CN111435865B - Hybrid automatic repeat request response method, signaling and equipment - Google Patents

Hybrid automatic repeat request response method, signaling and equipment Download PDF

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CN111435865B
CN111435865B CN201910028216.1A CN201910028216A CN111435865B CN 111435865 B CN111435865 B CN 111435865B CN 201910028216 A CN201910028216 A CN 201910028216A CN 111435865 B CN111435865 B CN 111435865B
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harq
ack
information
ack codebook
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CN111435865A (en
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闫志宇
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China Academy of Information and Communications Technology CAICT
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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
    • 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
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a hybrid automatic repeat request response method, signaling and equipment. The method comprises the following steps: acquiring configuration information for respectively indicating the types of N HARQ-ACK codebooks, wherein the N HARQ-ACK codebooks are associated with 1 time unit; and determining the information of the codebook according to the type of the ith HARQ-ACK codebook. Further, the N HARQ-ACK codebooks are associated with M sub-time units; the configuration information is also used for indicating the type of the HARQ-ACK codebook corresponding to the M sub time units. The configuration signaling contains configuration information; the device is used for acquiring configuration information, determining the types of the N HARQ-ACK codebooks, determining the information of the ith HARQ-ACK codebook and sending the information, or the device is used for sending the configuration information and receiving the information of the HARQ-ACK codebook. The method and the device solve the problem that the HARQ-ACK feedback reliability, time delay and efficiency do not meet the requirements when the terminal equipment simultaneously supports the service types with different reliability and/or time delay requirements.

Description

Hybrid automatic repeat request response method, signaling and equipment
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a hybrid automatic repeat request response method and device.
Background
The use of the HARQ mechanism in the NR system improves the efficiency of data transmission. The network equipment sends downlink service data through a Physical Downlink Shared Channel (PDSCH), and after receiving the information service data, the terminal equipment feeds back Acknowledgement (ACK) or non-acknowledgement (NACK) information of the terminal equipment for receiving the downlink service data on a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH). The ACK and NACK information are collectively referred to as hybrid automatic repeat request acknowledgement information (HARQ-ACK).
Referring to the codebook generation method of HARQ-ACK in section 9.1 of 3GPP TS 38.213Vf30 in the prior art, the network device is configured with "semi-static" and "dynamic" codebook size determination methods corresponding to type 1 and type 2, respectively, through high-level signaling.
Existing NR systems primarily consider reliability requirements 1-10-1And eMBB service with the time delay requirement of more than 4-5 ms. Rel.16 NR systems will support reliability requirements up to 1-10-6And URLLC traffic with delay requirements within 1 ms. In addition, the terminal device may support more services with different reliability and delay requirements. For services with different time delay and reliability requirements, the requirements of the terminal equipment on reporting the HARQ-ACK on reliability, time delay and efficiency are also different. Introduction to the backgroundThe transmission efficiency using the HARQ-ACK codebook of type 1 is low, but the robustness of the HARQ-ACK codebook size is high; the transmission efficiency using the HARQ-ACK codebook of type 2 is high, but the reliability impact of the PDCCH receiving the HARQ-ACK codebook size is large.
If the terminal equipment supports two or more service types with different reliability and delay requirements at the same time, but the HARQ-ACK feedbacks corresponding to various services use the same codebook type, it is difficult to meet the difference requirements of the various service types on the HARQ-ACK feedback reliability, delay and efficiency. If the high layer signaling is configured to be "semi-static", the HARQ-ACK of the URLLC service with high reliability requirement is transmitted in the HARQ-ACK codebook of type 1, the transmission efficiency is low, and the reliability cannot meet the requirement in many cases. If the high-layer signaling is configured to be "dynamic", the HARQ-ACK with lower reliability requirement is transmitted in the HARQ-ACK codebook of type-2, which is affected by the transmission reliability of the PDCCH with low reliability, and the robustness of the size of the HARQ-ACK codebook is poor, which also results in that the reliability of the HARQ-ACK feedback does not meet the requirement.
Disclosure of Invention
The application provides a hybrid automatic repeat request response method, signaling and equipment, which solve the problem that the HARQ-ACK feedback reliability, time delay and efficiency do not meet the requirements due to the adoption of the conventional HARQ-ACK codebook size determining mode when terminal equipment simultaneously supports two or more service types with different reliability and/or time delay requirements.
The embodiment of the application provides a hybrid automatic repeat request response method, which comprises the following steps:
acquiring configuration information, wherein the configuration information is used for respectively indicating the types of N HARQ-ACK codebooks, the N HARQ-ACK codebooks are related to 1 time unit, and N is more than or equal to 2;
and determining the information of the ith HARQ-ACK codebook according to the type of the ith HARQ-ACK codebook.
Further, the embodiment of the present application further includes the following steps:
acquiring scheduling information, wherein the scheduling information is used for scheduling a target downlink shared channel and indicating the feedback of the HARQ-ACK information of the target downlink shared channel in the ith HARQ-ACK codebook of the time unit;
determining a physical downlink shared channel set containing the target downlink shared channel according to the type of the ith HARQ-ACK codebook; and the information of the ith HARQ-ACK codebook comprises HARQ-ACK information of all physical downlink shared channels in the physical downlink shared channel set.
Preferably, the N HARQ-ACK codebooks are associated with M sub time units within 1 time unit, where M ≧ 2; wherein each 1 sub-time unit is associated with at least 1 HARQ-ACK codebook.
Preferably, the configuration information is used to indicate the type of the HARQ-ACK codebook corresponding to the M sub-time units; the type of the ith HARQ-ACK codebook is the type of the HARQ-ACK codebook corresponding to the jth sub-time unit associated with the ith HARQ-ACK codebook.
Preferably, the M sub-time units are distinguished according to location, and further, the M sub-time units are time-divided or overlapped.
Preferably, the time resources occupied by the PUCCHs corresponding to the N HARQ-ACK codebooks are time-divided or overlapped.
Preferably, the time unit is 1 time slot.
Preferably, the type of the HARQ-ACK codebook comprises a semi-static HARQ-ACK codebook type and a dynamic HARQ-ACK codebook type.
The present application further provides a configuration signaling, which is used in the method according to any embodiment of the present application, and includes the following configuration information:
information indicating a time unit length;
information indicating the number of HARQ-ACK codebooks;
information representing each HARQ-ACK codebook type.
And the time resource position information occupied by the PUCCH corresponding to each HARQ-ACK codebook is shown.
The present application further provides a configuration signaling, which is used in the method according to any embodiment of the present application, and includes the following configuration information:
information indicating a time unit length;
information indicating the number and position of sub-time units;
information representing the HARQ-ACK codebook type corresponding to each sub-time unit;
and the time resource position information which is occupied by the PUCCH corresponding to the HARQ-ACK codebook associated with each sub-time unit is represented.
The present application further provides a device, configured to implement the method according to any embodiment of the present application, where the device is a terminal device, and is configured to acquire the configuration information, determine the types of the N HARQ-ACK codebooks, determine the information of the ith HARQ-ACK codebook, and send the information.
The present application further provides a device, configured to implement the method according to any embodiment of the present application, where the device is a network device and configured to send the configuration information and receive information of the HARQ-ACK codebook.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
configuring codebook types for all HARQ-ACK codebooks in the HARQ-ACK codebook set through configuration information, realizing different HARQ-ACK codebooks corresponding to HARQ-ACK feedbacks of service types with different reliability and/or time delay requirements through scheduling, and meeting the problem that when terminal equipment supports two or more service types with different reliability and/or time delay requirements, the requirements of the terminal equipment on the HARQ-ACK feedbacks reliability, time delay and efficiency are different.
The method comprises the steps that 1 time unit corresponds to a plurality of types of sub-time units in different time intervals, independent HARQ-ACK codebook determination modes are configured for the different types of sub-time units through configuration information, HARQ-ACK of service types with different reliability and/or time delay requirements can be fed back to the corresponding different types of sub-time units through scheduling, and the problem that when terminal equipment supports two or more service types with different reliability and/or time delay requirements, the requirements for HARQ-ACK feedback reliability, time delay and efficiency are different is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of an embodiment of a HARQ acknowledgement method according to the present invention;
fig. 2 is a schematic diagram of the positions of time resources occupied by PUCCH;
(a) a schematic diagram of a PUCCH position of time division;
(b) overlapping PUCCH location diagrams;
FIG. 3 is a flow chart of another embodiment of a HARQ acknowledgement method according to the present invention;
FIG. 4 is a diagram illustrating the locations of time resources occupied by sub-time units.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The HARQ-ACK information sent by the terminal device in the uplink timeslot n may be HARQ-ACK information of how many bits are specifically fed back for multiple downlink PDSCHs, that is, there are two determination methods for the size of the codebook of the HARQ-ACK:
one is a semi-static approach, referred to as codebook decision approach Type 1 (Type-1). The size of the codebook of the HARQ-ACK sent by the terminal device is related to a downlink timeslot included in the "HARQ feedback window", time resource configuration parameters of a PDSCH (PDSCH starting and length indication SLIV (or directly indicating a starting symbol S and a length L) corresponding to each row in a time domain resource allocation table) for standby in the downlink timeslot, uplink and downlink symbol configurations of the timeslot in a TDD scenario, and a transmission mode in which the network device sends downlink data to the terminal device. And by adopting a semi-static mode, the network equipment and the terminal equipment respectively have consistent determination results of the sizes of the received and sent HARQ-ACK codebooks. For example, the terminal device determines that the HARQ-ACK codebook fed back by a certain slot includes N1 bits of information according to the above factors. Then there are feedback bits of HARQ-ACK corresponding to the spare PDSCH in the HARQ-ACK codebook regardless of whether there is PDSCH transmission. Namely, the HARQ-ACK codebook corresponding to the semi-static HARQ-ACK codebook type corresponds to a preset physical downlink shared channel set. However, if only N2 PDSCHs transmit downlink data to the terminal device within the "HARQ feedback window", N2 is often much smaller than N1. Therefore, the HARQ-ACK codebook sent by the terminal equipment has a certain degree of redundancy, and the transmission efficiency of the HARQ-ACK is low. Therefore, the Type-1 codebook Type does not generate the HARQ-ACK which cannot be correctly received by the terminal device due to the codebook size error determined by the terminal device. But the Type-1 codebook Type has redundancy in most cases. Accordingly, HARQ-ACK transmission is inefficient.
The other is a dynamic mode, called codebook determination mode Type 2 (Type-2). The terminal equipment feeds back HARQ-ACK information only aiming at the PDSCH in the HARQ feedback window of the received downlink data, and the transmission efficiency of the HARQ-ACK can be improved. Namely, the HARQ-ACK codebook corresponding to the dynamic HARQ-ACK codebook type corresponds to the scheduled physical downlink shared channel set. However, the transmission of the physical downlink control channel PDCCH corresponding to the downlink data PDSCH is not 100% reliable, and the terminal device may lose some downlink control information DCI, so that the sizes of the codebooks for HARQ-ACK feedback determined by the terminal device and the network device are different, and finally the error rate of HARQ-ACK is high. To avoid such problems, the PDCCH introduces a Downlink Assignment Index (DAI) field. The DAI field includes two kinds, i.e., a Counter DAI (cumulative DAI) and a Total DAI (Total DAI), for identifying whether there is a PDCCH and a PDSCH that have been transmitted by the network device but are missed by the terminal device. However, the introduction of DAI cannot overcome 100% the difference in the codebook sizes of HARQ-ACK feedbacks determined by the terminal equipment and the network equipment due to the loss of some downlink control information DCI by the terminal equipment. In the following two cases, the codebook sizes of HARQ-ACK feedbacks determined by the terminal device and the network device are still different: (1) all 4 PDCCHs which are sent to the terminal equipment by the network equipment and have continuous values corresponding to the Counter DAI fields are lost on the terminal equipment side; (2) all PDCCHs which are sent to the terminal equipment by the network equipment and have the largest Total DAI field are lost on the terminal equipment side. Therefore, although the Type-2 codebook Type has high transmission efficiency of HARQ-ACK, the accuracy of HARQ-ACK transmission may be affected by the reliability of PDCCH.
According to the invention, independent HARQ-ACK codebook determination modes are configured for different types of time units through configuration information, and the time units of various types are positioned in different time intervals of 1 standard time unit. Or, configuring independent codebook determining modes for different codebook sets fed back by the terminal equipment through the configuration information, and solving the problem that the HARQ-ACK feedback reliability, time delay and efficiency do not meet the requirements due to the adoption of the existing HARQ-ACK codebook size determining mode when the terminal equipment simultaneously supports two or more service types with different reliability and/or time delay requirements.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a flowchart of an embodiment of a harq response method according to the present invention. The embodiment specifically includes the following steps 11-13:
step 11, obtaining configuration information, wherein the configuration information is used for respectively indicating the types of N HARQ-ACK codebooks, the N HARQ-ACK codebooks are related to 1 time unit, and N is more than or equal to 2;
preferably, the time unit is 1 time slot.
Preferably, the type of the HARQ-ACK codebook comprises a semi-static HARQ-ACK codebook type and a dynamic HARQ-ACK codebook type.
For example, the terminal device obtains configuration information, where the configuration information includes a codebook type for indicating each HARQ-ACK codebook in a HARQ-ACK codebook set, where the HARQ-ACK codebook set includes N HARQ-ACK codebooks, and the N HARQ-ACK codebooks are associated with 1 time unit.
In order to meet the requirement that the terminal equipment simultaneously supports two or more service types with different reliability and/or time delay requirements, the indication information can indicate the HARQ-ACK distribution corresponding to the PDSCH with different service types to be in different codebooks. One time unit may be associated with N HARQ-ACK codebooks. One time unit may be, for example, 1 Slot. The N HARQ-ACK codebooks associated with one time unit may be used to send different types of HARQ-ACKs to the network device. For example, the HARQ-ACK corresponding to the PDSCH of the eMBB service is located in the first HARQ-ACK codebook of Slot # n, and the HARQ-ACK corresponding to the PDSCH of the URLLC service is located in the second HARQ-ACK codebook of Slot # n. The correspondence between the PDSCH and the codebook index may be explicit or implicit. The PDCCH sent by the network device to the terminal device for scheduling the PDSCH can distinguish which HARQ-ACK codebook the HARQ-ACK corresponding to the scheduled PDSCH comprises. In an explicit mode, dedicated information is included in a PDCCH of a scheduled PDSCH to indicate HARQ-ACK codebook feedback of the PDSCH. By adopting an implicit mode, the format of the PDCCH, the PDCCH scrambling RNTI, the search space type where the PDCCH is located, the CORESET where the PDCCH is located, or the table index of PDSCH time domain allocation, the granularity of PDSCH frequency domain allocation, the timing information of the HARQ-ACK corresponding to the PDSCH, the maximum coding rate of the PUCCH corresponding to the PDSCH, and the terminal equipment can determine the HARQ-ACK codebook feedback of the PDSCH scheduled by the PDCCH. For example, the PDCCH scheduling the PDSCH of different traffic types uses different scrambling RNTIs (Radio Network temporary identities). The network equipment and the terminal equipment correspond to different HARQ-ACK codebooks through the HARQ-ACK of the PDSCH scheduled by the PDCCH with different preset scrambling RNTIs. By detecting the scrambled RNTI of the PDCCH, the terminal equipment can determine the HARQ-ACK feedback of the PDSCH scheduled by the PDCCH in which HARQ-ACK is. The correspondence between the PDSCH and the codebook index may also be preset. For example, the backup PDSCH and which HARQ-ACK codebook to associate with is preset between the terminal device and the network device.
In this embodiment, the terminal device receives configuration information, where the configuration information includes HARQ-ACK codebook types for indicating N codebooks, respectively. Namely, the method is used for indicating whether the HARQ-ACK codebook type corresponding to each of the N codebooks is type 1 or type 2 to the terminal equipment.
Optionally, the configuration information is indicated to the terminal device through RRC or MAC information.
It should be noted that, in this document, the HARQ-ACK codebook is associated with a time unit, which means that the HARQ-ACK codebook is transmitted in the time unit. For example, N HARQ-ACK codebooks are associated with 1 time unit, i.e., N HARQ-ACK codebooks are transmitted at 1 time unit.
Step 12, determining the information of the ith HARQ-ACK codebook according to the type of the ith HARQ-ACK codebook, wherein i is more than or equal to 1 and less than or equal to N;
for example, the terminal device determines a specific HARQ-ACK codebook type corresponding to the ith codebook according to the configuration information; and the terminal equipment determines and sends the HARQ-ACK codebook information of the ith codebook according to the specific HARQ-ACK codebook type.
According to the configuration information, the terminal device can determine whether the specific codebook type corresponding to the ith HARQ-ACK codebook is type 1 or type 2. According to the target HARQ-ACK codebook type, the terminal equipment can determine the information of the ith HARQ-ACK codebook.
Further, the embodiment of the present application further includes the following steps:
step 13, obtaining scheduling information, where the scheduling information is used to schedule a target downlink shared channel and to indicate HARQ-ACK information of the target downlink shared channel to be fed back in an ith HARQ-ACK codebook of the time unit;
in addition, a physical downlink shared channel set containing the target downlink shared channel is determined according to the type of the ith HARQ-ACK codebook, and the information of the ith HARQ-ACK codebook is further determined. The information of the ith HARQ-ACK codebook comprises HARQ-ACK information of the target downlink shared channel, and the information of the ith HARQ-ACK codebook corresponds to the physical downlink shared channel set.
The "the information of the ith HARQ-ACK codebook corresponds to the set of physical downlink shared channels" means that the information of the ith HARQ-ACK codebook includes ACK/NACK information of each physical downlink shared channel in the set of physical downlink shared channels.
For example, if the type of the ith HARQ-ACK codebook is semi-static, the physical downlink shared channel set corresponding to the HARQ-ACK fed back by the ith HARQ-ACK codebook is determined according to the downlink timeslot included in the "HARQ feedback window", the time resource configuration parameters of the PDSCH reserved in the downlink timeslot (the starting and length indication SLIV (or the starting symbol S and the length L) of each row in the time domain resource allocation table), the uplink and downlink symbol configuration of the timeslot in the TDD scenario, and the like. Further, if the terminal device receives the pth physical downlink shared channel in the physical downlink shared channel set, determining HARQ-ACK information corresponding to the pth physical downlink shared channel in the ith HARQ-ACK codebook according to a demodulation result of the pth physical downlink shared channel. And if the terminal equipment does not receive the P-th physical downlink shared channel in the physical downlink shared channel set, the HARQ-ACK information corresponding to the P-th physical downlink shared channel in the ith HARQ-ACK codebook is NACK. Thus, the terminal equipment can determine the information of the ith HARQ-ACK codebook. The information of the ith HARQ-ACK codebook comprises the HARQ-ACK information of the target downlink shared channel.
Preferably, the time resources occupied by the PUCCHs corresponding to the N HARQ-ACK codebooks are time-divided or overlapped.
Fig. 2 is a schematic diagram of the positions of the time resources occupied by the PUCCH, where (a) the PUCCH positions are time-divided, and (b) the PUCCH positions are overlapped.
In this embodiment, PUCCH resources corresponding to N HARQ-ACK codebooks may be time-divided as shown in fig. 2(a) below. Alternatively, PUCCH resources corresponding to N HARQ-ACK codebooks may also overlap in time as shown in fig. 2(b), which is not limited in this embodiment.
According to the scheme of the embodiment, the configuration information is used for configuring the codebook type for each HARQ-ACK codebook in the HARQ-ACK codebook set, different HARQ-ACK codebooks corresponding to HARQ-ACK feedbacks of service types with different reliability and/or time delay requirements can be realized through scheduling, and the problem that the requirements for the HARQ-ACK feedback reliability, time delay and efficiency are different when the terminal equipment supports two or more service types with different reliability and/or time delay requirements at the same time is solved.
Fig. 3 is a flowchart illustrating a harq response method according to another embodiment of the present invention. The embodiment specifically includes the following steps 21-23:
step 21, obtaining configuration information, wherein the configuration information is used for indicating the type of a HARQ-ACK codebook corresponding to M sub-time units in 1 time unit, and M is more than or equal to 2;
the M sub-time units are positioned in the interval of 1 time unit, and the M sub-time units comprise the jth sub-time unit; for transmitting N HARQ-ACK codebooks.
Preferably, the time unit is 1 time slot.
Preferably, the type of the HARQ-ACK codebook comprises a semi-static HARQ-ACK codebook type and a dynamic HARQ-ACK codebook type.
For example, one Slot (Slot) in an NR system includes
Figure BDA0001943284270000101
A symbol, the
Figure BDA0001943284270000102
The symbols may be divided in time into different Sub-slots (sSlot). E.g., a parameter set corresponding to a subcarrier spacing of 15KHz,
Figure BDA0001943284270000103
the
Figure BDA0001943284270000104
The multiple sbots can be sequentially divided into multiple sbots in time sequence, each sbot includes a preset number of symbols, and as shown in the example of fig. 4, 1 sbot is divided into 8 sbots, namely sbot #0, sbot #1 and sbot #7, and sbots are … … sbots. The 8 sSlot sequentially include 2, 1, 2, 1, and 1 symbols. Besides this way of dividing the sSlot, the 1 st slots can be divided into sSlot #8 and sSlot #9, and each of the sSlot #8 and the sSlot #9 includes 7 symbols. Alternatively, 1Slot is composed of 1 sSlot #10, where the sSlot #10 and the Slot are equal and include 14 symbols.
In this embodiment, the terminal device obtains the configuration information, where the configuration information includes information indicating respective HARQ-ACK codebook types in M sub-time units, and the M sub-time units are located in the time unit. As an example above, 1 time unit is 1 time Slot, M equals 8, and the sSlot #0, the Slot #1, … … sSlot #7 are 8 sub-time units, the 8 sub-time units being located in different intervals of the time unit. The configuration information includes respective HARQ-ACK codebook types of the 8 sub-time units. The HARQ-ACK codebook types corresponding to the 8 types of time units may be independent from each other. For example, the configuration information may indicate that the HARQ-ACK codebook type of the sbot #0, Slot #2, Slot #4, Slot #6 is a semi-static HARQ-ACK codebook type, i.e. codebook determination mode type 1; the HARQ-ACK codebook type indicating the sbot #1, Slot #3, Slot #5, Slot #7 is a dynamic HARQ-ACK codebook type, i.e. codebook determination type 2. Or the configuration information may indicate that the HARQ-ACK codebook type of the sblot #0 and the Slot #4 is a semi-static HARQ-ACK codebook type, that is, the codebook determination mode type 1; the HARQ-ACK codebook type indicating the sbot #1, the Slot #2, the Slot #3, the Slot #5, the Slot #6, and the Slot #7 is a dynamic HARQ-ACK codebook type, i.e., a codebook determination manner type 2.
Further, the configuration information is used for respectively indicating the types of the N HARQ-ACK codebooks. The specific way that the N HARQ-ACK codebooks are associated with 1 time unit, preferably, the N HARQ-ACK codebooks are associated with M sub time units within 1 time unit; the M sub-time units respectively correspond to one HARQ-ACK type, and each sub-time unit is positioned in different intervals of 1 time slot in time; wherein each 1 sub-time unit is associated with at least 1 HAEQ-ACK codebook.
It should be noted that, in the present document, the HARQ-ACK codebook is associated with a sub-time unit, which means that the HARQ-ACK codebook is transmitted in the sub-time unit. For example, N HARQ-ACK codebooks are associated with M time units, i.e., N HARQ-ACK codebooks are transmitted at M sub-time units. Further, 1 sub-time unit is associated with K HARQ-ACK codebooks, i.e. the K HARQ-ACK codebooks are transmitted in the 1 sub-time unit.
Step 22, determining a specific HARQ-ACK codebook type corresponding to the jth sub-time unit, determining HARQ-ACK codebook information according to the specific HARQ-ACK codebook type and sending the HARQ-ACK codebook information, wherein j is more than or equal to 1 and is less than or equal to M;
for example, the terminal device determines the specific HARQ-ACK codebook type of the jth sub-time unit according to the configuration information; and the terminal equipment determines HARQ-ACK codebook information according to the specific HARQ-ACK codebook type in the jth sub-time unit and sends the HARQ-ACK codebook information.
The type of the ith HARQ-ACK codebook is the type of the HARQ-ACK codebook corresponding to the jth sub-time unit associated with the ith HARQ-ACK codebook.
And the terminal equipment acquires the configuration information and can respectively determine the HARQ-ACK codebook types of the M sub-time units. The M sub-time units include a jth sub-time unit. According to the configuration information, the terminal equipment can determine the HARQ-ACK codebook type of the j sub-time unit. And when the terminal equipment sends the HARQ-ACK in the jth sub-time unit, determining the HARQ-ACK codebook information by using the codebook type and sending the HARQ-ACK codebook information.
If the terminal equipment determines that the HARQ-ACK codebook type of the jth sub-time unit is a semi-static HARQ-ACK codebook type, namely the codebook determination mode type 1, the terminal equipment determines a standby PDSCH associated with the jth sub-time unit, wherein the HARQ-ACK codebook information of the jth sub-time unit corresponds to each standby PDSCH. If the terminal equipment determines that the HARQ-ACK codebook type of the jth sub-time unit is the dynamic HARQ-ACK codebook type, namely the codebook determination mode type 2, the terminal equipment determines the PDSCH transmission associated with the jth sub-time unit, and the HARQ-ACK codebook information of the jth sub-time unit corresponds to each PDSCH transmission. In this embodiment, assuming that the terminal device determines that the HARQ-ACK codebook type of the sSlot #1 is the codebook determination type 1 according to the configuration information, the HARQ-ACK codebook information sent by the terminal device in the jth sub-time unit corresponds to the standby PDSCH associated with the sSlot #1 and determined in the semi-static codebook manner. Optionally, the backup PDSCH associated with the sSlot #1 is configured by the network device to the terminal device through the indication information.
Further, the embodiment of the present application further includes the following steps:
step 23, obtaining scheduling information, where the scheduling information is used to schedule a target downlink shared channel and to indicate HARQ-ACK information of the target downlink shared channel to be fed back in the ith HARQ-ACK codebook;
and determining a physical downlink shared channel set containing the target downlink shared channel according to the type of the ith HARQ-ACK codebook, and further determining the information of the ith HARQ-ACK codebook.
The information of the ith HARQ-ACK codebook comprises HARQ-ACK information of the target downlink shared channel, and the information of the ith HARQ-ACK codebook corresponds to the physical downlink shared channel set.
FIG. 4 is a diagram illustrating the locations of time resources occupied by sub-time units.
The M sub-time units are distinguished by location. Here, the position refers to a relationship between the symbol constituting the sub time unit and all the symbols in the entire time unit. For example, 1 time slot is 1slot and includes 14 symbols, the symbols constituting the sub-time slot #1 are 3 rd to 4 th symbols, and the symbols constituting the sub-time slot #2 are 5 th to 6 th symbols. Further preferably, the positions of the M sub-time units are each independently configurable.
Further, the M sub-time units are time-divided or partially overlapping. In one case, the M types of sub-time units are located in different intervals of 1 time unit, and the M types of sub-time units do not overlap each other in time. The sub-time units of, for example, the sSlot #0 to sSlot #10 shown in fig. 2 are in different intervals each within 1 slot. It can be said that at least 2 of the M sub-time units are mutually time-divided, i.e. do not overlap in time.
In another case, the M types of sub-time units may also overlap in time, for example, Slot #8 and each of the sSlot #0 to sSlot #3 overlap in time. There is an overlap in time between Slot #9 and each of the sSlot #4 to sSlot # 7. There is an overlap in time between Slot #10 and each of the sSlot #0 to sSlot # 9. That is, at least 2 of the M sub-time units overlap each other.
In this embodiment, 1 time unit is 1 time slot, M is equal to 11, M sub-time units correspond to the sSlot #0 to sSlot #10, and the positions of the 11 sub-time units are all located in 1 time unit. The configuration information includes HARQ-ACK codebook types of the 11 types of time units. The HARQ-ACK codebook types associated with the 11 types of sub-time units may be independent of each other. The HARQ-ACK codebook types associated with the same sub-time unit may be the same. In the time unit or sub-time unit of this embodiment, as also shown in fig. 2, preferably, the time resources occupied by the corresponding PUCCHs in any of the N HARQ-ACK codebooks are time-divided or overlapped.
According to the scheme of the embodiment, 1 time unit corresponds to M sub-time units in different time intervals, an independent HARQ-ACK codebook determining mode is configured for the sub-time units of different types through configuration information, HARQ-ACK of service types with different reliability and/or time delay requirements can be fed back to the time units of different types corresponding to the HARQ-ACK, and the problem that when terminal equipment supports two or more service types with different reliability and/or time delay requirements, the requirements for HARQ-ACK feedback reliability, time delay and efficiency are different is solved.
The present application further provides a configuration signaling, which is used in the method according to any embodiment of the present application, and includes the following configuration information:
information indicating a time unit length;
information indicating the number N of HARQ-ACK codebooks;
information representing each HARQ-ACK codebook type.
And the time resource position information occupied by the PUCCH corresponding to each HARQ-ACK codebook is shown.
The present application further provides a configuration signaling, which is used in the method according to any embodiment of the present application, and includes the following configuration information:
information indicating a time unit length;
information indicating the number M and position of the sub-time units;
information representing the HARQ-ACK codebook type corresponding to each sub-time unit;
and the time resource position information which is occupied by the PUCCH corresponding to the HARQ-ACK codebook associated with each sub-time unit is represented.
The present application further provides a device, configured to implement the method according to any embodiment of the present application, where the device is a terminal device, and is configured to acquire the configuration information, determine the types of the N HARQ-ACK codebooks, determine the information of the ith HARQ-ACK codebook, and send the information.
In one embodiment of the present invention, a terminal device obtains configuration information, where the configuration information is used to indicate types of N HARQ-ACK codebooks, respectively, and the N HARQ-ACK codebooks are associated with 1 time unit; the terminal equipment determines a specific codebook type corresponding to the ith HARQ-ACK codebook according to the configuration information; and the terminal equipment determines the information of the ith HARQ-ACK codebook according to the specific codebook type.
In another embodiment of the present invention, a terminal device obtains configuration information, where the configuration information is used to respectively indicate HARQ-ACK codebook types corresponding to M sub-time units, where the M sub-time units are located in 1 time unit, and the M sub-time units include a jth sub-time unit; the terminal equipment determines the specific HARQ-ACK codebook type of the jth sub-time unit according to the configuration information; and the terminal equipment determines HARQ-ACK codebook information according to the specific HARQ-ACK codebook type in the jth sub-time unit and sends the HARQ-ACK codebook information.
The present application further provides a device, configured to implement the method according to any embodiment of the present application, where the device is a network device and configured to send the configuration information and receive information of the HARQ-ACK codebook.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions.
It should also be noted that 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.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (12)

1. A hybrid automatic repeat request response method is characterized by comprising the following steps:
acquiring configuration information, wherein the configuration information is used for respectively indicating the types of N HARQ-ACK codebooks, the N HARQ-ACK codebooks are related to 1 time unit, and N is more than or equal to 2;
according to the firstiA type of HARQ-ACK codebook, determining the secondiInformation of the individual HARQ-ACK codebooks;
the HARQ-ACK codebook type comprises a semi-static HARQ-ACK codebook type and a dynamic HARQ-ACK codebook type.
2. The method of claim 1, further comprising the steps of:
obtaining scheduling information, wherein the scheduling information is used for scheduling a target downlink shared channel and indicating the HARQ-ACK information of the target downlink shared channel in the time unitiIndividual HARQ-ACK codebook feedback;
according to the said firstiType determination packet of HARQ-ACK codebookA physical downlink shared channel set containing the target downlink shared channel; the first mentionediThe information of each HARQ-ACK codebook comprises HARQ-ACK information of all physical downlink shared channels in the physical downlink shared channel set.
3. The method of claim 1,
the N HARQ-ACK codebooks are associated with M sub-time units in 1 time unit, wherein M is more than or equal to 2;
wherein each 1 sub-time unit is associated with at least 1 HARQ-ACK codebook.
4. The method of claim 3,
the configuration information is used for indicating the type of the HARQ-ACK codebook corresponding to the M sub-time units;
the first mentionediA type of HARQ-ACK codebook being the second one associated therewithjAnd the type of the HARQ-ACK codebook corresponding to the sub time unit.
5. The method of claim 3, wherein the M sub-time units are differentiated by location.
6. A method according to any one of claims 1 to 5, wherein the time unit is 1 time slot.
7. The method according to any one of claims 1 to 5,
and the time resources occupied by the PUCCHs corresponding to the N HARQ-ACK codebooks are time-division or overlapped.
8. A method according to any one of claims 3 to 5, wherein the positions of the M sub-time units are time-divided or overlapped.
9. A configuration signaling apparatus, for use in the method according to any of claims 1 to 8, wherein the configuration signaling includes the following configuration information:
information indicating a time unit length;
information indicating the number of HARQ-ACK codebooks;
information indicating each HARQ-ACK codebook type;
and the time resource position information occupied by the PUCCH corresponding to each HARQ-ACK codebook is shown.
10. A configuration signaling apparatus, for use in the method according to any of claims 1 to 8, wherein the configuration signaling includes the following configuration information:
information indicating a time unit length;
information indicating the number and position of sub-time units;
information representing the HARQ-ACK codebook type corresponding to each sub-time unit;
and the time resource position information which is occupied by the PUCCH corresponding to the HARQ-ACK codebook associated with each sub-time unit is represented.
11. An apparatus for the method as claimed in any one of claims 1 to 8, wherein the apparatus is configured to obtain the configuration information, determine the types of the N HARQ-ACK codebooks, and determine the secondiAnd transmitting the information of the HARQ-ACK codebook.
12. An apparatus, configured to perform the method according to any one of claims 1 to 8, wherein the apparatus is configured to transmit the configuration information and receive information of the HARQ-ACK codebook.
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