WO2017099857A1 - Procédés destinés à la réduction de latence entre l'autorisation de liaison montante et transmission de canal partagé de liaison montante physique - Google Patents

Procédés destinés à la réduction de latence entre l'autorisation de liaison montante et transmission de canal partagé de liaison montante physique Download PDF

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Publication number
WO2017099857A1
WO2017099857A1 PCT/US2016/048479 US2016048479W WO2017099857A1 WO 2017099857 A1 WO2017099857 A1 WO 2017099857A1 US 2016048479 W US2016048479 W US 2016048479W WO 2017099857 A1 WO2017099857 A1 WO 2017099857A1
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WIPO (PCT)
Prior art keywords
transmission
pusch
subframes
subframe
indicator
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PCT/US2016/048479
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English (en)
Inventor
Abhijeet Bhorkar
Hwan-Joon Kwon
Jeongho Jeon
Qiaoyang Ye
Huaning Niu
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Intel IP Corporation
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Publication of WO2017099857A1 publication Critical patent/WO2017099857A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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

  • More recent cellular communication systems include 3rd Generation Partnership Project (3GPP) Universal Mobile Telecommunications System (UMTS) systems, 3GPP Long-Term Evolution (LTE) systems, and 3GPP LTE-Advanced (LTE-A) systems.
  • 3GPP 3rd Generation Partnership Project
  • UMTS Universal Mobile Telecommunications System
  • LTE Long-Term Evolution
  • LTE-A 3GPP LTE-Advanced
  • Next-generation wireless cellular communication systems based upon LTE and LTE-A systems are being developed, such as fifth generation (5G) wireless systems / 5G mobile networks systems.
  • Next-generation wireless cellular communication systems may provide support for higher bandwidths in part by supporting License- Assisted Access to unlicensed spectrum.
  • FIG. 1 illustrates a scenario of Uplink (UL) scheduling in which a Physical
  • Uplink Shared Channel may be transmitted on a fourth subframe following a subframe in which a Physical Downlink Control Channel (PDCCH) scheduling the PUSCH is transmitted, in accordance with some embodiments of the disclosure.
  • Fig. 2 illustrates scenarios of UL scheduling in which a PUSCH may be transmitted on various subframes following a subframe in which a PDCCH scheduling the
  • PUSCH is transmitted, in accordance with some embodiments of the disclosure.
  • Fig. 3 illustrates a scenario of UL scheduling in which a PUSCH may be transmitted a number of symbols following transmission of a PDCCH scheduling the
  • Fig. 4 illustrates scenarios of in-burst and cross-burst flexible-timing UL scheduling in which a UL grant in one subframe may schedule N PUSCH transmissions in N subframes, in accordance with some embodiments of the disclosure.
  • Fig. 5 illustrates scenarios of in-burst and cross-burst flexible-timing UL scheduling in which one or more UL grants in one subframe may schedule N PUSCH transmissions in N subframes, in accordance with some embodiments of the disclosure.
  • Fig. 6 illustrates scenarios of in-burst and cross-burst flexible-timing UL scheduling in which a UL grant in one subframe may schedule a PUSCH transmission in one of N subframes, in accordance with some embodiments of the disclosure.
  • Fig. 7 illustrates an Evolved Node B (eNB) and a User Equipment (UE), in accordance with some embodiments of the disclosure.
  • eNB Evolved Node B
  • UE User Equipment
  • Fig. 8 illustrates hardware processing circuitries for a UE for reduction of latency between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • FIG. 9 illustrates hardware processing circuitries for a UE for flexible timing between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • Fig. 10 illustrates methods for a UE for reduction of latency between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • FIG. 11 illustrates methods for a UE for flexible timing between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • Fig. 12 illustrates example components of a UE device, in accordance with some embodiments of the disclosure.
  • 3GPP 3rd Generation Partnership Project
  • UMTS Universal Mobile Telecommunications System
  • LTE Long-Term Evolution
  • LTE- A 3GPP LTE-Advanced
  • 5G 5th Generation wireless / 5th Generation mobile networks
  • LAA License-Assisted Access
  • 3GPP Release 13 frozen, end date 2016-03-11, SP-71.
  • DL Downlink
  • PUSCH transmission may be based upon an explicit UL grant transmission via Physical Downlink Control Channel (PDCCH), for example via Downlink Control Information (DCI) format 0.
  • PDCCH Physical Downlink Control Channel
  • DCI Downlink Control Information
  • an Evolved Node-B (eNB) may complete a Listen-Before-Talk (LBT) procedure on a component carrier over which PUSCH is expected. If the LBT at the eNB is successful, the eNB may then transmit a UL grant (e.g., via
  • a User Equipment may perform an LBT procedure (e.g., a short LBT, which may span 25 microseconds ( ⁇ ), or a Category-4 LBT) during the allocated time interval. If the LBT at the UE is successful, the UE may then transmit PUSCH as scheduled, on the resources indicated by the UL grant.
  • a UL grant may be sent on another licensed carrier (e.g., via cross-carrier scheduling).
  • an eNB may not be disposed to perform an LBT procedure, but a UE may be disposed to perform a Category-4 LBT procedure before its own transmission.
  • LAA UL throughput performance has been identified as being noticeably degraded.
  • a first reason for the performance degradation may be the "double" performance of LBT procedures for UL transmission, wherein, both eNB and UE perform LBT before transmission of PUSCH.
  • a second reason for the performance degradation may be that the UE may be disposed to being scheduled for UL transmission after a predetermined number of subframes have elapsed, due to constraints on UE processing delays for UL grants. However, that predetermined number of subframes was established at the time of Release 8 LTE standardization, when UEs had more limited processing capability.
  • the predetermined number of subframes may be more restrictive than the actual capabilities of contemporary UE designs, and may prevent more rapid UE responses to UL grants.
  • the processing delays for UL grants may be reduced for future systems (including systems compliant with 3GPP Release 14, or 5G systems).
  • future systems might differentiate between processing delays for control channel transmissions (e.g., PDCCH transmissions) and processing delays for data channel transmissions (e.g., Physical Downlink Shared Channel (PDSCH) transmissions), where PDCCH transmissions may require lesser computation complexity than PDSCH transmissions.
  • PDCCH transmissions e.g., Physical Downlink Shared Channel (PDSCH) transmissions
  • PDSCH Physical Downlink Shared Channel
  • Fig. 1 illustrates a scenario of UL scheduling in which a
  • a scenario 100 may comprise a traffic stream 110 over a plurality of subframes 105 (which may be, for example, 1 millisecond (ms) in duration). Traffic stream 110 may in turn comprise various types of DL and UL traffic.
  • scenario 100 which may correspond to a legacy LTE scheduled-based UL
  • a PDCCH 114 may be transmitted by an eNB in a subframe n of subframes 105.
  • the eNB may transmit an explicit UL grant.
  • a receiving UE may perform an LBT procedure 116.
  • the UE may transmit a PUSCH 118. This 4- subframe delay may exist despite contemporary UE capabilities permitting PUSCH transmission before subframe n+4.
  • the performance degradation of scheduled-based UL LAA design may manifest at both low-load conditions and high-load conditions.
  • Wi-Fi® is a registered trademark of the Wi-Fi Alliance of Austin, Texas, USA.
  • the performance degradation may relate to inefficiency in utilizing the wireless spectrum.
  • an eNB associated with UL only traffic may perform LBT before transmitting a UL grant to schedule a new UL PUSCH transmission.
  • a remainder of the first 4 ms from the transmitted UL grant may remain unutilized due to the 4-subframe processing latency requirement for PDCCH reception at the UE.
  • UL grant transmissions may be disposed to being spaced by 8 ms, this may in turn prevent the use of 50% of the time available between UL grants that might otherwise be used for UL PUSCH (in an alternative, hypothetical embodiment).
  • the performance degradation may relate to a length of a gap between PUSCH scheduling via PDCCH and the subsequent corresponding PUSCH.
  • Wi-Fi® devices or other devices
  • a subsequent LBT performed by a UE may then determine that the channel is not idle, and that the UE may therefore not transmit the scheduled PUSCH.
  • UL LAA transmission probability may be significantly reduced.
  • the performance degradation for the UL transmission may be more severe under conditions of high UL traffic load in comparison with DL traffic, in which the probability that PDSCH transmission is preceded by PUSCH transmission may be relatively low.
  • operation in unlicensed spectrum may include LTE operation via Dual Connectivity (DC) based LAA.
  • operation in unlicensed spectrum may include standalone LTE operation in unlicensed spectrum, in which LTE-based technology may operate in unlicensed spectrum alone and might not require an "anchor.”
  • standalone LTE operation in unlicensed spectrum may comprise MulteFireTM technology defined by the MulteFire Alliance of Fremont California, USA.
  • 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 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.
  • the term “eNB” may refer to a legacy eNB, a next-generation or 5G eNB, an mmWave eNB, an mmWave small cell, an AP, and/or another base station for a wireless communication system.
  • the term “UE” may refer to a UE, a 5G UE, an mmWave UE, an STA, 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
  • Fig. 2 illustrates scenarios of UL scheduling in which a PUSCH may be transmitted on various subframes following a subframe in which a PDCCH scheduling the PUSCH is transmitted, in accordance with some embodiments of the disclosure.
  • a scenario 200 may comprise a traffic stream 210, a traffic stream 220, a traffic stream 230, and/or a traffic stream 240 over a plurality of subframes 205 (which may be, for example, 1 ms in duration).
  • Traffic stream 210, traffic stream 220, traffic stream 230, and traffic stream 240 may in turn comprise various types of DL and UL traffic.
  • traffic stream 210 traffic stream 220, traffic stream 230, and traffic stream
  • a PDCCH 214 may be transmitted by an eNB in a subframe n of subframes 205.
  • the eNB may transmit an explicit UL grant.
  • a receiving UE may perform an LBT procedure 216, then transmit a PUSCH 218 (subject to the success of LBT procedure 216).
  • a PUSCH 228 may follow a PDCCH 224
  • a PUSCH 238 may follow a PDCCH 234 (and UL grant) after n+l subframes, subject to an LBT 236.
  • a PUSCH 248 may follow a PDCCH 244 (and UL grant) in the same subframe, subject to an LBT 246.
  • a corresponding PUSCH may be transmitted thereafter (subject to LBT) at a subframe n+m, where m may be one of zero, one, two, three, or four.
  • m may be one of zero, one, two, three, or four.
  • the PUSCH may be transmitted within the same subframe.
  • the PUSCH may be transmitted within the same subframe if the LBT procedure may be completed within subframe n.
  • the parameter m may have a predetermined value, and the choice of m may depend upon various conditions. In some embodiments, the choice of m may depend upon a UE processing delay, and the value of m may therefore differ from UE to UE. For some embodiments, the choice of m may be dependent upon the presence of a DL PDSCH transmission. For example, m may be set to a higher value if a DL PDSCH transmission is present, even if the UE being served is capable of transmitting PUSCH with a lower value of m. Furthermore, the choice of m for PDCCH processing at a UE might not depend upon a processing delay of PDSCH. Accordingly, a latency between a UL grant and a corresponding PUSCH may be lower than a processing delay required for the PDSCH reception.
  • the choice of m may be determined dynamically or semi-statically.
  • the value of m may be indicated to a UE dynamically and separately for each UE via PDCCH.
  • a UL grant may indicate the value of m in some embodiments.
  • the choice of m may be indicated to a UE semi-statically based upon Layer 2 (L2) signaling and/or Radio Resource Control (RRC) signaling.
  • the choice of m may be indicated dynamically and commonly to a plurality of UEs via broadcast signaling, such as common DCI.
  • the choice of m may be indicated semi-statically and commonly to a plurality of UEs.
  • the choice of m may be indicated via a broadcast System Information Block (SIB) transmission, or by higher-layer signaling.
  • SIB System Information Block
  • FIG. 3 illustrates a scenario of UL scheduling in which a PUSCH may be transmitted a number of symbols following transmission of a PDCCH scheduling the PUSCH, in accordance with some embodiments of the disclosure.
  • a scenario 300 may comprise a traffic stream 310 over a plurality of subframes 305 (which may be, for example, 1 ms in duration). Traffic stream 310 may in turn comprise various types of DL and UL traffic.
  • a PDCCH 314 may be transmitted by an eNB in a subframe n of subframes 305.
  • the eNB may transmit an explicit UL grant.
  • a receiving UE may perform an LBT procedure 316, and subject to LBT procedure 316, the UE may transmit a PUSCH 318.
  • An eNB may indicate a start of PUSCH by indicating an offset k, which may in some embodiments be indicated dynamically.
  • the parameter k may be a number of symbols timing relationship may exist between the transmission of PDCCH 314 and corresponding PUSCH 318. For example, there may be k symbols between symbol 0 of subframe n (e.g., at a time when PDCCH 314 transmission begins) and a symbol at which PUSCH 318 transmission begins. Accordingly, transmission of PUSCH 318 may have a variance vary within a range of times 319.
  • PUSCH transmission may be aligned to a Primary Cell (PCell) subframe boundary, or to a start of a PUSCH
  • PCell Primary Cell
  • one UL grant in a subframe may schedule, for a UE, a set of one or more PUSCH transmissions in a corresponding set of one or more subframes.
  • a plurality of UL grants in one subframe may schedule, for a UE, a plurality of PUSCH transmissions in a corresponding plurality of subframes.
  • one UL grant in a subframe may schedule, for a UE, a PUSCH transmission in one of a plurality of subframes (which may be subject to LBT).
  • a flexible timing relationship may accordingly exist between a UL grant and a scheduled PUSCH transmission.
  • the timing relationship may be subject to a minimum required processing delay (e.g., 4 ms).
  • the timing relationship may be flexible such that both in-burst scheduling and cross-burst scheduling may be possible.
  • multiple types of flexible-timing multi- subframe scheduling may be supported.
  • separate DCI formats may be designed for each type of scheduling.
  • one DCI format may be reused for multiple types of scheduling, since there may be common aspects of signaling associated with various types of scheduling. For example, a timing relationship between a UL grant and a scheduled PUSCH (e.g., first scheduled PUSCH) may be common to multiply types of scheduling.
  • an indicator or field of information may indicate the type of scheduling being used.
  • FIG. 4 illustrates scenarios of in-burst and cross-burst flexible-timing UL scheduling in which a UL grant in one subframe may schedule N PUSCH transmissions in N subframes, in accordance with some embodiments of the disclosure.
  • An in-burst scenario 400 may comprise a traffic burst 410 over a plurality of subframes 411. Traffic burst 410 may comprise various types of DL and UL traffic.
  • an eNB may transmit a
  • the DL transmission 414 (e.g., a PDCCH) in a subframe n which may carry a UL grant.
  • the UL grant may schedule one or more PUSCH transmissions 418 in a respectively corresponding set of one or more subframes, e.g., subframes n+4 through n+6.
  • a UE may transmit the one or more PUSCH 418 corresponding to the UL grant.
  • the UL grant may schedule any number of PUSCH transmissions (for example, between 1 and 7 PUSCH transmissions, for any of subframes n+l through n+7).
  • DL transmission 414 may provide signaling for a variety of indicators.
  • DL transmission 414 may carry a timing relationship indicator, which may specify a timing relationship between the UL grant and the first scheduled subframe corresponding to the one or more UL transmissions (e.g., PUSCH transmissions 418).
  • the first scheduled UL subframe may be indicated by a subframe index within a frame.
  • the first scheduled UL subframe may be indicated by a time difference (e.g., in a number of subframes) between a subframe in which the UL grant is transmitted and the first scheduled UL subframe.
  • a time difference e.g., in a number of subframes
  • 4 bits of information may be used for the timing relationship indicator.
  • the timing relationship indicator may be UE-specific.
  • DL transmission 414 may carry a number-of-subframes indicator, which may specify a number of subframes N scheduled for UL transmission corresponding to the UL grant.
  • the N subframes may be consecutive.
  • the number-of-subframes indicator may span a number of bits [log 2 N max ], where Nmax may be a maximum number of subframes that may be consecutively scheduled.
  • the number-of-subframes indicator may be UE-specific.
  • the ⁇ subframes may be non-consecutive.
  • the number-of-subframes indicator may be a bitmap.
  • a number-of-subframes bitmap may span 10 bits, each bit of which may correspond to a subframe index within a frame.
  • a number-of- subframes bitmap may span less than 10 bits, each bit of which may correspond to a subframe offset relative to a first scheduled UL subframe.
  • a first bit of a number-of-subframes bitmap may correspond to a subframe next to the first scheduled UL subframe.
  • the number-of-subframes bitmap may be UE-specific.
  • scheduling for multiple future subframes may be based on the same Channel State Information (CSI) that was available when the scheduling decision was made, and a Modulation and Coding Scheme (MCS) and/or a precoding may be identically applied to multiple scheduled subframes.
  • MCS Modulation and Coding Scheme
  • HARQ Hybrid Automatic Repeat Request
  • RV Redundancy Version
  • RB Resource Block assignment
  • a cross-burst scenario 450 may comprise both a traffic burst 460 over a plurality of subframes 461 and a traffic burst 470 over a plurality of subframes 471.
  • Traffic burst 460 and traffic burst 470 may comprise various types of DL and UL traffic.
  • an eNB may transmit a traffic burst 460, subject to an LBT procedure 462, an eNB may transmit a
  • the DL transmission 464 (e.g., a PDCCH) in a subframe n which may carry a UL grant.
  • the UL grant may schedule one or more PUSCH transmissions 478 in a respectively corresponding set of one or more subframes.
  • the respectively corresponding set of one or more subframes of cross-burst scenario 450 may be in a burst corresponding to a transmission other than the UL grant.
  • the set of subframes may be subframes p+l through p+3 in traffic burst 470.
  • a UE may transmit the one or more PUSCH 478 respectively corresponding to the UL grant.
  • the UL grant may schedule any number of PUSCH transmissions (for example, between 1 and 7 PUSCH transmissions, for any of subframes p+l through p+l).
  • a timing relationship indicator may specify a timing relationship between a start of the scheduled transmission burst and the first scheduled UL subframe.
  • the first scheduled UL subframe may be indicated by a number of subframes from a start of the burst to the first scheduled UL subframe.
  • the first scheduled subframe may be indicated by a number of subframes from a start of UL transmission within the burst to the first scheduled UL subframe.
  • the timing relationship indicator may be UE specific.
  • FIG. 5 illustrates scenarios of in-burst and cross-burst flexible-timing UL scheduling in which one or more UL grants in one subframe may schedule N PUSCH transmissions in N subframes, in accordance with some embodiments of the disclosure.
  • An in-burst scenario 500 may comprise a traffic burst 510 over a plurality of subframes 511. Traffic burst 510 may comprise various types of DL and UL traffic.
  • an eNB may transmit one or more DL transmissions 514 (e.g., PDCCH) in a subframe n which may carry one or more respectively corresponding UL grants.
  • the UL grants may schedule one or more respectively corresponding PUSCH transmissions 518 in a respectively corresponding set of one or more subframes, e.g., subframes n+4 through n+6.
  • a UE may transmit the one or more PUSCH transmissions 418 respectively corresponding to the one or more UL grants.
  • the UL grant may schedule any number of PUSCH transmissions (for example, between 1 and 7 PUSCH transmissions, for any of subframes n+l through n+7).
  • DL transmissions 514 may provide signaling for a variety of indicators.
  • the one or more DL transmissions 514 may carry one or more respectively corresponding timing relationship indicators, which may in turn specify timing relationships between the one or more UL grants and one or more scheduled subframes corresponding to the one or more UL transmissions (e.g., PUSCH transmissions 518).
  • the one or more scheduled UL subframes may be indicated by subframe indices with in a frame.
  • the one or more scheduled UL subframes may be indicated by time differences (in, e.g., a number of subframes) between a subframe in which the UL grant is transmitted and the scheduled subframe.
  • 4 bits of information may be used for the timing relationship indicators.
  • a cross-burst scenario 550 may comprise both a traffic burst 560 over a plurality of subframes 561 and a traffic burst 570 over a plurality of subframes 571.
  • Traffic burst 560 and traffic burst 570 may comprise various types of DL and UL traffic.
  • an eNB may transmit one or more DL transmissions 564 (e.g., PDCCH) in a subframe n which may carry one or more respectively corresponding UL grants.
  • the UL grants may schedule one or more respectively corresponding PUSCH transmissions 578 in a respectively corresponding set of one or more subframes.
  • the respectively corresponding set of one or more subframes of cross-burst scenario 500 may be in a burst corresponding to transmissions other than the UL grants. As depicted in Fig.
  • the set of subframes may be subframes p+l through p+3 in a traffic burst 570 extending over subframes 571.
  • a UE may transmit the one or more PUSCH 578 respectively corresponding to the one or more UL grants.
  • any number of UL grants may schedule any number of PUSCH transmissions (for example, between 1 and 7 PUSCH transmissions, for any of subframes p+l through p+l).
  • timing relationship indicators may specify timing relationships between a start of the scheduled transmission burst and scheduled UL subframes.
  • the scheduled UL subframes may be indicated by a number of subframes from a start of the burst to the scheduled subframes.
  • the timing relationship indicator may be UE specific.
  • FIG. 6 illustrates scenarios of in-burst and cross-burst flexible-timing UL scheduling in which a UL grant in one subframe may schedule a PUSCH transmission in one of N subframes, in accordance with some embodiments of the disclosure.
  • An in-burst scenario 600 may comprise a traffic burst 610 over a plurality of subframes 611. Traffic burst 610 may comprise various types of DL and UL traffic.
  • an eNB may transmit a
  • DL transmission 614 (e.g., a PDCCH transmission) in a subframe n which may carry a corresponding UL grant.
  • the UL grant may schedule a corresponding PUSCH transmission 618 in a corresponding valid time window 619 encompassing one or more subframes, e.g., subframes n+4 through n+6.
  • a UE may transmit the PUSCH transmission 618 corresponding to the UL grant within valid time window 619.
  • valid time window 619 may extend over any range of subframes (for example, any portion of subframes n+l through n+l).
  • DL transmission 614 may provide signaling for a variety of indicators.
  • DL transmission 614 may carry a timing relationship indicator, which may specify a timing relationship between the UL grant and the first subframe of the valid time window (e.g., the first subframe in which the corresponding UL transmission may be validly transmitted).
  • the first subframe of the valid time window may be indicated by a subframe index within a frame.
  • the first subframe of the valid time window may be indicated by a time difference (in, e.g., a number of subframes) between a subframe in which the UL grant is transmitted and the first subframe of the valid time window.
  • the first subframe of the valid time window may be indicated by a number of subframes from a start of UL transmissions within the burst to the first subframe of the valid time window.
  • 4 bits of information may be used for the timing relationship indicator.
  • the timing relationship indicator may be UE-specific.
  • DL transmission 614 may carry a time window duration indicator, which may specify a number of subframes over which the valid time window extends (e.g., a duration of valid time window 619).
  • the time window duration indicator may specify a time difference (e.g., in a number of subframes) between the first subframe and the last subframe of the valid time window.
  • the time window duration indicator may a span number of bits [log 2 N max ], where Nmax may be a maximum number of subframes that may be consecutively scheduled.
  • the time window duration indicator may be UE-specific.
  • a cross-burst scenario 650 may comprise both a traffic burst 660 over a plurality of subframes 661 and a traffic burst 670 over a plurality of subframes 671.
  • Traffic burst 660 and traffic burst 670 may comprise various types of DL and UL traffic.
  • an eNB may transmit a
  • the DL transmission 664 (e.g., a PDCCH) in a subframe n which may carry a UL grant.
  • the UL grant may schedule a corresponding PUSCH transmission 678 in a corresponding valid time window 679 encompassing one or more subframes.
  • the corresponding set of one or more subframes of cross-burst scenario 650 may be in a burst corresponding to a transmission other than the UL grant.
  • the one or more subframes that valid time window 679 encompasses may be e.g., subframes p+l through p+3.
  • time window 679 may encompass various numbers of subframes (for example, any range of subframes p+l through p+l).
  • a timing relationship indicator may specify a timing relationship between a start of the scheduled transmission burst and the first subframe of the valid time window.
  • the first subframe of the valid time window may be indicated by a number of subframes from a start of the burst to a first subframe of the valid time window.
  • the timing relationship indicator may be UE specific.
  • Fig. 7 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure.
  • Fig. 7 includes block diagrams of an eNB 710 and a UE 730 which are operable to co-exist with each other and other elements of an LTE network. High-level, simplified architectures of eNB 710 and UE 730 are described so as not to obscure the embodiments. It should be noted that in some embodiments, eNB 710 may be a stationary non-mobile device.
  • eNB 710 is coupled to one or more antennas 705, and UE 730 is similarly coupled to one or more antennas 725.
  • eNB 710 may incorporate or comprise antennas 705, and UE 730 in various embodiments may incorporate or comprise antennas 725.
  • antennas 705 and/or antennas 725 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 705 are separated to take advantage of spatial diversity.
  • eNB 710 and UE 730 are operable to communicate with each other on a network, such as a wireless network.
  • eNB 710 and UE 730 may be in communication with each other over a wireless communication channel 750, which has both a downlink path from eNB 710 to UE 730 and an uplink path from UE 730 to eNB 710.
  • eNB 710 may include a physical layer circuitry 712, a MAC (media access control) circuitry 714, a processor 716, a memory 718, and a hardware processing circuitry 720.
  • MAC media access control
  • physical layer circuitry 712 includes a transceiver 713 for providing signals to and from UE 730.
  • Transceiver 713 provides signals to and from UEs or other devices using one or more antennas 705.
  • MAC circuitry 714 controls access to the wireless medium.
  • Memory 718 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 720 may comprise logic devices or circuitry to perform various operations.
  • processor 716 and memory 718 are arranged to perform the operations of hardware processing circuitry 720, such as operations described herein with reference to logic devices and circuitry within eNB 710 and/or hardware processing circuitry 720.
  • eNB 710 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 730 may include a physical layer circuitry 732, a MAC circuitry 734, a processor 736, a memory 738, a hardware processing circuitry 740, a wireless interface 742, and a display 744.
  • a physical layer circuitry 732 may include a physical layer circuitry 732, a MAC circuitry 734, a processor 736, a memory 738, a hardware processing circuitry 740, a wireless interface 742, and a display 744.
  • a person skilled in the art would appreciate that other components not shown may be used in addition to the components shown to form a complete UE.
  • physical layer circuitry 732 includes a transceiver 733 for providing signals to and from eNB 710 (as well as other eNBs). Transceiver 733 provides signals to and from eNBs or other devices using one or more antennas 725.
  • MAC circuitry 734 controls access to the wireless medium.
  • Memory 738 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 742 may be arranged to allow the processor to communicate with another device.
  • Display 744 may provide a visual and/or tactile display for a user to interact with UE 730, such as a touch-screen display.
  • Hardware processing circuitry 740 may comprise logic devices or circuitry to perform various operations.
  • processor 736 and memory 738 may be arranged to perform the operations of hardware processing circuitry 740, such as operations described herein with reference to logic devices and circuitry within UE 730 and/or hardware processing circuitry 740.
  • UE 730 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. 7, and elements of other figures having the same names or reference numbers can operate or function in the manner described herein with respect to any such figures (although the operation and function of such elements is not limited to such descriptions).
  • Figs. 8, 9, and 12 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. 7 and Figs. 8, 9, and 12 can operate or function in the manner described herein with respect to any of the figures.
  • eNB 710 and UE 730 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
  • Fig. 8 illustrates hardware processing circuitries for a UE for reduction of latency between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • Fig. 9 illustrates hardware processing circuitries for a UE for flexible timing between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • a UE may include various hardware processing circuitries discussed below (such as hardware processing circuitry 800 of Fig. 8 and hardware processing circuitry 900 of Fig. 9), which may in turn comprise logic devices and/or circuitry operable to perform various operations.
  • UE 730 (or various elements or components therein, such as hardware processing circuitry 740, 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 736 and/or one or more other processors which UE 730 may comprise
  • memory 738 and/or other elements or components of UE 730 (which may include hardware processing circuitry 740) 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 736 (and/or one or more other processors which UE 730 may comprise) may be a baseband processor.
  • an apparatus of UE 730 (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 800.
  • hardware processing circuitry 800 may comprise one or more antenna ports 805 operable to provide various transmissions over a wireless communication channel (such as wireless
  • Antenna ports 805 may be coupled to one or more antennas 807 (which may be antennas 725).
  • hardware processing circuitry 800 may incorporate antennas 807, while in other embodiments, hardware processing circuitry 800 may merely be coupled to antennas 807.
  • Antenna ports 805 and antennas 807 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 805 and antennas 807 may be operable to provide transmissions from UE 730 to wireless communication channel 750 (and from there to eNB 710, or to another eNB).
  • antennas 807 and antenna ports 805 may be operable to provide transmissions from a wireless communication channel 750 (and beyond that, from eNB 710, or another eNB) to UE 730.
  • hardware processing circuitry 800 may comprise a first circuitry 810, a second circuitry 820, a third circuitry 830, and a fourth circuitry 840.
  • First circuitry 810 may be operable to decode a DL transmission carrying a UL grant, the DL transmission having been transmitted at a subframe N.
  • Second circuitry 820 may be operable to encode a UL transmission carrying a PUSCH, the UL transmission corresponding to the UL grant.
  • First circuitry 810 may provide an indicator of UL grant to third circuitry 830 via an interface 815.
  • Third circuitry 830 may be operable to select an offset M from one of: 0 subframes, 1 subframe, 2 subframes, 3 subframes, or 4 subframes.
  • Fourth circuitry 840 may be operable to initiate transmission of the UL transmission, subject to a LBT protocol, at a subframe N+M.
  • Third circuitry 830 may be operable to provide offset M to fourth circuitry 840 via an interface 835, and fourth circuitry 840 may be operable to indicate initiation of the transmission to second circuitry 820 via an interface 845.
  • the offset M may be based upon a UE processing delay.
  • the offset M may be based upon a UE processing delay, and may be increased when the DL transmission also carries PDSCH.
  • a DCI carried by the DL transmission may carry a DCI-based offset indicator, and the offset M may be selected to reflect the DCI-based offset indicator.
  • a DCI carried by the DL transmission may carry a DCI-based offset indicator in a common search space of the DCI. The offset M may be selected to reflect the DCI-based offset indicator.
  • first circuitry 810 may be operable to process a higher-layer indication transmission carrying higher-layer-based offset indicator.
  • the higher- layer indication transmission may be selected from at least one of: a Layer 2 signaling transmission, or an RRC transmission.
  • the offset M may be selected to reflect the higher- layer-based offset indicator.
  • first circuitry 810 may be operable to process a SIB transmission carrying a SIB-based offset indicator.
  • the offset M may be selected to reflect the SIB-based offset indicator
  • first circuitry 810 second circuitry 820, third circuitry
  • first circuitry 810, second circuitry 820, third circuitry 830, and fourth circuitry 840 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • an apparatus of UE 730 (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 900.
  • hardware processing circuitry 900 may comprise one or more antenna ports 905 operable to provide various transmissions over a wireless communication channel (such as wireless
  • Antenna ports 905 may be coupled to one or more antennas 907 (which may be antennas 725).
  • antennas 907 which may be antennas 725.
  • hardware processing circuitry 900 may incorporate antennas 907, while in other embodiments, hardware processing circuitry 900 may merely be coupled to antennas 907.
  • Antenna ports 905 and antennas 907 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 905 and antennas 907 may be operable to provide transmissions from UE 730 to wireless communication channel 750 (and from there to eNB 710, or to another eNB).
  • antennas 907 and antenna ports 905 may be operable to provide transmissions from a wireless communication channel 750 (and beyond that, from eNB 710, or another eNB) to UE 730.
  • hardware processing circuitry 900 may comprise a first circuitry 910, a second circuitry 920, and a third circuitry 930.
  • a UL grant in one subframe may schedule, for a UE, a set of one or more PUSCH transmissions in a corresponding set of one or more subframes.
  • First circuitry 910 may be operable to decode a DL transmission carrying a UL grant and a timing relationship indicator.
  • Second circuitry 920 may be operable to encode a plurality of PUSCH corresponding to the UL grant and the timing relationship indicator.
  • Third circuitry 930 may be operable to initiate transmission of the plurality of PUSCH, subject to a LBT protocol, over a respectively corresponding plurality of subframes as specified by the timing relationship indicator.
  • First circuitry 910 may provide an indicator of the UL grant to third circuitry 930 via an interface 915, and third circuitry 930 may provide an indicator that the plurality of PUSCH may be initiated to second circuitry 920 via an interface 935.
  • the timing relationship indicator may specify a subframe index within a frame for transmission of the first PUSCH of the plurality of PUSCH.
  • the DL transmission has been transmitted at a subframe N, and the timing relationship indicator specifies a time difference between subframe N and a subframe for transmission of the first PUSCH of the plurality of PUSCH.
  • the transmission of the plurality of PUSCH may be over a plurality of consecutive subframes.
  • the transmission of the plurality of PUSCH may be over a plurality of subframes indicated by a bitmap.
  • the DL transmission may be transmitted in a first burst, and the DL
  • transmission may specify a starting subframe in a second burst subsequent to the first burst.
  • an MCS and a precoding may be identically applied to the plurality of subframes carrying the plurality of PUSCH.
  • a plurality of UL grants in one subframe may schedule, for a UE, a plurality of PUSCH transmissions in a corresponding plurality of subframes.
  • First circuitry 910 may be operable to decode a DL transmission carrying a plurality of UL grants and a plurality of timing relationship indicators.
  • Second circuitry 920 may be operable to encode a plurality of PUSCH corresponding respectively to the plurality of UL grants and corresponding respectively to the plurality of timing relationship indicators.
  • Third circuitry 930 may be operable to initiate transmission of the plurality of PUSCH, subject to a LBT protocol, over a respectively corresponding plurality of subframes specified by the plurality of timing relationship indicators.
  • First circuitry 910 may provide an indicator of the plurality of UL grants to third circuitry 930 via an interface 915, and third circuitry 930 may provide an indicator that the plurality of PUSCH may be initiated to second circuitry 920 via an interface 935.
  • the plurality of timing relationship indicators may specify a plurality of respectively corresponding subframe indices within a frame for transmission of the plurality of PUSCH.
  • the DL transmission may have been transmitted at a subframe N, and the plurality of timing relationship indicators may specify a plurality of respectively corresponding time differences between subframe N and a plurality of subframes for transmission of the plurality of PUSCH.
  • the DL transmission may be transmitted in a first burst, and the DL transmission may specify a plurality of subframes in a second burst subsequent to the first burst.
  • UL grant in one subframe may schedule, for a UE, a PUSCH transmission in one of a plurality of subframes (which may be subject to LBT).
  • First circuitry 910 may decode a DL transmission carrying a UL grant and a timing relationship indicator.
  • Second circuitry 920 may encode a PUSCH corresponding to the UL grant and the timing relationship indicator.
  • Third circuitry 930 may initiate transmission of the PUSCH, subject to an LBT protocol, in one of a plurality of subframes specified by the timing relationship indicator.
  • First circuitry 910 may provide an indicator of the UL grant to third circuitry 930 via an interface 915, and third circuitry 930 may provide an indicator that PUSCH may be initiated to second circuitry 920 via an interface 935.
  • the timing relationship indicator may specify a subframe index for a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the DL transmission may have been transmitted at a subframe N, and the timing relationship indicator may specify a time difference between subframe N and first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the DL transmission may be transmitted in a first burst, and the DL transmission may specify a starting subframe of a second burst subsequent to the first burst, the starting subframe being a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the timing relationship indicator may additionally specify a number of subframes over which the UL grant for transmission of the PUSCH is valid.
  • first circuitry 910, second circuitry 920, and third circuitry 930 may be implemented as separate circuitries. In other embodiments, one or more of first circuitry 910, second circuitry 920, and third circuitry 930 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • Fig. 10 illustrates methods for a UE for reduction of latency between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • Fig. 11 illustrates methods for a UE for flexible timing between UL grants and subsequent PUSCH transmissions, in accordance with some embodiments of the disclosure.
  • methods that may relate to UE 730 and hardware processing circuitry 740 are discussed below.
  • the actions in the flowcharts 1000 and 1100 of Figs. 10 and 11 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.
  • machine readable storage media may have executable instructions that, when executed, cause UE 730 and/or hardware processing circuitry 740 to perform an operation comprising the methods of Figs. 10 and 11.
  • 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.
  • 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
  • any other tangible storage media or non-transitory storage media e.g., hard disk drives, solid-state disk drives, or flash-memory-based storage media
  • an apparatus may comprise means for performing various actions and/or operations of the methods of Figs. 10 and 11.
  • a method 1000 may comprise a decoding 1010, an encoding 1015, a selecting 1020, an initiating 1025, a processing 1030, and/or a processing 1040.
  • decoding 1010 a DL transmission carrying a UL grant may be decoded , the DL transmission having been transmitted at a subframe N.
  • encoding 1015 a UL transmission carrying a PUSCH may be encoded, the UL transmission corresponding to the UL grant.
  • an offset M may be selected from one of: 0 subframes, 1 subframe, 2 subframes, 3 subframes, or 4 subframes.
  • transmission of the UL transmission may be initiated, subject to an LBT protocol, at a subframe N+M.
  • the offset M may be based upon a UE processing delay.
  • the offset M may be based upon a UE processing delay, and may be increased when the DL transmission also carries PDSCH.
  • a DCI carried by the DL transmission may carry a DCI-based offset indicator, and the offset M may be selected to reflect the DCI-based offset indicator.
  • a DCI carried by the DL transmission may carry a DCI-based offset indicator in a common search space of the DCI, and the offset M may be selected to reflect the DCI-based offset indicator.
  • a higher-layer indication transmission carrying higher-layer-based offset indicator may be processed, the higher-layer indication transmission being selected from at least one of: a Layer 2 signaling transmission, or an RRC transmission.
  • the offset M may be selected to reflect the higher-layer-based offset indicator.
  • an SIB transmission carrying a SIB-based offset indicator may be processed.
  • the offset M may be selected to reflect the SIB-based offset indicator.
  • method 1100 may comprise a decoding 1110, an encoding 1115, and an initiating 1120.
  • decoding 1110 a DL transmission carrying a UL grant and a timing relationship indicator may be decoded.
  • encoding 1115 a plurality of PUSCH corresponding to the UL grant and the timing relationship indicator may be encoded.
  • initiating 1120 transmission of the plurality of PUSCH may be initiated, subject to an LBT protocol, over a respectively corresponding plurality of subframes as specified by the timing relationship indicator.
  • the timing relationship indicator may specify a subframe index within a frame for transmission of the first PUSCH of the plurality of PUSCH.
  • the DL transmission may have been transmitted at a subframe N, and the timing relationship indicator may specify a time difference between subframe N and a subframe for transmission of the first PUSCH of the plurality of PUSCH.
  • the transmission of the plurality of PUSCH may be over a plurality of consecutive subframes. In some embodiments, the transmission of the plurality of PUSCH may be over a plurality of subframes indicated by a bitmap.
  • the DL transmission may be transmitted in a first burst, and the DL transmission may specify a starting subframe in a second burst subsequent to the first burst.
  • an MCS and a precoding may be identically applied to the plurality of subframes carrying the plurality of PUSCH.
  • method 1100 may comprise a decoding 1130, an encoding 1135, and an initiating 1140.
  • decoding 1130 a DL transmission carrying a plurality of UL grants and a plurality of timing relationship indicators may be decoded.
  • encoding 1135 a plurality of PUSCH corresponding respectively to the plurality of UL grants and corresponding respectively to the plurality of timing relationship indicators may be encoded.
  • initiating 1140 transmission of the plurality of PUSCH may be initiated, subject to a LBT protocol, over a respectively corresponding plurality of subframes specified by the plurality of timing relationship indicators.
  • the plurality of timing relationship indicators may specify a plurality of respectively corresponding subframe indices within a frame for transmission of the plurality of PUSCH.
  • the DL transmission may have been transmitted at a subframe N, and the plurality of timing relationship indicators may specify a plurality of respectively corresponding time differences between subframe N and a plurality of subframes for transmission of the plurality of PUSCH.
  • the DL transmission may be transmitted in a first burst, and the DL transmission may specify a plurality of subframes in a second burst subsequent to the first burst.
  • method 1100 may comprise a decoding 1150, an encoding 1155, and an initiating 1160.
  • decoding 1150 a DL transmission carrying a UL grant and a timing relationship indicator may be decoded.
  • encoding 1155 a PUSCH corresponding to the UL grant and the timing relationship indicator may be encoded.
  • initiating 1160 transmission of the PUSCH may be initiated, subject to an LBT protocol, in one of a plurality of subframes specified by the timing relationship indicator.
  • the timing relationship indicator may specify a subframe index for a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the DL transmission may have been transmitted at a subframe N, and the timing relationship indicator may specify a time difference between subframe N and first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the DL transmission may have been transmitted at a subframe N, and the timing relationship indicator may specify a time difference between subframe N and first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the DL transmission may have been transmitted at a subframe N, and the timing relationship indicator may specify a time difference between subframe N and first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the DL transmission may have been transmitted at a subframe N, and the timing relationship indicator may specify a time difference between
  • the transmission may be transmitted in a first burst, and the DL transmission may specify a starting subframe of a second burst subsequent to the first burst, the starting subframe being a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the timing relationship indicator may additionally specify a number of subframes over which the UL grant for transmission of the PUSCH is valid.
  • Fig. 12 illustrates example components of a UE device 1200, in accordance with some embodiments of the disclosure.
  • the UE device 1200 may include application circuitry 1202, baseband circuitry 1204, Radio Frequency (RF) circuitry 1206, front-end module (FEM) circuitry 1208, a low-power wake-up receiver (LP-WUR), and one or more antennas 1210, coupled together at least as shown.
  • RF Radio Frequency
  • FEM front-end module
  • LP-WUR low-power wake-up receiver
  • the UE device 1200 may include additional elements such as, for example, memory /storage, display, camera, sensor, and/or input/output (I/O) interface.
  • I/O input/output
  • the application circuitry 1202 may include one or more application processors.
  • the application circuitry 1202 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 1204 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the baseband circuitry 1204 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 1206 and to generate baseband signals for a transmit signal path of the RF circuitry 1206.
  • Baseband processing circuity 1204 may interface with the application circuitry 1202 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 1206.
  • the baseband circuitry 1204 may include a second generation (2G) baseband processor 1204A, third generation (3G) baseband processor 1204B, fourth generation (4G) baseband processor 1204C, and/or other baseband processor(s) 1204D for other existing generations, generations in development or to be developed in the future (e.g., fifth generation (5G), 6G, etc.).
  • the baseband circuitry 1204 e.g., one or more of baseband processors 1204A-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 1204 may include Fast-Fourier Transform (FFT), precoding, and/or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • encoding/decoding circuitry of the baseband circuitry 1204 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 1204 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) 1204E of the baseband circuitry 1204 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) 1204F.
  • the audio DSP(s) 1204F 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 1204 and the application circuitry 1202 may be implemented together such as, for example, on a system on a chip (SOC).
  • SOC system on a chip
  • the baseband circuitry 1204 may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry 1204 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 1204 is configured to support radio communications of more than one wireless protocol.
  • RF circuitry 1206 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry 1206 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • RF circuitry 1206 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 1208 and provide baseband signals to the baseband circuitry 1204.
  • RF circuitry 1206 may also include a transmit signal path which may include circuitry to up- convert baseband signals provided by the baseband circuitry 1204 and provide RF output signals to the FEM circuitry 1208 for transmission.
  • the RF circuitry 1206 may include a receive signal path and a transmit signal path.
  • the receive signal path of the RF circuitry 1206 may include mixer circuitry 1206 A, amplifier circuitry 1206B and filter circuitry 1206C.
  • the transmit signal path of the RF circuitry 1206 may include filter circuitry 1206C and mixer circuitry 1206 A.
  • RF circuitry 1206 may also include synthesizer circuitry 1206D for synthesizing a frequency for use by the mixer circuitry 1206A of the receive signal path and the transmit signal path.
  • the mixer circuitry 1206 A of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 1208 based on the synthesized frequency provided by synthesizer circuitry 1206D.
  • the amplifier circuitry 1206B may be configured to amplify the down-converted signals and the filter circuitry 1206C 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 1204 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 1206A of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1206A of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 1206D to generate RF output signals for the FEM circuitry 1208.
  • the baseband signals may be provided by the baseband circuitry 1204 and may be filtered by filter circuitry 1206C.
  • the filter circuitry 1206C may include a low-pass filter (LPF), although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1206A of the receive signal path and the mixer circuitry 1206A 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 1206A of the receive signal path and the mixer circuitry 1206 A 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 1206 A of the receive signal path and the mixer circuitry 1206 A may be arranged for direct down-conversion and/or direct up-conversion, respectively.
  • the mixer circuitry 1206 A of the receive signal path and the mixer circuitry 1206A 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 1206 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 1204 may include a digital baseband interface to communicate with the RF circuitry 1206.
  • 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 1206D 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 1206D may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 1206D may be configured to synthesize an output frequency for use by the mixer circuitry 1206 A of the RF circuitry 1206 based on a frequency input and a divider control input.
  • the synthesizer circuitry 1206D 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 1204 or the applications processor 1202 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 1202.
  • Synthesizer circuitry 1206D of the RF circuitry 1206 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 1206D 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 1206 may include an IQ/polar converter.
  • FEM circuitry 1208 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 1210, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 1206 for further processing.
  • FEM circuitry 1208 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 1206 for transmission by one or more of the one or more antennas 1210.
  • the FEM circuitry 1208 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 1206).
  • LNA low-noise amplifier
  • the transmit signal path of the FEM circuitry 1208 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 1206), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 1210.
  • PA power amplifier
  • the UE 1200 comprises a plurality of power saving mechanisms. If the UE 1200 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
  • the 1200 may transition off to an RRC Idle state, where it disconnects from the network and does not perform operations such as channel quality feedback, handover, etc.
  • the UE 1200 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 may include components substantially similar to one or more of the example components of UE device 1200 described herein.
  • DRAM Dynamic RAM
  • Example 1 provides a User Equipment (UE) operable to communicate with an UE
  • Evolved Node B on a wireless network, comprising: one or more processors to: decode a Downlink (DL) transmission carrying an Uplink (UL) grant, the DL transmission having been transmitted at a subframe N; encode an Uplink (UL) transmission carrying a Physical Uplink Shared Channel (PUSCH), the UL transmission corresponding to the UL grant; select an offset M from one of: 0 subframes, 1 subframe, 2 subframes, 3 subframes, or 4 subframes; and initiate transmission of the UL transmission, subject to a Listen-Before- Talk (LBT) protocol, at a subframe N+M.
  • LBT Listen-Before- Talk
  • example 2 the apparatus of example 1, wherein the offset M is based upon a UE processing delay.
  • example 3 the apparatus of either of examples 1 or 2, wherein the offset M is based upon a UE processing delay, and is increased when the DL transmission also carries Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 4 the apparatus of any of examples 1 through 3, wherein a
  • Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator in a common search space of the DCI, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • example 6 the apparatus of any of examples 1 through 5, wherein the one or more processors are further to: process a higher-layer indication transmission carrying higher-layer-based offset indicator, the higher-layer indication transmission being selected from at least one of: a Layer 2 signaling transmission, or a Radio Resource Control (RRC) transmission, wherein the offset M is selected to reflect the higher-layer-based offset indicator.
  • RRC Radio Resource Control
  • example 7 the apparatus of any of examples 1 through 6, wherein the one or more processors are further to: process a System Information Block (SIB) transmission carrying a SIB-based offset indicator, wherein the offset M is selected to reflect the SIB- based offset indicator.
  • SIB System Information Block
  • Example 8 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 7.
  • Example 9 provides a method comprising: decoding, for a User Equipment
  • UE Downlink
  • DL Downlink
  • UL Uplink
  • PUSCH Physical Uplink Shared Channel
  • example 11 the method of either of examples 9 or 10, wherein the offset M is based upon a UE processing delay, and is increased when the DL transmission also carries Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator in a common search space of the DCI, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • example 14 the method of any of examples 9 through 13, comprising: processing a higher-layer indication transmission carrying higher-layer-based offset indicator, the higher-layer indication transmission being selected from at least one of: a Layer 2 signaling transmission, or a Radio Resource Control (RRC) transmission, wherein the offset M is selected to reflect the higher-layer-based offset indicator.
  • RRC Radio Resource Control
  • example 15 the method of any of examples 9 through 14, the operation comprising: processing a System Information Block (SIB) transmission carrying a SIB-based offset indicator, wherein the offset M is selected to reflect the SIB-based offset indicator.
  • SIB System Information Block
  • Example 16 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 any of examples 9 through 15.
  • Example 17 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: means for decoding a Downlink (DL) transmission carrying an Uplink (UL) grant, the DL transmission having been transmitted at a subframe N; means for encoding an Uplink (UL) transmission carrying a Physical Uplink Shared Channel (PUSCH), the UL transmission corresponding to the UL grant; means for selecting an offset M from one of: 0 subframes, 1 subframe, 2 subframes, 3 subframes, or 4 subframes; and means for initiating transmission of the UL transmission, subject to a Listen-Bef ore-Talk (LBT) protocol, at a subframe N+M.
  • LBT Listen-Bef ore-Talk
  • example 18 the apparatus of example 17, wherein the offset M is based upon a UE processing delay.
  • M is based upon a UE processing delay, and is increased when the DL transmission also carries Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator in a common search space of the DCI, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • example 22 the apparatus of any of examples 17 through 21, comprising: means for processing a higher-layer indication transmission carrying higher-layer-based offset indicator, the higher-layer indication transmission being selected from at least one of: a Layer 2 signaling transmission, or a Radio Resource Control (RRC) transmission, wherein the offset M is selected to reflect the higher-layer-based offset indicator.
  • RRC Radio Resource Control
  • example 23 the apparatus of any of examples 17 through 22, the operation comprising: means for processing a System Information Block (SIB) transmission carrying a SIB-based offset indicator, wherein the offset M is selected to reflect the SIB-based offset indicator.
  • SIB System Information Block
  • Example 24 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User
  • UE Equipment to perform an operation comprising: decode a Downlink (DL) transmission carrying an Uplink (UL) grant, the DL transmission having been transmitted at a subframe N; encode an Uplink (UL) transmission carrying a Physical Uplink Shared Channel (PUSCH), the UL transmission corresponding to the UL grant; select an offset M from one of: 0 subframes, 1 subframe, 2 subframes, 3 subframes, or 4 subframes; and initiate transmission of the UL transmission, subject to a Listen-Bef ore-Talk (LBT) protocol, at a subframe N+M.
  • LBT Listen-Bef ore-Talk
  • the offset M is based upon a UE processing delay, and is increased when the DL transmission also carries Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 27 the machine readable storage media of any of examples 24 through 26, wherein a Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • example 28 the machine readable storage media of any of examples 24 through 27, wherein a Downlink Control Information (DCI) carried by the DL transmission carries a DCI-based offset indicator in a common search space of the DCI, and the offset M is selected to reflect the DCI-based offset indicator.
  • DCI Downlink Control Information
  • RRC Radio Resource Control
  • example 30 the machine readable storage media of any of examples 24 through 29, the operation comprising: process a System Information Block (SIB)
  • SIB System Information Block
  • Example 31 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: one or more processors to: decode a Downlink (DL) transmission carrying an Uplink (UL) grant and a timing relationship indicator; encode a plurality of Physical Uplink Shared Channels (PUSCH) corresponding to the UL grant and the timing relationship indicator; and initiate transmission of the plurality of PUSCH, subject to a Listen-Before-Talk (LBT) protocol, over a respectively corresponding plurality of subframes as specified by the timing relationship indicator.
  • UE User Equipment
  • eNB Evolved Node B
  • LBT Listen-Before-Talk
  • the apparatus of example 31 wherein the timing relationship indicator specifies a subframe index within a frame for transmission of the first PUSCH of the plurality of PUSCH.
  • the timing relationship indicator specifies a time difference between subframe N and a subframe for transmission of the first PUSCH of the plurality of PUSCH.
  • example 34 the apparatus of any of examples 31 through 33, wherein the transmission of the plurality of PUSCH is over a plurality of consecutive subframes.
  • example 35 the apparatus of any of examples 31 through 34, wherein the transmission of the plurality of PUSCH is over a plurality of subframes indicated by a bitmap.
  • example 36 the apparatus of either of examples 34 or 35, wherein the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe in a second burst subsequent to the first burst.
  • example 37 the apparatus of any of examples 31 through 36, wherein a
  • Modulation and Coding Scheme (MCS) and a precoding are identically applied to the plurality of subframes carrying the plurality of PUSCH.
  • Example 38 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 31 through 37.
  • UE User Equipment
  • Example 39 provides a method comprising: decoding, for a User Equipment
  • UE Downlink
  • DL Downlink
  • UL Uplink
  • PUSCH Physical Uplink Shared Channels
  • example 40 the method of example 39, wherein the timing relationship indicator specifies a subframe index within a frame for transmission of the first PUSCH of the plurality of PUSCH.
  • example 41 the method of example 39, wherein the DL transmission has been transmitted at a subframe N, and the timing relationship indicator specifies a time difference between subframe N and a subframe for transmission of the first PUSCH of the plurality of PUSCH.
  • example 42 the method of any of examples 39 through 41, wherein the transmission of the plurality of PUSCH is over a plurality of consecutive subframes.
  • example 43 the method of any of examples 39 through 42, wherein the transmission of the plurality of PUSCH is over a plurality of subframes indicated by a bitmap.
  • example 44 the method of any of examples 39 through 43, wherein the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe in a second burst subsequent to the first burst.
  • example 45 the method of any of examples 39 through 44, wherein a
  • Modulation and Coding Scheme (MCS) and a precoding are identically applied to the plurality of subframes carrying the plurality of PUSCH.
  • Example 46 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 39 through 45.
  • Example 47 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: means for decoding a Downlink (DL) transmission carrying an Uplink (UL) grant and a timing relationship indicator; means for encoding a plurality of Physical Uplink Shared Channels (PUSCH) corresponding to the UL grant and the timing relationship indicator; and means for initiating transmission of the plurality of PUSCH, subject to a Listen-Before-Talk (LBT) protocol, over a respectively corresponding plurality of subframes as specified by the timing relationship indicator.
  • UE User Equipment
  • eNB Evolved Node B
  • example 48 the apparatus of example 47, wherein the timing relationship indicator specifies a subframe index within a frame for transmission of the first PUSCH of the plurality of PUSCH.
  • example 49 the apparatus of example 47, wherein the DL transmission has been transmitted at a subframe N, and the timing relationship indicator specifies a time difference between subframe N and a subframe for transmission of the first PUSCH of the plurality of PUSCH.
  • example 50 the apparatus of any of examples 47 through 49, wherein the transmission of the plurality of PUSCH is over a plurality of consecutive subframes.
  • example 51 the apparatus of any of examples 47 through 50, wherein the transmission of the plurality of PUSCH is over a plurality of subframes indicated by a bitmap.
  • example 52 the apparatus of any of examples 47 through 51, wherein the
  • the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe in a second burst subsequent to the first burst.
  • example 53 the apparatus of any of examples 47 through 52, wherein a
  • Modulation and Coding Scheme (MCS) and a precoding are identically applied to the plurality of subframes carrying the plurality of PUSCH.
  • Example 54 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User Equipment (UE) to perform an operation comprising: decode a Downlink (DL) transmission carrying an Uplink (UL) grant and a timing relationship indicator; encode a plurality of Physical Uplink Shared Channels (PUSCH) corresponding to the UL grant and the timing relationship indicator; and initiate transmission of the plurality of PUSCH, subject to a Listen-Before-Talk (LBT) protocol, over a respectively corresponding plurality of subframes as specified by the timing relationship indicator.
  • UE User Equipment
  • example 55 the machine readable storage media of example 54, wherein the timing relationship indicator specifies a subframe index within a frame for transmission of the first PUSCH of the plurality of PUSCH.
  • example 56 the machine readable storage media of example 54, wherein the DL transmission has been transmitted at a subframe N, and the timing relationship indicator specifies a time difference between subframe N and a subframe for transmission of the first PUSCH of the plurality of PUSCH.
  • example 57 the machine readable storage media of any of examples 54 through 56, wherein the transmission of the plurality of PUSCH is over a plurality of consecutive subframes.
  • example 58 the machine readable storage media of any of examples 54 through 57, wherein the transmission of the plurality of PUSCH is over a plurality of subframes indicated by a bitmap.
  • example 59 the machine readable storage media of any of examples 54 through 58, wherein the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe in a second burst subsequent to the first burst.
  • Example 60 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: one or more processors to: decode a Downlink (DL) transmission carrying a plurality of Uplink (UL) grants and a plurality of timing relationship indicators; encode a plurality of Physical Uplink Shared Channels (PUSCH) corresponding respectively to the plurality of UL grants and corresponding respectively to the plurality of timing relationship indicators; and initiate transmission of the plurality of PUSCH, subject to a Listen-Before-Talk (LBT) protocol, over a respectively corresponding plurality of subframes specified by the plurality of timing relationship indicators.
  • LBT Listen-Before-Talk
  • example 62 the apparatus of example 61, wherein the plurality of timing relationship indicators specify a plurality of respectively corresponding subframe indices within a frame for transmission of the plurality of PUSCH.
  • example 63 the apparatus of either of examples 61 or 62, wherein the DL transmission has been transmitted at a subframe N, and the plurality of timing relationship indicators specify a plurality of respectively corresponding time differences between subframe N and a plurality of subframes for transmission of the plurality of PUSCH.
  • example 64 the apparatus of any of examples 61 through 63, wherein the
  • the DL transmission is transmitted in a first burst, and the DL transmission specifies a plurality of subframes in a second burst subsequent to the first burst.
  • Example 65 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 61 through 64.
  • UE User Equipment
  • Example 66 provides a method comprising: decoding, for a User Equipment
  • UE Downlink
  • DL Downlink
  • UL Uplink
  • PUSCH Physical Uplink Shared Channels
  • LBT Listen-Before-Talk
  • example 67 the method of example 66, wherein the plurality of timing relationship indicators specify a plurality of respectively corresponding subframe indices within a frame for transmission of the plurality of PUSCH.
  • example 68 the method of either of examples 66 or 67, wherein the DL transmission has been transmitted at a subframe N, and the plurality of timing relationship indicators specify a plurality of respectively corresponding time differences between subframe N and a plurality of subframes for transmission of the plurality of PUSCH.
  • example 69 the method of any of examples 66 through 68, wherein the DL transmission is transmitted in a first burst, and the DL transmission specifies a plurality of subframes in a second burst subsequent to the first burst.
  • Example 70 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 66 through 68.
  • Example 71 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: means for decoding a Downlink (DL) transmission carrying a plurality of Uplink (UL) grants and a plurality of timing relationship indicators; means for encoding a plurality of Physical Uplink Shared Channels (PUSCH) corresponding respectively to the plurality of UL grants and corresponding respectively to the plurality of timing relationship indicators; and means for initiating transmission of the plurality of PUSCH, subject to a Listen-Before-Talk (LBT) protocol, over a respectively corresponding plurality of subframes specified by the plurality of timing relationship indicators.
  • LBT Listen-Before-Talk
  • example 72 the apparatus of example 71, wherein the plurality of timing relationship indicators specify a plurality of respectively corresponding subframe indices within a frame for transmission of the plurality of PUSCH.
  • example 73 the apparatus of either of examples 71 or 72, wherein the DL transmission has been transmitted at a subframe N, and the plurality of timing relationship indicators specify a plurality of respectively corresponding time differences between subframe N and a plurality of subframes for transmission of the plurality of PUSCH.
  • example 74 the apparatus of any of examples 71 through 73, wherein the
  • the DL transmission is transmitted in a first burst, and the DL transmission specifies a plurality of subframes in a second burst subsequent to the first burst.
  • Example 75 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User
  • UE Equipment to perform an operation comprising: decode a Downlink (DL) transmission carrying a plurality of Uplink (UL) grants and a plurality of timing relationship indicators; encode a plurality of Physical Uplink Shared Channels (PUSCH) corresponding respectively to the plurality of UL grants and corresponding respectively to the plurality of timing relationship indicators; and initiate transmission of the plurality of PUSCH, subject to a Listen-Before-Talk (LBT) protocol, over a respectively corresponding plurality of subframes specified by the plurality of timing relationship indicators.
  • LBT Listen-Before-Talk
  • example 76 the machine readable storage media of example 75, wherein the plurality of timing relationship indicators specify a plurality of respectively corresponding subframe indices within a frame for transmission of the plurality of PUSCH.
  • example 77 the machine readable storage media of either of examples 75 or
  • the plurality of timing relationship indicators specify a plurality of respectively corresponding time differences between subframe N and a plurality of subframes for transmission of the plurality of PUSCH.
  • example 78 the machine readable storage media of any of examples 75 through 77, wherein the DL transmission is transmitted in a first burst, and the DL transmission specifies a plurality of subframes in a second burst subsequent to the first burst.
  • Example 79 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: one or more processors to: decode a Downlink (DL) transmission carrying an Uplink (UL) grant and a timing relationship indicator; encode a Physical Uplink Shared Channels (PUSCH) corresponding to the UL grant and the timing relationship indicator; and initiate transmission of the PUSCH, subject to a Listen-Before-Talk (LBT) protocol, in one of a plurality of subframes specified by the timing relationship indicator.
  • UE User Equipment
  • eNB Evolved Node B
  • LBT Listen-Before-Talk
  • example 80 the apparatus of example 79, wherein the timing relationship indicator specifies a subframe index for a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 81 the apparatus of either of examples 79 or 80, wherein the DL transmission has been transmitted at a subframe N, and the timing relationship indicator specifies a time difference between subframe N and first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 82 the apparatus of any of examples 79 through 81, wherein the
  • the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe of a second burst subsequent to the first burst, the starting subframe being a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • the timing relationship indicator additionally specifies a number of subframes over which the UL grant for transmission of the PUSCH is valid.
  • Example 84 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 79 through 83.
  • UE User Equipment
  • Example 85 provides a method comprising: decoding, for a User Equipment
  • UE Downlink
  • DL Downlink
  • UL Uplink
  • PUSCH Physical Uplink Shared Channels
  • example 86 the method of example 85, wherein the timing relationship indicator specifies a subframe index for a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 87 the method of either of examples 85 or 86, wherein the DL transmission has been transmitted at a subframe N, and the timing relationship indicator specifies a time difference between subframe N and first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 88 the method of any of examples 85 through 87, wherein the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe of a second burst subsequent to the first burst, the starting subframe being a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • timing relationship indicator additionally specifies a number of subframes over which the UL grant for transmission of the PUSCH is valid.
  • Example 90 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 85 through 89.
  • Example 91 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: means for decoding a Downlink (DL) transmission carrying an Uplink (UL) grant and a timing relationship indicator; means for encoding a Physical Uplink Shared Channels (PUSCH) corresponding to the UL grant and the timing relationship indicator; and means for initiating transmission of the PUSCH, subject to a Listen-Before-Talk (LBT) protocol, in one of a plurality of subframes specified by the timing relationship indicator.
  • UE User Equipment
  • eNB Evolved Node B
  • example 92 the apparatus of example 91, wherein the timing relationship indicator specifies a subframe index for a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 93 the apparatus of either of examples 91 or 92, wherein the DL transmission has been transmitted at a subframe N, and the timing relationship indicator specifies a time difference between subframe N and first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 94 the apparatus of any of examples 91 through 93, wherein the
  • the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe of a second burst subsequent to the first burst, the starting subframe being a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 95 the apparatus of any of examples 91 through 94, wherein the timing relationship indicator additionally specifies a number of subframes over which the UL grant for transmission of the PUSCH is valid.
  • Example 96 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User
  • UE Equipment to perform an operation comprising: decode a Downlink (DL) transmission carrying an Uplink (UL) grant and a timing relationship indicator; encode a Physical Uplink Shared Channels (PUSCH) corresponding to the UL grant and the timing relationship indicator; and initiate transmission of the PUSCH, subject to a Listen-Before-Talk (LBT) protocol, in one of a plurality of subframes specified by the timing relationship indicator.
  • DL Downlink
  • UL Uplink
  • PUSCH Physical Uplink Shared Channels
  • LBT Listen-Before-Talk
  • example 97 the machine readable storage media of example 96, wherein the timing relationship indicator specifies a subframe index for a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 98 the machine readable storage media of either of examples 96 or
  • the machine readable storage media of any of examples 96 through 98 wherein the DL transmission is transmitted in a first burst, and the DL transmission specifies a starting subframe of a second burst subsequent to the first burst, the starting subframe being a first subframe of a plurality of subframes over which the UL grant for transmission of the PUSCH is valid.
  • example 101 the apparatus of any of examples 1 through 7, 31 through 37,
  • the one or more processors comprise a baseband processor.
  • example 102 the apparatus of any of examples 1 through 7, 31 through 37,
  • 61 through 64, and 79 through 83 comprising a transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing transmissions, or decoding transmissions.
  • example 103 the apparatus of any of examples 1 through 7, 31 through 37,
  • 61 through 64, and 79 through 83 comprising a transceiver circuitry for generating transmissions and processing transmissions.

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Abstract

La présente invention concerne un appareil d'un équipement d'utilisateur (UE). L'appareil peut comprendre un premier ensemble de circuits, un deuxième ensemble de circuits, un troisième ensemble de circuits et un quatrième ensemble de circuits. Le premier ensemble de circuits peut être utilisable pour décoder une transmission de liaison descendante (DL) portant une autorisation de liaison montante, la transmission de DL ayant été transmise à une sous-trame N. Le second ensemble de circuits peut être utilisable pour coder une transmission de liaison montante portant un canal partagé de liaison montante physique (PUSCH), la transmission d'UL correspondant à l'autorisation d'UL. Le troisième ensemble de circuits peut être utilisable pour sélectionner un décalage M à partir d'une des : sous-trames 0, sous-trames 1, sous-trames 2, sous-trames 3 ou sous-trames 4. Le quatrième ensemble de circuits peut être utilisable pour lancer une transmission de la transmission d'UL, soumis à un protocole écouter avant de parler (LBT) au niveau d'une sous-trame N+M
PCT/US2016/048479 2015-12-07 2016-08-24 Procédés destinés à la réduction de latence entre l'autorisation de liaison montante et transmission de canal partagé de liaison montante physique WO2017099857A1 (fr)

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