CN113115591B - HARQ-ACK transmission method and device, communication equipment and storage medium - Google Patents
HARQ-ACK transmission method and device, communication equipment and storage medium Download PDFInfo
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- CN113115591B CN113115591B CN201980002961.7A CN201980002961A CN113115591B CN 113115591 B CN113115591 B CN 113115591B CN 201980002961 A CN201980002961 A CN 201980002961A CN 113115591 B CN113115591 B CN 113115591B
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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
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- H—ELECTRICITY
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Abstract
The embodiment of the application discloses a HARQ-ACK transmission method and device, communication equipment and a storage medium. The HARQ-ACK transmission method applied to the UE may include: under the condition that a disposable HARQ-ACK feedback mechanism is used and PDSCH (physical downlink shared channel) transmission of SPS is activated, triggering the disposable HARQ-ACK feedback when an HARQ process number corresponding to downlink data transmitted by PDSCH resources in a current SPS period is the last unused HARQ process number in an HARQ process number set in the use of the HARQ process number in the current round; and reporting HARQ-ACK of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to a base station at one time based on the one-time HARQ-ACK feedback mechanism.
Description
Technical Field
The embodiment of the present application relates to the field of wireless communications technologies, but is not limited to the field of wireless communications technologies, and in particular, to a method and an apparatus for transmitting a Hybrid Automatic Repeat request acknowledgement (HARQ-ACK), a communication device, and a computer storage medium.
Background
In the related art, when a base station dynamically schedules a Physical Downlink Shared Channel (PDSCH) resource, the base station needs to indicate a feedback resource of a corresponding HARQ-ACK for Downlink data transmitted by the PDSCH resource. The Downlink Control Information (DCI) in the PDSCH resource scheduling includes a time domain offset (K1) Information field and a Physical Uplink Control Channel resource indicator (PRI) Information field.
The K1 information field indicates the interval between the slot (slot) where the PUCCH resource for HARQ-ACK is transmitted and the slot where the PDSCH resource is scheduled.
The PRI information field indicates a PUCCH resource ID carrying the HARQ-ACK. And determining a time slot in which a PUCCH resource carrying HARQ-ACK can be located according to the K1 indication in the DCI.
The index of the PUCCH resource set, namely the PUCCH resource set ID, can be determined according to the number of the HARQ-ACK bits needing to be fed back. And since what number of HARQ-ACK bits is common information that both the base station and the UE already know, there is no need to indicate in DCI.
The index of the PUCCH resource used in the PUCCH resource set can be determined according to the PRI information field in the DCI, that is, the PUCCH resource ID carrying the HARQ-ACK is known.
In some cases, a Physical Downlink Control Channel (PDCCH) resource carrying the DCI is combined to determine a PUCCH resource ID carrying HARQ-ACK.
A Semi-Persistent PDSCH Scheduling (Semi-Persistent Scheduling, SPS) is proposed in the related art. In this manner, the base station configures a K1 value of a K1 information field and an SPS period (in milliseconds) of the PDSCH Resource for the SPS period using Radio Resource Control (RRC) layer signaling.
The DCI activating PDSCH transmission of SPS includes a PRI information field and a time-frequency domain position of PDSCH resources. In the case of using semi-persistent scheduling, after transmitting DCI for PDSCH transmission activating SPS, the base station may periodically transmit downlink data for SPS PDSCH resource transmission on the designated PDSCH resource without transmitting DCI for scheduling the PDSCH resource. After receiving the DCI of the PDSCH transmission activating SPS, the UE may periodically receive downlink data on the PDSCH channel from the base station according to the DCI indication without attempting to receive DCI scheduling the PDSCH resource.
Disclosure of Invention
The embodiment of the application provides a HARQ-ACK transmission method and device, communication equipment and a storage medium.
A first aspect of an embodiment of the present application provides a method for HARQ-ACK transmission, where the method is applied to a user equipment UE, and the method includes:
under the condition that a disposable HARQ-ACK feedback mechanism is used and PDSCH (physical downlink shared channel) transmission of SPS is activated, triggering the disposable HARQ-ACK feedback when an HARQ process number corresponding to downlink data transmitted by PDSCH resources in a current SPS period is the last unused HARQ process number in an HARQ process number set in the use of the HARQ process number in the current round;
and reporting HARQ-ACK of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to a base station at one time based on the one-time HARQ-ACK feedback mechanism.
Based on the above scheme, the method further comprises:
and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is not the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number in the current round, not triggering the use of the one-time HARQ-ACK mechanism.
Based on the above scheme, the method further comprises:
receiving downlink control information DCI activating PDSCH transmission of the SPS;
activating the SPS PDSCH transmission according to the DCI; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
determining PUCCH resources for transmitting the HARQ-ACK according to the PRI information domain;
and determining the time slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information domain.
A second aspect of the embodiments of the present application provides a method for HARQ-ACK transmission, where the method is applied in a base station, and includes:
under the condition that a disposable HARQ-ACK feedback mechanism is used and the PDSCH transmission of the SPS is activated, transmitting downlink data on the PDSCH resource of the current SPS period;
and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number in the current round, receiving the HARQ-ACK of the HARQ process corresponding to all the HARQ process numbers in the HARQ process number set reported at one time based on the one-time HARQ-ACK feedback mechanism.
Based on the above scheme, the method further comprises:
sending down downlink control information DCI for activating PDSCH transmission of the SPS; wherein the DCI is used to activate the SPS PDSCH transmission; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
determining PUCCH resources for transmitting the HARQ-ACK according to the PRI information domain;
and determining the time slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information domain.
A third aspect of the present application provides an apparatus for HARQ-ACK transmission, where the apparatus is applied to a user equipment UE, and the apparatus includes:
the first triggering module is configured to trigger the one-time HARQ-ACK feedback when an HARQ process number corresponding to downlink data transmitted by PDSCH resources of a current SPS period is the last unused HARQ process number in an HARQ process number set in the current round of HARQ process number use under the condition that a one-time HARQ-ACK feedback mechanism is configured and the PDSCH transmission of a semi-persistent scheduling SPS physical downlink shared channel is activated;
and the first sending module is used for reporting HARQ-ACK of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to a base station at one time based on the one-time HARQ-ACK feedback mechanism.
Based on the above scheme, the first triggering module is further configured to not trigger the use of the one-time HARQ-ACK mechanism when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is not the last unused HARQ process number in the HARQ process number set in use of the HARQ process number of the current round.
Based on the above scheme, the apparatus further comprises:
a first receiving module configured to receive downlink control information DCI activating PDSCH transmission of the SPS;
an activation module configured to activate the SPS PDSCH transmission according to the DCI; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
a first determining module configured to determine a PUCCH resource for transmission of the HARQ-ACK according to the PRI information field;
a second determining module configured to determine a slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information field.
A fourth aspect of the present invention provides an HARQ-ACK transmitting apparatus, where the HARQ-ACK transmitting apparatus is applied to a base station, and the HARQ-ACK transmitting apparatus includes:
the second sending module is configured to transmit downlink data on PDSCH resources of a current SPS period under the condition that a disposable HARQ-ACK feedback mechanism is used and PDSCH transmission of a physical downlink shared channel of a semi-persistent scheduling SPS is activated;
and the second receiving module is configured to receive the HARQ-ACKs of the HARQ processes corresponding to all HARQ process numbers in the HARQ process number set reported at one time based on the one-time HARQ-ACK feedback mechanism when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is the last unused HARQ process number in the HARQ process number set in use of the HARQ process number of the current round.
Based on the above scheme, the second sending module is further configured to issue downlink control information DCI activating PDSCH transmission of the SPS; wherein the DCI is used to activate the SPS PDSCH transmission; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
a third determining module configured to determine a PUCCH resource for transmission of the HARQ-ACK according to the PRI information field;
a fourth determining module configured to determine a slot offset between the PDSCH resource of the current SPS period and the PUCCH resource transmitting the HARQ-ACK according to the time domain offset information field
A fifth aspect of an embodiment of the present application provides a communication device, including:
a transceiver;
a memory;
and a processor, respectively connected to the transceiver and the memory, configured to control transceiving of a wireless signal of the transceiver by executing the computer-executable instructions stored in the memory, and to implement the HARQ-ACK transmission method according to any of the above-mentioned first aspect or second aspect.
A sixth aspect of embodiments of the present application provides a computer storage medium having computer-executable instructions stored thereon; the computer-executable instructions, when executed by a processor, may implement the HARQ-ACK transmission method according to any of the technical solutions of the first aspect or the second aspect.
According to the technical scheme provided by the embodiment of the application, when PDSCH resources are scheduled semi-persistently, based on whether the HARQ process number used by the HARQ process corresponding to the current SPS period is the last unused HARQ process number in the HARQ process number set in the current round of HARQ process number use, if so, the UE and the base station consider that a one-time (one shot) HARQ-ACK feedback mechanism needs to be triggered, and once the one-time HARQ-ACK feedback mechanism is triggered, the UE reports HARQ-ACK of all HARQ processes to the base station at one time. Therefore, on one hand, the triggering of the one-time HARQ-ACK feedback mechanism is simply and conveniently realized; on the other hand, the base station does not need to specially send down the trigger signaling for triggering the one-time HARQ-ACK feedback mechanism, thereby reducing the signaling overhead.
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
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating a HARQ-ACK transmission method according to an embodiment of the present disclosure;
fig. 3 is a flowchart illustrating a HARQ-ACK transmission method according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a HARQ-ACK transmission method according to an embodiment of the present disclosure;
fig. 5 is a flowchart illustrating a HARQ-ACK transmission method according to an embodiment of the present disclosure;
fig. 6 is a flowchart illustrating a HARQ-ACK transmission method according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an HARQ-ACK transmission apparatus according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of an HARQ-ACK transmission apparatus according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a UE according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the examples of the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the embodiments of the application, as detailed in the appended claims.
The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information in the embodiments of the present disclosure, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: a number of UEs 11 and a number of base stations 12.
Among other things, the UE11 may be a device that provides voice and/or data connectivity to a user. The UE11 may communicate with one or more core networks via a Radio Access Network (RAN), and the UE11 may be internet of things UEs, such as sensor devices, mobile phones (or "cellular" phones), and computers with internet of things UEs, such as stationary, portable, pocket, hand-held, computer-included, or vehicle-mounted devices. For example, a Station (STA), a subscriber unit (subscriber unit), a subscriber Station (subscriber Station), a mobile Station (mobile), a remote Station (remote Station), an access point (ap), a remote UE (remote terminal), an access UE (access terminal), a user equipment (user terminal), a user agent (user agent), a user equipment (user device), or a user UE (user equipment, UE). Alternatively, the UE11 may be a device of an unmanned aerial vehicle. Alternatively, the UE11 may be a vehicle-mounted device, for example, a vehicle computer with a wireless communication function, or a wireless communication device externally connected to the vehicle computer. Alternatively, the UE11 may be a roadside device, such as a street lamp, a signal lamp, or other roadside device with wireless communication capability.
The base station 12 may be a network side device in a wireless communication system. The wireless communication system may be a 5G system, also called New Radio (NR) system or 5G NR system. Alternatively, the wireless communication system may be a system supporting New air-interface unlicensed-spectrum communication (NR-U). Alternatively, the wireless communication system may be a next generation system of a 5G system. Among them, the Access Network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
The base station 12 may be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 12 adopts a centralized distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DU). A Packet Data Convergence Protocol (PDCP) layer, a Radio Link layer Control Protocol (RLC) layer, and a Media Access Control (MAC) layer are provided in the central unit; a Physical (PHY) layer protocol stack is disposed in the distribution unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12.
The base station 12 and the UE11 may establish a wireless connection over a wireless air interface. In different embodiments, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.
In some embodiments, an E2E (End to End) connection may also be established between UEs 11. In some embodiments, the wireless communication system may further include a network management device 13.
As shown in fig. 2, the present embodiment provides a HARQ-ACK transmission method, where the method, applied to a UE, includes:
s110: under the conditions that a disposable HARQ-ACK feedback mechanism is configured and PDSCH transmission of SPS is activated, when an HARQ process number corresponding to downlink data transmitted by PDSCH resources of a current SPS period is the last unused HARQ process number in an HARQ process number set in the use of the HARQ process number in the current round, triggering the disposable HARQ-ACK feedback;
s120: and reporting HARQ-ACK of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to a base station at one time based on the one-time HARQ-ACK feedback mechanism.
In this embodiment, the HARQ-ACK transmission method may be used for HARQ-ACK feedback of downlink data transmitted by PDSCH resources on the licensed spectrum and the unlicensed spectrum by the base station.
The one-time HARQ-ACK feedback mechanism is as follows: and reporting the HARQ-ACK of the HARQ process corresponding to all the HARQ process numbers to a transmission mechanism of the base station at one time.
The configuration information for HARQ-ACK transmission of semi-persistent scheduling may be pre-configured in the scheduling information of PDSCH resources, for example, the configuration information specifies a HARQ process number set, and a plurality of HARQ process numbers available for data transmitted by SPS PDSCH are included in one HARQ process number set.
For example, the base station may configure the PDSCH resources through higher layer signaling, e.g., Radio Resource Control (RRC) signaling. Specifically, for example, one of the period of the semi-persistent scheduling, the number of HARQ processes of the semi-persistent scheduling, and the HARQ process number set of the semi-persistent scheduling is configured through RRC signaling; and the information of the time slot where the PDSCH resource is located.
The HARQ process number corresponding to a PDSCH in the semi-persistent scheduling is determined based on the set of HARQ IDs available for the semi-persistent scheduling and the position of the time domain resource where the PDSCH is located. For example, the calculation formula of the HARQ process number includes, but is not limited to, the following formula:
HARQ processes ID＝[floor(CURRENT_slot×10/(numberOfSlotsPerFrame×periodicity))]mod nrofHARQ-Processes。
CURRENT_slot＝[(SFN×numberOfSlotsPerFrame)+slot number in the frame]。
the HARQ processes ID is the aforementioned HARQ process number. The CURRENT _ slot is the number of the time slot where the PDSCH resource is located; the periodicity is an SPS period in milliseconds, i.e., the interval between two adjacent SPS secondary PDSCH transmissions in a semi-persistent scheduled transmission; one of the SPS periods includes one SPS PDSCH transmission.
The numberofslotspersframe is the number of slots contained in one radio frame. SFN is the index of a radio frame. nrofHARQ-Processes is the total number of HARQ process numbers in the set of HARQ process numbers available for semi-persistent scheduling. The slot number in the frame is the relative slot index of the current slot in the radio frame to which it belongs.
Once the PDSCH resources are configured, the PDSCH resources may be activated through physical layer signaling, for example, an activation instruction is issued through Downlink Control Information (DCI), and at this time, the PDSCH transmission of SPS is activated, and Downlink data transmission may be performed according to the PDSCH resources. For example, the active DCI is CRC-scrambled with a special Radio Network Temporary Identity (RNTI), that is, CS-RNTI. In other embodiments, the DCI may further carry an offset value (offset), which may be a symbol offset value, where the symbol offset value is a starting position after a starting symbol by default in the semi-persistent scheduling signaling and is spaced apart by an interval equal to the symbol offset value for the PDSCH transmission of the SPS. In the embodiment of the application, if the current base station has configured the one-time HARQ-ACK feedback mechanism for the terminal, and the PDSCH transmission of the SPS is activated, that is, the SPS is transmitted based on the PDSCH resources, it is determined whether the HARQ process number corresponding to the downlink data transmitted by the PDSCH resources in the current SPS period is the last unused HARQ process number in the HARQ process number set in one round of HARQ process number use, and if so, HARQ-ACK transmission based on the one-time HARQ-ACK feedback mechanism is triggered. . After the SPS period equal to the number of HARQ process numbers contained in the HARQ process number set, the UE can automatically trigger the feedback of HARQ-ACK information without additional base station trigger signaling.
For example, if N HARQ process numbers are included in the HARQ process number set, the HARQ process numbers are available for PDSCH transmission for N consecutive SPS periods. When the HARQ process number in the HARQ process number set is used, a sequential traversal mode may be adopted, and if the HARQ process number used for PDSCH transmission in the current SPS period is the last unused HARQ process number in the current round of use, it indicates that the base station needs to receive HARQ-ACK. For example, when N is equal to 8, the HARQ process numbers in the HARQ process number set may be 0 to 7; if the HARQ process numbers are used in sequence, if the HARQ process number of the HARQ process corresponding to the PDSCH transmission of the current SPS period is 7, it indicates that the HARQ process number is the last unused HARQ process number in the current round of use.
One HARQ process number in the set of HARQ process numbers can only be used once in a round of HARQ process number usage. If N is equal to 16, the HARQ process numbers included in the HARQ process number set may be 0 to 15; each HARQ process number only allows PDSCH transmissions for the corresponding SPS period.
The UE will traverse all HARQ process numbers in the set of HARQ process numbers during a round of HARQ process number usage.
All the HARQ process numbers in the HARQ process numbers can be used by multiple rounds of circulation. For example, when the HARQ process number set includes 8 HARQ process numbers, and is 0 to 7, the HARQ process numbers used for PDSCH transmission in the 1 st to 8 th SPS periods are 0, 1, 2, 3, 4, 5, 6, and 7, respectively. The HARQ process numbers used for PDSCH transmissions for the 9 th to 16 th SPS periods are also 0, 1, 2, 3, 4, 5, 6, and 7, respectively.
The HARQ-ACK reporting UE based on the one-time HARQ-ACK feedback mechanism reports HARQ-ACK of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to the base station at one time.
Therefore, in the first aspect, the UE automatically triggers the one-time HARQ-ACK feedback mechanism; in the second aspect, the UE can automatically trigger HARQ-ACK feedback without the base station issuing a special trigger signaling or trigger bit, thereby reducing the overhead of the trigger signaling.
In some embodiments, as shown in fig. 3, the method further comprises:
s130: and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is not the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number in the current round, not triggering the use of the one-time HARQ-ACK mechanism.
If the HARQ process number corresponding to the current SPS period in the HARQ process number set is not the last unused HARQ process number, the one-time HARQ-ACK feedback mechanism is not triggered temporarily when all HARQ process numbers are not used once in the current round of HARQ process number use, so that each HARQ process number in the HARQ process number set is used, and the waste of the HARQ process numbers caused by the fact that some HARQ process numbers are not used is reduced.
In some embodiments, as shown in fig. 4, the method further comprises:
s101: receiving DCI activating the SPS PDSCH transmission;
s102: activating the SPS PDSCH transmission according to the DCI; wherein the DCI further comprises: a PRI information field and a time domain offset information field;
s121: determining PUCCH resources for transmitting the HARQ-ACK according to the PRI information domain;
s122: and determining the time slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information domain.
The PRI information field may include an index of a PUCCH resource. The time domain offset (K1) information field, the K1 information field indicating a slot offset between a PDSCH resource and a PUCCH resource that transmits HARQ-ACK; the slot offset may be: the number of slots of the interval.
Multiple PUCCH resource sets may be configured on one slot, with each resource set containing one or more PUCCH resources. And determining the PUCCH resource set according to the bit number occupied by the HARQ-ACK. Therefore, firstly, the time slot for sending the HARQ-ACK is determined according to the K1 information domain, then which PUCCH resource set on the time slot is determined to be selected according to the bit number occupied by the multiple HARQ-ACKs sent at one time, and then the PUCCH resource for sending the HARQ-ACK is selected from the selected PUCCH resource set according to the PRI information domain.
In some embodiments, the method further comprises:
and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is the last unused HARQ ID used in the current round in the HARQ process number set, determining that the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the next SPS period is the 1 st HARQ process number in the HARQ process number set.
That is, when the HARQ-ACK of the SPS PDSCH of the current round is not reported, the SPS period of the next round starts, and at this time, because the HARQ-ACK of all HARQ processes corresponding to the number of the HARQ process of one round uses the same PUCCH resource for reporting, the base station can determine the SPS PDSCH transmission of one round corresponding to each HARQ-ACK according to the PUCCH resource for transmitting the HARQ-ACK.
The HARQ process numbers in the HARQ process number set are ordered, and in one round of usage of the HARQ process numbers, the usage can be performed according to the ordering of the HARQ process numbers in the HARQ process number set.
The ordering in the HARQ process number set may be from small to large or from large to small according to the numerical values corresponding to the HARQ process numbers, or may be other orderings not according to the numerical values corresponding to the HARQ process numbers.
As shown in fig. 5, this embodiment provides a HARQ-ACK transmission method, where the method is applied in a base station, and includes:
s210: under the condition that a disposable HARQ-ACK feedback mechanism is used and the PDSCH transmission of the SPS is activated, transmitting downlink data on PDSCH resources of the current SPS period;
s220: and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number in the current round, receiving the HARQ-ACK of the HARQ process corresponding to all the HARQ process numbers in the HARQ process number set reported at one time based on the one-time HARQ-ACK feedback mechanism.
In this embodiment, the base station configures a one-time HARQ-ACK feedback mechanism for the UE through higher layer signaling. After the one-time HARQ-ACK feedback mechanism is triggered, the base station receives HARQ-ACK of the HARQ process corresponding to the HARQ process number on the corresponding PUCCH resource; therefore, the base station realizes the triggering of the one-time HARQ-ACK feedback mechanism by the UE under the condition of not sending the triggering bit of the one-time HARQ-ACK feedback mechanism, and has the characteristic of low signaling overhead.
S220: and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is not the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number in the current round, suspending the receiving work or the receiving preparation work of the HARQ-ACK corresponding to the one-time HARQ-ACK feedback mechanism.
And the HARQ process number corresponding to downlink data transmitted by the PDSCH resource of the current SPS period is not the HARQ process of the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number of the current round, namely other unused HARQ process numbers are also in the HARQ process number set in the use of the HARQ process number of the current round.
In some embodiments, as shown in fig. 6, the method further comprises:
s200: issuing DCI activating PDSCH transmission of the SPS; wherein the DCI further comprises: a PRI information field and a K1 information field;
s201: determining PUCCH resources for transmitting the HARQ-ACK according to the PRI information domain;
s202: and determining the time slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the K1 information field.
The sending down of the DCI may precede the step S210. The issuance of DCI triggers PDSCH transmission for SPS.
The DCI carries a K1 information field and a PRI information field, and based on the two information fields and the number of HARQ process numbers contained in the HARQ process number set, it can be determined that a PUCCH resource for transmitting HARQ-ACK is transmitted once the one-time HARQ-ACK feedback mechanism is triggered.
In some embodiments, the method further comprises:
and determining the SPS period corresponding to the HARQ-ACK with the same HARQ process number according to the PUCCH resource for transmitting the HARQ-ACK.
Due to the one-time HARQ-ACK feedback mechanism, HARQ-ACK of all HARQ processes can be transmitted by adopting the same PUCCH resource at one time. The HARQ-ACK transmitted by different PUCCH resources repeatedly uses the same HARQ process number, but the base station can distinguish the HARQ-ACK of different SPS periods using the same HARQ process number according to the time domain offset between the PUCCH resources and the PDSCH resources for transmitting downlink data, thereby avoiding confusion.
As shown in fig. 7, the present embodiment provides an apparatus for HARQ-ACK transmission, where the apparatus is applied to include:
a first triggering module 110, configured to trigger a one-time HARQ-ACK feedback when a HARQ process number corresponding to downlink data transmitted by a PDSCH resource of a current SPS period is a last unused HARQ process number in a HARQ process number set in use of a HARQ process number of a current round, under a condition that a one-time HARQ-ACK feedback mechanism is configured to be used and PDSCH transmission of a semi-persistent scheduling SPS is activated;
a first sending module 120, configured to report HARQ-ACKs of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to a base station at one time based on the one-time HARQ-ACK feedback mechanism.
In some embodiments, the first triggering module 110 and the first sending module 120 may be both program modules, and the program modules, when executed by a processor, can implement whether to trigger a one-time HARQ-ACK feedback mechanism, i.e. HARQ-ACK reporting based on the one-time HARQ-ACK feedback mechanism.
In other embodiments, the first triggering module 110 and the first sending module 120 may be both software and hardware combined modules; the soft and hard combining module can comprise a programmable array; the programmable array includes, but is not limited to: complex programmable arrays and field programmable arrays.
In still other embodiments, the first triggering module 110 and the first sending module 120 may both be pure hardware modules that include at least an application specific integrated circuit.
In some embodiments, the first triggering module 110 is further configured to not trigger the use of the one-time HARQ-ACK mechanism when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is not the last unused HARQ process number in the HARQ process number set in use of the HARQ process number of the current round.
In some embodiments, the apparatus further comprises:
a first receiving module configured to receive downlink control information DCI activating PDSCH transmission of the SPS;
an activation module configured to activate the SPS PDSCH transmission according to the DCI; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
a first determining module configured to determine a PUCCH resource for transmission of the HARQ-ACK according to the PRI information field;
a second determining module configured to determine a slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information field.
As shown in fig. 8, the present embodiment provides a HARQ-ACK transmission method, where the method is applied in a base station, and includes:
a second sending module 210, configured to transmit downlink data on PDSCH resources of a current SPS period under the condition that a one-time HARQ-ACK feedback mechanism is configured to be used and PDSCH transmission of a physical downlink shared channel of a semi-persistent scheduling SPS is activated;
the second receiving module 220 is configured to receive HARQ-ACKs of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set reported once based on the one-time HARQ-ACK feedback mechanism when the HARQ process number corresponding to downlink data transmitted by the PDSCH resource of the current SPS period is the last unused HARQ process number in the HARQ process number set in use of the HARQ process number of the current round.
In some embodiments, the second sending module 210 and the second receiving and sending module may be both program modules, and the program modules, when executed by a processor, can implement transmission of downlink data and reception of HARQ-ACK.
In other embodiments, the second sending module 210 and the second receiving and sending module may be both a software and hardware combination module; the soft and hard combining module can comprise a programmable array; the programmable array includes, but is not limited to: complex programmable arrays and field programmable arrays.
In some embodiments, the second sending module 210 and the second sending and receiving module may be hardware-only modules, and the hardware-only modules include at least an asic.
In some embodiments, the second sending module 210 is further configured to issue downlink control information DCI activating PDSCH transmission of the SPS; wherein the DCI is used to activate the SPS PDSCH transmission; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
a third determining module configured to determine a PUCCH resource for transmission of the HARQ-ACK according to the PRI information field;
a fourth determining module configured to determine a slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information field.
Two specific examples are provided below in connection with any of the embodiments described above:
example 1:
the invention provides a method for triggering UE to perform one-time HARQ-ACK feedback by a base station under the condition that the UE is configured with one-time HARQ-ACK feedback and the base station performs semi-persistent scheduling of PDSCH resources on an unauthorized channel.
And when the UE is configured to transmit the HARQ-ACK by using the one-time HARQ-ACK feedback mechanism and the SPS PDSCH transmission is activated, the UE triggers the one-time HARQ-ACK feedback mechanism every time the HARQ process number corresponding to the PDSCH resource of the current SPS period is used up as the set of the HARQ process numbers configured for the SPS PDSCH in a single time.
After the one-time HARQ-ACK feedback mechanism is triggered, the UE feeds back HARQ-ACK feedback information of all downlink HARQ processes. And if the HARQ process number corresponding to the PDSCH period of the current SPS period does not have a single set of HARQ process numbers which are used up for the SPS PDSCH configuration, triggering the one-time HARQ-ACK feedback of the UE.
Example 2:
the base station configures the UE with a one-time HARQ-ACK transmission and the UE is configured with a PDSCH transmission for SPS. The HARQ process number for PDSCH transmission for SPS is configured to be 0 to 4.
And the base station sends downlink data transmitted by PDSCH resources of 1 st, 2 nd and 3 rd SPS periods to the UE. The HARQ process numbers for SPS periods 1, 2, and 3 are 0, 1, and 2.
When the base station sends downlink data of PDSCH resource transmission of the 4 th SPS period to the UE, the HARQ process number corresponding to the 4 th SPS period is 3, and at this time, all HARQ process numbers in the HARQ process number set are exhausted once.
After receiving the downlink data transmitted by the SPS PDSCH resource, the UE triggers a one-time HARQ-ACK feedback mechanism. The PUCCH resources applicable to the one-time HARQ-ACK feedback mechanism are determined in the following manner:
according to the K1 information field in the DCI carrying the SPS configuration information, the time slot of the PUCCH resource carrying the HARQ-ACK can be determined;
the index of the PUCCH resource set can be determined according to the number of bits of the HARQ-ACK information needing to be fed back; i.e., PUCCH resource set index. Since the number of HARQ-ACK bits is common information that is already known by both the base station and the UE, it need not be indicated in the DCI. The number of bits may be equal to the number of HARQ processes.
According to the PRI information field in the DCI carrying the SPS configuration information, an index of a PUCCH resource used in the PUCCH resource set, that is, a PUCCH resource ID, may be determined.
When the UE has not sent HARQ-ACK, the transmission time of the 5 th SPS period has arrived, and at this time, the base station may continue to send data on the PDSCH resource of SPS, and the corresponding HARQ process number is ID 0. This behavior does not cause confusion of HARQ process numbers because the base station determines to know which PDSCH resources the one-time HARQ-ACK feedback transmitted on a certain PUCCH resource corresponds to downlink data transmitted.
An embodiment of the present application further provides a communication device, including:
a transceiver;
a memory;
and a processor, respectively connected to the transceiver and the memory, for controlling the transceiver to transmit and receive wireless signals by executing the computer-executable instructions stored in the memory, and implementing the HARQ-ACK transmission method provided in any of the foregoing embodiments, for example, the HARQ-ACK transmission method shown in any of fig. 2 to 6.
The communication device may include: the aforementioned terminal or base station.
The embodiment of the application also provides a computer-readable storage medium, wherein the computer-readable storage medium is stored with computer-executable instructions; the computer executable instructions, when executed by the processor, enable the HARQ-ACK transmission method provided by any of the foregoing embodiments, for example, the HARQ-ACK transmission method shown in any of fig. 2 to 6.
The communication device provided by the embodiment comprises: a transceiver, a memory, and a processor. Transceivers, including but not limited to transceiving antennas, may be used to interact with other devices. The memory may store computer-executable instructions; the processor is connected with the transceiver and the memory respectively, and can realize the uplink control HARQ-ACK transmission method provided by any technical scheme.
In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, for example, a memory including instructions, the instructions being executable by a processor, and the processor executing the instructions can implement the HARQ-ACK transmission method provided by any one of the foregoing technical solutions.
Fig. 9 is an illustration of a UE, which may be embodied as a mobile phone, a computer, a digital broadcast UE, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and/or the like, in accordance with an exemplary embodiment.
Referring to fig. 9, a UE800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.
The processing component 802 generally controls overall operation of the UE800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.
The memory 804 is configured to store various types of data to support operations at the UE 800. Examples of such data include instructions for any application or method operating on the UE800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 808 includes a screen that provides an output interface between the UE800 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the UE800 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the UE800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.
The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 814 includes one or more sensors for providing various aspects of state assessment for the UE 800. For example, the sensor component 814 may detect an open/closed status of the UE800, the relative positioning of components, such as a display and keypad of the UE800, the sensor component 814 may also detect a change in the position of the UE800 or a component of the UE800, the presence or absence of user contact with the UE800, the orientation or acceleration/deceleration of the UE800, and a change in the temperature of the UE 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 816 is configured to facilitate communications between the UE800 and other devices in a wired or wireless manner. The UE800 may access a wireless network based on a communication standard, such as Wi-Fi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the UE800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the UE800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
Fig. 10 is a schematic diagram of a base station. Referring to fig. 10, base station 900 includes a processing component 922, which further includes one or more processors, and memory resources, represented by memory 932, for storing instructions, e.g., applications, that are executable by processing component 922. The application programs stored in memory 932 may include one or more modules that each correspond to a set of instructions. Further, processing component 922 is configured to execute instructions to perform the PDCCH monitoring methods illustrated in fig. 4 and/or fig. 5.
The base station 900 may also include a power component 926 configured to perform power management of the base station 900, a wired or wireless network interface 950 configured to connect the base station 900 to a network, and an input/output (I/O) interface 958. The base station 900 may operate based on an operating system stored in memory 932, such as Windows Server (TM), Mac OS XTM, Unix (TM), Linux (TM), Free BSDTM, or the like.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (12)
1. A hybrid automatic repeat request-acknowledgement (HARQ-ACK) transmission method is applied to User Equipment (UE), and comprises the following steps:
under the condition that a disposable HARQ-ACK feedback mechanism is used and PDSCH (physical downlink shared channel) transmission of SPS is activated, triggering the disposable HARQ-ACK feedback when an HARQ process number corresponding to downlink data transmitted by PDSCH resources in a current SPS period is the last unused HARQ process number in an HARQ process number set in the use of the HARQ process number in the current round;
and reporting HARQ-ACK of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to a base station at one time based on the one-time HARQ-ACK feedback mechanism.
2. The method of claim 1, wherein the method further comprises:
and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is not the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number in the current round, not triggering the use of the one-time HARQ-ACK mechanism.
3. The method of claim 1, wherein the method further comprises:
receiving downlink control information DCI activating PDSCH transmission of the SPS;
activating the SPS PDSCH transmission according to the DCI; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
determining PUCCH resources for transmitting the HARQ-ACK according to the PRI information domain;
and determining the time slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information domain.
4. A HARQ-ACK transmission method of hybrid automatic repeat request response is applied to a base station and comprises the following steps:
under the condition that a disposable HARQ-ACK feedback mechanism is used and the PDSCH transmission of the SPS is activated, transmitting downlink data on the PDSCH resource of the current SPS period;
and when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is the last unused HARQ process number in the HARQ process number set in the use of the HARQ process number in the current round, receiving the HARQ-ACK of the HARQ process corresponding to all the HARQ process numbers in the HARQ process number set reported at one time based on the one-time HARQ-ACK feedback mechanism.
5. The method of claim 4, wherein the method further comprises:
sending down downlink control information DCI for activating PDSCH transmission of the SPS; wherein the DCI is used to activate the SPS PDSCH transmission; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indication PRI information domain and a time domain offset information domain;
determining PUCCH resources for transmitting the HARQ-ACK according to the PRI information domain;
and determining the time slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information domain.
6. An apparatus for HARQ-ACK transmission, wherein the apparatus is applied in a User Equipment (UE), and the apparatus comprises:
the first triggering module is configured to trigger the one-time HARQ-ACK feedback when an HARQ process number corresponding to downlink data transmitted by PDSCH resources of a current SPS period is the last unused HARQ process number in an HARQ process number set in the current round of HARQ process number use under the condition that a one-time HARQ-ACK feedback mechanism is configured and the PDSCH transmission of a semi-persistent scheduling SPS physical downlink shared channel is activated;
and the first sending module is used for reporting HARQ-ACK of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set to a base station at one time based on the one-time HARQ-ACK feedback mechanism.
7. The apparatus of claim 6, wherein the first triggering module is further configured to not trigger the use of the one-time HARQ-ACK mechanism when the HARQ process number corresponding to the downlink data transmitted by the PDSCH resource of the current SPS period is not a last unused HARQ process number in the HARQ process number set in use of the HARQ process number of the current round.
8. The apparatus of claim 6, wherein the apparatus further comprises:
a first receiving module configured to receive downlink control information DCI activating PDSCH transmission of the SPS;
an activation module configured to activate the SPS PDSCH transmission according to the DCI; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
a first determining module configured to determine a PUCCH resource for transmission of the HARQ-ACK according to the PRI information field;
a second determining module configured to determine a slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information field.
9. A hybrid automatic repeat request acknowledgement (HARQ-ACK) transmission device is applied to a base station and comprises the following components:
the second sending module is configured to transmit downlink data on PDSCH resources of a current SPS period under the condition that a disposable HARQ-ACK feedback mechanism is used and PDSCH transmission of a physical downlink shared channel of a semi-persistent scheduling SPS is activated;
and a second receiving module (220) configured to receive HARQ-ACKs of HARQ processes corresponding to all HARQ process numbers in the HARQ process number set reported at one time based on the one-time HARQ-ACK feedback mechanism when the HARQ process number corresponding to downlink data transmitted by the PDSCH resource of the current SPS period is the last unused HARQ process number in the HARQ process number set in use of the HARQ process number of the current round.
10. The apparatus of claim 9, wherein the second transmitting module is further configured to issue downlink control information DCI activating PDSCH transmission of the SPS; wherein the DCI is used to activate the SPS PDSCH transmission; wherein the DCI further comprises: a Physical Uplink Control Channel (PUCCH) resource indicates a PRI information domain and a time domain offset information domain;
a third determining module configured to determine a PUCCH resource for transmission of the HARQ-ACK according to the PRI information field;
a fourth determining module configured to determine a slot offset between the PDSCH resource of the current SPS period and the PUCCH resource for transmitting the HARQ-ACK according to the time domain offset information field.
11. A communication device, comprising:
a transceiver;
a memory;
a processor, coupled to the transceiver and the memory, respectively, configured to control transceiving of wireless signals by the transceiver by executing computer-executable instructions stored on the memory, and to implement the method provided by any of the preceding claims 1 to 3 or 4 to 5.
12. A computer storage medium having computer-executable instructions stored thereon; the computer executable instructions, when executed by a processor, enable the method as provided in any one of the preceding claims 1 to 3 or 4 to 5.
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