect a change in the position of the device 800 or a component of the device 800 , the presence or absence of user contact with the device 800 , the orientation or acceleration/deceleration of the device 800 and the temperature change of the device 800 . Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 816 is configured to facilitate wired or wireless communication between apparatus 800 and other devices. Device 800 may access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.

In an exemplary embodiment, a non-volatile computer-readable storage medium, such as a memory 804 comprising computer program instructions executable by the processor 820 of the apparatus 800 to perform the above-described method is also provided.

The present disclosure may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for causing a processor to implement various aspects of the present disclosure.

A computer-readable storage medium may be a tangible device that can hold and store instructions for use by the instruction execution device. The computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (non-exhaustive list) of computer readable storage media include: portable computer disks, hard disks, random access memory (RAM), read only memory (ROM), erasable programmable read only memory (EPROM) or flash memory), static random access memory (SRAM), portable compact disk read only memory (CD-ROM), digital versatile disk (DVD), memory sticks, floppy disks, mechanically coded devices, such as printers with instructions stored thereon Hole cards or raised structures in grooves, and any suitable combination of the above. Computer-readable storage media, as used herein, are not to be construed as transient signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (eg, light pulses through fiber optic cables), or through electrical wires transmitted electrical signals.

The computer readable program instructions described herein may be downloaded to various computing/processing devices from a computer readable storage medium, or to an external computer or external storage device over a network such as the Internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and/or edge servers. A network adapter card or network interface in each computing/processing device receives computer-readable program instructions from a network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in each computing/processing device .

Computer program instructions for carrying out operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or instructions in one or more programming languages. Source or object code, written in any combination, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as the "C" language or similar programming languages. The computer readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server implement. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (eg, using an Internet service provider through the Internet connect). In some embodiments, custom electronic circuits, such as programmable logic circuits, field programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), can be personalized by utilizing state information of computer readable program instructions. Computer readable program instructions are executed to implement various aspects of the present disclosure.

Aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions.

These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer or other programmable data processing apparatus to produce a machine that causes the instructions when executed by the processor of the computer or other programmable data processing apparatus , resulting in means for implementing the functions/acts specified in one or more blocks of the flowchart and/or block diagrams. These computer readable program instructions can also be stored in a computer readable storage medium, these instructions cause a computer, programmable data processing apparatus and/or other equipment to operate in a specific manner, so that the computer readable medium on which the instructions are stored includes An article of manufacture comprising instructions for implementing various aspects of the functions/acts specified in one or more blocks of the flowchart and/or block diagrams.

Computer readable program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other equipment to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other equipment to produce a computer-implemented process , thereby causing instructions executing on a computer, other programmable data processing apparatus, or other device to implement the functions/acts specified in one or more blocks of the flowcharts and/or block diagrams.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more functions for implementing the specified logical function(s) executable instructions. In some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It is also noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in dedicated hardware-based systems that perform the specified functions or actions , or can be implemented in a combination of dedicated hardware and computer instructions.

Various embodiments of the present disclosure have been described above, and the foregoing descriptions are exemplary, not exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen to best explain the principles of the embodiments, the practical application or technical improvement over the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (62)

1. A transmission method of hybrid automatic repeat request acknowledgement (HARQ-ACK), which is applied to User Equipment (UE) applied to a side link of a new air interface Internet of vehicles (NR V2X), and comprises the following steps:

when collision occurs among the HARQ-ACKs of a plurality of unicast transmissions, selecting a first HARQ-ACK which meets a first preset condition from the HARQ-ACKs of the plurality of unicast transmissions;

transmitting the first HARQ-ACK; the first preset condition is any one of the following conditions: the physical side link shared channel PSSCH corresponding to the HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource or channel corresponding to the HARQ-ACK is the most front;

the method further comprises the following steps: when collision occurs among the HARQ-ACK of the plurality of unicast transmissions, multiplexing the plurality of HARQ-ACK and the destination address corresponding to each HARQ-ACK to a physical uplink control channel PUCCH for transmission.

2. The method of claim 1, further comprising:

discarding HARQ-ACKs of the plurality of unicast transmissions other than the first HARQ-ACK.

3. The method of claim 1, further comprising:

and sequentially postponing HARQ-ACK except the first HARQ-ACK in the plurality of unicast transmission HARQ-ACK to the next transmission opportunity according to the priority of PSSCH from high to low.

4. The method of claim 1, further comprising:

and sequentially postponing HARQ-ACKs except the first HARQ-ACK in the plurality of unicast transmitted HARQ-ACKs to the next transmission opportunity from front to back according to the position of the first symbol of the time domain resource for transmission.

5. The method of claim 1, further comprising:

and if the position of the first symbol of the time domain resource corresponding to the HARQ-ACK of the unicast transmission is the same, selecting the HARQ-ACK with the longest or shortest time domain duration corresponding to the HARQ-ACK of the unicast transmission as the first HARQ-ACK, or selecting any one HARQ-ACK of the unicast transmission as the first HARQ-ACK.

6. The method of claim 1, further comprising:

the UE reports to the base station at least one of the following information: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

7. A transmission method of hybrid automatic repeat request acknowledgement (HARQ-ACK), which is applied to User Equipment (UE) applied to a side link of a new air interface Internet of vehicles (NR V2X), and comprises the following steps:

when collision occurs among the HARQ-ACKs of a plurality of multicast transmissions, selecting a first HARQ-ACK which meets a first preset condition from the HARQ-ACKs of the plurality of multicast transmissions;

transmitting the first HARQ-ACK; the first preset condition is any one of the following conditions: the priority of a physical side link shared channel PSSCH corresponding to the HARQ-ACK is the highest, and the position of a first symbol of a time domain resource corresponding to the HARQ-ACK is the most front;

the method further comprises the following steps:

when the HARQ-ACK of a plurality of multicast transmissions collide, the plurality of HARQ-ACK and the destination address corresponding to each HARQ-ACK are multiplexed to a physical uplink control channel PUCCH for transmission.

8. The method of claim 7, further comprising:

discarding HARQ-ACKs of the plurality of multicast transmissions other than the first HARQ-ACK.

9. The method of claim 7, further comprising:

and sequentially postponing HARQ-ACK except the first HARQ-ACK in the plurality of multicast transmission to the next transmission opportunity according to the priority of PSSCH from high to low.

10. The method of claim 7, further comprising:

and delaying HARQ-ACK except the first HARQ-ACK in the plurality of multicast transmission HARQ-ACK to the next transmission opportunity in sequence from front to back according to the position of the first symbol of the time domain resource.

11. The method of claim 7, further comprising:

and if the position of the first symbol of the time domain resource corresponding to the HARQ-ACK of the multicast transmission is the same, selecting the HARQ-ACK with the longest or shortest time domain duration corresponding to the HARQ-ACK of the multicast transmission as the first HARQ-ACK, or selecting any one HARQ-ACK of the multicast transmission as the first HARQ-ACK.

12. The method of claim 7, further comprising:

the UE reports to the base station at least one of the following information: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

13. A transmission method of hybrid automatic repeat request acknowledgement (HARQ-ACK), which is applied to User Equipment (UE) applied to a side link of a new air interface Internet of vehicles (NR V2X), and comprises the following steps:

when collision occurs between the unicast-transmitted HARQ-ACK and the multicast-transmitted HARQ-ACK, selecting the HARQ-ACK with the highest priority of corresponding transmission from the unicast-transmitted HARQ-ACK and the multicast-transmitted HARQ-ACK for transmission;

the method further comprises the following steps:

when collision occurs between the unicast-transmitted HARQ-ACK and the multicast-transmitted HARQ-ACK, selecting the HARQ-ACK with the highest priority of the corresponding PSSCH from the unicast-transmitted HARQ-ACK and the multicast-transmitted HARQ-ACK for transmission;

the low priority HARQ-ACK for the corresponding PSSCH is deferred until the next transmission opportunity for transmission.

14. The method of claim 13, wherein unicast transmissions have a higher priority than multicast transmissions.

15. The method according to claim 13 or 14, characterized in that the method further comprises:

the HARQ-ACKs of the corresponding transmission with low priority are discarded,

or,

the HARQ-ACK with the low priority for the corresponding transmission is deferred to the next transmission opportunity for transmission.

16. The method of claim 13, further comprising:

the UE reports to the base station at least one of the following information: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

17. A transmission method of hybrid automatic repeat request acknowledgement (HARQ-ACK), which is applied to User Equipment (UE) applied to a side link of a new air interface Internet of vehicles (NR V2X), and comprises the following steps:

when collision occurs between the HARQ-ACK of a plurality of unicast transmissions and the HARQ-ACK of a multicast transmission, selecting a first HARQ-ACK which meets a first preset condition from the HARQ-ACK of the plurality of unicast transmissions;

selecting the HARQ-ACK with the highest transmission priority or PSSCH priority from the first HARQ-ACK and the HARQ-ACK of multicast transmission for transmission;

the first preset condition is any one of the following conditions: the PSSCH corresponding to the HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource corresponding to the HARQ-ACK is the most front.

18. The method of claim 17, further comprising:

the UE reports to the base station at least one of the following information: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

19. A transmission method of hybrid automatic repeat request acknowledgement (HARQ-ACK), which is applied to User Equipment (UE) applied to a side link of a new air interface Internet of vehicles (NR V2X), and comprises the following steps:

when collision occurs between the HARQ-ACK of unicast transmission and the HARQ-ACK of multiple multicast transmissions, selecting a first HARQ-ACK meeting a first preset condition from the HARQ-ACK of the multiple multicast transmissions;

selecting the HARQ-ACK with the highest transmission priority or PSSCH priority from the first HARQ-ACK and the unicast transmission HARQ-ACK for transmission;

the first preset condition is any one of the following conditions: the PSSCH corresponding to the HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource corresponding to the HARQ-ACK is the most front.

20. The method of claim 19, further comprising:

the UE reports to the base station at least one of the following information: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

21. A transmission method of hybrid automatic repeat request acknowledgement (HARQ-ACK), which is applied to User Equipment (UE) applied to a side link of a new air interface Internet of vehicles (NR V2X), and comprises the following steps:

when collision occurs between the HARQ-ACK and the CSI feedback, one of the HARQ-ACK or the CSI feedback is selected to be transmitted according to a second preset condition;

wherein the HARQ-ACK is unicast transmission HARQ-ACK or multicast transmission HARQ-ACK;

the second preset condition is any one of the following conditions:

the relation between the priority of PSSCH corresponding to HARQ-ACK and the priority threshold, the position of the first symbol of time domain resource or channel corresponding to HARQ-ACK and the position of the first symbol of time domain resource or channel corresponding to CSI feedback, and the predefined relation between the priority of HARQ-ACK and CSI feedback.

22. The method of claim 21, wherein the second predetermined condition is a size relationship between a priority of PSSCH corresponding to HARQ-ACK and a priority threshold,

selecting one of HARQ-ACK or CSI feedback for transmission according to a second preset condition, comprising:

when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than the priority threshold, selecting the HARQ-ACK for transmission;

and when the priority of the PSSCH corresponding to the HARQ-ACK is lower than a priority threshold, selecting CSI feedback for transmission.

23. The method according to claim 21, wherein the second preset condition is: the position of the first symbol of the time domain resource or channel corresponding to the HARQ-ACK and the position of the first symbol of the time domain resource or channel corresponding to the CSI feedback,

selecting one of HARQ-ACK or CSI feedback for transmission according to a second preset condition, comprising:

and selecting the HARQ-ACK or CSI feedback with the most front position of the first symbol of the corresponding time domain resource or channel for transmission.

24. The method according to claim 21, wherein the second preset condition is: a predefined priority relationship of HARQ-ACK to CSI feedback,

selecting one of HARQ-ACK or CSI feedback for transmission according to a second preset condition, comprising:

if the predefined priority of the HARQ-ACK is higher than the priority of the CSI feedback, the HARQ-ACK is selected to be transmitted;

and if the predefined priority of the HARQ-ACK is lower than the priority of the CSI feedback, selecting the CSI feedback for transmission.

25. The method according to any one of claims 21-24, further comprising:

the UE reports to the base station at least one of the following information: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

26. A transmission method of hybrid automatic repeat request acknowledgement (HARQ-ACK), which is applied to User Equipment (UE) applied to a side link of a new air interface Internet of vehicles (NR V2X), and comprises the following steps:

when collision occurs between the HARQ-ACK and the channel state information SR, one of the HARQ-ACK or the SR is selected to be transmitted according to a third preset condition;

wherein the HARQ-ACK is unicast transmission HARQ-ACK or multicast transmission HARQ-ACK;

the third preset condition is any one of the following conditions:

the relation between the priority of PSSCH corresponding to HARQ-ACK and the priority threshold, the relation between the position of the first symbol of time domain resource or channel corresponding to HARQ-ACK and the position of the first symbol of time domain resource or channel corresponding to SR, and the predefined relation between the priority of HARQ-ACK and SR.

27. The method of claim 26, wherein the third preset condition is a size relationship between a priority of PSSCH corresponding to HARQ-ACK and a priority threshold,

selecting one of the HARQ-ACK or the SR to transmit according to a second preset condition, comprising the following steps:

when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than the priority threshold, selecting the HARQ-ACK for transmission;

and when the priority of the PSSCH corresponding to the HARQ-ACK is lower than a priority threshold, selecting the SR for transmission.

28. The method according to claim 26, wherein the third preset condition is: the position of the first symbol of the time domain resource or channel corresponding to the HARQ-ACK is the position of the first symbol of the time domain resource or channel corresponding to the SR,

selecting one of the HARQ-ACK or the SR to transmit according to a second preset condition, comprising the following steps:

and selecting the HARQ-ACK or SR with the first symbol of the corresponding time domain resource or channel positioned most at the front for transmission.

29. The method according to claim 28, wherein the third preset condition is: a predefined priority relationship of HARQ-ACK to SR,

selecting one of the HARQ-ACK or the SR to transmit according to a second preset condition, comprising the following steps:

if the priority of the predefined HARQ-ACK is higher than that of the SR, selecting the HARQ-ACK for transmission;

and if the priority of the predefined HARQ-ACK is lower than that of the SR, selecting the SR for transmission.

30. The method according to any one of claims 28-29, further comprising:

the UE reports to the base station at least one of the following information: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

31. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the apparatus is applied to a User Equipment (UE) which is applied to a side link of a new air interface internet of vehicles (NR V2X), and the apparatus comprises:

the device comprises a first selection module, a second selection module and a transmission module, wherein the first selection module is used for selecting a first HARQ-ACK meeting a first preset condition from the plurality of HARQ-ACKs of unicast transmission when collision occurs among the plurality of HARQ-ACKs of unicast transmission;

a first transmission module, configured to transmit the first HARQ-ACK;

the first preset condition is any one of the following conditions: the physical side link shared channel PSSCH corresponding to the HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource or channel corresponding to the HARQ-ACK is the most front;

the device further comprises: and the first multiplexing transmission module is used for multiplexing the plurality of HARQ-ACKs and the destination address corresponding to each HARQ-ACK to a physical uplink control channel PUCCH for transmission when the plurality of unicast-transmitted HARQ-ACKs collide.

32. The apparatus of claim 31, further comprising:

a first discarding module to discard HARQ-ACKs of the plurality of unicast transmissions other than the first HARQ-ACK.

33. The apparatus of claim 31, further comprising:

a first deferral module, configured to defer HARQ-ACKs other than the first HARQ-ACK among HARQ-ACKs of the plurality of unicast transmissions in sequence from high to low to a next transmission opportunity according to a priority of the psch for transmission.

34. The apparatus of claim 31, further comprising:

and a second deferring module, configured to defer HARQ-ACKs, except the first HARQ-ACK, of the plurality of unicast transmissions to a next transmission opportunity sequentially from front to back according to a position of a first symbol of a time domain resource.

35. The apparatus of claim 31, further comprising:

and a second selecting module, configured to select, if the position of the first symbol of the time domain resource corresponding to the multiple unicast-transmitted HARQ-ACKs is the same, the HARQ-ACK with the longest or shortest time domain duration corresponding to the multiple unicast-transmitted HARQ-ACKs as the first HARQ-ACK, or select any one of the multiple unicast-transmitted HARQ-ACKs as the first HARQ-ACK.

36. The apparatus of claim 31, further comprising:

a reporting module, configured to report at least one of the following information to a base station by the UE: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

37. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the apparatus is applied to a User Equipment (UE) which is applied to a side link of a new air interface internet of vehicles (NR V2X), and the apparatus comprises:

the third selection module is used for selecting a first HARQ-ACK which meets a first preset condition from the HARQ-ACKs of the multicast transmission when collision occurs among the HARQ-ACKs of the multicast transmission;

a second transmission module for transmitting the first HARQ-ACK;

the first preset condition is any one of the following conditions: the priority of a physical side link shared channel PSSCH corresponding to the HARQ-ACK is the highest, and the position of a first symbol of a time domain resource corresponding to the HARQ-ACK is the most front;

the device further comprises:

and the second multiplexing transmission module is used for multiplexing the plurality of HARQ-ACKs and the destination address corresponding to each HARQ-ACK to a physical uplink control channel PUCCH for transmission when the plurality of HARQ-ACKs of multicast transmission collide.

38. The apparatus of claim 37, further comprising:

a second discarding module for discarding HARQ-ACKs of the plurality of multicast transmissions other than the first HARQ-ACK.

39. The apparatus of claim 37, further comprising:

and the third deferring module is used for deferring the HARQ-ACK except the first HARQ-ACK in the plurality of multicast transmission to the next transmission opportunity in sequence according to the priority of the PSSCH.

40. The apparatus of claim 37, further comprising:

and a fourth deferring module, configured to defer HARQ-ACKs, except the first HARQ-ACK, of the HARQ-ACKs for the multiple multicast transmissions sequentially from front to back to a next available transmission opportunity according to a position of a first symbol of a time domain resource.

41. The apparatus of claim 37, further comprising:

and the fourth selecting module is used for selecting the HARQ-ACK with the longest or shortest time domain duration corresponding to the HARQ-ACK of the multicast transmission as the first HARQ-ACK or selecting any HARQ-ACK of the multicast transmission as the first HARQ-ACK if the position of the first symbol of the time domain resource corresponding to the HARQ-ACK of the multicast transmission is the same.

42. The apparatus of claim 37, further comprising:

a reporting module, configured to report at least one of the following information to a base station by the UE: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

43. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the apparatus is applied to a User Equipment (UE) which is applied to a side link of a new air interface internet of vehicles (NR V2X), and the apparatus comprises:

a fifth selecting module, configured to select a HARQ-ACK with a highest priority for corresponding transmission from the unicast-transmitted HARQ-ACK and the multicast-transmitted HARQ-ACK for transmission when a collision occurs between the unicast-transmitted HARQ-ACK and the multicast-transmitted HARQ-ACK;

the device further comprises:

a sixth selection module, configured to select a HARQ-ACK with a highest priority for a corresponding pscsch from the unicast HARQ-ACK and the multicast HARQ-ACK for transmission when a collision occurs between the unicast HARQ-ACK and the multicast HARQ-ACK;

a sixth deferral module for deferring a low priority HARQ-ACK of the corresponding PSSCH to transmission to a next transmittable opportunity.

44. The apparatus of claim 43, wherein unicast transmissions have a higher priority than multicast transmissions.

45. The apparatus of claim 43 or 44, further comprising one or more of the following modules:

a third discarding module for discarding the HARQ-ACK with low priority corresponding to the transmission,

a fifth deferral module for deferring a low priority HARQ-ACK of a corresponding transmission for transmission to a next transmission opportunity.

46. The apparatus of claim 43, further comprising:

a reporting module, configured to report at least one of the following information to a base station by the UE: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

47. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the apparatus is applied to a User Equipment (UE) which is applied to a side link of a new air interface internet of vehicles (NR V2X), and the apparatus comprises:

a seventh selecting module, configured to select, when a collision occurs between multiple unicast-transmitted HARQ-ACKs and multicast-transmitted HARQ-ACKs, a first HARQ-ACK that meets a first preset condition from the multiple unicast-transmitted HARQ-ACKs;

an eighth selecting module, configured to select a HARQ-ACK with a highest transmission priority or a highest PSSCH priority from the first HARQ-ACK and the HARQ-ACK for multicast transmission, and transmit the HARQ-ACK;

the first preset condition is any one of the following conditions: the PSSCH corresponding to the HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource corresponding to the HARQ-ACK is the most front.

48. The apparatus of claim 47, further comprising:

a reporting module, configured to report at least one of the following information to a base station by the UE: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

49. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the apparatus is applied to a User Equipment (UE) which is applied to a side link of a new air interface internet of vehicles (NR V2X), and the apparatus comprises:

a ninth selecting module, configured to select, when a collision occurs between a unicast-transmitted HARQ-ACK and a plurality of multicast-transmitted HARQ-ACKs, a first HARQ-ACK that meets a first preset condition from the plurality of multicast-transmitted HARQ-ACKs;

a tenth selecting module, configured to select a HARQ-ACK with a highest transmission priority or a highest PSSCH priority from the first HARQ-ACK and the unicast transmission HARQ-ACK for transmission;

the first preset condition is any one of the following conditions: the PSSCH corresponding to the HARQ-ACK has the highest priority, and the position of the first symbol of the time domain resource corresponding to the HARQ-ACK is the most front.

50. The apparatus of claim 49, further comprising:

a reporting module, configured to report at least one of the following information to a base station by the UE: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

51. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the apparatus is applied to a User Equipment (UE) which is applied to a side link of a new air interface internet of vehicles (NR V2X), and the apparatus comprises:

an eleventh selecting module, configured to select one of the HARQ-ACK or the CSI feedback for transmission according to a second preset condition when a collision occurs between the HARQ-ACK and the CSI feedback;

wherein the HARQ-ACK is unicast transmission HARQ-ACK or multicast transmission HARQ-ACK;

the second preset condition is any one of the following conditions:

the relation between the priority of PSSCH corresponding to HARQ-ACK and the priority threshold, the position of the first symbol of time domain resource or channel corresponding to HARQ-ACK and the position of the first symbol of time domain resource or channel corresponding to CSI feedback, and the predefined relation between the priority of HARQ-ACK and CSI feedback.

52. The apparatus of claim 51, wherein the second preset condition is a relation between a priority of PSSCH corresponding to HARQ-ACK and a priority threshold,

the eleventh selecting module comprises:

the first selection unit is used for selecting the HARQ-ACK to transmit when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than a priority threshold;

and the second selection unit is used for selecting the CSI feedback for transmission when the priority of the PSSCH corresponding to the HARQ-ACK is lower than a priority threshold.

53. The apparatus according to claim 51, wherein the second preset condition is: the position of the first symbol of the time domain resource or channel corresponding to the HARQ-ACK and the position of the first symbol of the time domain resource or channel corresponding to the CSI feedback,

the eleventh selecting module comprises:

and the third selection unit is used for selecting the HARQ-ACK or CSI feedback with the most front position of the first symbol of the corresponding time domain resource or channel for transmission.

54. The apparatus according to claim 51, wherein the second preset condition is: a predefined priority relationship of HARQ-ACK to CSI feedback,

the eleventh selecting module comprises:

a fourth selection unit, configured to select HARQ-ACK for transmission if the predefined priority of HARQ-ACK is higher than the priority of CSI feedback;

and the fifth selection unit is used for selecting the CSI feedback for transmission if the predefined HARQ-ACK priority is lower than the CSI feedback priority.

55. The apparatus of any one of claims 51-54, further comprising:

a reporting module, configured to report at least one of the following information to a base station by the UE: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

56. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), wherein the apparatus is applied to a User Equipment (UE) which is applied to a side link of a new air interface internet of vehicles (NR V2X), and the apparatus comprises:

a twelfth selecting module, configured to select one of the HARQ-ACK and the SR for transmission according to a third preset condition when a collision occurs between the HARQ-ACK and the SR;

wherein the HARQ-ACK is unicast transmission HARQ-ACK or multicast transmission HARQ-ACK;

the third preset condition is any one of the following conditions:

the relation between the priority of PSSCH corresponding to HARQ-ACK and the priority threshold, the relation between the position of the first symbol of time domain resource or channel corresponding to HARQ-ACK and the position of the first symbol of time domain resource or channel corresponding to SR, and the predefined relation between the priority of HARQ-ACK and SR.

57. The apparatus of claim 56, wherein the third preset condition is a relation between a priority of a PSSCH corresponding to HARQ-ACK and a priority threshold,

the twelfth selection module includes:

a sixth selecting unit, configured to select the HARQ-ACK for transmission when the priority of the PSSCH corresponding to the HARQ-ACK is not lower than the priority threshold;

and the seventh selection unit is used for selecting the SR for transmission when the priority of the PSSCH corresponding to the HARQ-ACK is lower than the priority threshold.

58. The apparatus according to claim 56, wherein the third preset condition is: the position of the first symbol of the time domain resource or channel corresponding to the HARQ-ACK is the position of the first symbol of the time domain resource or channel corresponding to the SR,

the twelfth selection module includes:

and the eighth selecting unit is used for selecting the HARQ-ACK or SR with the most front position of the first symbol of the corresponding time domain resource or channel for transmission.

59. The apparatus according to claim 56, wherein the third preset condition is: a predefined priority relationship of HARQ-ACK to SR,

the twelfth selection module includes:

a ninth selecting unit, configured to select HARQ-ACK for transmission if the predefined priority of HARQ-ACK is higher than the priority of SR;

a tenth selecting unit, configured to select the SR for transmission if the predefined priority of HARQ-ACK is lower than the priority of the SR.

60. The apparatus of any one of claims 56-59, further comprising:

a reporting module, configured to report at least one of the following information to a base station by the UE: the method comprises the steps that the maximum number of unicast transmissions which can be simultaneously supported by the UE on a side link, the maximum number of multicast transmissions which can be simultaneously supported by the UE on the side link, the maximum number of the sum of unicast transmissions and multicast transmissions which can be simultaneously supported by the side link, the maximum number of HARQ processes of all unicast transmissions which can be supported by the side link, the maximum number of HARQ processes of all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of all unicast transmissions and all multicast transmissions which can be supported by the side link, the maximum number of the sum of HARQ processes of unicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on a Uu link, and the maximum number of the sum of HARQ processes of multicast transmissions which can be supported by the side link and HARQ processes which can be supported by the UE on the Uu link.

61. An apparatus for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK), comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to execute the instructions to implement the method of any one of claims 1-6;

alternatively, the processor is configured to execute the instructions to implement the method of any one of claims 7-12;

alternatively, the processor is configured to execute the instructions to implement the method of any one of claims 13-16;

alternatively, the processor is configured to execute the instructions to implement the method of any one of claims 17-18;

alternatively, the processor is configured to execute the instructions to implement the method of any one of claims 19-20;

alternatively, the processor is configured to execute the instructions to implement the method of any one of claims 21-25;

alternatively, the processor is configured to execute the instructions to implement the method of any of claims 26-30.

62. A non-transitory computer readable storage medium having stored thereon computer program instructions, which when executed by a processor implement the method of any one of claims 1 to 6, or the method of any one of claims 7 to 12, or the method of any one of claims 13 to 16, or the method of any one of claims 17 to 18, or the method of any one of claims 25 to 27, or the method of any one of claims 21 to 25, or the method of any one of claims 26 to 30.

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