CN112970303A

CN112970303A - Transmission method, device and storage medium for hybrid automatic repeat request acknowledgement

Info

Publication number: CN112970303A
Application number: CN201980073842.0A
Authority: CN
Inventors: 徐婧; 林亚男
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2021-06-15
Anticipated expiration: 2039-04-30
Also published as: CN112970303B; WO2020220317A1

Abstract

A HARQ-ACK transmission method, device and storage medium for hybrid automatic repeat request confirmation, the method comprising: terminal equipment acquiring information of demodulation reference signal DMRS; terminal equipment according to the corresponding information of DMRS and downlink configuration index DAI relationship, determine the DAI corresponding to the information of the DMRS, and the DAI is used to indicate the information of the HARQ-ACK of the semi-persistently scheduled SPS transmission.

Description

Transmission method, device and storage medium for hybrid automatic repeat request acknowledgement

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a transmission method, device, and storage medium for Hybrid Automatic Repeat request Acknowledgement (HARQ-ACK).

Background

In a New Radio (NR) system, for Semi-Persistent scheduling (SPS), how a terminal device transmits HARQ-ACK of SPS needs to avoid invalid HARQ-ACK and improve transmission efficiency of Physical Uplink Control Channel (PUCCH), which is an urgent problem to be solved.

Disclosure of Invention

In order to solve the above technical problem, embodiments of the present invention provide a method, an apparatus, and a storage medium for transmitting HARQ-ACK, which can avoid a terminal device from sending invalid HARQ-ACK, and improve the transmission efficiency of PUCCH and the reliability of PDCCH transmission.

In a first aspect, an embodiment of the present invention provides a method for transmitting HARQ-ACK, including: the method comprises the steps that terminal equipment acquires information of a Demodulation Reference Signal (DMRS), and determines a DAI corresponding to the information of the DMRS according to a corresponding relation between the information of the DMRS and a Downlink Assignment Index (DAI), wherein the DAI is used for indicating HARQ-ACK information transmitted by Semi-persistent scheduling (SPS).

In a second aspect, an embodiment of the present invention provides a method for transmitting HARQ-ACK, including: the network equipment sends the corresponding relation between the DMRS information and the DAI; the DMRS information is one or more, and the DAI is used for indicating the HARQ-ACK information of SPS transmission; and the network equipment receives HARQ-ACK which is sent by the terminal equipment and aims at the SPS transmission.

In a third aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes: and the processing unit is configured to determine a corresponding relation between the DMRS information and the DAI, wherein the corresponding relation between the DMRS information and the DAI is used for the terminal equipment to determine the DAI, and the DAI is used for indicating the HARQ-ACK information of SPS transmission.

In a fourth aspect, an embodiment of the present invention provides a network device, where the network device includes: and the second sending unit is configured to send the corresponding relation between the DMRS information and the DAI, wherein the corresponding relation between the DMRS information and the DAI is used for the terminal equipment to determine the DAI, and the DAI is used for indicating the HARQ-ACK information of the SPS transmission.

In a fifth aspect, an embodiment of the present invention provides a terminal device, including a processor and a memory, where the memory is used for storing a computer program that can be executed on the processor, and the processor is configured to execute, when executing the computer program, the steps of the HARQ-ACK transmission method executed by the terminal device.

In a sixth aspect, an embodiment of the present invention provides a network device, including a processor and a memory, where the memory is used for storing a computer program that can be executed on the processor, and the processor is configured to execute the steps of the HARQ-ACK transmission method executed by the network device when the processor executes the computer program.

In a seventh aspect, an embodiment of the present invention provides a storage medium, where an executable program is stored, and when the executable program is executed by a processor, the method for transmitting HARQ-ACK performed by the terminal device is implemented.

In an eighth aspect, an embodiment of the present invention provides a storage medium, where an executable program is stored, and when the executable program is executed by a processor, the method for transmitting HARQ-ACK performed by the network device is implemented.

The HARQ-ACK transmission method provided by the embodiment of the invention comprises the following steps: the method comprises the steps that terminal equipment determines the corresponding relation between DMRS information and a DAI, the corresponding relation between the DMRS information and the DAI is used for the terminal equipment to determine the DAI, and the DAI is used for indicating the HARQ-ACK information of semi-persistent scheduling SPS transmission. Through the corresponding relation between the DMRS information and the DAI, the terminal equipment can acquire the DAI, so that the HARQ-ACK of SPS transmission can adopt a dynamic HARQ-ACK codebook mechanism, invalid HARQ-ACK is avoided, the resource without SPS transmission cannot be fed back, and the transmission efficiency of the PUCCH is improved.

Drawings

FIG. 1 is a diagram illustrating HARQ-ACK multiplexing of SPS transmissions and HARQ-ACK multiplexing of dynamic transmissions according to a first embodiment of the present invention;

FIG. 2 is a diagram illustrating HARQ-ACK multiplexing of SPS transmission and HARQ-ACK multiplexing of dynamic transmission according to a second embodiment of the present invention;

FIG. 3 is a block diagram of a communication system according to an embodiment of the present invention;

fig. 4 is a schematic view of an alternative processing flow of a transmission method of HARQ-ACK according to an embodiment of the present invention;

FIG. 5 is a diagram of HARQ-ACK transmission of SPS transmissions by a terminal device according to an embodiment of the present invention;

fig. 6 is a schematic view of another alternative processing flow of a transmission method of HARQ-ACK according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a feedback window based on a HARQ-ACK codebook mechanism for slot n feedback according to an embodiment of the present invention;

FIG. 8 is a diagram of HARQ-ACK for SPS transmission sent by a terminal device according to an embodiment of the present invention;

FIG. 9 is a diagram of HARQ-ACK transmission of SPS transmissions and HARQ-ACK cascaded transmissions of dynamic transmissions in accordance with an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a network device according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a hardware component structure of an electronic device according to an embodiment of the present invention.

Detailed Description

So that the manner in which the features and technical contents of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the present invention will be rendered by reference to the appended drawings, which are included for purposes of illustration and not limitation.

Before explaining the HARQ-ACK transmission method provided by the embodiment of the present invention in detail, a brief explanation is first given to the HARQ-ACK transmission method for SPS transmission in the related art.

In the related art, HARQ-ACK of the NR system is transmitted in a Multiplexing (Multiplexing) manner, that is, one or more downlink HARQ-ACKs are transmitted in a Physical Uplink Control Channel (PUCCH) resource. The Multiplexing mode transmits HARQ-ACK, which not only can improve the efficiency of uplink control information transmission, but also can support flexible uplink and downlink resource proportion and flexible feedback time sequence.

HARQ-ACK and timing of SPS transmission are semi-statically configured, and when the HARQ-ACK of SPS transmission and the HARQ-ACK of dynamic transmission occur in the same time unit, Multiplexing will occur on the HARQ-ACK of SPS transmission and the HARQ-ACK of dynamic transmission; wherein, the time unit can be a time slot, or a sub-time slot, or a symbol, etc.; the time units may be agreed upon by a protocol or configured by the network device. The multiplexing diagram of the HARQ-ACK of the SPS transmission and the HARQ-ACK of the dynamic transmission is shown as I, as shown in FIG. 1, the HARQ-ACK comprises two parts, the first part is the HARQ-ACK of the dynamic transmission, and the feedback content depends on the HARQ-ACK feedback mode and the feedback window of the dynamic transmission; wherein, the HARQ-ACK feedback mode of the dynamic transmission is Semi-static (Semi-static) HARQ-ACK or dynamic (dynamic) HARQ-ACK codebook (codebook). Fig. 1 is a feedback example of the dynamic HARQ-ACK codebook mechanism, only for the transmission of DAI or total (total) DAI indication within the feedback window. The second part is HARQ-ACK of SPS transmission, and the feedback format is HARQ-ACK of all SPS transmission opportunities in a feedback window. Wherein, the feedback window is determined by a dynamically transmitted physical downlink control channel and a hybrid automatic repeat request acknowledgement feedback timer (PDSCH-to-HARQ-ACK feedback timing) set. Here, the PDSCH-to-HARQ-ACK feedback timing set refers to a set of configurable PDSCH-to-HARQ-ACK feedback timing values, and the PDSCH-to-HARQ-ACK feedback timing is a timing difference between downlink transmission and uplink HARQ-ACK. In NR Rel15, the periodicity of SPS transmissions is 10ms, i.e., there is one SPS transmission opportunity every 10 ms; a downlink transmission window corresponding to a typical HARQ-ACK codebook is 8 slots (slots), which are even shorter than 8 slots; thus, a feedback window contains at most one SPS transmission. In NR Rel16, the period of SPS transmission can be shortened to 2 symbols, and when the feedback window is 8 slots, HARQ-ACK for SPS transmission is multiplexed with HARQ-ACK for dynamic transmission, as shown in fig. 2, the hatched portion filled with oblique lines indicates one SPS transmission, and HARQ-ACK for SPS transmission requires 56 bits. The explosion in the number of HARQ-ACKs will affect the reliability of PUCCH transmissions, even for power limited terminal devices that cannot transmit such a large amount of information.

In the related art, the SPS resources may be configured in a semi-static manner, and whether to use the SPS resources is determined according to a service condition. Therefore, when SPS resources are not used, idle SPS resources may occur, which do not require HARQ-ACK. Therefore, not only can the waste of PUCCH resources be caused, but also the reliability of the limited HARQ-ACK can be influenced due to the overlarge information carrying quantity.

For dynamic transmission, HARQ-ACK can be transmitted in a dynamic HARQ-ACK codebook mode to avoid redundant feedback; wherein, the DAI is carried by Downlink Control Information (DCI). For SPS transmission, because no dynamic scheduling signaling DCI exists, HARQ-ACK cannot be transmitted in a dynamic HARQ-ACK codebook mode.

Based on the above problem, the present invention provides a transmission method of HARQ-ACK, and the transmission method of HARQ-ACK of the embodiments of the present application may be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 3. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 3 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 3 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

An optional processing flow of the HARQ-ACK transmission method provided in the embodiment of the present invention, as shown in fig. 4, includes the following steps:

step S201, the terminal equipment acquires the DMRS information.

In some embodiments, the information of the DMRS includes at least one of a port of the DMRS, a pattern (pattern) of the DMRS, and a sequence of the DMRS.

And step S202, the terminal equipment determines the DAI corresponding to the information of the DMRS according to the corresponding relation between the information of the DMRS and the DAI.

In the embodiment of the invention, the DAI is used for representing the information of HARQ-ACK transmitted by semi-persistent scheduling SPS by the terminal equipment.

In the embodiment of the present invention, the correspondence between the DMRS information and the DAI includes: a correspondence of at least one of a port of the DMRS, a pattern of the DMRS, and a sequence of the DMRS with the DAI. Such as: the correspondence between the port of the DMRS and the DAI, the correspondence between the pattern of the DMRS and the DAI, the correspondence between the sequence of the DMRS and the DAI, the correspondence between the pattern of the DMRS and the port of the DMRS and the DAI, the correspondence between the sequence of the DMRS and the port of the DMRS and the DAI, or the correspondence between the sequence of the DMRS and the pattern of the DMRS and the DAI, and the like.

Taking the correspondence relationship between the port of the DMRS and the DAI as an example, the DAI corresponding to the DMRS port a is 0, the DAI corresponding to the DMRS port a +2 is 1, the DAI corresponding to the DMRS port a +4 is 2, and the DAI corresponding to the DMRS port a +6 is 3. Wherein the DAI is used to indicate a sequence number of the SPS transmission. DAI-0 denotes the first SPS transmission, DAI-1 denotes the second SPS transmission, DAI-2 denotes the third SPS transmission, and DAI-3 denotes the fourth SPS transmission. In addition, the DAI may also be used cyclically, for example, DAI-0 indicates the first SPS transmission, DAI-1 indicates the second SPS transmission, DAI-2 indicates the third SPS transmission, DAI-3 indicates the fourth SPS transmission, and DAI-0 indicates the fifth SPS transmission …. When there are five SPS transmissions, the probability that the terminal device detects only the fifth SPS transmission is very low, and therefore, even if the fifth SPS transmission and the first SPS transmission are both represented by DAI ═ 0, the fifth SPS transmission and the first SPS transmission are not confused. In an alternative embodiment, the SPS transmission is an SPS PDSCH transmission.

Taking the correspondence relationship between patterns and DAIs of DMRSs as an example, the DAI ═ 0 corresponds to DMRS pattern1 (first column symbol), the DAI ═ 1 corresponds to DMRS pattern2 (second column symbol), the DAI ═ 2 corresponds to DMRS pattern3 (third column symbol), and the DAI ═ 3 corresponds to DMRS pattern4 (fourth column symbol).

Taking the correspondence relationship between the DMRS sequence and the DAI as an example, the DMRS sequence 1 corresponds to the DAI equal to 0, the DMRS sequence 2 corresponds to the DAI equal to 1, the DMRS sequence 3 corresponds to the DAI equal to 2, and the DMRS sequence 4 corresponds to the DAI equal to 3.

Taking the corresponding relation between the pattern of the DMRS and the port of the DMRS and the DAI as an example, the DMRS pattern1 (first column symbol) corresponds to the DAI of 0, and the DMRS port0 corresponds to the DAI of 0; DMRS pattern1 (first column symbol) corresponds to DAI ═ 1, and DMRS port1 corresponds to DAI ═ 1; DMRS pattern2 (second column symbol) corresponds to DAI ═ 2, and DMRS port0 corresponds to DAI ═ 2; DMRS pattern2 (second column symbol) corresponds to DAI ═ 3, and DMRS port1 corresponds to DAI ═ 3. The method comprises the steps of jointly indicating DAI through a pattern of the DMRS and a port of the DMRS, or jointly indicating DAI through the pattern of the DMRS and a sequence of the DMRS, or jointly indicating DAI through the port of the DMRS and the sequence of the DMRS, or jointly indicating DAI through the pattern of the DMRS, the sequence of the DMRS and the port of the DMRS, and the indicatable range of the DAI can be expanded; for example, only two correspondence relationships can be indicated by a port using a DMRS, and four correspondence relationships can be indicated when a DAI is jointly indicated by a port using a DMRS and a pattern of the DMRS.

In some embodiments, the correspondence between the DMRS information and the DAI is configured by the network device and sent to the terminal device by the network device. Or, the corresponding relation between the information of the DMRS and the DAI is agreed by a protocol.

In the embodiment of the present invention, the correspondence between the DMRS information and the DAI includes: the DMRS information corresponds to a value of a DAI; or a value of a DAI corresponding to information of the initial DMRS, and a difference between information of two adjacent DMRSs. Wherein, the corresponding relation is as follows: under the condition that the DMRS information corresponds to one DAI value, the DAI value can be directly determined according to the acquired DMRS information; taking the information of the DMRS as the DMRS port as an example, DMRS port0 corresponds to DAI ═ 0, DMRS port1 corresponds to DAI ═ 1, DMRS port 2 corresponds to DAI ═ 2, and so on. The corresponding relation is as follows: under the condition of the value of the DAI corresponding to the information of the initial DMRS and the difference between the information of the two adjacent DMRSs, the terminal device further needs to obtain the information of the initial DMRS through DCI (such as SPS activation signaling), so that the value of the information of the initial DMRS and the value of the corresponding DAI can be determined, and then the value of the DAI corresponding to the obtained information of the DMRS is determined according to the difference between the information of the two adjacent DMRSs. It should be noted that the values of the DAIs corresponding to two adjacent SPS transmissions are sequentially increased; for example, the DAI value for the first SPS transmission is 0, and the DAI value for the second SPS transmission is 1; alternatively, the first SPS transmission may correspond to a DAI value of 1 and the second SPS transmission may correspond to a DAI value of 2. In the following, the information of the DMRS is taken as an example of a port of the DMRS, the port of the initial DMRS is DMRS port0, the corresponding DAI is 0, the preset value is 2, the DAI corresponding to DMRS port 2 is 1, the DAI corresponding to DMRS port 4 is 2, the DAI corresponding to DMRS port 6 is 3, and so on.

In the above embodiment, the correspondence between the DMRS information and the DAI is as follows: and when the DAI value corresponding to the information of the initial DMRS and the difference value between the information of two adjacent DMRSs are obtained, the corresponding relation between the information of the DMRS and the DAI is agreed by a protocol. The corresponding relation between the DMRS information and the DAI is determined in a protocol appointed mode, and signaling overhead can be reduced.

And the information of the initial DMRS in the information of the DMRS is sent to the terminal equipment by the network equipment through the DCI. Wherein the information of the initial DMRS includes at least one of: an initial port of a DMRS, a first column of symbols of a pattern of the DMRS, and a first sequence of the DMRS.

In some embodiments, the method further comprises:

step S203, the terminal equipment sends HARQ-ACK of SPS transmission.

Wherein the SPS transmissions are transmissions corresponding to the determined DAI; if the DAI determined in step S202 is 1, the SPS transmission corresponds to the DAI-1. In particular implementation, if the terminal device determines that DAI is 0, that is, the current transmission is the first SPS transmission, the terminal device transmits HARQ-ACK for the first SPS transmission.

In some embodiments, the terminal device transmits a HARQ-ACK map for SPS transmissions, as shown in fig. 5: the terminal device does not transmit HARQ-ACK if the terminal device does not detect SPS transmissions within a first feedback window.

In other embodiments, as shown in fig. 5, the network device performs one SPS transmission within the second feedback window, the SPS transmission being shaded within the second feedback window; in the event that the terminal device detects only one SPS transmission within a second feedback window and the SPS transmission employs a first DMRS port, the terminal device transmits only one HARQ-ACK. If the first DMRS port is DMRS port0 and the corresponding DAI is 0, that is, the terminal device detects an SPS transmission in the second feedback window, the terminal device sends an HARQ-ACK to the network device.

In still other embodiments, as shown in fig. 5, the network device performs two SPS transmissions within the second feedback window, the two SPS transmissions being illustrated in phantom within the third feedback window; the terminal equipment adopts an occupation mode to send HARQ-ACK under the condition of missing detection of SPS transmission; wherein the omission is detected for SPS transmissions and is determined by a discontinuous DAI indication. For example, where the terminal device detects only one SPS transmission within the third feedback window and the SPS transmission employs the second DMRS port, the terminal device transmits one DTX and one HARQ-ACK. If the second DMRS port is DMRS port1, the network device sends a first SPS transmission at DMRS port0, and sends a second SPS transmission at DMRS port 1; at this time, if the terminal device detects only SPS transmission corresponding to DMRS port1, it indicates that the terminal device has missed detection of SPS transmission corresponding to DMRS port0, and at this time, HARQ-ACK of the SPS transmission missed detection adopts a DTX occupancy mode. Therefore, the omission of SPS transmission is determined by whether the DAI value received by the terminal device is continuous. When the value of the DAI is not continuous, the terminal device is indicated to miss detection of the SPS transmission. For example, when an SPS transmission with DAI-1 is detected, an SPS transmission with DAI-0 is considered to be missed. If the DAI corresponding to the SPS transmissions is equal to 0, 1,2, 3, 0, 1, respectively; when the terminal device detects an SPS transmission with DAI-3 and then detects an SPS transmission with DAI-0, although DAI-3 and DAI-0 are not continuous, DAI-3 and DAI-0 are not continuous due to DAI cyclic multiplexing; this case does not pertain to DAI discontinuities.

In the embodiment of the invention, the bit number of ARQ-ACK of SPS transmission is determined according to the DMRS port. When the number of the DMRS ports is 1, the bit number of ARQ-ACK transmitted by the SPS is 1; when the DMRS ports are 2, two SPS transmissions are indicated; the number of bits of ARQ-ACK of SPS transmissions sent by the terminal device to the network device is 2, one for each SPS transmission.

In the embodiment of the invention, after the terminal equipment acquires the DAI, the terminal equipment can send HARQ-ACK through a dynamic HARQ-ACK codebook mechanism; when the terminal equipment detects the SPS transmission, the HARQ-ACK of the SPS transmission is sent to the network equipment; when the SPS transmission is not detected, HARQ-ACK of the SPS transmission is not sent to the network equipment; therefore, invalid HARQ-ACK is avoided, and the transmission efficiency of the PUCCH and the reliability of PDCCH transmission are improved.

In the embodiment of the invention, the information of the HARQ-ACK of the SPS transmission indicated by the DAI indicates the sequence of the HARQ-ACK of each SPS transmission in all the HARQ-ACKs when at least one SPS transmission is available; for example, the HARQ-ACK of the first SPS transmission is in the first bit and the HARQ-ACK of the second SPS transmission is in the second bit. The ordering of the HARQ-ACK is decided entirely by the DAI, or part of the ordering of the HARQ-ACK is decided by the DAI. Part of the ordering for HARQ-ACK is illustrated by the DAI decision: when the SPS employs a 2-codeword transmission, the HARQ-ACK for the first SPS transmission (DAI ═ 0) is at the first and second bits, and the HARQ-ACK for the second SPS transmission (DAI ═ 1) is at the third and fourth bits. It can be seen that the HARQ-ACK order is decided according to the SPS transmission order (DAI indication), and the HARQ-ACK of each SPS transmission takes 2 bits.

In the above description of HARQ-ACK for SPS transmission, taking the simultaneous existence of SPS transmission and dynamic transmission as an example, the following alternative processing flow of the HARQ-ACK transmission method provided in the embodiment of the present invention is shown in fig. 6, and includes the following steps:

step S301, the network device configures feedback parameters of SPS transmission and HARQ-ACK feedback parameters of dynamic transmission.

Wherein the feedback parameters of the SPS transmissions comprise at least one of: and the corresponding relation between the SPS period parameters, the DMRS information and the DAI. And the SPS period parameter is used for the terminal equipment to detect the SPS transmission, and when the feedback parameter of the SPS transmission only comprises the SPS period parameter, the terminal equipment determines the corresponding relation between the information of the DMRS and the DAI through protocol convention. It can be understood that, in the embodiment of the present invention, the terminal device needs to acquire the correspondence between the DMRS information and the DAI. For example, for low latency traffic, the network device configures SPS resources for 2 symbol (symbol) periods; the corresponding relation between the DMRS information and the DAI is as follows: DMRS port a corresponds to DAI ═ 0, DMRS port a +2 corresponds to DAI ═ 1, DMRS port a +4 corresponds to DAI ═ 2, and DMRS port a +6 corresponds to DAI ═ 3.

And the dynamically transmitted HARQ-ACK feedback parameters are used for determining HARQ-ACK codebook, and the dynamically transmitted HARQ-ACK feedback parameters at least comprise a feedback mode and a PDSCH-to-HARQ-ACK timing set. Wherein the feedback mode comprises: dynamic HARQ-ACK codebook and semi-static HARQ-ACK codebook.

The dynamic HARQ-ACK codebook feedback mode only releases feedback for the transmission of the DAI identification and the SPS PDSCH transmission within the feedback window. semi-static HARQ-ACK feeds back all non-overlapping transmission opportunities within the feedback window, and for the case of no data transmission, DTX occupancy is employed.

Besides configuring the value range of the PDSCH-to-HARQ-ACK timing, the PDSCH-to-HARQ-ACK timing set can also be used for determining an HARQ-ACK feedback window. For example, if the PDSCH-to-HARQ-ACK timing set configured for dynamic transmission by the network device is {1,2, 3, 4, 5, 6, 7, 8}, then a feedback window diagram based on the HARQ-ACK codebook mechanism is fed back at slot n, as shown in fig. 7: the HARQ-ACK feedback window for SPS transmissions fed back at time slot n and the HARQ-ACK feedback window for dynamic transmissions fed back at time slot n are both { n-8, n-7, … n-1 }.

Step S302, the network device sends the feedback parameter of SPS transmission and the HARQ-ACK feedback parameter of dynamic transmission to the terminal device.

In step S303, the network device activates SPS transmission through SPS activation signaling.

Wherein, the SPS activation signaling at least comprises PDSCH-to-HARQ-ACK timing which is a parameter of SPS transmission. For example, the PDSCH-to-HARQ-ACK feedback timing is {1 }. The network device transmits data in the time slot m and the network device detects HARQ-ACKs corresponding to all SPS transmissions in the time slot m + 1. For another example, if the terminal device sends HARQ-ACK for dynamic transmission on slot m +1, the terminal device also sends HARQ-ACK for all dynamic HARQ-ACK codebooks or Semi-static HARQ-ACK codebooks for slot m-7, m-6, … m on slot m +1, and sends HARQ-ACK for all SPS transmissions for slot m-7, m-6, … m on slot m + 1.

Step S304, the terminal equipment receives the SPS activation signaling and detects data on the corresponding SPS resource.

Step S305, the terminal equipment sends HARQ-ACK.

In some embodiments, if slot m + x has only HARQ-ACK for SPS transmission, and no HARQ-ACK for dynamic transmission, the feedback window size is 1slot, i.e., HARQ-ACK corresponding to SPS transmission in feedback slot m; wherein, the number of times of SPS transmission is indicated by DMRS port. The terminal device sends HARQ-ACK for SPS transmission schematically, as shown in fig. 8, if the terminal device does not detect SPS transmission within the first feedback window, HARQ-ACK is not fed back. And if the terminal equipment only detects one SPS transmission in the second feedback window, and the SPS transmission adopts DMRS port0, the terminal equipment determines that only one SPS transmission exists in the second feedback window according to the corresponding relation between the DMRS port and the DAI, and the terminal equipment feeds back one HARQ-ACK. If the terminal equipment only detects one SPS transmission in the third feedback window, but the SPS transmission adopts DMRS port1, and the terminal considers that the detected SPS transmission is the second SPS transmission in the third feedback window according to the corresponding relation between the DMRS port and the DAI; and missed detection of SPS transmissions corresponding to DMRS port 0; therefore, the terminal equipment sends { DTX, ACK } to the network equipment; wherein DTX is an override and corresponds to a first undetected SPS transmission and ACK corresponds to a second SPS transmission.

In other embodiments, if there are dynamically transmitted HARQ-ACKs and SPS transmitted HARQ-ACKs in slot m + x, the dynamically transmitted HARQ-ACKs and SPS transmitted HARQ-ACKs are multiplexed, as shown in the upper right corner of fig. 8, where the first part (4 bits) of the feedback information is dynamically transmitted HARQ-ACKs and the feedback content is determined according to the dynamically transmitted HARQ-ACK feedback mode and the feedback window. As an example, fig. 8 illustrates that the HARQ-ACK feedback mode of the dynamic transmission is a dynamic HARQ-ACK codebook mechanism, and feedback is performed only for the dynamic transmission indicated by the DAI. The second part (2 bits) of the feedback information is the HARQ-ACK of the SPS transmission, i.e. within the feedback window. The bit number of the HARQ-ACK of the SPS transmission and the bit position of the HARQ-ACK of each SPS transmission are determined by the DMRS port. For example, if the terminal detects 2 SPS transmissions and the two SPS transmissions sequentially use DMRS port0 and DMRS port1, the terminal device feeds back 2-bit information to the network device for the SPS transmissions, where the 2-bit information corresponds to the first SPS transmission and the second SPS transmission, respectively.

In still other embodiments, if the time slot m + x has the HARQ-ACK for the dynamic transmission and the HARQ-ACK for the SPS transmission, and the HARQ-ACK for the dynamic transmission and the HARQ-ACK for the SPS transmission are in the same time unit (time slot), the HARQ-ACK feedback window for the SPS transmission is the same as the HARQ-ACK feedback window for the dynamic transmission, and both the HARQ-ACK for the SPS transmission and the HARQ-ACK for the dynamic transmission use a dynamic HARQ-ACK codebook mechanism, the HARQ-ACK for the SPS transmission and the HARQ-ACK for the dynamic transmission are transmitted in a cascade. Under the condition that the HARQ-ACK of the SPS transmission and the HARQ-ACK of the dynamic transmission are sent in a cascading mode, a DAI counting window of the SPS transmission is determined by the HARQ-ACK codebook of the dynamic transmission; or, the DAI counting window of the SPS transmission is determined by the time unit where the HARQ-ACK of the SPS transmission is located, that is, the downlink transmission corresponding to the HARQ-ACK in the same time unit belongs to the same DAI counting window. As shown in fig. 9, the HARQ-ACK feedback window for SPS transmissions is 8 slots; the first part (4 bits) of the feedback information shown in the upper right corner of fig. 9 is HARQ-ACK for dynamic transmission, and the second part (5 bits) of the feedback information is HARQ-ACK for SPS transmission. By means of cascading transmission of the HARQ-ACK transmitted by the SPS and the HARQ-ACK transmitted dynamically, the HARQ-ACK feedback window of SPS transmission can be enlarged, HARQ-ACK multiplexing is facilitated, and transmission efficiency of PUCCH is improved.

In the embodiment of the invention, the terminal equipment can acquire the DAI through the corresponding relation between the information of the DMRS and the DAI, so that the HARQ-ACK transmitted by the SPS can be transmitted by adopting a dynamic HARQ-ACK codebook mechanism, and the invalid HARQ-ACK is avoided. Because the dynamic HARQ-ACK codebook mechanism is adopted to send the HARQ-ACK of the SPS transmission, the resource without the SPS transmission cannot be fed back, and the transmission efficiency of the PUCCH is improved.

In order to implement the foregoing HARQ-ACK transmission method, an embodiment of the present invention further provides a terminal device, and a structure of the terminal device 400 is as shown in fig. 10, where the structure includes:

an obtaining unit 401 configured to obtain information of a DMRS;

a processing unit 402, configured to determine, according to a correspondence between the information of the DMRS and a DAI, a DAI corresponding to the information of the DMRS, where the DAI is used to indicate HARQ-ACK information of SPS transmission.

In the embodiment of the present invention, the correspondence between the DMRS information and the DAI includes: a correspondence of at least one of a port of the DMRS, a pattern of the DMRS, and a sequence of the DMRS with the DAI. The corresponding relation between the information of the DMRS and the DAI is sent to the terminal equipment by network equipment; or, the corresponding relation between the DMRS information and the DAI is agreed by a protocol and stored in the terminal device.

In the embodiment of the present invention, the correspondence between the DMRS information and the DAI includes: the DMRS information corresponds to a value of a DAI; or a value of a DAI corresponding to information of the initial DMRS, and a difference between information of two adjacent DMRSs.

In this embodiment of the present invention, the terminal device 400 further includes:

a first receiving unit 403 configured to receive information of the initial DMRS through DCI.

a first transmitting unit 404 configured to not transmit a HARQ-ACK if no SPS transmissions are detected within the first feedback window.

In this embodiment of the present invention, the first sending unit 404 is configured to send, according to the determined DAI, HARQ-ACK for SPS transmission when the terminal device detects SPS transmission, where the SPS transmission corresponds to the determined DAI.

In this embodiment of the present invention, the first sending unit 404 is configured to determine the ordering of HARQ-ACKs of SPS transmissions according to a DAI.

In this embodiment of the present invention, the first sending unit 404 is configured to send HARQ-ACK in an occupancy manner when the processing unit fails to detect SPS transmission.

In the embodiment of the invention, the bit number of the HARQ-ACK of the SPS transmission is determined according to the port of the DMRS.

In the embodiment of the invention, the terminal equipment also receives the feedback parameter of the HARQ-ACK which is dynamically transmitted, and the feedback parameter of the HARQ-ACK which is dynamically transmitted is used for determining the HARQ-ACK codebook.

In this embodiment of the present invention, under the condition that the HARQ-ACK for SPS transmission and the HARQ-ACK for dynamic transmission are in the same time unit, the processing unit 402 is configured to cascade the HARQ-ACK for SPS transmission and the HARQ-ACK for dynamic transmission.

In the embodiment of the invention, the counting window of the DAI of the SPS transmission is determined by the HARQ-ACK codebook of the dynamic transmission; alternatively, the counting window of the DAI of the SPS transmission is determined by the time unit in which the HARQ-ACK of the SPS transmission is positioned.

In order to implement the transmission method of the HARQ-ACK acknowledgement, an embodiment of the present invention further provides a network device, and a structure of the network device 500 is as shown in fig. 11, where the structure includes:

a second transmitting unit 501, configured to transmit a correspondence between DMRS information and one or more DAIs, where the DAI is used to indicate HARQ-ACK information for semi-persistent scheduling SPS transmission;

a second receiving unit 502 configured to receive HARQ-ACK for the SPS transmission sent by the terminal device.

In the embodiment of the present invention, the correspondence between the DMRS placement information and the DAI includes: a correspondence of at least one of a port of the DMRS, a pattern of the DMRS, and a sequence of the DMRS with the DAI.

In this embodiment of the present invention, the information of the DMRS is multiple, and the correspondence between the information of the DMRS and the DAI includes: each DMRS information corresponds to a value of one DAI.

In this embodiment of the present invention, the second sending unit 501 is further configured to send the initial DMRS information through a downlink control signaling DCI when the correspondence between the DMRS information and the DAI is the second correspondence.

In this embodiment of the present invention, the second sending unit 501 is further configured to send initial DMRS information through DCI; and obtaining DAIs corresponding to other DMRS information except the initial DMRS information in the plurality of DMRS information by the terminal equipment according to the difference between the information of two adjacent DMRS and the DAI corresponding to the initial DMRS information.

It should be noted that the HARQ acknowledgement is not limited to HARQ-ACK, and may also be HARQ-NACK or HARQ-DTX in the embodiments of the present invention.

The embodiment of the present invention further provides a terminal device, which includes a processor and a memory for storing a computer program capable of being executed on the processor, wherein the processor is configured to execute the steps of the HARQ-ACK transmission method executed by the terminal device when the processor executes the computer program.

The embodiment of the present invention further provides a network device, which includes a processor and a memory for storing a computer program capable of being executed on the processor, wherein the processor is configured to execute the steps of the HARQ-ACK transmission method executed by the network device when the processor executes the computer program.

Fig. 12 is a schematic diagram of a hardware composition structure of electronic devices (a terminal device and a target network device) according to an embodiment of the present invention, where the electronic device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704. The various components in the electronic 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 12 as the bus system 705.

It will be appreciated that the memory 702 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. The non-volatile Memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), magnetic random access Memory (FRAM), Flash Memory (Flash Memory), magnetic surface Memory, optical Disc, or Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. 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 (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 702 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The memory 702 in embodiments of the present invention is used to store various types of data in support of the operation of the electronic device 700. Examples of such data include: any computer program for operating on electronic device 700, such as application 7022. Programs that implement methods in accordance with embodiments of the present invention can be included within application program 7022.

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), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 701 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 702, and the processor 701 may read the information in the memory 702 and perform the steps of the aforementioned methods in conjunction with its hardware.

In an exemplary embodiment, the electronic Device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, MPUs, or other electronic components for performing the foregoing methods.

The embodiment of the application also provides a storage medium for storing the computer program.

Optionally, the storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute corresponding processes in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the storage medium may be applied to a network device in the embodiment of the present application, and the computer program enables a computer to execute corresponding processes in each method in the embodiment of the present application, which is not described herein again for brevity.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims

PCT domestic application, the claims have been published.