CN112654094B - HARQ-ACK feedback method and terminal equipment - Google Patents

HARQ-ACK feedback method and terminal equipment Download PDF

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Publication number
CN112654094B
CN112654094B CN201910970176.2A CN201910970176A CN112654094B CN 112654094 B CN112654094 B CN 112654094B CN 201910970176 A CN201910970176 A CN 201910970176A CN 112654094 B CN112654094 B CN 112654094B
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pdsch
harq
ack
indication information
pdschs
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CN112654094A (en
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李娜
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to PCT/CN2020/118813 priority patent/WO2021068803A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a HARQ-ACK feedback method and terminal equipment, wherein the method comprises the following steps: receiving a first Physical Downlink Control Channel (PDCCH) from network equipment, wherein the first PDCCH is used for scheduling a first Physical Downlink Shared Channel (PDSCH), the first PDCCH comprises indication information, the indication information comprises a trigger domain, and the trigger domain is used for triggering HARQ-ACK feedback of the PDSCH of other scheduled same or different HARQ-ACK codebooks; and performing HARQ-ACK feedback on the first PDSCH and other PDSCHs according to the indication information. In this way, when the network device communicates with the terminal device under the hybrid service in the unlicensed spectrum, the terminal device may effectively perform HARQ-ACK feedback based on the indication of the network device, because whether HARQ-ACK feedback for other scheduled PDSCHs is triggered may be indicated by the trigger domain.

Description

HARQ-ACK feedback method and terminal equipment
Technical Field
The present invention relates to the field of communications, and in particular, to a HARQ-ACK feedback method and a terminal device.
Background
Generally, in the process of communicating with the network device, after the network device sends a Physical Downlink Shared Channel (PDSCH) or a Physical Downlink Control Channel (PDCCH) of a Semi-Persistent Scheduling (SPS) PDSCH to the terminal device, the terminal device needs to perform Hybrid Automatic Repeat request Acknowledgement (HARQ-ACK) feedback to the network device, so that the network device determines whether the terminal device receives the PDSCH or releases the PDCCH of the PDSCH.
As the unlicensed spectrum is used more and more frequently in future communication systems, and the types of services supported by the terminal device when communicating with the network device are more and more complex, the network device communicates with the terminal device more and more under a mixed service in the unlicensed spectrum. When the network device communicates with the terminal device under the hybrid service in the unlicensed spectrum, after the PDSCH is sent to the terminal device or the PDCCH for releasing the SPS PDSCH, the terminal device is also required to perform HARQ-ACK feedback. However, an effective method for enabling the terminal device to perform HARQ-ACK feedback under hybrid services in the unlicensed spectrum is still lacking.
Disclosure of Invention
The embodiment of the invention provides a HARQ-ACK feedback method and terminal equipment, and aims to solve the problem that the terminal equipment cannot effectively perform HARQ-ACK feedback to network equipment under hybrid services in an unauthorized frequency spectrum.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, a feedback method for HARQ-ACK is provided, including:
receiving a first Physical Downlink Control Channel (PDCCH) from network equipment, wherein the first PDCCH is used for scheduling a first Physical Downlink Shared Channel (PDSCH), the first PDCCH comprises indication information, the indication information comprises a trigger domain, the trigger domain is used for triggering HARQ-ACK feedback of other scheduled PDSCHs, and the other PDSCHs comprise PDSCHs corresponding to the same or different HARQ-ACK codebooks with the first PDSCH;
and performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information.
In a second aspect, a terminal device is provided, which includes:
a receiving module, configured to receive a first physical downlink control channel PDCCH from a network device, where the first PDCCH is used to schedule a first physical downlink shared channel PDSCH, the first PDCCH includes indication information, the indication information includes a trigger domain, the trigger domain is used to trigger HARQ-ACK feedback for other scheduled PDSCHs, and the other PDSCHs include PDSCHs corresponding to a same or different HARQ-ACK codebook as the first PDSCH;
and the feedback module is used for carrying out HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information.
In a third aspect, a terminal device is provided, the terminal device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method 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 the method according to the first aspect.
In the embodiment of the present invention, in the process of communication between a network device and a terminal device under a hybrid service in an unlicensed spectrum, when the network device sends a PDCCH to the terminal device, the network device may indicate a trigger field in the PDCCH, where the trigger field is used to trigger HARQ-ACK feedback for other scheduled PDSCHs, and the other PDSCHs include PDSCHs corresponding to a same or different HARQ-ACK codebook as a currently scheduled PDSCH, and after receiving the PDCCH from the network device, the terminal device may perform HARQ-ACK feedback for the currently scheduled PDSCH and other scheduled PDSCHs according to an indication from the network device. In this way, since the network device may indicate to the terminal device whether to trigger HARQ-ACK feedback for other scheduled PDSCHs through the trigger field, the terminal device may effectively perform HARQ-ACK feedback to the network device based on the indication of the network device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flow chart of a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 2 is a diagram illustrating a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 3 is a diagram illustrating a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 5 is a diagram illustrating a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 7 is a diagram illustrating a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 8 is a diagram illustrating a feedback method of HARQ-ACK according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a terminal device according to 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.
Detailed Description
Generally, in the process of communication between a terminal device and a network device, after the network device sends a PDSCH to the terminal device, the terminal device needs to perform HARQ-ACK feedback to the network device, so that the network device can confirm whether the terminal device receives the PDSCH.
In a typical application scenario, when a terminal device and a network device communicate in an unlicensed spectrum, and the terminal device performs HARQ-ACK feedback to the network device, because the network device may feed back HARQ-ACK to the network device only when a channel state is idle, in order to avoid a problem that HARQ-ACK cannot be fed back to the network device due to a busy channel state, a feedback mechanism for triggering feedback may be adopted, and the mechanism may indicate which PDSCH group (i.e., PDSCH group) the currently scheduled PDSCH belongs to in a PDCCH for scheduling the PDSCH, and trigger a corresponding PDSCH group to feed back HARQ-ACK through the PDCCH.
In another typical application scenario, when the terminal device and the network device communicate in a hybrid service, considering different requirements of different service types, the terminal device may construct a plurality of HARQ-ACK codebooks (i.e., HARQ-ACK-codebooks) simultaneously for the different service types, the plurality of HARQ-ACK codebooks are independent of each other, one HARQ-ACK codebook may correspond to one service type, and include different PDSCH groups, and a PDSCH belonging to one HARQ-ACK codebook may perform HARQ-ACK feedback through one PUCCH.
However, when the terminal device and the network device communicate in a hybrid service in an unlicensed spectrum, that is, in an application scenario where the terminal device operates in an unlicensed frequency band and simultaneously supports multiple different service types, the terminal device cannot effectively perform HARQ-ACK feedback to the network device at present.
In view of this, an embodiment of the present invention provides a HARQ-ACK feedback method and a terminal device, where the method includes: receiving a first Physical Downlink Control Channel (PDCCH) from network equipment, wherein the first PDCCH comprises indication information, the indication information comprises a trigger domain and a PDSCH group indication domain corresponding to a first PDSCH scheduled by the first PDCCH, the trigger domain is used for triggering HARQ-ACK feedback of other scheduled PDSCHs, and the other PDSCHs comprise PDSCHs of the same PDSCH group or different PDSCH groups under the same or different HARQ-ACK codebook corresponding to the first PDSCH; and performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information.
In this way, since the network device may indicate to the terminal device whether to trigger HARQ-ACK feedback for other scheduled PDSCHs, the terminal device may effectively perform HARQ-ACK feedback to the network device based on the indication of the network device.
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, 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.
The technical scheme of the invention can be applied to various communication systems, such as: long Term Evolution (LTE), Long Term Evolution enhanced Long Term Evolution (LTE-a), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS) or Worldwide Interoperability for Microwave access (WiMAX), 5G, or New Radio (NR) systems, etc.
The Terminal device may be understood as a User Equipment (UE), which may also be referred to as a Mobile Terminal (Mobile Terminal), a Mobile User Equipment, and the like, and may communicate with one or more core networks via a Radio Access Network (RAN, for example), and the Terminal device may be a Mobile Terminal, such as a Mobile phone (or a "cellular" phone) and a computer having the Mobile Terminal, such as a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile device, and may also be an airborne device, such as an unmanned aerial vehicle, an aircraft, and the like, and exchanges words and/or data with the Radio Access Network.
The network device may be understood as a core network, or may also be understood as a Base Station, where the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (eNB or e-NodeB) and a 5G Base Station (gNB) in LTE, and a network side device in a subsequent evolved communication system.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a feedback method for HARQ-ACK according to an embodiment of the present invention, where the method may be executed by an electronic device, for example, a terminal device. In other words, the method may be performed by software or hardware installed in the terminal device. As shown, the method may include the steps of:
s102: receiving a first Physical Downlink Control Channel (PDCCH) from network equipment, wherein the first PDCCH is used for scheduling a first Physical Downlink Shared Channel (PDSCH), the first PDCCH comprises indication information, the indication information comprises a trigger domain, the trigger domain is used for triggering HARQ-ACK feedback of other scheduled PDSCHs, and the other PDSCHs comprise PDSCHs corresponding to the same or different HARQ-ACK codebooks with the first PDSCH.
In S102, under the mixed service in the unlicensed spectrum, the network device may send a Physical Downlink Control Channel (PDCCH) to the terminal device, where the PDCCH may be represented by the first PDCCH for convenience of distinguishing.
In this embodiment of the present invention, the first PDCCH may be used to schedule a Physical Downlink Shared Channel (PDSCH), and here, for convenience of distinction, may be represented by the first PDSCH. Indication information may be included in the first PDCCH, and at least a trigger field may be included in the indication information, and the trigger field may be used to trigger HARQ-ACK feedback for other scheduled PDSCHs.
It should be noted that, in the embodiment of the present invention, the terminal device may configure and construct more than one HARQ-ACK codebook (i.e., HARQ-ACK-codebook) at the same time, where one HARQ-ACK codebook may correspond to one PDSCH group (i.e., PDSCH groups under the same HARQ-ACK codebook are not distinguished), or may correspond to multiple PDSCH groups (i.e., PDSCH groups under the same HARQ-ACK codebook are distinguished to be different), one PDSCH group may correspond to multiple PDSCHs, and one HARQ-ACK codebook may correspond to one service Type, where the service Type may be enhanced Mobile Broadband (eMBB, enhanced Mobile Broadband), or Ultra-high Reliable Ultra-Low Latency Communication (URLLC), or may be large-scale internet of things (mtc, large-scale Machine Type of Communication), and the like.
It should be further noted that, one HARQ-ACK codebook may correspond to one service type only for a typical case, in actual operation, the HARQ-ACK codebook corresponding to the HARQ-ACK for one PDSCH depends on the indication of the network device, and the network device may not indicate the service type, in which case, the terminal device may not need to care whether one HARQ-ACK codebook corresponds to one service type.
In this way, since the terminal device may configure to construct multiple HARQ-ACK codebooks simultaneously, the other scheduled PDSCHs may include at least the following two PDSCHs: a PDSCH belonging to the same HARQ-ACK codebook as the first PDSCH, and a PDSCH belonging to a different HARQ-ACK codebook from the first PDSCH.
Further, since one HARQ-ACK codebook may correspond to one or more PDSCH groups, the other scheduled PDSCHs may include at least the following four PDSCHs:
a PDSCH belonging to the same HARQ-ACK codebook and the same PDSCH group as the first PDSCH, a PDSCH belonging to the same HARQ-ACK codebook and a different PDSCH group as the first PDSCH, a PDSCH belonging to a different HARQ-ACK codebook and the same PDSCH group as the first PDSCH, and a PDSCH belonging to a different HARQ-ACK codebook and a different PDSCH group as the first PDSCH.
It should be noted that, the same PDSCH group in the PDSCH belonging to the same PDSCH group and different HARQ-ACK codebooks as the first PDSCH refers to the same group number of the corresponding PDSCH or the same PDSCH group number in the respective HARQ-ACK codebooks, and does not refer to the same PDSCH group (because of belonging to different HARQ-ACK codebooks), and similarly, the PDSCH belonging to the same HARQ-ACK codebook as the first PDSCH and different PDSCH groups refers to the same group number of the corresponding PDSCH or the same PDSCH group number in the respective HARQ-ACK codebooks are different.
In this embodiment, under the condition that the terminal device configures and constructs a plurality of HARQ-ACK codebooks at the same time, when the network device sends the first PDCCH to the terminal device, the network device may further indicate to which HARQ-ACK codebook the HARQ-ACK of the first PDSCH scheduled by the first PDCCH belongs. Specifically, the network device may indicate to which HARQ-ACK codebook the HARQ-ACK for the first PDSCH belongs by at least one of: downlink Control Information format (DCI format), certain number of bits in DCI, Radio Network Temporary Identifier (RNTI), Control-Resource Set (core Set), and search space (search space).
In addition, when one HARQ-ACK codebook corresponds to multiple PDSCH groups, when the network device transmits the first PDCCH to the terminal device, the indication information of the first PDCCH may further include a PDSCH group indication field corresponding to the first PDSCH, where the PDSCH group indication field may be used to indicate to which PDSCH group the first PDSCH belongs.
After the network device sends the first PDCCH to the terminal device, the terminal device may receive the first PDCCH from the network device. If the network device indicates the HARQ-ACK codebook to which the first PDSCH belongs, the terminal device may further distinguish, in the physical layer, which HARQ-ACK codebook the first PDSCH belongs to when receiving the first PDCCH; if the network device indicates the PDSCH group to which the first PDSCH belongs, the terminal device may further determine, based on the indication, which PDSCH group the first PDSCH belongs to when receiving the first PDCCH.
For convenience of understanding, in the embodiment of the present invention, the network device may take the example of indicating the PDSCH group to which the first PDSCH belongs as an example for explanation, where the scheduled other PSDCH may include a PDSCH indicating the PDSCH group to which the first PDSCH belongs, or may include a PDSCH not indicating the PDSCH group to which the first PDSCH belongs.
S104: and performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information.
In S104, after receiving the first PDCCH from the network device, the terminal device may perform HARQ-ACK feedback on the first PDSCH scheduled by the first PDCCH and other scheduled PDSCHs according to the indication information in the first PDCCH.
It should be noted that, in S102, the first PDCCH issued by the network device may further include k1 (timing indication from the first PDSCH to HARQ-ACK feedback), and k1 is a numerical value (when k1 is the numerical value, it indicates that the network device instructs the terminal device to perform timing HARQ-ACK feedback on a PUCCH (indicated by the network device) corresponding to the first PDSCH, specifically, perform HARQ-ACK feedback on the first PDSCH after receiving k1 slots or sub-slots of the first PDSCH), so that when performing HARQ-ACK feedback on the first PDSCH and other PDSCHs, the terminal device may perform timing HARQ-ACK feedback on the PUCCH corresponding to the first PDSCH according to k 1.
In a first implementation:
first indication information for indicating whether to trigger HARQ-ACK feedback for the second PDSCH may be included in a trigger field of the indication information. The second PDSCH is one or more of other scheduled PDSCHs, and the second PDSCH corresponds to the same HARQ-ACK codebook and different PDSCH groups with the first PDSCH.
In this way, when the terminal device performs HARQ-ACK feedback on the first PDSCH, if the first indication information indicates that HARQ-ACK feedback on the second PDSCH is triggered, the terminal device will transmit HARQ-ACK of the first PDSCH and HARQ-ACK of the second PDSCH on a Physical Uplink Control Channel (PUCCH) corresponding to the first PDSCH. Wherein, the PUCCH corresponding to the first PDSCH may be determined by the indication of the first PDCCH.
Optionally, if the first indication information indicates that HARQ-ACK feedback for the second PDSCH is not triggered, the terminal device will not transmit HARQ-ACK for the second PDSCH on the PUCCH corresponding to the first PDSCH.
It should be noted that, under the condition that the trigger domain of the indication information only includes the first indication information, the bit number of the trigger domain is the same as the bit number of the trigger domain corresponding to the case that the terminal device only constructs one HARQ-ACK codebook, for example, when the PDSCH of one HARQ-ACK codebook is divided into 2 PDSCH groups, the trigger domain is 1bit and is used for triggering HARQ-ACK feedback of another PDSCH group except for the currently scheduled PDSCH.
For ease of understanding, reference may be made to fig. 2.
In fig. 2, the network device schedules PDSCH1 through PDCCH1 and instructs the terminal device to feed back HARQ-ACK1 of PDSCH1 on PUCCH1 corresponding to PDSCH1, and further instructs PDSCH1 to belong to HARQ-ACK codebook 0 (i.e., H ═ 0 in fig. 2) and PDSCH group 0 (i.e., G ═ 0 in fig. 2). Thereafter, when transmitting PUCCH1, the terminal device detects that the channel is busy, and therefore cannot transmit PUCCH1, that is, cannot transmit HARQ-ACK1 of PDSCH1 on PUCCH 1. As described above, the PDSCH1 belongs to the HARQ-ACK codebook 0, and the indication of the HARQ-ACK codebook, i.e., H, may be indicated by at least one of the DCI format corresponding to the PDCCH1, some bits in DCI, RNTI, CORESET, search space, and the like.
After that, the network device schedules PDSCH2 through PDCCH2 and instructs the terminal device to feed back HARQ-ACK2 of PDSCH2 on PUCCH2 corresponding to PDSCH2, and further, instructs PDSCH2 to belong to HARQ-ACK codebook 0 and PDSCH group 1, the trigger field contains 1bit (assuming that the HARQ-ACK codebook has two PDSCH groups), and is used to trigger HARQ-ACK feedback of PDSCH of a different PDSCH group whose domain and currently scheduled PDSCH belong to the same HARQ-ACK codebook, and instructs that HARQ-ACK feedback of PDSCH of another PDSCH group is triggered (i.e. T is 1 shown in fig. 2). After that, when performing HARQ-ACK feedback for PDSCH2, the terminal device transmits HARQ-ACK1 for PDSCH group 0(PDSCH1) and HARQ-ACK2 for PDSCH group 1(PDSCH2) on PUCCH 2.
Alternatively, if the PDCCH2 of fig. 2 indicates that HARQ-ACK feedback for PDSCH of another PDSCH group (i.e., PDSCH1) is not triggered, i.e., T ═ 0 as shown in fig. 2, the terminal device will not transmit HARQ-ACK1 for PDSCH group 0(PDSCH1) on PUCCH 2.
It should be noted that fig. 2 only illustrates one HARQ-ACK codebook constructed by the terminal device, and if the terminal device only constructs one HARQ-ACK codebook at the same time, the HARQ-ACK codebook indication H may not need to indicate. Under the condition that a terminal constructs a plurality of HARQ-ACK codebooks at the same time, the grouping of PDSCHs of different HARQ-ACK codebooks and the HARQ-ACK trigger transmission are carried out in each HARQ-ACK codebook without mutual influence.
In a second implementation:
the trigger field in the indication information may further include second indication information in addition to the first indication information, where the second indication information is used to indicate whether to trigger HARQ-ACK feedback for the third PDSCH. Wherein:
the third PDSCH is one or more PDSCHs in other scheduled PDSCHs, and the third PDSCH and the first PDSCH correspond to different HARQ-ACK codebooks and the same PDSCH group; or, the third PDCSH corresponds to a different HARQ-ACK codebook from the first PDSCH, and the third PDSCH includes PDSCHs in multiple PDSCH groups, where the multiple PDSCH groups may be all PDSCH groups in one HARQ-ACK codebook (in this case, it may also be considered that the PDSCHs in the HARQ-ACK codebook do not distinguish different PDSCH groups).
In this way, when the terminal device performs HARQ-ACK feedback on the first PDSCH, if the second indication information indicates that HARQ-ACK feedback on the third PDSCH is triggered, the terminal device transmits HARQ-ACK of the first PDSCH and HARQ-ACK of the third PDSCH on the PUCCH corresponding to the first PDSCH.
Optionally, if the second indication information indicates that HARQ-ACK feedback for the third PDSCH is not triggered, the terminal device will not transmit HARQ-ACK for the third PDSCH on the PUCCH corresponding to the first PDSCH.
It should be noted that, in the case that the trigger field of the indication information includes the first indication information and the second indication information, the first indication information and the second indication information may be different indication information, for example, the bit number of the first indication information and the bit number of the second indication information in the trigger field may be 2, where the first bit number may be the bit number of the first indication information, and the second bit number may be the bit number of the second indication information, or the first bit number may be the bit number of the second indication information, and the second bit number is the bit number of the first indication information, which is not limited specifically here. Or the first indication information and the second indication information may be the same indication information. For example, the first indication information and the second indication information in the trigger domain share 1bit, and the bit is used for triggering HARQ-ACK feedback of the second PDSCH and the third PDSCH simultaneously.
For ease of understanding, reference may be made to fig. 3.
In fig. 3, the network device schedules PDSCH1 through PDCCH1 and instructs the terminal device to feed back HARQ-ACK1 of PDSCH1 on PUCCH1 corresponding to PDSCH1, and further instructs PDSCH1 to belong to HARQ-ACK codebook 0 (i.e., H ═ 0) and PDSCH group 0 (i.e., G ═ 0). After that, when transmitting PUCCH1, the terminal device detects that the channel is busy, and cannot transmit HARQ-ACK1 of PDSCH1 on PUCCH 1.
After that, the network device schedules PDSCH2 through PDCCH2 and instructs the terminal device to feed back HARQ-ACK2 of PDSCH2 on PUCCH2 corresponding to PDSCH2, and further instructs PDSCH2 to belong to HARQ-ACK codebook 1 and PDSCH group 0, after that, when the terminal device transmits PUCCH2, the terminal device detects that the channel is busy and cannot transmit HARQ-ACK2 of PDSCH2 on PUCCH 2.
After that, the network device schedules PDSCH3 through PDCCH3 and instructs the terminal device to feed back HARQ-ACK3 of PDSCH3 on PUCCH3 corresponding to PDSCH3, and further instructs PDSCH3 to belong to HARQ-ACK codebook 1 and PDSCH group 1, after that, when the terminal device transmits PUCCH3, the terminal device detects that the channel is busy and cannot transmit HARQ-ACK3 of PDSCH3 on PUCCH 3.
After that, the network device schedules PDSCH4 through PDCCH4 and instructs the terminal device to feed back HARQ-ACK4 of PDSCH4 on PUCCH4 corresponding to PDSCH4, and further, instructs the PDSCH4 to belong to HARQ-ACK codebook 0 and PDSCH group 1, and instructs to trigger HARQ-ACK feedback of PDSCH1 of different PDSCH groups (G ═ 0) under the same HARQ-ACK codebook (H ═ 0) in the first bit of the trigger field (i.e. the first "1" of T shown in fig. 3), and instructs to trigger feedback of PDSCH group (H ═ 1) under different HARQ-ACK codebooks (H ═ 1) in the second bit (i.e. the second "1" of T shown in fig. 3).
Based on the second implementation, if the second bit in the trigger domain indicates that HARQ-ACK feedback for PDSCH of the same PDSCH group under different HARQ-ACK codebooks is triggered, the terminal device transmits HARQ-ACK for each of PDSCH1, PDSCH3 and PDSCH4 on PUCCH 4; if the second bit in the trigger field indicates that HARQ-ACK feedback for PDSCH of all PDSCH groups under different HARQ-ACK codebooks is triggered, the terminal device will transmit HARQ-ACK for PDSCH1, PDSCH2, PDSCH3 and PDSCH4, respectively, on PUCCH 4. In fig. 3, only the case where HARQ-ACK of each of PDSCH1, PDSCH2, PDSCH3, and PDSCH4 is transmitted on PUCCH4 is shown.
Another way to implement this is that the trigger field has only 1bit, i.e. T-11 in fig. 3 is changed to T-1, and this 1bit can be used to:
(1) triggering HARQ-ACK feedback of the current scheduled PDSCH and HARQ-ACK feedback of a PDSCH which belongs to different HARQ-ACK codebooks and corresponds to the same PDSCH group number as the current scheduled PDSCH, wherein the terminal equipment in the figure 3 feeds back HARQ-ACK corresponding to PDSCH3 and PDSCH4 on PUCCH 4;
(2) triggering HARQ-ACK feedback of a second PDSCH and HARQ-ACK feedback of PDSCHs of all PDSCH group numbers which belong to different HARQ-ACK codebooks with the currently scheduled PDSCH, wherein the terminal equipment in the figure 3 feeds back HARQ-ACK corresponding to each of the PDSCH2, the PDSCH3 and the PDSCH4 on a PUCCH 4;
(3) triggering HARQ-ACK of the currently scheduled PDSCH, HARQ-ACK feedback of a PDSCH which belongs to the same HARQ-ACK codebook as the currently scheduled PDSCH and corresponds to different PDSCH group numbers, and HARQ-ACK feedback of a PDSCH which belongs to different HARQ-ACK codebooks as the currently scheduled PDSCH and corresponds to the same PDSCH group number, wherein the terminal equipment in the figure 3 feeds back HARQ-ACK corresponding to PDSCH1, PDSCH3 and PDSCH4 on PUCCH4 at the moment;
(4) triggering HARQ-ACK feedback of a PDSCH which belongs to the same HARQ-ACK codebook and corresponds to a different PDSCH group number as the currently scheduled PDSCH, and HARQ-ACK feedback of a PDSCH which belongs to all PDSCH group numbers of the different HARQ-ACK codebook as the currently scheduled PDSCH, wherein the terminal device in the figure 3 feeds back HARQ-ACK corresponding to each of PDSCH1, PDSCH2, PDSCH3 and PDSCH4 on PUCCH 4.
In a third implementation:
the trigger field in the indication information may include third indication information indicating whether to trigger HARQ-ACK feedback for the fourth PDSCH and the fifth PDSCH, in addition to the first indication information described above. Wherein:
the fourth PDSCH and the fifth PDSCH may both be one or more PDSCHs in other scheduled PDSCHs, the fourth PDSCH and the fifth PDSCH correspond to different PDSCH groups under the same HARQ-ACK codebook, and the HARQ-ACK codebook corresponding to the fourth PDSCH and the fifth PDSCH is different from the HARQ-ACK codebook corresponding to the first PDSCH.
In this way, when performing HARQ-ACK feedback on the first PDSCH, the terminal device:
if the third indication information indicates that HARQ-ACK feedback on the fourth PDSCH and the fifth PDSCH is triggered, the terminal equipment transmits HARQ-ACK of the first PDSCH, the fourth PDSCH and the fifth PDSCH on a PUCCH corresponding to the first PDSCH;
if the third indication information indicates that HARQ-ACK feedback of a fourth PDSCH is triggered, the terminal equipment transmits respective HARQ-ACK of the first PDSCH and the fourth PDSCH on a PUCCH corresponding to the first PDSCH, wherein the terminal equipment does not transmit HARQ-ACK feedback of a fifth PDSCH on the PUCCH corresponding to the first PDSCH because the third indication information does not indicate that HARQ-ACK feedback of the fifth PDSCH is triggered;
and if the third indication information indicates that HARQ-ACK feedback on the fifth PDSCH is triggered, the terminal equipment transmits respective HARQ-ACK of the first PDSCH and the fifth PDSCH on a PUCCH corresponding to the first PDSCH, wherein the terminal equipment does not transmit HARQ-ACK feedback on the fourth PDSCH on the PUCCH corresponding to the first PDSCH because the third indication information does not indicate that HARQ-ACK feedback on the fourth PDSCH is triggered.
It should be noted that, in the case that the trigger field of the indication information includes the first indication information and the third indication information, the number of bits of the trigger field may be 3, where the first number of bits may be the number of bits of the first indication information, the second and third numbers of bits may be the number of bits of the third indication information, the second number of bits may be the number of bits of the PDSCH group with a lower group number, and the third number of bits may be the number of bits of the PDSCH group with a higher group number, or the second number of bits may be the number of bits of the PDSCH group with a higher group number and the third number of bits may be the number of bits of the PDSCH group with a lower group number, which is not specifically limited herein.
For ease of understanding, reference may be made to fig. 4.
In fig. 4, the network device schedules PDSCH1 through PDCCH1 and instructs the terminal device to feed back HARQ-ACK1 of PDSCH1 on PUCCH1 corresponding to PDSCH1, and further instructs PDSCH1 to belong to HARQ-ACK codebook 0 (i.e., H ═ 0) and PDSCH group 0 (i.e., G ═ 0). After that, when transmitting PUCCH1, the terminal device detects that the channel is busy, and cannot transmit HARQ-ACK1 of PDSCH1 on PUCCH 1.
After that, the network device schedules PDSCH2 through PDCCH2 and instructs the terminal device to feed back HARQ-ACK2 of PDSCH2 on PUCCH2 corresponding to PDSCH2, and further instructs PDSCH2 to belong to HARQ-ACK codebook 1 and PDSCH group 0, after that, when the terminal device transmits PUCCH2, the terminal device detects that the channel is busy and cannot transmit HARQ-ACK2 of PDSCH2 on PUCCH 2.
After that, the network device schedules PDSCH3 through PDCCH3 and instructs the terminal device to feed back HARQ-ACK3 of PDSCH3 on PUCCH3 corresponding to PDSCH3, and further instructs PDSCH3 to belong to HARQ-ACK codebook 1 and PDSCH group 1, after that, when the terminal device transmits PUCCH3, the terminal device detects that the channel is busy and cannot transmit HARQ-ACK3 of PDSCH3 on PUCCH 3.
After that, the network device schedules PDSCH4 through PDCCH4 and instructs the terminal device to feed back HARQ-ACK4 of PDSCH4 on PUCCH4 corresponding to PDSCH4, and further, instructs the terminal device that PDSCH4 belongs to HARQ-ACK codebook 0 and PDSCH group 1, and instructs to trigger HARQ-ACK feedback of PDSCH1 of different PDSCH groups (G ═ 0) under the same HARQ-ACK codebook (H ═ 0) in the first bit of the trigger field (i.e. the first "1" of T shown in fig. 4), instructs to trigger feedback of PDSCH group 0 of different HARQ-ACK codebook (H ═ 1) in the second bit (i.e. the second "1" of T shown in fig. 4), and instructs not to trigger feedback of PDSCH group 1 of different HARQ-ACK (H ═ 1) in the third bit (i.e. the third "0" of T shown in fig. 4). In this way, the terminal device transmits HARQ-ACK for each of PDSCH1, PDSCH2, and PDSCH4 on PUCCH4, and does not transmit HARQ-ACK3 for PDSCH 3.
It should be noted that, in the second implementation manner and the third implementation manner described above, the terminal device needs to transmit HARQ-ACKs of different PDSCH groups of different HARQ-ACK codebooks on one PUCCH, where calculation and indication of the cumulative Downlink assignment Indicator (C-DAI)/total Downlink assignment Indicator (T-DAI) in the PDCCH may be performed in each PDSCH group of each HARQ-ACK codebook, the terminal device may concatenate bit sequences corresponding to different HARQ-ACK codebooks when constructing the HARQ-ACK codebook, and the bit sequence in each HARQ-ACK may be constructed according to the order of PDSCH group 0 and PDSCH group 1.
In addition, for the network equipment, because the network equipment can trigger the HARQ-ACK transmission of the PDSCH of the other HARQ-ACK codebook in the PDSCH of one HARQ-ACK codebook, the load of the PDCCH can be effectively reduced.
In a fourth implementation, the indication information may further include a New Feedback group indication (NFI), where the NFI is used to indicate whether to perform HARQ-ACK Feedback on a sixth PDSCH, where the sixth PDSCH may be one or more PDSCHs in other scheduled PDSCHs, and the sixth PDSCH and the first PDSCH correspond to the same PDSCH group.
It should be noted that, in this embodiment, the sixth PDSCH may correspond to the same HARQ-ACK codebook as the first PDSCH, may also correspond to different HARQ-ACK codebooks, or may include both a PDSCH belonging to the same HARQ-ACK codebook as the first PDSCH and a PDSCH belonging to a different HARQ-ACK codebook as the first PDSCH, which is not limited specifically herein. In addition, the indication manner of the NFI is a flipping indication, specifically, if the NFI in the PDCCH of the current scheduled PDSCH is flipped compared to the NFI in the PDCCH corresponding to the previous scheduled PDSCH (belonging to the same PDSCH group), it is indicated that HARQ-ACK feedback for the sixth PDSCH is not triggered, and if the NFI is not flipped, it is indicated that HARQ-ACK feedback for the sixth PDSCH is triggered.
In this way, when performing HARQ-ACK feedback, if the NFI indicates that HARQ-ACK feedback for the sixth PDSCH is triggered (i.e., the NFI is not flipped), the terminal device transmits HARQ-ACK for the first PDSCH and HARQ-ACK for the sixth PDSCH on the PUCCH corresponding to the first PDSCH.
Optionally, if the NFI does not indicate that HARQ-ACK feedback for the sixth PDSCH is triggered (i.e., the NFI is flipped), HARQ-ACK for the sixth PDSCH will not be transmitted on the PUCCH corresponding to the first PDSCH.
For ease of understanding, reference may be made to fig. 5.
In fig. 5, the network device schedules PDSCH1 through PDCCH1 and instructs the terminal device to feed back HARQ-ACK1 of PDSCH1 on PUCCH1 corresponding to PDSCH1, and further, the network device instructs PDSCH1 to belong to HARQ-ACK codebook 0 (i.e., H ═ 0) and PDSCH group 0 (i.e., G ═ 0), and NFI is 0. After that, when transmitting PUCCH1, the terminal device detects that the channel is busy, and cannot transmit HARQ-ACK1 of PDSCH1 on PUCCH 1.
After that, the network device schedules PDSCH2 through PDCCH2 and instructs the terminal device to feed back HARQ-ACK2 of PDSCH2 on PUCCH2 corresponding to PDSCH2, and further, the network device instructs PDSCH2 to belong to HARQ-ACK codebook 1 and PDSCH group 0, and NFI is 0. Then, when transmitting PUCCH2, the terminal device detects that the channel is busy, and cannot transmit HARQ-ACK2 of PDSCH2 on PUCCH 2.
After that, the network device schedules PDSCH3 through PDCCH3 and instructs the terminal device to feed back HARQ-ACK3 of PDSCH3 on PUCCH3 corresponding to PDSCH3, and further, the network device instructs PDSCH3 to belong to HARQ-ACK codebook 0 and PDSCH group 0, and NFI is 0. In this way, when the terminal device transmits PUCCH3, since NFI is not flipped (still 0), the terminal device will transmit HARQ-ACK3 of PDSCH3 and HARQ-ACK of other PDSCH of the same PDSCH group as PDSCH3 on PUCCH3, which may specifically be any one of the following three cases (fig. 5 only shows the following third case):
in the first case: the terminal device will transmit HARQ-ACK3 for PDSCH3 on PUCCH3 and HARQ-ACK1 for PDSCH1 belonging to the same PDSCH group of the same HARQ-ACK codebook as PDSCH 3;
in the second case: the terminal device will transmit HARQ-ACK3 for PDSCH3 on PUCCH3 and HARQ-ACK2 for PDSCH2 belonging to the same PDSCH group as PDSCH3 in a different HARQ-ACK codebook;
in the third case: the terminal device will transmit HARQ-ACK3 for PDSCH3 on PUCCH3 along with HARQ-ACK for PDSCH1 and PDSCH2, respectively, belonging to the same PDSCH group as PDSCH3 in the same and different HARQ-ACK codebooks.
It should be noted that, in this embodiment, when performing HARQ-ACK feedback, the terminal device may further perform feedback and timing feedback on the same PUCCH in combination with HARQ-ACK of a PDSCH in the same PDSCH group in an unlicensed spectrum. When timing feedback is indicated, k1 (timing indication from the PDSCH to HARQ-ACK feedback) can be indicated in the PDCCH, if k1 is a non-numerical value, it is characterized that the terminal device does not need to perform timing HARQ-ACK feedback on the currently scheduled PDSCH, but determines specific feedback time and PUCCH resources through the PDSCH of the same PDSCH group scheduled later, and if k1 is a numerical value, it is characterized that the terminal device needs to perform HARQ-ACK feedback after receiving k1 slots or sub-slots of the PDSCH.
In addition, the fourth implementation manner described above may also be combined with any one of the first to third implementation manners described above, so that the terminal device may effectively perform HARQ-ACK feedback to the network device for PDSCHs belonging to different PDCSH groups of different HARQ-ACK codebooks in different application scenarios.
For ease of understanding, reference may be made to fig. 6, 7 and 8.
In fig. 6, the network device schedules PDSCH1 through PDCCH1, schedules PDSCH2 through PDCCH2, schedules PDSCH3 through PDCCH3, schedules PDSCH4 through PDCCH4, and indicates that PDSCH1 belongs to HARQ-ACK codebook 0 (i.e., H ═ 0), PDSCH group 0 (i.e., G ═ 0), NFI ═ 0, 4-slot post-feedback (k1 ═ 4), PDSCH2 belongs to HARQ-ACK codebook 0, PDSCH group 0, NFI ═ 0, k1 ═ 3, PDSCH3 belongs to HARQ-ACK codebook 0, PDSCH group 1, NFI ═ 0, k1 ═ P (pending, non-value k1), PDSCH4 belongs to HARQ-codebook ACK1, PDSCH group 0, NFI ═ 0, and k1 ═ 1.
Based on the indication of the network equipment, when performing HARQ-ACK feedback, the terminal equipment may perform HARQ-ACK feedback on PDSCH1 and PDSCH2 belonging to the same PDSCH group of the same HARQ-ACK codebook on PUCCH1, perform HARQ-ACK feedback on PDSCH4 belonging to HARQ-ACK codebook 1 on PUCCH2, and since PDSCH3 belongs to PDSCH group 1 of HARQ-ACK codebook 0, the feedback time and PUCCH resources are pending.
Since the terminal device detects that the channel is busy before transmitting PUCCH1 and PUCCH2, PUCCH1 and PUCCH2 cannot be transmitted, and then the network device schedules PDSCH5 again, according to PDCCH5 scheduling PDSCH5, the terminal device may determine that PDSCH5 belongs to PDSCH group 1 of HARQ-ACK codebook 0, and relative to NFI of PDSCH3, NFI of PDSCH5 is not inverted, that is, it is characterized that the terminal device needs to feedback HARQ-ACK feedback of PDSCH3 (PDSCH1 and PDSCH2 belonging to the same PDSCH group as PDSCH 5) and PDSCH5 on one PUCCH resource (PUCCH 3), and at the same time, trigger field T ═ 1 in PDCCH5 indicates to trigger HARQ-ACK feedback of PDSCH1 and PDSCH2 of another PDSCH group (PDSCH group 0) of HARQ-ACK codebook where PDSCH5 is located, so that the terminal device will feedback HARQ-ACK feedback 1, PDSCH6, PDSCH3 and PDSCH5 on PUCCH3 corresponding to PDSCH 5.
After that, the network device has scheduled PDSCH6 through PDCCH6 and indicated that PDSCH6 belongs to PDSCH group 0 of HARQ-ACK codebook 1, NFI is 0, and there is no inversion (NFI is 0 for PDSCH4 of the same PDSCH group with respect to the same HARQ-ACK codebook), as shown in fig. 6, so the terminal device will feed back HARQ-ACK for each of PDSCH4 and PDSCH6 on PUCCH4 corresponding to PDSCH 6.
Alternatively, in fig. 6, when the network device schedules the PDSCH5, if the trigger field T in the PDCCH5 is 11, that is, the first bit indicates to trigger HARQ-ACK feedback of the PDSCH3 in another PDSCH group (i.e., PDSCH group 0) in an HARQ-ACK codebook (HARQ-ACK codebook 0) where the PDSCH5 is located, and the second bit indicates to trigger HARQ-ACK feedback of the PDSCH in another HARQ-ACK codebook (i.e., codebook 1) different from the HARQ-ACK codebook where the PDSCH5 is located, as shown in fig. 7, then:
if the second bit of the trigger field indicates that the HARQ-ACK feedback of the PDSCH of the same PDSCH group (i.e. PDSCH group 0) of HARQ-ACK codebook 1 is triggered, the terminal device will transmit HARQ-ACK of each of PDSCH1, PDSCH2, PDSCH3, PDSCH4 and PDSCH5 on PUCCH 3.
If the second bit in the trigger field indicates that the HARQ-ACK feedback of the PDSCH of all PDSCH groups of HARQ-ACK codebook 1 is triggered, the terminal device will transmit HARQ-ACK of each of PDSCH1, PDSCH2, PDSCH3, PDSCH4 and PDSCH5 on PUCCH3 because all groups of HARQ-ACK codebook 1 have only PDSCH group 0.
Alternatively, in fig. 6, when the network device schedules the PDSCH5, if the trigger field T in the PDCCH5 is 110, that is, the first bit indicates that the HARQ-ACK feedback of the PDSCH3 in another PDSCH group (i.e., PDSCH group 0) of the HARQ-ACK codebook in which the PDSCH5 is located is triggered, and the second bit indicates that the HARQ-ACK feedback of the PDSCH in another HARQ-ACK codebook (i.e., codebook 1) different from the HARQ-ACK codebook in which the PDSCH5 is located is triggered, as shown in fig. 8, then:
if the second bit of the trigger field is used to indicate that the HARQ-ACK feedback for the PDSCH of PDSCH group 0 of HARQ-ACK codebook 1 is triggered and the third bit is used to indicate that the HARQ-ACK feedback for the PDSCH of PDSCH group 1 of HARQ-ACK codebook 1 is not triggered, the terminal device will transmit HARQ-ACKs for each of PDSCH1, PDSCH2, PDSCH3, PDSCH4 and PDSCH5 on PUCCH 3.
If the second bit of the trigger field is used to indicate that HARQ-ACK feedback for PDSCH of PDSCH group 1 of HARQ-ACK codebook 1 is not triggered, the third bit is used to indicate that HARQ-ACK feedback for PDSCH of PDSCH group 0 of HARQ-ACK codebook 1 is triggered, and T is 101, the terminal device will transmit HARQ-ACK for each of PDSCH1, PDSCH2, PDSCH3 and PDSCH5 on PUCCH3 (not shown in fig. 8) because there is no PDSCH belonging to PDSCH group 1 of HARQ-ACK codebook 1 and there is no trigger in the scheduled PDSCH.
In the embodiment of the present invention, in the process of communication between a network device and a terminal device under a hybrid service in an unlicensed spectrum, when the network device sends a PDCCH to the terminal device, the network device may indicate a trigger field in the PDCCH, where the trigger field is used to trigger HARQ-ACK feedback for other scheduled PDSCHs, and the other PDSCHs include PDSCHs corresponding to a same or different HARQ-ACK codebook as a currently scheduled PDSCH, and after receiving the PDCCH from the network device, the terminal device may perform HARQ-ACK feedback for the currently scheduled PDSCH and other scheduled PDSCHs according to an indication from the network device. In this way, since the network device may indicate to the terminal device whether to trigger HARQ-ACK feedback for other scheduled PDSCHs through the trigger field, the terminal device may effectively perform HARQ-ACK feedback to the network device based on the indication of the network device.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention, where the terminal device includes: a receiving module 91 and a feedback module 92, wherein:
a receiving module 91, configured to receive a first physical downlink control channel PDCCH from a network device, where the first PDCCH is used to schedule a first physical downlink shared channel PDSCH, the first PDCCH includes indication information, the indication information includes a trigger domain, the trigger domain is used to trigger HARQ-ACK feedback for other scheduled PDSCHs, and the other PDSCHs include PDSCHs corresponding to a same or different HARQ-ACK codebook as the first PDSCH;
a feedback module 92, configured to perform HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information.
Optionally, the trigger domain includes first indication information, where the first indication information is used to indicate whether to trigger HARQ-ACK feedback for a second PDSCH of the other PDSCHs;
the second PDSCH and the first PDSCH correspond to the same HARQ-ACK codebook and different PDCCH groups.
Optionally, the feedback module 92 performs HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, including:
and if the first indication information indicates that HARQ-ACK feedback of the second PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the second PDSCH on a Physical Uplink Control Channel (PUCCH) corresponding to the first PDSCH.
Optionally, the trigger domain further includes second indication information, where the second indication information is used to indicate whether to trigger HARQ-ACK feedback for a third PDCSH in the other PDSCHs;
the third PDCSH and the first PDSCH correspond to different HARQ-ACK codebooks and the same PDSCH group; or the like, or, alternatively,
the third PDCSH corresponds to a different HARQ-ACK codebook from the first PDSCH, and the third PDSCH includes PDSCHs in a plurality of PDSCH groups.
Optionally, the feedback module 92 performs HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, including:
and if the second indication information indicates that HARQ-ACK feedback of the third PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the third PDSCH on a PUCCH corresponding to the first PDSCH.
Optionally, the trigger domain further includes third indication information, where the third indication information is used to indicate whether to trigger HARQ-ACK feedback for a fourth PDSCH and a fifth PDSCH in the other PDSCHs;
the fourth PDSCH and the fifth PDSCH correspond to different PDSCH groups under the same HARQ-ACK codebook, and the HARQ-ACK codebook corresponding to the fourth PDSCH and the fifth PDSCH is different from the HARQ-ACK codebook corresponding to the first PDSCH.
Optionally, the feedback module 92 performs HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, including:
if the third indication information indicates that HARQ-ACK feedback of the fourth PDSCH and the fifth PDSCH is triggered, transmitting HARQ-ACK of the first PDSCH, HARQ-ACK of the fourth PDSCH and HARQ-ACK of the fifth PDSCH on a PUCCH corresponding to the first PDSCH;
if the third indication information indicates that HARQ-ACK feedback of the fourth PDSCH is triggered, transmitting HARQ-ACK of the first PDSCH and HARQ-ACK of the fourth PDSCH on a PUCCH corresponding to the first PDSCH;
and if the third indication information indicates that HARQ-ACK feedback of the fifth PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the fifth PDSCH on a PUCCH corresponding to the first PDSCH.
Optionally, the indication information further includes a new feedback group indication NFI, where the NFI is used to indicate whether to perform HARQ-ACK feedback on a sixth PDSCH in the other PDSCHs, and the sixth PDSCH and the first PDSCH correspond to the same PDSCH group.
Optionally, the feedback module 92 performs HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, including:
and if the NFI indicates HARQ-ACK feedback on the sixth PDSCH, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the sixth PDSCH on a PUCCH corresponding to the first PDSCH.
The terminal device provided in the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of fig. 1, and is not described herein again to avoid repetition. In the embodiment of the invention, in the process of communication between network equipment and terminal equipment under a mixed service in an unlicensed spectrum, when the network equipment sends a PDCCH to the terminal equipment, the network equipment can indicate a trigger domain in the PDCCH, wherein the trigger domain is used for triggering HARQ-ACK feedback of other scheduled PDSCHs, the other PDSCHs comprise PDSCHs corresponding to the same or different HARQ-ACK codebooks as or different from the currently scheduled PDSCH, and after receiving the PDCCH from the network equipment, the terminal equipment can perform HARQ-ACK feedback on the currently scheduled PDSCH and the other scheduled PDSCHs according to the indication of the network equipment. In this way, since the network device may indicate to the terminal device whether to trigger HARQ-ACK feedback for other scheduled PDSCHs through the trigger field, the terminal device may effectively perform HARQ-ACK feedback to the network device based on the indication of the network device.
Fig. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. The terminal device 1000 shown in fig. 10 includes: at least one processor 1001, memory 1002, at least one network interface 1004, and a user interface 1003. Various components in mobile terminal 1000 are coupled together by a bus system 1005. It is understood that bus system 1005 is used to enable communications among the components connected. The bus system 1005 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, the various buses are designated in figure 10 as the bus system 1005.
The user interface 1003 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 1002 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 Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an electrically Erasable Programmable Read-Only Memory (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 (SRAM, StaticRAM), Dynamic random access memory (DRAM, Dynamic RAM), Synchronous Dynamic random access memory (SDRAM, Synchronous DRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM, Double Data Rate SDRAM), Enhanced Synchronous Dynamic random access memory (ESDRAM, Enhanced SDRAM), Synchronous link Dynamic random access memory (SLDRAM, Synchlink DRAM), and Direct memory bus random access memory (DRRAM, Direct Rambus RAM). The memory 1002 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 1002 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 10021 and applications 10022.
The operating system 10021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 10022 includes various applications, such as a media player (MediaPlayer), a Browser (Browser), and the like, for implementing various application services. The program implementing the method according to the embodiment of the present invention may be included in the application program 10022.
In this embodiment of the present invention, the terminal device 1000 further includes: a computer program stored on the memory 1002 and executable on the processor 1001, the computer program when executed by the processor 1001 implementing the steps of:
receiving a first Physical Downlink Control Channel (PDCCH) from network equipment, wherein the first PDCCH is used for scheduling a first Physical Downlink Shared Channel (PDSCH), the first PDCCH comprises indication information, the indication information comprises a trigger domain, the trigger domain is used for triggering HARQ-ACK feedback of other scheduled PDSCHs, and the other PDSCHs comprise PDSCHs corresponding to the same or different HARQ-ACK codebooks with the first PDSCH;
and performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information.
The method disclosed by the embodiment of the invention can be applied to the processor 1001 or can be implemented by the processor 1001. The processor 1001 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 1001. The Processor 1001 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 1002, and the processor 1001 reads the information in the memory 1002 and performs the steps of the method in combination with the hardware. Specifically, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 1001 implements the steps of the above-described information indication method embodiments.
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 designed 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.
Optionally, the computer program may further implement the following steps when being executed by the processor 1001:
the trigger domain comprises first indication information which is used for indicating whether to trigger HARQ-ACK feedback of a second PDSCH in the other PDSCHs;
the second PDSCH and the first PDSCH correspond to the same HARQ-ACK codebook and different PDCCH groups.
Performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, wherein the HARQ-ACK feedback comprises the following steps:
and if the first indication information indicates that HARQ-ACK feedback of the second PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the second PDSCH on a Physical Uplink Control Channel (PUCCH) corresponding to the first PDSCH.
The trigger domain further comprises second indication information, and the second indication information is used for indicating whether to trigger HARQ-ACK feedback to a third PDCSH in the other PDSCHs;
the third PDCSH and the first PDSCH correspond to different HARQ-ACK codebooks and the same PDSCH group; or the like, or, alternatively,
the third PDCSH corresponds to a different HARQ-ACK codebook than the first PDSCH, and the third PDSCH comprises PDSCHs in a plurality of PDSCH groups.
Performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, wherein the HARQ-ACK feedback comprises the following steps:
and if the second indication information indicates that HARQ-ACK feedback of the third PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the third PDSCH on a PUCCH corresponding to the first PDSCH.
The trigger domain further comprises third indication information, and the third indication information is used for indicating whether to trigger HARQ-ACK feedback of a fourth PDSCH and a fifth PDSCH in the other PDSCHs;
the fourth PDSCH and the fifth PDSCH correspond to different PDSCH groups under the same HARQ-ACK codebook, and the HARQ-ACK codebook corresponding to the fourth PDSCH and the fifth PDSCH is different from the HARQ-ACK codebook corresponding to the first PDSCH.
Performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, wherein the HARQ-ACK feedback comprises the following steps:
if the third indication information indicates that HARQ-ACK feedback of the fourth PDSCH and the fifth PDSCH is triggered, transmitting HARQ-ACK of the first PDSCH, HARQ-ACK of the fourth PDSCH and HARQ-ACK of the fifth PDSCH on a PUCCH corresponding to the first PDSCH;
if the third indication information indicates that HARQ-ACK feedback of the fourth PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the fourth PDSCH on a PUCCH corresponding to the first PDSCH;
and if the third indication information indicates that HARQ-ACK feedback of the fifth PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the fifth PDSCH on a PUCCH corresponding to the first PDSCH.
The indication information further includes a new feedback group indication NFI, where the NFI is used to indicate whether to perform HARQ-ACK feedback on a sixth PDSCH in the other PDSCHs, and the sixth PDSCH and the first PDSCH correspond to the same PDSCH group.
Performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information, wherein the HARQ-ACK feedback comprises the following steps:
and if the NFI indicates that HARQ-ACK feedback is carried out on the sixth PDSCH, transmitting HARQ-ACK of the first PDSCH and HARQ-ACK of the sixth PDSCH on a PUCCH corresponding to the first PDSCH.
The terminal device 1000 can implement each process implemented by the first terminal in the foregoing embodiments, and details are not repeated here to avoid repetition. In the embodiment of the invention, in the process of communication between network equipment and terminal equipment under a mixed service in an unlicensed spectrum, when the network equipment sends a PDCCH to the terminal equipment, the network equipment can indicate a trigger domain in the PDCCH, wherein the trigger domain is used for triggering HARQ-ACK feedback of other scheduled PDSCHs, the other PDSCHs comprise PDSCHs corresponding to the same or different HARQ-ACK codebooks as or different from the currently scheduled PDSCH, and after receiving the PDCCH from the network equipment, the terminal equipment can perform HARQ-ACK feedback on the currently scheduled PDSCH and the other scheduled PDSCHs according to the indication of the network equipment. In this way, since the network device may indicate to the terminal device whether to trigger HARQ-ACK feedback for other scheduled PDSCHs through the trigger field, the terminal device may effectively perform HARQ-ACK feedback to the network device based on the indication of the network device.
Preferably, an embodiment of the present invention further provides a mobile terminal, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the foregoing HARQ-ACK feedback method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
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 each process of the foregoing HARQ-ACK feedback method embodiment, and can achieve the same technical effect, 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 (10)

1. A feedback method of HARQ-ACK is characterized by comprising the following steps:
receiving a first Physical Downlink Control Channel (PDCCH) from network equipment, wherein the first PDCCH is used for scheduling a first Physical Downlink Shared Channel (PDSCH), the first PDCCH comprises indication information, the indication information comprises a trigger domain, the trigger domain is used for triggering HARQ-ACK feedback of other scheduled PDSCHs, and the other PDSCHs comprise PDSCHs corresponding to the same or different HARQ-ACK codebooks with the first PDSCH;
performing HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information;
the trigger domain comprises first indication information and second indication information, wherein the first indication information is used for indicating whether to trigger HARQ-ACK feedback of a second PDSCH in the other PDSCHs, and the second indication information is used for indicating whether to trigger HARQ-ACK feedback of a third PDSCH in the other PDSCHs;
the second PDSCH and the first PDSCH correspond to the same HARQ-ACK codebook and different PDSCH groups;
the third PDSCH and the first PDSCH correspond to different HARQ-ACK codebooks and the same PDSCH group; or the like, or, alternatively,
the third PDSCH corresponds to a different HARQ-ACK codebook than the first PDSCH, and the third PDSCH includes PDSCHs in multiple PDSCH groups.
2. The method of claim 1, wherein performing HARQ-ACK feedback for the first PDSCH and the other PDSCHs based on the indication information comprises:
and if the first indication information indicates that HARQ-ACK feedback of the second PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the second PDSCH on a Physical Uplink Control Channel (PUCCH) corresponding to the first PDSCH.
3. The method of claim 1, wherein performing HARQ-ACK feedback for the first PDSCH and the other PDSCHs based on the indication information comprises:
and if the second indication information indicates that HARQ-ACK feedback of the third PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the third PDSCH on a PUCCH corresponding to the first PDSCH.
4. The method of claim 1,
the trigger domain further comprises third indication information, and the third indication information is used for indicating whether to trigger HARQ-ACK feedback of a fourth PDSCH and a fifth PDSCH in the other PDSCHs;
the fourth PDSCH and the fifth PDSCH correspond to different PDSCH groups under the same HARQ-ACK codebook, and the HARQ-ACK codebook corresponding to the fourth PDSCH and the fifth PDSCH is different from the HARQ-ACK codebook corresponding to the first PDSCH.
5. The method of claim 4, wherein performing HARQ-ACK feedback for the first PDSCH and the other PDSCHs according to the indication information comprises:
if the third indication information indicates that HARQ-ACK feedback of the fourth PDSCH and the fifth PDSCH is triggered, transmitting HARQ-ACK of the first PDSCH, HARQ-ACK of the fourth PDSCH and HARQ-ACK of the fifth PDSCH on a PUCCH corresponding to the first PDSCH;
if the third indication information indicates that HARQ-ACK feedback of the fourth PDSCH is triggered, transmitting HARQ-ACK of the first PDSCH and HARQ-ACK of the fourth PDSCH on a PUCCH corresponding to the first PDSCH;
and if the third indication information indicates that HARQ-ACK feedback of the fifth PDSCH is triggered, transmitting the HARQ-ACK of the first PDSCH and the HARQ-ACK of the fifth PDSCH on a PUCCH corresponding to the first PDSCH.
6. The method of claim 1,
the indication information further includes a new feedback group indication NFI, where the NFI is used to indicate whether to perform HARQ-ACK feedback on a sixth PDSCH in the other PDSCHs, and the sixth PDSCH and the first PDSCH correspond to the same PDSCH group.
7. The method of claim 6, wherein performing HARQ-ACK feedback for the first PDSCH and the other PDSCHs according to the indication information comprises:
and if the NFI indicates that HARQ-ACK feedback is carried out on the sixth PDSCH, transmitting HARQ-ACK of the first PDSCH and HARQ-ACK of the sixth PDSCH on a PUCCH corresponding to the first PDSCH.
8. A terminal device, comprising:
a receiving module, configured to receive a first physical downlink control channel PDCCH from a network device, where the first PDCCH is used to schedule a first physical downlink shared channel PDSCH, the first PDCCH includes indication information, the indication information includes a trigger domain, the trigger domain is used to trigger HARQ-ACK feedback for other scheduled PDSCHs, and the other PDSCHs include PDSCHs corresponding to a same or different HARQ-ACK codebook as the first PDSCH;
a feedback module, configured to perform HARQ-ACK feedback on the first PDSCH and the other PDSCHs according to the indication information;
the trigger domain comprises first indication information and second indication information, wherein the first indication information is used for indicating whether to trigger HARQ-ACK feedback of a second PDSCH in the other PDSCHs, and the second indication information is used for indicating whether to trigger HARQ-ACK feedback of a third PDSCH in the other PDSCHs;
the second PDSCH and the first PDSCH correspond to the same HARQ-ACK codebook and different PDSCH groups;
the third PDSCH and the first PDSCH correspond to different HARQ-ACK codebooks and the same PDSCH group; or the like, or, alternatively,
the third PDSCH corresponds to a different HARQ-ACK codebook than the first PDSCH, and the third PDSCH includes PDSCHs in multiple PDSCH groups.
9. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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