WO2017197296A1 - Sélection de classe de priorité destinée à une procédure d'accès à un canal d'accès aléatoire avec écoute de porteuse de liaison montante - Google Patents

Sélection de classe de priorité destinée à une procédure d'accès à un canal d'accès aléatoire avec écoute de porteuse de liaison montante Download PDF

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Publication number
WO2017197296A1
WO2017197296A1 PCT/US2017/032461 US2017032461W WO2017197296A1 WO 2017197296 A1 WO2017197296 A1 WO 2017197296A1 US 2017032461 W US2017032461 W US 2017032461W WO 2017197296 A1 WO2017197296 A1 WO 2017197296A1
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WIPO (PCT)
Prior art keywords
transmission
wireless network
circuitry
lbt
enb
Prior art date
Application number
PCT/US2017/032461
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English (en)
Inventor
Seau S. Lim
Jeongho Jeon
Youn Hyoung Heo
Original Assignee
Intel IP Corporation
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 Intel IP Corporation filed Critical Intel IP Corporation
Priority to CN201780024489.8A priority Critical patent/CN109076580A/zh
Publication of WO2017197296A1 publication Critical patent/WO2017197296A1/fr

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Classifications

    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
    • 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
    • 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
    • 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
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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]

Definitions

  • Next-generation wireless cellular communication systems based upon LTE and LTE-A systems are being developed, such as a fifth generation (5G) wireless system / 5G mobile networks system.
  • Next-generation wireless cellular communication systems may provide support for higher bandwidths in part by using unlicensed spectrum
  • Fig. 1 illustrates a scenario of an Evolved Node B (eNB) scheduling one or more User Equipments (UEs) within the same Maximum Channel Occupancy Time (MCOT), in accordance with some embodiments of the disclosure.
  • eNB Evolved Node B
  • UEs User Equipments
  • MCOT Maximum Channel Occupancy Time
  • FIG. 2 illustrates a scenario of an eNB scheduling one or more UEs for a subsequent MCOT via cross-burst scheduling, in accordance with some embodiments of the disclosure.
  • FIG. 3 illustrates a scenario of an eNB scheduling one or more UEs for a subsequent MCOT via cross-burst scheduling, in accordance with some embodiments of the disclosure.
  • Fig. 4 illustrates a scenario of an eNB transmitting on a PCell (or other licensed serving cell) scheduling one or more UEs transmitting on an LAA SCell via cross- carrier scheduling, in accordance with some embodiments of the disclosure.
  • FIG. 5 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure.
  • FIG. 6 illustrates hardware processing circuitries for a UE for Uplink (UL)
  • FIG. 7 illustrates hardware processing circuitries for an eNB for UL LBT channel access procedure, in accordance with some embodiments of the disclosure.
  • FIG. 8 illustrates methods for a UE for UL LBT channel access procedure, in accordance with some embodiments of the disclosure.
  • Fig. 9 illustrates methods for an eNB for UL LBT channel access procedure, in accordance with some embodiments of the disclosure.
  • Fig. 10 illustrates example components of a UE device, in accordance with some embodiments of the disclosure.
  • Various wireless cellular communication systems have been implemented or are being proposed, including a 3rd Generation Partnership Project (3GPP) Universal Mobile Telecommunications System (UMTS), a 3GPP Long-Term Evolution (LTE) system, a 3GPP LTE-Advanced system, and a 5th Generation wireless system / 5th Generation mobile networks (5G) system / 5th Generation new radio (NR) system.
  • 3GPP 3rd Generation Partnership Project
  • UMTS Universal Mobile Telecommunications System
  • LTE Long-Term Evolution
  • LTE-Advanced 3GPP LTE-Advanced
  • 5G wireless system 5th Generation mobile networks
  • 5G 5th Generation new radio
  • An LTE system may utilize a spectrum that is exclusively assigned to a corresponding LTE service provider or operator. Such LTE system operation may be referred to as LTE-in-Licensed-Spectrum, or simply LTE.
  • LTE-in-Licensed-Spectrum LTE-in-Licensed-Spectrum
  • LTE-U LTE-U-U
  • LTE system operation that integrates LTE and LTE-U, using Carrier Aggregation (CA) technology may be referred to as Licensed- Assisted Access (LAA) using LTE, or simply LAA.
  • LAA Licensed- Assisted Access
  • an LTE carrier may serve as a Primary cell (PCell) and one or more
  • LTE-U carriers may serve as Secondary cells (SCells).
  • SCells Secondary cells
  • 3GPP Release 13 defined a Downlink (DL) only design for LTE to utilize unlicensed spectrum.
  • DL Downlink
  • UL Uplink
  • LAA Uplink
  • a transmission burst may be initiated by one or more DL subframes, and may be followed by one or more UL subframes within a Maximum Channel Occupancy Time (MCOT) limit.
  • MCOT Maximum Channel Occupancy Time
  • PUSCH Physical Uplink Shared Channel
  • transmission of one or more UL subframes may be within a transmission burst limited by the MCOT, possibly initiated by one or more DL subframes.
  • an eNB Before transmission of the DL subframes, an eNB may perform a Cat-4 LBT procedure.
  • LAA SCell UL subframes may be scheduled via UL grant, which may be sent by self-scheduling (e.g., intra-carrier scheduling) or by cross-carrier scheduling.
  • FIG. 1 illustrates a scenario of an eNB scheduling one or more UEs within the same MCOT, in accordance with some embodiments of the disclosure.
  • a scenario 100 may comprise a stream 101 of transmissions on a wireless communications channel.
  • Stream 101 may comprise one or more DL subframes 110 followed by one or more UL subframes 120.
  • DL subframes 110 and UL subframes 120 may be within an MCOT.
  • One or more of DL subframes 110 may comprise a Physical Downlink Control
  • Some DL subframes 110 may comprise a PDCCH 112 carrying a puncture command 114, which may correspond with a blank inserted before a corresponding UL subframe 120. Some DL subframes 110 may comprise a PDCCH 112 carrying a no- blanking command 116, which may correspond with an absence of a blank inserted before a corresponding UL subframe 120.
  • scenario 100 may correspond with an eNB scheduling a UE within the same MCOT, with various subframes of latency between a DL subframe 110 and a corresponding UL subframe 120.
  • scenario 100 may correspond with four subframes of latency between DL subframes 110 and corresponding UL subframes 120.
  • FIG. 2 illustrates a scenario of an eNB scheduling one or more UEs for a subsequent MCOT via cross-burst scheduling, in accordance with some embodiments of the disclosure.
  • a scenario 200 may comprise a stream 201 of transmissions on a wireless communications channel.
  • Stream 201 may comprise one or more DL subframes 210 followed by one or more UL subframes 220.
  • stream 201 may comprise four DL subframes 210 followed by four UL subframes 220.
  • DL subframes 210 and UL subframes 220 may be within the same MCOT.
  • Stream 201 may also comprise one or more DL subframes 240 followed by one or more UL subframes 250.
  • stream 201 may comprise one DL subframe 240 followed by seven UL subframes 250.
  • Stream 201 may also comprise a Category-4 (Cat- 4) Listen-Before-Talk (LBT) procedure 230, which an eNB may perform before a DL subframe 240.
  • One or more DL subframes 210 may schedule (e.g., may provide a UL grant for) one or more UL subframes 250.
  • scenario 200 may correspond with multi-subframe scheduling with a fixed timing relationship, in which an eNB may schedule a UE for a subsequent MCOT via cross-burst scheduling.
  • the scheduling may be performed without a fixed timing relationship between a UL grant (e.g., a UL grant carried by one of DL subframes 240) and a Physical Uplink Shared Channel (PUSCH) transmission (e.g., a PUSCH transmission carried by one of UL subframes 250).
  • the eNB may indicate a start of a subsequent MCOT (which may be an immediately-subsequent MCOT, or a next MCOT) via PDCCH after performing a Cat-4 LBT procedure, such as Cat-4 LBT procedure 230.
  • a number K of subframes may transpire between an initial subframe of UL subframes 220 and an initial subframe of DL subframes 240.
  • K may be random.
  • K may be based on an outcome of an LBT procedure performed by an eNB.
  • transmission of one or more UL subframes may occur outside of an eNB-initiated transmission burst. Accordingly, in some embodiments, a UL subframe might not follow DL subframes.
  • an eNB may have already performed a Cat-4 LBT procedure at the start of an MCOT.
  • UEs communicating with the eNB may accordingly not be disposed to performing a Cat-4 LBT procedure before transmission of UL subframes.
  • a UE may perform no LBT procedure (e.g., where a DL-to-UL switching time is less than 16 microseconds (us)).
  • a UE may be disposed to perform a one-shot 25 us LBT procedure.
  • the eNB might not have performed a Cat-4 LBT procedure at the carrier of the UL transmission. Accordingly, the UE may be disposed to perform a Cat-4 LBT procedure before transmission of UL subframes.
  • Discussed herein are various mechanisms and methods for establishing how a
  • UE may determine which Cat-4 LBT priority class may be used for UL transmissions requiring performance of a Cat-4 LBT access channel procedure. Also discussed herein are various mechanisms and methods for establishing how an eNB may determine which priority class may be used, which may influence an MCOT determination. The mechanisms and methods may advantageously facilitate UL LAA access.
  • signals are represented with lines. Some lines may be thicker, to indicate a greater number of constituent signal paths, and/or have arrows at one or more ends, to indicate a direction of information flow. Such indications are not intended to be limiting. Rather, the lines are used in connection with one or more exemplary embodiments to facilitate easier understanding of a circuit or a logical unit. Any represented signal, as dictated by design needs or preferences, may actually comprise one or more signals that may travel in either direction and may be implemented with any suitable type of signal scheme.
  • connection means a direct electrical, mechanical, or magnetic connection between the things that are connected, without any intermediary devices.
  • coupled means either a direct electrical, mechanical, or magnetic connection between the things that are connected or an indirect connection through one or more passive or active intermediary devices.
  • circuit or “module” may refer to one or more passive and/or active components that are arranged to cooperate with one another to provide a desired function.
  • signal may refer to at least one current signal, voltage signal, magnetic signal, or data/clock signal. The meaning of "a,” “an,” and “the” include plural references.
  • the transistors in various circuits, modules, and logic blocks are Tunneling FETs (TFETs).
  • Some transistors of various embodiments may comprise metal oxide semiconductor (MOS) transistors, which include drain, source, gate, and bulk terminals.
  • MOS metal oxide semiconductor
  • the transistors may also include Tri-Gate and FinFET transistors, Gate All Around Cylindrical Transistors, Square Wire, or Rectangular Ribbon Transistors or other devices implementing transistor functionality like carbon nanotubes or spintronic devices.
  • MOSFET symmetrical source and drain terminals i.e., are identical terminals and are interchangeably used here.
  • a TFET device on the other hand, has asymmetric Source and Drain terminals.
  • Bi-polar junction transistors-BJT PNP/NPN, BiCMOS, CMOS, etc. may be used for some transistors without departing from the scope of the disclosure.
  • A, B, and/or C means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).
  • combinatorial logic and sequential logic discussed in the present disclosure may pertain both to physical structures (such as AND gates, OR gates, or XOR gates), or to synthesized or otherwise optimized collections of devices implementing the logical structures that are Boolean equivalents of the logic under discussion.
  • eNB may refer to a legacy LTE capable Evolved Node-B (eNB), a next-generation or 5G eNB, a
  • eNB Evolved Node-B
  • 5G eNB next-generation or 5G eNB
  • NB-IoT Narrowband Intemet-of-Things
  • CIoT Cellular Internet-of-Things
  • MTC Machine-Type Communication
  • UE may refer to a legacy LTE capable User Equipment (UE), a next generation or 5G UE, an NB-IoT capable UE, a CIoT capable UE, an MTC capable UE, and/or another mobile equipment for a wireless communication system.
  • UE may refer to a legacy LTE capable User Equipment (UE), a next generation or 5G UE, an NB-IoT capable UE, a CIoT capable UE, an MTC capable UE, and/or another mobile equipment for a wireless communication system.
  • Various embodiments of eNBs and/or UEs discussed below may process one or more transmissions of various types. Some processing of a transmission may comprise demodulating, decoding, detecting, parsing, and/or otherwise handling a transmission that has been received.
  • an eNB or UE processing a transmission may determine or recognize the transmission's type and/or a condition associated with the transmission. For some embodiments, an eNB or UE processing a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type. An eNB or UE processing a transmission may also recognize one or more values or fields of data carried by the transmission.
  • Processing a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission that has been received by an eNB or a UE through one or more layers of a protocol stack.
  • a protocol stack which may be implemented in, e.g., hardware and/or software-configured elements
  • Various embodiments of eNBs and/or UEs discussed below may also generate one or more transmissions of various types. Some generating of a transmission may comprise modulating, encoding, formatting, assembling, and/or otherwise handling a transmission that is to be transmitted. In some embodiments, an eNB or UE generating a transmission may establish the transmission's type and/or a condition associated with the transmission. For some embodiments, an eNB or UE generating a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type. An eNB or UE generating a transmission may also determine one or more values or fields of data carried by the transmission.
  • Generating a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission to be sent by an eNB or a UE through one or more layers of a protocol stack.
  • a protocol stack which may be implemented in, e.g., hardware and/or software-configured elements
  • resources may span various Resource Blocks (RBs),
  • PRBs Physical Resource Blocks
  • time periods e.g., frames, subframes, and/or slots
  • allocated resources e.g., channels, Orthogonal Frequency -Division Multiplexing (OFMD) symbols, subcarrier frequencies, resource elements (REs), and/or portions thereof
  • OFMD Orthogonal Frequency -Division Multiplexing
  • REs resource elements
  • allocated resources e.g., channels, OFDM symbols, subcarrier frequencies, REs, and/or portions thereof
  • allocated resources e.g., channels, OFDM symbols, subcarrier frequencies, REs, and/or portions thereof
  • FIG. 3 illustrates a scenario of an eNB scheduling one or more UEs for a subsequent MCOT via cross-burst scheduling, in accordance with some embodiments of the disclosure.
  • a scenario 300 may comprise a stream 301 of transmissions on a wireless communications channel.
  • Stream 301 may comprise one or more DL subframes 310 followed by one or more UL subframes 320.
  • Stream 301 may also comprise one or more Cat-4 LBT procedures 330 performed by one or more respectively corresponding UEs. Following LBT procedures 330, stream 301 may comprise one or more UL subframes 350, which may be transmitted by one or more UEs. Transmissions of UL subframes 350 from a UE may be preceded by a Clear Channel Assessment (CCA), which may be for self-deferral. DL subframes 310 and UL subframes 320 may be in one MCOT, and UL subframes 350 may be in a subsequent MCOT.
  • CCA Clear Channel Assessment
  • scenario 300 may correspond with an eNB scheduling one or more UEs for a subsequent MCOT (e.g., for the next MCOT) via cross-burst scheduling.
  • a fixed timing relationship may exist between a UL grant (e.g., a UL grant transmitted by one of DL subframes 310) and a subsequent PUSCH transmission (e.g., one or more of UL subframes 350).
  • FIG. 4 illustrates a scenario of an eNB transmitting on a PCell (or other licensed serving cell) scheduling one or more UEs transmitting on an LAA SCell via cross- carrier scheduling, in accordance with some embodiments of the disclosure.
  • a scenario 400 may comprise a first stream 401 of transmissions on a first wireless communications channel, and a second stream 402 of transmissions on a second wireless communications channel.
  • first stream 401 may correspond with transmissions on a PCell
  • second stream 402 may correspond with transmissions on an SCell (e.g., on an LAA SCell).
  • First stream 401 may comprise one or more DL subframes 410.
  • Second stream 402 may comprise a first LBT procedure 420 performed by a UE, followed by one or more UL subframes 430 in a first MCOT.
  • Second stream 402 may also comprise a second LBT procedure 440 performed by a UE (which may be the same UE that performed first LBT procedure 420 and transmitted UL subframes 430), followed by one or more UL subframes 450 in a second MCOT.
  • scenario 400 may correspond with an eNB scheduling a UE via cross-carrier scheduling, by transmitting a UL grant on a PCell (or other licensed serving cell) without performing LBT at the eNB.
  • Scenario 400 may subsequently comprise a UE performing an LBT procedure, then (if the LBT procedure indicates that the channel is idle) transmitting UL subframes in accordance with the schedule.
  • an eNB may inform a UE of a Cat-4 LBT priority class to use in Cat-4 LBT access channel procedures for UL transmissions (and/or for a logical channel/radio bearer, in some embodiments).
  • the eNB may inform the UE of the Cat-4 LBT priority class via Layer 1 (LI) signaling.
  • the eNB may inform the UE of the Cat-4 LBT priority class for a configured logical channel/radio bearer.
  • the eNB may inform the UE of the Cat-4 LBT priority class signaling by fixed mapping (e.g.,
  • a UE may then follow a Cat-4 LBT priority class (e.g., a Cat-4 LBT priority class signaled dynamically in LI signaling, or signaled semi-statically in RRC mapping, or determined by fixed mapping). For some embodiments, a UE may determine a Cat-4 LBT priority class to follow based on the number of subframes scheduled.
  • a Cat-4 LBT priority class e.g., a Cat-4 LBT priority class signaled dynamically in LI signaling, or signaled semi-statically in RRC mapping, or determined by fixed mapping.
  • a UE may determine a Cat-4 LBT priority class to follow based on the number of subframes scheduled.
  • the eNB may be informed about a highest Cat-4 LBT priority class or a lowest Cat-4 LBT priority class from the UE, either using a mechanism such as a Buffer Status Report (BSR), or a new Medium Access Control (MAC) Control Element (CE). This may facilitate an eNB's determination of an MCOT for the UL schedule, which may be in accordance with Table 1 below, showing various Contention Window (CW) parameters and their relationships with Channel Access Priority Classes.
  • BSR Buffer Status Report
  • CE Medium Access Control Element
  • QCI Quality-of-Service Class Identifier
  • Channel Access Priority Classes may be defined for use when performing downlink transmissions in LAA carriers.
  • Table 2 depicts which Channel Access Priority Classes might be used by traffic belonging to various QCIs, which may be standardized.
  • a non-standardized QCI e.g., an Operator specific QCI
  • a Channel Access Priority Class used for a non-standardized QCI might be the Channel Access Priority Class of a standardized QCI which best matches the traffic class of the non-standardized QCI
  • an LBT may be performed at an eNB, and the eNB may determine the priority class to use depending on DL traffic and/or an MCOT (e.g., a length of a DL transmission burst).
  • MCOT e.g., a length of a DL transmission burst.
  • Table 2 may also apply for UL transmissions.
  • additional enhancements may be advantageous when applying Table 2 to UL transmissions. For example, a UE Access Stratum (AS) may not know a QCI of a radio bearer.
  • AS UE Access Stratum
  • the QCI of the radio bearer may be signaled to the UE (for example, via RRC), or may be provided to the UE AS from the UE Non- Access Stratum (NAS).
  • NAS Non- Access Stratum
  • a mapping of operator specific QCI and/or a Cat-4 LBT priority class may be signaled to the UE.
  • a UE may select a Cat-4 LBT priority class.
  • QCI for each radio bearer may be assumed to be known to a UE AS, and Table 1 mapping between Cat-4 LBT priority class and QCI (or another such mapping, e.g., a mapping provided in 3GPP Release 13 LAA for DL transmissions) may be used.
  • Table 1 mapping between Cat-4 LBT priority class and QCI (or another such mapping, e.g., a mapping provided in 3GPP Release 13 LAA for DL transmissions) may be used.
  • the UE may select the Cat-4 LBT priority class based on inputs and/or rules described herein.
  • a first type of input to the selection may be the LBT
  • a second type of input to the selection may be the LBT Cat-4 priority class of the logical channels with data available to be transmitted, along with the UL schedule (e.g., a number of subframes) signaled by an eNB for use by the UE.
  • a third type of input to the selection may be a UL schedule (e.g., a number of subframes) signaled by an eNB for use by the UE.
  • a first type of rule may be to find a smallest value of the LBT Cat-4 priority classes among the logical channels/radio bearers that may use a full UL schedule.
  • a second type of rule may be to find a smallest value of the LBT Cat-4 priority classes among the logical channels/radio bearers that also satisfies a UL schedule (e.g., it might not use a full UL schedule).
  • a UE might use a more aggressive priority class than the priority class corresponding with an MCOT assigned by a network.
  • a priority class of a logical channel (e.g., of each logical channel) may be derived from Table 2 based on a QCI values of the logical channel.
  • a UE may receive a UL schedule of 2 subframes in a transmission burst, and the only logical channel that has data available to transmit may have a QCI of 1.
  • the UE may accordingly select LBT Cat-4 priority class 1 for a Cat-4 LBT procedure, if a Cat-4 channel access procedure is performed for the UL transmission.
  • a UE may receive a UL schedule of 4 subframes in a transmission burst, and logical channels having data available to transmit may have QCIs of 1 and 4.
  • the UE may be disposed to selecting the priority class for a Cat-4 LBT procedure corresponding with a QCI of 4, e.g., priority class 3.
  • a third type of rule may be to separately consider LBT Cat-4 priority classes of logical channels/radio bearers and a UL schedule, and to have a criterion to decide which priority class to use based upon a first and second parameter described herein (e.g., a parameter A and a parameter B).
  • Parameter A may be defined as the maximum of the priority class numbers of the available traffic in a buffer. For example, if only Voice-over-IP (VoIP) traffic is available in the buffer, then A may be priority class 1, whereas if both VoIP traffic and background traffic are available in the buffer, then A may be priority class 3.
  • Parameter B may be defined as the minimum of the priority class numbers whose MCOT is greater than or equal to a scheduled UL length by grant. For example, if four subframes are scheduled, then B may be priority class 3.
  • One criterion to decide which priority class to use may be to select the minimum of parameter A and parameter B.
  • parameter A may be priority class 1
  • parameter B may be priority class 3
  • the UE may select priority class 1.
  • parameter A may be priority class 3
  • parameter B may be priority class 3
  • the UE may select priority class 3.
  • a UE MAC may be disposed to providing the UE LI with possible Cat-4 LBT priority classes associated with the logical channels that have UL data available to send, which may advantageously facilitate the UE LI in picking a priority class that matches the MCOT (and/or length of the scheduled UL traffic).
  • a UE might not determine a Cat-4 LBT priority class to use based on UL scheduling and possible priority classes from a multiplexed MAC PDU. Instead, an eNB may signal a Cat-4 LBT priority class to a UE. For some embodiments, a UE may use a BSR to convey the logical channels that have data available to transmit, and an eNB may then use that information to determine the MCOT size (e.g., a number of scheduled UL subframes).
  • the MCOT size e.g., a number of scheduled UL subframes.
  • an eNB may know of the available UL data transmission (e.g., by Logical Channel Group (LCG) Identifier (ID), or by another identifier of the logical channels with data available for UL transmissions) via BSR on the radio bearers or logical channels.
  • the eNB may then assign a Cat-4 LBT priority class (if such assignment may be advantageous, depending on whether UL transmission is within an MCOT or outside an MCOT) in a PDCCH Downlink Control Information (DCI) when allocating the UL grant.
  • the Cat-4 LBT priority class may be based on a QCI of a radio bearer and/or logical channel mapped to an LCG ID.
  • PDCCH DCI may indicate an LCG ID that a UL grant corresponds to in order for a Logical Channel Prioritization procedure to multiplex the MAC Service Data Units (SDUs) of the logical channels associated with the LCG ID for the UL grant.
  • the Logical Channel Prioritization procedure may then use the UL grant for logical channels mapped to the LCG ID. If there are further resources available after all the data of the logical channels mapped to the LCG ID has been sent, the data of the logical channels of another LCG ID may use remaining resources of the UL grant.
  • an eNB may provide a semi-static mapping between an LBT priority class and a logical channel priority when configuring a Signaling Radio Bearer (SRB) and/or Data Radio Bearer (DRB) during an RRC configuration.
  • SRB Signaling Radio Bearer
  • DRB Data Radio Bearer
  • a fixed mapping for MAC CEs e.g., BSR and/or Power Headroom Report (PHR)
  • PHR Power Headroom Report
  • a regular BSR and PHR may have a Cat-4 LBT priority class of 1, and so on.
  • Fig. 5 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure.
  • Fig. 5 includes block diagrams of an eNB 510 and a UE 530 which are operable to co-exist with each other and other elements of an LTE network. High-level, simplified architectures of eNB 510 and UE 530 are described so as not to obscure the embodiments. It should be noted that in some embodiments, eNB 510 may be a stationary non-mobile device.
  • eNB 510 is coupled to one or more antennas 505, and UE 530 is similarly coupled to one or more antennas 525.
  • eNB 510 may incorporate or comprise antennas 505, and UE 530 in various embodiments may incorporate or comprise antennas 525.
  • antennas 505 and/or antennas 525 may comprise one or more directional or omni-directional antennas, including monopole antennas, dipole antennas, loop antennas, patch antennas, microstrip antennas, coplanar wave antennas, or other types of antennas suitable for transmission of RF signals.
  • antennas 505 are separated to take advantage of spatial diversity.
  • eNB 510 and UE 530 are operable to communicate with each other on a network, such as a wireless network.
  • eNB 510 and UE 530 may be in communication with each other over a wireless communication channel 550, which has both a downlink path from eNB 510 to UE 530 and an uplink path from UE 530 to eNB 510.
  • eNB 510 may include a physical layer circuitry 512, a MAC (media access control) circuitry 514, a processor 516, a memory 518, and a hardware processing circuitry 520.
  • MAC media access control
  • physical layer circuitry 512 includes a transceiver 513 for providing signals to and from UE 530.
  • Transceiver 513 provides signals to and from UEs or other devices using one or more antennas 505.
  • MAC circuitry 514 controls access to the wireless medium.
  • Memory 518 may be, or may include, a storage media/medium such as a magnetic storage media (e.g., magnetic tapes or magnetic disks), an optical storage media (e.g., optical discs), an electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash-memory-based storage media), or any tangible storage media or non-transitory storage media.
  • Hardware processing circuitry 520 may comprise logic devices or circuitry to perform various operations.
  • processor 516 and memory 518 are arranged to perform the operations of hardware processing circuitry 520, such as operations described herein with reference to logic devices and circuitry within eNB 510 and/or hardware processing circuitry 520.
  • eNB 510 may be a device comprising an application processor, a memory, one or more antenna ports, and an interface for allowing the application processor to communicate with another device.
  • UE 530 may include a physical layer circuitry 532, a MAC circuitry 534, a processor 536, a memory 538, a hardware processing circuitry 540, a wireless interface 542, and a display 544.
  • physical layer circuitry 532 includes a transceiver 533 for providing signals to and from eNB 510 (as well as other eNBs).
  • Transceiver 533 provides signals to and from eNBs or other devices using one or more antennas 525.
  • MAC circuitry 534 controls access to the wireless medium.
  • Memory 538 may be, or may include, a storage media/medium such as a magnetic storage media (e.g., magnetic tapes or magnetic disks), an optical storage media (e.g., optical discs), an electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash-memory -based storage media), or any tangible storage media or non-transitory storage media.
  • Wireless interface 542 may be arranged to allow the processor to communicate with another device.
  • Display 544 may provide a visual and/or tactile display for a user to interact with UE 530, such as a touch-screen display.
  • Hardware processing circuitry 540 may comprise logic devices or circuitry to perform various operations.
  • processor 536 and memory 538 may be arranged to perform the operations of hardware processing circuitry 540, such as operations described herein with reference to logic devices and circuitry within UE 530 and/or hardware processing circuitry 540.
  • UE 530 may be a device comprising an application processor, a memory, one or more antennas, a wireless interface for allowing the application processor to communicate with another device, and a touch-screen display.
  • FIG. 6 and 7 also depict embodiments of eNBs, hardware processing circuitry of eNBs, UEs, and/or hardware processing circuitry of UEs, and the embodiments described with respect to Fig. 5 and Figs. 6 and 7 can operate or function in the manner described herein with respect to any of the figures.
  • eNB 510 and UE 530 are each described as having several separate functional elements, one or more of the functional elements may be combined and may be implemented by combinations of software-configured elements and/or other hardware elements.
  • the functional elements can refer to one or more processes operating on one or more processing elements. Examples of software and/or hardware configured elements include Digital Signal Processors (DSPs), one or more microprocessors, DSPs, Field-Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Radio-Frequency Integrated Circuits (RFICs), and so on.
  • DSPs Digital Signal Processors
  • FPGAs Field-Programmable Gate Arrays
  • ASICs Application Specific Integrated Circuits
  • RFICs Radio-Frequency Integrated Circuits
  • a UE may include various hardware processing circuitries discussed herein (such as hardware processing circuitry 600 of Fig. 6), which may in turn comprise logic devices and/or circuitry operable to perform various operations.
  • UE 530 or various elements or components therein, such as hardware processing circuitry 540, or combinations of elements or components therein may include part of, or all of, these hardware processing circuitries.
  • one or more devices or circuitries within these hardware processing circuitries may be implemented by combinations of software-configured elements and/or other hardware elements.
  • processor 536 and/or one or more other processors which UE 530 may comprise
  • memory 538 and/or other elements or components of UE 530 (which may include hardware processing circuitry 540) may be arranged to perform the operations of these hardware processing circuitries, such as operations described herein with reference to devices and circuitry within these hardware processing circuitries.
  • processor 536 (and/or one or more other processors which UE 530 may comprise) may be a baseband processor.
  • an apparatus of UE 530 (or another UE or mobile handset), which may be operable to communicate with one or more eNBs on a wireless network, may comprise hardware processing circuitry 600.
  • hardware processing circuitry 600 may comprise one or more antenna ports 605 operable to provide various transmissions over a wireless communication channel (such as wireless
  • Antenna ports 605 may be coupled to one or more antennas 607 (which may be antennas 525).
  • hardware processing circuitry 600 may incorporate antennas 607, while in other embodiments, hardware processing circuitry 600 may merely be coupled to antennas 607.
  • Antenna ports 605 and antennas 607 may be operable to provide signals from a UE to a wireless communications channel and/or an eNB, and may be operable to provide signals from an eNB and/or a wireless communications channel to a UE.
  • antenna ports 605 and antennas 607 may be operable to provide transmissions from UE 530 to wireless communication channel 550 (and from there to eNB 510, or to another eNB).
  • antennas 607 and antenna ports 605 may be operable to provide transmissions from a wireless communication channel 550 (and beyond that, from eNB 510, or another eNB) to UE 530.
  • Hardware processing circuitry 600 may comprise various circuitries operable in accordance with the various embodiments discussed herein. With reference to Fig. 6, hardware processing circuitry 600 may comprise a first circuitry 610 and/or a second circuitry 620. First circuitry 610 may be operable to generate a first transmission carrying an identifier of one or more LCGs with data available for UL transmission via a BSR, the first transmission being for a PCell of the wireless network. Second circuitry 620 may be operable to process a second transmission carrying an LBT type indicator based upon the one or more LCGs, the second transmission being for an SCell of the wireless network. In some embodiments, hardware processing circuitry 600 may comprise an interface for transmitting the first transmission. For some embodiments, hardware processing circuitry 600 may comprise
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with a licensed spectrum of the wireless network.
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with an unlicensed spectrum of the wireless network.
  • the second transmission may carry a PDCCH DCI.
  • the LBT type indicator may be carried in a DCI of the second transmission.
  • the second transmission may carry a UL grant.
  • the LBT type indicator may comprise a Cat-4 LBT priority class.
  • the Cat-4 LBT priority class may be based upon one or more QCI respectively corresponding with the one or more LCGs.
  • first circuitry 610 and/or second circuitry 620 may be implemented as separate circuitries. In other embodiments, first circuitry 610 and second circuitry 620 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • Fig. 7 illustrates hardware processing circuitries for an eNB for UL LBT channel access procedure, in accordance with some embodiments of the disclosure.
  • an eNB may include various hardware processing circuitries discussed herein (such as hardware processing circuitry 700 of Fig. 7), which may in turn comprise logic devices and/or circuitry operable to perform various operations.
  • eNB 510 or various elements or components therein, such as hardware processing circuitry 520, or combinations of elements or components therein
  • eNB 510 may include part of, or all of, these hardware processing circuitries.
  • one or more devices or circuitries within these hardware processing circuitries may be implemented by combinations of software-configured elements and/or other hardware elements.
  • processor 516 (and/or one or more other processors which eNB 510 may comprise), memory 518, and/or other elements or components of eNB 510 (which may include hardware processing circuitry 520) may be arranged to perform the operations of these hardware processing circuitries, such as operations described herein with reference to devices and circuitry within these hardware processing circuitries.
  • processor 516 (and/or one or more other processors which eNB 510 may comprise) may be a baseband processor.
  • an apparatus of eNB 510 (or another eNB or base station), which may be operable to communicate with one or more UEs on a wireless network, may comprise hardware processing circuitry 700.
  • hardware processing circuitry 700 may comprise one or more antenna ports 705 operable to provide various transmissions over a wireless communication channel (such as wireless communication channel 550).
  • Antenna ports 705 may be coupled to one or more antennas 707 (which may be antennas 505).
  • hardware processing circuitry 700 may incorporate antennas 707, while in other embodiments, hardware processing circuitry 700 may merely be coupled to antennas 707.
  • Antenna ports 705 and antennas 707 may be operable to provide signals from an eNB to a wireless communications channel and/or a UE, and may be operable to provide signals from a UE and/or a wireless communications channel to an eNB.
  • antenna ports 705 and antennas 707 may be operable to provide transmissions from eNB 510 to wireless communication channel 550 (and from there to UE 530, or to another UE).
  • antennas 707 and antenna ports 705 may be operable to provide transmissions from a wireless communication channel 550 (and beyond that, from UE 530, or another UE) to eNB 510.
  • Hardware processing circuitry 700 may comprise various circuitries operable in accordance with the various embodiments discussed herein. With reference to Fig. 7, hardware processing circuitry 700 may comprise a first circuitry 710 and/or a second circuitry 720. First circuitry 710 may be operable to process a first transmission carrying an identifier of one or more LCGs with data available for UL transmission via a BSR, the first transmission being for a PCell of the wireless network. Second circuitry 720 may be operable to generate a second transmission carrying an LBT type indicator based upon the one or more LCGs, the second transmission being for an SCell of the wireless network. In some embodiments, hardware processing circuitry 700 may comprise an interface for receiving the first transmission. For some embodiments, hardware processing circuitry 700 may comprise an interface for transmitting the second transmission.
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with a licensed spectrum of the wireless network.
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with an unlicensed spectrum of the wireless network.
  • the second transmission may carry a PDCCH DCI.
  • the LBT type indicator may be carried in a DCI of the second transmission.
  • the second transmission may carry a UL grant.
  • the LBT type indicator may comprise a Cat-4 LBT priority class.
  • the Cat-4 LBT priority class may be based upon one or more QCI respectively corresponding with the one or more LCGs.
  • first circuitry 710 and/or second circuitry 720 may be implemented as separate circuitries. In other embodiments, first circuitry 710 and/or second circuitry 720 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • Fig. 8 illustrates methods for a UE for UL LBT channel access procedure, in accordance with some embodiments of the disclosure.
  • methods that may relate to UE 530 and hardware processing circuitry 540 are discussed herein.
  • the actions in the method 800 of Fig. 8 are shown in a particular order, the order of the actions can be modified. Thus, the illustrated embodiments can be performed in a different order, and some actions may be performed in parallel. Some of the actions and/or operations listed in Fig. 8 are optional in accordance with certain embodiments.
  • the numbering of the actions presented is for the sake of clarity and is not intended to prescribe an order of operations in which the various actions must occur. Additionally, operations from the various flows may be utilized in a variety of combinations.
  • machine readable storage media may have executable instructions that, when executed, cause UE 530 and/or hardware processing circuitry 540 to perform an operation comprising the methods of Fig. 8.
  • Such machine readable storage media may include any of a variety of storage media, like magnetic storage media (e.g., magnetic tapes or magnetic disks), optical storage media (e.g., optical discs), electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash- memory-based storage media), or any other tangible storage media or non-transitory storage media.
  • an apparatus may comprise means for performing various actions and/or operations of the methods of Fig. 8.
  • a method 800 may comprise a generating 810 and a processing 815.
  • generating 810 a first transmission carrying an identifier of one or more LCGs with data available for UL transmission via a BSR may be generated, the first transmission being for a PCell of the wireless network.
  • processing 815 a second transmission carrying an LBT type indicator based upon the one or more LCGs may be processed, the second transmission being for an SCell of the wireless network.
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with a licensed spectrum of the wireless network.
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with an unlicensed spectrum of the wireless network.
  • the second transmission may carry a PDCCH DCI.
  • the LBT type indicator may be carried in a DCI of the second transmission.
  • the second transmission may carry a UL grant.
  • the LBT type indicator may comprise a Cat-4 LBT priority class.
  • the Cat-4 LBT priority class may be based upon one or more QCI respectively corresponding with the one or more LCGs.
  • Fig. 9 illustrates methods for an eNB for UL LBT channel access procedure, in accordance with some embodiments of the disclosure.
  • various methods that may relate to eNB 510 and hardware processing circuitry 520 are discussed herein.
  • the actions in method 900 of Fig. 9 are shown in a particular order, the order of the actions can be modified. Thus, the illustrated embodiments can be performed in a different order, and some actions may be performed in parallel. Some of the actions and/or operations listed in Fig. 9 are optional in accordance with certain embodiments. The numbering of the actions presented is for the sake of clarity and is not intended to prescribe an order of operations in which the various actions must occur. Additionally, operations from the various flows may be utilized in a variety of combinations.
  • machine readable storage media may have executable instructions that, when executed, cause eNB 510 and/or hardware processing circuitry 520 to perform an operation comprising the methods of Fig. 9.
  • Such machine readable storage media may include any of a variety of storage media, like magnetic storage media (e.g., magnetic tapes or magnetic disks), optical storage media (e.g., optical discs), electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash- memory-based storage media), or any other tangible storage media or non-transitory storage media.
  • an apparatus may comprise means for performing various actions and/or operations of the methods of Fig. 9.
  • a method 900 may comprise a processing 910 and a generating 915.
  • processing 910 a first transmission carrying an identifier of one or more LCGs with data available for UL transmission via a BSR may be processed, the first transmission being for a PCell of the wireless network.
  • generating 915 a second transmission carrying an LBT type indicator based upon the one or more LCGs may be generated, the second transmission being for an SCell of the wireless network.
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with a licensed spectrum of the wireless network.
  • the PCell may be associated with a licensed spectrum of the wireless network
  • the SCell may be associated with an unlicensed spectrum of the wireless network.
  • the second transmission may carry a PDCCH DCI.
  • the LBT type indicator may be carried in a DCI of the second transmission.
  • the second transmission may carry a UL grant.
  • the LBT type indicator may comprise a Cat-4 LBT priority class.
  • the Cat-4 LBT priority class may be based upon one or more QCI respectively corresponding with the one or more LCGs.
  • a UE device 1000 may include application circuitry 1002, baseband circuitry 1004, Radio Frequency (RF) circuitry 1006, front-end module (FEM) circuitry 1008, a low-power wake-up receiver (LP-WUR), and one or more antennas 1010, coupled together at least as shown.
  • RF Radio Frequency
  • FEM front-end module
  • LP-WUR low-power wake-up receiver
  • the UE device 1000 may include additional elements such as, for example, memory /storage, display, camera, sensor, and/or input/output (I/O) interface.
  • the application circuitry 1002 may include one or more application processors.
  • the application circuitry 1002 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the processor(s) may include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc.).
  • the processors may be coupled with and/or may include memory /storage and may be configured to execute instructions stored in the memory /storage to enable various applications and/or operating systems to run on the system.
  • the baseband circuitry 1004 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the baseband circuitry 1004 may include one or more baseband processors and/or control logic to process baseband signals received from a receive signal path of the RF circuitry 1006 and to generate baseband signals for a transmit signal path of the RF circuitry 1006.
  • Baseband processing circuity 1004 may interface with the application circuitry 1002 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 1006.
  • the baseband circuitry 1004 may include a second generation (2G) baseband processor 1004A, third generation (3G) baseband processor 1004B, fourth generation (4G) baseband processor 1004C, and/or other baseband processor(s) 1004D for other existing generations, generations in development or to be developed in the future (e.g., fifth generation (5G), 6G, etc.).
  • the baseband circuitry 1004 e.g., one or more of baseband processors 1004A-D
  • the radio control functions may include, but are not limited to, signal modulation/demodulation, encoding/decoding, radio frequency shifting, etc.
  • modulation/demodulation circuitry of the baseband circuitry 1004 may include Fast-Fourier Transform (FFT), precoding, and/or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • encoding/decoding circuitry of the baseband circuitry 1004 may include convolution, tail-biting convolution, turbo, Viterbi, and/or Low Density Parity Check (LDPC) encoder/decoder functionality.
  • LDPC Low Density Parity Check
  • the baseband circuitry 1004 may include elements of a protocol stack such as, for example, elements of an EUTRAN protocol including, for example, physical (PHY), media access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), and/or RRC elements.
  • a central processing unit (CPU) 1004E of the baseband circuitry 1004 may be configured to run elements of the protocol stack for signaling of the PHY, MAC, RLC, PDCP and/or RRC layers.
  • the baseband circuitry may include one or more audio digital signal processor(s) (DSP) 1004F.
  • the audio DSP(s) 1004F may be include elements for compression/decompression and echo cancellation and may include other suitable processing elements in other embodiments.
  • Components of the baseband circuitry may be suitably combined in a single chip, a single chipset, or disposed on a same circuit board in some embodiments.
  • some or all of the constituent components of the baseband circuitry 1004 and the application circuitry 1002 may be implemented together such as, for example, on a system on a chip (SOC).
  • SOC system on a chip
  • the baseband circuitry 1004 may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry 1004 may support communication with an evolved universal terrestrial radio access network (EUTRAN) and/or other wireless metropolitan area networks (WMAN), a wireless local area network (WLAN), a wireless personal area network (WPAN).
  • EUTRAN evolved universal terrestrial radio access network
  • WMAN wireless metropolitan area networks
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • multi-mode baseband circuitry Embodiments in which the baseband circuitry 1004 is configured to support radio communications of more than one wireless protocol.
  • RF circuitry 1006 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry 1006 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • RF circuitry 1006 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 1008 and provide baseband signals to the baseband circuitry 1004.
  • RF circuitry 1006 may also include a transmit signal path which may include circuitry to up- convert baseband signals provided by the baseband circuitry 1004 and provide RF output signals to the FEM circuitry 1008 for transmission.
  • the RF circuitry 1006 may include a receive signal path and a transmit signal path.
  • the receive signal path of the RF circuitry 1006 may include mixer circuitry 1006 A, amplifier circuitry 1006B and filter circuitry 1006C.
  • the transmit signal path of the RF circuitry 1006 may include filter circuitry 1006C and mixer circuitry 1006 A.
  • RF circuitry 1006 may also include synthesizer circuitry 1006D for synthesizing a frequency for use by the mixer circuitry 1006A of the receive signal path and the transmit signal path.
  • the mixer circuitry 1006 A of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 1008 based on the synthesized frequency provided by synthesizer circuitry 1006D.
  • the amplifier circuitry 1006B may be configured to amplify the down-converted signals and the filter circuitry 1006C may be a low-pass filter (LPF) or band-pass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals.
  • Output baseband signals may be provided to the baseband circuitry 1004 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 1006A of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1006A of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 1006D to generate RF output signals for the FEM circuitry 1008.
  • the baseband signals may be provided by the baseband circuitry 1004 and may be filtered by filter circuitry 1006C.
  • the filter circuitry 1006C may include a low-pass filter (LPF), although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1006A of the receive signal path and the mixer circuitry 1006A of the transmit signal path may include two or more mixers and may be arranged for quadrature down-conversion and/or up-conversion respectively.
  • the mixer circuitry 1006A of the receive signal path and the mixer circuitry 1006A of the transmit signal path may include two or more mixers and may be arranged for image rejection (e.g., Hartley image rejection).
  • the mixer circuitry 1006 A of the receive signal path and the mixer circuitry 1006 A of the transmit signal path may be arranged for direct down-conversion and/or direct up-conversion, respectively.
  • the mixer circuitry 1006A of the receive signal path and the mixer circuitry 1006A of the transmit signal path may be configured for super-heterodyne operation.
  • the output baseband signals and the input baseband signals may be analog baseband signals, although the scope of the embodiments is not limited in this respect.
  • the output baseband signals and the input baseband signals may be digital baseband signals.
  • the RF circuitry 1006 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 1004 may include a digital baseband interface to communicate with the RF circuitry 1006.
  • ADC analog-to-digital converter
  • DAC digital-to-analog converter
  • a separate radio IC circuitry may be provided for processing signals for each spectrum, although the scope of the embodiments is not limited in this respect.
  • the synthesizer circuitry 1006D may be a fractional -N synthesizer or a fractional N/N+l synthesizer, although the scope of the embodiments is not limited in this respect as other types of frequency synthesizers may be suitable.
  • synthesizer circuitry 1006D may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 1006D may be configured to synthesize an output frequency for use by the mixer circuitry 1006A of the RF circuitry 1006 based on a frequency input and a divider control input.
  • the synthesizer circuitry 1006D may be a fractional N/N+l synthesizer.
  • frequency input may be provided by a voltage controlled oscillator (VCO), although that is not a requirement.
  • VCO voltage controlled oscillator
  • Divider control input may be provided by either the baseband circuitry 1004 or the applications processor 1002 depending on the desired output frequency.
  • a divider control input (e.g., N) may be determined from a look-up table based on a channel indicated by the applications processor 1002.
  • Synthesizer circuitry 1006D of the RF circuitry 1006 may include a divider, a delay-locked loop (DLL), a multiplexer and a phase accumulator.
  • the divider may be a dual modulus divider (DMD) and the phase accumulator may be a digital phase accumulator (DP A).
  • the DMD may be configured to divide the input signal by either N or N+l (e.g., based on a carry out) to provide a fractional division ratio.
  • the DLL may include a set of cascaded, tunable, delay elements, a phase detector, a charge pump and a D-type flip-flop.
  • the delay elements may be configured to break a VCO period up into Nd equal packets of phase, where Nd is the number of delay elements in the delay line.
  • Nd is the number of delay elements in the delay line.
  • synthesizer circuitry 1006D may be configured to generate a carrier frequency as the output frequency, while in other embodiments, the output frequency may be a multiple of the carrier frequency (e.g., twice the carrier frequency, four times the carrier frequency) and used in conjunction with quadrature generator and divider circuitry to generate multiple signals at the carrier frequency with multiple different phases with respect to each other.
  • the output frequency may be a LO frequency (fLO).
  • the RF circuitry 1006 may include an IQ/polar converter.
  • FEM circuitry 1008 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 1010, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 1006 for further processing.
  • FEM circuitry 1008 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 1006 for transmission by one or more of the one or more antennas 1010.
  • the FEM circuitry 1008 may include a TX/RX switch to switch between transmit mode and receive mode operation.
  • the FEM circuitry may include a receive signal path and a transmit signal path.
  • the receive signal path of the FEM circuitry may include a low-noise amplifier (LNA) to amplify received RF signals and provide the amplified received RF signals as an output (e.g., to the RF circuitry 1006).
  • LNA low-noise amplifier
  • the transmit signal path of the FEM circuitry 1008 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 1006), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 1010.
  • PA power amplifier
  • the UE 1000 comprises a plurality of power saving mechanisms. If the UE 1000 is in an RRC_Connected state, where it is still connected to the eNB as it expects to receive traffic shortly, then it may enter a state known as Discontinuous Reception Mode (DRX) after a period of inactivity. During this state, the device may power down for brief intervals of time and thus save power.
  • DRX Discontinuous Reception Mode
  • RRC Idle state where it disconnects from the network and does not perform operations such as channel quality feedback, handover, etc.
  • the UE 1000 goes into a very low power state and it performs paging where again it periodically wakes up to listen to the network and then powers down again. Since the device might not receive data in this state, in order to receive data, it should transition back to RRC Connected state.
  • An additional power saving mode may allow a device to be unavailable to the network for periods longer than a paging interval (ranging from seconds to a few hours). During this time, the device is totally unreachable to the network and may power down completely. Any data sent during this time incurs a large delay and it is assumed the delay is acceptable.
  • an eNB device may include components substantially similar to one or more of the example components of UE device 1000 described herein.
  • DRAM Dynamic RAM
  • Example 1 provides an apparatus of a User Equipment (UE) operable to communicate with one or more Evolved Node B (eNB) on a wireless network, comprising: one or more processors to: generate a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and process a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network; an interface for transmitting the first transmission to a Radio Frequency (RF) circuitry; and an interface for receiving the second transmission from the RF circuitry.
  • UE User Equipment
  • eNB Evolved Node B
  • example 2 the apparatus of example 1, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with a licensed spectrum of the wireless network.
  • example 3 the apparatus of either of examples 1 or 2, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 4 the apparatus of any of examples 1 through 3, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DCI).
  • PDCCH Physical Downlink Control Channel
  • DCI Downlink Control Information
  • example 5 the apparatus of any of examples 1 through 4, wherein the LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 6 the apparatus of any of examples 1 through 5, wherein the second transmission carries a UL grant.
  • Example 8 the apparatus of example 7, wherein the Cat-4 LBT priority class is based upon one or more Quality-of-Service Class Identifiers (QCI) respectively corresponding with the one or more LCGs.
  • QCI Quality-of-Service Class Identifiers
  • Example 9 provides a User Equipment (UE) device comprising an application processor, a memory, one or more antennas, a wireless interface for allowing the application processor to communicate with another device, and a touch-screen display, the UE device including the apparatus of any of examples 1 through 8.
  • UE User Equipment
  • Example 10 provides a method comprising: generating, for a User Equipment
  • UE a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and processing a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network.
  • LBT Listen-Before-Talk
  • example 11 the method of example 10, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with a licensed spectrum of the wireless network.
  • example 12 the method of either of examples 10 or 11, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 13 the method of any of examples 10 through 12, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DO).
  • PDCCH Physical Downlink Control Channel
  • DO Downlink Control Information
  • LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 15 the method of any of examples 10 through 14, wherein the second transmission carries a UL grant.
  • LBT type indicator comprises a Category-4 (Cat-4) LBT priority class.
  • Cat-4 LBT priority class is based upon one or more Quality-of-Service Class Identifiers (QCI) respectively corresponding with the one or more LCGs.
  • QCI Quality-of-Service Class Identifiers
  • Example 18 provides machine readable storage media having machine executable instructions stored thereon that, when executed, cause one or more processors to perform a method according to any of examples 10 through 17.
  • Example 19 provides an apparatus of a User Equipment (UE) operable to communicate with one or more Evolved Node B (eNB) on a wireless network, comprising: means for generating, for a User Equipment (UE), a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and means for processing a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network.
  • UE User Equipment
  • eNB Evolved Node B
  • example 20 the apparatus of example 19, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with a licensed spectrum of the wireless network.
  • example 21 the apparatus of either of examples 19 or 20, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 22 the apparatus of any of examples 19 through 21, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DO).
  • PDCCH Physical Downlink Control Channel
  • DO Downlink Control Information
  • LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 24 the apparatus of any of examples 19 through 23, wherein the second transmission carries a UL grant.
  • LBT type indicator comprises a Category-4 (Cat-4) LBT priority class.
  • Example 26 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User
  • UE operable to communicate with an Evolved Node-B (eNB) on a wireless network to perform an operation comprising: generate a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and process a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network.
  • LCGs Logical Channel Groups
  • BSR Buffer Status Report
  • LBT Listen-Before-Talk
  • example 28 the machine readable storage media of example 27, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with a licensed spectrum of the wireless network.
  • the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 30 the machine readable storage media of any of examples 27 through 29, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DCI).
  • PDCCH Physical Downlink Control Channel
  • DCI Downlink Control Information
  • example 31 the machine readable storage media of any of examples 27 through 30, wherein the LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 32 the machine readable storage media of any of examples 27 through 31, wherein the second transmission carries a UL grant.
  • the LBT type indicator comprises a Category -4 (Cat-4) LBT priority class.
  • example 34 the machine readable storage media of example 33, wherein the Cat-4 LBT priority class is based upon one or more Quality-of-Service Class Identifiers (QCI) respectively corresponding with the one or more LCGs.
  • QCI Quality-of-Service Class Identifiers
  • Example 35 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: one or more processors to: process a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and generate a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network; an interface for receiving the first transmission from a Radio Frequency (RF) circuitry; and an interface for transmitting the second transmission to the RF circuitry.
  • eNB Evolved Node B
  • UE User Equipment
  • example 36 the apparatus of example 35, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with a licensed spectrum of the wireless network.
  • example 37 the apparatus of either of examples 35 or 36, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 38 the apparatus of any of examples 35 through 37, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DO).
  • PDCCH Physical Downlink Control Channel
  • DO Downlink Control Information
  • LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 40 the apparatus of any of examples 35 through 39, wherein the second transmission carries a UL grant.
  • LBT type indicator comprises a Category-4 (Cat-4) LBT priority class.
  • Example 42 the apparatus of example 41, wherein the Cat-4 LBT priority class is based upon one or more Quality-of-Service Class Identifiers (QCI) respectively corresponding with the one or more LCGs.
  • QCI Quality-of-Service Class Identifiers
  • Example 43 provides an Evolved Node B (eNB) device comprising an application processor, a memory, one or more antenna ports, and an interface for allowing the application processor to communicate with another device, the eNB device including the apparatus of any of examples 35 through 42.
  • eNB Evolved Node B
  • Example 44 provides a method comprising: processing, for an Evolved Node-
  • eNB a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and generating a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network.
  • LBT Listen-Before-Talk
  • example 46 the method of either of examples 44 or 45, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 47 the method of any of examples 44 through 46, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DO).
  • PDCCH Physical Downlink Control Channel
  • DO Downlink Control Information
  • LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 49 the method of any of examples 44 through 48, wherein the second transmission carries a UL grant.
  • LBT type indicator comprises a Category-4 (Cat-4) LBT priority class.
  • Example 51 the method of example 50, wherein the Cat-4 LBT priority class is based upon one or more Quality-of-Service Class Identifiers (QCI) respectively corresponding with the one or more LCGs.
  • QCI Quality-of-Service Class Identifiers
  • Example 52 provides machine readable storage media having machine executable instructions stored thereon that, when executed, cause one or more processors to perform a method according to any of examples 44 through 51.
  • Example 53 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: means for processing a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and means for generating a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network.
  • eNB Evolved Node B
  • UE User Equipment
  • example 54 the apparatus of example 53, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with a licensed spectrum of the wireless network.
  • example 55 the apparatus of either of examples 53 or 54, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 56 the apparatus of any of examples 53 through 55, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DO).
  • PDCCH Physical Downlink Control Channel
  • DO Downlink Control Information
  • LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 58 the apparatus of any of examples 53 through 57, wherein the second transmission carries a UL grant.
  • LBT type indicator comprises a Category-4 (Cat-4) LBT priority class.
  • Example 60 the apparatus of example 59, wherein the Cat-4 LBT priority class is based upon one or more Quality-of-Service Class Identifiers (QCI) respectively corresponding with the one or more LCGs.
  • QCI Quality-of-Service Class Identifiers
  • Example 61 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network to perform an operation comprising: process a first transmission carrying an identifier of one or more Logical Channel Groups (LCGs) with data available for Uplink (UL) transmission via a Buffer Status Report (BSR), the first transmission being for a Primary Cell (PCell) of the wireless network; and generate a second transmission carrying a Listen-Before-Talk (LBT) type indicator based upon the one or more LCGs, the second transmission being for a Secondary Cell (SCell) of the wireless network.
  • eNB Evolved Node B
  • UE User Equipment
  • example 62 the machine readable storage media of example 61, wherein the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with a licensed spectrum of the wireless network.
  • example 63 the machine readable storage media of either of examples 61 or
  • the PCell is associated with a licensed spectrum of the wireless network; and wherein the SCell is associated with an unlicensed spectrum of the wireless network.
  • example 64 the machine readable storage media of any of examples 61 through 63, wherein the second transmission carries a Physical Downlink Control Channel (PDCCH) Downlink Control Information (DCI).
  • PDCCH Physical Downlink Control Channel
  • DCI Downlink Control Information
  • example 65 the machine readable storage media of any of examples 61 through 64, wherein the LBT type indicator is carried in a Downlink Control Information (DCI) of the second transmission.
  • DCI Downlink Control Information
  • example 66 the machine readable storage media of any of examples 61 through 65, wherein the second transmission carries a UL grant.
  • example 67 the machine readable storage media of any of examples 61 through 66, wherein the LBT type indicator comprises a Category -4 (Cat-4) LBT priority class.
  • the LBT type indicator comprises a Category -4 (Cat-4) LBT priority class.
  • example 68 the machine readable storage media of example 67, wherein the Cat-4 LBT priority class is based upon one or more Quality-of-Service Class Identifiers (QCI) respectively corresponding with the one or more LCGs.
  • QCI Quality-of-Service Class Identifiers
  • the one or more processors comprise a baseband processor.
  • example 70 the apparatus of any of examples 1 through 8 and 35 through
  • transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing transmissions, or decoding transmissions.
  • transceiver circuitry for generating transmissions and processing transmissions.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un appareil d'un équipement d'utilisateur (UE) conçu pour communiquer avec un nœud B évolué (eNB) sur un réseau sans fil. L'appareil peut comprendre un premier circuit et un second circuit. Le premier circuit peut être conçu pour générer une première transmission comportant un identifiant d'un ou plusieurs groupes de canaux logiques (LCG) avec des données disponibles pour une transmission de liaison montante (UL) par l'intermédiaire d'un rapport de statut de tampon (BSR), la première transmission étant destinée à une cellule primaire (PCell) du réseau sans fil. Le second circuit peut être conçu pour traiter une seconde transmission comportant un indicateur de type accès aléatoire avec écouteuse de porteuse (LBT) en fonction du ou des LCG, la seconde transmission étant destinée à une cellule secondaire (SCell) du réseau sans fil.
PCT/US2017/032461 2016-05-12 2017-05-12 Sélection de classe de priorité destinée à une procédure d'accès à un canal d'accès aléatoire avec écoute de porteuse de liaison montante WO2017197296A1 (fr)

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CN111434063A (zh) * 2017-12-27 2020-07-17 Oppo广东移动通信有限公司 一种信息传输的方法、设备及计算机存储介质
CN111434063B (zh) * 2017-12-27 2023-03-07 Oppo广东移动通信有限公司 一种信息传输的方法、设备及计算机存储介质
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US11083015B2 (en) 2018-02-16 2021-08-03 At&T Intellectual Property I, L.P. Close loop listen before talk for NR operation in unlicensed spectrum
US11653385B2 (en) 2018-02-16 2023-05-16 At&T Intellectual Property I, L.P. Close loop listen before talk for NR operation in unlicensed spectrum
US10834781B2 (en) 2018-09-21 2020-11-10 At&T Intellectual Property I, L.P. Closed loop carrier sense multiple access with multiuser request to send and clear to send handshaking in an advanced wireless network
US11540352B2 (en) 2018-09-21 2022-12-27 At&T Intellectual Property I, L.P. Closed loop carrier sense multiple access with multiuser request to send and clear to send handshaking in an advanced wireless network
CN111163528A (zh) * 2018-11-08 2020-05-15 宏碁股份有限公司 处理通道存取程序的装置及方法
CN113068174A (zh) * 2020-01-02 2021-07-02 苹果公司 非公共无线通信网络

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