WO2021109465A1 - Procédés et dispositifs pour construire un livre de codes de harq-ack pour un ordonnancement semi-persistant - Google Patents

Procédés et dispositifs pour construire un livre de codes de harq-ack pour un ordonnancement semi-persistant Download PDF

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Publication number
WO2021109465A1
WO2021109465A1 PCT/CN2020/090619 CN2020090619W WO2021109465A1 WO 2021109465 A1 WO2021109465 A1 WO 2021109465A1 CN 2020090619 W CN2020090619 W CN 2020090619W WO 2021109465 A1 WO2021109465 A1 WO 2021109465A1
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WIPO (PCT)
Prior art keywords
sps
slot
harq
determining
slot number
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PCT/CN2020/090619
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English (en)
Inventor
Wei Gou
Peng Hao
Xianghui HAN
Junfeng Zhang
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Zte Corporation
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Priority to CN202080093183.XA priority Critical patent/CN114946143B/zh
Priority to PCT/CN2020/090619 priority patent/WO2021109465A1/fr
Publication of WO2021109465A1 publication Critical patent/WO2021109465A1/fr

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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
    • H04L1/1829—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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • H04L1/1861—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK

Definitions

  • the present disclosure is directed generally to wireless communications. Particularly, the present disclosure relates to methods and devices for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) .
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • SPS semi-persistent scheduling
  • Wireless communication technologies are moving the world toward an increasingly connected and networked society.
  • High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user equipment (UE) and wireless access network nodes, including but not limited to radio access network (RAN) .
  • a semi-persistent scheduling (SPS) may be configured and activated when the UE receives from the RAN configuration and activation information for the SPS.
  • a SPS may be inactivated and may not receive activation information.
  • Some problems and/or issues may arise when the UE wants to construct the HARQ-ACK codebook for the inactivated SPS.
  • the present disclosure may address at least some of the issues and/or problems in constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for one or more SPSs.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • This document relates to methods, systems, and devices for wireless communication, and more specifically, for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) .
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • SPS semi-persistent scheduling
  • the present disclosure describes a method for wireless communication.
  • the method includes constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for at least one SPS by: determining, by a user equipment (UE) , a first slot set based on a set of slot numbers; determining, by the UE, a second slot set based on a configuration period of the at least one SPS; obtaining, by the UE, a common slot set based on the first slot set and the second slot set; and constructing, by the UE, the HARQ-ACK codebook for the at least one SPS based on the common slot set, the HARQ-ACK codebook comprising HARQ-ACK information corresponding to SPS PDSCH reception in the common slot set.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • the present disclosure describes a method for wireless communication.
  • the method includes constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for at least one SPS by: for at least one SPS no later than a predefined position in time domain: determining, by a user equipment (UE) , a first slot set based on a set of slot numbers, determining, by the UE, a second slot set based on a configuration period of the at least one SPS, obtaining, by the UE, a common slot set based on the first slot set and the second slot set, and constructing, by the UE, HARQ-ACK information for the at least one SPS no later than the predefined position in time domain based on the common slot set, the HARQ-ACK codebook comprising the HARQ-ACK information corresponding to SPS PDSCH reception in the common slot set.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • the present disclosure describes a method for wireless communication.
  • the method includes constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for at least one SPS by: receiving, by a user equipment (UE) , at least one SPS configuration signaling from a radio access network (RAN) ; determining, by the UE, a slot number for the at least one SPS based on the at least one SPS configuration signaling; and constructing, by the UE, the HARQ-ACK codebook for the SPS PDSCH reception for the at least one SPS based on the slot number.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • the present disclosure describes a method for wireless communication.
  • the method includes constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for more than one SPSs by determining, by a user equipment (UE) , a slot number for an inactivated SPS from the more than one SPSs based on a predefined rule.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • an apparatus for wireless communication may include a memory storing instructions and a processing circuitry in communication with the memory.
  • the processing circuitry executes the instructions, the processing circuitry is configured to carry out the above methods.
  • a device for wireless communication may include a memory storing instructions and a processing circuitry in communication with the memory.
  • the processing circuitry executes the instructions, the processing circuitry is configured to carry out the above methods.
  • a computer-readable medium comprising instructions which, when executed by a computer, cause the computer to carry out the above methods.
  • FIG. 1 shows an example of a wireless communication system.
  • FIG. 2 shows an example of a wireless network node.
  • FIG. 3 shows an example of a user equipment.
  • FIG. 4A shows a flow diagram of a method for wireless communication.
  • FIG. 4B shows a flow diagram of a method for wireless communication.
  • FIG. 4C shows a flow diagram of a method for wireless communication.
  • FIG. 5 shows a flow diagram of a method for wireless communication.
  • FIG. 6 shows a flow diagram of a method for wireless communication.
  • FIG. 7 shows a schematic diagram of a method for wireless communication.
  • the term “one or more” or “at least one” as used herein, depending at least in part upon context, may be used to describe any feature, structure, or characteristic in a singular sense or may be used to describe combinations of features, structures or characteristics in a plural sense.
  • terms, such as “a” , “an” , or “the” may be understood to convey a singular usage or to convey a plural usage, depending at least in part upon context.
  • the term “based on” or “determined by” may be understood as not necessarily intended to convey an exclusive set of factors and may, instead, allow for existence of additional factors not necessarily expressly described, again, depending at least in part on context.
  • the present disclosure describes methods and devices for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) .
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • SPS semi-persistent scheduling
  • FIG. 1 shows a wireless communication system 100 including a core network (CN) 110, a radio access network (RAN) 130, and one or more user equipment (UE) (152, 154, and 156) .
  • the RAN 130 may include a wireless network base station, or a NG radio access network (NG-RAN) base station or node, which may include a nodeB (NB, e.g., a gNB) in a mobile telecommunications context.
  • the core network 110 may include a 5G core network (5GC)
  • the interface 125 may include a new generation (NG) interface.
  • a first UE 152 may wirelessly receive downlink communication 142 from the RAN 130 and wirelessly send uplink communication 141 to the RAN 130.
  • a second UE 154 may wirelessly receive downlink communication 144 from the RAN 130 and wirelessly send uplink communication 143 to the RAN 130; and
  • a third UE 156 may wirelessly receive downlink communication 146 from the RAN 130 and wirelessly send uplink communication 145 to the RAN 130.
  • a downlink communication may include a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH)
  • a uplink communication may include a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) .
  • a RAN may send SPS configuration signaling to a UE (for example, the UE 152) to configure one or more SPSs for the UE.
  • a SPS may be activated when the UE receives a downlink control information (DCI) from the RAN including activation configuration information for the SPS.
  • the DCI may include a slot number for the SPS.
  • the slot number may include a k value or a k1 value, which is a number of slots in the interval, between the slot where a PDSCH is located and the slot where a HARQ-ACK of the PDSCH is located.
  • the UE if the UE detects a DCI format scheduling a PDSCH reception ending in slot n or if the UE detects a DCI format indicating a SPS PDSCH release through a PDCCH reception ending in slot n, the UE provides corresponding HARQ-ACK information in a PUCCH transmission within slot n+k.
  • the k is a number of slots and is indicated by the PDSCH-to-HARQ_feedback timing indicator field in the DCI format, if present, or provided by dl-DataToUL-ACK, or by dl-DataToUL-ACKForDCIFormat1_2 for DCI format 1_2.
  • Some of the one or more SPSs may be inactivated. There may be no configured slot number (k) for an inactivated SPS. There may be some problems and/or issues for constructing HARQ-ACK codebook for one or more SPSs including an inactivated SPS. Some of the problems may include challenges and difficulties of determining a value of the slot number for the inactivated SPS to make the SPS participate in the construction of the HARQ-ACK codebook Some of the problems may also include difficulties of constructing the HARQ-ACK codebook for an SPS that is not activated.
  • the present disclosure describes various embodiments for constructing a HARQ-ACK codebook for one or more SPSs, some of which may be inactivated.
  • the present disclosure may address at least some of the problems discussed above.
  • FIG. 2 shows an exemplary a radio access network or a wireless communication base station 200.
  • the base station 200 may include radio transmitting/receiving (Tx/Rx) circuitry 208 to transmit/receive communication with one or more UEs, and/or one or more other base stations.
  • the base station may also include network interface circuitry 209 to communicate the base station with other base stations and/or a core network, e.g., optical or wireline interconnects, Ethernet, and/or other data transmission mediums/protocols.
  • the base station 200 may optionally include an input/output (I/O) interface 206 to communicate with an operator or the like.
  • I/O input/output
  • the base station may also include system circuitry 204.
  • System circuitry 204 may include processor (s) 221 and/or memory 222.
  • Memory 222 may include an operating system 224, instructions 226, and parameters 228.
  • Instructions 226 may be configured for the one or more of the processors 124 to perform the functions of the base station.
  • the parameters 228 may include parameters to support execution of the instructions 226. For example, parameters may include network protocol settings, bandwidth parameters, radio frequency mapping assignments, and/or other parameters.
  • FIG. 3 shows an exemplary user equipment (UE) 300.
  • the UE 300 may be a mobile device, for example, a smart phone or a mobile communication module disposed in a vehicle.
  • the UE 300 may include communication interfaces 302, a system circuitry 304, an input/output interfaces (I/O) 306, a display circuitry 308, and a storage 309.
  • the display circuitry may include a user interface 310.
  • the system circuitry 304 may include any combination of hardware, software, firmware, or other logic/circuitry.
  • the system circuitry 304 may be implemented, for example, with one or more systems on a chip (SoC) , application specific integrated circuits (ASIC) , discrete analog and digital circuits, and other circuitry.
  • SoC systems on a chip
  • ASIC application specific integrated circuits
  • the system circuitry 304 may be a part of the implementation of any desired functionality in the UE 300.
  • the system circuitry 304 may include logic that facilitates, as examples, decoding and playing music and video, e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback; running applications; accepting user inputs; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections for, as one example, internet connectivity; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310.
  • decoding and playing music and video e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback
  • running applications accepting user inputs; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections for, as one example, internet connectivity; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the
  • the user interface 310 and the inputs/output (I/O) interfaces 306 may include a graphical user interface, touch sensitive display, haptic feedback or other haptic output, voice or facial recognition inputs, buttons, switches, speakers and other user interface elements. Additional examples of the I/O interfaces 306 may include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headset and microphone input /output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., IR sensors) , and other types of inputs.
  • USB Universal Serial Bus
  • the communication interfaces 302 may include a Radio Frequency (RF) transmit (Tx) and receive (Rx) circuitry 316 which handles transmission and reception of signals through one or more antennas 314.
  • the communication interface 302 may include one or more transceivers.
  • the transceivers may be wireless transceivers that include modulation /demodulation circuitry, digital to analog converters (DACs) , shaping tables, analog to digital converters (ADCs) , filters, waveform shapers, filters, pre-amplifiers, power amplifiers and/or other logic for transmitting and receiving through one or more antennas, or (for some devices) through a physical (e.g., wireline) medium.
  • the transmitted and received signals may adhere to any of a diverse array of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM) , frequency channels, bit rates, and encodings.
  • the communication interfaces 302 may include transceivers that support transmission and reception under the 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS) , High Speed Packet Access (HSPA) +, 4G /Long Term Evolution (LTE) , and 5G standards.
  • UMTS Universal Mobile Telecommunications System
  • HSPA High Speed Packet Access
  • LTE Long Term Evolution
  • 5G 5G
  • the system circuitry 304 may include one or more processors 321 and memories 322.
  • the memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328.
  • the processor 321 is configured to execute the instructions 326 to carry out desired functionality for the UE 300.
  • the parameters 328 may provide and specify configuration and operating options for the instructions 326.
  • the memory 322 may also store any BT, WiFi, 3G, 4G, 5G or other data that the UE 300 will send, or has received, through the communication interfaces 302.
  • a system power for the UE 300 may be supplied by a power storage device, such as a battery or a transformer.
  • the present disclosure describes several embodiments of methods and devices for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for at least one semi-persistent scheduling (SPS) , which may be implemented, partly or totally, on the wireless network base station and/or the user equipment described above in FIGS. 2 and 3.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • SPS semi-persistent scheduling
  • a method 400 for wireless communication includes constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for at least one SPS.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • SPS semi-persistent scheduling
  • PDSCH physical downlink shared channel
  • the method 400 may include a portion or all of the following steps: step 410, determining, by a user equipment (UE) , a first slot set based on a set of slot numbers; step 420, determining, by the UE, a second slot set based on a configuration period of the at least one SPS; step 430, obtaining, by the UE, a common slot set based on the first slot set and the second slot set; and step 440 constructing, by the UE, the HARQ-ACK codebook for the at least one SPS based on the common slot set, the HARQ-ACK codebook comprising HARQ-ACK information corresponding to SPS PDSCH reception in the common slot set.
  • UE user equipment
  • step 410 may be performed prior to step 420. In another implementation, step 410 may be performed after step 420. In another implementation, step 410 may be performed substantially same time as step 420.
  • the steps 410-440 of the method 400 may be applied to all SPS no matter whether it is activated or inactivated.
  • the HARQ-ACK codebook for the inactivated SPS is constructed based on the common slot set determined for the inactivated SPS.
  • the HARQ-ACK codebook for the activated SPS is constructed based on the common slot set determined for the activated SPS.
  • An inactivated SPS may be taken as an example for the following discussion.
  • the UE Before a UE wants to report a HARQ-ACK codebook through PUCCH or PUSCH, the UE may need to construct the HARQ-ACK codebook corresponding to the SPS PDSCH corresponding to one or more SPSs.
  • the UE may form HARQ-ACK information for the inactivated SPS and construct the HARQ-ACK codebook for the one or more SPSs as below.
  • the UE may determines a common slot set based on slot sets configured by radio resource control (RRC) signaling and the SPS period of the inactivated SPS, and then the UE may construct the HARQ-ACK codebook based on the common slot set.
  • RRC radio resource control
  • the UE may determine a first slot set based on a set of slot numbers.
  • the set of slot numbers may be a k set or a k1 set.
  • the UE may receive a first RRC message transmitted from a radio access network (RAN) .
  • the first RRC message may be a PUCCH_Config message.
  • the first RRC message includes the set of slot numbers.
  • the UE may determine a second slot set based on a configuration period of the SPS.
  • the UE may receive a second RRC message transmitted from the RAN, and the second RRC message may include the configuration period of the SPS.
  • the SPS configuration period is used by the UE to determine the second slot set slots by performing: step 422, determine slots of the SPS PDSCH transmission according to the period of SPS, and step 424, recording the slots as the second slot set.
  • the second slot set may also be determined based on an offset value, which indicates a start position for the SPS. For example but not limited to, when the configuration period of the SPS is 4 and the offset value is 0, the second slot set includes ⁇ 4, 8, 12, 16 ⁇ .
  • the UE obtains a common slot set based on the first slot set and the second slot set. For example, when the first slot set includes ⁇ 9, 7, 4 ⁇ and the second slot set includes ⁇ 4, 8, 12, 16 ⁇ , the common slot set may include ⁇ 4 ⁇ .
  • the UE construct the HARQ-ACK codebook for the SPS based on the common slot set and the HARQ-ACK codebook comprising HARQ-ACK information corresponding to SPS PDSCH reception in the common slot set. For example, when the common slot set includes ⁇ 4 ⁇ , the UE construct the the HARQ-ACK codebook including HARQ-ACK information corresponding to the SPS PDSCH reception in the slot ⁇ 4 ⁇ .
  • the method 400 may optionally further include a portion or all of the following steps: step 460, determining, by the UE, a third slot based on a slot number; and step 470, constructing, by the UE, HARQ-ACK information for the activated SPS based on the third slot, the HARQ-ACK codebook comprising the HARQ-ACK information corresponding to SPS PDSCH reception in the third slot.
  • the UE may determine the slot by using the value of K.
  • the value of the slot number may be configured in the activated DCI.
  • the UE may use the SPS PDSCH in the determined slot to construct the HARQ-ACK codebook.
  • the UE may determine a third slot based on a slot number.
  • a downlink control information (DCI) signaling includes the slot number for the activated SPS.
  • the third slot includes a slot at a slot position of N-K, wherein N corresponds to a slot for transmitting the HARQ-ACK codebook and K is the slot number.
  • the third slot is a single value, not a set of slot number.
  • the UE constructs the HARQ-ACK information for the activated SPS based on the third slot, and includes the HARQ-ACK information corresponding to SPS PDSCH reception in the third slot into the HARQ-ACK codebook.
  • the HARQ-ACK information corresponding to the SPS PDSCH of the SPS in the third slot is included in the HARQ-ACK codebook.
  • the method 400 may optionally further include, combining, by the UE, the HARQ-ACK information corresponding to the SPS PDSCH reception corresponding to the activated SPS and the HARQ-ACK information corresponding to the SPS PDSCH reception corresponding to the inactivated SPS as the HARQ-ACK codebook.
  • the present disclosure describes various embodiments of a method 500 for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for at least one SPS.
  • the method 500 may be a combination method for determining HARQ-ACK information for constructing the HARQ-ACK codebook.
  • the method 500 may combine a first method and a second method for SPS according to a predefined position in time domain (T) . In one implementation, for one or more SPSs at or before the predefined position in time domain (T) , the method 500 uses the first method; and, for one or more SPSs after the predefined position in time domain (T) , the method 500 uses the second method.
  • the first method may be related to steps 410-440 of the method 400; and the second method may be related to steps 460-470 of the method 400.
  • the method 500 may include a portion or all of the following steps: for at least one SPS no later than a predefined position in time domain: step 510, determining, by a user equipment (UE) , a first slot set based on a set of slot numbers, step 520, determining, by the UE, a second slot set based on a configuration period of the at least one SPS, step 530, obtaining, by the UE, a common slot set based on the first slot set and the second slot set, and step 540, constructing, by the UE, HARQ-ACK information for the at least one SPS no later than the predefined position in time domain based on the common slot set, the HARQ-ACK codebook comprising the HARQ-ACK information corresponding to SPS PDSCH reception in the common slot set; and for at least one SPS after the predefined position in time domain: step 550, determining, by the UE, a third slot based on a slot number, and step 560,
  • a predefined position in time domain may be associated with a position of a first physical uplink control channel or physical uplink shared channel (PUCCH/PUSCH) .
  • the method 500 may optionally include a step of determining, by the UE, the predefined position in time domain based on the first PUCCH/PUSCH.
  • the first PUCCH/PUSCH is determined as a PUCCH/PUSCH that will be transmitted to a RAN and comprises ACK information corresponding to a DCI comprising activation information for an SPS.
  • the first PUCCH/PUSCH is defined as: for an SPS, if the SPS is activated by an activated DCI, the ACK information corresponding to the activated DCI may be transmitted through a PUCCH or PUSCH, which is recorded as the first PUCCH/PUSCH.
  • the method 500 may optionally include a step of determining, by the UE, the predefined position in time domain as at least one of the following: a slot where the first PUCCH/PUSCH is located; the Qth slot after the slot where the first PUCCH/PUSCH is located; a starting position of a start symbol of the first PUCCH/PUSCH; an ending position of a last symbol of the first PUCCH/PUSCH; or an ending position of M symbols after the last symbol of the first PUCCH/PUSCH, where the M is a given integer.
  • the M is an integer.
  • the value of M is an integer of 0 ⁇ 50, inclusive.
  • M may be indicated to the UE by the RAN through signaling. In another implementation, M may be selected by the UE itself, and then be reported to the RAN.
  • Q is a given integer. For example but not limited to, the Q is one of 0, 1, 2, 3, ⁇ 20. Q may be a predefined value from 0 ⁇ 20, Q may be indicated to the UE by the RAN through signaling, or Q may be selected by the UE and be reported to the RAN.
  • a predefined position in time domain may be associated with a location of the PDCCH where the activated DCI corresponding to a SPS is located.
  • the UE may determine the predefined position in time domain based on the position of the PDCCH carrying the activated DCI by at least one of the following: the Pth slot after the slot where the PDCCH carrying the activated DCI is located (where P is a given integer. For example but not limited to, the P is one of 0, 1, 2, 3, ⁇ 20.
  • P may be a predefined value from 0 ⁇ 20
  • P may be indicated to the UE by the RAN through signaling, or P may be selected by the UE and be reported to the RAN) , a slot where the PDCCH carrying the activated DCI is located, or an ending position of L symbols after the last symbol of the PDCCH carrying the activated DCI, where L is a given integer.
  • the L is one of 0, 1, 2, 3, ⁇ 50.
  • L may be indicated to the UE by the RAN through signaling, or L may be selected by the UE and be reported to the RAN.
  • the present disclosure describes various embodiments of a method 600 for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for at least one SPS.
  • the method 600 may include a portion or all of the following: step 610, receiving, by a user equipment (UE) , SPS configuration signaling from a radio access network (RAN) ; step 620, determining, by the UE, a slot number for the at least one SPS based on the at least one SPS configuration signaling; and step 630, constructing, by the UE, the HARQ-ACK codebook for the SPS PDSCH reception for the at least one SPS based on the slot number.
  • the step 620 may include determining, by the UE, a set of slot numbers for the at least one SPS based on the at least one SPS configuration signaling.
  • an inactivated SPS in at least one SPS may lack a corresponding activated DCI and therefore may lack a corresponding slot number (k value or k1 value) .
  • the at least one SPS configuration signaling may include a new parameter (k) , and the new parameter may serve as the slot number for the inactivated SPS.
  • the SPS configuration signaling may be a RRC signaling.
  • At least one SPS configuration signaling may include a new set of parameters (k set or k1 set) , which may be used as a set of slot numbers for at least one inactivated SPS.
  • a slot number is determined based on the set of slot numbers according to at least one of the following: a first value in the set of slot numbers, a last value in the set of slot numbers, a smallest value in the set of slot numbers, or a largest value in the set of slot numbers.
  • a PUCCH-config signaling may include a set of slot numbers; and the new parameter serving as a slot number may belong to the set of slot numbers.
  • the slot number or the set of slot numbers configured in the SPS configuration signaling may be a value or a subset in the set of slot number in the high-level signaling PUCCH-config.
  • the slot number is added in a SPS-ConfigList signaling and is used for constructing the HARQ-ACK codebook for SPS PDSCH reception for the SPSs configured in the SPS-ConfigList.
  • a new parameter or a new set of parameters which serves as at least one slot number for at least one SPS, may be added to the high-level signaling SPS-ConfigList, and the SPSs configured in the SPS-ConfigList shares the new parameter or the new set of parameters.
  • the at least one SPS configuration signaling includes a first slot number.
  • a DCI corresponding to the SPS includes a second slot number for the SPS.
  • the UE may determine which slot number may be used as the slot number for the SPS in various ways. In one way, the UE may determine that the second slot number as the slot number for the SPS. In another way, the UE may receive a RRC signaling from the RAN, the RRC signaling may indicate whether the first slot number or the second slot number is used as the construction HARQ-ACK codebook, and the UE may determine the slot number for the at least one SPS based on the RRC signaling.
  • the UE determines the first slot number as the slot number for the at least one SPS; and when the RRC signaling indicates the second slot number is used as the construction HARQ-ACK codebook, the UE determines the second slot number as the slot number for the at least one SPS.
  • the present disclosure describes various embodiments of a method 700 for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for more than one SPSs.
  • the method 700 may include step 710: determining, by a user equipment (UE) , a slot number for an inactivated SPS from the more than one SPSs based on a predefined rule.
  • the UE may want to report a HARQ-ACK codebook through PUCCH or PUSCH.
  • the UE may construct the HARQ-ACK codebook corresponding to SPS PDSCHs corresponding to one or more SPSs.
  • the SPSs includes inactivated SPS, the UE may determines the value of slot number (k) for the inactivated SPS based on one of several predefined rules.
  • the predefined rules may include that, when only one SPS of the more than one SPSs is activated, the UE determines the slot number for the inactivated SPS as a slot number of the activated SPS configuration. For example, among multiple SPSs, if only one of them is activated, the remaining inactivated SPS shares a k value of the activated SPS configuration.
  • the predefined rules may include that, when more than one SPSs of the more than one SPSs are activated, the UE may determine the slot number for the inactivated SPS as at least one of the following: a maximum slot number of a set of slot numbers corresponding to activated SPS configurations, or a minimum slot number of the set of slot numbers corresponding to the activated SPS configurations. For example, among the multiple SPS, if two or more of them are activated, the remaining inactivated SPS shares a maximum or a minimum k value from the at least one k values of the two or more activated SPSs.
  • the predefined rules may include that, when none of the more than one SPSs is activated, the UE may determine the slot number for the inactivated SPS as a default slot number, wherein the default slot number is predetermined based on a set of slot numbers configured in a PUCCH-config signaling by at least one of the following: a first value in the set of slot numbers, a last value in the set of slot numbers, a smallest value in the set of slot numbers, or a largest value in the set of slot numbers. For example, among the multiple SPSs, if none of the SPSs is activated, a default value of k is used.
  • the default value of k may be determined based on a set of k values received from a high-level signaling PUCCH-config via the following ways, for example but not limited to, the default k value is the first value, the last value, the smallest value, or the largest value of the set of k values in PUCCH-config.
  • the predefined rules may include that, when at least one SPS of the more than one SPSs is activated, the UE may determine the slot number for the activated SPS as a default slot number.
  • the default slot number is predetermined based on a set of slot numbers configured in a PUCCH-config signaling by at least one of the following: a first value in the set of slot numbers, a last value in the set of slot numbers, a smallest value in the set of slot numbers, or a largest value in the set of slot numbers.
  • the predefined rules may include that, when none of the more than one SPSs configured by a SPS-ConfigList signaling is activated, the UE may determine the slot number for the inactivated SPS as a default slot number.
  • the default slot number is predetermined based on a set of slot numbers configured in a PUCCH-config signaling by at least one of the following: a first value in the set of slot numbers, a last value in the set of slot numbers, a smallest value in the set of slot numbers, or a largest value in the set of slot numbers.
  • the UE may determine a k value for the SPSs based on a default k value.
  • the default k value may be one of the first k value, the last k value, the smallest k value, or the largest k value in the k set from the high-level signaling PUCCH-config.
  • the method 700 may optionally include that determining, by the UE, the slot number for the inactivated SPS as a default slot number.
  • the default slot number is predetermined based on a set of slot numbers configured in a PUCCH-config signaling by at least one of the following: a first value in the set of slot numbers, a last value in the set of slot numbers, a smallest value in the set of slot numbers, or a largest value in the set of slot numbers.
  • the present disclosure describes another embodiment for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for more than one SPSs.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • a DCI that may be denoted as release DCI and transmitted through the PDCCH may be sent to the UE for inactivating an SPS.
  • release DCI a DCI that may be denoted as release DCI and transmitted through the PDCCH
  • UE may need to provide corresponding HARQ-ACK for release DCI.
  • the HARQ-ACK corresponding to the release DCI may be associated with a SPS PDSCH of the SPS in slot n. That is, the SPS PDSCH may be used to determine a location in the HARQ-ACK codebook for the HARQ-ACK corresponding to the release DCI. In this way, the SPS PDSCH may not actually transmit the SPS PDSCH in slot n at its periodic position. Therefore, the UE , au only generates HARQ-ACK for release DCI.
  • the present disclosure describes various embodiments to solve at least the problems as below.
  • One of the problems is how a UE generate HARQ-ACK information corresponding to an inactivated SPS when the release DCI and the SPS PDSCH corresponding to the inactivated SPS are simultaneously transmitted in slot n.
  • the above problem may become more severe when a period of the SPS is 1 slot.
  • the embodiment may include some implementations of methods for addressing at least the above problem.
  • the UE may generate HARQ-ACK information only for release DCI. This implementation may not be optimal: the UE does not generate HARQ-ACK information for the SPS PDSCH actually transmitted in slot n, and then this SPS PDSCH may be necessarily retransmitted.
  • the UE may generate HARQ-ACK information separately for the release DCI and this SPS PDSCH, and the two HARQ-ACK information are transmitted in different PUCCH.
  • This implementation may solve the problem and avoid SPS PDSCH retransmission, and may need two PUCCHs.
  • the two PUCCHs may need to be in different slots or subslots.
  • Case 1 in a slot, if SPS release DCI is received before the end of the SPS PDSCH for the same SPS configuration.
  • Case 1-1 A UE is not required to receive the SPS PDSCH if HARQ-ACK for the SPS release and the SPS reception would map to different PUCCHs. One expected consequence may be to separate HARQ-ACK bits but NACK for the SPS PDSCH.
  • Case 1-2 A UE is not required to receive the SPS PDSCH if HARQ-ACK for the SPS release and the SPS reception would map to the same PUCCH. One expected consequence may be only 1 bit for SPS release.
  • Case 2 in a slot, if SPS release DCI is received after the end of the SPS PDSCH for the same SPS configuration.
  • Case 2-1 SPS PDSCH is received if HARQ-ACK for the SPS release and the SPS reception would map to different PUCCHs. One expected consequence may be to separate HARQ-ACK bits.
  • Case 2-2 A UE is not required to receive the SPS PDSCH if HARQ-ACK for the SPS release and the SPS reception would map to the same PUCCH. One expected consequence may be only 1 bit for SPS release.
  • the UE may generate HARQ-ACK information for the release DCI and the SPS PDSCH separately, and the two HARQ-ACK information is bound, that is, an AND operation is performed for the two HARQ-ACK information. Then the UE reports the information through the AND operation to the base station;
  • the UE may only generate HARQ-ACK information for release DCI and report it to the base station, which may be equivalent to the existing mechanism that HARQ-ACK information is only for inactivated DCI.
  • the present disclosure also describes a method for determining whether the SPS PDSCH is actually transmitted.
  • the method includes that the UE may determine whether the SPS PDSCH is transmitted in the resources of the SPS PDSCH according to a DMRS detection of the SPS PDSCH. If DMRS is detected, it is considered that SPS PDSCH is actually transmitted, otherwise, it is considered that SPS PDSCH is not actually transmitted. According to past simulation experience, the DMRS can be discovered by the UE with a high probability, for example, it can be used to detect the energy of the DMRS.
  • the base station may receive the HARQ-ACK information reported by the UE and consider it to be a bound HARQ-ACK information between the release DCI and SPS PDSCH.
  • the HARQ-ACK information may be obtained by performing an AND operation for HARQ-ACK information corresponding to the release DCI and HARQ-ACK information corresponding to the SPS PDSCH.
  • the base station receives the HARQ-ACK information reported by the UE, and considers it to be the HARQ-ACK information for the release DCI only.
  • One or more implementations/embodiments discussed above may ensure that HARQ-ACK information for inactivated DCI and SPS PDSCH is reported at the same time, and one PUCCH is used.
  • the present disclosure describes another embodiment for constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) reception for more than one SPSs.
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • a UE needs to construct a HARQ-ACK codebook for one or more SPS.
  • a transmission window may be used.
  • the HARQ-ACK information of the SPS PDSCH reception within this transmission window may be included in the HARQ-ACK codebook.
  • the HARQ-ACK codebook corresponding to one PUCCH/PUSCH may be transmitted in slot i, where the PUCCH/PUSCH is recorded as the second PUCCH/PUSCH.
  • the transmission window may include a starting position and an ending position.
  • the starting position of the transmission window may be after the first SPS PDSCH reception.
  • the first SPS PDSCH reception is an SPS PDSCH reception corresponding to the latest HARQ-ACK information in the previous HARQ-ACK codebook.
  • the end position of the transmission window may be a predefined position (denoted R) is in the time domain. R may be associated with the second PUCCH/PUSCH.
  • the UE needs to report a HARQ-ACK codebook for at least one SPS in slot i through PUCCH/PUSCH, then for an inactivated SPS1 from the at least one SPS, the HARQ-ACK codebook may include HARQ-ACK information corresponding to SPS PDSCH reception in a transmission window corresponding to the HARQ-ACK codebook. That is, the HARQ-ACK information of the SPS PDSCH reception after the first SPS PDSCH reception and before the R is included in the HARQ-ACK codebook.
  • the first SPS PDSCH is the latest SPS PDSCH reception among the SPS PDSCH receptions corresponding to the previous HARQ-ACK codebook.
  • the predefined position (R) in time domain may be as at least one of the following: a slot where the second PUCCH/PUSCH is located; a Sth slot before the slot where the second PUCCH/PUSCH is located; a starting position of a start symbol of the second PUCCH/PUSCH; an ending position of a last symbol of the second PUCCH/PUSCH; a starting position of B symbols before the last symbol of the second PUCCH/PUSCH, where the B is a given integer; or a starting position of B symbols before the starting symbol of the second PUCCH/PUSCH.
  • the S may be a given integer. For example but not limited to, the S is one of 0, 1, 2, 3, ⁇ 20. S may be a predefined value from 0 ⁇ 20, S may be indicated to the UE by the RAN through signaling, or S may be selected by the UE and be reported to the RAN.
  • the B may be a given integer. For example but not limited to, the B is one of 0, 1, 2, 3, ⁇ 50. B may be indicated to the UE by the RAN through signaling, or B may be selected by the UE and be reported to the RAN.
  • a UE may want to report a HARQ-ACK codebook through PUCCH or PUSCH, and the UE may construct this HARQ-ACK codebook corresponds to one or more SPS PDSCHs corresponding to SPSs.
  • the UE may not generate HARQ-ACK information for the SPSs and may not construct the HARQ-ACK codebook for the SPSs.
  • the present disclosure describes methods, apparatus, and computer-readable medium for wireless communication.
  • the present disclosure addressed the issues with constructing hybrid automatic repeat request acknowledgement (HARQ-ACK) codebook for semi-persistent scheduling (SPS) .
  • HARQ-ACK hybrid automatic repeat request acknowledgement
  • SPS semi-persistent scheduling
  • the methods, devices, and computer-readable medium described in the present disclosure may facilitate the performance of wireless communication by constructing HARQ-ACK codebook for SPS, thus improving efficiency and overall performance.
  • the methods, devices, and computer-readable medium described in the present disclosure may improves the overall efficiency of the wireless communication systems.

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

Abstract

La présente invention concerne des procédés, un système et des dispositifs permettant de construire un livre de codes d'accusé de réception de demande de répétition automatique hybride (HARQ-ACK) pour une réception de canal partagé de liaison descendante physique (PDSCH) à ordonnancement semi-persistant pour au moins un SPS. Le procédé comprend la détermination, par un équipement d'utilisateur (UE), d'un premier ensemble de créneaux en fonction d'un ensemble de numéros de créneau; et la détermination, par l'UE, d'un deuxième ensemble de créneaux en fonction d'une période de configuration du ou des SPS. Le procédé comprend également l'obtention, par l'UE, d'un ensemble de créneaux communs en fonction du premier ensemble de créneaux et du deuxième ensemble de créneaux. Le procédé comprend en outre la construction, par l'UE, du livre de codes de HARQ-ACK pour le ou les SPS en fonction de l'ensemble de créneaux communs. Le livre de codes de HARQ-ACK comprend des informations de HARQ-ACK correspondant à la réception de PDSCH SPS dans l'ensemble de créneaux communs.
PCT/CN2020/090619 2020-05-15 2020-05-15 Procédés et dispositifs pour construire un livre de codes de harq-ack pour un ordonnancement semi-persistant WO2021109465A1 (fr)

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