CN112492647B - DCI scheduling method, equipment and system - Google Patents

DCI scheduling method, equipment and system Download PDF

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Publication number
CN112492647B
CN112492647B CN201910867392.4A CN201910867392A CN112492647B CN 112492647 B CN112492647 B CN 112492647B CN 201910867392 A CN201910867392 A CN 201910867392A CN 112492647 B CN112492647 B CN 112492647B
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harq
ack
pdsch
ack information
dci
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CN112492647A (en
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宋扬
孙鹏
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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/CN2020/114651 priority patent/WO2021047618A1/en
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    • 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
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK

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

Abstract

The embodiment of the invention discloses a DCI scheduling method, a device and a system, which relate to the technical field of communication and can solve the problem of poor accuracy of resources indicated in the UE transmission process when a single DCI is adopted to schedule multiple repeated transmissions of a PDSCH. The method comprises the following steps: receiving K DCIs, wherein the K DCIs correspond to at least one configuration identifier, and K is an integer larger than 1; receiving K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions; feeding back K repeated first HARQ-ACK information of a PDSCH on a first Physical Uplink Control Channel (PUCCH); the preset conditions include at least one of the following: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement. The embodiment of the invention is applied to the process that the UE schedules the repetition of the multiple PDSCHs according to the multiple DCIs.

Description

DCI scheduling method, equipment and system
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a DCI scheduling method, equipment and a system.
Background
In a multiple Transmission Reception Point (TRP) scenario, multiple repeated transmissions of a Physical Downlink Shared Channel (PDSCH) transmitted by multiple TRPs to the same User Equipment (UE) are scheduled by using a single Downlink Control Information (DCI), and each repetition of the PDSCH corresponds to one transmission beam.
However, in the above method, multiple repeated transmissions of the PDSCH are scheduled by using a single DCI, and time-frequency resources and modulation and coding schemes used for transmitting the PDSCH to the UE may not be respectively indicated according to different channel conditions from each TRP to the UE, so that the DCI scheduling flexibility is poor, and the accuracy of the resources indicated in the UE transmission process is poor.
Disclosure of Invention
Embodiments of the present invention provide a DCI scheduling method, device, and system, which may solve the problem that when a single DCI is used to schedule multiple repeated transmissions of a PDSCH, accuracy of resources indicated in a UE transmission process is poor.
In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:
in a first aspect of the embodiments of the present invention, a DCI scheduling method is provided, where the DCI scheduling method is applied to a UE, and the DCI scheduling method includes: receiving K DCIs, wherein the K DCIs correspond to at least one configuration identifier, and K is an integer greater than 1; receiving K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions; feeding back K repeated first HARQ-ACK information of the PDSCH on a first PUCCH; wherein the preset condition comprises at least one of the following conditions: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement.
In a second aspect of the embodiments of the present invention, a DCI scheduling method is provided, where the DCI scheduling method is applied to a network device, and the DCI scheduling method includes: sending K DCIs, wherein the K DCIs correspond to at least one configuration identifier, and K is an integer greater than 1; sending K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions; receiving K repeated first HARQ-ACK information of a PDSCH on a first PUCCH; wherein the preset condition comprises at least one of the following conditions: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement.
In a third aspect of the embodiments of the present invention, a UE is provided, where the UE may include: the device comprises a receiving module and a sending module. The receiving module is used for receiving K DCIs, the K DCIs correspond to at least one configuration identifier, and K is an integer greater than 1; and receiving K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions, and the preset conditions comprise at least one of the following items: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement. And a sending module, configured to feed back the first HARQ-ACK information for K PDSCH repetitions on the first PUCCH.
In a fourth aspect of the embodiments of the present invention, a network device is provided, where the network device may include: the device comprises a sending module and a receiving module. The sending module is used for sending K DCIs, the K DCIs correspond to at least one configuration identifier, and K is an integer greater than 1; and sending K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions, and the preset conditions comprise at least one of the following items: the downlink control channel has the same HARQ process number and NDI is not inverted, the K PDSCHs repeatedly meet the first time limit requirement, and the K DCIs meet the second time limit requirement. A receiving module, configured to receive first HARQ-ACK information for K PDSCH repetitions on a first PUCCH.
In a fifth aspect of the embodiments of the present invention, a UE is provided, where the UE includes a processor, a memory, and a computer program stored in the memory and executable on the processor, and the computer program, when executed by the processor, implements the steps of the DCI scheduling method in the first aspect.
In a sixth aspect of the embodiments of the present invention, a network device is provided, where the network device includes a processor, a memory, and a computer program stored in the memory and being executable on the processor, and the computer program, when executed by the processor, implements the steps of the DCI scheduling method in the second aspect.
A seventh aspect of the present embodiments provides a communication system, where the communication system includes the UE according to the third aspect, and the network device according to the fourth aspect; alternatively, the communication system comprises the UE according to the fifth aspect and the network device according to the sixth aspect.
In an eighth aspect of the embodiments of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, which when executed by a processor implements the steps of the DCI scheduling method according to the first aspect or the DCI scheduling method according to the second aspect.
In the embodiment of the invention, the UE can receive K DCIs sent by the network equipment and K repeated PDSCHs meeting the preset condition, and feeds back K repeated first HARQ-ACK information of the PDSCHs on the first PUCCH. Because the UE can receive multiple repetitions of the PDSCH according to the multiple DCI, that is, multiple repetitions of transmission of the PDSCH are scheduled by using the multiple DCI, the flexibility of DCI scheduling can be increased, and the accuracy of resources indicated in the UE transmission process can be improved.
Drawings
Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a DCI scheduling method according to an embodiment of the present invention;
fig. 3 is a second schematic diagram illustrating a DCI scheduling method according to the embodiment of the present invention;
fig. 4 is a schematic diagram of an example of a starting OFDM symbol position and an ending OFDM symbol position of PDSCH repetition provided by an embodiment of the present invention;
fig. 5 is a third schematic diagram of a DCI scheduling method according to the third embodiment of the present invention;
fig. 6 is a fourth schematic diagram illustrating a DCI scheduling method according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an example of a PUCCH according to an embodiment of the present invention;
fig. 8 is a second exemplary diagram of a PUCCH according to the second embodiment of the present invention;
fig. 9 is a third exemplary diagram of a PUCCH according to the third embodiment of the present invention;
fig. 10 is a schematic diagram of an example of HARQ-ACK feedback according to an embodiment of the present invention;
fig. 11 is a second exemplary diagram of HARQ-ACK feedback according to an embodiment of the present invention;
fig. 12 is a third exemplary diagram illustrating HARQ-ACK feedback according to an embodiment of the present invention;
fig. 13 is a fourth exemplary diagram illustrating HARQ-ACK feedback according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of a UE according to an embodiment of the present invention;
fig. 15 is a second schematic structural diagram of a UE according to the embodiment of the present invention;
fig. 16 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 17 is a second schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 18 is a hardware diagram of a UE according to an embodiment of the present invention;
fig. 19 is a hardware schematic diagram of a network device according to an embodiment of the present invention.
Detailed Description
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 terms "first" and "second," and the like, in the description and in the claims of embodiments of the present invention are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first time limit requirement and the second time limit requirement etc. are used to distinguish between different time limit requirements and are not used to describe a particular order of time limit requirements.
In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specified. For example, a plurality of elements refers to two elements or more.
The term "and/or" herein is an association relationship describing an associated object, and means that there may be three relationships, for example, a display panel and/or a backlight, which may mean: there are three cases of a display panel alone, a display panel and a backlight at the same time, and a backlight alone. The symbol "/" herein denotes a relationship in which the associated object is or, for example, input/output denotes input or output.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The following explains some concepts and/or terms involved in the DCI scheduling method, apparatus, and system provided in the embodiments of the present invention.
Multiple Transmit Receive Point (TRP) transmission techniques: multiple TRP transmissions may increase the reliability or throughput performance of the transmission, e.g., a UE may receive the same data or different data from multiple TRPs.
A multi-TRP downlink URLLC transmission enhancement scheme:
scheme 1, Space Division Multiplexing (SDM): indicating n (n ≦ Ns) Transmission Configuration Identifier (TCI) states within a time slot, and the time-frequency resources between transmission opportunities (transmission allocation) are completely overlapped. Wherein, each transmission opportunity is one or more layers of the same (transport block, TB) set, and the one or more layers of sets are associated with a TCI state and a demodulation reference signal (DMRS) port or port set; a single coded codeword with one Redundancy Version (RV) is mapped onto all spatial layers or layer sets. From the UE perspective, the same mapping rule as Rel-15 is used to map different coded bits onto different layers or layer sets.
Scheme 2, Frequency Division Multiplexing (FDM): n (n ≦ Ns) TCI states are indicated in one time slot, and the frequency domain resources between transmission opportunities (transmission occasting) do not overlap. Wherein each non-overlapping frequency domain resource is associated to one TCI state; all non-overlapping frequency domain resources are associated to the same DMRS port/ports; all resource transmissions use a single coded codeword of one RV. From the UE perspective, the same codeword to layer mapping rule as Rel-15 is used for mapping onto all resources. Each non-overlapping frequency domain resource transmission employs a single encoded codeword of one RV. The RV corresponding to each non-overlapping frequency domain resource may be the same or different.
Scheme 3, Time Division Multiplexing (TDM): n (n ≦ Nt1) TCI states are indicated in one time slot, and the time domain resources do not overlap. Wherein, the TB transmitted by each transmission opportunity corresponds to a TCI state and an RV, and the transmission opportunity is transmitted in the time domain granularity of a mini-slot (mini-slot); all transmission opportunities within a slot employ the same MCS and the same one or more DMRS ports; multiple transmission opportunities may use the same or different RV/TCI states.
Scheme 4, Time Division Multiplexing (TDM): k slots indicate n (n ≦ K) TCI states. Wherein, the TB transmitted by each transmission opportunity corresponds to a TCI state and an RV; all transmission opportunities within the K slots employ the same MCS and the same one or more DMRS ports; multiple transmission opportunities may use the same or different RV/TCI states.
PDSCH reception processing time: after receiving DCI for scheduling a PDSCH, the UE receives the PDSCH in a time slot indicated by the DCI, and determines a time slot in which a Physical Uplink Control Channel (PUCCH) for feeding back a hybrid automatic repeat request-acknowledgement (HARQ-ACK) corresponding To the PDSCH is located according To K1, where K1 is a time slot offset number between the PUCCH and the PDSCH for feeding back the HARQ-ACK, which is obtained according To a PDSCH and HARQ feedback timing indication (PDSCH-To-HARQ feedback indicator) or a high-level parameter (dl-Data To UL-ACK) included in the downlink DCI. If the first uplink OFDM symbol of PUCCH for transmitting HARQ-ACK by UE is not earlier than OFDM symbol L 1 ，L 1 Defined as T after the last OFDM symbol of PDSCH transmitting TB proc,1 And the UE reports the effective HARQ-ACK.
And (3) feeding back a PUCCH determination mode of HARQ-ACK: the base station may configure one or more (at most 4) PUCCH resource sets (PUCCH resource sets) for each UE through Radio Resource Control (RRC) signaling, and the RRC configures or predefines the maximum number of bits of UCI payload that each resource set (RESET) can carry (e.g., the first RESET is at most 2 bits, the second and third RESETs are N1, N2, the fourth RESET is at most 1706 bits, and N1, N2 are configured by RRC), and each RESET may contain multiple PUCCH resources (the first RESET contains at most 32 PUCCHs, and the other RESETs each contain at most 8 PUCCHs). On the UE side, the UE needs to feed back HARQ-ACK after receiving the PDSCH, and in order to determine the PUCCH where the HARQ-ACK is fed back, the UE needs to determine a slot (slot) where the PUCCH is located through K1 in a Physical Downlink Control Channel (PDCCH) for scheduling the PDSCH; then, determining the RESET where the PUCCH is located according to the bit number of the HARQ-ACK needing feedback; within the determined RESET, it is determined which PUCCH (PUCCH included within the RESET) is specifically within the RESET according to a PUCCH Resource Indicator (PRI) field of the PDCCH (when PUCCH included within the RESET is not more than 8) or a PRI and a PDCCH first Control Channel Element (CCE) index (first CCE index). When feeding back HARQ-ACKs of multiple PDSCHs in one slot, the UE determines the PUCCH according to the PRI in the last dci (last dci) scheduling the PDSCHs or the PRI and the first CCE index.
HARQ-ACK codebook for single TRP: two types of HARQ-ACK codebooks are supported, namely a semi-static HARQ-ACK codebook (semi-static HARQ-ACK codebook) and a dynamic HARQ-ACK codebook (dynamic HARQ-ACK codebook). For the semi-static HARQ-ACK codebook, the UE may determine, according To parameters such as candidate PDSCH reception opportunity (candidate PDSCH reception allocation) configured by RRC, time domain resource allocation (PDSCH-time domain resource allocation) of the PDSCH, and feedback timing (dl-Data To UL-ACK or PDSCH-To HARQ-timing) from the PDSCH To the HARQ-ACK, all PDSCHs that may be fed back in a certain time slot may determine the HARQ-ACK codebook. For the dynamic HARQ-ACK codebook, the UE can determine the HARQ-ACK codebook according to the actually scheduled PDSCH, and the size of the HARQ-ACK codebook is usually smaller than that of the semi-static HARQ-ACK codebook because only the actually scheduled PDSCH is fed back. Which type of codebook the UE specifically uses is determined by RRC configuration. When the dynamic HARQ-ACK codebook is adopted, in order to prevent the situation that the number of HARQ-ACK bits considered by the receiving side and the transmitting side are not consistent due to the fact that the UE cannot correctly detect the scheduled PDCCH, the base station comprises a Downlink Assignment Index (DAI) in the DCI; the DAI is divided into two parts, namely a counter DAI (counter DAI) and a total number DAI (total DAI). The counter DAI is used to indicate the number of downlink transmissions scheduled to the DCI, and the total DAI indicates the total number of downlink transmissions scheduled to all carriers of the DCI.
The HARQ-ACK feedback for multiple PDSCHs with multiple TRPs supports two schemes:
in scheme 1, one PUCCH feeds back HARQ-ACK information corresponding to PDSCHs of multiple TRPs, i.e., joint HARQ-ACK feedback (joint HARQ-ACK feedback).
In scheme 2, multiple PUCCHs feed back HARQ-ACK information corresponding to PDSCHs of multiple TRPs, and one PUCCH feeds back HARQ-ACK information corresponding to a PDSCH of one TRP, that is, a separate HARQ-ACK feedback.
The embodiment of the invention provides a DCI scheduling method, a device and a system, wherein UE (user equipment) can receive K DCIs sent by network equipment and K repeated PDSCHs meeting preset conditions, and feeds back first HARQ-ACK information of the K repeated PDSCHs on a first PUCCH. Because the UE can receive multiple repetitions of the PDSCH according to the multiple DCI, that is, multiple repetitions of transmission of the PDSCH are scheduled by using the multiple DCI, the flexibility of DCI scheduling can be increased, and the accuracy of resources indicated in the UE transmission process can be improved.
The DCI scheduling method, the DCI scheduling device and the DCI scheduling system provided by the embodiment of the invention can be applied to a communication system. The method can be particularly applied to the process that the UE schedules the multiple repeated PDSCHs according to the multiple DCIs based on the communication system.
Fig. 1 is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system may include a UE 01 and a network device 02. Wherein, the UE 01 and the network device 02 can establish connection and communicate.
It should be noted that, in the embodiment of the present invention, the network device may include a plurality of TRPs.
A UE is a device that provides voice and/or data connectivity to a user, a handheld device with wired/wireless connectivity, or other processing device connected to a wireless modem. A UE may communicate with one or more core network devices via a Radio Access Network (RAN). The UE may be a mobile terminal such as a mobile phone (or "cellular" phone) and a computer having a mobile terminal, or a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device that exchanges speech and/or data with the RAN, such as a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and so on. The UE may also be referred to as a user agent (user agent) or a terminal device, etc.
The network device may be a base station. A base station is a device deployed in a RAN for providing wireless communication functions for UEs. The base stations may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functionality may differ, for example, in third generation mobile communication (3G) networks, referred to as base stations (NodeB); in an LTE system, referred to as an evolved NodeB (eNB or eNodeB); in fifth generation mobile communication (5G) networks, referred to as a gNB, and so on. As communication technology evolves, the name "base station" may change.
A DCI scheduling method, device, and system provided in the embodiments of the present invention are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Based on the communication system shown in fig. 1, an embodiment of the present invention provides a DCI scheduling method, which may include steps 201 to 206 described below, as shown in fig. 2.
Step 201, the network device sends K pieces of DCI.
In this embodiment of the present invention, the K pieces of DCI correspond to at least one configuration identifier, where K is an integer greater than 1.
In an embodiment of the present invention, each of the at least one configuration identifier is used to indicate one TRP.
It may be understood that the at least one TRP indicated by the at least one configuration identity may transmit K DCIs to the UE.
Optionally, in this embodiment of the present invention, the network device may include TRPs corresponding to the L configuration identifiers.
Step 202, the UE receives K pieces of DCI.
It should be noted that the network device may have transmitted K ' PDSCH repetitions scheduled by K ' DCI, and the UE detects K (K ≦ K ') DCI therein. Although the network device sends K' DCIs, some DCIs may not be detected among the UEs.
Step 203, the network device sends K repeated PDSCH messages according to the K DCI messages.
In an embodiment of the present invention, the K PDSCHs repeatedly satisfy a preset condition, where the preset condition includes at least one of: the New Data Indicator (NDI) with the same HARQ process number is not turned (i.e. the bit value of the NDI is not changed), K PDSCHs repeatedly satisfy the first time limit requirement, and K DCIs satisfy the second time limit requirement.
Optionally, in this embodiment of the present invention, each DCI in the K pieces of DCI includes a HARQ process number and NDI information of a scheduled PDSCH repetition.
Optionally, in the embodiment of the present invention, if HARQ process numbers of K PDSCH repetitions are the same and/or NDI information in K DCI information is not changed, the K PDSCH repetitions scheduled by the K DCI belong to the K PDSCH repetitions of the same TB.
It should be noted that, when K PDSCH repetitions satisfy the first time limit requirement, it can be understood that: a starting Orthogonal Frequency Division Multiplexing (OFDM) symbol (or simply "symbol") of the K PDSCH repetitions is less than or equal to a first threshold value, and/or an ending symbol of the K PDSCH repetitions is less than or equal to a second threshold value, both the first threshold value and the second threshold value being greater than or equal to 0. For example, K PDSCH repetitions occupy the same OFDM symbols within one slot or in the time domain.
It should be noted that the K pieces of DCI satisfying the second time limit requirement may be understood as: starting symbols of K PDCCHs for transmitting K DCIs are smaller than or equal to a third threshold value, and/or ending symbols of the K PDCCHs are smaller than or equal to a fourth threshold value, and the third threshold value and the fourth threshold value are both larger than or equal to 0. For example, K DCI are within one slot.
And step 204, the UE receives K repeated PDSCHs according to the K DCIs.
And step 205, the UE feeds back K repeated first HARQ-ACK information of the PDSCH on the first PUCCH.
Optionally, in this embodiment of the present invention, the number of HARQ-ACK information included in the first HARQ-ACK information is determined by the received first configuration signaling, or is predefined; the first configuration signaling is sent by the network device, and the first configuration signaling is used for indicating the number of the HARQ-ACK information included in the first HARQ-ACK information.
Optionally, in a possible implementation manner of the embodiment of the present invention, in a case that the UE does not support soft combining for K PDSCH repetitions, the first HARQ-ACK information includes K HARQ-ACK information, and each HARQ-ACK information corresponds to one PDSCH repetition; or, the first HARQ-ACK information includes one HARQ-ACK information; or the first HARQ-ACK information includes L HARQ-ACK information, each HARQ-ACK information in the L HARQ-ACK information corresponds to one configuration identifier, the first PUCCH includes L PUCCHs, the L PUCCHs are determined by L target DCIs, one target DCIs a last DCIs in a control resource set (core set) of one configuration identifier, each HARQ-ACK information is fed back in the PUCCH determined by the DCI in the core set corresponding to the configuration identifier, and L is a positive integer.
Optionally, in the embodiment of the present invention, when the first HARQ-ACK information includes one HARQ-ACK information, for any ACK/NACK bit in the one HARQ-ACK information, if at least one of values of any ACK/NACK bit corresponding to the K repeated PDSCH is ACK, the value of any ACK/NACK bit in the one HARQ-ACK information is ACK; and if all the values of any ACK/NACK bit corresponding to the K PDSCH repeated and respectively are NACK, the value of any ACK/NACK bit in the HARQ-ACK information is NACK.
Optionally, in the embodiment of the present invention, when the first HARQ-ACK information includes L pieces of HARQ-ACK information, for any ACK/NACK bit in each piece of HARQ-ACK information in the L pieces of HARQ-ACK information, if at least one of values of any ACK/NACK bit repeatedly and respectively corresponding to the K PDSCHs is ACK, the value of any ACK/NACK bit in the L pieces of HARQ-ACK information is ACK; and if all the values of any ACK/NACK bit corresponding to the K PDSCH repeated and respectively are NACK, the value of any ACK/NACK bit in the L HARQ-ACK information is NACK.
Optionally, in another possible implementation manner of the embodiment of the present invention, in a case that the UE supports repeated soft combining on K PDSCHs, the first HARQ-ACK information includes K HARQ-ACK information, where any HARQ-ACK information in the K HARQ-ACK information is: determining by the soft combining result of the PDSCH repetition corresponding to the transmission of any HARQ-ACK information and the at least one PDSCH repetition before the transmission; or, the first HARQ-ACK information includes one HARQ-ACK information, and one HARQ-ACK information is determined by the repeated soft combining results of the K PDSCHs; or the first HARQ-ACK information comprises L pieces of HARQ-ACK information, and the L pieces of HARQ-ACK information are determined by the repeated soft combining result of the K PDSCHs; each piece of HARQ-ACK information in the L pieces of HARQ-ACK information corresponds to one configuration identification, the first PUCCH comprises L PUCCHs, the L PUCCHs are determined by L target DCI, one target DCI is the last DCI in CORESET of one configuration identification, each piece of HARQ-ACK information is fed back in the PUCCH indicated by the DCI in the CORESET corresponding to the configuration identification, and L is a positive integer.
Optionally, in this embodiment of the present invention, the number of ACK/NACK bits included in the HARQ-ACK information is related to the number of TBs, the number of CBGs in a coding block group, and the like.
It should be noted that the above "at least one PDSCH repetition before" may be understood as: demodulating or decoding an earlier PDSCH repetition, or decoding an earlier DCI scheduled PDSCH repetition, or ending an OFDM symbol earlier PDSCH repetition in time, or occupying a lower or higher frequency domain PDSCH repetition if the OFDM symbols are the same, etc.
Step 206, the network device receives the first HARQ-ACK information of K repeated PDSCH on the first PUCCH.
The embodiment of the invention provides a DCI scheduling method, wherein UE (user equipment) can receive K DCIs sent by network equipment and K repeated PDSCHs meeting preset conditions, and feeds back first HARQ-ACK information of the K repeated PDSCHs on a first PUCCH. Because the UE can receive multiple repetitions of the PDSCH according to the multiple DCI, that is, multiple repetitions of transmission of the PDSCH are scheduled by using the multiple DCI, the flexibility of DCI scheduling can be increased, and the accuracy of resources indicated in the UE transmission process can be improved.
Optionally, in this embodiment of the present invention, with reference to fig. 2, as shown in fig. 3, after step 204, the DCI scheduling method provided in this embodiment of the present invention may further include step 301 described below.
Step 301, if the UE supports performing soft combining on K PDSCH repetitions in one time slot and there is overlap between one PDSCH repetition and at least one PDSCH repetition that ends before transmitting one PDSCH repetition, the UE determines that the processing time of one PDSCH repetition is M OFDM symbols.
In the embodiment of the invention, M comprises the number of overlapped OFDM symbols of a first PDSCH repetition and one PDSCH repetition, the first PDSCH repetition is the PDSCH repetition which has the overlap with one PDSCH repetition and has the largest number of overlapped OFDM symbols in at least one PDSCH repetition, and M is an integer larger than 0.
Optionally, in this embodiment of the present invention, the UE may increase the processing time of one PDSCH repetition to M-N 1 +d 1,1 + X OFDM symbols, X>1. Wherein, N1 is the number of OFDM symbols required for a PDSCH repeated decoding time, and is related to the terminal capability; d is a radical of 1,1 The number of OFDM symbols is adjusted according to specific conditions; x includes a soft combining processing time in relation to the number of overlapping OFDM symbols L2-L1 of the one PDSCH repetition with another PDSCH repetition, L1 being a starting OFDM symbol position of the one PDSCH repetition, L2 being an ending OFDM symbol position of a PDSCH repetition that overlaps and ends latest before the one PDSCH repetition.
For example, assume that three PDSCHs scheduled by K (K ═ 3) DCI (e.g., PDSCH repetition 1, PDSCH repetition 2, and PDSCH repetition 3) have the same HARQ process number and NDI is not flipped, and the UE supports soft combining capability. As shown in fig. 4, the PDSCH repetition 1 has a start symbol position of n and an end symbol position of n + 5; the starting sign position of the PDSCH repetition 2 is n +2, and the ending sign position is n + 6; the starting sign position of PDSCH repetition 3 is n +3, and the ending sign position is n + 7; PDSCH repetition 1 does not overlap with the PDSCH repetition ending before it, with a processing time of N1+ d 1,1 A symbol; PDSCH repetition 2 overlaps PDSCH repetition 1, and PDSCH repetition 1 ends before it, with a processing time of N1+ d 1,1 +X 1 A symbol, X 1 And L 1,2 -L 1,1 In connection with, L 1,1 Repeat 2 starting symbol position n +2, L for PDSCH 1,2 End symbol position n +5 for PDSCH repetition 1; PDSCH repetition 3 overlaps with both PDSCH repetition 1 and PDSCH repetition 2, both PDSCH repetition 1 and PDSCH repetition 2 ending before it, and PDSCH repetition 2 being the latest PDSCH repetition ending before PDSCH repetition 3 with a processing time of N1+ d 1,1 +X 2 A symbol, X 2 And L 2,2 -L 2,1 In connection with, L 2,1 Repeat the starting symbol position n +3, L of 3 for PDSCH 2,2 The end symbol position n +6 of 2 is repeated for the PDSCH.
In the embodiment of the present invention, the UE may determine the processing time of one PDSCH repetition according to the overlapping condition of the one PDSCH repetition and the previous PDSCH repetition.
Optionally, in this embodiment of the present invention, with reference to fig. 2, as shown in fig. 5, before step 205, the DCI scheduling method provided in the embodiment of the present invention may further include step 401 described below, and before step 206, the DCI scheduling method provided in the embodiment of the present invention may further include step 402 described below.
Step 401, under the condition of independent HARQ-ACK feedback, if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, the UE determines the first transmission resource.
In the embodiment of the present invention, the first transmission resource is transmission resource of one HARQ-ACK message or L HARQ-ACK messages, and the first transmission resource includes a first PUCCH.
Optionally, in the embodiment of the present invention, under the condition of independent HARQ-ACK feedback, if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, the UE may determine the first transmission resource according to a first predetermined rule.
Optionally, in this embodiment of the present invention, the step 401 may be specifically implemented by the following step 401 a.
Step 401a, under the condition of independent HARQ-ACK feedback, if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, the UE determines the first PUCCH according to the first DCI.
In the embodiment of the present invention, the first DCI is the last DCI in the DCI of the PDSCH of the scheduling target service in all CORESET corresponding to the first configuration identifier; the first configuration identifier is a configuration identifier corresponding to a CORESET where an Nth DCI scheduling K PDSCH repetitions is located, where N is greater than or equal to 1 and less than or equal to K, and N is an integer, or the first configuration identifier is a predetermined configuration identifier.
Optionally, in this embodiment of the present invention, the first configuration identifier is a configuration identifier corresponding to a core set where a first (N ═ 1) DCI scheduling K PDSCH repetitions is located; or, the first configuration identifier is a configuration identifier corresponding to a core set where the last (N ═ K) DCI scheduling the K PDSCH repetitions is located.
Optionally, in the embodiment of the present invention, the target service is all services or a specific service. All services may include an eMBB service, a URLLC service, and the like, and a specific service may be an eMBB service or a URLLC service.
Optionally, in this embodiment of the present invention, the first transmission resource may further include a first position, where the first position is a position of one HARQ-ACK information or L HARQ-ACK information in a first HARQ-ACK codebook, and the first HARQ-ACK codebook is an HARQ-ACK codebook transmitted on the first PUCCH.
Step 402, the network device determines a first transmission resource.
Optionally, in this embodiment of the present invention, the network device may determine the first PUCCH according to the first DCI.
Optionally, in a possible implementation manner of the embodiment of the present invention, the step 205 may be specifically implemented by a step 205a described below, and the step 206 may be specifically implemented by a step 206a described below.
Step 205a, if the first HARQ-ACK codebook is a semi-static HARQ-ACK codebook, the UE transmits a K included in the first HARQ-ACK codebook on the first PUCCH 1 In the position corresponding to the P-th candidate PDSCH receiver opportunity (candidate PDSCH reception opportunity), the position is reversedFirst HARQ-ACK information is fed.
In the embodiment of the present invention, K is 1 The candidate PDSCH receiver opportunities are candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, and K is more than or equal to 1 1 ≤K，1≤P≤K 1 And K is 1 And P are integers.
Optionally, in this embodiment of the present invention, if the first HARQ-ACK codebook is a semi-static HARQ-ACK codebook, the UE may transmit the K included in the first HARQ-ACK codebook on the first PUCCH 1 A first candidate PDSCH receiver opportunity or Kth candidate PDSCH receiver opportunity of the candidate PDSCH receiver opportunities 1 And feeding back the first HARQ-ACK information at the position corresponding to the candidate PDSCH receiving opportunity.
It can be understood that if P is 1, it means K included in the first HARQ-ACK codebook transmitted on the first PUCCH 1 Feeding back first HARQ-ACK information at a position corresponding to a first candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities; if P is equal to K 1 Meaning that the first HARQ-ACK codebook transmitted on the first PUCCH contains K 1 And feeding back the first HARQ-ACK information at the position corresponding to the last candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities.
Step 206a, if the first HARQ-ACK codebook is a semi-static HARQ-ACK codebook, the network device transmits the K included in the first HARQ-ACK codebook on the first PUCCH 1 And receiving the first HARQ-ACK information at a position corresponding to the P-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities.
Optionally, in another possible implementation manner of the embodiment of the present invention, the step 205 may be specifically implemented by a step 205b described below, and the step 206 may be specifically implemented by a step 206b described below.
Step 205b, if the first HARQ-ACK codebook is a dynamic HARQ-ACK codebook, the UE transmits K contained in the first HARQ-ACK codebook on the first PUCCH 2 And feeding back the first HARQ-ACK information at the position corresponding to the Qth counter DAI value in the DAI values of the different counters.
In the embodiment of the present invention, K is 2 DAI values of different counters are K DK is more than or equal to 1 and corresponds to DAI values of all different counters of the first configuration identifier in the CI 2 ≤K，1≤Q≤K 2 And K is 2 And Q are integers.
Optionally, in the embodiment of the present invention, if the first HARQ-ACK codebook is a dynamic HARQ-ACK codebook, the UE transmits the K included in the first HARQ-ACK codebook on the first PUCCH 2 The first counter DAI value or Kth counter in different counter down-allocation index DAI values 2 And feeding back the first HARQ-ACK information at the position corresponding to the DAI value of each counter.
It is to be understood that for the dynamic HARQ-ACK codebook, the HARQ-ACK bits for PDSCH repetitions that do not feed back HARQ-ACKs may or may not be included in the fed-back first HARQ-ACK information. If Q is 1, K contained in a first HARQ-ACK codebook transmitted on a first PUCCH 2 Feeding back first HARQ-ACK information at a position corresponding to a first counter DAI value in different counter DAI values; if Q ═ K 2 And K contained in a first HARQ-ACK codebook transmitted on the first PUCCH 2 And feeding back the first HARQ-ACK information at the position corresponding to the DAI value of the last counter in the DAI values of the different counters. When K is 2 If Q is 1, the first HARQ-ACK information is fed back at a position corresponding to the counter DAI value included in the first HARQ-ACK codebook transmitted on the first PUCCH.
Step 206b, if the first HARQ-ACK codebook is a dynamic HARQ-ACK codebook, the network device transmits the K included in the first HARQ-ACK codebook on the first PUCCH 2 And receiving the first HARQ-ACK information at the position corresponding to the Qth counter DAI value in the DAI values of the different counters.
Optionally, in this embodiment of the present invention, with reference to fig. 2, as shown in fig. 6, before step 205, the DCI scheduling method provided in this embodiment of the present invention may further include step 501 described below, and before step 206, the DCI scheduling method provided in this embodiment of the present invention may further include step 502 described below.
Step 501, under the condition of the feedback of the combined HARQ-ACK, if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, the UE determines the second transmission resource.
In the embodiment of the present invention, the second transmission resource is transmission resource of one HARQ-ACK message or L HARQ-ACK messages, and the second transmission resource includes a first PUCCH.
Optionally, in the embodiment of the present invention, under the condition of joint HARQ-ACK feedback, if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, the UE may determine the first transmission resource according to a second predetermined rule.
Optionally, in this embodiment of the present invention, the second transmission resource further includes a second location, where the second location is a location of one HARQ-ACK information or L HARQ-ACK information in a second HARQ-ACK codebook, and the second HARQ-ACK codebook is an HARQ-ACK codebook transmitted on the first PUCCH.
Step 502, the network device determines a second transmission resource.
Optionally, in another possible implementation manner of the embodiment of the present invention, the step 205 may be specifically implemented by a step 205c described below, and the step 206 may be specifically implemented by a step 206c described below.
Step 205c, if the second HARQ-ACK codebook is a semi-static HARQ-ACK codebook, the UE transmits the K included in the second HARQ-ACK codebook on the first PUCCH 3 And feeding back the first HARQ-ACK information at the position corresponding to the S-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities.
In the embodiment of the present invention, K is 3 The candidate PDSCH receiver opportunities are candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, or candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to all configuration identifiers; k is more than or equal to 1 3 ≤K，1≤S≤K 3 And K is 3 And S are integers.
Optionally, in the embodiment of the present invention, if Time Domain Resource Allocation (TDRA) of K PDSCH repetitions scheduled by K DCI is the same, the K PDSCH repetitions correspond to one candidate PDSCH receiving opportunity. It can be understood that K is now 3 1, S1, i.e. if the second HARQ-ACK codebook is halfAnd if the static HARQ-ACK codebook and the repeated TDRA of the K PDSCH scheduled by the K DCI are the same, the UE can feed back the first HARQ-ACK information at the position corresponding to the candidate PDSCH receiving opportunity contained in the second HARQ-ACK codebook transmitted on the first PUCCH.
Step 206c, if the second HARQ-ACK codebook is a semi-static HARQ-ACK codebook, the network device transmits the K included in the second HARQ-ACK codebook on the first PUCCH 3 And receiving the first HARQ-ACK information at a position corresponding to the S-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities.
Optionally, in another possible implementation manner of the embodiment of the present invention, the step 205 may be specifically implemented by a step 205d described below, and the step 206 may be specifically implemented by a step 206d described below.
Step 205d, if the second HARQ-ACK codebook is the dynamic HARQ-ACK codebook, the UE transmits the K included in the second HARQ-ACK codebook on the first PUCCH 4 And feeding back the first HARQ-ACK information at the position corresponding to the Tth counter DAI value in the DAI values of the different counters.
In the embodiment of the present invention, K is 4 The DAI values of different counters are all the DAI values of different counters in K DCI, and K is more than or equal to 1 4 ≤K，1≤T≤K 4 And K is 4 And T are integers.
Optionally, in the embodiment of the present invention, if the counter DAI values corresponding to the K PDSCH repetitions scheduled in the K pieces of DCI are equal, it can be understood that, at this time, K is equal 4 If the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook and the counter DAI values of K repeated PDSCHs scheduled by K DCIs are equal, the UE may feed back the first HARQ-ACK information at a position corresponding to the counter DAI value included in the second HARQ-ACK codebook transmitted on the first PUCCH.
Step 206d, if the second HARQ-ACK codebook is the dynamic HARQ-ACK codebook, the network device transmits the K included in the second HARQ-ACK codebook on the first PUCCH 4 And receiving the first HARQ-ACK information at the position corresponding to the Tth counter DAI value in the DAI values of the different counters.
It may be appreciated that the UE may determine the first PUCCH (possibly belonging to a CORESET of any configuration identity) from the DCI of the last PDSCH repetition of the schedule satisfying the timing requirements prior to transmission of the first HARQ-ACK; or the UE may determine the first PUCCH from the DCI of the last PDSCH repetition transmitted on the core set identified by the predetermined configuration before transmitting the first HARQ-ACK.
It can be understood that, in case that PUCCHs determined to feed back HARQ-ACK information indicated by DCI included in core sets associated to different configuration identities (one TRP for each configuration identity (index)) are different (or do not overlap), or in case of feeding back independent HARQ-ACK feedback, one or more PDSCHs included in core sets associated to the same configuration identity repeatedly determine the positions of respective PUCCH and HARQ-ACK bits.
It can be understood that, when it is determined that PUCCHs indicated by DCI included in CORESET associated with different configuration identifiers are the same (or overlap), or under the condition of joint HARQ-ACK feedback, if the UE does not support soft combining of K PDSCH repetitions, the UE may feed back HARQ-ACK information repeated by multiple PDSCHs in a joint HARQ-ACK codebook, or feed back one HARQ-ACK information whose value is an or of multiple corresponding HARQ-ACK bits; if the UE supports soft combining of K PDSCH repetitions, the UE may respectively feed back HARQ-ACK bits of the multiple PDSCH repetitions in the joint HARQ-ACK codebook, where each feedback is HARQ-ACK information obtained by itself (when there is no PDSCH repetition in the front) or after soft combining with the previous PDSCH repetition, or feeds back one HARQ-ACK information, and the value of the HARQ-ACK information is HARQ-ACK information after soft combining of the K PDSCH repetitions.
Exemplarily, the PUCCH feeding back HARQ-ACK information is exemplarily described below with reference to fig. 7, fig. 8, and fig. 9. Assuming that the UE receives 4 PDSCH repetitions scheduled by K ═ 4 DCI, where DCIi schedules pdschhi, i ═ 1,2,3,4, DCI in the shaded region indicates that the CORESET in which the DCI is located is associated with configuration identifier 1, and DCI in the unshaded region indicates that the CORESET in which the DCI is located is associated with configuration identifier 2, that is, L ═ 2. In the following description, it is assumed that PUCCH1 meets the timing (timing) requirement of PDSCH1, PDSCH2, PDSCH3, PDSCH4, and PUCCH2 meets the timing requirement of PDSCH1, PDSCH2, PDSCH3, PDSCH4, if not explicitly indicated, for example, the number of symbols from the last symbol of pdschhi to the first symbol of PUCCHj is greater than or equal to a specific time threshold, then PUCCHj meets the timing requirement of pdschhi, and the UE feeds back valid HARQ-ACK information, otherwise PUCCHj does not meet the timing requirement of pdschhi.
Wherein, HARQ-ACK (i) indicates one HARQ-ACK message, which is the HARQ-ACK message of PDSCHi. HARQ-ACK (i1, i2, … ik) indicates K pieces of HARQ-ACK information, which are HARQ-ACK information of PDSCHi1, HARQ-ACK information of PDSCHi2, and HARQ-ACK information of … … and PDSCHi. The HARQ-ACK (i1| i2| … | ik) indicates one HARQ-ACK information, and is obtained by performing bit summation on HARQ-ACK information obtained from pdschhi 1, pdschhi 2, … …, and PDSCHik, respectively. HARQ-ACK (i1+ i2+ … + ik) represents one HARQ-ACK message, which is obtained by soft combining PDSCHi1 and PDSCHi2 … … PDSCHik.
Several cases of feeding back HARQ-ACK information are as follows:
(1) as shown in fig. 7, PUCCH1 and PUCCH2 are in different slots. The UE may determine to feed back respective HARQ-ACK information on PUCCH1 within slot n + m1 and PUCCH2 within n + m2, respectively, according to respective DCI indications contained by the same CORESET identified by the configuration.
(2) Independent HARQ-ACK feedback within one slot, as shown in fig. 8. The UE may determine that the respective HARQ-ACK information is fed back on PUCCH1 and PUCCH2 within slot n + m, according to the respective DCI indications contained by the configuration identifier same CORESET, and PUCCH1 and PUCCH2 do not overlap or are independent HARQ-ACK feedback.
For the above (1) and (2):
A) assume that the UE does not support soft combining
If one HARQ-ACK information is repeatedly fed back per PDSCH, HARQ-ACK (1,3) is fed back on PUCCH1, and HARQ-ACK (2,4) is fed back on PUCCH 2.
If one HARQ-ACK information is repeatedly fed back by a plurality of PDSCHs, assuming that a PUCCH to which the HARQ-ACK is fed back is determined to be a PUCCH2 determined according to DCI4 according to a predetermined rule, one HARQ-ACK information, HARQ-ACK (1|2|3|4), is fed back on PUCCH 2.
If multiple PDSCHs repeatedly feed back L is 2 HARQ-ACK information, assuming that PUCCH1 and PUCCH2 all satisfy the timing requirements of PDSCH1, PDSCH2, PDSCH3 and PDSCH4, one HARQ-ACK information is fed back on PUCCH1 and one HARQ-ACK information is fed back on PUCCH 2. Both the HARQ-ACK information are HARQ-ACK (1|2|3| 4). Assuming that PUCCH1 satisfies the timing requirements of PDSCH1, PDSCH2, and PDSCH3 but does not satisfy the timing requirement of PDSCH4, HARQ-ACK information, HARQ-ACK (1|2|3), after receiving PDSCH3 is fed back on PUCCH 1; assuming that PUCCH2 satisfies the timing requirements of PDSCH1, PDSCH2, PDSCH3, and PDSCH4, HARQ-ACK information after receiving PDSCH4, HARQ-ACK (1|2|3|4), is fed back on PUCCH 2.
B) Assuming that the UE supports soft combining
If each PDSCH repeatedly feeds back one HARQ-ACK information, feeding back HARQ-ACK information after receiving PDSCH1 and HARQ-ACK information after receiving PDSCH3 on PUCCH1, namely HARQ-ACK (1,1+2+ 3); HARQ-ACK information after receiving PDSCH2 and HARQ-ACK information after receiving PDSCH4, namely HARQ-ACK (1+2,1+2+3+4), are fed back on PUCCH2 respectively.
If one piece of HARQ-ACK information is repeatedly fed back by a plurality of PDSCHs, assuming that the PUCCH fed back with the HARQ-ACK is determined to be PUCCH2 determined according to DCI4 according to a predetermined rule, one piece of HARQ-ACK information, HARQ-ACK (1+2+3+4), is fed back on PUCCH 2.
When the multiple PDSCHs repeatedly feed back L-2 HARQ-ACK information, one HARQ-ACK information is fed back on PUCCH1, and one HARQ-ACK information is fed back on PUCCH 2. Assuming that the PUCCH1 meets the timing requirements of PDSCH1, PDSCH2 and PDSCH3 but does not meet the timing requirement of PDSCH4, the HARQ-ACK information after receiving PDSCH3, HARQ-ACK (1+2+3), is fed back on PUCCH 1; assuming that PUCCH2 satisfies the timing requirements of PDSCH1, PDSCH2, PDSCH3, and PDSCH4, HARQ-ACK information after receiving PDSCH4, HARQ-ACK (1+2+3+4), is fed back on PUCCH 2.
(3) Joint HARQ-ACK feedback within one slot, as shown in fig. 9. The UE determines to be a joint HARQ-ACK feedback on PUCCH1 within slot n + m.
For (3), the joint HARQ-ACK codebook includes a concatenation of HARQ-ACK codebook 1 and HARQ-ACK codebook 2. The HARQ-ACK codebook corresponding to the PDSCH scheduled by the DCI included in configuration identifier 1 fed back in PUCCH1 in slot n + m is referred to as HARQ-ACK codebook 1, and the HARQ-ACK codebook corresponding to the PDSCH scheduled by the DCI included in configuration identifier 2 is referred to as HARQ-ACK codebook 2.
A) Assume that the UE does not support soft combining
If each PDSCH repeatedly feeds back one HARQ-ACK message, HARQ-ACK (1,3) is fed back on an HARQ-ACK codebook 1 and HARQ-ACK (2,4) is fed back on an HARQ-ACK codebook 2 in a combined HARQ-ACK codebook fed back on a PUCCH 1.
If a plurality of PDSCHs repeatedly feed back one HARQ-ACK message, assuming that it is determined according to a predetermined rule that the HARQ-ACK message fed back is located in the HARQ-ACK codebook 2 corresponding to the PDSCH scheduled by the DCI included in the configuration identifier 2, the HARQ-ACK codebook 2 in the joint HARQ-ACK codebook in the PUCCH1 includes one HARQ-ACK message, HARQ-ACK (1|2|3| 4).
If multiple PDSCHs repeatedly feed back L is 2 HARQ-ACK information, assuming that PUCCH1 satisfies the timing requirements of PDSCH1, PDSCH2, PDSCH3, and PDSCH4, HARQ-ACK codebook 1 and HARQ-ACK codebook 2 in the joint HARQ-ACK codebook in PUCCH1 respectively contain HARQ-ACK information, HARQ-ACK (1|2|3| 4).
B) Assuming that the UE supports soft combining
If each PDSCH repeatedly feeds back one HARQ-ACK message, feeding back HARQ-ACK message after receiving PDSCH1 and HARQ-ACK message after receiving PDSCH3, namely HARQ-ACK (1,1+2+3), in an HARQ-ACK codebook 1 in a combined HARQ-ACK codebook in a PUCCH 1; HARQ-ACK information after receiving the PDSCH2 and HARQ-ACK information after receiving the PDSCH4, namely HARQ-ACK (1+2,1+2+3+4), are fed back in the HARQ-ACK codebook 2.
If a plurality of PDSCHs repeatedly feed back one HARQ-ACK message, and the HARQ-ACK message fed back is determined to be located in the HARQ-ACK codebook 2 corresponding to the PDSCH scheduled by the DCI contained in the configuration identifier 2 according to a preset rule, the HARQ-ACK codebook 2 in the joint HARQ-ACK codebook in the PUCCH1 feeds back HARQ-ACK message HARQ-ACK (1+2+3+4) after receiving the PDSCH 4.
When the multiple PDSCHs repeatedly feed back L is 2 HARQ-ACK information, HARQ-ACK codebook 1 and HARQ-ACK codebook 2 in the joint HARQ-ACK codebook in PUCCH1 include HARQ-ACK information, HARQ-ACK (1|2|3|4), respectively. Or HARQ-ACK codebook 1 in the joint HARQ-ACK codebook in the PUCCH1 feeds back HARQ-ACK information after receiving the PDSCH3, namely HARQ-ACK (1+2+ 3); HARQ-ACK information after receiving the PDSCH4, HARQ-ACK (1+2+3+4), is fed back in HARQ-ACK codebook 2.
Optionally, in this embodiment of the present invention, if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, the total number DAI of the K repeated PDSCH in the K pieces of DCI corresponds to one PDSCH transmission, the DAI of the first counter is increased by 1, and the DAI of the second counter is equal to the DAI of the first counter. The first counter DAI is a counter DAI contained in a first DCI of the K DCIs, the second counter DAI is a counter DAI contained in other K-1 DCIs, and the other K-1 DCIs are DCIs except the first DCI of the K DCIs.
It should be noted that the total number DAI of K PDSCH repetitions included in K DCI corresponds to one PDSCH transmission, which may be understood as: the total number DAI contained in all the DCI in the K DCIs is increased by 1 corresponding to the K PDSCH repeated accumulation.
Optionally, in the embodiment of the present invention, under the condition of joint HARQ-ACK feedback, the above scheme may be adopted: the total number DAI of K repeated PDSCH transmissions contained in K DCI corresponds to one PDSCH transmission, the first counter DAI is increased by 1, and the second counter DAI is equal to the first counter DAI.
Optionally, in this embodiment of the present invention, if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, the total number DAI included in the K 'DCIs repeated by K' PDSCHs corresponds to one PDSCH transmission, the DAI of the third counter is increased by 1, and the DAI of the fourth counter is equal to the DAI of the third counter; the configuration identifier is a configuration identifier, wherein K ' is the number of repetitions of a DCI scheduling PDSCH included in the CORESET corresponding to the configuration identifier, the third counter DAI is a counter DAI included in a first DCI among the K ' DCIs, the fourth counter DAI is a counter DAI included in other K ' -1 DCIs, the other K ' -1 DCIs a DCI other than the first DCI among the K ' DCIs, K ' is less than or equal to K, and K ' is a positive integer.
Optionally, in the embodiment of the present invention, in the case of independent HARQ-ACK feedback, the above scheme may be adopted for K 'PDSCH repetitions scheduled by K' DCIs included in CORESET corresponding to one configuration identifier: the total number DAI of K 'PDSCH repetitions contained in K' DCI corresponds to one PDSCH transmission, the third counter DAI is incremented by 1, and the fourth counter DAI is equal to the third counter DAI.
Illustratively, the HARQ-ACK feedback is exemplarily described below with reference to fig. 10 and fig. 11. For two TRPs, TRP1 and TRP 2. TRP1 has a CC: CC0, TRP2 has two CCs: CC1 and CC 2. The DCI in the shaded region is a scheduled 4 PDSCH repetitions, and the DCI in the unshaded region is a scheduled other PDSCH. And (3) adopting a dynamic HARQ-ACK codebook, wherein DCI comprises (counter DAI, total DAI) and hybrid service HARQ-ACK feedback. All possible HARQ-ACK information for slots n to n +3 is fed back at slot n + m 1.
As shown in fig. 10, the individual HARQ-ACK feedback, the total dai (total dai) and the counter dai (counter dai) are counted only inside each TRP. The counter DAI for each TRP is initially equal to 0 and the total DAI is initially equal to 0.
TRP1：
Time slot n + 1: 1 piece of DCI is shared on 1 CC, and the DCI2 is the first repeated DCI of the PDSCH scheduled by the TRP, so that the counter DAI plus 1 of the DCI2 is equal to 1, and the total DAI plus 1 is equal to 1;
time slot n + 2: 1 CC has 1 DCI, the DCI5 is the second repeated DCI of the TRP scheduling PDSCH, the counter DAI is equal to the first DCI-DCI 2, the total DAI is not increased and still is 1;
time slot n + 3: there are 1 DCI on 1 CC, and DCI7 schedules other PDSCHs, then counter DAI plus 1 equals 2, and total DAI plus 1 equals 2.
TRP2：
Time slot n: there are 1 DCI in total on 2 CCs, and DCI1 schedules other PDSCHs, so that the counter DAI plus 1 is equal to 1, and the total DAI plus 1 is equal to 1;
time slot n + 1: 2 CCs are provided with 2 DCIs in total, the DCI3 is the first repeated DCI of the PDSCH scheduled by the TRP, and the DCI4 schedules other PDSCHs, so that the total DAI of the DCI3 and the DCI4 needs to be increased by 2 and is equal to 3; the counter DAI of DCI3 plus 1 equals 2, and the counter DAI of DCI4 plus 1 equals 3;
time slot n + 2: the total number of 1 DCI on 2 CCs is 1, and the DCI6 is the second DCI of the repeated PDSCH scheduled by the TRP, so that the total DAI of the DCI6 is not increased by 3, and the counter DAI is equal to the first DCI-DCI 2.
There are 2 HARQ-ACK information in HARQ-ACK codebook 1 of TRP 1: the positions of HARQ-ACK information of the PDSCH repetition scheduled by the DCI2 and the DCI5 are 1 corresponding to the counter DAI; the position of the HARQ-ACK information of other PDSCHs scheduled by DCI7 corresponds to its counter DAI being 2;
there are 3 HARQ-ACK information in total in HARQ-ACK codebook 2 of TRP 2: the position of the HARQ-ACK information of other PDSCHs scheduled by DCI1 corresponds to its counter DAI as 1; the position of HARQ-ACK information of the PDSCH repetition scheduled by the DCI3 and the DCI6 is 2; the position of HARQ-ACK information of other PDSCHs scheduled by DCI4 corresponds to its counter DAI being 3.
As shown in fig. 11, the joint HARQ-ACK feedback, the total number DAI and the counter DAI are counted together at 2 TRPs. counter DAI is initially equal to 0 and total DAI is initially equal to 0.
Time slot n: 1 DCI is totally arranged on 3 CCs, and if the DCI1 is other PDSCHs, the sum of counter DAI and 1 is equal to 1, and the sum of total DAI and 1 is equal to 1;
time slot n + 1: 3 total DCIs are arranged on 3 CCs, the DCI2 is the first DCI for scheduling the PDSCH repeatedly, the DCI3 is the second DCI for scheduling the PDSCH repeatedly, and the DCI4 is other PDSCHs, so that the total DAI of the DCI2, the DCI3 and the DCI4 needs to be increased by 2 and is equal to 3; the counter DAI of DCI2 plus 1 equals 2, the counter DAI of DCI3 equals the counter DAI of DCI2, and the counter DAI of DCI4 plus 1 equals 3;
time slot n + 2: there are 2 DCIs on 3 CCs, and DCI5 and DCI6 are the third and fourth DCIs scheduling PDSCH repetition, so the total DAI of DCI5 and DCI6 is not increased by 3, and counter DAI is equal to the first DCI — DCI2 is equal to 2.
Time slot n + 3: 1 DCI on 3 CCs, DCI7 schedules other PDSCHs, and then counter DAI plus 1 equals 4, and total DAI plus 1 equals 4.
The joint HARQ-ACK codebooks of the TRP1 and the TRP2 have 4 pieces of HARQ-ACK information in total, and the counter DAI of the position of the HARQ-ACK information of other PDSCHs scheduled by the DCI1 is 1; the positions of the HARQ-ACK information of 4 repeated PDSCHs scheduled by DCI2, DCI3, DCI5 and DCI6 correspond to their counter DAI being 2; the position of the HARQ-ACK information of other PDSCHs scheduled by DCI4 corresponds to its counter DAI being 3; the position of HARQ-ACK information of other PDSCHs scheduled by DCI7 corresponds to its counter DAI being 4.
Also exemplary, as shown in fig. 12 and 13, for two TRPs, TRP1 and TRP 2. TRP1 has a CC: CC0, TRP2 has two CCs: CC1 and CC 2. The DCI in the shaded region is one URLLC service for 2 scheduled PDSCH repetitions, and the DCI in the unshaded region is another URLLC service for 2 scheduled PDSCH repetitions. And a dynamic HARQ-ACK codebook is adopted, and DCI comprises (counter DAI, total DAI) and pure URLLC service HARQ-ACK feedback.
It should be noted that, for the description of fig. 12 and fig. 13, reference may be made to the description of fig. 10 and fig. 11, which is not repeated herein.
Optionally, in the embodiment of the present invention, after the step 204, the DCI scheduling method provided in the embodiment of the present invention may further include the following steps 601 and 602.
Step 601, reporting the indication information by the UE.
In the embodiment of the present invention, the indication information is used to indicate whether the UE has the capability of performing soft combining on K PDSCH repeatedly.
Optionally, in this embodiment of the present invention, the indication information may be specifically used to indicate whether the UE performs soft combining on multiple overlapping PDSCHs with the same HARQ process number.
Step 602, the network device receives indication information.
Fig. 14 shows a schematic diagram of a possible structure of a UE involved in the embodiment of the present invention. As shown in fig. 14, the UE 70 provided in the embodiment of the present invention may include: a receiving module 71 and a transmitting module 72.
The receiving module 71 is configured to receive K pieces of DCI, where the K pieces of DCI correspond to at least one configuration identifier, and K is an integer greater than 1; and receiving K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions, and the preset conditions comprise at least one of the following items: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement. A sending module 72, configured to feed back the first HARQ-ACK information of K PDSCH repetitions on the first PUCCH.
In a possible implementation manner, referring to fig. 14, as shown in fig. 15, a UE 70 provided in an embodiment of the present invention further includes: a determination module 73. Wherein, the determining module 73 is configured to, after the receiving module 71 receives the K PDSCH repetitions according to the K DCI, determine that processing time for one PDSCH repetition is M OFDM symbols, where M is an integer greater than 0, if the UE supports soft combining of the K PDSCH repetitions in one time slot and there is overlap between one PDSCH repetition and at least one PDSCH repetition that ends before transmission of the one PDSCH repetition; wherein, M includes the number of overlapping OFDM symbols of the first PDSCH repetition and one PDSCH repetition, and the first PDSCH repetition is the PDSCH repetition having the most number of overlapping OFDM symbols and overlapping with one PDSCH repetition in at least one PDSCH repetition.
In a possible implementation manner, the number of HARQ-ACK messages included in the first HARQ-ACK message is determined by the received first configuration signaling or is predefined; the first configuration signaling is used to indicate the number of HARQ-ACK information included in the first HARQ-ACK information.
In one possible implementation, under the condition that the UE does not support soft combining of K PDSCH repetitions, the first HARQ-ACK information includes K HARQ-ACK information, and each HARQ-ACK information corresponds to one PDSCH repetition; or, the first HARQ-ACK information comprises one HARQ-ACK information; or the first HARQ-ACK information includes L HARQ-ACK information, each HARQ-ACK information in the L HARQ-ACK information corresponds to one configuration identifier, the first PUCCH includes L PUCCHs, the L PUCCHs are determined by L target DCIs, one target DCIs a last DCIs in a CORESET of one configuration identifier, each HARQ-ACK information is fed back in the PUCCH determined by the DCI in the CORESET of the corresponding configuration identifier, and L is a positive integer.
In a possible implementation manner, under the condition that the first HARQ-ACK information includes one piece of HARQ-ACK information, for any ACK/NACK bit in the one piece of HARQ-ACK information, if at least one of values of any ACK/NACK bit corresponding to the K PDSCH repetition respectively exists as ACK, the value of any ACK/NACK bit in the one piece of HARQ-ACK information is ACK; and if all the values of any ACK/NACK bit corresponding to the K PDSCH repeated and respectively are NACK, the value of any ACK/NACK bit in one HARQ-ACK information is NACK.
In a possible implementation manner, under the condition that the first HARQ-ACK information includes L pieces of HARQ-ACK information, for any ACK/NACK bit in each piece of HARQ-ACK information in the L pieces of HARQ-ACK information, if at least one of values of any ACK/NACK bit corresponding to the K PDSCH repeated and respectively exists is ACK, the value of any ACK/NACK bit in the L pieces of HARQ-ACK information is ACK; and if all the values of any ACK/NACK bit corresponding to the K PDSCH repeated and respectively are NACK, the value of any ACK/NACK bit in the L HARQ-ACK information is NACK.
In one possible implementation manner, in a case that the UE supports soft combining for K PDSCH repetitions, the first HARQ-ACK information includes K HARQ-ACK information, and any HARQ-ACK information in the K HARQ-ACK information is: determining by a soft combining result of a PDSCH repetition corresponding to any HARQ-ACK information transmission and at least one PDSCH repetition before the transmission; or the first HARQ-ACK information comprises one HARQ-ACK information, and one HARQ-ACK information is determined by the soft combining results of the K repeated PDSCHs; or the first HARQ-ACK information comprises L pieces of HARQ-ACK information, and the L pieces of HARQ-ACK information are determined by the repeated soft combining results of the K PDSCHs; each HARQ-ACK information in the L HARQ-ACK information corresponds to one configuration identifier, the first PUCCH comprises L PUCCHs, the L PUCCHs are determined by L target DCIs, one target DCI is the last DCI in the CORESET of one configuration identifier, each HARQ-ACK information is fed back in the PUCCH indicated by the DCI in the CORESET corresponding to the configuration identifier, and L is a positive integer.
In a possible implementation manner, referring to fig. 14, as shown in fig. 15, a UE 70 provided in an embodiment of the present invention further includes: a determination module 73. The determining module 73 is configured to determine, under the condition of independent HARQ-ACK feedback, a first transmission resource if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, where the first transmission resource is a transmission resource of one HARQ-ACK information or L HARQ-ACK information, and the first transmission resource includes a first PUCCH.
In a possible implementation manner, the determining module 73 is specifically configured to determine, according to the first DCI, a first PUCCH; the first DCI is the last DCI in the DCIs of the PDSCH scheduling the target service in all CORESET corresponding to the first configuration identifier; the first configuration identifier is a configuration identifier corresponding to a CORESET where an Nth DCI for scheduling K PDSCH repetitions is located, where N is greater than or equal to 1 and less than or equal to K, and N is an integer, or the first configuration identifier is a predetermined configuration identifier.
In a possible implementation manner, the first transmission resource further includes a first position, where the first position is a position of one HARQ-ACK information or L HARQ-ACK information in a first HARQ-ACK codebook, and the first HARQ-ACK codebook is an HARQ-ACK codebook transmitted on the first PUCCH.
In a possible implementation manner, the sending module 72 is specifically configured to, if the first HARQ-ACK codebook is a semi-static HARQ-ACK codebook, transmit the K included in the first HARQ-ACK codebook on the first PUCCH 1 Feeding back first HARQ-ACK information at a position corresponding to the P-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities; wherein, K 1 The candidate PDSCH receiver opportunities are candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, and K is more than or equal to 1 1 ≤K，1≤P≤K 1 And K is 1 And P are integers.
In a possible implementation manner, the sending module 72 is specifically configured to send the first HARQ-ACK codebook on the first PUCCH including K if the first HARQ-ACK codebook is a dynamic HARQ-ACK codebook 2 Feeding back first HARQ-ACK information at a position corresponding to the Qth counter DAI value in the DAI values of different counters; wherein, K 2 The DAI values of the different counters are all the DAI values of the different counters corresponding to the first configuration identifier in the K DCI, and K is more than or equal to 1 2 ≤K， 1≤Q≤K 2 And K is 2 And Q are integers.
In a possible implementation manner, referring to fig. 14, as shown in fig. 15, a UE 70 provided in an embodiment of the present invention further includes: a determination module 73. The determining module 73 is configured to determine, under the condition of joint HARQ-ACK feedback, a second transmission resource if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, where the second transmission resource is a transmission resource of one HARQ-ACK information or L HARQ-ACK information, and the second transmission resource includes the first PUCCH.
In a possible implementation manner, the second transmission resource further includes a second location, where the second location is a location of one HARQ-ACK information or L HARQ-ACK information in a second HARQ-ACK codebook, and the second HARQ-ACK codebook is an HARQ-ACK codebook transmitted on the first PUCCH.
In a possible implementation manner, the sending module 72 is specifically configured to, if the second HARQ-ACK codebook is a semi-static HARQ-ACK codebook, transmit the K included in the second HARQ-ACK codebook on the first PUCCH 3 Feeding back first HARQ-ACK information at a position corresponding to the S-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities; wherein, K 3 The candidate PDSCH receiving opportunities are the candidate PDSCH receiving opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, or the candidate PDSCH receiving opportunities contained in the K PDSCH repetitions corresponding to all configuration identifiers; k is more than or equal to 1 3 ≤K，1≤S≤K 3 And K is 3 And S are each an integer.
In a possible implementation, if the time domain resource allocation TDRA of K PDSCH repetitions scheduled by K DCI is the same, the K PDSCH repetitions correspond to one candidate PDSCH reception opportunity.
In a possible implementation manner, the sending module 72 is specifically configured to, if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, transmit the K included in the second HARQ-ACK codebook on the first PUCCH 4 Feeding back first HARQ-ACK information at a position corresponding to the Tth counter DAI value in the DAI values of different counters; wherein, K 4 The DAI values of the different counters are all the DAI values of the different counters in the K DCI, and K is more than or equal to 1 4 ≤K，1≤T≤K 4 And K is 4 And T are integers.
In a possible implementation manner, if the TDRAs of the K PDSCH repetitions scheduled by the K DCI are the same, the DAI values of the counters corresponding to the K PDSCH repetitions are equal.
In a possible implementation manner, the sending module 72 is further configured to report indication information, where the indication information is used to indicate whether the UE has the capability of performing soft combining on K PDSCH repeatedly.
The UE provided in the embodiment of the present invention can implement each process implemented by the UE in the foregoing method embodiments, and for avoiding repetition, detailed descriptions are not repeated here.
The embodiment of the invention provides UE (user equipment), which can receive K DCIs (downlink control information) sent by network equipment and K repeated PDSCHs meeting preset conditions and feed back first HARQ-ACK (hybrid automatic repeat request-acknowledgement) information of the K repeated PDSCHs on a first PUCCH (physical uplink control channel). Because the UE can receive multiple repetitions of the PDSCH according to the multiple DCI, that is, multiple repetitions of transmission of the PDSCH are scheduled by using the multiple DCI, the flexibility of DCI scheduling can be increased, and the accuracy of resources indicated in the UE transmission process can be improved.
Fig. 16 shows a schematic diagram of a possible structure of a network device involved in the embodiment of the present invention. As shown in fig. 16, a network device 80 provided in an embodiment of the present invention may include: a transmitting module 81 and a receiving module 82.
The sending module 81 is configured to send K pieces of DCI, where the K pieces of DCI correspond to at least one configuration identifier, and K is an integer greater than 1; and sending K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions, and the preset conditions comprise at least one of the following items: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement. A receiving module 82, configured to receive first HARQ-ACK information for K PDSCH repetitions on a first PUCCH.
In a possible implementation manner, the sending module 81 is further configured to send a first configuration signaling before the receiving module 82 receives the first HARQ-ACK information of K PDSCH repetitions on the first PUCCH, where the first configuration signaling is used to indicate the number of HARQ-ACK information included in the first HARQ-ACK information.
In a possible implementation manner, referring to fig. 16, as shown in fig. 17, a network device 80 provided in an embodiment of the present invention further includes: a determination module 83. The determining module 83 is configured to determine a first transmission resource, where the first transmission resource is a transmission resource of the first HARQ-ACK information, and the first transmission resource includes a first PUCCH.
In a possible implementation manner, the determining module 83 is specifically configured to determine, according to the first DCI, a first PUCCH; the first DCI is the last DCI in the DCIs of the PDSCH scheduling the target service in all CORESET corresponding to the first configuration identifier; the first configuration identifier is a configuration identifier corresponding to a CORESET where an Nth DCI scheduling K PDSCH repetitions is located, where N is greater than or equal to 1 and less than or equal to K, and N is an integer, or the first configuration identifier is a predetermined configuration identifier.
In a possible implementation manner, the first transmission resource further includes a first location, where the first location is a location of the first HARQ-ACK information in a first HARQ-ACK codebook, and the first HARQ-ACK codebook is a HARQ-ACK codebook transmitted on the first PUCCH.
In a possible implementation manner, the receiving module 82 is specifically configured to, if the first HARQ-ACK codebook is a semi-static HARQ-ACK codebook, transmit the K included in the first HARQ-ACK codebook on the first PUCCH 1 Receiving first HARQ-ACK information at a position corresponding to a P-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities; wherein, K 1 The candidate PDSCH receiver opportunities are the candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, where K is greater than or equal to 1 1 ≤K，1≤P≤K 1 And K is 1 And P are integers.
In a possible implementation manner, the receiving module 82 is specifically configured to, if the first HARQ-ACK codebook is a dynamic HARQ-ACK codebook, transmit the K included in the first HARQ-ACK codebook on the first PUCCH 2 Receiving first HARQ-ACK information at a position corresponding to a Qth counter DAI value in DAI values of different counters; wherein, K 2 The DAI values of the different counters are all the DAI values of the different counters corresponding to the first configuration identifier in the K DCI, and K is more than or equal to 1 2 ≤K， 1≤Q≤K 2 And K is 2 And Q are integers.
In a possible implementation manner, referring to fig. 16, as shown in fig. 17, a network device 80 provided in an embodiment of the present invention further includes: a determination module 83. The determining module 83 is configured to determine a second transmission resource, where the second transmission resource is a transmission resource of the first HARQ-ACK information, and the second transmission resource includes the first PUCCH.
In a possible implementation manner, the second transmission resource further includes a second location, where the second location is a location of the first HARQ-ACK information in a second HARQ-ACK codebook, and the second HARQ-ACK codebook is an HARQ-ACK codebook transmitted on the first PUCCH.
In a possible implementation manner, the receiving module 82 is specifically configured to, if the second HARQ-ACK codebook is a semi-static HARQ-ACK codebook, transmit the K included in the second HARQ-ACK codebook on the first PUCCH 3 Receiving first HARQ-ACK information at a position corresponding to the S-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities; wherein, K 3 The candidate PDSCH receiver opportunities are candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, or candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to all configuration identifiers; k is more than or equal to 1 3 ≤K，1≤S≤K 3 And K is 3 And S are integers.
In a possible implementation, if the time domain resource allocation TDRA of K PDSCH repetitions scheduled by K DCI is the same, the K PDSCH repetitions correspond to one candidate PDSCH reception opportunity.
In a possible implementation manner, the receiving module 82 is specifically configured to, if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, transmit the K included in the second HARQ-ACK codebook on the first PUCCH 4 Receiving first HARQ-ACK information at a position corresponding to a Tth counter DAI value in DAI values of different counters; wherein, K 4 The DAI values of the different counters are all the DAI values of the different counters in the K DCI, and K is more than or equal to 1 4 ≤K，1≤T≤K 4 And K is 4 And T are integers.
In a possible implementation manner, if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, the total number DAI of the K repeated PDSCH transmissions included in the K DCI corresponds to one PDSCH transmission, the DAI of the first counter is increased by 1, and the DAI of the second counter is equal to the DAI of the first counter. The first counter DAI is a counter DAI contained in a first DCI of the K DCIs, the second counter DAI is a counter DAI contained in other K-1 DCIs, and the other K-1 DCIs are DCIs except the first DCI of the K DCIs.
In a possible implementation manner, if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, the total number DAI included in K 'DCIs repeated by K' PDSCHs corresponds to one PDSCH transmission, the DAI of the third counter is increased by 1, and the DAI of the fourth counter is equal to the DAI of the third counter; the configuration identifier is a configuration identifier, wherein K ' is the number of repetitions of a DCI scheduling PDSCH included in the CORESET corresponding to the configuration identifier, the third counter DAI is a counter DAI included in a first DCI among the K ' DCIs, the fourth counter DAI is a counter DAI included in other K ' -1 DCIs, the other K ' -1 DCIs a DCI other than the first DCI among the K ' DCIs, K ' is less than or equal to K, and K ' is a positive integer.
In a possible implementation manner, the receiving module 82 is further configured to receive indication information, where the indication information is used to indicate whether the UE has a capability of performing soft combining on K PDSCH repetitions.
The network device provided by the embodiment of the present invention can implement each process implemented by the network device in the above method embodiments, and for avoiding repetition, detailed descriptions are not repeated here.
The embodiment of the invention provides network equipment, which can send K DCIs and K PDSCH repetitions to UE (user equipment), so that the UE can feed back first HARQ-ACK information of the K PDSCH repetitions on a first PUCCH according to the K DCIs and the K PDSCH repetitions meeting preset conditions. Because the UE can receive multiple repetitions of the PDSCH according to the multiple DCI, that is, multiple repetitions of transmission of the PDSCH are scheduled by using the multiple DCI, the flexibility of DCI scheduling can be increased, and the accuracy of resources indicated in the UE transmission process can be improved.
Fig. 18 shows a hardware schematic diagram of a UE according to an embodiment of the present invention. As shown in fig. 18, the UE 110 includes but is not limited to: a radio frequency unit 111, a network module 112, an audio output unit 113, an input unit 114, a sensor 115, a display unit 116, a user input unit 117, an interface unit 118, a memory 119, a processor 120, and a power supply 121.
It should be noted that, as those skilled in the art can understand, the UE structure shown in fig. 18 does not constitute a limitation of the UE, and the UE may include more or less components than those shown in fig. 18, or combine some components, or arrange different components. For example, in the embodiment of the present invention, the UE includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The radio frequency unit 111 is configured to receive K pieces of DCI, where the K pieces of DCI correspond to at least one configuration identifier, and K is an integer greater than 1; receiving K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions; feeding back first HARQ-ACK information of K repeated PDSCH on a first PUCCH; wherein the preset condition comprises at least one of the following conditions: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement.
The embodiment of the invention provides UE (user equipment), which can receive K DCIs (downlink control information) sent by network equipment and K repeated PDSCHs meeting preset conditions and feed back first HARQ-ACK (hybrid automatic repeat request-acknowledgement) information of the K repeated PDSCHs on a first PUCCH (physical uplink control channel). Because the UE can receive multiple repetitions of the PDSCH according to the multiple DCI, that is, multiple repetitions of transmission of the PDSCH are scheduled by using the multiple DCI, the flexibility of DCI scheduling can be increased, and the accuracy of resources indicated in the UE transmission process can be improved.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 111 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 120; in addition, the uplink data is transmitted to the base station. Generally, the radio frequency unit 111 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 111 may also communicate with a network and other devices through a wireless communication system.
The UE provides the user with wireless broadband internet access through the network module 112, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 113 may convert audio data received by the radio frequency unit 111 or the network module 112 or stored in the memory 119 into an audio signal and output as sound. Also, the audio output unit 113 may also provide audio output related to a specific function performed by the UE 110 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 113 includes a speaker, a buzzer, a receiver, and the like.
The input unit 114 is used to receive an audio or video signal. The input unit 114 may include a Graphics Processing Unit (GPU) 1141 and a microphone 1142, and the graphics processor 1141 processes image data of a still picture or a video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 116. The image frames processed by the graphic processor 1141 may be stored in the memory 119 (or other storage medium) or transmitted via the radio frequency unit 111 or the network module 112. The microphone 1142 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 111 in case of the phone call mode.
The UE 110 also includes at least one sensor 115, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 1161 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 1161 and/or the backlight when the UE 110 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the UE attitude (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 115 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.
The display unit 116 is used to display information input by the user or information provided to the user. The display unit 116 may include a display panel 1161, and the display panel 1161 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), or the like.
The user input unit 117 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the UE. Specifically, the user input unit 117 includes a touch panel 1171 and other input devices 1172. Touch panel 1171, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., user operations on or near touch panel 1171 using a finger, stylus, or any suitable object or accessory). Touch panel 1171 can include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 120, receives a command from the processor 120, and executes the command. In addition, the touch panel 1171 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1171, the user input unit 117 may also include other input devices 1172. Specifically, the other input devices 1172 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein.
Further, touch panel 1171 can be overlaid on display panel 1161, and when touch panel 1171 detects a touch operation thereon or nearby, the touch operation can be transmitted to processor 120 to determine the type of touch event, and then processor 120 can provide a corresponding visual output on display panel 1161 according to the type of touch event. Although in fig. 18, the touch panel 1171 and the display panel 1161 are two independent components to implement the input and output functions of the UE, in some embodiments, the touch panel 1171 and the display panel 1161 may be integrated to implement the input and output functions of the UE, and the implementation is not limited herein.
The interface unit 118 is an interface through which an external device is connected to the UE 110. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 118 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within the UE 110 or may be used to transmit data between the UE 110 and external devices.
The memory 119 may be used to store software programs as well as various data. The memory 119 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, etc. Further, the memory 119 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 120 is a control center of the UE, connects various parts of the entire UE using various interfaces and lines, performs various functions of the UE and processes data by operating or executing software programs and/or modules stored in the memory 119, and calling data stored in the memory 119, thereby performing overall monitoring of the UE. Processor 120 may include one or more processing units; preferably, the processor 120 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 120.
UE 110 may also include a power supply 121 (e.g., a battery) for powering the various components, and preferably, power supply 121 may be logically coupled to processor 120 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.
In addition, the UE 110 includes some functional modules that are not shown, and are not described herein again.
Optionally, an embodiment of the present invention further provides a UE, which includes a processor 120 shown in fig. 18, a memory 119, and a computer program stored in the memory 119 and capable of running on the processor 120, where the computer program, when executed by the processor 120, implements the processes of the foregoing method embodiment, and can achieve the same technical effect, and details are not described 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 the processor 120 shown in fig. 18, the computer program implements the processes of the method embodiment, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be, for example, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Fig. 19 is a hardware diagram of a network device according to an embodiment of the present invention. As shown in fig. 19, the network device 130 includes: a processor 131, a transceiver 132, a memory 133, a user interface 134, and a bus interface 135.
A transceiver 132, configured to send K pieces of DCI, where the K pieces of DCI correspond to at least one configuration identifier, and K is an integer greater than 1; sending K repeated PDSCHs according to the K DCIs, wherein the K repeated PDSCHs meet preset conditions; receiving first HARQ-ACK information of K PDSCH repetitions on a first PUCCH; wherein the preset condition comprises at least one of the following conditions: the method has the same HARQ process number and NDI is not turned over, K PDSCHs repeatedly meet the first time limit requirement, and K DCIs meet the second time limit requirement.
The embodiment of the invention provides network equipment, which can send K DCIs and K PDSCH repetitions to UE (user equipment), so that the UE can feed back first HARQ-ACK information of the K PDSCH repetitions on a first PUCCH according to the K DCIs and the K PDSCH repetitions meeting preset conditions. Because the UE can receive multiple repetitions of the PDSCH according to the multiple DCI, that is, multiple repetitions of transmission of the PDSCH are scheduled by using the multiple DCI, the flexibility of DCI scheduling can be increased, and the accuracy of resources indicated in the UE transmission process can be improved.
Among other things, the processor 131 may be responsible for managing the bus architecture and general processing, and the processor 131 may be used to read and execute programs in the memory 133 to implement processing functions and control of the network device 130. The memory 133 may store data used by the processor 131 in performing operations. The processor 131 and the memory 133 may be integrated or may be provided separately.
In this embodiment of the present invention, the network device 130 may further include: a computer program stored on the memory 133 and executable on the processor 131, which computer program, when executed by the processor 131, performs the steps of the method provided by the embodiments of the present invention.
In fig. 19, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 131 and various circuits of memory represented by memory 133 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further in connection with embodiments of the present invention. The bus interface 135 provides an interface. The transceiver 132 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different UEs, the user interface 134 may also be an interface capable of interfacing externally to a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
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 the processor 131 shown in fig. 19, the computer program implements the processes of the method embodiment, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer readable storage medium is, for example, ROM, RAM, magnetic disk or 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 (38)

1. A DCI scheduling method is applied to User Equipment (UE), and is characterized in that the method comprises the following steps:
receiving K DCIs, wherein the K DCIs correspond to at least one configuration identifier, K is an integer larger than 1, and each configuration identifier in the at least one configuration identifier is respectively used for indicating a group to which the DCI belongs or one multi-transmission receiving point TRP;
receiving K Physical Downlink Shared Channel (PDSCH) repetitions according to the K DCIs, wherein the K PDSCH repetitions meet preset conditions;
feeding back first hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of the K repeated PDSCHs on a first Physical Uplink Control Channel (PUCCH);
the preset condition comprises at least one of the following conditions: the K PDSCHs repeatedly meet a first time limit requirement and the K DCIs meet a second time limit requirement; or,
the preset condition comprises at least one of that the K PDSCHs repeatedly meet a first time limit requirement and that the K DCIs meet a second time limit requirement, and the preset condition further comprises that the same HARQ process number is provided and new data indicates that NDI is not turned over;
wherein the first time limit requirement is that the starting Orthogonal Frequency Division Multiplexing (OFDM) of the K repeated PDSCH accords with being smaller than or equal to a first threshold value, and/or the ending symbol of the K repeated PDSCH is smaller than or equal to a second threshold value, and both the first threshold value and the second threshold value are larger than or equal to 0;
the second time limit requirement is that starting symbols of K physical downlink control channels PDCCH for transmitting the K pieces of DCI are smaller than or equal to a third threshold, and/or ending symbols of the K pieces of PDCCH are smaller than or equal to a fourth threshold, and both the third threshold and the fourth threshold are greater than or equal to 0.
2. The method of claim 1, wherein after receiving K PDSCH repetitions according to the K DCIs, the method further comprises:
if the UE supports soft combining of the K PDSCH repetitions in one time slot and one PDSCH repetition overlaps with at least one PDSCH repetition that ends before the one PDSCH repetition is transmitted, determining that the processing time of the one PDSCH repetition is M OFDM symbols, wherein M is an integer greater than 0;
wherein M includes the number of overlapping OFDM symbols of the first PDSCH repetition and the one PDSCH repetition, and the first PDSCH repetition is the PDSCH repetition that overlaps the one PDSCH repetition and has the largest number of overlapping OFDM symbols among the at least one PDSCH repetition.
3. The method of claim 1,
the number of HARQ-ACK information included in the first HARQ-ACK information is determined by the received first configuration signaling or is predefined; the first configuration signaling is used for indicating the number of HARQ-ACK information included in the first HARQ-ACK information.
4. The method of claim 3, wherein, in the case that the UE does not support soft combining for the K PDSCH repetitions,
the first HARQ-ACK information comprises K HARQ-ACK information, and each HARQ-ACK information corresponds to one PDSCH repetition; or,
the first HARQ-ACK information comprises one HARQ-ACK information; or,
the first HARQ-ACK information comprises L pieces of HARQ-ACK information, each piece of HARQ-ACK information in the L pieces of HARQ-ACK information corresponds to one configuration identification, the first PUCCH comprises L PUCCHs, the L PUCCHs are determined by L pieces of target DCI, one target DCI is the last DCI in a control resource set CORESET of one configuration identification, each piece of HARQ-ACK information is fed back in the PUCCH determined by the DCI in the CORESET of the corresponding configuration identification, and L is a positive integer.
5. The method according to claim 4, characterized in that in case the first HARQ-ACK information comprises the one HARQ-ACK information,
for any ACK/NACK bit in the HARQ-ACK information, if at least one of the values of the any ACK/NACK bit corresponding to the K PDSCH repeated and respectively exists as ACK, the value of the any ACK/NACK bit in the HARQ-ACK information is ACK; and if all the values of the ACK/NACK bits corresponding to the K PDSCHs repeatedly and respectively are NACK, the value of the ACK/NACK bit in the HARQ-ACK information is NACK.
6. The method according to claim 4, wherein in case the first HARQ-ACK information comprises the L HARQ-ACK information,
for any ACK/NACK bit in each HARQ-ACK information in the L HARQ-ACK information, if at least one of the values of the any ACK/NACK bit corresponding to the K PDSCH repeated and respectively exists as ACK, the value of the any ACK/NACK bit in the L HARQ-ACK information is ACK; and if all the values of the ACK/NACK bits corresponding to the K PDSCH repeated and respectively are NACK, the value of the ACK/NACK bit in the L HARQ-ACK information is NACK.
7. The method of claim 3, wherein in the case that the UE supports soft combining of the K PDSCH repetitions,
the first HARQ-ACK information comprises K HARQ-ACK information, and any HARQ-ACK information in the K HARQ-ACK information is as follows: determining by a soft combining result of a PDSCH repetition corresponding to the transmission of the any HARQ-ACK information and at least one PDSCH repetition before; or,
the first HARQ-ACK information comprises one HARQ-ACK information, and the one HARQ-ACK information is determined by soft combining results of the K PDSCH repetitions; or,
the first HARQ-ACK information comprises L HARQ-ACK information, and the L HARQ-ACK information is determined by soft combining results of the K PDSCH repetitions; each piece of HARQ-ACK information in the L pieces of HARQ-ACK information corresponds to one configuration identification, the first PUCCH comprises L pieces of PUCCH, the L pieces of PUCCH are determined by L pieces of target DCI, one target DCI is the last DCI in CORESET of one configuration identification, each piece of HARQ-ACK information is fed back in the PUCCH indicated by the DCI in the CORESET of the corresponding configuration identification, and L is a positive integer.
8. The method according to any one of claims 3 to 7, further comprising:
under the condition of independent HARQ-ACK feedback, if the first HARQ-ACK information is one HARQ-ACK information or L pieces of HARQ-ACK information, determining a first transmission resource, wherein the first transmission resource is the transmission resource of the HARQ-ACK information or the L pieces of HARQ-ACK information, and the first transmission resource comprises the first PUCCH.
9. The method of claim 8, wherein the determining the first transmission resource comprises:
determining the first PUCCH according to the first DCI;
the first DCI is the last DCI in DCIs of PDSCHs for scheduling target services in all CORESETs corresponding to the first configuration identifier; the first configuration identifier is a configuration identifier corresponding to a CORESET where an Nth DCI scheduling the K PDSCH repetitions is located, where N is greater than or equal to 1 and less than or equal to K, and is an integer, or the first configuration identifier is a predetermined configuration identifier.
10. The method of claim 8, wherein the first transmission resource further comprises a first location, wherein the first location is a location of the one or the L HARQ-ACK information in a first HARQ-ACK codebook, and wherein the first HARQ-ACK codebook is a HARQ-ACK codebook transmitted on the first PUCCH.
11. The method of claim 10, wherein the feeding back the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the first HARQ-ACK codebook is a semi-static HARQ-ACK codebook, K contained in the first HARQ-ACK codebook transmitted on the first PUCCH 1 Feeding back the first HARQ-ACK information at a position corresponding to the P-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities;
wherein,said K 1 The candidate PDSCH receiver opportunities are the candidate PDSCH receiver opportunities contained in the K PDSCH repeats corresponding to the first configuration identifier, and K is more than or equal to 1 1 ≤K，1≤P≤K 1 And K is 1 And P are integers.
12. The method of claim 10, wherein the feeding back the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the first HARQ-ACK codebook is a dynamic HARQ-ACK codebook, K contained in the first HARQ-ACK codebook transmitted on the first PUCCH 2 Feeding back the first HARQ-ACK information at a position corresponding to a Qth counter DAI value in different counter downlink assignment index DAI values;
wherein, K is 2 The DAI values of the different counters are all DAI values of the different counters corresponding to the first configuration identifier in the K DCI, and K is more than or equal to 1 2 ≤K，1≤Q≤K 2 And K is 2 And Q are integers.
13. The method according to any one of claims 3 to 7, further comprising:
under the condition of joint HARQ-ACK feedback, if the first HARQ-ACK information is one HARQ-ACK information or L HARQ-ACK information, determining a second transmission resource, wherein the second transmission resource is the transmission resource of the HARQ-ACK information or the L HARQ-ACK information, and the second transmission resource comprises the first PUCCH.
14. The method of claim 13, wherein the second transmission resource further comprises a second location, and wherein the second location is a location of the one or the L HARQ-ACK information in a second HARQ-ACK codebook, wherein the second HARQ-ACK codebook is a HARQ-ACK codebook transmitted on the first PUCCH.
15. The method of claim 14, wherein the feeding back the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the second HARQ-ACK codebook is a semi-static HARQ-ACK codebook, K contained in the second HARQ-ACK codebook transmitted on the first PUCCH 3 Feeding back the first HARQ-ACK information at a position corresponding to the S-th candidate PDSCH receiver opportunity in the candidate PDSCH receiver opportunities;
wherein, K is 3 The candidate PDSCH receiver opportunities are candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, or candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to all configuration identifiers; k is more than or equal to 1 3 ≤K，1≤S≤K 3 And K is 3 And S are integers.
16. The method of claim 15, wherein the K PDSCH repetitions correspond to one candidate PDSCH receiver opportunity if the time domain resource allocation, TDRA, of the K PDSCH repetitions scheduled by the K DCI is the same.
17. The method of claim 14, wherein the feeding back the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, K contained in the second HARQ-ACK codebook transmitted on the first PUCCH 4 Feeding back the first HARQ-ACK information at a position corresponding to the Tth counter DAI value in the DAI values of different counters;
wherein, K is 4 The DAI values of different counters are all the DAI values of different counters in the K DCI, and K is more than or equal to 1 4 ≤K，1≤T≤K 4 And K is 4 And T are integers.
18. The method of claim 17, wherein counter DAI values corresponding to K PDSCH repetitions are equal if TDRA of the K PDSCH repetitions scheduled by the K DCI is the same.
19. The method of claim 1, further comprising:
reporting indication information, wherein the indication information is used for indicating whether the UE has the capability of repeatedly performing soft combining on the K PDSCHs.
20. A Downlink Control Information (DCI) scheduling method is applied to network equipment, and is characterized by comprising the following steps:
sending K DCIs, wherein the K DCIs correspond to at least one configuration identifier, K is an integer greater than 1, and each configuration identifier in the at least one configuration identifier is used for indicating a group to which the DCI belongs or one multi-sending receiving point TRP;
sending K Physical Downlink Shared Channel (PDSCH) repetitions according to the K DCIs, wherein the K PDSCH repetitions meet preset conditions;
receiving first hybrid automatic repeat request-acknowledgement (HARQ-ACK) information of the K repeated PDSCH on a first Physical Uplink Control Channel (PUCCH);
the preset condition comprises at least one of the following conditions: the K PDSCHs repeatedly meet a first time limit requirement and the K DCIs meet a second time limit requirement; or,
the preset condition comprises at least one of that the K PDSCHs repeatedly meet a first time limit requirement and that the K DCIs meet a second time limit requirement, and the preset condition further comprises that the same HARQ process number is provided and new data indicates that NDI is not turned over;
wherein the first time limit requirement is that the starting Orthogonal Frequency Division Multiplexing (OFDM) of the K repeated PDSCH accords with being smaller than or equal to a first threshold value, and/or the ending symbol of the K repeated PDSCH is smaller than or equal to a second threshold value, and both the first threshold value and the second threshold value are larger than or equal to 0;
the second time limit requirement is that starting symbols of K physical downlink control channels PDCCH for transmitting the K pieces of DCI are smaller than or equal to a third threshold, and/or ending symbols of the K pieces of PDCCH are smaller than or equal to a fourth threshold, and both the third threshold and the fourth threshold are greater than or equal to 0.
21. The method of claim 20, wherein prior to the receiving the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH, the method further comprises:
and sending first configuration signaling, wherein the first configuration signaling is used for indicating the number of the HARQ-ACK information included in the first HARQ-ACK information.
22. The method of claim 20, further comprising:
determining a first transmission resource, wherein the first transmission resource is a transmission resource of the first HARQ-ACK information, and the first transmission resource comprises the first PUCCH.
23. The method of claim 22, wherein determining the first transmission resource comprises:
determining the first PUCCH according to the first DCI;
the first DCI is the last DCI in DCIs of PDSCHs for scheduling target services in all control resource sets CORESET corresponding to the first configuration identifier; the first configuration identifier is a configuration identifier corresponding to a CORESET where an Nth DCI scheduling the K PDSCH repetitions is located, where N is greater than or equal to 1 and less than or equal to K, and is an integer, or the first configuration identifier is a predetermined configuration identifier.
24. The method of claim 22, wherein the first transmission resource further comprises a first location, wherein the first location is a location of the first HARQ-ACK information in a first HARQ-ACK codebook, and wherein the first HARQ-ACK codebook is a HARQ-ACK codebook transmitted on the first PUCCH.
25. The method of claim 24, wherein receiving the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the first HARQ-ACK codebook is semi-staticA state HARQ-ACK codebook, K contained in the first HARQ-ACK codebook transmitted on the first PUCCH 1 Receiving the first HARQ-ACK information at a position corresponding to a P-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities;
wherein, K is 1 The candidate PDSCH receiver opportunities are the candidate PDSCH receiver opportunities contained in the K PDSCH repeats corresponding to the first configuration identifier, and K is more than or equal to 1 1 ≤K，1≤P≤K 1 And K is 1 And P are integers.
26. The method of claim 24, wherein receiving the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the first HARQ-ACK codebook is a dynamic HARQ-ACK codebook, K contained in the first HARQ-ACK codebook transmitted on the first PUCCH 2 Receiving the first HARQ-ACK information at a position corresponding to a Qth counter DAI value in different counter downlink assignment index DAI values;
wherein, K is 2 The DAI values of the different counters are all DAI values of the different counters corresponding to the first configuration identifier in the K DCI, and K is more than or equal to 1 2 ≤K，1≤Q≤K 2 And K is 2 And Q are integers.
27. The method of claim 20, further comprising:
determining a second transmission resource, wherein the second transmission resource is the transmission resource of the first HARQ-ACK information, and the second transmission resource comprises the first PUCCH.
28. The method of claim 27, wherein the second transmission resource further comprises a second location, wherein the second location is a location of the first HARQ-ACK information in a second HARQ-ACK codebook, wherein the second HARQ-ACK codebook is a HARQ-ACK codebook transmitted on the first PUCCH.
29. The method of claim 28, wherein receiving the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the second HARQ-ACK codebook is a semi-static HARQ-ACK codebook, K contained in the second HARQ-ACK codebook transmitted on the first PUCCH 3 Receiving the first HARQ-ACK information at a position corresponding to the S-th candidate PDSCH receiving opportunity in the candidate PDSCH receiving opportunities;
wherein, K is 3 The candidate PDSCH receiver opportunities are candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to the first configuration identifier, or candidate PDSCH receiver opportunities contained in the K PDSCH repetitions corresponding to all configuration identifiers; k is more than or equal to 1 3 ≤K，1≤S≤K 3 And K is 3 And S are integers.
30. The method of claim 29, wherein the K PDSCH repetitions correspond to one candidate PDSCH receiver opportunity if the time domain resource allocation, TDRA, of the K PDSCH repetitions scheduled by the K DCI is the same.
31. The method of claim 28, wherein receiving the first HARQ-ACK information for the K PDSCH repetitions on the first PUCCH comprises:
if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, K contained in the second HARQ-ACK codebook transmitted on the first PUCCH 4 Receiving the first HARQ-ACK information at a position corresponding to a Tth counter DAI value in DAI values of different counters;
wherein, K is 4 The DAI values of different counters are all the DAI values of different counters in the K DCI, and K is more than or equal to 1 4 ≤K，1≤T≤K 4 And K is 4 And T are integers.
32. The method of claim 28, wherein if the second HARQ-ACK codebook is a dynamic HARQ-ACK codebook, then
The total number DAI of the K PDSCHs repeatedly contained in the K DCIs corresponds to one PDSCH transmission, the DAI of a first counter is increased by 1, and the DAI of a second counter is equal to the DAI of the first counter; the first counter DAI is a counter DAI contained in a first DCI of the K DCIs, the second counter DAI is a counter DAI contained in other K-1 DCIs, and the other K-1 DCIs are DCIs except the first DCI of the K DCIs;
or, the total number DAI of K 'repeated K' DCIs corresponds to one PDSCH transmission, the third counter DAI is increased by 1, and the fourth counter DAI is equal to the third counter DAI; the configuration identifier is a configuration identifier, wherein K ' is the number of repetitions of a DCI scheduling PDSCH included in the CORESET corresponding to the configuration identifier, the third counter DAI is the counter DAI included in the first DCI of the K ' DCIs, the fourth counter DAI is the counter DAI included in the other K ' -1 DCIs, the other K ' -1 DCIs a DCI other than the first DCI in the K ' DCIs, K ' is less than or equal to K, and K ' is a positive integer.
33. The method of claim 20, further comprising:
receiving indication information, wherein the indication information is used for indicating whether a User Equipment (UE) has the capability of performing soft combining on the K PDSCHs repeatedly.
34. A User Equipment (UE), the UE comprising: the device comprises a receiving module and a sending module;
the receiving module is configured to receive K pieces of DCI, where the K pieces of DCI correspond to at least one configuration identifier, K is an integer greater than 1, and each configuration identifier in the at least one configuration identifier is used to indicate a packet or one multiple transmission receiving point TRP to which the DCI belongs; receiving K Physical Downlink Shared Channel (PDSCH) repetitions according to the K DCIs, wherein the K PDSCH repetitions meet preset conditions;
the sending module is configured to feed back first hybrid automatic repeat request-acknowledgement HARQ-ACK information for the K repeated PDSCHs on a first physical uplink control channel PUCCH;
the preset condition comprises at least one of the following conditions: the K PDSCHs repeatedly meet a first time limit requirement and the K DCIs meet a second time limit requirement; or,
the preset condition comprises at least one of that the K PDSCHs repeatedly meet a first time limit requirement and that the K DCIs meet a second time limit requirement, and the preset condition further comprises that the same HARQ process number is provided and new data indicates that NDI is not turned over;
wherein the first time limit requirement is that the starting Orthogonal Frequency Division Multiplexing (OFDM) of the K repeated PDSCH accords with being smaller than or equal to a first threshold value, and/or the ending symbol of the K repeated PDSCH is smaller than or equal to a second threshold value, and both the first threshold value and the second threshold value are larger than or equal to 0;
the second time limit requirement is that starting symbols of K physical downlink control channels PDCCH for transmitting the K pieces of DCI are smaller than or equal to a third threshold, and/or ending symbols of the K pieces of PDCCH are smaller than or equal to a fourth threshold, and both the third threshold and the fourth threshold are greater than or equal to 0.
35. A network device, characterized in that the network device comprises: a transmitting module and a receiving module;
the sending module is configured to send K pieces of DCI, where the K pieces of DCI correspond to at least one configuration identifier, K is an integer greater than 1, and each configuration identifier in the at least one configuration identifier is used to indicate a packet or one multiple-transmission-reception-point TRP to which the DCI belongs; sending K Physical Downlink Shared Channel (PDSCH) repetitions according to the K DCIs, wherein the K PDSCH repetitions meet preset conditions;
the receiving module is configured to receive first hybrid automatic repeat request-acknowledgement HARQ-ACK information for the K PDSCH repetitions on a first physical uplink control channel PUCCH;
the preset condition comprises at least one of the following conditions: the K PDSCHs repeatedly meet a first time limit requirement and the K DCIs meet a second time limit requirement; or,
the preset condition comprises at least one of that the K PDSCHs repeatedly meet a first time limit requirement and that the K DCIs meet a second time limit requirement, and the preset condition further comprises that the same HARQ process number is provided and new data indicates that NDI is not turned over;
wherein the first time limit requirement is that the starting Orthogonal Frequency Division Multiplexing (OFDM) of the K repeated PDSCH accords with being smaller than or equal to a first threshold value, and/or the ending symbol of the K repeated PDSCH is smaller than or equal to a second threshold value, and both the first threshold value and the second threshold value are larger than or equal to 0;
the second time limit is required to be that starting symbols of K physical downlink control channels PDCCH for transmitting the K pieces of DCI are smaller than or equal to a third threshold, and/or ending symbols of the K pieces of PDCCH are smaller than or equal to a fourth threshold, and both the third threshold and the fourth threshold are greater than or equal to 0.
36. A user equipment, UE, 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 DCI scheduling method according to any one of claims 1 to 19.
37. A network 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 DCI scheduling method according to any one of claims 20 to 33.
38. A communication system, characterized in that the communication system comprises a user equipment, UE, according to claim 34, and a network device according to claim 35; or,
the communication system comprises the UE of claim 36 and the network device of claim 37.
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