CN112787772A - HARQ feedback method, device and storage medium for SPS PDSCH - Google Patents

HARQ feedback method, device and storage medium for SPS PDSCH Download PDF

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CN112787772A
CN112787772A CN201911089349.6A CN201911089349A CN112787772A CN 112787772 A CN112787772 A CN 112787772A CN 201911089349 A CN201911089349 A CN 201911089349A CN 112787772 A CN112787772 A CN 112787772A
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value
pdsch transmission
sps pdsch
harq
ack feedback
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司倩倩
高雪娟
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to CN201911089349.6A priority Critical patent/CN112787772A/en
Priority to PCT/CN2020/119305 priority patent/WO2021088577A1/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
    • 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
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • 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
    • H04L1/1896—ARQ related signaling

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

Abstract

The invention discloses a method, a device and a storage medium for HARQ feedback of SPS (semi-persistent scheduling) PDSCH, which relate to the technical field of communication and are used for enabling HARQ-ACK feedback information of the SPS PDSCH to be better fed back and reducing the problem caused by discarding the feedback information, and the method comprises the following steps: receiving a time slot offset K value set between PDSCH transmission configured by network side equipment through high-level signaling and a corresponding HARQ-ACK feedback position, wherein the K value set comprises at least one K value; receiving a DCI for activating SPS PDSCH transmission, wherein a first K value in a K value set is indicated in the DCI; and when determining that the PUCCH resource corresponding to SPS PDSCH transmission in the time slot indicated by the first K value is an invalid PUCCH resource, delaying HARQ-ACK feedback information corresponding to SPS PDSCH transmission to the time slot indicated by the second K value in the K value set for feedback.

Description

HARQ feedback method, device and storage medium for SPS PDSCH
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a HARQ feedback method and apparatus for SPS PDSCH, and a storage medium.
Background
Currently, in a 5G system, a terminal may transmit Uplink Hybrid Automatic Repeat reQuest acknowledgement (HARQ-ACK) information to a base station through a Physical Uplink Control CHannel (PUCCH). In the 5G NR Rel-15, only HARQ-ACK feedback information of one Semi-Persistent Scheduling (SPS) Physical Downlink Shared CHannel (PDSCH) is allowed to be transmitted in one PUCCH.
A shorter SPS PDSCH transmission period may be supported in NR Rel-16 than in NR Rel-15, and the new period may be less than or equal to 1 slot. HARQ-ACK feedback information for transmitting multiple SPS PDSCH in one PUCCH will be supported. For a Time Division Duplex (TDD) scenario, because under one SPS PDSCH configuration, a slot offset between SPS PDSCH transmission and a corresponding HARQ-ACK feedback position is indicated by activating Downlink Control Information (DCI), and only one slot offset value can be indicated in the activated DCI, there may be a case where PUCCH resources used by HARQ-ACK feedback corresponding to the SPS PDSCH collide with Downlink symbols indicated by a base station, and at this Time, the terminal cannot transmit corresponding HARQ-ACK feedback Information, thereby possibly causing excessive discard of HARQ feedback transmitted by the short-period SPS PDSCH.
Disclosure of Invention
The embodiment of the application provides a HARQ feedback method and device of an SPS (semi-persistent scheduling) PDSCH and a storage medium, which are used for reducing or avoiding the problem of lowered transmission performance of the SPS PDSCH caused by discarding HARQ-ACK feedback information corresponding to SPS PDSCH transmission.
In a first aspect, a HARQ feedback method for SPS PDSCH is provided, including:
receiving a time slot offset K value set between PDSCH transmission configured by network side equipment through high-level signaling and a corresponding hybrid automatic repeat request-acknowledgement HARQ-ACK feedback position, wherein the K value set comprises at least one K value;
receiving Downlink Control Information (DCI) for activating the SPS PDSCH transmission, wherein a first K value in the set of K values is indicated in the DCI;
and when determining that the physical uplink control link PUCCH resources corresponding to the SPS PDSCH transmission in the time slot indicated by the first K value are invalid PUCCH resources, delaying HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to the time slot indicated by a second K value in the K value set for feedback.
In one possible implementation, the physical uplink control link PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource, and includes:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
In a possible implementation manner, the K values in the set of K values are arranged in order from small to large, and the second K value is a next K value of the first K value;
delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to the time slot indicated by the second K value in the K value set for feedback, specifically:
and delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission until the time slot indicated by the next K value is fed back.
In one possible implementation manner, the delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission until the time slot indicated by the next K value is fed back includes:
and if the time slot indicated by the next K value contains effective PUCCH resources, transmitting HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot indicated by the next K value.
In a possible implementation manner, if the slot corresponding to the next K value does not include a valid PUCCH resource, the method further includes:
discarding HARQ-ACK feedback information corresponding to the SPS PDSCH transmission; alternatively, the first and second electrodes may be,
and sequentially delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission according to the sequence of the K values in the K value set until the time slot indicated by the last K value in the K value set does not include the effective PUCCH resource, and discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission.
In a second aspect, a HARQ feedback method for SPS PDSCH is provided, including:
configuring a time slot offset K value set between PDSCH transmission and a corresponding hybrid automatic repeat request-acknowledgement HARQ-ACK feedback position for a terminal through high-level signaling, wherein the K value set comprises at least one K value;
sending Downlink Control Information (DCI) for activating SPS (physical downlink shared channel) PDSCH transmission to the terminal, wherein the DCI indicates a first K value in the K value set;
and when determining that the physical uplink control link PUCCH resources corresponding to the SPS PDSCH transmission in the time slot indicated by the first K value are invalid PUCCH resources, receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by a second K value in the K value set.
In one possible implementation, the physical uplink control link PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource, and includes:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
In a possible implementation manner, the K values in the set of K values are arranged in order from small to large, and the second K value is a next K value of the first K value;
then, said receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the second K value in the set of K values specifically includes:
and receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the next K value.
In one possible implementation, the receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the slot indicated by the next K value includes:
and if the time slot indicated by the next K value contains effective PUCCH resources, receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission fed back in the time slot indicated by the next K value through the PUCCH resources.
In a third aspect, a terminal is provided, including:
a first receiving unit, configured to receive a set of slot offset K values between PDSCH transmission configured by a network side device through a high-level signaling and a corresponding HARQ-ACK feedback position, where the set of K values includes at least one K value;
a second receiving unit, configured to receive downlink control information DCI for activating the SPS PDSCH transmission, where the DCI indicates a first K value in the set of K values;
and a delaying unit, configured to delay, when it is determined that a physical uplink control link PUCCH resource corresponding to the SPS PDSCH transmission in a slot indicated by the first K value is an invalid PUCCH resource, HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to a slot indicated by a second K value in the set of K values for feedback.
In one possible implementation, the physical uplink control link PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource, and includes:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
In a possible implementation manner, when the K values in the K value set are arranged in order from small to large, and the second K value is a next K value of the first K value, the delay unit is specifically configured to:
and delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission until the time slot indicated by the next K value is fed back.
In one possible implementation, the delay unit is further configured to:
and when the time slot indicated by the next K value contains effective PUCCH resources, transmitting HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the next K value.
In a possible implementation manner, when the slot corresponding to the next K value does not include a valid PUCCH resource, the delay unit is further configured to:
discarding HARQ-ACK feedback information corresponding to the SPS PDSCH transmission; alternatively, the first and second electrodes may be,
and sequentially delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission according to the sequence of the K values in the K value set until the time slot indicated by the last K value in the K value set does not include the effective PUCCH resource, and discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission.
In a fourth aspect, a network-side device is provided, including:
a configuration unit, configured to configure, for a terminal through a high-level signaling, a set of slot offset K values between a PDSCH transmission and a corresponding HARQ-ACK feedback position, where the set of K values includes at least one K value;
a sending unit, configured to send, to the terminal, downlink control information DCI for activating SPS PDSCH transmission, where the DCI indicates a first K value in the set of K values;
a receiving unit, configured to receive HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in a slot indicated by a second K value in the set of K values when it is determined that a physical uplink control link PUCCH resource corresponding to the SPS PDSCH transmission in the slot indicated by the first K value is an invalid PUCCH resource.
In one possible implementation, the physical uplink control link PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource, and includes:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
In a possible implementation manner, when the K values in the set of K values are arranged in order from small to large, and the second K value is a next K value of the first K value, the receiving unit is specifically configured to:
and receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the next K value.
In one possible implementation manner, the receiving unit is further configured to:
and when the time slot indicated by the next K value contains effective PUCCH resources, receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission fed back in the time slot indicated by the next K value through the PUCCH resources.
In a fifth aspect, the present application further provides a computer storage medium having stored thereon a computer program for implementing the HARQ feedback method for SPS PDSCH, which program, when executed by a processing unit, implements the steps of the method of the first aspect.
In a sixth aspect, the present application further provides a computer storage medium having stored thereon a computer program for implementing the HARQ feedback method for SPS PDSCH, which program, when executed by a processing unit, implements the steps of the method of the second aspect.
In this embodiment of the application, a terminal may receive a time slot offset K value set between a PDSCH transmission configured by a network side device through a high-level signaling and a corresponding HARQ-ACK feedback position, where the K value set includes at least one K value, and may further receive downlink control information DCI sent by the network side device and used to activate the SPS PDSCH transmission, where the DCI is used to indicate a first K value in the K value set, and further, when a PUCCH resource corresponding to the SPS PDSCH transmission in a time slot indicated by the first K value is determined to be an invalid PUCCH resource, may delay HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to a time slot indicated by a second K value in the K value set for feedback. That is to say, after delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to the time slot indicated by the first K value for feedback, if there is no valid PUCCH resource in the time slot indicated by the first K value, the HARQ-ACK feedback information may be continuously delayed to the time slot that can be indicated by other K values in the K set for feedback, so that the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission may be better uploaded to the network side device, thereby reducing or avoiding the problem of SPS PDSCH transmission performance degradation caused by discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission, and thus improving the transmission performance of the SPS PDSCH transmission.
And when the delayed time slot has the HARQ-ACK feedback information of the dynamic PDSCH, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be fed back on the basis of not changing the feedback codebook, so that the problem of the SPS PDSCH transmission performance reduction caused by discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be further reduced or avoided.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a diagram illustrating HARQ feedback of an SPS PDSCH in the related art;
fig. 2 is a flowchart of a HARQ feedback method for SPS PDSCH according to an embodiment of the present application;
fig. 3 is a schematic diagram of HARQ feedback delay of SPS PDSCH in embodiment 1 according to an embodiment of the present application;
fig. 4 is a schematic diagram of HARQ feedback delay of SPS PDSCH in embodiment 2 according to an embodiment of the present application;
fig. 5 is a schematic diagram of HARQ feedback delay of an SPS PDSCH in case 2 according to an embodiment of the present application;
fig. 6 is a schematic diagram of HARQ feedback delay of SPS PDSCH in embodiment 3 according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a network-side device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the technical solutions of the present invention. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments described in the present application are within the scope of the protection of the technical solution of the present invention.
Some concepts related to the embodiments of the present application are described below.
(1) The network side device is a device for providing a wireless communication function for the terminal, and includes but is not limited to: a Base station (gNB) in 5G, a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home Base station (e.g., home evolved node B, or home node B, HNB), a Base Band Unit (BBU), a transmission point (TRP), a Transmission Point (TP), a mobile switching center (TP), and the like. The base station in the present application may also be a device that provides the terminal with a wireless communication function in other communication systems that may appear in the future.
(2) A terminal is a device that can provide voice and/or data connectivity to a user. For example, the terminal device includes a handheld device, an in-vehicle device, and the like having a wireless connection function. Currently, the terminal device may be: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety, a wireless terminal in smart city (smart city), or a wireless terminal in smart home (smart home), and the like.
In a 5G system, Semi-Persistent Scheduling (SPS) Physical Downlink Shared CHannel (PDSCH) transmission and PDSCH (i.e., dynamic PDCSH) transmission with a corresponding Physical Downlink Control CHannel (PDCCH) are supported. When the SPS PDSCH service is configured, the higher layer signaling may correspondingly configure a Radio Network Temporary Identity (RNTI) corresponding to the SPS, which is used to scramble the PDCCH for the SPS PDSCH, and may also correspondingly configure a transmission interval of the SPS PDSCH.
Furthermore, the high layer signaling configures N candidate HARQ-ACK timing values (i.e. slot offset value K between SPS PDSCH transmission and corresponding HARQ-ACK feedback position) for the terminal in advance, where the value range of N is 1 to 8. HARQ-ACK timing of PDSCH with PDCCH by the PDCCH
Figure BDA0002266391050000101
The bit HARQ-ACK timing indication field indicates any one of N values pre-configured by the higher layer signaling.
For SPS PDSCH transmission, because a corresponding PDCCH does not exist, HARQ-ACK timing corresponding to the SPS PDSCH transmission is determined by a HARQ-ACK timing indication domain in the PDCCH for activating the SPS PDSCH transmission, and the same HARQ-ACK timing value is used in the SPS PDSCH transmission process. For PDSCH transmission with PDCCH, the PUCCH Resource used by HARQ-ACK feedback is determined according to the PUCCH Resource Indication (PRI) information field in the PDCCH. The high-level signaling configures 8-16 candidate PUCCH resources for the terminal in advance, and indicates the terminal to use one of the candidate PUCCH resources through 3-bit PRI in the PDCCH (when the number of the configured PUCCH resources is more than 8, the CCE index of the PDCCH needs to be combined for determination).
For SPS PDSCH transmission, if the corresponding HARQ-ACK and the HARQ-ACK corresponding to the PDSCH transmission with the PDCCH are fed back in the same time slot, the transmission is carried out on PUCCH resources corresponding to the PDSCH with the PDCCH in a multiplexing mode. If only SPS PDSCH transmits corresponding HARQ-ACK feedback in one time slot, the used PUCCH resource cannot be determined by the PRI in the PDCCH because the corresponding PDCCH does not exist. The NR Rel-15 protocol specifies that the dedicated PUCCH resource is configured for the SPS PDSCH through high-layer signaling, and PUCCH format 0 or PUCCH format 1 can be used, so that the dedicated PUCCH resource for the SPS PDSCH supports 2-bit HARQ-ACK feedback at most. In Rel-16, when the HARQ-ACK multiplexing transmission of the SPS PDSCH is performed in a multi-configuration mode, the network side may configure a plurality of dedicated PUCCH resources for the SPS PDSCH through high-layer signaling, may use PUCCH format 0, PUCCH format 1, PUCCH format 2, PUCCH format 3, or PUCCH format 4, and may support feedback with bits of 1 to 1706.
When only one SPS PDSCH transmission is configured, if the terminal receives only one SPS PDSCH transmission, feedback is performed on the dedicated PUCCH resource corresponding thereto. However, since a shorter SPS PDSCH transmission period is defined in NR Rel-16, the base station cannot guarantee that the PUCCH resource used by the HARQ-ACK feedback information of the SPS PDSCH does not collide with the downlink symbol of TDD, and the terminal cannot transmit the HARQ-ACK feedback of the SPS PDSCH in the downlink symbol of TDD, which may result in excessive dropping of the HARQ feedback of the short-period SPS PDSCH transmission.
Specifically, please refer to fig. 1, wherein it is assumed that the transmission period of SPS PDSCH is 1 slot and the set of slot offset K values (i.e., K set in fig. 1) is {1, 2 }. If the value K indicated in the activation DCI is 2, HARQ-ACK feedback information of the SPS PDSCH in the time slot n needs to be transmitted in the time slot n +2, however, the time slot n +2 is a downlink time slot, and the UE needs to discard the HARQ-ACK feedback information in the time slot n + 2. Wherein Semi DL symbols are Semi-static configuration downlink symbols; semi FL symbols are Semi-static configuration flexible transmission symbols, and the corresponding positions of the symbols can be used for uplink transmission and downlink transmission; semi-statically configuring downlink symbols for Semi UL symbols.
Further, another problem may occur if the HARQ-ACK feedback corresponding to SPS PDSCH transmission is delayed to a time slot that does not collide with the semi-statically configured downlink symbols for feedback only: that is, when HARQ-ACK feedback information of the dynamic PDSCH still exists in the delayed time slot, if a feedback codebook is determined based on the existing multiplexing feedback scheme, the codebook may only include the time slot corresponding to the time slot offset K and may not include the time slots other than the time slot corresponding to the time slot offset K, however, the interval of the time slots in which SPS PDSCH transmission and corresponding delayed HARQ-ACK feedback are located may exceed the maximum value in the configured time slot offset values, and therefore, the feedback codebook determined according to the prior art may not include the feedback information of SPS PDSCH transmission, and if the feedback codebook is not changed, HARQ-ACK feedback information corresponding to SPS PDSCH transmission may not be uploaded.
In view of this, an embodiment of the present invention provides a HARQ feedback scheme for SPS PDSCH. In the scheme, the terminal may receive a time slot offset K value set between PDSCH transmission configured by the network side device through a high-level signaling and a corresponding HARQ-ACK feedback position, where the K value set includes at least one K value, and further, after delaying HARQ-ACK feedback information corresponding to SPS PDSCH transmission to a time slot indicated by a first K value for feedback according to the received DCI, if there is no valid PUCCH resource in the time slot indicated by the first K value, the terminal may continue to delay the HARQ-ACK feedback information to a time slot that can be indicated by other K values in the K set for feedback. Therefore, the HARQ-ACK feedback information corresponding to SPS PDSCH transmission can be better uploaded to the network side equipment, so that the problem that the transmission performance of the SPS PDSCH is reduced due to the fact that the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission is discarded is reduced or avoided, or the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be avoided being discarded, and the transmission performance of the SPS PDSCH transmission is improved.
And when the delayed time slot has the HARQ-ACK feedback information of the dynamic PDSCH, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be fed back on the basis of not changing the feedback codebook, so that the problem of the SPS PDSCH transmission performance reduction caused by discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be further reduced or avoided.
To further explain the call control scheme provided in the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description. Although the embodiments of the present application provide the method operation steps as shown in the following embodiments or figures, more or less operation steps may be included in the method based on the conventional or non-inventive labor. In steps where no necessary causal relationship exists logically, the order of execution of the steps is not limited to that provided by the embodiments of the present application.
Referring to fig. 2, fig. 2 is a flowchart of HARQ feedback of SPS PDSCH according to an embodiment of the present application, which is described in detail as follows:
step 201: and the network side equipment transmits the time slot offset K value set between the PDSCH configured by the high-level signaling and the corresponding HARQ-ACK feedback position and sends the configured K value set to the terminal, so that the terminal can receive the K value set.
In the embodiment of the application, because a frequency point is shared for TDD scene transceiving, and different time slots are needed for uplink and downlink to communicate, a certain time slot difference exists between PDSCH transmission and HARQ-ACK feedback corresponding to the PDSCH transmission. Therefore, the network side device can configure at least one time slot offset K value for HARQ-ACK feedback information corresponding to PDSCH transmission according to the time slot of PDSCH transmission, and further can send the K value set formed by configuring at least one K value to the terminal.
Further, since the set of slot offset K values corresponding to SPS PDSCH transmission and PDSCH transmission by the network side device is the same in the existing communication protocol, the K value in the set of slot offset K values configured for PDSCH transmission may also be used when performing HARQ-ACK message feedback corresponding to SPS PDSCH transmission.
Step 202: the network side sends downlink control information DCI for activating SPS PDSCH transmission to the terminal, and the terminal may receive the downlink control information DCI, where the DCI indicates a first K value in a set of K values.
In this embodiment of the present application, a network side device may send, to a terminal, a DCI for activating SPS PDSCH transmission through a Physical Downlink Control Channel (PDCCH), and may indicate, in the DCI, a first K value for feeding back HARQ-ACK feedback corresponding to the SPS PDSCH transmission, where the first K value is any one of the K value sets. For example, the minimum K value in the set of K values may be used, so that HARQ-ACK feedback corresponding to SPS PDSCH transmission may be performed faster, and the delay of HARQ-ACK feedback may be reduced.
Further, after receiving the DCI, the terminal may activate SPS PDSCH transmission using the DCI, and may determine a time slot for feeding back HARQ-ACK feedback information corresponding to the SPS PDSCH transmission according to the first K value indicated in the received DCI, and further, the terminal may set and send the HARQ-ACK feedback information to the network side in the time slot.
Step 203: the terminal determines whether a physical uplink control link (PUCCH) resource corresponding to the SPS PDSCH transmission in a time slot indicated by the first K value is an invalid PUCCH resource, if not, step 204 is executed, and if so, step 205 is executed.
In this embodiment of the present application, a network side device may generally configure 1 to 4 PUCCH resource sets for a terminal, and when indicating that the terminal uploads HARQ-ACK feedback information through DCI, the network side device may determine a PUCCH resource set to be selected based on a data amount (e.g., a bit number) of uplink control information such as to-be-transmitted HARQ-ACK feedback information, and indicate one PUCCH resource of the PUCCH resource set through a PUCCH resource indication (PUCCH resource indicator) field in the DCI. That is to say, after receiving the DCI sent by the network side device, the terminal may determine, according to the first K value indicated in the DCI, a time slot corresponding to the first K value and a PUCCH resource used for transmitting HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot.
Furthermore, the terminal can determine whether the PUCCH resource corresponding to SPS PDSCH transmission in the time slot is an invalid PUCCH resource according to the OFMD symbol occupied by the determined PUCCH resource, so that the terminal can determine in time whether the time slot indicated by the first K value can be used for feeding back HARQ-ACK feedback information corresponding to SPS PDSCH transmission.
Specifically, in the embodiment of the present application, it may be determined that the PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource according to, but not limited to, the following several ways.
First, at least one symbol in a PUCCH resource corresponding to SPS PDSCH transmission is determined to be a semi-statically configured downlink symbol. For example, the PUCCH resource corresponding to SPS PDSCH transmission includes 8 symbols, and if the base station indicates, through RRC signaling configuration, that one or more symbols are downlink symbols, the PUCCH resource corresponding to SPS PDSCH transmission is considered to be an invalid PUCCH resource.
Second, at least one symbol in the PUCCH resource corresponding to SPS PDSCH transmission is a symbol required for the guard interval period GP.
Thirdly, at least one symbol in the PUCCH resources corresponding to SPS PDSCH transmission is a downlink symbol of the dynamic indication.
Fourthly, at least one symbol in the PUCCH resource corresponding to the SPS PDSCH transmission is a flexible symbol of dynamic indication.
The flexible symbol of the dynamic indication may be a flexible symbol indicated by a Slot Format Indication (SFI), or a symbol occupied by downlink transmission scheduled by DCI.
Step 204: and the terminal feeds back SPS PDSCH transmission corresponding HARQ-ACK feedback information to the network side equipment through PUCCH resources.
In the embodiment of the application, when the PUCCH resource corresponding to SPS PDSCH transmission in the slot indicated by the first K value is an effective PUCCH resource, the terminal may upload HARQ-ACK feedback information corresponding to SPS PDSCH transmission to the network side device through the PUCCH resource, thereby completing feedback of the HARQ-ACK feedback information corresponding to SPS PDSCH transmission.
Step 205: and delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to a time slot indicated by a second K value in the K value set for feedback.
In the embodiment of the application, when it is determined that no effective PUCCH resource exists in the time slot indicated by the first K value, HARQ-ACK feedback information corresponding to SPS PDSCH transmission may be delayed to the time slot indicated by the second K value in the K value set for feedback, so that the HARQ-ACK feedback information corresponding to SPS PDSCH transmission may be better uploaded to a network side device, thereby reducing or avoiding a problem of reduced SPS PDSCH transmission performance due to discarding of the HARQ-ACK feedback information corresponding to SPS PDSCH transmission, and thus improving the transmission performance of SPS PDSCH transmission.
Wherein the second K value may be other K values in the set of K values except the first K value, for example, the terminal may sort the K values in the set of K values from small to large, and if the first K value may be the smallest K value in the set of K values, the second K value may be the next K value ranked next to the first K value (i.e., the K value ranked 2), and the HARQ-ACK feedback information corresponding to the SPS PDSCH can be delayed to the slot indicated by the next K value of the first K value for feedback, so that compared with the related art, the effective PUCCH resources are not contained in the time slot indicated by the first K value, and the probability of discarding the HARQ-ACK feedback information can be reduced for directly discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH, or the HARQ-ACK feedback information is prevented from being discarded, so that the problem caused by discarding the HARQ-ACK feedback information is reduced. And because the second K value is the next K value of the first K value, the time slot difference between the first K value and the second K value is small, if the uploading of the HARQ-ACK feedback information corresponding to the SPS PDSCH is finished in the second K value, the time delay of the HARQ-ACK feedback can be reduced, and the transmission performance of the SPS PDSCH transmission is improved.
In the embodiment of the present application, after delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH to the time slot indicated by the next K value of the first K value for feedback, whether the HARQ-ACK feedback information corresponding to the SPS PDSCH can be uploaded in the time slot indicated by the next K value is able to be completed, and it is also necessary to determine according to whether the PUCCH resource corresponding to the SPS PDSCH in the time slot indicated by the next K value is an effective PUCCH resource. If the slot indicated by the next K value contains valid PUCCH resources, HARQ-ACK feedback information corresponding to SPS PDSCH transmission may be transmitted in the slot indicated by the next K value. If the time slot corresponding to the next K value does not contain the effective PUCCH resource, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be discarded; or, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission may also be sequentially delayed according to the order of the K values in the K value sets, until the delay is reached when no valid PUCCH resource is included in the time slot indicated by the last K value in the K value sets, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission is discarded. Therefore, the HARQ-ACK feedback information corresponding to SPS PDSCH transmission can be better uploaded to the network side equipment, so that the problem of SPS PDSCH transmission performance reduction caused by discarding of the HARQ-ACK feedback information corresponding to SPS PDSCH transmission is reduced or avoided, and the transmission performance of SPS PDSCH transmission is improved.
In the following, taking the K values in the K value set to be sorted in order from small to large, and the second K being the next K value of the first K value as an example, a specific description is given to an implementation manner of delaying HARQ-ACK feedback information corresponding to SPS PDSCH transmission to a time slot indicated by the next K value for feedback in the embodiment of the present application.
Embodiment mode 1
Referring to fig. 3, in this embodiment, it is assumed that the period of SPS PDSCH transmission configured by the network side device for the terminal is 1 timeslot, and the configured K value set is {2, 4 }.
The value K indicated in the DCI for activating SPS PDSCH transmission in the time slot n, which is issued to the terminal by the network side device, is 2, HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot n may be fed back in the time slot n +2, and since the time slot n +2 is a downlink time slot, PUCCH resources corresponding to SPS PDSCH transmission are invalid PUCCH resources.
Further, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n may be delayed to the time slot indicated by the next K value for feedback. The next K value can be determined to be 4 from the configured K value set, and the indicated time slot is time slot n +4, that is, HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot n can be delayed to the time slot n +4 for feedback, if the time slot n +4 includes an effective PUCCK resource, HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot n can be uploaded to the network side device through the effective PUCCH resource, otherwise HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot n may be discarded.
Therefore, when the terminal cannot set the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the feedback time slot n to the network side in the time slot n +2, the feedback can be delayed to n +4 (namely the time slot indicated by the next K value), so that the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be better uploaded to the network side equipment, the problem of SPS PDSCH transmission performance reduction caused by discarding of the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission is reduced or avoided, and the transmission performance of the SPS PDSCH transmission is improved.
Further, in the embodiment of the present application, since the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the slot n +2 may be fed back in n +4, the PUCCH resource corresponding to the SPS PDSCH transmission in the slot n +4 may simultaneously carry the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the slot n and the slot n + 2. When one timeslot simultaneously carries HARQ-ACK feedback information transmitted by SPS PDSCH in other two timeslots, please refer to the description related to embodiment 2 below for how the one timeslot performs HARQ-ACK feedback, which is not described herein again.
Correspondingly, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n +1 and the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n +2 may also be uploaded or discarded in the foregoing manner, which is not described herein one by one.
Embodiment mode 2
Referring to fig. 4, in this embodiment, it is assumed that the period of SPS PDSCH transmission configured by the network side device for the terminal is 1 timeslot, and the configured K value set is {2, 3, 4 }.
The value K indicated in the DCI for activating SPS PDSCH transmission in the time slot n, which is issued to the terminal by the network side device, is 2, HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot n may be fed back in the time slot n +2, and since the time slot n +2 is a downlink time slot, PUCCH resources corresponding to SPS PDSCH transmission are invalid PUCCH resources. And further, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n can be delayed to the time slot indicated by the next K value for feedback, namely the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n is fed back in the time slot n + 3.
Further, since the HARQ-ACK feedback information in the slot n +1 may also be fed back in n +3, the PUCCH resource corresponding to the SPS PDSCH transmission in the slot n +3 may simultaneously carry the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the slot n and the slot n + 1. When the same time slot simultaneously carries the HARQ-ACK feedback information corresponding to SPS PDSCH transmission in multiple time slots, the number of bits of the HARQ-ACK feedback information carried in the time slot increases, and further, the PUCCH resource corresponding to the time slot may change with the change of the number of bits carried, so that the following three situations may exist:
in case one, when the PUCCH resource corresponding to the HARQ-ACK feedback information transmitted by the SPS PDSCH in the slot n +1 and the slot n +3 simultaneously carried by the slot n +3 is an effective PUCCH resource, the HARQ-ACK feedback information transmitted by the SPS PDSCH in the slot n +1 and the slot n +3 may be simultaneously fed back, thereby avoiding discarding the HARQ-ACK feedback information transmitted by the SPS PDSCH. That is to say, according to the bit number of the HARQ-ACK feedback information simultaneously carried by the n +3 slots, the determined PUCCH resource is an effective PUCCH resource.
In case two, please refer to fig. 5, PUCCH resources corresponding to HARQ-ACK feedback information of SPS PDSCH in slot n +1 and slot n +3 simultaneously carried in slot n +3 are invalid PUCCH resources, and only PUCCH resources corresponding to HARQ-ACK feedback information of SPS PDSCH in transmission slot n are valid PUCCH resources or only PUCCH resources corresponding to HARQ-ACK feedback information of SPS PDSCH in transmission slot n +1 are valid PUCCH resources. Namely, according to the bit number of the HARQ-ACK feedback information simultaneously carried by the n +3 time slots, the determined PUCCH resource is an invalid PUCCH resource, but the PUCCH resource corresponding to the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n is an effective PUCCH resource, or the PUCCH resource corresponding to the HARQ-ACK feedback information of the SPS PDSCH in the time slot n +1 is an effective PUCCH resource, and under the condition, the transmission modes comprise three transmission modes:
first, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in slot n +1 may be discarded, while only the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in slot n is transmitted in slot n + 3.
Second, HARQ-ACK feedback information corresponding to SPS PDSCH transmission in slot n may be discarded directly, while only HARQ-ACK feedback information corresponding to SPS PDSCH transmission in slot n +1 may be transmitted in slot n + 3.
In the two manners, although the second manner is compared with the first manner, although one HARQ-ACK feedback information corresponding to the SPS PDSCH transmission needs to be discarded, the time slot difference between the time slot n +1 and the time slot n +3 is smaller, so that the HARQ-ACK feedback delay of the SPS PDSCH transmission can be reduced to a certain extent.
Thirdly, the HARQ-ACK feedback information corresponding to the SPS PDSCH in the time slot n may be continuously delayed, that is, the HARQ-ACK feedback information corresponding to the SPS PDSCH in the time slot n may be continuously delayed to the backward direction on the basis of the time slot n +3 after the HARQ-ACK feedback information corresponding to the SPS PDSCH in the time slot n is delayed to n + 3. For example, the HARQ-ACK feedback information corresponding to the SPS PDSCH in n may be delayed to be fed back in slot n + 4.
Further, after delaying the HARQ-ACK feedback information to the time slot n +4 for feedback, if the time slot n +4 still has no effective PUCCH resource, the backward delay can be continued according to the sequence of K values from small to large in the configured K value set until the time slot which is indicated by the last K value in the K value set is delayed, if the time slot still includes the effective PUCCH resource, the HARQ-ACK feedback information corresponding to the SPS PDSCH in the n can be discarded, therefore, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be better uploaded to the network side equipment, the probability that the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission is discarded is reduced, therefore, the problem of SPS PDSCH transmission performance reduction caused by discarding HARQ-ACK feedback information corresponding to SPS PDSCH transmission is reduced or avoided, and the transmission performance is improved.
In case three, when the PUCCH resource corresponding to the HARQ-ACK feedback information transmitted by the SPS PDSCH in the time slot n +1 and the time slot n +3 simultaneously carries is an invalid PUCCH resource, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n +1 and the time slot n +4 may be delayed for feedback, that is, the HARQ-ACK feedback information corresponding to the SPS PDSCH in the time slot n +4, the time slot n +1, and the time slot n +2 may be transmitted in the time slot n + 4. Therefore, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be better uploaded to the network side equipment, so that the problem of SPS PDSCH transmission performance reduction caused by discarding of the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission is reduced or avoided, and the transmission performance of the SPS PDSCH transmission is improved.
Further, in the time slot n +4, specifically, whether HARQ-ACK feedback information corresponding to the SPS PDSCH in the time slot n, the time slot n +1, and the time slot n +2 is fed back to the network side device or discarded may be determined according to the foregoing manner, which is not described herein again.
Embodiment 3
Referring to fig. 6, in this embodiment, it is assumed that the period of SPS PDSCH transmission configured by the network side device for the terminal is 1 timeslot, and the configured K set is {2, 3 }.
If the value K indicated in the DCI activating the SPS PDSCH transmission is 3, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot n +2 may be fed back in the time slot n + 5. However, the slot n +5 is a downlink slot, so that the PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource, and the HARQ-ACK feedback information corresponding to SPS PDSCH transmission in n +2 may be delayed to the slot indicated by the next K value for feedback. However, as can be seen from the configured set of K values, 3 is the last K value in the set, and there is no timing sequence that can continue to be delayed backward, so the HARQ-ACK feedback information corresponding to the SPS PDSCH in the time slot n +2 can be directly discarded. Therefore, the feedback of the HARQ-ACK feedback information corresponding to the SPS PDSCH in other time slots is prevented from being influenced, and the resource occupied by the delayed HARQ-ACK feedback information is saved.
As an optional implementation manner, in this embodiment of the application, when HARQ-ACK feedback information corresponding to dynamic PDSCH transmission also exists in the delayed time slot, that is, PUCCH resources corresponding to SPS PDSCH transmission in the delayed time slot may simultaneously carry HARQ-ACK feedback information corresponding to SPS PDSCH transmission and HARQ-ACK feedback information corresponding to dynamic PDSCH transmission.
And when the PUCCH resource is determined to be the effective PUCCH resource, the HARQ-ACK feedback information corresponding to SPS PDSCH transmission and the HARQ-ACK feedback information corresponding to dynamic PDSCH transmission can be simultaneously uploaded through the PUCCH resource. When the PUCCH resource is determined to be invalid PUCCH resource, HARQ-ACK feedback information corresponding to SPS PDSCH transmission and HARQ-ACK feedback information corresponding to dynamic PDSCH transmission are discarded at the same time; or only one of them may be discarded; or the HARQ-ACK feedback information corresponding to the dynamic PDSCH transmission may also be uploaded through the PUCCH resource, and the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission is continuously delayed backwards to other time slots, where the specific delay manner is the same as that described in the foregoing embodiments 1 to 3, and is not described here again.
Therefore, by the above method, when the PUCCH resource corresponding to SPS PDSCH transmission in the slot indicated by the first K value is determined to be an invalid PUCCH resource, HARQ-ACK feedback information corresponding to SPS PDSCH transmission may be delayed to the slot indicated by the second K value in the set of K values configured for the terminal by the network side device for feedback. Therefore, the HARQ-ACK feedback information corresponding to SPS PDSCH transmission can be better uploaded to the network side equipment, so that the problem of SPS PDSCH transmission performance reduction caused by discarding of the HARQ-ACK feedback information corresponding to SPS PDSCH transmission is reduced or avoided, and the transmission performance of SPS PDSCH transmission is improved.
Moreover, by the method, when the HARQ-ACK feedback information of the dynamic PDSCH still exists in the delayed time slot, the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be fed back on the basis of not changing the feedback codebook, so that the problem of the SPS PDSCH transmission performance reduction caused by discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission can be further reduced or avoided.
Based on the same inventive concept, on the terminal side, as shown in fig. 7, the terminal according to the embodiment of the present application can implement the process performed in fig. 2 in the foregoing embodiment. As shown in fig. 7, the terminal includes a first receiving unit 701, a second receiving unit 702, and a delay unit 703. Wherein:
a first receiving unit 701, configured to receive a set of slot offset K values between PDSCH transmission configured by a network side device through a high-level signaling and a corresponding HARQ-ACK feedback position, where the set of slot offset K values includes at least one K value;
a second receiving unit 702, configured to receive downlink control information DCI for activating SPS PDSCH transmission, where the DCI indicates a first K value in the set of K values;
a delaying unit 703, configured to delay, when it is determined that a physical uplink control link PUCCH resource corresponding to SPS PDSCH transmission in a slot indicated by a first K value is an invalid PUCCH resource, HARQ-ACK feedback information corresponding to SPS PDSCH transmission to a slot indicated by a second K value in a set of K values for feedback.
In one possible implementation, a physical uplink control link PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource, including:
at least one symbol in PUCCH resources corresponding to SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to SPS PDSCH transmission is a dynamically indicated flexible symbol.
In a possible implementation manner, when the K values in the K value set are arranged in order from small to large, and the second K value is a K value next to the first K value, the delay unit 703 is specifically configured to:
and delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to the time slot indicated by the next K value for feedback.
In one possible implementation, the delay unit 703 shown in fig. 7 is further configured to:
and when the time slot indicated by the next K value contains effective PUCCH resources, transmitting HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the next K value.
In a possible implementation manner, when a slot corresponding to a next K value does not include a valid PUCCH resource, the delay unit 703 shown in fig. 7 is further configured to:
discarding HARQ-ACK feedback information corresponding to SPS PDSCH transmission; alternatively, the first and second electrodes may be,
and sequentially delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission according to the arrangement sequence of the K values in the K value set until the time slot indicated by the last K value in the K value set does not contain the effective PUCCH resource, and discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission.
Based on the same inventive concept, on the terminal side, as shown in fig. 8, the network side device according to the embodiment of the present application can implement the process executed in fig. 2 in the foregoing embodiment. As shown in fig. 8, the network side device includes a configuration unit 801, a sending unit 802, and a receiving unit 803, where:
a configuration unit 801, configured to configure, by high-level signaling, a time slot offset K value set between PDSCH transmission and a corresponding HARQ-ACK feedback position, where the K value set includes at least one K value;
a sending unit, configured to send, to a terminal, downlink control information DCI for activating SPS PDSCH transmission, where the DCI indicates a first K value in the set of K values;
and the receiving unit is used for receiving HARQ-ACK feedback information corresponding to SPS PDSCH transmission in a time slot indicated by a second K value in the K value set when the physical uplink control link PUCCH resource corresponding to the SPS PDSCH transmission in the time slot indicated by the first K value is determined to be an invalid PUCCH resource.
In one possible implementation, a physical uplink control link PUCCH resource corresponding to SPS PDSCH transmission is an invalid PUCCH resource, including:
at least one symbol in PUCCH resources corresponding to SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to SPS PDSCH transmission is a dynamically indicated flexible symbol.
In a possible implementation manner, when the K values in the set of K values are arranged in order from small to large, and the second K value is a next K value of the first K value, the receiving unit 803 shown in fig. 8 is specifically configured to:
and receiving HARQ-ACK feedback information corresponding to SPS PDSCH transmission in a time slot indicated by the next K value.
In one possible implementation manner, the receiving unit 803 shown in fig. 8 is further configured to:
and when the time slot indicated by the next K value contains effective PUCCH resources, receiving the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission fed back in the time slot indicated by the next K value through the PUCCH resources.
With regard to the terminal and the network side device in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be elaborated here.
The division of the modules in the embodiments of the present disclosure is illustrative, and is only a logical function division, and there may be another division manner in actual implementation, and in addition, each functional module in each embodiment of the present disclosure may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
An embodiment of the present application further provides a computer-readable non-volatile storage medium, which includes a computer program for implementing the HARQ feedback method for SPS PDSCH, and when the program is executed by a processing unit, the program implements the steps in the HARQ feedback method for SPS PDSCH described above.
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. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
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 application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (19)

1. A HARQ feedback method for hybrid automatic repeat request of a PDSCH (semi-persistent scheduling physical downlink shared channel) is characterized by comprising the following steps:
receiving a time slot offset K value set between PDSCH transmission configured by network side equipment through high-level signaling and a corresponding hybrid automatic repeat request-acknowledgement HARQ-ACK feedback position, wherein the K value set comprises at least one K value;
receiving Downlink Control Information (DCI) for activating the SPS PDSCH transmission, wherein a first K value in the set of K values is indicated in the DCI;
and when determining that the physical uplink control link PUCCH resources corresponding to the SPS PDSCH transmission in the time slot indicated by the first K value are invalid PUCCH resources, delaying HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to the time slot indicated by a second K value in the K value set for feedback.
2. The method of claim 1, wherein the physical uplink control link (PUCCH) resources corresponding to the SPS PDSCH transmission are invalid PUCCH resources, comprising:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
3. The method of claim 1, wherein the K values in the set of K values are arranged in order from smaller to larger, and the second K value is the next K value of the first K value;
delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to the time slot indicated by the second K value in the K value set for feedback, specifically:
and delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission until the time slot indicated by the next K value is fed back.
4. The method of claim 3, wherein delaying HARQ-ACK feedback information corresponding to the SPS PDSCH transmission for feedback to the time slot indicated by the next K value comprises:
and if the time slot indicated by the next K value contains effective PUCCH resources, transmitting HARQ-ACK feedback information corresponding to SPS PDSCH transmission in the time slot indicated by the next K value.
5. The method of claim 4, wherein if the slot corresponding to the next K value does not contain a valid PUCCH resource, the method further comprising:
discarding HARQ-ACK feedback information corresponding to the SPS PDSCH transmission; alternatively, the first and second electrodes may be,
and sequentially delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission according to the sequence of the K values in the K value set until the time slot indicated by the last K value in the K value set does not include the effective PUCCH resource, and discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission.
6. A HARQ feedback method for hybrid automatic repeat request of a PDSCH (semi-persistent scheduling physical downlink shared channel) is characterized by comprising the following steps:
configuring a time slot offset K value set between PDSCH transmission and a corresponding hybrid automatic repeat request-acknowledgement HARQ-ACK feedback position for a terminal through high-level signaling, wherein the K value set comprises at least one K value;
sending Downlink Control Information (DCI) for activating SPS (physical downlink shared channel) PDSCH transmission to the terminal, wherein the DCI indicates a first K value in the K value set;
and when determining that the physical uplink control link PUCCH resources corresponding to the SPS PDSCH transmission in the time slot indicated by the first K value are invalid PUCCH resources, receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by a second K value in the K value set.
7. The method of claim 6, wherein the physical uplink control link (PUCCH) resources corresponding to the SPS PDSCH transmission are invalid PUCCH resources, comprising:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
8. The method of claim 6, wherein the K values in the set of K values are arranged in descending order, the second K value being the next K value from the first K value;
then, said receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the second K value in the set of K values specifically includes:
and receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the next K value.
9. The method of claim 8, wherein the receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the slot indicated by the next K value comprises:
and if the time slot indicated by the next K value contains effective PUCCH resources, receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission fed back in the time slot indicated by the next K value through the PUCCH resources.
10. A terminal, comprising:
a first receiving unit, configured to receive a set of slot offset K values between PDSCH transmission configured by a network side device through a high-level signaling and a corresponding HARQ-ACK feedback position, where the set of K values includes at least one K value;
a second receiving unit, configured to receive downlink control information DCI for activating the SPS PDSCH transmission, where the DCI indicates a first K value in the set of K values;
and a delaying unit, configured to delay, when it is determined that a physical uplink control link PUCCH resource corresponding to the SPS PDSCH transmission in a slot indicated by the first K value is an invalid PUCCH resource, HARQ-ACK feedback information corresponding to the SPS PDSCH transmission to a slot indicated by a second K value in the set of K values for feedback.
11. The terminal of claim 10, wherein the physical uplink control link PUCCH resource for SPS PDSCH transmission is an invalid PUCCH resource, comprising:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
12. The terminal according to claim 10, wherein when the K values in the set of K values are arranged in descending order and the second K value is a next K value of the first K value, the delay unit is specifically configured to:
and delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission until the time slot indicated by the next K value is fed back.
13. The terminal of claim 12, wherein the delay unit is further configured to:
and when the time slot indicated by the next K value contains effective PUCCH resources, transmitting HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the next K value.
14. The terminal of claim 13, wherein when the slot corresponding to the next K value does not contain a valid PUCCH resource, the delay unit is further configured to:
discarding HARQ-ACK feedback information corresponding to the SPS PDSCH transmission; alternatively, the first and second electrodes may be,
and sequentially delaying the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission according to the sequence of the K values in the K value set until the time slot indicated by the last K value in the K value set does not include the effective PUCCH resource, and discarding the HARQ-ACK feedback information corresponding to the SPS PDSCH transmission.
15. A network-side device, comprising:
a configuration unit, configured to configure, for a terminal through a high-level signaling, a set of slot offset K values between a PDSCH transmission and a corresponding HARQ-ACK feedback position, where the set of K values includes at least one K value;
a sending unit, configured to send, to the terminal, downlink control information DCI for activating SPS PDSCH transmission, where the DCI indicates a first K value in the set of K values;
a receiving unit, configured to receive HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in a slot indicated by a second K value in the set of K values when it is determined that a physical uplink control link PUCCH resource corresponding to the SPS PDSCH transmission in the slot indicated by the first K value is an invalid PUCCH resource.
16. The apparatus of claim 15, wherein the physical uplink control link PUCCH resource for SPS PDSCH transmission is an invalid PUCCH resource, comprising:
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a semi-statically configured downlink symbol; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a symbol required to be used for a guard interval period GP; alternatively, the first and second electrodes may be,
at least one symbol in PUCCH resources corresponding to the SPS PDSCH transmission is a downlink symbol of dynamic indication; alternatively, the first and second electrodes may be,
at least one symbol in the PUCCH resources corresponding to the SPS PDSCH transmission is a flexible symbol which is dynamically indicated.
17. The apparatus according to claim 15, wherein when the K values in the set of K values are arranged in descending order and the second K value is the next K value of the first K value, the receiving unit is specifically configured to:
and receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission in the time slot indicated by the next K value.
18. The device of claim 17, wherein the receiving unit is further to:
and when the time slot indicated by the next K value contains effective PUCCH resources, receiving HARQ-ACK feedback information corresponding to the SPS PDSCH transmission fed back in the time slot indicated by the next K value through the PUCCH resources.
19. A computer storage medium having stored thereon a computer program for implementing a HARQ feedback method for an SPS PDSCH, the program being characterized in that it implements the steps of a method according to any of claims 1-5 or the steps of a method according to any of claims 6-9 when executed by a processor.
CN201911089349.6A 2019-11-08 2019-11-08 HARQ feedback method, device and storage medium for SPS PDSCH Pending CN112787772A (en)

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