CN110708146B

CN110708146B - HARQ-ACK information feedback method and device

Info

Publication number: CN110708146B
Application number: CN201911157682.6A
Authority: CN
Inventors: 周欢
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2022-06-21
Anticipated expiration: 2039-11-22
Also published as: CN110708146A

Abstract

The embodiment of the application provides a method and a device for feeding back HARQ-ACK information, wherein the method comprises the following steps: first control information sent by a network device is received, wherein the first control information comprises priority information. And sending a HARQ-ACK feedback codebook to the network equipment according to the priority information, wherein the HARQ-ACK feedback codebook comprises HARQ-ACK information corresponding to the PDSCH with high priority and/or HARQ-ACK information corresponding to the PDSCH with low priority, and the PDSCH is the PDSCH corresponding to the first control information. The priority information is set in the first control information, so that the HARQ-ACK information of the PDSCH with high priority and the HARQ-ACK information with low priority are distinguished, and the feedback information of the high priority service and the low priority service is effectively distinguished in the unlicensed spectrum.

Description

HARQ-ACK information feedback method and device

Technical Field

The embodiment of the invention relates to the communication technology, in particular to a method and a device for feeding back HARQ-ACK information.

Background

High-reliability Low-Latency (URLLC) service is supported in a 5G NR Communication system.

The main technology for realizing low delay of the 5G URLLC service comprises the following steps: introducing smaller time resource units; the uplink access adopts a mechanism without scheduling permission, and the terminal can directly access a channel; an asynchronous process is supported to save uplink time synchronization overhead; by using fast automatic repeat request (HARQ) and fast dynamic scheduling, etc., to implement fast feedback of high-priority downlink traffic, the gNB may configure or indicate its transmission priority, such as high-priority or low-priority traffic.

At present, research on how to deploy NR networks on unlicensed spectrum has been carried out, however, when URLLR traffic is transmitted in an unlicensed frequency band, there is no effective solution for distinguishing high-level traffic from low-level traffic.

Disclosure of Invention

The embodiment of the invention provides a HARQ-ACK information feedback method and device, aiming at solving the problem that high-level services and low-level services cannot be distinguished in transmission in an unauthorized frequency band.

In a first aspect, an embodiment of the present invention provides a HARQ-ACK information feedback method, including:

receiving first control information sent by network equipment, wherein the first control information comprises priority information;

and sending a hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback codebook to the network equipment according to the priority information, wherein the HARQ-ACK feedback codebook comprises HARQ-ACK information corresponding to a Physical Downlink Shared Channel (PDSCH) with high priority and/or HARQ-ACK information corresponding to a PDSCH with low priority, and the PDSCH is the PDSCH corresponding to the first control information.

In one possible design, the PDSCH may be used to transmit first data sent by the network device, and the HARQ-ACK information may be used to indicate whether the first data is correctly received;

and the channel for sending the HARQ-ACK feedback codebook is positioned in an unauthorized cell.

In one possible design, the first control information includes a first group identification, first priority information, a first new feedback group indication NFI, a first downlink assignment index DAI;

the first group identifier is used for indicating a first PDSCH group corresponding to a currently scheduled first PDSCH, the first priority information is used for indicating the priority of the first PDSCH, the first NFI is used for indicating whether the first PDSCH group is a new group, and the first DAI is used for indicating the indication of the number of data allocations of the first PDSCH group.

In one possible design, if the first NFI indicates that the first PDSCH group is not a new group and the first priority information indicates that the priority of the first PDSCH is a first priority, the HARQ-ACK feedback codebook includes HARQ-ACK information before a current time unit and first HARQ-ACK information, where the first HARQ-ACK information is HARQ-ACK information corresponding to a first PDSCH of the first priority determined according to the first DAI.

In one possible design, if the first NFI indicates that the first PDSCH group is a new group and the first priority information indicates that the priority of the first PDSCH is a first priority, the method further includes:

and discarding second HARQ-ACK information before the current time unit according to the first control information, wherein the group identifier of a PDSCH group corresponding to the second HARQ-ACK information is the same as the first group identifier, and the priority of the PDSCH corresponding to the second HARQ-ACK information is the first priority.

In one possible design, the first control information further includes a second group identity, a second NFI, a second DAI;

the second group identifier is used to indicate a second PDSCH group corresponding to a second PDSCH that is not currently scheduled, the first priority information is also used to indicate a priority of the second PDSCH, the second NFI is used to indicate whether the second PDSCH group is a new group, and the second DAI is used to indicate an indication of a number of data allocations of the second PDSCH group.

In one possible design, if the second NFI indicates that the second PDSCH group is not a new group and the first priority information indicates that the priority of the second PDSCH is the first priority, the HARQ-ACK information includes HARQ-ACK information before the current time unit and first HARQ-ACK information and third HARQ-ACK information, where the third HARQ-ACK information is HARQ-ACK information corresponding to the second PDSCH of the first priority determined according to the second DAI.

In one possible design, if the second NFI indicates that the second PDSCH group is a new group and the first priority information indicates that the priority of the second PDSCH group is a first priority, the method further includes:

and discarding fourth HARQ-ACK information before the current time unit according to the first control information, wherein the group identifier of the PDSCH group corresponding to the fourth HARQ-ACK information is the same as the second group identifier, and the priority of the PDSCH corresponding to the fourth HARQ-ACK information is the first priority.

In one possible design, the first priority is a high priority or a low priority.

In one possible design, the first control information further includes second priority information;

wherein the second priority information is used to indicate a priority of the second PDSCH.

In one possible design, if the second NFI indicates that the second PDSCH group is not a new group and the second priority information indicates that the priority of the second PDSCH is a second priority, the HARQ-ACK information includes HARQ-ACK information before a current time unit and first HARQ-ACK information and fourth HARQ-ACK information, where the fourth HARQ-ACK information is HARQ-ACK information corresponding to the second PDSCH of the second priority determined according to the second DAI.

In one possible design, if the second NFI indicates that the second PDSCH group is a new group and the second priority information indicates that the priority of the second PDSCH group is a second priority, the method further includes:

and according to the first control information, discarding fifth HARQ-ACK information before the current time unit, wherein the group identifier of the PDSCH group corresponding to the fifth HARQ-ACK information is the same as the second group identifier, and the priority of the PDSCH corresponding to the fifth HARQ-ACK information is the second priority.

In one possible design, the second priority is a high priority or a low priority.

In one possible design, the first control information further includes first indication information K1, where the K1 is used to indicate a time unit for transmitting HARQ-ACK information corresponding to the currently scheduled first PDSCH.

In one possible design, if K1 is a non-numerical value, determining second indication information K2 included in second control information as the numerical value corresponding to K1, where the time unit corresponding to the second control information is later than the time unit corresponding to the first control information, K2 is a numerical value, the second control information includes third priority information, and the third priority information in the second control information is the same as the first priority information in the first control information.

In one possible design, the second control information further includes a third group identifier, where the third group identifier is used to indicate a PDSCH group corresponding to a currently scheduled PDSCH;

the third group identification is the same as the first group identification.

In one possible design, the method further includes:

and if the priority information in the first control information is high priority, setting HARQ-ACK information except the HARQ-ACK information corresponding to the PASCH with the high priority as Negative Acknowledgement (NACK).

In a second aspect, an embodiment of the present invention provides an HARQ-ACK information feedback apparatus, including:

the device comprises a receiving module, a judging module and a sending module, wherein the receiving module is used for receiving first control information sent by network equipment, and the first control information comprises priority information;

and a sending module, configured to send a hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback codebook to a network device according to the priority information, where the HARQ-ACK feedback codebook includes HARQ-ACK information corresponding to a high-priority Physical Downlink Shared Channel (PDSCH) and/or HARQ-ACK information of a low-priority PDSCH, and the PDSCH is the PDSCH corresponding to the first control information.

the first group identifier is used to indicate a first PDSCH group corresponding to a currently scheduled first PDSCH, the first priority information is used to indicate a priority of the first PDSCH, the first NFI is used to indicate whether the first PDSCH group is a new group, and the first DAI is used to indicate an indication of a data allocation number of the first PDSCH group.

In one possible design, if the first NFI indicates that the first PDSCH group is a new group and the first priority information indicates that the priority of the first PDSCH is a first priority, the apparatus further includes: a discarding module;

the discarding module is configured to discard second HARQ-ACK information before a current time unit according to the first control information, where a group identifier of a PDSCH group corresponding to the second HARQ-ACK information is the same as the first group identifier, and a priority of a PDSCH corresponding to the second HARQ-ACK information is a first priority.

In one possible design, if the second NFI indicates that the second PDSCH group is a new group and the first priority information indicates that the priority of the second PDSCH group is a first priority, the discarding module is further configured to:

In one possible design, if the second NFI indicates that the second PDSCH group is a new group and the second priority information indicates that the priority of the second PDSCH group is a second priority, the discarding module is further configured to:

the third group identification is the same as the first group identification.

In one possible design, the sending module is further configured to:

In a third aspect, an embodiment of the present invention provides a HARQ-ACK information feedback device, including:

a memory for storing a program;

a processor for executing the program stored by the memory, the processor being adapted to perform the method of the first aspect as well as any of the various possible designs of the first aspect, when the program is executed.

In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to perform the method as described above in the first aspect and any one of various possible designs of the first aspect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a system diagram of a HARQ-ACK information feedback method according to an embodiment of the present application;

fig. 2 is a first schematic diagram of data transmission according to an embodiment of the present application;

fig. 3 is a second schematic diagram of data transmission according to an embodiment of the present application;

fig. 4 is a flowchart of a HARQ-ACK information feedback method according to an embodiment of the present application;

fig. 5 is a first schematic diagram of a HARQ-ACK feedback codebook provided in an embodiment of the present application;

fig. 6 is a schematic diagram of a HARQ-ACK feedback codebook provided in the embodiment of the present application;

fig. 7 is a first schematic structural diagram of a HARQ-ACK information feedback apparatus according to an embodiment of the present invention;

fig. 8 is a structural diagram of a HARQ-ACK information feedback apparatus according to a second embodiment of the present invention;

fig. 9 is a schematic diagram of a hardware structure of a HARQ-ACK information feedback device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First, a system architecture applied by the HARQ-ACK information feedback method provided by the present application is briefly described with reference to fig. 1, where fig. 1 is a system schematic diagram of the HARQ-ACK information feedback method provided by the embodiment of the present application, and is shown in fig. 1:

including network device 101, user equipment 102.

The network device 101 is a device having a wireless transceiving function. Including but not limited to: an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE), a base station (gnnodeb or gNB) or a transmission point (TRP) in a New Radio (NR) system, a base station in a subsequent evolved system, an access Node in a wireless fidelity (WiFi) system, a wireless relay Node, a wireless backhaul Node, and the like. The base station may be: macro base stations, micro base stations, pico base stations, small stations, relay stations, or balloon stations, etc. Multiple base stations may support the same technology network as mentioned above, or different technologies networks as mentioned above. The base station may contain one or more co-sited or non co-sited TRPs. The network device may also be a wireless controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in a Cloud Radio Access Network (CRAN) scenario. The network device may also be a server, a wearable device, or a vehicle mounted device, etc. The following description will take a network device as an example of a base station. The multiple network devices may be base stations of the same type or different types. The base station may communicate with the terminal, or may communicate with the terminal through the relay station. The terminal may communicate with multiple base stations of different technologies, for example, the terminal may communicate with a base station supporting an LTE network, may communicate with a base station supporting a 5G network, may support dual connectivity with a base station of an LTE network and a base station of a 5G network, may support dual connectivity with a base station of a 5G network, and the like.

A User Equipment (UE) 102 is a device with a radio transceiving function. User devices may be deployed on land, including indoors or outdoors, hand-held, worn, or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The user equipment may be a mobile phone (mobile phone), a tablet personal computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) user equipment, an Augmented Reality (AR) user equipment, a wireless terminal in industrial control (industrial control), a vehicle-mounted user equipment, a wireless terminal in self driving (self driving), a wireless user equipment in remote medical (remote medical), a wireless user equipment in smart grid (smart grid), a wireless user equipment in transportation safety (transportation safety), a wireless user equipment in smart city (smart city), a wireless user equipment in smart home (smart home), a wearable user equipment, and the like. The user equipment according to the embodiments of the present application may also be referred to as a terminal, a User Equipment (UE), an access user equipment, a vehicle-mounted terminal, an industrial control terminal, a UE unit, a UE station, a mobile station, a remote user equipment, a mobile device, a UE user equipment, a wireless communication device, a UE agent, or a UE device. The user equipment may also be fixed or mobile.

It should be noted that The technical solution shown in The present application can be applied to The 5th Generation mobile communication technology (5G for short) system, and can also be applied to Long Term Evolution (LTE) system, for example, a vehicle to all (V2X) system, a device to device (D2D) system, a Machine Type Communication (MTC) system, etc. in the LTE communication system, may also be applied to a Universal Mobile Telecommunications System (UMTS) terrestrial radio access network (UTRAN) system, or a radio access network (GERAN) architecture of a global system for mobile communication (GSM)/enhanced data rate for GSM evolution (EDGE) system. The technical solution shown in the present application may also be applied to other communication systems, for example, an evolution communication system of a 5G system, and the like, which is not limited in the present application as long as the communication system includes a network device and a user equipment, where the network device and the user equipment may perform information interaction through a wireless signal.

Specifically, in a wireless communication system, such as a New Radio (NR) communication system, information exchanged between a user equipment and a network device is carried through a physical channel. Data sent by the ue, that is, uplink data, is usually carried through a Physical Uplink Shared Channel (PUSCH); control information, i.e., uplink control information, transmitted by the ue is usually carried through a Physical Uplink Control Channel (PUCCH). In addition, the ue may also send a Sounding Reference Signal (SRS), and the network device may estimate channel qualities of the ue on different frequencies by receiving the SRS of the ue. Accordingly, the data transmitted by the network device to the user equipment may be referred to as downlink data.

Referring to fig. 1, a network device 101 and a user device 102 may form a communication system, in which the user device 102 may send uplink data to the network device 101, and the network device 101 may send downlink data to the user device 102. It is understood that the specific number of the network devices 101 and the user devices 102 may be determined according to actual situations, and is only an exemplary illustration in fig. 1.

It should be noted that the network architecture described in the present application is for more clearly illustrating the technical solution of the present application, and does not constitute a limitation to the technical solution provided in the present application, and as a person having ordinary skill in the art knows, along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the present application is also applicable to similar technical problems.

On the basis of the system described above, the following is a brief description of the related art background to which this application relates:

high-reliability low-latency (URLLC) service is supported in a 5G NR Communication system. Specifically, the 5G URLLC technology realizes a user plane delay of 0.5 ms for both uplink and downlink between the network device and the UE, where the user plane delay refers to: the time taken to successfully deliver an application layer Internet Protocol (IP) packet/message, specifically from the sender 5G radio Protocol layer entry point, via 5G radio transmission, to the receiver 5G radio Protocol layer exit point.

The delay comes from both uplink and downlink directions, and the main techniques for implementing low delay by 5G URLLC include: introducing smaller time resource units, such as a mini-slot (mini-slot); the uplink access adopts a mechanism without scheduling permission, and the terminal can directly access a channel; an asynchronous process is supported to save uplink time synchronization overhead; hybrid Automatic Repeat reQuest (HARQ) and fast dynamic scheduling are adopted.

For HARQ feedback information, in order to implement fast feedback of a high-priority downlink service, the gNB may configure or indicate a priority of transmission of feedback information corresponding to the downlink service, for example, configure the feedback information of the high-priority service or the feedback information of the low-priority service.

However, the feedback information of the high-priority service and the low-priority service is for the licensed spectrum, and at present, the 3rd Generation Partnership Project (3 GPP) standard organization has studied how to deploy the NR network on the unlicensed spectrum, so as to achieve the purposes of fairly and effectively utilizing the unlicensed spectrum and improving the data transmission rate of the NR system.

Here, first, a licensed spectrum (licensed spectrum) and an unlicensed spectrum (unlicensed spectrum) are introduced:

for a commercial mobile communication system, an operator needs to auction authorized spectrum, and can use the corresponding spectrum to perform mobile communication operation activities after obtaining authorization. Unlicensed spectrum does not require auctioning and anyone can legally use unlicensed spectrum, such as Wireless Fidelity (WiFi) devices in the 2.4GHz and 5GHz bands. The carriers on the licensed spectrum are referred to as licensed carriers and the carriers on the unlicensed spectrum are referred to as unlicensed carriers. With the development of communication technology, the amount of information transmitted in a wireless communication network is increasing day by day, and the unauthorized spectrum transmission information is preempted, so that the data throughput in the wireless communication network can be improved, and the requirements of users can be better met.

In a Long-Term Evolution-Assisted Access (LAA-LTE) system, data transmission of an unlicensed spectrum requires that a listen-before-talk (LBT) mechanism uses channel resources to reduce the influence on other systems.

Specifically, in the authorized spectrum, the network device may determine the uplink resource occupied by the UE for sending the uplink feedback information to determine the Time of the uplink feedback information, however, in the unlicensed spectrum, because the UE is self-accessed through an LBT mechanism, the network device cannot determine the Time of the uplink feedback, which may cause that a Physical Downlink Shared Channel (PDSCH) and an uplink feedback Channel are in different Continuous occupancy durations (COTs), based on which, an enhanced dynamic codebook feedback scheme is introduced by the NR-U to solve the problem that the PDSCH and the uplink feedback Channel are in different Continuous occupancy durations.

In the 5G URLLC technology, feedback information of a high-priority service and feedback information of a low-priority service can be effectively distinguished for an authorized spectrum to achieve low time delay, and meanwhile, an unlicensed spectrum is used as a very important resource to transmit a spectrum, and the feedback information of the high-priority service and the feedback information of the low-priority service also need to be distinguished, however, at present, there is no effective solution for the distinction of high priority and low priority of uplink feedback information in the unlicensed spectrum.

In view of the above-mentioned problems, the present application provides an HARQ-Acknowledgement Character (ACK) information feedback method to effectively distinguish feedback information of high-level services and low-level services in an unlicensed spectrum.

The relevant concepts referred to in this application are explained first:

HARQ-ACK information:

in order to ensure reliability and transmission efficiency of data transmission of a physical layer, the LTE employs HARQ, that is, transmitted data may correspond to a Transport Block (TB) in the physical layer, and the network device adds a Cyclic Redundancy Check (CRC) to the TB to Check whether the TB is successfully received by the terminal. Further, the TB may be further divided into several Code Blocks (CBs), and the network device may add a corresponding CRC to each CB for checking whether each CB is successfully received. After receiving the data, the terminal tries to decode the received data, and if the CRC of all CBs is successfully checked and the CRC of the TB is successfully checked, 1-bit TB-level ACK information is fed back to the network equipment to indicate that the data is successfully received; if there is a CRC failure of a CB or a CRC failure of the TB, a 1-bit TB-level Negative Acknowledgement (NACK) message is fed back to the network device to indicate a data reception failure. At this point, the network device needs to retransmit the entire TB.

Here, ACK or NACK is referred to as HARQ-ACK information.

HARQ-ACK feedback codebook:

the UE may feed back, to the network device, decoding results (HARQ-ACK Information) of Multiple data transmitted by the network device in Uplink Control Information (UCI), where the Multiple data may be from different downlink time units and/or different codewords under Multiple-Input Multiple-Output (MIMO) and/or different carriers under carrier aggregation, and the decoding result included in the UCI is an HARQ-ACK feedback codebook.

Specifically, 1 UCI may need to feed back HARQ-ACK information of data transmitted in 1 or more downlink time units, and a set of downlink time units fed back is referred to as the HARQ multiplexing window, where the HARQ-ACK feedback codebook is transmitted through the HARQ multiplexing window.

Downlink Assignment Index DAI (Downlink Assignment Index, DAI):

specifically, the transmission of a Physical Downlink Control Channel (PDCCH) is not completely reliable, and the UE may lose some Downlink DCIs, and for TDD, when some Downlink DCIs in the HARQ feedback window are lost, the UE may erroneously feed back an ACK, so that the error rate of HARQ becomes high. In order to avoid such problems, the PDCCH introduces a DAI field to tell the UE how many subframes contain downlink transmissions in the HARQ feedback window, so as to help the UE detect whether downlink DCI is lost, and avoid the situation that some downlink DCI is lost but ACK is fed back, and the DAI can help the UE determine how many bits of ACK/NACK information need to be fed back.

In the case where only 1 carrier is allocated, 1 Downlink Assignment Index (DAI) exists in each DCI, and this DAI may be referred to as a Counter Downlink Assignment Index (C-DAI).

The UE may determine the size of the codebook according to the DCI detected in the HARQ multiplexing window, and in a possible implementation, the UE determines the size of the codebook according to the DAI value of the last detected DCI, so as to arrange HARQ-ACK information to a position corresponding to the DAI value in the DCI.

Referring to fig. 2, C-DAI is introduced, fig. 2 is a schematic diagram of data transmission provided in this embodiment, as shown in fig. 2, the HARQ multiplexing window is 5 time units, where DCI corresponding to each time unit is as shown in fig. 2, and it is assumed that the UE does not detect DCI scheduled by the 3rd time unit, and based on this, it determines that the HARQ-ACK feedback codebook size is 4 bits (because the last detected DAI value is 4), where the 1 st bit is HARQ-ACK information (DAI ═ 1) of data corresponding to DCI1, the 2 nd bit is HARQ-ACK information (DAI ═ 2) of data corresponding to DCI1, and the 4 th bit is HARQ-ACK (DAI ═ 4) of data corresponding to DCI1, and then the 3rd bit is set to NACK (due to the loss of DCI, the UE fails to detect).

For the case that the configuration is greater than 1 carrier, two DAIs (one is C-DAI, and the other is Total Downlink Assignment Index (T-DAI)) exist in each DCI, where the T-DAIs of all carriers over 1 time unit are equal, the T-DAI is described below with reference to fig. 3, and fig. 3 is a second data transmission diagram provided in the embodiment of the present application.

As shown in fig. 3, 5 carriers are configured, the HARQ multiplexing window is 4 time units, a blank lattice indicates no PDSCH transmission (no DCI), the remaining numbered lattices indicate PDSCH transmission (DCI), and the numbers in fig. 3 indicate D (C-DAI, T-DAI).

Only carrier 1 has data scheduling in the 1 st time unit of the HARQ multiplexing window, and then T-DAI is 1 and C-DAI is 1; in the 2 nd time unit of the HARQ multiplexing window, if both carrier 1 and carrier 3 have data transmission, then add the data transmission of the 1 st time unit, where T-DAI is 3, C-DAI is 2 on carrier 1, and C-DAI is 3 on carrier 2; T-DAI and C-DAI for the 3rd and 4 th time units are obtained in turn, as shown in FIG. 3.

Then, the size of the final HARQ-ACK feedback codebook is 6 bits, the HARQ-ACK feedback codebook is 110111, the corresponding PDSCH or TB is in the order of frequency domain first and time domain later, that is, the HARQ-ACK information of the TB corresponding to the DCI with the DAI value D (1, 1) is the 1 st bit, the HARQ-ACK information of the TB corresponding to the DCI with the DAI value D (3, 2) is the 2 nd bit, and so on, note that: the DAI count is counted in frequency domain first and time domain second.

It should be noted that the names of the above T-DAI and C-DAI in specific applications may not be limited to T-DAI and C-DAI, as long as they enable the indexing of the number of time units. In addition, in a specific implementation scheme, the T-DAI and the C-DAI do not need to exist at the same time, only 1 DAI is needed, which is called as DAI, and the method is particularly suitable for application scenarios in which each carrier determines HARQ-ACK information respectively or only 1 carrier is configured.

Time unit:

in this application, a time unit may be a subframe, a transmission time interval (where one transmission time interval is equal to the length of several subframes and/or the sum of several transmission time intervals is equal to the length of one subframe), or may be 1 time domain symbol, multiple time domain symbols, 1 slot (slot), multiple slots, 1 mini-slot (mini-slot), multiple mini-slots, or a combination of a mini-slot and a slot, or a combination of a symbol and a slot, a mini-slot and a slot, or the like, and the number of symbols/the length of each time unit is not limited to be the same. If 1 time unit carries PDSCH, PDCCH, UCI, or the like, the PDSCH, PDCCH, or UCI may not need to fully occupy all time domain symbols and/or frequency domain resources of the time unit.

Based on the above, the following describes in detail the HARQ-ACK information feedback method provided in the present application, with reference to fig. 4, where fig. 4 is a flowchart of the HARQ-ACK information feedback method provided in the embodiment of the present application.

As shown in fig. 4, the method includes:

s401, receiving first control information sent by a network device, wherein the first control information comprises priority information.

In this embodiment, the first Control information sent by the network device may be Downlink Control Information (DCI), or may also be any data used for transmitting Control information and sent through a Physical Downlink Control Channel (PDCCH), and a specific implementation manner of the first Control information is not limited in this embodiment.

The first control information includes priority information, specifically, the priority information is used to indicate a priority of the PDSCH, and in a possible implementation, the priority information may indicate two priorities, namely a high priority and a low priority; or, in another possible implementation manner, the priority information may indicate priorities of 0, 1, 2, …, K, and the like in different degrees, and a specific implementation manner of the priorities may be selected according to actual needs.

S402, sending a HARQ-ACK feedback codebook to the network equipment according to the priority information, wherein the HARQ-ACK feedback codebook comprises HARQ-ACK information corresponding to a PDSCH with a high priority and/or HARQ-ACK information corresponding to a PDSCH with a low priority, and the PDSCH is the PDSCH corresponding to the first control information and located on an unauthorized carrier.

In this embodiment, the first control information may correspond to a PDSCH to indicate that data transmission is currently performed through a certain PDSCH, and in a possible implementation manner, the PDSCH in this embodiment is used for transmitting first data sent by the network device, and according to the above description of the HARQ-ACK feedback information, the HARQ-ACK information is used for indicating whether the first data is correctly received, and then the HARQ-ACK information of each PDSCH jointly forms a HARQ-ACK feedback codebook.

Therefore, the PDSCH in this embodiment is the PDSCH corresponding to the first control information, and the priority information in this embodiment is used to indicate the priority of the PDSCH corresponding to the first control information, so that after determining the HARQ-ACK information corresponding to the PDSCH, the HARQ-ACK feedback codebook may be determined according to the priority information.

In one possible implementation, if the first control information corresponds to only one PDSCH and the priority of the PDSCH is high priority, the HARQ-ACK feedback codebook includes HARQ-ACK information corresponding to the high priority PDSCH.

In another possible implementation manner, if the first control information corresponds to only one PDSCH and the priority of the PDSCH is low priority, the HARQ-ACK feedback codebook includes HARQ-ACK information corresponding to the low priority PDSCH.

In yet another possible implementation manner, if the first control information corresponds to a plurality of PDSCHs, wherein the priority of one part of PDSCHs is high priority and the priority of the other part of PDSCHs is low priority, the HARQ-ACK feedback codebook includes HARQ-ACK information corresponding to the high-priority PDSCH and HARQ-ACK information corresponding to the low-priority PDSCH

In an optional embodiment, if the priority is set to be a priority of multiple degrees, the HARQ-ACK feedback codebook may include HARQ-ACK information corresponding to the PDSCH of any priority.

It should be noted that, in this embodiment, a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH) for transmitting the HARQ-ACK feedback codebook is located in the unlicensed cell, and accordingly, the HARQ-ACK feedback codebook may be transmitted through the unlicensed spectrum, so that the problem that the feedback information of the high priority service and the low priority service cannot be distinguished in the unlicensed spectrum may be correspondingly solved.

The HARQ-ACK information feedback method provided by the embodiment of the application comprises the following steps: first control information sent by a network device is received, wherein the first control information comprises priority information. And sending a HARQ-ACK feedback codebook to the network equipment according to the priority information, wherein the HARQ-ACK feedback codebook comprises HARQ-ACK information corresponding to the PDSCH with high priority and/or HARQ-ACK information corresponding to the PDSCH with low priority, and the PDSCH is the PDSCH corresponding to the first control information. The priority information is set in the first control information, so that the HARQ-ACK information of the PDSCH with high priority and the HARQ-ACK information with low priority are distinguished, and the feedback information of the high priority service and the low priority service is effectively distinguished in the unlicensed spectrum.

On the basis of the above embodiments, several implementation manners of sending the HARQ-ACK feedback codebook to the network device according to the first control information are described below:

in one possible implementation:

the first control information comprises a first group identifier, first priority information, a first new feedback group indication NFI and a first downlink assignment index DAI;

the first group identifier is used for indicating a first PDSCH group corresponding to a currently scheduled first PDSCH, the first priority information is used for indicating the priority of the first PDSCH, the first NFI is used for indicating whether the first PDSCH group is a new group, and the first DAI is used for indicating the indication of the data allocation number of the first PDSCH group.

Specifically, the network device may determine a currently scheduled PDSCH according to the relevant information such as channel quality, and schedule the PDSCH through the first control information to transmit data, where the scheduled PDSCH is the first PDSCH in this embodiment, and the first control information further includes a first group identifier to indicate a first PDSCH group corresponding to the first PDSCH.

Here, the PDSCH group is explained, and in LTE, the PDSCH is currently divided into group 0(Type0) and group 1(Type 1).

Group 0 is assigned by group at the time of assignment. The bitmap sent to the UE indicates which group is used, where the size of a group is related to the number of Resource Blocks (RBs).

Group 1 is a scheme that defines the system bandwidth into several subsets, and indicates the target subset when allocated to a UE, and then indicates that a certain RB or RBs within the target subset are available for use.

The first group identification may be 0 to indicate that the first PDSCH group is group 0; alternatively, the first group identity may be 1 to indicate that the first PDSCH group is group 1.

Alternatively, the first group identifier may also be indication information that has a mapping relationship with group 0 and group 1, for example, may be in a binary implementation form, or may also be a corresponding mapping letter, and the like, which is not limited in this embodiment.

In addition, if there are more PDSCH groups in LTE, for example, there are further group 2, group 3 …, etc., the first group identifier may correspond to group 2, group 3 …, etc., which is not limited in this embodiment.

In this embodiment, the first priority information included in the first control information is used to indicate the priority of the first PDSCH, which may be, for example, high priority/low priority, or may also be different degrees of priorities such as first priority/second priority/third priority, which specifically depends on the implementation form of the priority, and this is not limited here.

In this embodiment, the first New ACK Feedback Group Indicator (NFI) is used to indicate whether the first PDSCH Group is a New Group, specifically, whether the first PDSCH Group is a New Group compared to the PDSCH Group before the current time unit, and if the PDSCH Group before the current time unit is Group 0 and the first PDSCH Group in the current time unit is Group 1, the first NFI indicates that the first PDSCH Group is a New Group; or, assuming that the PDSCH group before the current time unit is group 0 and the first PDSCH group in the current time unit is group 0, the first NFI indicates that the first PDSCH group is not a new group

In this embodiment, the DAI may include only the C-DAI, or may also include both the C-DAI and the T-DAI, which is specifically determined by the number of carriers, and this embodiment is not limited thereto.

On the basis of the content included in the first control information described above:

the first method is as follows:

and if the first NFI indicates that the first PDSCH group is not a new group and the first priority information indicates that the priority of the first PDSCH is the first priority, the HARQ-ACK feedback codebook comprises HARQ-ACK information before the current time unit and the first HARQ-ACK information, wherein the first HARQ-ACK information is the HARQ-ACK information corresponding to the first PDSCH with the first priority determined according to the first DAI.

And if the first priority can be a high priority, the first HARQ-ACK information is HARQ-ACK information corresponding to the first PDSCH with the high priority determined according to the first DAI.

Or, the first priority may also be a low priority, and the first HARQ-ACK information is HARQ-ACK information corresponding to the first PDSCH of the low priority determined according to the first DAI.

In the first mode, when the first NFI indicates that the first PDSCH is not a new group, the HARQ-ACK corresponding to the control information before the current time unit needs to be reserved, so that the HARQ-ACK feedback codebook may include the HARQ-ACK information before the current time unit and the HARQ-ACK information corresponding to the currently determined first PDSCH at the same time, in this case, the HARQ-ACK information corresponding to the first PDSCH is actually determined according to the first DAI, where the feedback information of the high priority traffic and the low priority traffic is specifically distinguished according to the priority of the first PDSCH.

And it is worth to be noted that if the time unit for sending the HARQ-ACK feedback codebook is not yet obtained after determining the HARQ-ACK information corresponding to the first PDSCH, the HARQ-ACK feedback codebook further includes HARQ-ACK information after the current time unit until the time unit for sending the HARQ-ACK feedback codebook is reached.

Referring to fig. 5, a first method is described below, where fig. 5 is a schematic diagram of a HARQ-ACK feedback codebook according to an embodiment of the present application:

taking the first DAI including only C-DAI as an example, assuming that the first control information DCI4 includes a first group identifier of group 0, the first priority information is high priority, the first NFI is no, and the first DAI is 4, determining HARQ-ACK information corresponding to the first PDSCH of the high priority, and arranging the HARQ-ACK information to a position corresponding to a DAI value in DCI4 according to the first DAI, and then forming a HARQ-ACK feedback codebook according to the HARQ-ACK information corresponding to the DCI before the current time unit and the HARQ-ACK information corresponding to the first PDSCH.

The second method comprises the following steps:

if the first NFI indicates that the first PDSCH group is a new group and the first priority information indicates that the priority of the first PDSCH is the first priority, the method further includes:

and discarding second HARQ-ACK information before the current time unit according to the first control information, wherein the group identifier of the PDSCH group corresponding to the second HARQ-ACK information is the same as the first group identifier, the priority of the PDSCH corresponding to the second HARQ-ACK information is the first priority, and similarly, the first priority may be high priority or low priority.

Specifically, if the first NFI indicates that the first PDSCH group is a new group, all HARQ-ACK information corresponding to the previous control information and having the same current group identifier and priority are discarded, and data of the HARQ-ACK information does not need to be retransmitted, the HARQ-ACK feedback codebook includes HARQ-ACK information corresponding to the first PDSCH and HARQ-ACK information that has not been discarded before the current time unit.

For example, referring to fig. 6, fig. 6 is a schematic diagram of a HARQ-ACK feedback codebook provided in the embodiment of the present application:

assuming that the first group id in the current first control information DCI4 indicates that the first PDSCH is of group 0 and the priority of the first PDSCH is high priority, and the PDSCH corresponding to DCI1 and DCI3 of the previous 3 control information is of group 1 and the priority is high priority, the HARQ-ACK information corresponding to DCI1 and DCI3 is discarded, because the priority of DCI2 therein is different from the priority of the first PDSCH and therefore is not discarded, the HARQ-ACK information corresponding to DCI2 and the HARQ-ACK information corresponding to DCI4 are included in the final HARQ-ACK feedback codebook.

In another possible implementation:

when the indication information of "whether to trigger the non-scheduled PDSCH group" in the first control information is "yes", it indicates that the current first control information also corresponds to the non-scheduled PDSCH, and performs data transmission through the non-scheduled PDSCH, which is described below.

The first control information includes a first group identifier, first priority information, a first new feedback group indication NFI, a first downlink assignment index DAI, and further includes a second group identifier, a second NFI, and a second DAI.

That is, the first control information further includes a second set of flags, a second NFI and a second DAI, on the basis of the first PDSCH related indication information.

The second group identifier is used for indicating a second PDSCH group corresponding to a currently unscheduled second PDSCH, the first priority information is also used for indicating the priority of the second PDSCH, the second NFI is used for indicating whether the second PDSCH group is a new group, and the second DAI is used for indicating the indication of the number of data allocations of the second PDSCH group.

In a possible implementation manner, it is assumed that the current first control information only indicates groups corresponding to two PDSCHs, the current first control information may not include a second group identifier, and specifically, when the first group identifier indicates that the first PDSCH is a group 0, the second PDSCH group defaults to a group 1; alternatively, when the first group identifier indicates that the first PDSCH is group 1, the second PDSCH group defaults to group 0.

However, when there are more than two groups corresponding to the PDSCH indicated by the first control information, the first control information needs to be provided with the second group identifier.

It should be noted that the first priority information in this embodiment indicates the priority of the first PDSCH and the priority of the second PDSCH at the same time, that is, the priority of the first PDSCH and the priority of the second PDSCH are the same in this embodiment.

the third method comprises the following steps:

and if the second NFI indicates that the second PDSCH group is not a new group and the first priority information indicates that the priority of the second PDSCH is the first priority, the HARQ-ACK information comprises HARQ-ACK information before the current time unit and first HARQ-ACK information and third HARQ-ACK information, wherein the third HARQ-ACK information is the HARQ-ACK information corresponding to the second PDSCH with the first priority determined according to the second DAI.

The third embodiment is similar to the first embodiment, except that the PDSCH in the present embodiment is the second PDSCH, which corresponds to the third HARQ-ACK information, and the rest of specific implementations may refer to the first embodiment.

The method is as follows:

if the second NFI indicates that the second PDSCH group is a new group and the first priority information indicates that the priority of the second PDSCH group is the first priority, the method further includes:

and according to the first control information, discarding fourth HARQ-ACK information before the current time unit, wherein the group identifier of the PDSCH group corresponding to the fourth HARQ-ACK information is the same as the second group identifier, and the priority of the PDSCH corresponding to the fourth HARQ-ACK information is the first priority.

A fourth method in this embodiment is similar to the second method in the foregoing embodiment, except that the PDSCH in this embodiment is the second PDSCH, and what needs to be discarded corresponds to the fourth HARQ-ACK information, and the remaining specific implementation may refer to the second method in the foregoing embodiment.

It is worth to say that, the non-scheduled second PDSCH in the present embodiment and the scheduled first PDSCH in the above embodiments may be independent, that is, the following situations may occur:

the first NFI indicates that the first PDSCH group is a new group, and the second NFI indicates that the second PDSCH group is a new group;

the first NFI indicates that the first PDSCH group is not a new group, the second NFI indicates that the second PDSCH group is a new group;

the first NFI indicates that the first PDSCH group is a new group, and the second NFI indicates that the second PDSCH group is not a new group;

in the above three cases, the final HARQ-ACK feedback codebook needs to be determined according to the respective corresponding conditions, so the final HARQ-ACK feedback codebook depends on the actual situation of each control information.

In yet another alternative implementation:

when the first control information also corresponds to a non-scheduled PDSCH, the non-scheduled PDSCH may correspond to separate priority information, which will be described below.

The first control information comprises a first group identifier, first priority information, a first new feedback group indication NFI, a first downlink assignment index DAI, a second group identifier, a second NFI, a second DAI, and second priority information.

The difference from the above embodiments is that the first priority information is used to indicate the priority of the first PDSCH and the priority of the second PDSCH together, whereas in the present embodiment, the first priority information is used to indicate the priority of the first PDSCH separately, and the second priority information is used to indicate the priority of the second PDSCH separately.

the fifth mode is as follows:

and if the second NFI indicates that the second PDSCH group is not a new group and the second priority information indicates that the priority of the second PDSCH is the second priority, the HARQ-ACK information comprises HARQ-ACK information before the current time unit and first HARQ-ACK information and fourth HARQ-ACK information, wherein the fourth HARQ-ACK information is the HARQ-ACK information corresponding to the second PDSCH with the second priority determined according to the second DAI.

A fifth mode in this embodiment is similar to the third mode in the foregoing embodiment, except that the priority of the second PDSCH in this embodiment is the second priority indicated by the second priority information, where the second priority may be a high priority or a low priority, and is independent of the first priority, and the remaining specific implementation may refer to the third mode in the foregoing embodiment.

The method six:

if the second NFI indicates that the second PDSCH group is a new group and the second priority information indicates that the priority of the second PDSCH group is a second priority, the method further includes:

A sixth mode in this embodiment is similar to the fourth mode in the foregoing embodiment, except that the priority of the second PDSCH in this embodiment is the second priority indicated by the second priority information, where the second priority may be a high priority or a low priority, which is independent of the first priority, and the remaining specific implementation may refer to the fourth mode in the foregoing embodiment.

In this embodiment, the first control information further includes first indication information K1, where K1 is used to indicate a time unit for transmitting HARQ-ACK information corresponding to the currently scheduled first PDSCH.

First, describing the first indication information K1, the network device will inform the UE of which time unit to send the HARQ-ACK feedback codebook through the first indication information, and assuming that the downlink data is sent through the PDSCH in the nth time unit, and the first indication information K1 is 3, the UE will send the HARQ-ACK feedback codebook in the (n + K1) (3) th time unit, that is, send the HARQ-ACK feedback codebook after 3 time units.

However, since the downlink scheduling DCI cannot determine the specific time for HARQ-ACK feedback in some scenarios (e.g. exceeding the maximum occupied time of the current downlink channel), a non-numeric PDSCH-to-HARQ-timing-indicator (PDSCH-to-HARQ-timing-indicator, denoted by K1 in this embodiment) may be used to indicate the time unit for feeding HARQ-ACK back.

Since scheduled PDSCH and non-scheduled PDSCH are described in this application, it should be noted that only scheduled PDSCH has a corresponding K1.

For the enhanced dynamic codebook, when the first indication information K1 corresponding to one PDSCH is a non-numerical value, the specific value corresponding to K1 is obtained by the feedback triggered by the numerical value K1 in the next control information and including the PDSCH group, however, in this case, the HARQ-ACK information with high priority and low priority cannot be distinguished.

Therefore, in the present embodiment, if K1 is a non-numerical value, the second indication information K2 included in the second control information is determined as the numerical value corresponding to K1.

The time unit corresponding to the second control information is later than the time corresponding to the first control information, K2 is a numerical value, the second control information includes third priority information, and the third priority information in the second control information is the same as the first priority information in the first control information.

That is, the second control information is the control information subsequent to the first control information, and it is necessary to ensure that the third priority information in the second control information is the same as the first priority in the first control information, where the third priority information is used to indicate the priority of the scheduled PDSCH corresponding to the second control information, that is, the second control information in the present embodiment is not necessarily the next control information of the first control information, but the subsequent priority information is the same, and the indication information is the control information of the numerical value.

By setting the restriction condition that the third priority information is the same as the first priority information, it can be effectively ensured that the non-value K1 corresponding to the PDSCH with high priority is determined according to the value K2 corresponding to the PDSCH with high priority, so as to realize the differentiation of the HARQ-ACK information with high priority and low priority.

On the basis of the foregoing embodiment, the first control information is similar to the first control information, and the second control information may further include a third group identifier, where the third group identifier is used to indicate a PDSCH group corresponding to a currently scheduled PDSCH.

Then, there may be further provided: the third group identification is identical to the first group identification.

That is, in addition to the restriction condition that the priority information is the same, it may be further required that the group identifications are the same, that is, assuming that the current first control information indicates that the first group identification is group 0 and the first priority information is high priority, it is assumed that there is currently a control information whose priority information is high priority and in which the indication information K2 is a numerical value but its corresponding group identification is group 1, in which case the numerical value corresponding to K1 cannot be determined according to K2 of the control information because the group identifications of the two are different.

It is necessary that the third group identification of the second control information is identical to the first group identification and the third priority information of the second control information is identical to the first priority information.

In addition, in the enhanced dynamic codebook, the NR-U also supports one-shot HARQ-ACK feedback, that is, all HARQ-ACKs of all HARQ processes are fed back.

In this case, some HARQ-ACK information is indicated with priority by the priority information in the first control information, however, processing corresponding to the HARQ-ACK information is also required for the remaining HARQ processes (processes) that do not indicate priority, where the HARQ processes refer to HARQ using stop-and-wait protocol (stop-and-wait protocol) to transmit data.

Specifically, when the first control information indicates to perform one-shot HARQ-ACK feedback, HARQ-ACK information corresponding to the priority indicated by the priority information in the first control information is generated to a corresponding position of a HARQ-ACK feedback codebook according to the DAI, and for HARQ-ACK information corresponding to HARQ processes for which other priority information does not indicate a priority:

and if the priority information in the first control information is high priority, setting HARQ-ACK information except the HARQ-ACK information corresponding to the PASCH with the high priority as NACK.

If the priority information in the first control information is low priority, setting the HARQ-ACK information except the HARQ-ACK information corresponding to the PASCH with the low priority as the original HARQ-ACK information, namely, if the original HARQ-ACK information is ACK, currently setting the HARQ-ACK information as ACK; if the original HARQ-ACK information is NACK, the current HARQ-ACK information is set to NACK, and if 2-codebook transmission is supported, HARQ-ACK information other than the HARQ-ACK information corresponding to the low-priority PASCH is set to repeat the original HARQ-ACK information.

The HARQ-ACK information corresponding to the high-level service and the low-level service is distinguished by correspondingly processing the rest HARQ-ACK information without indicating the priority according to the HARQ-ACK information corresponding to the high-priority and the low-priority.

To sum up, when URLLC and eMBB services are used in unlicensed spectrum, the present application introduces a priority mechanism into the existing enhanced dynamic codebook feedback to achieve differentiation between high-level services and low-level services, thereby effectively ensuring low time delay in URLLC and eMBB services.

Fig. 7 is a first structural diagram of an HARQ-ACK information feedback device according to an embodiment of the present invention. As shown in fig. 7, the apparatus 70 includes: a receiving module 701 and a transmitting module 702.

A receiving module 701, configured to receive first control information sent by a network device, where the first control information includes priority information;

a sending module 702, configured to send a hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback codebook to a network device according to the priority information, where the HARQ-ACK feedback codebook includes HARQ-ACK information corresponding to a high-priority Physical Downlink Shared Channel (PDSCH) and/or HARQ-ACK information of a low-priority PDSCH, and the PDSCH is the PDSCH corresponding to the first control information.

The apparatus provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.

Fig. 8 is a structural diagram illustrating a HARQ-ACK information feedback apparatus according to an embodiment of the present invention. As shown in fig. 8, in this embodiment, on the basis of the embodiment in fig. 7, if the first NFI indicates that the first PDSCH group is a new group, and the first priority information indicates that the priority of the first PDSCH is a first priority, the apparatus further includes: a discard module 803;

in a possible design, the discarding module 803 is configured to discard, according to the first control information, second HARQ-ACK information before a current time unit, where a group identifier of a PDSCH group corresponding to the second HARQ-ACK information is the same as the first group identifier, and a priority of a PDSCH corresponding to the second HARQ-ACK information is a first priority.

the second group identifier is used for indicating a second PDSCH group corresponding to a second PDSCH which is not scheduled currently, the first priority information is further used for indicating a priority of the second PDSCH, the second NFI is used for indicating whether the second PDSCH group is a new group, and the second DAI is used for indicating data allocation number indication of the second PDSCH group.

In one possible design, if the second NFI indicates that the second PDSCH group is a new group and the first priority information indicates that the priority of the second PDSCH group is a first priority, the discarding module 803 is further configured to:

In one possible design, if the second NFI indicates that the second PDSCH group is a new group and the second priority information indicates that the priority of the second PDSCH group is a second priority, the discarding module 803 is further configured to:

the third group identification is the same as the first group identification.

In one possible design, the sending module 801 is further configured to:

Fig. 9 is a schematic diagram of a hardware structure of a HARQ-ACK information feedback device according to an embodiment of the present invention, and as shown in fig. 9, a HARQ-ACK information feedback device 90 according to this embodiment includes: a processor 901 and a memory 902; wherein

A memory 902 for storing computer-executable instructions;

a processor 901 configured to execute computer-executable instructions stored in a memory to implement the steps performed by the HARQ-ACK information feedback method in the above embodiments. Reference may be made in particular to the description relating to the method embodiments described above.

Alternatively, the memory 902 may be separate or integrated with the processor 901.

When the memory 902 is separately provided, the HARQ-ACK information feedback apparatus further includes a bus 903 for connecting the memory 902 and the processor 901.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the HARQ-ACK information feedback method performed by the above HARQ-ACK information feedback device is implemented.

In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.

The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A HARQ-ACK information feedback method is characterized by comprising the following steps:

receiving first control information sent by network equipment, wherein the first control information comprises priority information, a first group identifier, first priority information, a first new feedback group indication (NFI) and a first Downlink Assignment Index (DAI); the first group identifier is used to indicate a first PDSCH group corresponding to a currently scheduled first PDSCH, the first priority information is used to indicate a priority of the first PDSCH, the first NFI is used to indicate whether the first PDSCH group is a new group, and the first DAI is used to indicate an indication of a data allocation number of the first PDSCH group;

sending a hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback codebook to network equipment according to the priority information, wherein the HARQ-ACK feedback codebook comprises HARQ-ACK information corresponding to a Physical Downlink Shared Channel (PDSCH) with a high priority and/or HARQ-ACK information corresponding to a PDSCH with a low priority, and the PDSCH is the PDSCH corresponding to the first control information;

and if the first NFI indicates that the first PDSCH group is a new group and the first priority information indicates that the priority of the first PDSCH is the first priority, discarding second HARQ-ACK information before the current time unit according to the first control information, wherein the group identifier of the PDSCH group corresponding to the second HARQ-ACK information is the same as the first group identifier, and the priority of the PDSCH corresponding to the second HARQ-ACK information is the first priority.

2. The method of claim 1, wherein the PDSCH is used for transmitting first data sent by the network device, and wherein the HARQ-ACK information is used for indicating whether the first data is correctly received;

3. The method of claim 1, wherein if the first NFI indicates that the first PDSCH group is not a new group and the first priority information indicates that the priority of the first PDSCH is a first priority, the HARQ-ACK feedback codebook comprises HARQ-ACK information prior to a current time unit and first HARQ-ACK information, wherein the first HARQ-ACK information is HARQ-ACK information corresponding to a first PDSCH of the first priority determined according to the first DAI.

4. The method of any of claims 1-3, wherein the first control information further comprises a second group identification, a second NFI, a second DAI;

5. The method of claim 4, wherein if the second NFI indicates that the second PDSCH group is not a new group and the first priority information indicates that the priority of the second PDSCH is a first priority, the HARQ-ACK information comprises HARQ-ACK information before a current time unit and first HARQ-ACK information and third HARQ-ACK information, wherein the third HARQ-ACK information is HARQ-ACK information corresponding to the second PDSCH of the first priority determined according to the second DAI.

6. The method of claim 4, wherein if the second NFI indicates that the second PDSCH group is a new group and the first priority information indicates that the priority of the second PDSCH group is a first priority, the method further comprises:

7. The method of any of claims 3, 5-6, wherein the first priority is a high priority or a low priority.

8. The method of claim 4, wherein the first control information further comprises second priority information;

9. The method of claim 8, wherein if the second NFI indicates that the second PDSCH group is not a new group and the second priority information indicates that the priority of the second PDSCH is a second priority, the HARQ-ACK information comprises HARQ-ACK information before a current time unit and first HARQ-ACK information and fourth HARQ-ACK information, wherein the fourth HARQ-ACK information is HARQ-ACK information corresponding to the second PDSCH of the second priority determined according to the second DAI.

10. The method of claim 8, wherein if the second NFI indicates that the second PDSCH group is a new group and the second priority information indicates that the second PDSCH group has a second priority, the method further comprises:

11. The method of claim 9 or 10, wherein the second priority is a high priority or a low priority.

12. The method of claim 11, wherein the first control information further comprises first indication information K1, wherein the K1 is used for indicating a time unit for transmitting HARQ-ACK information corresponding to the currently scheduled first PDSCH.

13. The method according to claim 12, wherein if the K1 is a non-numerical value, determining second indication information K2 included in second control information as the numerical value corresponding to K1, wherein a time unit corresponding to the second control information is later than a time unit corresponding to the first control information, the K2 is the numerical value, the second control information includes third priority information, and the third priority information in the second control information is the same as the first priority information in the first control information.

14. The method of claim 13, wherein the second control information further comprises a third group identifier, and wherein the third group identifier is used to indicate a PDSCH group corresponding to a currently scheduled PDSCH;

the third group identification is the same as the first group identification.

15. The method according to any one of claims 12-14, further comprising:

16. An apparatus for feeding back HARQ-ACK information, comprising:

a receiving module, configured to receive first control information sent by a network device, where the first control information includes priority information, a first group identifier, first priority information, a first new feedback group indicator NFI, and a first downlink assignment index DAI;

the first group identifier is used to indicate a first PDSCH group corresponding to a currently scheduled first PDSCH, the first priority information is used to indicate a priority of the first PDSCH, the first NFI is used to indicate whether the first PDSCH group is a new group, and the first DAI is used to indicate an indication of a data allocation number of the first PDSCH group;

a sending module, configured to send a hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback codebook to a network device according to the priority information, where the HARQ-ACK feedback codebook includes HARQ-ACK information corresponding to a high-priority Physical Downlink Shared Channel (PDSCH) and/or HARQ-ACK information of a low-priority PDSCH, and the PDSCH is the PDSCH corresponding to the first control information;

if the first NFI indicates that the first PDSCH group is a new group and the first priority information indicates that the priority of the first PDSCH is a first priority, the apparatus further includes: a discarding module;

17. The apparatus of claim 16, wherein the PDSCH is used for transmitting first data sent by the network device, and wherein the HARQ-ACK information is used for indicating whether the first data is correctly received;

18. The apparatus of claim 16, wherein if the first NFI indicates that the first PDSCH group is not a new group and the first priority information indicates that the priority of the first PDSCH is a first priority, the HARQ-ACK feedback codebook comprises HARQ-ACK information prior to a current time unit and first HARQ-ACK information, wherein the first HARQ-ACK information is HARQ-ACK information corresponding to a first PDSCH of the first priority determined according to the first DAI.

19. The apparatus of any of claims 16-18, wherein the first control information further comprises a second group identification, a second NFI, a second DAI;

20. The apparatus of claim 19, wherein if the second NFI indicates that the second PDSCH group is not a new group and the first priority information indicates that the priority of the second PDSCH is a first priority, the HARQ-ACK information comprises HARQ-ACK information prior to a current time unit and first and third HARQ-ACK information, wherein the third HARQ-ACK information is HARQ-ACK information corresponding to the first priority second PDSCH determined according to the second DAI.

21. The apparatus of claim 20, wherein if the second NFI indicates that the second PDSCH group is a new group and the first priority information indicates that the priority of the second PDSCH group is a first priority, the discarding module is further configured to:

22. The apparatus of claim 21, wherein the first priority is a high priority or a low priority.

23. The apparatus of claim 19, wherein the first control information further comprises second priority information;

24. The apparatus of claim 23, wherein if the second NFI indicates that the second PDSCH group is not a new group and the second priority information indicates that the priority of the second PDSCH is a second priority, the HARQ-ACK information comprises HARQ-ACK information prior to a current time unit and first HARQ-ACK information and fourth HARQ-ACK information, wherein the fourth HARQ-ACK information is HARQ-ACK information corresponding to the second PDSCH of the second priority determined according to the second DAI.

25. The apparatus of claim 23, wherein if the second NFI indicates that the second PDSCH group is a new group and the second priority information indicates that the priority of the second PDSCH group is a second priority, the discarding module is further configured to:

and discarding fifth HARQ-ACK information before the current time unit according to the first control information, wherein the group identifier of the PDSCH group corresponding to the fifth HARQ-ACK information is the same as the second group identifier, and the priority of the PDSCH corresponding to the fifth HARQ-ACK information is the second priority.

26. The apparatus of claim 24 or 25, wherein the second priority is a high priority or a low priority.

27. The apparatus of claim 26, wherein the first control information further comprises first indication information K1, wherein the K1 is used for indicating a time unit for transmitting HARQ-ACK information corresponding to the currently scheduled first PDSCH.

28. The apparatus of claim 27, wherein if the K1 is a non-numeric value, the apparatus determines a second indication information K2 included in a second control information as a numeric value corresponding to the K1, wherein a time unit corresponding to the second control information is later than a time unit corresponding to the first control information, the K2 is a numeric value, the second control information includes a third priority information, and the third priority information in the second control information is the same as the first priority information in the first control information.

29. The apparatus of claim 28, wherein the second control information further comprises a third group identifier indicating a PDSCH group corresponding to a currently scheduled PDSCH;

the third group identification is the same as the first group identification.

30. The apparatus of any one of claims 27-29, wherein the sending module is further configured to:

31. An HARQ-ACK information feedback apparatus, comprising:

a memory for storing a program;

a processor for executing the program stored by the memory, the processor being configured to perform the method of any of claims 1 to 15 when the program is executed.

32. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 15.