WO2018166360A1 - Transmission d'accusés de réception sur liaison montante dans un système de communication sans fil - Google Patents

Transmission d'accusés de réception sur liaison montante dans un système de communication sans fil Download PDF

Info

Publication number
WO2018166360A1
WO2018166360A1 PCT/CN2018/077868 CN2018077868W WO2018166360A1 WO 2018166360 A1 WO2018166360 A1 WO 2018166360A1 CN 2018077868 W CN2018077868 W CN 2018077868W WO 2018166360 A1 WO2018166360 A1 WO 2018166360A1
Authority
WO
WIPO (PCT)
Prior art keywords
acknowledgement
wireless
transmission period
available
laa
Prior art date
Application number
PCT/CN2018/077868
Other languages
English (en)
Inventor
Efstathios KATRANARAS
Thomas Winiecki
Guang Liu
Original Assignee
Jrd Communication (Shenzhen) Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jrd Communication (Shenzhen) Ltd filed Critical Jrd Communication (Shenzhen) Ltd
Priority to CN201880016320.2A priority Critical patent/CN110383922B/zh
Publication of WO2018166360A1 publication Critical patent/WO2018166360A1/fr

Links

Images

Classifications

    • 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
    • H04L1/1858—Transmission or retransmission of more than one copy of acknowledgement message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • 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
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • Embodiments of the present invention relate to the transmission of acknowledgements (ACK/NACKs) in a wireless communication system. They have particular applicability to wireless communication systems in which a channel access procedure, such as Listen Before Talk (LBT) , is followed before an ACK/NACK is transmitted, and more particularly, but not exclusively, to a wireless communication system utilising carrier aggregation across two different frequency bands.
  • LBT Listen Before Talk
  • LTE-LAA Long Term Evolution Licensed Assisted Access
  • LBT Listen Before Talk
  • LTE-LAA incorporates a Hybrid Automatic Repeat reQuest (HARQ) procedure to confirm successful decoding of transmissions.
  • HARQ Hybrid Automatic Repeat reQuest
  • the receiver determines whether the transmission is received as scheduled and successfully decoded, and sends an acknowledgement (ACK/NACK) based on the determination.
  • ACK/NACK is positive if the transmission is determined to have been received as scheduled and successfully decoded, and negative if the transmission is determined not to have been received as scheduled or to have been received as scheduled and not successfully decoded. If the ACK/NACK is negative, the transmission is repeated, this being referred to as a Retransmission (ReTX) .
  • ReTX Retransmission
  • the first acknowledgement having a first format that allows it to be transmitted in a first transmission period in a wireless uplink;
  • the second acknowledgement having a second format that allows it to be transmitted in a second transmission period in the wireless uplink, the second transmission period being at a later time and having a different duration to the first transmission period;
  • the wireless communication device to perform a first listen before talk operation to determine whether the wireless uplink is available and, if the wireless uplink is determined to be available by the first listen before talk operation then to transmit the first acknowledgement in the first transmission period, and, if the wireless uplink is determined not to be available by the first listen before talk operation, causing the wireless communication device to perform a second listen before talk operation to determine whether the wireless uplink is available and, if the wireless uplink is determined to be available by the second listen before talk operation then to transmit the second acknowledgement in the second transmission period.
  • the second acknowledgement may comprise fewer symbols than the first acknowledgement.
  • the indication may include information as to whether a plurality of different scheduled transmissions have been received over the wireless downlink and successfully decoded at the wireless communication device , the first acknowledgement may represent the information for the different scheduled transmissions and preparing the second acknowledgement may comprise selecting from the information such that the second acknowledgement represents the information for just some of the different scheduled transmissions.
  • the first acknowledgement and the second acknowledgement may represent the information for the different scheduled transmissions and preparing the second acknowledgement may comprise compressing the information such that the second acknowledgment is smaller than the first acknowledgement.
  • the order of symbols in the second acknowledgement may be different to the order of symbols in the first acknowledgement.
  • the first transmission period and the second transmission period are both in one scheduled slot of the wireless uplink.
  • a symbol representing a Demodulation Reference Signal, DMRS may occupy a first portion of the first acknowledgement and a second portion of the second acknowledgement, the first portion and second portion being spaced by different intervals of time from a beginning of the first acknowledgement and a beginning of the second acknowledgement respectively. It is particularly preferred that the first portion of the first acknowledgement and the second portion of the second acknowledgement occupied by the DMRS coincide in the scheduled slot. In other words, the position of the DMRS is the same in relation to the start of the scheduled slot but different when considered from the start of the first acknowledgement and from the start of the second acknowledgement.
  • the first portion of the first acknowledgement and the second portion of the second acknowledgement each correspond with a symbol.
  • the method may comprise, if the wireless uplink is determined not to be available by the second listen before talk operation, causing the wireless communication device to perform a third listen before talk operation to determine whether the wireless uplink is available and, if the wireless uplink is determined to be available by the third listen before talk operation then to transmit the second acknowledgement in a third transmission period, the third transmission period being at a later time to and of the same duration as the second transmission period.
  • the method may comprise preparing a third acknowledgement based on the indication, the third acknowledgement having a third format that allows it to be transmitted at a third transmission period in the wireless uplink, the third transmission period being at a later time to the first and second transmission periods; and if the wireless uplink is determined not to be available by the second listen before talk operation, causing the wireless communication device to perform a third listen before talk operation to determine whether the wireless uplink is available and, if the wireless uplink is determined to be available by the third listen before talk operation then to transmit the third acknowledgement in the third transmission period.
  • the method may comprise receiving scheduling information over the wireless downlink, which scheduling information may include allocation of the first, second and third transmission periods in the wireless uplink.
  • the first transmission period may occupy the whole of the scheduled slot.
  • the wireless communication device may be operable in a primary frequency band and a secondary frequency band, the method comprising performing the first, second (and third) listen before talk operations in the secondary frequency band and, if the first, second (and third) listen before talk operations determine that the wireless uplink is unavailable in the second frequency band, then preparing a primary frequency band acknowledgement based on the indication and transmitting the primary frequency band acknowledgement over a wireless uplink in the primary frequency band.
  • a wireless communication device comprising:
  • a transceiver arranged to receive a scheduled transmission over a wireless downlink
  • a decoding module arranged to decode the scheduled transmission
  • a processing module configured to:
  • the first acknowledgement having a first format that allows it to be transmitted at a first transmission period in the wireless uplink;
  • the second acknowledgement having a second format that allows it to be transmitted at a second transmission period in the wireless uplink, the second transmission period being at a later time and having a different duration to the first transmission period;
  • the wireless communication device to perform a first listen before talk operation to determine whether the wireless uplink is available and, if the wireless uplink is determined to be available by the first listen before talk operation then to cause the transceiver to transmit the first acknowledgement in the first transmission period, and, if the wireless uplink is determined not to be available by the first listen before talk operation, causing the wireless communication device to perform a second listen before talk operation to determine whether the wireless uplink is available and, if the wireless uplink is determined to be available by the second listen before talk operation then to cause the transceiver to transmit the second acknowledgement at the second transmission period.
  • a non-transitory computer readable medium having computer readable instructions stored thereon for execution by a processor to perform the method according to the first aspect.
  • the non-transitory computer readable medium may comprise at least one from a group consisting of: a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a Read Only Memory, a Programmable Read Only Memory, an Erasable Programmable Read Only Memory, EPROM, an Electrically Erasable Programmable Read Only Memory and a Flash memory.
  • the processor may be a single processor or a plurality of processors. It may be a processing unit, chip, integrated circuit or electronic circuit. In some examples, the processor is dedicated to performance of the method according to the first aspect. In other examples, it may be a general purpose processor that performs the method according to the first aspect alongside, in combination with, in series or in parallel with other methods and tasks.
  • FIG. 1 is a simplified block diagram of a Long Term Evolution Licensed Assisted Access (LTE-LAA) wireless communication system according to a preferred embodiment
  • FIG. 2 is a simplified block diagram of a first User Equipment (UE) of the LTE-LAA wireless communication system
  • Figure 3 is a flow chart illustrating a method performed by the first UE according to a first version of the preferred embodiment.
  • Figure 4 is a diagram illustrating scheduling of symbols for transmission based on the method according to the first version of the preferred embodiment.
  • Figure 5 is a flow chart illustrating a method performed by the first UE according to a second version of the preferred embodiment.
  • Figures 6 is a diagram illustrating scheduling of symbols for transmission based on the method according to the second version of the preferred embodiment.
  • a wireless communication system comprises a primary base station operating in a primary frequency band, along with a primary base station and a secondary base station operating in a secondary frequency band.
  • the wireless communication system includes wireless communication devices each operating in both the primary frequency band and the secondary frequency band.
  • the wireless communication devices communicate wirelessly with the primary base station using the primary frequency band and with the primary base station and the secondary base station using the secondary frequency band.
  • LTE-LAA Long-Term Evolution Licensed Assisted-Access
  • 3GPP 3rd Generation Partnership Project
  • the preferred embodiment is modified appropriately to make it suitable for use with 5th Generation New Radio (5G NR) instead of LTE-LAA.
  • 5G NR 5th Generation New Radio
  • the primary frequency band and secondary frequency band are different to one another, in the sense that the two bands do not overlap one another.
  • the primary frequency band is one or more of the licensed frequency bands designated under in LTE-LAA, generally between 700 MHz and 2,600 MHz depending upon the country.
  • the secondary frequency band is one or more of the unlicensed frequency bands designated under in LTE-LAA, e.g. around 5GHz.
  • the wireless communication system is a LTE-LAA wireless communication system 100 and the wireless communication devices are referred to as User Equipments (UEs) 102 1 , 102 2 , ...102 N .
  • the UEs 102 1 , 102 2 , ...102 N are each any type of user device capable of wireless communication within the LTE-LAA wireless communication system 100, such as mobile telephone, mobile terminal, Smartphone, Personal Digital Assistant (PDA) , tablet computer, laptop computer, desktop computer or a wireless communication card, dongle etc. incorporated within or connected to another device.
  • PDA Personal Digital Assistant
  • the UEs 102 1 , 102 2 , ...102 N may be any general device requiring wireless connectivity, such as a domestic or commercial appliance, a means of transport, a package or part. Such connectivity may be achieved by incorporating an electronic circuit or chip capable of communicating in the LTE-LAA wireless communication system 100, turning the general device into a UE 102 1 , 102 2 , ...102 N .
  • the primary base station operating in the licensed frequency band is referred to as a Master enhanced Node B (MeNB) 104, and the physical space within which the MeNB 104 is capable of wireless communication with the UEs 102 1 , 102 2 , ...102 N is referred to as a Primary Cell (PCell) 105.
  • the primary base station operating in the secondary frequency band is referred to as a Primary Secondary enhanced Node B (PSeNB) 106, and the physical space within which the PSeNB 106 is capable of wireless communication with the UEs 102 1 , 102 2 , ...102 N is referred to as a Primary Secondary Cell (PSCell) 107.
  • PSeNB Primary Secondary enhanced Node B
  • PSCell Primary Secondary Cell
  • the secondary base station operating in the secondary frequency band is referred to as a Secondary enhanced Node B (SeNB) 108, and the physical space within which the SeNB 108 is capable of wireless communication with the UEs 102 1 , 102 2 , ...102 N is referred to as a Secondary Cell (SCell) 109.
  • the PSeNB 106 and the SeNB 108 are considered to be a group. Specifically, the PSeNB 106 and the SeNB 108 share Uplink Control Information (UCI) and are referred to as a UCI Cell Group (UCG) .
  • UCI Uplink Control Information
  • a backhaul interface 110 is provided that allows the MeNB 104, PSeNB 106 and SeNB 108 to communicate with one another outside of the licensed and unlicensed uplinks and downlinks of the LTE-LAA wireless communication system 100.
  • the backhaul interface 110 is coupled to the MeNB 104, PSeNB 106 and SeNB 108 via a wired network.
  • a first UE 102 1 comprises a processing module 200, which in turn comprises a decoding module 202, an encoding module 204 and a control module 206.
  • the processing module 200 is coupled to a first transceiver 208 and a second transceiver 210.
  • Each of the first transceiver 208 and second transceiver 210 has a receiver 212 and a transmitter 214.
  • the first transceiver 208 and second transceiver 210 are similar to one another, except that the first transceiver 208 operates in the primary frequency band, which in the preferred embodiment is the licensed frequency band, and the second transceiver 210 operates in the secondary frequency band, which in the preferred embodiment is the unlicensed frequency band.
  • first transceiver 208 and the second transceiver 210 are coupled to a common antenna 216, but in other embodiments two antennas are provided, one for each of the first transceiver 208 and the second transceiver 210.
  • a computer readable medium 218 is provided for storing instructions in the form of a computer program 220.
  • the instructions enable the processing module 200, and the first UE 102 1 , to carry out the method described below.
  • the instructions are transferred to and stored in the processing module 200, allowing the computer readable medium 218 to be removable from the first UE 102 1 .
  • the computer readable medium 218 is remote from the UE 102 1 , and the instructions are transferred to the processing module 200 during manufacture.
  • the computer readable medium 218 is a computer storage device, such as a hard disc drive, flash drive or network storage device, and the instructions are transferred to the processing module 200 over a computer network, such as a Local Area Network, or via a local bus or other similar type of connection.
  • a computer network such as a Local Area Network, or via a local bus or other similar type of connection.
  • the instructions are transferred to the first UE 102 1 prior to the first UE 102 1 being operated in the LTE-LAA wireless communication system 100, it is also possible for the instructions to be updated from time to time, and such updates are usually communicated to the first UE 102 1 over the LTE-LAA wireless communication system 100.
  • operation of a licensed downlink from the MeNB 104 to the UEs 102 1 , 102 2 , ...102 N and a licensed uplink from the UEs 102 1 , 102 2 , ...102 N to the MeNB 104 generally complies with the LTE standard, for example as set out in 3GPP Release 13 dated 14 and 15 September 2015.
  • the licensed downlink and licensed uplink are each divided into subframes. Usually, each subframe extends one millisecond in the time domain. Each subframe includes a number of Orthogonal Frequency Division Multiplexing (OFDM) symbols. Typically, the number of OFDM symbols is fourteen. In the frequency domain, the available bandwidth is divided into adjacent subcarriers. The number of subcarriers varies according to the allocated bandwidth, with a spacing of 15 kHz typically being provided between each subcarrier in the frequency domain, and the OFDM symbols are allocated across the different subcarriers.
  • OFDM Orthogonal Frequency Division Multiplexing
  • subcarriers may be separated by different frequency spacings, such as 7.5 kHz, 30 kHz or 60 kHz, and for the subframes to have different durations, but in an event, the downlink and uplink are considered to be divided into Resource Elements (REs) across the time and frequency domains, with each RE relating to the time interval required to transmit one OFDM symbol on one of the subcarriers.
  • the REs are allocated in groups, referred to as Resource Blocks (RBs) , for different types of communication.
  • Each RB can include REs from different subcarriers, and usually has a length the same as a subframe, e.g. 14 REs or OFDM symbols.
  • CSI Channel State Information
  • CQI Channel Quality Information
  • PMI Precoding Matrix Indicators
  • RI Rank Indicators
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • data is transmitted from the UEs 102 1 , 102 2 , ...102 N to the MeNB 104 over RBs allocated to a Physical Uplink Shared Channel (PUSCH)
  • PUSCH Physical Uplink Shared Channel
  • UCI Uplink Control Information
  • the UCI includes the CSI, Signaling Requests (SRs) and acknowledgement information. It is also possible for the UCI to be transmitted from the UEs 102 1 , 102 2 , ...102 N to the MeNB 104 over the PUSCH.
  • An unlicensed downlink from the PSeNB 106 or the SeNB 108 to the UEs 102 1 , 102 2 , ...102 N and an unlicensed uplink from the UEs 102 1 , 102 2 , ...102 N to the PSeNB 106 or the SeNB 108 adopt very similar protocols to those of the licensed downlink and licensed uplink.
  • each of the unlicensed downlink and unlicensed uplink are divided into subframes. Each subframe extends one millisecond in the time domain. The number of OFDM symbols in each subframe is typically fourteen, and the spacing between subcarriers is typically 15 kHz.
  • REs are allocated in groups to different types of communication, broadly defining an unlicensed PDSCH, referred to as a LAA-PDSCH, and an unlicensed PDCCH, referred to as a LAA-PDCCH, in the unlicensed downlink.
  • an unlicensed PUSCH referred to as a LAA-PUSCH
  • an unlicensed PUCCH referred to as a LAA-PUCCH.
  • a Hybrid Automatic Repeat Request (HARQ) mechanism is used to mitigate errors that occur during transmission of data on the unlicensed downlink.
  • the PSeNB 106 or the SeNB 108 indicates that one of the UEs 102 1 , 102 2 , ...102 N is scheduled to receive a transmission on the LAA-PDSCH
  • the decoding module 202 of the respective UE 102 1 , 102 2 , ...102 N attempts to decode the LAA-PDSCH in the scheduled subframe.
  • the control module 206 of the respective UE 102 1 , 102 2 , ...102 N then prepares acknowledgement information based on whether the second transceiver 210 of the UE 102 1 , 102 2 , ...102 N receives the transmission in the scheduled subframe and whether the decoding module 202 of the respective UE 102 1 , 102 2 , ...102 N successfully decodes the transmission.
  • the acknowledgement information is transmitted to the PSeNB 106 or SeNB 108 over the LAA-PUCCH to inform the PSeNB 106 or the SeNB 108 whether the transmission was received by the second transceiver 210 of the respective UE 102 1 , 102 2 , ...102 N and correctly decoded by the decoding module 202 of the UE 102 1 , 102 2 , ...102 N .
  • the acknowledgement information is either a positive acknowledgement (ACK) indicating successful receiving and decoding or a negative acknowledgement (NACK) indicating a receiving or decoding failure.
  • the PSeNB 106 or the SeNB 108 determines whether to retransmit the data, e.g. send a retransmission (ReTX) .
  • Acknowledgement information for multiple transmissions can be grouped together for transmission over the LAA-PUCCH, and details of the acknowledgement information can be shared between the PSeNB 106 or SeNB 108 via the backhaul interface 110.
  • the encoding module 204 of the first UE 102 1 prepares a first acknowledgement, referred to as an LAA-PUCCH ACK/NACK 400 and a second acknowledgement, referred to as an LAA-sPUCCH ACK/NACK 402.
  • the LAA-PUCCH ACK/NACK 400 and LAA-sPUCCH ACK/NACK 402 represent the acknowledgement information using codewords based on an ACK/NACK codebook.
  • the LAA-PUCCH ACK/NACK 400 is suitable for sending in a scheduled subframe 404 of the unlicensed uplink, which subframe 404 comprises fourteen OFDM symbols 406, as discussed above.
  • DMRS Demodulation Reference Signal
  • the other OFDM symbols 406 comprise a payload that refers to codewords based on the ACK/NACK codebook, representing acknowledgement information.
  • the codewords needed to represent the acknowledgement information to be transmitted do not occupy all the available OFDM symbols 406 of the subframe 404 then the unused OFDM symbols 406 are either null or not transmitted.
  • other UCI information can be included in the LAA-PUCCH ACK/NACK 400, or the coding rate of the LAA-PUCCH ACK/NACK 400 is changed so as to use more OFDM symbols 406 for the same acknowledgement information.
  • the LAA-sPUCCH ACK/NACK 402 is shorter than the LAA-PUCCH ACK/NACK 400.
  • the LAA-sPUCCH ACK/NACK 402 comprises two OFDM symbols 406.
  • a first OFDM symbol 406 of the LAA-sPUCCH ACK/NACK 402 comprises a DMRS 408 and a second OFDM symbol 406 of the LAA-sPUCCH ACK/NACK 402 comprises a payload that refers to a codeword based on the ACK/NACK codebook representing some, but not necessarily all of the acknowledgement information.
  • the encoding module 204 selects the acknowledgement information for representation in the LAA-sPUCCH ACK/NACK 402 by selecting the acknowledgement information for the transmission corresponding to the earliest scheduled subframe 404.
  • Acknowledgement information for transmissions corresponding to later scheduled subframes 404 is selected for inclusion in LAA-PUCCH ACK/NACKs 400 and LAA-sPUCCH ACK/NACKs 402 prepared for transmission in subsequent subframes 404.
  • the acknowledgement information is therefore effectively multiplexed between different LAA-PUCCH ACK/NACKs 400 and LAA-sPUCCH ACK/NACKs 402.
  • the same acknowledgement information may be included in each of the LAA-PUCCH ACK/NACK 400 and LAA-sPUCCH ACK/NACK 402, but the information is compressed in the LAA-sPUCCH ACK/NACK 402 in order to be represented by the smaller payload.
  • the compression uses a bundling technique, which is known in LTE-LAA.
  • the first UE 102 1 performs a first LBT operation 410.
  • the first LBT operation 410 is performed immediately after the start of the subframe 404 that has been previously allocated in the uplink for sending the LAA-PUCCH ACK/NACK 400. If the first LBT operation 410 is successful, that is the bandwidth required to transmit LAA-PUCCH ACK/NACK 400 from the first UE 102 1 to the PSeNB 106 or the SeNB 108 is determined not to be already occupied, then the first UE 102 1 proceeds, at step 304, to transmit the LAA-PUCCH ACK/NACK 400 in the scheduled subframe 404.
  • the first UE 102 1 performs, at step 306, a second LBT operation 412.
  • the first LBT operation 410 and the second LBT operation 412 are the same.
  • an LBT operation known as a Category 2 (Cat-2) LBT operation is used as the first LBT operation 410, and the second LBT operation 412.
  • the second LBT operation 412 is an accelerated version of the first LBT operation 410, or a fast LBT operation.
  • An LBT operation known as a Category 4 (Cat-4) LBT operation is used as the first LBT operation 410, and an LBT operation known as a one-shot LBT operation is used as the second LBT operation 412.
  • the second LBT operation 412 is performed during the third OFDM symbol 406 of the scheduled subframe 404, so before the fourth OFDM symbol 406. If the second LBT operation 412 is successful, that is that the bandwidth required to transmit LAA-sPUCCH ACK/NACK 402 from the first UE 102 1 to the PSeNB 106 or the SeNB 108 is determined not to be already occupied, then the first UE 102 1 proceeds, at step 308, to transmit the LAA-sPUCCH ACK/NACK 402. The LAA-sPUCCH ACK/NACK 402 is transmitted in the fourth and fifth OFDM symbols 406 of the scheduled subframe 404.
  • the fourth OFDM symbol 406 of the scheduled subframe 404 is used for the DMRS 408, and since the first OFDM symbol 406 of the LAA-sPUCCH ACK/NACK 402 is the DMRS 408, the DMRS 408 remains in the allocated OFDM symbol 406 of the subframe 400.
  • the result of the second LBT operation 412 is unsuccessful, that is that the bandwidth required to transmit the LAA-sPUCCH ACK/NACK 402 from the first UE 102 1 to the PSeNB 106 or the SeNB 108 is already occupied, then the first UE 102 1 repeats, at step 310, the second LBT operation 414.
  • the second LBT operation 412 is repeated during the tenth OFDM symbol 406 of the scheduled subframe 404. If this second LBT operation 414 is successful, that is that the bandwidth required to transmit LAA-sPUCCH ACK/NACK 402 from the first UE 102 1 to the PSeNB 106 or the SeNB 108 is determined not to be already occupied, then the first UE 102 1 proceeds, again at step 308, to transmit the LAA-sPUCCH ACK/NACK 404. This time, the LAA-sPUCCH ACK/NACK 404 is transmitted in the eleventh and twelfth OFDM symbols 406 of the scheduled subframe 404.
  • the eleventh OFDM symbol 406 of the scheduled subframe 404 is used for the DMRS 408, and since the first OFDM symbol of the LAA-sPUCCH ACK/NACK 402 is the DMRS 408, the DMRS 408 again remains in the allocated OFDM symbol 406 of the subframe 400.
  • the result of the second LBT operation 412 is unsuccessful, that is that the bandwidth required to transmit the LAA-sPUCCH ACK/NACK 402 from the first UE 102 1 to the PSeNB 106 or the SeNB 108 is already occupied, then the first UE 102 1 proceeds, at step 312, to transmit the acknowledgement information over the licensed uplink.
  • the HARQ mechanism proceeds by the PSeNB 106 or the SeNB 108 receiving and decoding the LAA-PUCCH ACK/NACK 400 or the LAA-sPUCCH ACK/NACK 402, and sending ReTXs of any transmissions corresponding to negative acknowledgement information, based on the contents of the LAA-PUCCH ACK/NACK 400 or the LAA-sPUCCH ACK/NACK 402.
  • the MeSB 104 communicates the acknowledgement information to the PSeNB 106 or the SeNB 108 via the backhaul interface 110, and the PSeNB 106 or the SeNB 108 send ReTXs based on the acknowledgement information received via the MeNB 104.
  • the acknowledgement information is received at the PSeNB 106 or the SeNB 108, the acknowledgement information is demultiplexed if required.
  • the first UE 102 1 prepares the LAA-PUCCH ACK/NACK 400 and first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604.
  • the first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604 are again shorter than the LAA-PUCCH ACK/NACK 400.
  • the first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604 each comprise three OFDM symbols 406.
  • the first and second OFDM symbols 406 are codewords based on the ACK/NACK codebook representing some, but not necessarily all, of the acknowledgement information
  • the third OFDM symbol 406 comprises the DMRS 408.
  • the first and third OFDM symbols 406 are codewords based on the ACK/NACK codebook representing some, but not necessarily all, of the acknowledgement information, and the second OFDM symbol 406 comprises the DMRS 408.
  • the second and third OFDM symbols 406 are codewords based on the ACK/NACK codebook representing some, but not necessarily all, of the acknowledgement information, and the first OFDM symbol 406 comprises the DMRS 408.
  • the first UE 102 1 performs the first LBT operation 410.
  • the first LBT operation 410 is again performed immediately before the start of the subframe 404 that has been previously allocated in the unlicensed uplink for sending the LAA-PUCCH ACK/NACK 400. If the first LBT operation 410 is successful, that is the bandwidth required to transmit LAA-PUCCH ACK/NACK 400 from the first UE 102 1 to the PSeNB 106 or SeNB 108 is determined not to be already occupied, then the first UE 102 1 proceeds, at step 504, to transmit the LAA-PUCCH ACK/NACK 400 in the scheduled subframe 404.
  • the first UE 102 1 performs, at step 506, the second LBT operation 412.
  • the second LBT operation 412 is performed during the first OFDM symbol 406 of the subframe 404. If the second LBT operation 412 is successful, that is that the bandwidth required to transmit LAA-sPUCCH ACK/NACK 402 from the first UE 102 1 to the PSeNB 106 or the SeNB 108 is determined not to be already occupied, then the first UE 102 1 proceeds, at step 504, to transmit the first LAA-sPUCCH ACK/NACK 600.
  • the LAA-sPUCCH ACK/NACK 600 is transmitted in the second, third and fourth OFDM symbols 406 of the scheduled subframe 404.
  • the fourth OFDM symbol 406 of the scheduled subframe 404 is used for the DMRS 408, and since the third OFDM symbol 406 of the first LAA-sPUCCH ACK/NACK 600 is the DMRS 408, the DMRS 408 remains in the allocated OFDM symbol 406 of the subframe 400.
  • the first UE 102 1 determines, at step 510, whether there remains time in the subframe 400 to repeat the second LBT operation 412 and transmit one of the first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604 before the end of the subframe 400.
  • the second LBT operation 412 has been performed during the first OFDM symbol 406 of the subframe 404, at the time the second LBT operation 412 determines that the bandwidth required to transmit the first LAA-sPUCCH ACK/NACK 600 from the first UE 102 1 to the PSeNB 106 or the SeNB 108 is already occupied, thirteen OFDM symbols 406 remain potentially available in the subframe 400.
  • the first UE 102 1 therefore determines that there remains time in the subframe 400 to repeat the second LBT operation 412 and transmit one of the first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604 before the end of the subframe 400.
  • the UE 102 1 returns to step 506 and performs the second LBT operation 412 during the second OFDM symbol 406 of the subframe 404. If the second LBT operation 412 is successful, that is that the bandwidth required to transmit the second LAA-sPUCCH ACK/NACK 602 from the first UE 102 1 to the PSeNB 106 or SeNB 108 is determined not to be already occupied, then the first UE 102 1 proceeds, at step 508, to transmit the second LAA-sPUCCH ACK/NACK 600. The second LAA-sPUCCH ACK/NACK 602 is transmitted in the third, fourth and fifth REs 406 of the scheduled subframe 404.
  • the fourth OFDM symbol 406 of the scheduled subframe 404 is used for the DMRS 408, and since the second OFDM symbol 406 of the second LAA-sPUCCH ACK/NACK 602 is the DMRS 408, the DMRS 408 remains in the allocated OFDM symbol 406 of the subframe 400.
  • the first UE 102 1 determines, at step 510, whether there remains time in the subframe 400 to repeat the second LBT operation 412 and transmit one of the first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604 before the end of the subframe 400.
  • the second LBT operation 412 has been performed during the second OFDM symbol 406 of the subframe 404, at the time the second LBT operation 412 determines that the bandwidth required to transmit the first LAA-sPUCCH ACK/NACK 600 from the first UE 102 1 to the PSeNB 106 is already occupied, twelve OFDM symbols 406 remain potentially available in the subframe 400.
  • the first UE 102 1 therefore determines that there remains time in the subframe 400 to repeat the second LBT operation 412 and transmit one of the first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604 before the end of the subframe 400.
  • the UE 102 1 again returns to step 506 and performs the second LBT operation 412, this time during the third OFDM symbol 406 of the subframe 404. If the second LBT operation 412 is successful, that is that the bandwidth required to transmit the third LAA-sPUCCH ACK/NACK 604 from the first UE 102 1 to the PSeNB 106 or SeNB 108 is determined not to be already occupied, then the first UE 102 1 proceeds, at step 508, to transmit the third LAA-sPUCCH ACK/NACK 600. The third LAA-sPUCCH ACK/NACK 602 is transmitted in the fourth, fifth and sixth OFDM symbols 406 of the scheduled subframe 404.
  • the fourth OFDM symbol 406 of the scheduled subframe 404 is used for the DMRS 408, and since the first OFDM symbol of the third LAA-sPUCCH ACK/NACK 604 is the DMRS 408, the DMRS 408 remains in the allocated OFDM symbol 406 of the subframe 400.
  • the first UE 102 1 determines, at step 510, whether there remains time in the subframe 400 to repeat the second LBT operation 412 and transmit one of the first, second and third LAA-sPUCCH ACK/NACKs 600, 602, 604 before the end of the subframe 400.
  • the second LBT operation 412 can be performed in the eighth OFDM symbol 406, and the first LAA-sPUCCH ACK/NACK 600 can be transmitted in the ninth, tenth and eleventh REs 406, the second LBT operation 412 can be performed in the ninth OFDM symbol 406, and the second LAA-sPUCCH ACK/NACK 602 can be transmitted in the tenth, eleventh and twelfth REs 406, or the second LBT operation 412 can be performed in the tenth OFDM symbol 406, and the third LAA-sPUCCH ACK/NACK 604 can be transmitted in the eleventh, twelfth and thirteenth REs 406.
  • the first UE 102 1 proceeds, at step 508, to transmit the appropriate one of the first, second or third LAA-sPUCCH ACK/NACKs 600, 602, 604.
  • the first UE 102 1 proceeds, at step 312, to transmit the acknowledgement information over the licensed uplink. Alternatively, transmission of the acknowledgement information can be dropped.
  • the HARQ mechanism proceeds by the PSeNB 106 or SeNB 108 receiving and decoding the LAA-PUCCH ACK/NACK 400 or the first, second or third LAA- sPUCCH ACK/NACK 600, 602, 604, and sending ReTXs of any transmissions corresponding to negative acknowledgement information, based on the contents of the LAA-PUCCH ACK/NACK 400 or the first, second or third LAA-sPUCCH ACK/NACK 600, 602, 604.
  • the MeSB 104 communicates the acknowledgement information to the PSeNB 106 or the SeNB 108 via the backhaul interface 110, and the PSeNB 106 or the SeNB 108 send ReTXs based on the acknowledgement information received via the MeNB 104.
  • the times at which the LAA-sPUCCH ACK/NACKs 402, 600, 602, 604 of the embodiments described above are scheduled by the PSeNB 106 or the SeNB 108.
  • Other aspects operate in a similar way, and for the sake of simplicity are not repeated.
  • the subframe 404 includes one or more mini slots.
  • two mini slots are present, each of two OFDM symbols 406.
  • the mini slots coincide with the position of the LAA-sPUCCH ACK/NACKs 402 of the embodiment described with reference to Figure 4. That is, a first mini slot is provided at the fourth and fifth OFDM symbols 406 of the subframe 404 and a second mini slot is provided at the eleventh and twelfth OFDM symbols 406 of the subframe 404.
  • the mini slots can be provided at different OFDM symbols 406.
  • the mini slots are scheduled by the PSeNB 106 or the SeNB 108, the DMRS 408 of the mini slots need not coincide with the DMRSs 408 of the subframe 404.
  • the timing of the DMRS 408 in the mini slots is defined by the PSeNB 106 and the SeNB 108 and therefore expected by the PSeNB 106 and the SeNB 108 in the unlicensed uplink whenever scheduled.
  • the DMRS occupies less than one OFDM symbol 406 or spans part or the whole of more than one OFDM symbol. It is also possible for the acknowledgement information to be transmitted in just a single OFDM symbol 406 or to be multiplexed between different subcarriers at the same time.
  • the signal processing functionality of the embodiments of the invention especially the MeNB 104, PSeNB 106, SeNB 108 and UEs 102 1 , 102 2 , ...102 N may be achieved using computing systems or architectures known to those who are skilled in the relevant art.
  • Computing systems such as, a desktop, laptop or notebook computer, hand-held computing device (PDA, cell phone, palmtop, etc. ) , mainframe, server, client, or any other type of special or general purpose computing device as may be desirable or appropriate for a given application or environment can be used.
  • the computing system can include one or more processors which can be implemented using a general or special-purpose processing engine such as, for example, a microprocessor, microcontroller or other control module.
  • the computing system can also include a main memory, such as random access memory (RAM) or other dynamic memory, for storing information and instructions to be executed by a processor. Such a main memory also may be used for storing temporary variables or other intermediate information during execution of instructions to be executed by the processor.
  • the computing system may likewise include a read only memory (ROM) or other static storage device for storing static information and instructions for a processor.
  • ROM read only memory
  • the computing system may also include an information storage system which may include, for example, a media drive and a removable storage interface.
  • the media drive may include a drive or other mechanism to support fixed or removable storage media, such as a hard disk drive, a floppy disk drive, a magnetic tape drive, an optical disk drive, a compact disc (CD) drive or digital video disc (DVD) drive, read or write drive (R or RW) , or other removable or fixed media drive.
  • Storage media may include, for example, a hard disk, floppy disk, magnetic tape, optical disk, CD or DVD, or other fixed or removable medium that is read by and written to by media drive.
  • the storage media may include a computer-readable storage medium having particular computer software or data stored therein.
  • an information storage system may include other similar components for allowing computer programs or other instructions or data to be loaded into the computing system.
  • Such components may include, for example, a removable storage unit and an interface, such as a program cartridge and cartridge interface, a removable memory (for example, a flash memory or other removable memory module) and memory slot, and other removable storage units and interfaces that allow software and data to be transferred from the removable storage unit to computing system.
  • the computing system can also include a communications interface.
  • a communications interface can be used to allow software and data to be transferred between a computing system and external devices.
  • Examples of communications interfaces can include a modem, a network interface (such as an Ethernet or other NIC card) , a communications port (such as for example, a universal serial bus (USB) port) , a PCMCIA slot and card, etc.
  • Software and data transferred via a communications interface are in the form of signals which can be electronic, electromagnetic, and optical or other signals capable of being received by a communications interface medium.
  • computer program product may be used generally to refer to tangible medium such as, for example, a memory, storage device, or storage unit.
  • These and other forms of computer-readable media may store one or more instructions for use by the processor comprising the computer system to cause the processor to perform specified operations.
  • Such instructions generally referred to as ‘computer program code’ (which may be grouped in the form of computer programs or other groupings) , when executed, enable the computing system to perform functions of embodiments of the present invention.
  • the code may directly cause a processor to perform specified operations, be compiled to do so, and/or be combined with other software, hardware, and/or firmware elements (e.g., libraries for performing standard functions) to do so.
  • the software may be stored in a computer-readable medium and loaded into computing system using, for example, removable storage drive.
  • a control module in this example, software instructions or executable computer program code
  • the processor in the computer system when executed by the processor in the computer system, causes a processor to perform the functions of the invention as described herein.
  • inventive concept can be applied to any circuit for performing signal processing functionality within a network element. It is further envisaged that, for example, a semiconductor manufacturer may employ the inventive concept in a design of a stand-alone device, such as a microcontroller of a digital signal processor (DSP) , or application-specific integrated circuit (ASIC) and/or any other sub-system element.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • aspects of the invention may be implemented in any suitable form including hardware, software, firmware or any combination of these.
  • the invention may optionally be implemented, at least partly, as computer software running on one or more data processors and/or digital signal processors or configurable module components such as Field Programmable Gate Array (FPGA) devices.
  • FPGA Field Programmable Gate Array
  • the elements and components of an embodiment of the invention may be physically, functionally and logically implemented in any suitable way. Indeed, the functionality may be implemented in a single unit, in a plurality of units or as part of other functional units.

Landscapes

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

Abstract

L'invention concerne un procédé de transmission d'accusés de réception sur une liaison montante dans une communication sans fil LTE-LAA. Le procédé comprend la préparation d'un accusé de réception de LAA-PUCCH (400) et d'un accusé de réception de LAA-sPUCCH (402) qui est plus court que que l'accusé de réception de LAA-PUCCH (400). Un UE (102) 1 réalise une première opération LBT (410) pour déterminer si la liaison montante sans fil est disponible et, s'il est déterminé que la liaison montante sans fil est disponible par la première opération LBT (410), l'UE 102 1 transmet l'accusé de réception de LAA-PUCCH (400) dans une sous-trame (404). S'il est déterminé que la liaison montante sans fil n'est pas disponible par la première opération LBT (410), l'UE (102) 1 effectue une seconde opération LBT (412) dans la même sous-trame (404) pour déterminer si la liaison montante sans fil est disponible. S'il est déterminé que la liaison montante sans fil est disponible par la seconde opération LBT (412), l'UE (102) 1 transmet l'accusé de réception de LAA-sPUCCH (402) dans la sous-trame (404).
PCT/CN2018/077868 2017-03-13 2018-03-02 Transmission d'accusés de réception sur liaison montante dans un système de communication sans fil WO2018166360A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880016320.2A CN110383922B (zh) 2017-03-13 2018-03-02 无线通信系统上行链路中的传输确认

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1703978.5A GB2560523B (en) 2017-03-13 2017-03-13 Transmission of acknowledgements over uplink in wireless communication system
GB1703978.5 2017-03-13

Publications (1)

Publication Number Publication Date
WO2018166360A1 true WO2018166360A1 (fr) 2018-09-20

Family

ID=58605615

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/077868 WO2018166360A1 (fr) 2017-03-13 2018-03-02 Transmission d'accusés de réception sur liaison montante dans un système de communication sans fil

Country Status (3)

Country Link
CN (1) CN110383922B (fr)
GB (1) GB2560523B (fr)
WO (1) WO2018166360A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2565342A (en) * 2017-08-11 2019-02-13 Tcl Communication Ltd Pilot signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160345360A1 (en) * 2015-05-22 2016-11-24 Qualcomm Incorporated Clear channel assessment procedure at master and slave devices

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9743432B2 (en) * 2013-09-23 2017-08-22 Qualcomm Incorporated LTE-U uplink waveform and variable multi-subframe scheduling
US9929844B2 (en) * 2014-11-18 2018-03-27 Qualcomm Incorporated Techniques for transmitting preambles over an unlicensed radio frequency spectrum band
US11197317B2 (en) * 2014-12-23 2021-12-07 Qualcomm Incorporated Techniques for determining a symbol period for a starting symbol of a transmission in a shared radio frequency spectrum
US9781712B2 (en) * 2015-03-17 2017-10-03 Motorola Mobility Llc Method and apparatus for scheduling user equipment uplink transmissions on an unlicensed carrier
WO2016163709A1 (fr) * 2015-04-09 2016-10-13 삼성전자 주식회사 Procédé permettant d'attribuer des ressources dans un réseau cellulaire à l'aide d'une bande non autorisée et dispositif associé
US9967900B2 (en) * 2015-07-31 2018-05-08 Qualcomm Incorporated Methods and apparatus for multi-channel medium access control protocol
CN105898878B (zh) * 2016-06-02 2019-04-16 浙江大学 免许可频段下信令与数据的收发方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160345360A1 (en) * 2015-05-22 2016-11-24 Qualcomm Incorporated Clear channel assessment procedure at master and slave devices

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
3GPP,: "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Study on Licensed-Assisted Access to Unlicensed Spectrum; (Release 13)", VOL. V13.0.0, NO. TR 36.889, 30 June 2015 (2015-06-30), XP055540572 *

Also Published As

Publication number Publication date
GB201703978D0 (en) 2017-04-26
CN110383922A (zh) 2019-10-25
GB2560523A (en) 2018-09-19
CN110383922B (zh) 2023-05-23
GB2560523B (en) 2021-01-20

Similar Documents

Publication Publication Date Title
US10334576B2 (en) Systems and methods for uplink control information reporting with license-assisted access (LAA) uplink transmissions
US10531443B2 (en) Physical uplink control channel (PUCCH) format adaptation for 5th generation (5G) new radio (NR)
EP3408959B1 (fr) Systèmes et procédés de détermination de synchronisation de transmission harq-ack pour tti raccourci
EP2745593B1 (fr) Planification de communications
US9882696B2 (en) Devices for sending and receiving feedback information
US10873437B2 (en) Systems and methods for frequency-division duplex transmission time interval operation
CN108988995B (zh) 一种数据传输的方法和装置
CN110830176B (zh) 一种harq-ack发送方法、接收方法、终端及基站
EP3459195B1 (fr) Systèmes et procédés de fonctionnement d'intervalles de temps de transmission duplex à division en fréquence
EP3101982A1 (fr) Station de base, procédé de transmission, station mobile et procédé de commande de retransmission
EP2498561A1 (fr) Procédé et appareil de configuration de ressources de canal de commande de liaison montante
US10616888B2 (en) Multiple slot long physical uplink control channel (PUCCH) design for 5th generation (5G) new radio (NR)
JP6982622B2 (ja) Ｐｕｃｃｈのためのリソースシグナリング
CN109428680B (zh) 发送或接收上行数据的方法和装置
KR102238228B1 (ko) 제어 정보 송신 방법 및 장치, 및 제어 정보 수신 방법 및 장치
CN110710147B (zh) 用于pucch格式适配的用户设备、基站及通信方法
CN111670600B (zh) 用于为uci报告提供多个pucch资源的方法、用户设备及计算机可读介质
EP3711414B1 (fr) Conception de canal de commande de liaison montante physique, pucch, longue à intervalles multiples pour nouvelle radio, nr, de 5ème génération, 5g
CN115918193A (zh) 通信方法、终端设备和计算机可读介质
CN110752905B (zh) 通信方法及装置
WO2018166360A1 (fr) Transmission d'accusés de réception sur liaison montante dans un système de communication sans fil
WO2023079917A1 (fr) Considérations de ligne de temps et améliorations d'abandon de canal pour une résolution de collision entre de multiples pucch à priorité élevée avec harq-ack et un pusch à faible priorité
JP2022028839A (ja) Ｐｕｃｃｈのためのリソースシグナリング
CN116470992A (zh) 用户装备及基站
CN116456366A (zh) 用户装备及基站

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18767831

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18767831

Country of ref document: EP

Kind code of ref document: A1