CN111800230B

CN111800230B - Method and terminal equipment for feeding back hybrid automatic repeat request acknowledgement

Info

Publication number: CN111800230B
Application number: CN201910785968.2A
Authority: CN
Inventors: 李娜; 潘学明; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2021-12-03
Anticipated expiration: 2039-08-23
Also published as: WO2021036950A1; CN111800230A; CN114142976A

Abstract

The embodiment of the invention discloses a method for feeding back hybrid automatic repeat request acknowledgement and terminal equipment, which are used for improving the system effectiveness. The method comprises the following steps: determining a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first hybrid automatic repeat request acknowledgement (HARQ-ACK) or a second time granularity for feeding back a second HARQ-ACK of the terminal equipment, wherein the third HARQ-ACK is the HARQ-ACK of a physical downlink channel scheduled by Downlink Control Information (DCI) with a specific format; and feeding back the third HARQ-ACK according to the third time granularity.

Description

Method and terminal equipment for feeding back hybrid automatic repeat request acknowledgement

Technical Field

The embodiment of the invention relates to the field of communication, in particular to a method and terminal equipment for feeding back hybrid automatic repeat request acknowledgement.

Background

After a base station transmits a Physical Downlink Shared Channel (PDSCH)/or a Physical Downlink Control Channel (PDCCH) indicating Semi-Persistent Scheduling (SPS) PDSCH release, a User Equipment (UE) needs to feed back a decoding result of a PDSCH/SPS release PDCCH to the base station after receiving and decoding the PDCCH, so as to tell the base station whether the PDCCH released by the PDSCH/SPS PDSCH is successfully decoded. The base station performs the next scheduling decision according to the feedback, and this process is called Hybrid Automatic Repeat reQuest (HARQ).

The slot (slot) for feeding back the HARQ-ACK is determined by a PDSCH-to-HARQ timing indicator K indicated in Downlink Control Information (DCI) in a New Radio (NR). Namely, the UE feeds back the HARQ-ACK according to the slot level. HARQ-ACK (Hybrid Automatic Repeat request-acknowledgement) information fed back by the UE may be carried on a Physical Uplink Control CHannel (PUCCH) or a Physical Uplink Shared CHannel (PUSCH).

The fifth generation (5G) mobile communication system needs to be adapted to more diverse scenarios and service demands than the past mobile communication systems. In order to adapt to more diversified scenes and service requirements, a plurality of PUCCHs for bearing HARQ-ACK are fed back in one slot, that is, one slot is divided into a plurality of sub-slots (sub-slots), and the length of each sub-slot can be configured by Radio Resource Control (RRC).

At present, no reasonable way for feeding back the HARQ-ACK exists, and the HARQ-ACK can be effectively fed back when the UE receives the PDCCH released by the PDSCH/SPS PDSCH scheduled by a specific DCI (e.g., DCI format 1_0) under the condition that the UE configures HARQ-ACK feedback of at least 1sub-slot level.

Disclosure of Invention

The embodiment of the invention aims to provide a method and terminal equipment for feeding back hybrid automatic repeat request acknowledgement (HARQ) so as to improve the effectiveness of a mobile communication system.

In a first aspect, a method for feeding back an acknowledgement of a hybrid automatic repeat request is provided, the method comprising: determining a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first hybrid automatic repeat request acknowledgement (HARQ-ACK) or a second time granularity for feeding back a second HARQ-ACK of the terminal equipment, wherein the third HARQ-ACK is the HARQ-ACK of a physical downlink channel scheduled by Downlink Control Information (DCI) with a specific format; and feeding back the third HARQ-ACK according to the third time granularity.

In a second aspect, a terminal device is provided, which includes: a determining module, configured to determine a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first HARQ-ACK or a second time granularity for feeding back a second HARQ-ACK of the terminal device, where the third HARQ-ACK is an HARQ-ACK of a physical downlink channel scheduled by DCI of a specific format; and the feedback module is used for feeding back the third HARQ-ACK according to the third time granularity.

In a third aspect, a terminal device is provided, which comprises a processor, a memory and a computer program stored on the memory and executable on the processor, and which, when executed by the processor, implements the steps of a method for feeding back an acknowledgement of a hybrid automatic repeat request according to the first aspect.

In a fourth aspect, a computer readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of a method of feeding back hybrid automatic repeat request acknowledgements, as set forth in the first aspect.

In the embodiment of the invention, a third time granularity for feeding back a third HARQ-ACK is determined by confirming the first time granularity of the HARQ-ACK or feeding back the second time granularity of the second HARQ-ACK according to a first hybrid automatic repeat request fed back by the terminal equipment, wherein the third HARQ-ACK is the HARQ-ACK of a physical downlink channel scheduled by downlink control information DCI with a specific format; and feeding back the third HARQ-ACK according to the third time granularity, wherein the HARQ-ACK can be effectively fed back when the UE receives a PDCCH released by a PDSCH/SPS PDSCH scheduled by a specific DCI (e.g., DCI format 1_0) under the condition that the UE configures HARQ-ACK feedback of at least 1sub-slot level, thereby improving the effectiveness of the mobile communication system.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic flow chart diagram of a method of feeding back hybrid automatic repeat request acknowledgements according to an embodiment of the invention;

fig. 2 is a schematic flow chart diagram of a method of feeding back hybrid automatic repeat request acknowledgements according to another embodiment of the present invention;

3a-3b illustrate diagrams for determining a target sub-slot for feeding back a third HARQ-ACK according to an embodiment of the present invention;

fig. 4 is a schematic flow chart diagram of a method of feeding back hybrid automatic repeat request acknowledgements according to another embodiment of the present invention;

fig. 5 is a diagram illustrating a determination of a target slot for feeding back a third HARQ-ACK according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. 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 application. "and/or" in various embodiments of the present specification means at least one of front and rear.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Long Term Evolution (LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD) System, a Universal Mobile Telecommunications System (UMTS) or Worldwide Interoperability for Microwave Access (WiMAX) communication System, a 5G System, a New Radio (NR) System, or a subsequent Evolution communication System.

In the embodiment of the present invention, the Terminal device may include, but is not limited to, a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Mobile phone (Mobile Telephone), a User Equipment (UE), a handset (handset), a portable device (portable Equipment), a vehicle (vehicle), etc., and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile apparatus.

In the embodiment of the present invention, the network device is a device deployed in a radio access network to provide a wireless communication function for a terminal device. The network device may be a base station, and the base station may include various macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different radio access technologies, the names of devices having a base station function may differ. For example, in an LTE network, called an Evolved node B (eNB or eNodeB), in a third Generation (3G) network, called a node B (node B), or a network device in a later Evolved communication system, etc., although the words are not limiting.

As shown in fig. 1, an embodiment of the present invention provides a method 100 for feeding back an acknowledgement of a hybrid automatic repeat request, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s102: and determining a third time granularity for feeding back a third HARQ-ACK according to the first time granularity for feeding back the first hybrid automatic repeat request acknowledgement HARQ-ACK or the second time granularity for feeding back the second HARQ-ACK of the terminal equipment.

And the third HARQ-ACK is HARQ-ACK of a physical downlink channel scheduled by downlink control information DCI with a specific format.

S104: and feeding back the third HARQ-ACK according to the third time granularity.

The third time granularity is a time slot or a sub-time slot.

Therefore, the embodiment of the present invention provides a method for feeding back a hybrid automatic repeat request acknowledgement, which determines a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first HARQ-ACK or a second time granularity for feeding back a second HARQ-ACK of the terminal device, where the third HARQ-ACK is an HARQ-ACK of a physical downlink channel scheduled by DCI (downlink control information) of a specific format; and feeding back the third HARQ-ACK according to the third time granularity, wherein the HARQ-ACK can be effectively fed back when the UE receives a PDCCH released by a PDSCH/SPS PDSCH scheduled by a specific DCI (e.g., DCI format 1_0) under the condition that the UE configures HARQ-ACK feedback of at least 1sub-slot level, thereby improving the effectiveness of the mobile communication system.

As shown in fig. 2, an embodiment of the present invention provides a method 200 for feeding back an acknowledgement of a hybrid automatic repeat request, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s202: determining the first time granularity or the second time granularity as the third time granularity when the first time granularity and the second time granularity are both sub-slot levels.

The terminal device is preconfigured with a first time granularity for feeding back the first HARQ-ACK and a second time granularity for feeding back the second HARQ-ACK, wherein the first time granularity and the second time granularity are both in a sub-slot level, and at this time, a third HARQ-ACK of the physical downlink channel scheduled by the DCI with the specific format is in the sub-slot level.

According to different types of DCI indication information, such as scheduling downlink/uplink data transmission, power control commands, slot format indication, resource preemption, etc., different DCI formats may be used. The DCI indicating downlink scheduling in NR, that is, the DCI for scheduling PDSCH transmission, is mainly DCI formats 1_0 and 1_1, where DCI format 1_0 is smaller than DCI format 1_1, the information bit size of DCI format 1_0 is smaller, and some bit fields in DCI format 1_1 do not exist in DCI format 1_0, but are determined in an RRC predefined manner. The bit number of the DCI format 1_0 is small, and the DCI format 1_0 adopts the same resource transmission, and has a lower code rate and higher reliability than the DCI format 1_ 1. The DCI of the specific format in this step may be DCI format 1_ 0.

Fig. 3a-3b are diagrams illustrating determining a target sub-slot for feeding back a third HARQ-ACK according to an embodiment of the present invention, where as shown in the figure, the UE configures a first time granularity for feeding back the first HARQ-ACK as sub-slot1, and a second time granularity for feeding back the second HARQ-ACK as sub-slot 2.

Wherein, a sub-slot1 is 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols (shown in fig. 3 a), and one slot is divided into 2 sub-slots 1; the sub-slot2 is 4/3 symbols (shown in connection with fig. 3 b), and one slot is divided into 4 sub-slots 2. At this time, the sub-slot1 or the sub-slot2 may be determined as the third time granularity, and may be configured by RRC.

S204: and determining a target time slot or a target sub-time slot for feeding back the third HARQ-ACK according to the third time granularity and the timing indication K from the PDSCH to the HARQ-ACK indicated by the DCI with the specific format.

If the sub-slot1 is determined to be the third time granularity, k1 represents the PDSCH received at the nth sub-slot1, and the HARQ-ACK is fed back at the n + k1sub-slot 1; if sub-slot2 is determined as the third time granularity, k1 indicates that the PDSCH received at the nth sub-slot2 feeds back its HARQ-ACK at the n + k1sub-slot 2.

Where k1 may be indicated by a PDSCH-to-HARQ-feedback-timing-indicator field in a PDCCH that schedules PDSCH, for DCI format 1_0(fallback DCI), for example, k1 may indicate a value in {1,2,3,4,5,6,7,8 }. For other DCI formats, such as DCI format 1_1, the value that k1 may indicate is configured by RRC. And when the PDSCH is received at the nth sub-slot 1/2, namely the sub-slot1 or the sub-slot2 corresponding to the end position of the PDSCH is represented as the nth sub-slot1 or the nth sub-slot 2.

As shown in fig. 3a, PDSCH1 is received in 1 st sub-slot1, k1 is 3, and HARQ-ACK is fed back in 4 th sub-slot 1. As shown in fig. 3b, PDSCH2 is received in sub-slot2, k1 is 3, and HARQ-ACK is fed back in sub-slot 2.

S206: and feeding back the third HARQ-ACK through a third PUCCH resource corresponding to the target time slot or the target sub-time slot.

Referring to fig. 3a, the third HARQ-ACK is fed back by using PUCCH1 resource corresponding to sub-slot1 of 4 th. Referring to fig. 3b, the third HARQ-ACK is fed back by using PUCCH2 resource corresponding to sub-slot2 of fig. 5.

In one implementation, the DCI of the particular format is in a particular search space type. In other words, in step S202, in case that the first temporal granularity and the second temporal granularity are both sub-slot levels and the DCI of the specific format is in a specific search space type, the first temporal granularity or the second temporal granularity is determined as the third temporal granularity, and the steps of steps S204-S206 are performed.

In an implementation manner, assuming that the priority of the second HARQ-ACK is higher than that of the first HARQ-ACK, under the condition that the time domain resources of the third PUCCH where the third HARQ-ACK is located and the time domain resources of the first PUCCH where the first HARQ-ACK is located overlap, if the multiplexing time requirement is met, the third HARQ-ACK and the first HARQ-ACK are multiplexed on one PUCCH for transmission.

Referring to fig. 3a, for the PDSCH scheduled by the DCI with the specific format, the UE feeds back the HARQ-ACK according to the sub-slot1 corresponding to the first HARQ-ACK with low priority, that is, the PDSCH received at the nth sub-slot1 and the HRQ-ACK at the n + k1sub-slot 1. As shown in fig. 3a, in one implementation, PDCCH1 and PDCCH2 are both scheduled by non-format-specific DCI and respectively indicate that the UE feeds back according to sub-slot1 or sub-slot2, PDCCH3 is scheduled by format-specific DCI, k1 is 2, the UE feeds back HARQ-ACK according to sub-slot1, the UE feeds back HARQ-ACK of PDSCH1 and PDSCH3 in the 4 th sub-slot of fig. 3a, and two HARQ-ACKs correspond to one HARQ-ACK codebook (codebook) and one PUCCH resource.

As shown in fig. 4, an embodiment of the present invention provides a method 400 for feeding back an acknowledgement of a hybrid automatic repeat request, which may be performed by a terminal device, in other words, by software or hardware installed in the terminal device, and the method includes the following steps:

s402: the third temporal granularity is a slot level if the first and second temporal granularities are both sub-slot levels and the DCI of the particular format is in a common search space type, or if the first or second temporal granularity is a slot level.

And if the third time granularity is slot, k1 indicates that the PDSCH received in the nth slot feeds back its HARQ-ACK in the nth + k1 slot. Wherein k1 may be indicated by a PDSCH-to-HARQ-feedback-timing-indicator field in a PDCCH scheduling a PDSCH.

S404: and determining a target time slot for feeding back the third HARQ-ACK according to the third time granularity and the timing indication K from the PDSCH to the HARQ-ACK indicated by the DCI with the specific format.

Fig. 5 is a schematic diagram illustrating determining a target slot for feeding back a third HARQ-ACK according to an embodiment of the present invention, as shown in step S402, the UE determines to feed back the HARQ-ACK according to a slot level. In step S404, the UE determines a target slot for feeding back the third HARQ-ACK, for example, as shown, PDSCH3 received in slot1, k1 is 1, and HARQ-ACK is fed back in slot n +1, i.e., slot 2.

S406: and feeding back the third HARQ-ACK through a third PUCCH resource corresponding to the target time slot.

And feeding back the HARQ-ACK in the 2 nd slot, wherein the corresponding PUCCH resource is determined from the PUCCH resource configuration of R15, such as PUCCH 3. Feeding back the third HARQ-ACK through PUCCH 3.

In one implementation, at a certain time, the PUCCH resource corresponding to the DCI of a specific format may overlap with the PUCCH resource corresponding to the first or second HARQ-ACK, and the UE may determine the priority of the different HARQ-ACKs so as to determine the transmission mode thereof.

For example, the PUCCH1 and PUCCH3 resources in the figure overlap in time interval a shown in the figure, and assuming that the priority of the second HARQ-ACK is higher than that of the first HARQ-ACK, in the case that the third PUCCH where the third HARQ-ACK is located overlaps with the first PUCCH time domain resource where the first HARQ-ACK is located, if the multiplexing time requirement is met, the third HARQ-ACK and the first HARQ-ACK are multiplexed on one PUCCH for transmission.

Discarding one of the first HARQ-ACK and the third HARQ-ACK having a lower priority if a multiplexing time requirement is not satisfied.

Specifically, if the third HARQ-ACK is considered to have a lower priority than the first HARQ-ACK and does not satisfy the multiplexing time requirement, the third HARQ-ACK is discarded. And if the priority of the third HARQ-ACK is higher than that of the first HARQ-ACK and the multiplexing time requirement is not met, discarding the first HARQ-ACK. And if the priority of the third HARQ-ACK is considered to be the same as that of the first HARQ-ACK, and the third HARQ-ACK and the first HARQ-ACK do not meet the multiplexing time requirement, the system reports an error.

In particular, the above procedure is mainly applicable to the case where the UE configures the dedicated PUCCH resource. In addition, when the UE has no dedicated PUCCH resource allocation, HARQ-ACK of the physical downlink channel scheduled by the downlink control information DCI of the specific format may be fed back according to the slot level. The specific process is similar to steps S404-406 and will not be described again.

Therefore, the embodiment of the present invention provides a method for feeding back an acknowledgement of a hybrid automatic repeat request, which determines a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first HARQ-ACK or a second time granularity for feeding back a second HARQ-ACK of the terminal device, where the third HARQ-ACK is an HARQ-ACK of a physical downlink channel scheduled by DCI of a specific format; and feeding back the third HARQ-ACK according to the third time granularity, wherein the HARQ-ACK can be effectively fed back when the UE receives a PDCCH released by a PDSCH/SPS PDSCH scheduled by a specific DCI (e.g., DCI format 1_0) under the condition that the UE configures HARQ-ACK feedback of at least 1sub-slot level, thereby improving the effectiveness of the mobile communication system.

A method for feeding back harq acknowledgements according to an embodiment of the present invention is described in detail above with reference to fig. 1 to 4. A terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 6.

Fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 6, the terminal apparatus 600 includes: a determination module 610 and a feedback module 620.

The determining module 610 is configured to determine a third time granularity for feeding back a third HARQ-ACK according to the first time granularity for feeding back the first HARQ-ACK or the second time granularity for feeding back the second HARQ-ACK of the terminal device, where the third HARQ-ACK is an HARQ-ACK of a physical downlink channel scheduled by DCI of a specific format. The feedback module 620 is configured to feed back the third HARQ-ACK according to the third time granularity.

In one implementation, the determining module 610 is configured to: determining the first time granularity or the second time granularity as the third time granularity when the first time granularity and the second time granularity are both sub-slot levels.

In one implementation, the DCI of the particular format is in a particular search space type.

In one implementation, the determining module 610 is configured to: the third temporal granularity is a slot level where the first and second temporal granularities are both sub-slot levels and the DCI of the particular format is in a common search space type.

In one implementation, the determining module 610 is configured to: the third time granularity is a time slot level if the first time granularity or the second time granularity is a time slot level.

In one implementation, the feedback module 620 is configured to: determining a target time slot or a target sub-time slot for feeding back the third HARQ-ACK according to the third time granularity and a timing indication K from a Physical Downlink Shared Channel (PDSCH) to the third HARQ-ACK; and feeding back the third HARQ-ACK through a third physical uplink control channel PUCCH resource corresponding to the target time slot or the target sub-time slot.

In one implementation, the feedback module 620 is further configured to: under the condition that the time domain resources of a third PUCCH where the third HARQ-ACK is located and a first PUCCH where the first HARQ-ACK is located are overlapped, if the multiplexing time requirement is met, multiplexing the third HARQ-ACK and the first HARQ-ACK on one PUCCH for transmission; wherein the second HARQ-ACK has a higher priority than the first HARQ-ACK.

In one implementation, the feedback module 620 is further configured to: discarding one of the first HARQ-ACK and the third HARQ-ACK having a lower priority if a multiplexing time requirement is not satisfied.

In one implementation, the DCI of the specific format is DCI format 1_ 0.

The terminal device 600 according to the embodiment of the present invention may refer to the process corresponding to the

method

100 and 400 according to the embodiment of the present invention, and each unit/module and the other operations and/or functions in the terminal device 600 are respectively for implementing the corresponding process in the

method

100 and 400, and can achieve the same or equivalent technical effects, and for brevity, no further description is provided herein.

Fig. 7 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 700 shown in fig. 7 includes: at least one processor 701, a memory 702, at least one network interface 704, and a user interface 703. The various components in the terminal device 700 are coupled together by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 7 as the bus system 705.

The user interface 703 may include, among other things, a display, a keyboard, a pointing device (e.g., a mouse, trackball), a touch pad, or a touch screen.

It is to be understood that the memory 702 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 702 of the systems and methods described in this embodiment of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 702 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 7021 and application programs 7022.

The operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 7022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the present invention can be included within application program 7022.

In this embodiment of the present invention, the terminal device 700 further includes: a computer program stored 702 in the memory and executable on the processor 701, the computer program, when executed by the processor 701, implementing the steps of the method 100-400 as follows.

The method disclosed in the above embodiments of the present invention may be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The Processor 701 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702, and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 701 implements the steps of the embodiments of the

method

100 and 400 as described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The terminal device 700 can implement each process implemented by the terminal device in the foregoing embodiments, and can achieve the same or equivalent technical effects, and for avoiding repetition, details are not described here.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the

method embodiments

100 and 400, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method of feeding back hybrid automatic repeat request acknowledgements, the method being performed by a terminal device, the method comprising:

determining a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first hybrid automatic repeat request acknowledgement (HARQ-ACK) or a second time granularity for feeding back a second HARQ-ACK of the terminal equipment, wherein the third HARQ-ACK is the HARQ-ACK of a physical downlink channel scheduled by Downlink Control Information (DCI) with a specific format;

feeding back the third HARQ-ACK according to the third time granularity;

determining a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first hybrid automatic repeat request acknowledgement (HARQ-ACK) or a second time granularity for feeding back a second HARQ-ACK of the terminal equipment, comprising:

determining the first time granularity or the second time granularity as the third time granularity under the condition that the first time granularity and the second time granularity are both in a sub-time slot level; or

The third time granularity is a time slot level if the first time granularity or the second time granularity is a time slot level.

2. The method of claim 1, wherein the DCI of the particular format is in a particular search space type.

3. The method of claim 1, wherein a third time granularity for feeding back a third HARQ-ACK is determined based on a first time granularity for feeding back a first hybrid automatic repeat request acknowledgement, HARQ, -ACK or a second time granularity for feeding back a second HARQ-ACK for the terminal device, further comprising:

the third temporal granularity is a slot level where the first and second temporal granularities are both sub-slot levels and the DCI of the particular format is in a common search space type.

4. The method of claim 1, wherein feeding back the third HARQ-ACK at the third time granularity comprises:

determining a target time slot or a target sub-time slot for feeding back the third HARQ-ACK according to the third time granularity and a timing indication K from the PDSCH to the HARQ-ACK indicated by the DCI with the specific format; and feeding back the third HARQ-ACK through a third physical uplink control channel PUCCH resource corresponding to the target time slot or the target sub-time slot.

5. The method of claim 1, wherein the method further comprises:

under the condition that the time domain resources of a third PUCCH where the third HARQ-ACK is located and a first PUCCH where the first HARQ-ACK is located are overlapped, if the multiplexing time requirement is met, multiplexing the third HARQ-ACK and the first HARQ-ACK on one PUCCH for transmission; and

wherein the second HARQ-ACK has a higher priority than the first HARQ-ACK.

6. The method of claim 5, wherein the method further comprises:

7. The method of claim 1, wherein the DCI of the particular format is DCI format 1_ 0.

8. A terminal device, comprising:

a determining module, configured to determine a third time granularity for feeding back a third HARQ-ACK according to a first time granularity for feeding back a first HARQ-ACK or a second time granularity for feeding back a second HARQ-ACK of the terminal device, where the third HARQ-ACK is an HARQ-ACK of a physical downlink channel scheduled by DCI of a specific format;

a feedback module, configured to feed back the third HARQ-ACK according to the third time granularity;

9. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of a method of feeding back hybrid automatic repeat request acknowledgements as claimed in any of claims 1 to 7.

10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of a method of feeding back hybrid automatic repeat request acknowledgements as claimed in any of the claims 1 to 7.