WO2019109687A1

WO2019109687A1 - Ack/nack transmission method and corresponding apparatus

Info

Publication number: WO2019109687A1
Application number: PCT/CN2018/104019
Authority: WO
Inventors: 司倩倩; 高雪娟; 托尼
Original assignee: 电信科学技术研究院有限公司
Priority date: 2017-12-08
Filing date: 2018-09-04
Publication date: 2019-06-13
Also published as: CN109905210A; CN109905210B

Abstract

Provided are an ACK/NACK transmission method and a corresponding apparatus for solving the technical problem of there being a reception error when a base station detects an HARQ-ACK feedback and an index-less PUSCH according to rate matching and in 5G. The method comprises: using a fixed timing relationship to determine an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot needing to be fed back; and if an index-less PUSCH uplink time slot for transmitting index-less PUSCH resources is configured in a radio frame, delaying the transmission of the ACK/NACK, which needs to be transmitted in the index-less PUSCH uplink time slot according to the fixed timing relationship, to other uplink time slots in the radio frame according to a pre-set rule, wherein the index-less PUSCH is a PUSCH which is not controlled by DCI or a PUSCH which is controlled by DCI excluding a DAI; and the other uplink time slots are uplink time slots, other than the index-less PUSCH uplink time slot, in the radio frame.

Description

ACK/NACK transmission method and corresponding device

This application claims the priority of the Chinese Patent Application, filed on Dec. 8, 2017, filed Jan. No. No. No. No. No. No. No. No. No. In this application.

Technical field

The present application relates to the field of field communication technologies, and in particular, to an ACK/NACK transmission method and corresponding device.

Background technique

As the demand for mobile communication services changes, organizations such as the ITU (International Telecommunication Union) and 3GPP have begun to research new wireless communication systems, such as 5G NR (5 Generation New RAT, 5G New Air Port).

In the future 5G network construction, a PUSCH (Physical Uplink Shared Channel) that is not controlled by DCI (Downlink Control Information) and a DAI (Downlink Assignment Index) will be supported. The PUSCH controlled by the DCI may be referred to as an unindexed PUSCH, such as grant free PUSCH (grant free PUSCH), SPS PUSCH (Semi-persistent Scheduling PUSCH), and the like.

The PDSCH (Physical Downlink Shared Channel) is scheduled when the base station schedules the transmission of the HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement) and the PUSCH using the rate matching method. If the shared channel is transmitted and it corresponds to a HARQ-ACK feedback of more than 2 bits, and the HARQ-ACK feedback and the unindexed PUSCH transmission occur at the same time, if the UE (User Equipment) does not receive any PDSCH transmission, then The UE transmits only the unindexed PUSCH. At this time, the base station does not know that the UE does not receive any PDSCH transmission, and still detects the HARQ-ACK feedback and the unindexed PUSCH according to the rate matching manner, resulting in a reception error on the base station side.

Summary of the invention

An embodiment of the present application provides an ACK/NACK transmission method and a corresponding device, which are used to solve the technical problem that a base station in a 5G detects a HARQ-ACK feedback and an unindexed PUSCH according to a rate matching manner.

In a first aspect, an ACK/NACK transmission method is provided, including:

Using a fixed timing relationship to determine an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot that needs to be fed back;

If the unframed PUSCH uplink time slot for transmitting the unindexed physical uplink shared channel PUSCH resource is configured in the radio frame, the ACK/NACK transmitted in the unindexed PUSCH uplink time slot is required according to the fixed timing relationship, The preset rule is delayed to other uplink time slot transmissions in the radio frame;

The unindexed PUSCH is a PUSCH that is not controlled by the downlink control information DCI, or a PUSCH that is controlled by a DCI that does not include a downlink allocation index DAI; and the other uplink time slots are the non-indexed in the radio frame. Uplink time slot outside the PUSCH uplink time slot.

In a possible implementation manner, an ACK/NACK transmitted in the unindexed PUSCH uplink time slot is required according to the fixed timing relationship, and is delayed to other uplink time slot transmissions in the radio frame by a preset rule. ,include:

Determining, according to the uplink and downlink configuration information received in advance, all uplink time slots in the radio frame, and determining, according to the unindexed PUSCH configuration information received in advance, the unindexed PUSCH uplink time slot;

Determining, among all uplink time slots in the radio frame, a time slot other than the unindexed PUSCH uplink time slot is a feedback time slot that can be used for transmitting ACK/NACK;

Delaying the ACK/NACK to be delayed to the feedback slot transmission by the preset rule, wherein the ACK/NACK to be delayed needs to be uplinked on the unindexed PUSCH according to the fixed timing relationship ACK/NACK for slot transmission.

In a possible implementation, delaying the ACK/NACK to be delayed to the feedback time slot transmission by using the preset rule includes:

Delaying the ACK/NACK to be delayed, all transmitted to the latest feedback time slot in the feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed, wherein the original feedback The time slot is an uplink time slot determined according to the fixed timing relationship.

Determining, in the feedback slot, a manner of equally allocating downlink time slots in the radio frame that need to be fed back according to the number of the feedback time slots and the number of downlink time slots that need to be fed back in the radio frame. The number of downlink time slots that need to be fed back in each time slot is respectively obtained to obtain a set allocation quantity of each time slot in the feedback time slot;

Delaying the ACK/NACK to be delayed into the feedback time slot for transmission, so that the number of downlink time slots corresponding to each time slot in the feedback time slot that need to be fed back does not exceed the set allocation of itself. The quantity, and each time slot in the feedback time slot has a minimum time interval of the original feedback time slot corresponding to the ACK/NACK to be delayed, wherein the original feedback time slot is an uplink determined according to the fixed timing relationship. Time slot.

In a possible implementation, if a static codebook size is used, the ACK/NACK to be delayed is delayed to the feedback time slot transmission by the preset rule, including:

Determining a feedback codebook size of any one of the feedback time slots as a codebook size of any one of the feedback time slots before delay and an original feedback of ACK/NACK delayed to any one of the feedback time slots The sum of the codebook sizes of the slots.

In a possible implementation, if the dynamic codebook size is used, the ACK/NACK to be delayed is delayed to the feedback time slot transmission by the preset rule, including:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to any one of the feedback time slots corresponding to the delayed ACK/NACK delay The total DAI included in any DCI received in the feedback window determines the size of the feedback codebook of any one of the time slots, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink, the corresponding ACK/NACK delay is required according to the delay. The total DAI included in a DCI received in the feedback window of any time slot in the feedback time slot is determined, and the feedback codebook size of the any time slot is determined.

Determining, according to the feedback resource indication ARI included in any DCI received in the feedback window of any one of the feedback slots that are delayed after the ACK/NACK delay, determining whether to be transmitted in any one of the slots The physical uplink control channel PUCCH of the ACK/NACK is used to feed back the resource location to transmit the ACK/NACK to be transmitted in the any slot in the PUCCH feedback resource location, where the feedback window includes the need to perform in the same uplink time slot. All downlink time slots fed back.

If the total DAI in the DCI indicates the number of downlink slots that need to be fed back in the feedback window, the feedback window of any one of the feedback slots corresponding to the ACK/NACK delay after the delay is required. Determining an ARI included in any DCI, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be transmitted in any one of the slots, to transmit the any slot on the PUCCH feedback resource location ACK/NACK to be transmitted, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the feedback window of any one of the feedback time slots corresponding to the delayed ACK/NACK delay is used. The ARI included in the last received DCI, determining the location of the PUCCH feedback resource occupied by the ACK/NACK to be transmitted in any one of the slots, to transmit the to-be-transmitted in any of the slots in the PUCCH feedback resource location ACK/NACK.

In a second aspect, an ACK/NACK transmission method is provided, including:

Determining, according to the uplink and downlink configuration information and the unindexed physical uplink shared channel PUSCH configuration information, that the terminal needs to transmit the ACK/NACK in the unindexed PUSCH uplink time slot according to the fixed timing relationship;

Receiving, in a preset rule, the ACK/NACK transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship in the other uplink time slots in the radio frame;

In a possible implementation manner, the ACK/in the uplink time slot of the unindexed PUSCH is required to be received according to the fixed timing relationship in other uplink time slots in the radio frame by using a preset rule. NACK, including:

Receiving, in the feedback time slot, the ACK/NACK delayed to the feedback time slot transmission by using the preset rule, wherein the ACK/NACK to be delayed is required according to the fixed timing relationship The ACK/NACK of the unindexed PUSCH uplink time slot transmission.

In a possible implementation manner, receiving, in the feedback time slot, the ACK/NACK delayed to the feedback time slot transmission by using the preset rule, includes:

Receiving, in the feedback time slot, the most recent feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed, receiving the ACK/NACK required to be delayed, wherein the original feedback time slot An upstream time slot determined according to the fixed timing relationship.

And receiving, in each of the time slots in the feedback time slot, an ACK/NACK corresponding to a maximum time interval between the original feedback time slot and the feedback time slot in the ACK/NACK to be delayed, where the time slot is received in each time slot. The number of ACK/NACKs does not exceed the set allocation number of each time slot itself, and the original feedback time slot is an uplink time slot determined according to the fixed timing relationship.

In a possible implementation, if a static codebook size is used, the ACK/NACK that is delayed to be transmitted to the feedback time slot in the feedback time slot by using the preset rule includes:

In a possible implementation, if the dynamic codebook size is used, the ACK/NACK that is delayed to be transmitted to the feedback time slot in the feedback time slot by using the preset rule includes:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to any one of the feedback time slots corresponding to the delayed ACK/NACK delay Determining, by the total DAI included in any DCI in the feedback window, a feedback codebook size of any one of the time slots, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink, the corresponding ACK/NACK delay is required according to the delay. The total DAI included in one of the last transmitted DCIs in the feedback window of any time slot in the feedback time slot determines the size of the feedback codebook of the any time slot.

Determining an ACK to be transmitted in any one of the slots according to the feedback resource indication ARI included in any DCI sent in the feedback window of any one of the feedback slots that is delayed after the ACK/NACK delay is to be delayed. The physical uplink control channel PUCCH of the /NACK is used to feed back the resource location to receive the ACK/NACK to be received in the any slot in the PUCCH feedback resource location, where the feedback window includes feedback in the same uplink slot. All downstream time slots.

If the total DAI in the DCI indicates the number of downlink slots that need to be fed back in the feedback window, the feedback window of any one of the feedback slots corresponding to the ACK/NACK delay after the delay is required. An ARI included in any DCI transmitted, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be received in any one of the slots, to receive the any slot in the PUCCH feedback resource location ACK/NACK to be received, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the feedback window of any one of the feedback time slots corresponding to the delayed ACK/NACK delay is used. The ARI included in the last DCI transmitted, determines the PUCCH feedback resource location occupied by the ACK/NACK to be received in any one of the slots, to receive the ACK to be received in the any slot in the PUCCH feedback resource location /NACK.

In a third aspect, an ACK/NACK transmission device is provided, including:

a determining module, configured to determine, by using a fixed timing relationship, an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot that needs to be fed back;

a transmission module, configured to: if an unindexed PUSCH uplink time slot for transmitting an unindexed physical uplink shared channel PUSCH resource is configured in a radio frame, to be transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship ACK/NACK, delayed by a preset rule to other uplink time slots in the radio frame;

In a possible implementation manner, the transmission module is configured to:

In a possible implementation, if a static codebook size is used, the transmission module is used to:

In a possible implementation, if a dynamic codebook size is used, the transmission module is used to:

In a fourth aspect, an ACK/NACK transmission device is provided, including:

a determining module, configured to determine, according to the uplink and downlink configuration information and the unindexed physical uplink shared channel PUSCH configuration information, that the terminal needs to transmit an ACK/NACK in the unindexed PUSCH uplink time slot according to a fixed timing relationship;

a receiving module, configured to receive, by using a preset rule, an ACK/NACK that is transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship in other uplink time slots in the radio frame;

In a possible implementation manner, the receiving module is configured to:

In a possible implementation, if a static codebook size is used, the receiving module is configured to:

In a possible implementation, if a dynamic codebook size is used, the receiving module is configured to:

If the total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back in the feedback window, the feedback window of any one of the feedback time slots corresponding to the delayed ACK/NACK delay is used. An ARI included in any DCI transmitted, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be received in any one of the slots, to receive the any slot in the PUCCH feedback resource location ACK/NACK to be received, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

In a fifth aspect, an ACK/NACK transmission device is provided, where the device includes:

At least one processor, and

a memory coupled to the at least one processor;

Wherein the memory stores instructions executable by the at least one processor, the at least one processor performing the method of the first aspect and/or the second aspect by executing the instructions stored by the memory.

In a sixth aspect, a computer readable storage medium is provided, comprising:

The computer readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of the first aspect and/or the second aspect.

The embodiment of the present application provides a new ACK/NACK transmission method, where a fixed time series relationship is used to determine an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot that needs to be fed back, and if a wireless frame is configured for transmission The unindexed PUSCH uplink time slot of the unindexed physical uplink shared channel PUSCH resource, the ACK/NACK transmitted in the unindexed PUSCH uplink time slot is required according to the fixed timing relationship, and is delayed into the wireless frame by a preset rule. Other upstream time slot transmissions.

By delaying the ACK/NACK required to be transmitted in the unindexed PUSCH uplink time slot and delaying to other uplink time slot transmissions in the radio frame by a preset rule, ACK/NACK transmission and unindexed PUSCH transmission are prevented from being transmitted in the same time slot, thereby When the base station detects the HARQ-ACK feedback and the unindexed PUSCH according to the rate matching manner, no reception error occurs.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is an embodiment of the present application, and other drawings can be obtained according to the provided drawings for those skilled in the art without any creative work.

FIG. 1 is a schematic flowchart of an ACK/NACK transmission method according to an embodiment of the present application;

2 is a schematic diagram of delay feedback of an ACK/NACK transmission method in an embodiment of the present application;

FIG. 3 is a schematic diagram of delay feedback of another ACK/NACK transmission method according to an embodiment of the present application; FIG.

4 is a schematic flowchart of another ACK/NACK transmission method according to an embodiment of the present application;

FIG. 5 is a structural block diagram of an ACK/NACK transmission device according to an embodiment of the present application;

FIG. 6 is a structural block diagram of another ACK/NACK transmission device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

In addition, the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this document generally indicates that the contextual object is an "or" relationship unless otherwise specified. In addition, it should be understood that in the description of the embodiments of the present application, the terms "first", "second" and the like are used only to distinguish the purpose of description, and are not to be understood as indicating or suggesting relative importance, nor understanding. Indicated or implied order.

First, the related technologies and application scenarios of the present application are introduced.

In an LTE (Long Term Evolution) wireless communication system, when a UE needs to transmit uplink data on a PUSCH of a certain subframe and simultaneously needs to send uplink control information (such as ACK/NACK, CQI, PMI, RI), If the UE does not support the simultaneous transmission of the PUCCH (Physical Uplink Control CHannel) and the PUSCH, the uplink control information will be multiplexed with the data and transmitted together on the PUSCH.

In LTE, since the downlink data transmission has a fixed timing relationship with the corresponding ACK/NACK (Acknowledgement/Negative ACKnowledgment), the eNodeB (Evolved Node B) can know when to receive from The ACK/NACK of the UE is therefore able to correctly decode the ACK/NACK and data. However, when the eNodeB sends the PDCCH for downlink scheduling, and the UE does not receive the ACK/NACK, the eNodeB expects to receive the ACK/NACK, resulting in a mismatch between the UE coding and the eNodeB decoding mode. That is to say, if the rate matching at this time depends on whether ACK/NACK is transmitted, data decoding may fail. In order to avoid such an error, in LTE, HARQ-ACK is always mapped on the PUSCH by puncturing, so that the unpunctured bit information is not affected by the presence or absence of ACK/NACK.

However, in 5G NR, support for mini-slot (microslot) transmission, support for CBG-based feedback (Code Block Group based feedback, based on coding block group feedback), and multi-carrier transmission, etc., HARQ-ACK feedback The number of bits may be larger. If the HARQ-ACK is still transmitted by puncturing the PUSCH, a lot of information of the PUSCH is punctured by the HARQ-ACK, which has a great influence on the transmission performance of the PUSCH, so the 5G NR can The HARQ-ACK for 1-2 bits is transmitted in a PUSCH puncturing manner, and is transmitted in a manner of HARQ-ACK usage greater than 2 bits and PUSCH rate matching. For a PUSCH transmission with a UL grant (uplink scheduling indication) scheduling, a DAI (Downlink Assignment Index) information field is included in the UL grant, and is used to indicate the number of HARQ-ACK bits transmitted on the PUSCH.

In the 5G NR, a PUSCH that is not controlled by DCI and a PUSCH that is controlled by DCI that does not include DAI are also supported. This type of PUSCH may be referred to as an unindexed PUSCH, such as grant free PUSCH, SPS PUSCH, and the like. Taking the grant-free PUSCH transmission as an example, the base station does not send any scheduling information to the grant-free PUSCH, and only configures the location and some configuration information of the grant-free PUSCH transmission by the UE through RRC signaling. The UE performs grant-free PUSCH transmission according to the configuration information in a pre-configured location of the base station.

In the 5G NR, the downlink data transmission and the corresponding ACK/NACK may be a fixed timing relationship or a dynamically determined timing relationship. If it is a dynamically determined timing relationship, the base station may indicate the downlink data transmission corresponding ACK/NACK through the DCI. The feedback position, if it is a fixed timing relationship, the feedback position of the ACK/NACK corresponding to the downlink data transmission is predefined in the standard.

Taking the grant-free PUSCH transmission as an example, the base station does not send any scheduling information to the grant-free PUSCH. If a fixed timing relationship is used and the base station schedules PDSCH transmission and it corresponds to more than 2 bits of HARQ-ACK feedback, and the HARQ-ACK feedback and grant free PUSCH transmission occur at the same time, if the UE does not receive any PDSCH transmission , only the grant free PUSCH is transmitted. At this time, the base station does not know that the UE does not receive any PDSCH transmission, and still detects the HARQ-ACK feedback and the grant free PUSCH according to the rate matching manner, resulting in a base station side receiving error.

The core idea of the embodiment of the present application is: when a fixed timing relationship is used between a downlink data transmission and a corresponding ACK/NACK transmission, if there is an unindexed PUSCH transmission in the system, delaying HARQ in the unindexed PUSCH possible transmission slot - ACK is fed back to other upstream time slots that can transmit HARQ-ACK feedback.

In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the drawings and specific embodiments.

It should be noted that the embodiments described below are based on the same inventive concept, and the contents described in other embodiments may be referred to when understanding or interpreting the contents of any of the embodiments.

Embodiment 1

Referring to FIG. 1 , an embodiment of the present application provides an ACK/NACK transmission method, where the method may be used for performing ACK/NACK transmission between devices, for example, the UE may perform ACK/NACK transmission to a base station. The UE may be a personal computer (PC), a notebook, a mobile phone, an Internet of Things device, a wearable device, etc., and is not limited to the specific type of the UE.

The flow of the ACK/NACK transmission method in this embodiment of the present application is described as follows:

Step 101: Determine, by using a fixed timing relationship, an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot that needs to be fed back.

Step 102: If an unindexed PUSCH uplink time slot for transmitting the unindexed physical uplink shared channel PUSCH resource is configured in the radio frame, the ACK/NACK transmitted in the unindexed PUSCH uplink time slot is required according to a fixed timing relationship. The rule is delayed to other uplink time slot transmissions in the radio frame; wherein the unindexed PUSCH is a PUSCH that is not controlled by the downlink control information DCI, or a PUSCH controlled by the DCI that does not include the downlink allocation index DAI; other uplink time slots are An uplink time slot other than the unindexed PUSCH uplink time slot in the radio frame.

It should be noted that the time slot described in the embodiment of the present application may be a slot or a mini-slot.

In a specific implementation process, in step 102, the ACK/NACK transmitted in the unindexed PUSCH uplink time slot is required according to a fixed timing relationship, and the delay to the other uplink time slot transmission in the radio frame by the preset rule may be divided into three. The parts are respectively determining a feedback time slot portion, determining a delay position portion, and determining a feedback codebook size and a feedback resource portion. The following three examples are illustrated:

Part 1: Determining the feedback time slot

In the embodiment of the present application, when the UE accesses the wireless communication system, the base station may send uplink and downlink configuration information and unindexed PUSCH configuration information to the UE. The uplink and downlink configuration information defines a downlink time slot and an uplink time slot in the radio frame, and the unindexed PUSCH configuration information defines an unindexed PUSCH uplink time slot in the radio frame for transmitting the unindexed PUSCH.

The UE may determine all uplink time slots in the radio frame according to the uplink and downlink configuration information received in advance, and determine an unindexed PUSCH uplink time slot for transmitting the unindexed PUSCH in the radio frame according to the previously received unindexed PUSCH configuration information. Furthermore, it can be determined that the time slots other than the unindexed PUSCH uplink time slot in all uplink time slots in the radio frame are feedback time slots available for transmitting ACK/NACK.

During transmission, the UE may delay the ACK/NACK to be delayed to the feedback slot transmission by a preset rule, and the base station may receive the delayed ACK/NACK after the delay in the feedback slot. The ACK/NACK to be delayed is an ACK/NACK that needs to be transmitted in the unindexed PUSCH uplink time slot according to a fixed timing relationship.

Part II: Determining the delay position

In the embodiment of the present application, the specific implementation manner of delaying the ACK/NACK to be delayed to the feedback time slot by using a preset rule includes two types:

1, the shortest delay method

The ACK/NACK to be delayed is all delayed until the last feedback slot in the feedback time slot with the smallest original transmission slot time interval of the ACK/NACK to be delayed.

The original feedback time slot is an uplink time slot determined according to a fixed timing relationship, that is, an uplink time slot corresponding to the ACK/NACK to be delayed before the delay.

During transmission, the UE may transmit all ACK/NACKs that need to be delayed in the most recent feedback time slot, and the base station may receive all ACK/NACKs that need to be delayed on the most recent feedback time slot.

2, the shortest delay and bit equalization delay

First, according to the number of feedback slots in the radio frame and the number of downlink slots that need to be fed back in the radio frame, the time slots in the feedback slot are determined by equally allocating the downlink slots that need to be fed back in the radio frame. The number of downlink time slots that need to be fed back separately is obtained to obtain the set allocation number of each time slot in the feedback time slot.

Further, the ACK/NACK to be delayed is sequentially delayed to be transmitted in the feedback time slot, so that the number of downlink time slots corresponding to each time slot in the feedback time slot that need to be fed back does not exceed its own set allocation amount, and the feedback time slot The time slot of the original feedback slot corresponding to the ACK/NACK to be delayed in each slot is the smallest.

That is, for any ACK/NACK that needs to be delayed, it may be determined in all the feedback slots in the radio frame that the number of downlink slots that need to be fed back does not exceed the set number of feedback slots of its own, and is determined. Among the feedback time slots, the feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed is the feedback time slot corresponding to any ACK/NACK delay that needs to be delayed.

In a specific implementation process, for any ACK/NACK that needs to be delayed, it may be determined whether the number of downlink time slots that need to be fed back in the latest feedback time slot in the radio frame exceeds the feedback slot of the set number of allocations. If not exceeded, delay any ACK/NACK that needs to be delayed to the latest feedback time slot. If it is exceeded, determine whether the number of downlink time slots that need to be fed back in the next feedback time slot after the most recent feedback time slot is If the feedback time slot exceeding the set number of its own allocation is not exceeded, then any ACK/NACK that needs to be delayed is delayed to the next feedback time slot. If it is exceeded, the subsequent feedback time slot is continuously determined. The feedback time slot that knows that the number of downlink time slots that need to be fed back does not exceed its own set allocation number is the corresponding feedback time slot after any ACK/NACK delay that needs to be delayed.

During transmission, the UE may respectively transmit ACK/NACKs that need to be delayed in corresponding feedback slots after each ACK/NACK delay that needs to be delayed; and the base station transmits corresponding feedback slots after each delayed ACK/NACK delay. Each ACK/NACK that needs to be delayed receives each ACK/NACK that needs to be delayed.

In other words, the base station can receive, in each time slot in each feedback slot, each ACK/NACK in the ACK/NACK that needs to be delayed, the corresponding original feedback slot and the feedback slot. The ACK/NACK with the largest time interval, wherein the number of ACK/NACKs received in each slot in each feedback slot does not exceed the set allocation number of each slot itself.

Part III: Determining the feedback codebook size and feedback resources

Determine the size of the feedback codebook:

When determining the feedback codebook size of the corresponding feedback slot after the ACK/NACK delay to be delayed, the static codebook size and the dynamic codebook size are used:

Case 1: Using static codebook size

When the static codebook size is used, the feedback codebook size of any feedback slot in the corresponding feedback slot after the delayed ACK/NACK delay is determined by two parts, and part of the codebook of any feedback slot before the delay The size and the other part are the codebook size of the original feedback time slot delayed to the ACK/NACK of any of the feedback slots. The sum of the size of the two parts of the codebook is the feedback code of the corresponding feedback slot corresponding to the delay. This size.

Case 2: Using dynamic codebook size

When the dynamic codebook size is used, the feedback codebook size of the corresponding feedback slot after the ACK/NACK delay to be delayed may be determined according to the total DAI (Total Downlink Allocation Index) indicated in the DCI.

among them:

1. If the total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to the feedback window received in any feedback slot of the corresponding feedback time slot after the delayed ACK/NACK delay The total DAI contained in any DCI determines the size of the feedback codebook for any of the slots. The feedback window includes all downlink time slots that need to be fed back in the same uplink time slot.

That is, if the total DAI indicates the number of all downlink PDSCH slots/mini-slots in the feedback window, the total DAI includes all PDSCH slots that should be scheduled by the base station in the new feedback window corresponding to the post-delay feedback slot. The number of mini-slots, the UE assumes that the base station indicates the same total DAI in all downlink DCIs in the new feedback window corresponding to the feedback slot after the delay.

2. If the total DAI in the DCI indicates that the number of downlink slots that have been scheduled by the base station to be fed back in the feedback window when the downlink slot of the DCI is downlinked, the corresponding feedback according to the ACK/NACK delay to be delayed The total DAI included in a DCI received in the feedback window of any time slot in the time slot determines the size of the feedback codebook of the any time slot.

That is, if the total DAI indicates the number of PDSCH slots/mini-slots that the base station has scheduled when the DCI is downlinked, the total DAI included in the last received DCI in the new feedback window corresponding to the delayed feedback slot is determined. The feedback codebook size of the feedback slot.

Identify feedback resources:

When determining the feedback resource of the corresponding feedback slot after the ACK/NACK delay to be delayed, the static codebook size and the dynamic codebook size are used:

Case 1: Using static codebook size

Determining any of the time slots according to the feedback resource indication ARI (ACK Resource Indicator) included in any DCI received in the feedback window of any slot in the corresponding feedback slot after the delay of the ACK/NACK delay to be delayed The physical uplink control channel PUCCH occupied by the ACK/NACK to be transmitted internally feeds back the resource location to transmit the ACK/NACK to be transmitted in the any slot in the PUCCH feedback resource location.

That is, if the static codebook size is used, the terminal considers that the ARI indication fields included in all DCIs in the new feedback window corresponding to the feedback position after the delay are the same, and the PUCCH resource indicated by the ARI can carry the new feedback window corresponding to the feedback position after the delay. All feedback in the middle.

Case 2: Using dynamic codebook size

When the dynamic codebook size is used, the feedback resource corresponding to the feedback slot after the ACK/NACK delay to be delayed may be determined according to the ARI indicated in the DCI.

among them:

1. If the total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to the feedback window received in any feedback slot of the corresponding feedback time slot after the delayed ACK/NACK delay An ARI included in any DCI, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be transmitted in any one slot, to transmit an ACK/NACK to be transmitted in the any slot in the PUCCH feedback resource location .

That is, the UE assumes that the base station indicates the same ARI in all downlink DCIs in the new feedback window corresponding to the feedback position after the delay.

2. If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the last feedback window of any time slot in the corresponding feedback time slot according to the ACK/NACK delay to be delayed The received ARI of the DCI determines the location of the PUCCH feedback resource occupied by the ACK/NACK to be transmitted in any one of the slots, to transmit the ACK/NACK to be transmitted in the any slot in the PUCCH feedback resource location.

For ease of understanding, the technical solutions in the embodiments of the present application are exemplified in the following two specific embodiments. In the two specific embodiments, the unindexed PUSCH is used as the grant-free PUSCH, but it can be understood that part or all of the grant-free PUSCH in the specific embodiment may be replaced with other types of unindexed PUSCH. .

Specific embodiment 1:

As shown in Figure 2, suppose a radio frame contains 10 slots, of which the first 5 slots are downlink and the last 5 slots are uplink. If the base station does not configure grant-free PUSCH transmission, the corresponding uplink feedback slot is m+5 for the downlink slot m. If the base station configures slot n+5, slot n+6, and slot n+7 as the possible transmission locations of the grant-free PUSCH, the location that the UE can use to transmit the HARQ-ACK feedback is slot n+8 and slot n+9. According to the principle of the shortest delay, the UE delays the HARQ-ACK feedback of slot n, slot n+1 and slot n+2 to slot n+8 for transmission.

1. It is assumed that the base station configures the UE to use single-carrier single-codeword transmission. When the static codebook size is used, the delay feedback position slot n+8 corresponds to the new feedback codebook size as the original slot n+5, slot n+6 and slot. The sum of the codebook size corresponding to n+7 and the codebook size corresponding to the original slot n+8, that is, the delay feedback position slot n+8 corresponds to a new feedback codebook size of 4. The base station indicates the same ARI information in the DCI of slot n, slot n+1, slot n+2, and slot n+3, and the terminal may determine the PUCCH feedback resource according to any one of the ARIs.

2. It is assumed that the base station configures the UE to use the dynamic codebook feedback mode. It is assumed that the base station schedules the data transmission in slot n and slot n+3. After the delay, the feedback position slot n+8 corresponds to the new feedback codebook size determined according to the total DAI:

2.1 If the total DAI indicates the number of all downlink PDSCH slots/mini-slots in the feedback window, the total DAI value in the DCI transmitted by the slot n and the slot n+3 in the present embodiment is 2, and the UE according to the slot n Or the total DAI included in the DCI of the slot n+3 determines that the feedback codebook size of the feedback position slot n+8 is 2 after the delay, and determines the PUCCH feedback resource according to the ARI included in the slot n or slot n+3;

2.2 If the total DAI indicates the number of PDSCH slots/mini-slots scheduled by the base station to the current location, the total DAI value in the DCI transmitted by slot n in this embodiment is 1, and the total in the DCI transmitted by slot n+3 The DAI value is 2, and the UE determines the feedback codebook size of the post-delay feedback position slot n+8 according to the total DAI included in the DCI of the slot n+3, and determines the PUCCH feedback resource according to the ARI included in the DCI.

Specific embodiment 2:

As shown in Figure 3, suppose a radio frame contains 10 slots, of which the first 5 slots are downlink and the last 5 slots are uplink. If the base station does not configure grant-free PUSCH transmission, the corresponding uplink feedback slot is m+5 for the downlink slot m. If the base station configures slot n+5, slot n+6, and slot n+7 as the possible transmission locations of the grant-free PUSCH, the location that the UE can use to transmit the HARQ-ACK feedback is slot n+8 and slot n+9. According to the principle of shortest delay and bit-equalization, the UE delays the HARQ-ACK feedback of slot n and slot n+1 to slot n+8 for transmission, and delays the HARQ-ACK feedback of slot n+2 to slot n+9. Transfer.

1. It is assumed that the base station configures the UE to use single-carrier single-codeword transmission. When the static codebook size is used, the delay feedback position slot n+8 corresponds to the new feedback codebook size corresponding to the original slot n+5 and slot n+6. The codebook size is the sum of the codebook size corresponding to the original slot n+8, that is, the delayed feedback position slot n+8 corresponds to a new feedback codebook size of 3; after the delay, the feedback position slot n+9 corresponds to a new feedback codebook. The size is the sum of the codebook size corresponding to the original slot n+7 and the codebook size corresponding to the original slot n+9, that is, the delay feedback position slot n+9 corresponds to a new feedback codebook size of 2. The base station indicates the same ARI information in the DCI of slot n, slot n+1, and slot n+3, and the terminal may determine the PUCCH feedback resource in slot n+8 according to any one ARI; the base station is in slot n+2 and slot n+ The same ARI information is indicated in the DCI of 4, and the terminal can determine the PUCCH feedback resource in slot n+9 according to any one ARI.

2. It is assumed that the base station configures the UE to use the dynamic codebook feedback mode, and assumes that the base station schedules data transmission in slot n, slot n+1, slot n+2, slot n+3, and slot n+4, and delays the feedback position slot. N+8 and slot n+9 correspond to the new feedback codebook size determined by total DAI:

2.1 If the total DAI indicates the number of all downlink PDSCH slots/mini-slots in the feedback window, the total DAI values in the DCIs transmitted in slot n, slot n+1, and slot n+3 in this embodiment are all 3. The UE determines, according to the total DAI included in the DCI of slot n, slot n+1 or slot n+3, that the feedback codebook size of the feedback position slot n+8 is 3, according to slot n, slot n+1 or slot n The ARI included in the DCI of +3 determines the PUCCH feedback resource in slot n+8; the total DAI value in the DCI transmitted by slot n+2 and slot n+4 is 2, and the UE according to slot n+2 or slot n+4 The total DAI included in the DCI determines the feedback codebook size of the feedback position slot n+9 after delay is 2, and determines the PUCCH feedback resource in slot n+9 according to the ARI included in the slot n+2 or slot n+4.

2.2 If the total DAI indicates the number of PDSCH slots/mini-slots scheduled by the base station to the current location, the total DAI value in the DCI transmitted by slot n in this embodiment is 1, and the total in the DCI transmitted by slot n+1 The DAI value is 2, and the total DAI value in the DCI transmitted by slot n+3 is 3, and the UE determines the feedback codebook size of the feedback position slot n+8 after the delay according to the total DAI included in the DCI of slot n+3, and Determine the PUCCH feedback resource in slot n+8 according to the ARI included in the DCI of slot n+3; the total DAI value in the DCI transmitted by slot n+2 is 1, and the total DAI value in the DCI transmitted in slot n+4 is 2. The UE determines, according to the total DAI included in the DCI of the slot n+4, the feedback codebook size of the post-delay feedback position slot n+9 is 2, and determines the PUCCH feedback in the slot n+9 according to the ARI included in the DCI of the slot n+4. Resources.

Embodiment 2

Based on the same inventive concept, the embodiment of the present application provides an ACK/NACK transmission method, where the method may be used for performing ACK/NACK transmission between devices, for example, the base station may receive an ACK/NACK sent by the UE, and the base station is The UE may be the UE in the first embodiment, and the UE may be the UE in the first embodiment. Specifically, at least the ACK/NACK transmitted by the transmission method in Embodiment 1 can be received by the transmission method in the embodiment of the present application.

Referring to FIG. 4, the flow of the ACK/NACK transmission method in the embodiment of the present application is described as follows:

Step 401: Determine, according to the uplink and downlink configuration information and the unindexed PUSCH configuration information, that the terminal needs to transmit an ACK/NACK in an unindexed PUSCH uplink time slot according to a fixed timing relationship, where the unindexed PUSCH is a PUSCH that is not controlled by the DCI. Or, a PUSCH controlled by a DCI that does not include DAI.

Step 402: Receive, in a preset rule, an ACK/NACK that needs to be transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship in other uplink time slots in the radio frame, where the The other uplink time slots are uplink time slots in the radio frame except for the unindexed PUSCH uplink time slot.

In a possible implementation manner, the ACK/NACK that needs to be transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship after receiving the delay in the other uplink time slots in the radio frame according to the preset rule includes:

Determining, among all uplink time slots in the radio frame, that the time slots except the unindexed PUSCH uplink time slot are feedback time slots available for transmitting ACK/NACK;

The ACK/NACK of the delay to the feedback slot transmission is delayed in the feedback slot by using a preset rule, wherein the ACK/NACK to be delayed is an ACK that needs to be transmitted in the unindexed PUSCH uplink slot according to a fixed timing relationship. NACK.

In a possible implementation manner, the ACK/NACK of the delay to the feedback slot transmission is delayed in the feedback time slot by using a preset rule, including:

Receiving all ACK/NACKs that need to be delayed on the most recent feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed in the feedback time slot, wherein the original feedback time slot is determined according to a fixed timing relationship. Uplink time slot.

According to the number of feedback time slots and the number of downlink time slots that need to be fed back in the radio frame, the downlink time slots that need to be fed back in the radio frame are evenly allocated, and the feedback needs to be respectively determined in each time slot in the feedback time slot. The number of downlink time slots to obtain a set allocation number of each time slot in the feedback time slot;

And sequentially receiving, in each slot in the feedback slot, an ACK/NACK corresponding to the original feedback slot and the feedback slot in the ACK/NACK to be delayed, wherein the number of ACK/NACKs received in each slot The set number of allocations of each time slot itself is not exceeded, and the original feedback time slot is an uplink time slot determined according to a fixed timing relationship.

In a possible implementation manner, if the static codebook size is used, the ACK/NACK of the delay to the feedback time slot transmission is delayed in the feedback time slot by using a preset rule, including:

Determining the feedback codebook size of any feedback slot in the feedback slot is the sum of the codebook size of any feedback slot before delay and the codebook size of the original feedback slot delayed to ACK/NACK of any feedback slot .

In a possible implementation manner, if the dynamic codebook size is used, the ACK/NACK of the delay to the feedback time slot transmission is delayed in the feedback time slot by using a preset rule, including:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, the feedback window is sent according to any time slot in the corresponding feedback time slot after the ACK/NACK delay to be delayed. The total DAI included in any DCI determines the size of the feedback codebook of any time slot, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink transmission, the corresponding feedback time slot according to the ACK/NACK delay to be delayed The total DAI contained in one of the last transmitted DCIs in the feedback window of any slot in the slot determines the size of the feedback codebook for any slot.

Determining the physical uplink occupied by the ACK/NACK to be transmitted in any slot according to the feedback resource indication ARI included in any DCI sent in the feedback window of any slot in the corresponding feedback slot after the ACK/NACK delay to be delayed The control channel PUCCH feeds back the resource location to receive the ACK/NACK to be received in any time slot at the PUCCH feedback resource location, wherein the feedback window includes all downlink time slots that need to be fed back in the same upstream time slot.

If the total DAI in the DCI indicates the number of downlink slots that need to be fed back in all the feedback windows, the ACK/NACK delay is required to be sent in the feedback window of any slot in the corresponding feedback slot. An ARI included in a DCI determines a physical uplink control channel PUCCH feedback resource location occupied by an ACK/NACK to be received in any time slot to receive an ACK/NACK to be received in any time slot at a PUCCH feedback resource location, wherein, the feedback The window includes all downlink time slots that need to be fed back in the same upstream time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, according to the last sent back in the feedback window of any time slot in the corresponding feedback time slot after the ACK/NACK delay to be delayed An ARI included in a DCI determines a PUCCH feedback resource location occupied by an ACK/NACK to be received in any slot to receive an ACK/NACK to be received in any slot at a PUCCH feedback resource location.

Embodiment 3

Referring to FIG. 5, based on the same inventive concept, an embodiment of the present application provides an ACK/NACK transmission device, where the device may be the UE in

Embodiments

1 and 2. The device includes at least a determining module 501 and a transmitting module 502, wherein:

a determining module 501, configured to determine, by using a fixed timing relationship, an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot that needs to be fed back;

The transmitting module 502 is configured to: if an unindexed PUSCH uplink time slot for transmitting the unindexed physical uplink shared channel PUSCH resource is configured in the radio frame, the ACK/NACK required to be transmitted in the unindexed PUSCH uplink time slot according to a fixed timing relationship , delaying to other uplink time slot transmissions in the radio frame by a preset rule;

The unindexed PUSCH is a PUSCH that is not controlled by the downlink control information DCI, or a PUSCH that is controlled by the DCI that does not include the downlink allocation index DAI; and other uplink time slots are uplinks except for the unindexed PUSCH uplink time slot in the radio frame. Gap.

In a possible implementation, the transmission module 502 is configured to:

Determining, according to the uplink and downlink configuration information received in advance, all uplink time slots in the radio frame, and determining an unindexed PUSCH uplink time slot according to the unreferenced PUSCH configuration information received in advance;

The ACK/NACK to be delayed is delayed to the feedback slot transmission by a preset rule, wherein the ACK/NACK to be delayed is an ACK/NACK that needs to be transmitted in the unindexed PUSCH uplink slot according to a fixed timing relationship.

In a possible implementation, the transmission module 502 is configured to:

Delaying the ACK/NACK to be delayed, all delayed to the nearest feedback slot in the feedback slot with the smallest interval of the original feedback slot of the ACK/NACK to be delayed, wherein the original feedback slot is based on a fixed timing relationship Determined upstream time slot.

In a possible implementation, the transmission module 502 is configured to:

The ACK/NACK to be delayed is sequentially transmitted to the feedback time slot for transmission, so that the number of downlink time slots corresponding to each time slot in the feedback time slot that need to be fed back does not exceed its own set allocation amount, and each of the feedback time slots The time slot has a minimum time interval of the original feedback time slot corresponding to the ACK/NACK to be delayed, wherein the original feedback time slot is an uplink time slot determined according to a fixed timing relationship.

In a possible implementation, if a static codebook size is used, the transmission module 502 is configured to:

In a possible implementation, if a dynamic codebook size is used, the transmission module 502 is configured to:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, receiving in the feedback window of any time slot in the corresponding feedback time slot according to the ACK/NACK delay to be delayed The total DAI included in any DCI to determine the size of the feedback codebook of any time slot, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink transmission, the corresponding feedback time slot according to the ACK/NACK delay to be delayed The total DAI contained in the last received DCI in the feedback window of any of the slots in the slot is determined by the feedback codebook size of any slot.

Determining the physics occupied by the ACK/NACK to be transmitted in any slot according to the feedback resource indication ARI included in any DCI received in the feedback window of any slot in the corresponding feedback slot after the ACK/NACK delay to be delayed The uplink control channel PUCCH feeds back the resource location to transmit the ACK/NACK to be transmitted in any time slot on the PUCCH feedback resource location, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot.

If the total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back in the feedback window, according to the feedback window received in any feedback slot of the corresponding feedback time slot after the delayed ACK/NACK delay An ARI included in any DCI, determining a physical uplink control channel PUCCH feedback resource location occupied by an ACK/NACK to be transmitted in any time slot, to transmit an ACK/NACK to be transmitted in any time slot on a PUCCH feedback resource location, where The feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the last received feedback window in any of the corresponding feedback time slots according to the ACK/NACK delay to be delayed is received. The ARI included in one DCI determines the location of the PUCCH feedback resource occupied by the ACK/NACK to be transmitted in any slot to transmit the ACK/NACK to be transmitted in any slot in the PUCCH feedback resource location.

Embodiment 4

Referring to FIG. 6 , based on the same inventive concept, an embodiment of the present application provides an ACK/NACK transmission device, where the device may be the base station in

Embodiments

1 and 2. The device includes at least a determining module 601 and a receiving module 602, wherein:

The determining module 601 is configured to determine, according to the uplink and downlink configuration information and the unindexed physical uplink shared channel PUSCH configuration information, that the terminal needs to transmit the ACK/NACK in the unindexed PUSCH uplink time slot according to the fixed timing relationship;

The receiving module 602 is configured to receive, by using a preset rule, other ACK/NACKs that are transmitted in the unindexed PUSCH uplink time slot according to a fixed timing relationship in other uplink time slots in the radio frame.

In a possible implementation, the receiving module 602 is configured to:

In a possible implementation, if a static codebook size is used, the receiving module 602 is configured to:

In a possible implementation, if a dynamic codebook size is used, the receiving module 602 is configured to:

Embodiment 5

Based on the same inventive concept, an embodiment of the present application provides an ACK/NACK transmission device, which may be a UE or a base station as described in

Embodiment

1, 2, 3, or 4. Wherein the device comprises:

At least one processor, and

a memory coupled to the at least one processor;

Wherein the memory stores instructions executable by the at least one processor, the at least one processor performing the method as described in the first embodiment and/or the second embodiment by executing the instructions stored in the memory.

In a specific implementation process, the at least one processor performs a specific process of the method as described in Embodiment 1 and/or Embodiment 2 by executing the instruction stored in the memory, and may include controlling other ones in the device. A component, for example, controls a transceiver in the device for data transceiving.

Embodiment 6

Based on the same inventive concept, an embodiment of the present application provides a computer readable storage medium, wherein:

The computer readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the methods as described in the first embodiment and/or the second embodiment.

In a specific implementation process, the computer readable storage medium includes: USB (Universal Serial Bus flash drive), mobile hard disk, ROM (Read-Only Memory), RAM (Random Access Memory) A storage medium that can store program codes, such as a random access memory, a magnetic disk, or an optical disk.

One or more technical solutions in the above technical solutions have the following technical effects or advantages:

Further, in the embodiment of the present application, a new HARQ feedback timing, a feedback codebook, and a method for determining a feedback resource are provided, which avoids that HARQ-ACK feedback and unindexed PUSCH transmission occur at the same time, thereby improving system transmission performance.

The device embodiments described above are merely illustrative, wherein the units/modules described as separate components may or may not be physically separate, and the components displayed as units/modules may or may not be physical units/modules. , can be located in one place, or can be distributed to multiple network units/modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without deliberate labor.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for determining an acknowledgement/negative acknowledgement ACK/NACK transmission, comprising:

Using a fixed timing relationship to determine an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot that needs to be fed back;

If the unframed PUSCH uplink time slot for transmitting the unindexed physical uplink shared channel PUSCH resource is configured in the radio frame, the ACK/NACK transmitted in the unindexed PUSCH uplink time slot is required according to the fixed timing relationship, The preset rule is delayed to other uplink time slot transmissions in the radio frame;

The unindexed PUSCH is a PUSCH that is not controlled by the downlink control information DCI, or a PUSCH that is controlled by a DCI that does not include a downlink allocation index DAI; and the other uplink time slots are the non-indexed in the radio frame. Uplink time slot outside the PUSCH uplink time slot.
The method according to claim 1, wherein an ACK/NACK required to be transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship is delayed to a rest in the radio frame by a preset rule Uplink time slot transmission, including:

Determining, according to the uplink and downlink configuration information received in advance, all uplink time slots in the radio frame, and determining, according to the unindexed PUSCH configuration information received in advance, the unindexed PUSCH uplink time slot;

Determining, among all uplink time slots in the radio frame, a time slot other than the unindexed PUSCH uplink time slot is a feedback time slot that can be used for transmitting ACK/NACK;

Delaying the ACK/NACK to be delayed to the feedback slot transmission by the preset rule, wherein the ACK/NACK to be delayed needs to be uplinked on the unindexed PUSCH according to the fixed timing relationship ACK/NACK for slot transmission.
The method according to claim 2, wherein delaying the ACK/NACK to be delayed by the preset rule to the feedback time slot transmission comprises:

Delaying the ACK/NACK to be delayed, all transmitted to the latest feedback time slot in the feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed, wherein the original feedback The time slot is an uplink time slot determined according to the fixed timing relationship.
The method according to claim 2, wherein delaying the ACK/NACK to be delayed by the preset rule to the feedback time slot transmission comprises:

Determining, in the feedback slot, a manner of equally allocating downlink time slots in the radio frame that need to be fed back according to the number of the feedback time slots and the number of downlink time slots that need to be fed back in the radio frame. The number of downlink time slots that need to be fed back in each time slot is respectively obtained to obtain a set allocation quantity of each time slot in the feedback time slot;

Delaying the ACK/NACK to be delayed into the feedback time slot for transmission, so that the number of downlink time slots corresponding to each time slot in the feedback time slot that need to be fed back does not exceed the set allocation of itself. The quantity, and each time slot in the feedback time slot has a minimum time interval of the original feedback time slot corresponding to the ACK/NACK to be delayed, wherein the original feedback time slot is an uplink determined according to the fixed timing relationship. Time slot.
The method according to any one of claims 2-4, wherein if a static codebook size is used, the ACK/NACK to be delayed is delayed to the feedback time slot transmission by the preset rule. include:

Determining a feedback codebook size of any one of the feedback time slots as a codebook size of any one of the feedback time slots before delay and an original feedback of ACK/NACK delayed to any one of the feedback time slots The sum of the codebook sizes of the slots.
The method according to any one of claims 2-4, wherein if the dynamic codebook size is used, the ACK/NACK to be delayed is delayed to the feedback time slot transmission by the preset rule. include:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to any one of the feedback time slots corresponding to the delayed ACK/NACK delay The total DAI included in any DCI received in the feedback window determines the size of the feedback codebook of any one of the time slots, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink, the corresponding ACK/NACK delay is required according to the delay. The total DAI included in a DCI received in the feedback window of any time slot in the feedback time slot is determined, and the feedback codebook size of the any time slot is determined.
The method according to any one of claims 2-4, wherein if a static codebook size is used, the ACK/NACK to be delayed is delayed to the feedback time slot transmission by the preset rule. include:

Determining, according to the feedback resource indication ARI included in any DCI received in the feedback window of any one of the feedback slots that are delayed after the ACK/NACK delay, determining whether to be transmitted in any one of the slots The physical uplink control channel PUCCH of the ACK/NACK is used to feed back the resource location to transmit the ACK/NACK to be transmitted in the any slot in the PUCCH feedback resource location, where the feedback window includes the need to perform in the same uplink time slot. All downlink time slots fed back.
The method according to any one of claims 2-4, wherein if the dynamic codebook size is used, the ACK/NACK to be delayed is delayed to the feedback time slot transmission by the preset rule. include:

If the total DAI in the DCI indicates the number of downlink slots that need to be fed back in the feedback window, the feedback window of any one of the feedback slots corresponding to the ACK/NACK delay after the delay is required. Determining an ARI included in any DCI, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be transmitted in any one of the slots, to transmit the any slot on the PUCCH feedback resource location ACK/NACK to be transmitted, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the feedback window of any one of the feedback time slots corresponding to the delayed ACK/NACK delay is used. The ARI included in the last received DCI, determining the location of the PUCCH feedback resource occupied by the ACK/NACK to be transmitted in any one of the slots, to transmit the to-be-transmitted in any of the slots in the PUCCH feedback resource location ACK/NACK.
A method for determining an acknowledgement/negative acknowledgement ACK/NACK transmission, comprising:

Determining, according to the uplink and downlink configuration information and the unindexed physical uplink shared channel PUSCH configuration information, that the terminal needs to transmit the ACK/NACK in the unindexed PUSCH uplink time slot according to the fixed timing relationship;

Receiving, in a preset rule, the ACK/NACK transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship in the other uplink time slots in the radio frame;

The unindexed PUSCH is a PUSCH that is not controlled by the downlink control information DCI, or a PUSCH that is controlled by a DCI that does not include a downlink allocation index DAI; and the other uplink time slots are the non-indexed in the radio frame. Uplink time slot outside the PUSCH uplink time slot.
The method according to claim 9, wherein in the other uplink time slots in the radio frame with a preset rule, the uplink time slot in the unindexed PUSCH is required according to the fixed timing relationship after receiving the delay. The transmitted ACK/NACK includes:

Determining, among all uplink time slots in the radio frame, a time slot other than the unindexed PUSCH uplink time slot is a feedback time slot that can be used for transmitting ACK/NACK;

Receiving, in the feedback time slot, the ACK/NACK delayed to the feedback time slot transmission by using the preset rule, wherein the ACK/NACK to be delayed is required according to the fixed timing relationship The ACK/NACK of the unindexed PUSCH uplink time slot transmission.
The method according to claim 10, wherein receiving, in the feedback time slot, the ACK/NACK delayed to the feedback time slot transmission by the preset rule includes:

Receiving, in the feedback time slot, the most recent feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed, receiving the ACK/NACK required to be delayed, wherein the original feedback time slot An upstream time slot determined according to the fixed timing relationship.
The method according to claim 10, wherein receiving, in the feedback time slot, the ACK/NACK delayed to the feedback time slot transmission by the preset rule includes:

Determining, in the feedback slot, a manner of equally allocating downlink time slots in the radio frame that need to be fed back according to the number of the feedback time slots and the number of downlink time slots that need to be fed back in the radio frame. The number of downlink time slots that need to be fed back in each time slot is respectively obtained to obtain a set allocation quantity of each time slot in the feedback time slot;

And receiving, in each of the time slots in the feedback time slot, an ACK/NACK corresponding to a maximum time interval between the original feedback time slot and the feedback time slot in the ACK/NACK to be delayed, where the time slot is received in each time slot. The number of ACK/NACKs does not exceed the set allocation number of each time slot itself, and the original feedback time slot is an uplink time slot determined according to the fixed timing relationship.
The method according to any one of claims 10-12, wherein if a static codebook size is used, a delay is received in the feedback time slot with the preset rule to transmit to the feedback time slot. Delayed ACK/NACK, including:

Determining a feedback codebook size of any one of the feedback time slots as a codebook size of any one of the feedback time slots before delay and an original feedback of ACK/NACK delayed to any one of the feedback time slots The sum of the codebook sizes of the slots.
The method according to any one of claims 10-12, wherein if a dynamic codebook size is used, a delay is received in the feedback time slot with the preset rule to transmit to the feedback time slot. Delayed ACK/NACK, including:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to any one of the feedback time slots corresponding to the delayed ACK/NACK delay Determining, by the total DAI included in any DCI in the feedback window, a feedback codebook size of any one of the time slots, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink, the corresponding ACK/NACK delay is required according to the delay. The total DAI included in one of the last transmitted DCIs in the feedback window of any time slot in the feedback time slot determines the size of the feedback codebook of the any time slot.
The method according to any one of claims 10-12, wherein if a static codebook size is used, a delay is received in the feedback time slot with the preset rule to transmit to the feedback time slot. Delayed ACK/NACK, including:

Determining an ACK to be transmitted in any one of the slots according to the feedback resource indication ARI included in any DCI sent in the feedback window of any one of the feedback slots that is delayed after the ACK/NACK delay is to be delayed. The physical uplink control channel PUCCH of the /NACK is used to feed back the resource location to receive the ACK/NACK to be received in the any slot in the PUCCH feedback resource location, where the feedback window includes feedback in the same uplink slot. All downstream time slots.
The method according to any one of claims 10-12, wherein if a dynamic codebook size is used, a delay is received in the feedback time slot with the preset rule to transmit to the feedback time slot. Delayed ACK/NACK, including:

If the total DAI in the DCI indicates the number of downlink slots that need to be fed back in the feedback window, the feedback window of any one of the feedback slots corresponding to the ACK/NACK delay after the delay is required. An ARI included in any DCI transmitted, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be received in any one of the slots, to receive the any slot in the PUCCH feedback resource location ACK/NACK to be received, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the feedback window of any one of the feedback time slots corresponding to the delayed ACK/NACK delay is used. The ARI included in the last DCI transmitted, determines the PUCCH feedback resource location occupied by the ACK/NACK to be received in any one of the slots, to receive the ACK to be received in the any slot in the PUCCH feedback resource location /NACK.
A ACK/NACK transmission device for determining an acknowledgment/negative acknowledgment, comprising:

a determining module, configured to determine, by using a fixed timing relationship, an uplink time slot occupied by an ACK/NACK corresponding to a downlink time slot that needs to be fed back;

a transmission module, configured to: if an unindexed PUSCH uplink time slot for transmitting an unindexed physical uplink shared channel PUSCH resource is configured in a radio frame, to be transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship ACK/NACK, delayed by a preset rule to other uplink time slots in the radio frame;

The unindexed PUSCH is a PUSCH that is not controlled by the downlink control information DCI, or a PUSCH that is controlled by a DCI that does not include a downlink allocation index DAI; and the other uplink time slots are the non-indexed in the radio frame. Uplink time slot outside the PUSCH uplink time slot.
The device of claim 17 wherein said transmission module is for:

Determining, according to the uplink and downlink configuration information received in advance, all uplink time slots in the radio frame, and determining, according to the unindexed PUSCH configuration information received in advance, the unindexed PUSCH uplink time slot;

Determining, among all uplink time slots in the radio frame, a time slot other than the unindexed PUSCH uplink time slot is a feedback time slot that can be used for transmitting ACK/NACK;

Delaying the ACK/NACK to be delayed to the feedback slot transmission by the preset rule, wherein the ACK/NACK to be delayed needs to be uplinked on the unindexed PUSCH according to the fixed timing relationship ACK/NACK for slot transmission.
The device according to claim 18, wherein said transmission module is configured to:

Delaying the ACK/NACK to be delayed, all transmitted to the latest feedback time slot in the feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed, wherein the original feedback The time slot is an uplink time slot determined according to the fixed timing relationship.
The device according to claim 18, wherein said transmission module is configured to:

Determining, in the feedback slot, a manner of equally allocating downlink time slots in the radio frame that need to be fed back according to the number of the feedback time slots and the number of downlink time slots that need to be fed back in the radio frame. The number of downlink time slots that need to be fed back in each time slot is respectively obtained to obtain a set allocation quantity of each time slot in the feedback time slot;

Delaying the ACK/NACK to be delayed into the feedback time slot for transmission, so that the number of downlink time slots corresponding to each time slot in the feedback time slot that need to be fed back does not exceed the set allocation of itself. The quantity, and each time slot in the feedback time slot has a minimum time interval of the original feedback time slot corresponding to the ACK/NACK to be delayed, wherein the original feedback time slot is an uplink determined according to the fixed timing relationship. Time slot.
The device according to any one of claims 18 to 20, wherein if a static codebook size is used, the transmission module is configured to:

Determining a feedback codebook size of any one of the feedback time slots as a codebook size of any one of the feedback time slots before delay and an original feedback of ACK/NACK delayed to any one of the feedback time slots The sum of the codebook sizes of the slots.
The device according to any one of claims 18 to 20, wherein if a dynamic codebook size is used, the transmission module is configured to:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to any one of the feedback time slots corresponding to the delayed ACK/NACK delay The total DAI included in any DCI received in the feedback window determines the size of the feedback codebook of any one of the time slots, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink, the corresponding ACK/NACK delay is required according to the delay. The total DAI included in a DCI received in the feedback window of any time slot in the feedback time slot is determined, and the feedback codebook size of the any time slot is determined.
The device according to any one of claims 18 to 20, wherein if a static codebook size is used, the transmission module is configured to:

Determining, according to the feedback resource indication ARI included in any DCI received in the feedback window of any one of the feedback slots that are delayed after the ACK/NACK delay, determining whether to be transmitted in any one of the slots The physical uplink control channel PUCCH of the ACK/NACK is used to feed back the resource location to transmit the ACK/NACK to be transmitted in the any slot in the PUCCH feedback resource location, where the feedback window includes the need to perform in the same uplink time slot. All downlink time slots fed back.
The device according to any one of claims 18 to 20, wherein if a dynamic codebook size is used, the transmission module is configured to:

If the total DAI in the DCI indicates the number of downlink slots that need to be fed back in the feedback window, the feedback window of any one of the feedback slots corresponding to the ACK/NACK delay after the delay is required. Determining an ARI included in any DCI, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be transmitted in any one of the slots, to transmit the any slot on the PUCCH feedback resource location ACK/NACK to be transmitted, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the feedback window of any one of the feedback time slots corresponding to the delayed ACK/NACK delay is used. The ARI included in the last received DCI, determining the location of the PUCCH feedback resource occupied by the ACK/NACK to be transmitted in any one of the slots, to transmit the to-be-transmitted in any of the slots in the PUCCH feedback resource location ACK/NACK.
A ACK/NACK transmission device for determining an acknowledgment/negative acknowledgment, comprising:

a determining module, configured to determine, according to the uplink and downlink configuration information and the unindexed physical uplink shared channel PUSCH configuration information, that the terminal needs to transmit an ACK/NACK in the unindexed PUSCH uplink time slot according to a fixed timing relationship;

a receiving module, configured to receive, by using a preset rule, an ACK/NACK that is transmitted in the unindexed PUSCH uplink time slot according to the fixed timing relationship in other uplink time slots in the radio frame;

The unindexed PUSCH is a PUSCH that is not controlled by the downlink control information DCI, or a PUSCH that is controlled by a DCI that does not include a downlink allocation index DAI; and the other uplink time slots are the non-indexed in the radio frame. Uplink time slot outside the PUSCH uplink time slot.
The device according to claim 25, wherein said receiving module is configured to:

Determining, among all uplink time slots in the radio frame, a time slot other than the unindexed PUSCH uplink time slot is a feedback time slot that can be used for transmitting ACK/NACK;

Receiving, in the feedback time slot, the ACK/NACK delayed to the feedback time slot transmission by using the preset rule, wherein the ACK/NACK to be delayed is required according to the fixed timing relationship The ACK/NACK of the unindexed PUSCH uplink time slot transmission.
The device according to claim 26, wherein said receiving module is configured to:

Receiving, in the feedback time slot, the most recent feedback time slot with the smallest time interval of the original feedback time slot of the ACK/NACK to be delayed, receiving the ACK/NACK required to be delayed, wherein the original feedback time slot An upstream time slot determined according to the fixed timing relationship.
The device according to claim 26, wherein said receiving module is configured to:

Determining, in the feedback slot, a manner of equally allocating downlink time slots in the radio frame that need to be fed back according to the number of the feedback time slots and the number of downlink time slots that need to be fed back in the radio frame. The number of downlink time slots that need to be fed back in each time slot is respectively obtained to obtain a set allocation quantity of each time slot in the feedback time slot;

And receiving, in each of the time slots in the feedback time slot, an ACK/NACK corresponding to a maximum time interval between the original feedback time slot and the feedback time slot in the ACK/NACK to be delayed, where the time slot is received in each time slot. The number of ACK/NACKs does not exceed the set allocation number of each time slot itself, and the original feedback time slot is an uplink time slot determined according to the fixed timing relationship.
The device according to any one of claims 26-28, wherein if a static codebook size is used, the receiving module is configured to:

Determining a feedback codebook size of any one of the feedback time slots as a codebook size of any one of the feedback time slots before delay and an original feedback of ACK/NACK delayed to any one of the feedback time slots The sum of the codebook sizes of the slots.
The device according to any one of claims 26-28, wherein if a dynamic codebook size is used, the receiving module is configured to:

If the total downlink allocation index total DAI in the DCI indicates the number of downlink time slots in the feedback window that need to be fed back, according to any one of the feedback time slots corresponding to the delayed ACK/NACK delay Determining, by the total DAI included in any DCI in the feedback window, a feedback codebook size of any one of the time slots, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back by the base station in the feedback window when the downlink time slot of the DCI is downlink, the corresponding ACK/NACK delay is required according to the delay. The total DAI included in one of the last transmitted DCIs in the feedback window of any time slot in the feedback time slot determines the size of the feedback codebook of the any time slot.
The device according to any one of claims 26-28, wherein if a static codebook size is used, the receiving module is configured to:

Determining an ACK to be transmitted in any one of the slots according to the feedback resource indication ARI included in any DCI sent in the feedback window of any one of the feedback slots that is delayed after the ACK/NACK delay is to be delayed. The physical uplink control channel PUCCH of the /NACK is used to feed back the resource location to receive the ACK/NACK to be received in the any slot in the PUCCH feedback resource location, where the feedback window includes feedback in the same uplink slot. All downstream time slots.
The device according to any one of claims 26-28, wherein if a dynamic codebook size is used, the receiving module is configured to:

If the total DAI in the DCI indicates the number of downlink slots that need to be fed back in the feedback window, the feedback window of any one of the feedback slots corresponding to the ACK/NACK delay after the delay is required. An ARI included in any DCI transmitted, determining a physical uplink control channel PUCCH feedback resource location occupied by the ACK/NACK to be received in any one of the slots, to receive the any slot in the PUCCH feedback resource location ACK/NACK to be received, wherein the feedback window includes all downlink time slots that need to be fed back in the same uplink time slot;

If the total DAI in the DCI indicates the number of downlink time slots that need to be fed back in the feedback window, the feedback window of any one of the feedback time slots corresponding to the delayed ACK/NACK delay is used. The ARI included in the last DCI transmitted, determines the PUCCH feedback resource location occupied by the ACK/NACK to be received in any one of the slots, to receive the ACK to be received in the any slot in the PUCCH feedback resource location /NACK.
An ACK/NACK transmission device, characterized in that the device comprises:

At least one processor, and

a memory coupled to the at least one processor;

Wherein the memory stores instructions executable by the at least one processor, the at least one processor performing the method of any one of claims 1-16 by executing the instructions stored by the memory.
A computer readable storage medium characterized by:

The computer readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-16.