WO2017078842A1 - Procédé pour améliorer les performances de liaison montante dans un spectre non autorisé par l'intermédiaire d'une configuration de seuil de détection d'énergie - Google Patents

Procédé pour améliorer les performances de liaison montante dans un spectre non autorisé par l'intermédiaire d'une configuration de seuil de détection d'énergie Download PDF

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Publication number
WO2017078842A1
WO2017078842A1 PCT/US2016/050264 US2016050264W WO2017078842A1 WO 2017078842 A1 WO2017078842 A1 WO 2017078842A1 US 2016050264 W US2016050264 W US 2016050264W WO 2017078842 A1 WO2017078842 A1 WO 2017078842A1
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Prior art keywords
energy detection
detection threshold
transmission
type
enb
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PCT/US2016/050264
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English (en)
Inventor
Jeongho Jeon
Hwan-Joon Kwon
Huaning Niu
Qiaoyang Ye
Abhijeet Bhorkar
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Intel IP Corporation
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Publication of WO2017078842A1 publication Critical patent/WO2017078842A1/fr

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    • 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

  • 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 a fifth generation (5G) wireless system / 5G mobile networks system.
  • 5G fifth generation
  • Fig. 1 illustrates a scenario of differentiated Energy Detection (ED) thresholds for Downlink (DL) Listen-Before-Talk at an Evolved Node-B (eNB) and Uplink (UL) LBT at a User Equipment (UE), in accordance with some embodiments of the disclosure.
  • ED differentiated Energy Detection
  • FIG. 2 illustrates a scenario of differentiated ED thresholds for DL LBT at an eNB for different traffic types, in accordance with some embodiments of the disclosure.
  • FIG. 3 illustrates a scenario of an additional ED threshold at eNB to facilitate
  • FIG. 4 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure.
  • FIG. 5 illustrates hardware processing circuitries for an eNB for improving
  • LAA UL performance through ED threshold configuration for LBT in accordance with some embodiments of the disclosure.
  • FIG. 6 illustrates hardware processing circuitries for an eNB for improving
  • LAA UL performance through ED threshold configuration for LBT in accordance with some embodiments of the disclosure.
  • Fig. 7 illustrates methods for an eNB for improving LAA UL performance through ED threshold configuration for LBT, in accordance with some embodiments of the disclosure.
  • Fig. 8 illustrates methods for an eNB for improving LAA UL performance through ED threshold configuration for LBT, in accordance with some embodiments of the disclosure.
  • FIG. 9 illustrates example components of a UE device, in accordance with some embodiments of the disclosure.
  • Various wireless cellular communication systems have been implemented or are being proposed, including a 3rd Generation Partnership Project (3GPP) Universal Mobile Telecommunications System (UMTS), a 3GPP Long-Term Evolution (LTE) system, a 3GPP LTE-Advanced system, and a 5th Generation wireless system / 5th Generation mobile networks (5G) system / 5th Generation new radio (NR) system.
  • 3GPP 3rd Generation Partnership Project
  • UMTS Universal Mobile Telecommunications System
  • LTE Long-Term Evolution
  • LTE-Advanced 3GPP LTE-Advanced
  • 5G 5th Generation mobile networks
  • NR 5th Generation new radio
  • LAA License- Assisted Access
  • SP-71 3GPP Release 13
  • standalone operation of LTE systems in unlicensed spectrum may be supported in future releases.
  • An unlicensed frequency band of current interest in the operation of LTE systems and successor systems is the 5 Gigahertz (GHz) band, which has both a wide spectrum and common availability globally.
  • the 5 GHz band is governed by the Federal Communications Commission (FCC) in the US and the European Telecommunications Standards Institute (ETSI) in Europe.
  • the main incumbent systems in the 5 GHz band are Wireless Local Area Networks (WLAN), specifically those based on the IEEE 802.11 a/n/ac technologies.
  • WLAN systems may be widely deployed by both individuals and operators for carrier-grade access service and data offloading, sufficient care must be taken before deployment of potentially-conflicting LTE systems in the 5 GHz band.
  • LBT Listen- Before-Talk
  • a radio transmitter may first sense a medium and may then transmit through the medium if the medium is sensed to be idle.
  • Release-13 compliant LTE systems employing LAA may incorporate LBT features to promote fair coexistence with incumbent WLAN systems.
  • LAA Uplink (UL) access is not precluded from further discussion.
  • LTE LAA UL access as well as LTE UL access over unlicensed spectrum in general, may be included in future 3GPP technological developments.
  • LBT design for LTE UL access may also be reused for Device-to-Device (D2D) communication over unlicensed spectrum.
  • D2D Device-to-Device
  • LTE LAA UL operation has been observed to perform poorly when compared to LTE LAA DL operation, or even when compared to WLAN operation.
  • One cause of this UL performance gap may be that LTE systems designed for use over licensed spectrum, which have a scheduled nature, may be disposed to coexist with WLAN systems that have a distributed, random-access nature.
  • an eNB may first send a UL scheduling grant to one or more UEs, then the UEs may send data over designated UL resources.
  • an eNB may first be disposed to win a channel access competition (by, for example, an LBT procedure) to send a UL scheduling grant to one or more UEs, and the UEs may then additionally be disposed to win a channel access competition to send UL data.
  • the eNB may already encounter one-to-many competition, since WLAN stations (STAs) access the medium for UL transmission in a distributed and independent manner.
  • STAs WLAN stations
  • a UE After a UE receives a UL scheduling grant, it may be disposed to perform
  • the eNB and UEs may be disposed to repeat the procedures described above.
  • an ED threshold for DL transmission by an eNB may be differentiated from an ED threshold for UL transmission by a UE. For example, DL transmission by an eNB may use a more conservative ED threshold, whereas UL transmission by a UE may use a less conservative ED threshold.
  • an ED threshold for transmissions of one traffic type may be differentiated from an ED threshold for transmissions of another traffic type.
  • UL grant-only transmissions may use a less conservative ED threshold, and other DL transmissions may use a more conservative ED threshold.
  • DRS Discovery Reference Signal
  • DRS may use a less conservative ED threshold, and other DL transmissions may use a more conservative ED threshold.
  • an additional, more conservative ED threshold may be employed by an eNB such that if an LBT at the eNB passes with the more conservative ED threshold, a UE served by the eNB may be allowed to transmit without performing LBT itself.
  • various embodiments may employ any of the methods and mechanisms for improving LAA UL performance through ED threshold configuration for LBT described herein, alone or in combination.
  • any represented signal 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.
  • A, B, and/or C means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).
  • combinatorial logic and sequential logic discussed in the present disclosure may pertain both to physical structures (such as AND gates, OR gates, or XOR gates), or to synthesized or otherwise optimized collections of devices implementing the logical structures that are Boolean equivalents of the logic under discussion.
  • 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.
  • 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.
  • Fig. 1 illustrates a scenario of differentiated ED thresholds for DL Listen-
  • a scenario 100 may comprise an eNB 110 and UE 120.
  • an ED threshold ⁇ ⁇ for DL LBT at eNB 110 may be differentiated from an ED threshold for UL LBT at UE 120.
  • ED threshold Tffi to be used by UEs may be higher, or less conservative, than ED threshold ⁇ B to be used by eNBs.
  • M t may be a positive real number.
  • ⁇ B may be -82 dBm
  • M t may be 20 dBm
  • 7# may be -62 dBm.
  • a DL sensing range 112 by eNB 110 (which may be associated with ED threshold ⁇ ⁇ ) may accordingly have a greater extent than a UL sensing range 122 by UE 120 (which may be associated with ED threshold Tffi ).
  • DL sensing range 112 may encompass UL sensing range 122.
  • eNB 110 may perform LAA DL LBT with a more conservative ED threshold for DL transmissions which may include UL scheduling grants, and UE 120 (which may be a scheduled UE) may perform LAA DL LBT with a less conservative ED threshold before its own transmissions.
  • An advantage of such differentiated ED thresholds is that UE 120 may be less likely to cause a hidden node problem.
  • the profundity of a hidden node problem incurred by a scheduled UE may be dependent on a distance between an eNB and the UE. For example, if a scheduled UE is very close to an eNB, a UL LBT to performed by the UE may be redundant. As another example, if a scheduled UE is located far from an eNB, then a UL LBT may be important to reduce a hidden node effect. Therefore, in some embodiments, M 1 and/or Tjji may be differentiated among UEs depending on their geographical locations.
  • FIG. 2 illustrates a scenario of differentiated ED thresholds for DL LBT at an eNB for different traffic types, in accordance with some embodiments of the disclosure.
  • a scenario 200 may comprise an eNB 210 and a UE 220.
  • an ED threshold for DL LBT at eNB 210 for a first traffic type may be differentiated from an ED threshold at eNB 210 for a second traffic type.
  • an ED threshold used by eNB 210 for DL transmissions containing UL scheduling grants may be different and potentially higher than an ED threshold used by eNB 210 for other DL transmissions.
  • an ED threshold ⁇ for DL LBT to be used by eNB 210 for DL grant/data transmissions may be lower, or more conservative, than an ED threshold to be used by eNB 210 for UL grant-only transmissions.
  • M 2 may be a positive real number.
  • ⁇ ⁇ may be -82 dBm
  • M 2 may be 20 dBm
  • ⁇ $ may be -62 dBm.
  • a DL sensing range 212 by eNB 210 may accordingly have a greater extent than, and may encompass, a reduced DL sensing range 214 by eNB 210 (which may be associated with ED threshold ⁇ used for UL grant-only transmissions).
  • a portion of UL sensing range 222 by UE 220 that is encompassed by DL sensing range 212 may be greater than a portion of UL sensing range 222 that is encompassed by DL sensing range 214.
  • eNB 210 may perform LAA DL LBT with a less conservative ED threshold for grant-only transmissions, and UE 220 (which may be a scheduled UE) may perform LAA UL LBT before its own transmission.
  • the LAA DL LBT performed by eNB 210 may be somewhat redundant, and may not be as helpful as the LAA UL LBT performed by UE 220.
  • An advantage of such differentiated eNB ED thresholds is that the LAA DL LBT performed by eNB 210 may be easier to satisfy. Note however that eNB 210 may still be disposed to perform an LBT even for UL grant-only transmissions, in order to protect hidden nodes due to the transmissions by eNB 210.
  • M 3 may be a positive real number.
  • ⁇ ⁇ ⁇ may be -82 dBm
  • M 3 may be 20 dBm
  • ⁇ ⁇ 3 may be -62 dBm.
  • reduced DL sensing range 214 (which may be associated with ED threshold ⁇ ⁇ for DRS transmissions) may have a lesser extent than, and may be encompassed by, DL sensing range 212 (which may be associated with ED threshold ⁇ ⁇ for other transmissions).
  • An advantage of allowing less conservative ED thresholds for DRS transmissions is that more reliable connection management may thereby be promoted.
  • Fig. 3 illustrates a scenario of an additional ED threshold at eNB to facilitate
  • a scenario 300 may comprise an eNB 310, a first UE 320, and a second UE 330.
  • an ED threshold for LBT performed at eNB 310 which may be for purposes of DL transmissions from eNB 310, may be differentiated from another ED threshold for LBT performed at eNB 310, which may be for purposes of UL transmissions from a UE such as UE 320.
  • an additional ED threshold to be used for LBT performed by eNB 310 for purposes of UL transmissions from UE 320 may be lower, or more conservative, than ED threshold ⁇ ⁇ ⁇ to be used for LBT performed by eNB 310 for purposes of DL transmissions from eNB 310.
  • UE 320 (which may be a scheduled UE) may transmit UL transmissions without performing LBT if the LBT performed by eNB 310 using additional ED threshold ⁇ ⁇ B passes.
  • M 4 may be a positive real number.
  • ⁇ ⁇ ⁇ may be -82 dBm
  • M 4 may be 10 dBm
  • ⁇ ? ⁇ may be -92 dBm.
  • a DL sensing range 312 by eNB 310 may be less than, and may be encompassed by, a UL sensing range 314 by eNB 310 (which may be associated with additional ED threshold 7y for purposes of UL transmissions from UE 320).
  • UL sensing range 314 may encompass a substantial portion of, or an entirety of, a UL sensing range 322 by first UE 320.
  • portions of UL sensing range 322 and/or a UL sensing range 332 by second UE 330 that are encompassed by UL sensing range 314 may be greater than portions of UL sensing range 322 and/or UL sensing range 332 that are encompassed by DL sensing range 312.
  • eNB 310 may indicate to UE 320 that it may transmit without performing an additional LBT. Otherwise, if the LBT at eNB 310 passes against the less conservative ED threshold ⁇ ⁇ ⁇ , UE 320 may be disposed to perform an LBT before its UL transmission.
  • T ⁇ B such as -92 dBm
  • an eNB may divide UEs into a plurality of groups. For some embodiments, an eNB may divide UEs into two groups, S c(ose and S ⁇ ar , according to the proximity of each UE to the eNB. If an LBT at the eNB passes against the additional, more conservative ED threshold T ⁇ i B , the eNB may indicate to UEs belonging to the S ciose group that they may transmit without performing an additional LBT.
  • UEs belonging to the S ⁇ ar group may still be disposed to perform an LBT before their UL transmissions, regardless of whether the eNB passes against the additional, more conservative ED threshold T ⁇ i B .
  • an eNB may divide UEs into two or more groups according to their proximity to eNB, and may apply a different value of M 4 to different group of UEs. The values of M 4 used may increase based upon a distance of each groups of UEs from the eNB.
  • Fig. 4 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure.
  • Fig. 4 includes block diagrams of an eNB 410 and a UE 430 which are operable to co-exist with each other and other elements of an LTE network. High-level, simplified architectures of eNB 410 and UE 430 are described so as not to obscure the embodiments. It should be noted that in some embodiments, eNB 410 may be a stationary non-mobile device.
  • eNB 410 is coupled to one or more antennas 405, and UE 430 is similarly coupled to one or more antennas 425.
  • eNB 410 may incorporate or comprise antennas 405, and UE 430 in various embodiments may incorporate or comprise antennas 425.
  • antennas 405 and/or antennas 425 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 405 are separated to take advantage of spatial diversity.
  • eNB 410 and UE 430 are operable to communicate with each other on a network, such as a wireless network.
  • eNB 410 and UE 430 may be in communication with each other over a wireless communication channel 450, which has both a downlink path from eNB 410 to UE 430 and an uplink path from UE 430 to eNB 410.
  • eNB 410 may include a physical layer circuitry 412, a MAC (media access control) circuitry 414, a processor 416, a memory 418, and a hardware processing circuitry 420.
  • MAC media access control
  • physical layer circuitry 412 includes a transceiver 413 for providing signals to and from UE 430.
  • Transceiver 413 provides signals to and from UEs or other devices using one or more antennas 405.
  • MAC circuitry 414 controls access to the wireless medium.
  • Memory 418 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 420 may comprise logic devices or circuitry to perform various operations.
  • processor 416 and memory 418 are arranged to perform the operations of hardware processing circuitry 420, such as operations described herein with reference to logic devices and circuitry within eNB 410 and/or hardware processing circuitry 420.
  • eNB 410 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 430 may include a physical layer circuitry 432, a MAC circuitry 434, a processor 436, a memory 438, a hardware processing circuitry 440, a wireless interface 442, and a display 444.
  • a physical layer circuitry 432 may include a physical layer circuitry 432, a MAC circuitry 434, a processor 436, a memory 438, a hardware processing circuitry 440, a wireless interface 442, and a display 444.
  • 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 432 includes a transceiver 433 for providing signals to and from eNB 410 (as well as other eNBs). Transceiver 433 provides signals to and from eNBs or other devices using one or more antennas 425.
  • MAC circuitry 434 controls access to the wireless medium.
  • Memory 438 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 442 may be arranged to allow the processor to communicate with another device.
  • Display 444 may provide a visual and/or tactile display for a user to interact with UE 430, such as a touch-screen display.
  • Hardware processing circuitry 440 may comprise logic devices or circuitry to perform various operations.
  • processor 436 and memory 438 may be arranged to perform the operations of hardware processing circuitry 440, such as operations described herein with reference to logic devices and circuitry within UE 430 and/or hardware processing circuitry 440.
  • UE 430 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. 5 and 6 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. 4 and Figs. 5 and 6 can operate or function in the manner described herein with respect to any of the figures.
  • eNB 410 and UE 430 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. 5 illustrates hardware processing circuitries for an eNB for improving
  • an eNB may include various hardware processing circuitries discussed below (such as hardware processing circuitry 500 of Fig. 5 and hardware processing circuitry 600 of Fig. 6), which may in rum comprise logic devices and/or circuitry operable to perform various operations.
  • eNB 410 or various elements or components therein, such as hardware processing circuitry 420, 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 416 and/or one or more other processors which eNB 410 may comprise
  • memory 418 and/or other elements or components of eNB 410 (which may include hardware processing circuitry 420) 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 416 (and/or one or more other processors which eNB 410 may comprise) may be a baseband processor.
  • an apparatus of eNB 410 (or another eNB or base station), which may be operable to communicate with one or more UEs on a wireless network, may comprise hardware processing circuitry 500.
  • hardware processing circuitry 500 may comprise one or more antenna ports 505 operable to provide various transmissions over a wireless communication channel (such as wireless communication channel 450).
  • Antenna ports 505 may be coupled to one or more antennas 507 (which may be antennas 405).
  • hardware processing circuitry 500 may incorporate antennas 507, while in other embodiments, hardware processing circuitry 500 may merely be coupled to antennas 507.
  • Antenna ports 505 and antennas 507 may be operable to provide signals from an eNB to a wireless communications channel and/or a UE, and may be operable to provide signals from a UE and/or a wireless communications channel to an eNB.
  • antenna ports 505 and antennas 507 may be operable to provide transmissions from eNB 410 to wireless communication channel 450 (and from there to UE 430, or to another UE).
  • antennas 507 and antenna ports 505 may be operable to provide transmissions from a wireless communication channel 450 (and beyond that, from UE 430, or another UE) to eNB 410.
  • hardware processing circuitry 500 may comprise a first circuitry 510, a second circuitry 520, and a third circuitry 530.
  • First circuitry 510 may be operable to sense a channel of the wireless network on which LAA transmissions (e.g., LAA SCell transmissions) are performed.
  • Second circuitry 520 may be operable to detect a power received from the channel, and/or to detect a power on the channel.
  • Third circuitry 530 may be operable to generate a transmission of a first type if the power detected is less than a first energy detection threshold, and to generate a transmission of a second type if the power detected is less than a second energy detection threshold.
  • Hardware processing circuity 500 may also comprise a baseband processor, which may be operable to sense the channel of the wireless network, and/or may be operable to detect the power received from the channel.
  • the first type of transmission may comprise transmissions including discovery signal.
  • the first type of transmission may comprise transmissions lacking PDSCH, and for some embodiments, the first type of transmission may comprise transmissions carrying PDSCH.
  • the first type of transmission may comprise transmissions including discovery signal and lacking PDSCH, or transmissions including discovery signal and carrying PDSCH, or both.
  • the first energy detection threshold may be higher than the second energy detection threshold. In some embodiments, the first energy detection threshold may be higher than the second energy detection threshold by a predetermined amount M.
  • the eNB may operate one or more LAA SCells. Some embodiments may also comprise a transceiver circuitry to transmit the transmission of the first type and the transmission of the second type.
  • first circuitry 510, second circuitry 520, and third circuitry 530 may be implemented as separate circuitries. In other embodiments, one or more of first circuitry 510, second circuitry 520, and third circuitry 530 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • an apparatus of eNB 410 (or another eNB or base station), which may be operable to communicate with one or more UEs on a wireless network, may comprise hardware processing circuitry 600.
  • hardware processing circuitry 600 may comprise one or more antenna ports 605 operable to provide various transmissions over a wireless communication channel (such as wireless communication channel 450).
  • Antenna ports 605 may be coupled to one or more antennas 607 (which may be antennas 405).
  • hardware processing circuitry 600 may incorporate antennas 607, while in other embodiments, hardware processing circuitry 600 may merely be coupled to antennas 607.
  • Antenna ports 605 and antennas 607 may be operable to provide signals from an eNB to a wireless communications channel and/or a UE, and may be operable to provide signals from a UE and/or a wireless communications channel to an eNB.
  • antenna ports 605 and antennas 607 may be operable to provide transmissions from eNB 410 to wireless communication channel 450 (and from there to UE 430, or to another UE).
  • antennas 607 and antenna ports 605 may be operable to provide transmissions from a wireless communication channel 450 (and beyond that, from UE 430, or another UE) to eNB 410.
  • hardware processing circuitry 600 may comprise a first circuitry 610, a second circuitry 620, and a third circuitry 630.
  • First circuitry 610 may be operable to establish a first ED threshold for transmissions of a first traffic type and a second ED threshold for transmissions of a second traffic type different from the first traffic type.
  • Second circuitry 620 may be operable to identify an ED level of a channel of the wireless network.
  • Third circuitry 630 may be operable to transmit a transmission of the first traffic type if the sensed ED level is less than a first ED threshold, and to transmit a transmission of the second traffic type if the sensed ED level is less than a second ED threshold different from the first ED threshold.
  • Hardware processing circuity 600 may also comprise a baseband processor, which may be operable to establish the first ED threshold and second ED threshold, and/or may be operable to identify the ED level of the channel.
  • the first traffic type may comprise DRS transmissions.
  • the first traffic type may carry PDSCH transmissions, and for some embodiments, the first traffic type may lack PDSCH transmissions. Accordingly, in various embodiments, the first traffic type may comprise transmissions carrying DRS and carrying PDSCH, or transmissions carrying DRS and lacking PDSCH, or both.
  • the first ED threshold may be higher than the second
  • the first ED threshold may be higher than the second ED threshold by a predetermined amount M.
  • the wireless channel may be subj ect to License-
  • the eNB may comprise an SCell. Some embodiments may also comprise a transceiver circuitry to transmit transmissions of the first traffic type and transmissions of the second traffic type.
  • first circuitry 610, second circuitry 620, and third circuitry 630 may be implemented as separate circuitries. In other embodiments, one or more of first circuitry 610, second circuitry 620, and third circuitry 630 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • Fig. 7 illustrates methods for an eNB for improving LAA UL performance through ED threshold configuration for LBT, in accordance with some embodiments of the disclosure.
  • Fig. 8 illustrates methods for an eNB for improving LAA UL performance through ED threshold configuration for LBT, in accordance with some embodiments of the disclosure.
  • various methods that may relate to eNB 410 and hardware processing circuitry 420 are discussed below.
  • the actions in methods 700 and 800 of Figs. 7 and 8 are shown in a particular order, the order of the actions can be modified. Thus, the illustrated embodiments can be performed in a different order, and some actions may be performed in parallel.
  • Some of the actions and/or operations listed in Figs. 7 and 8 are optional in accordance with certain embodiments. The numbering of the actions presented is for the sake of clarity and is not intended to prescribe an order of operations in which the various actions must occur. Additionally, operations from the various flows may be utilized in a variety of combinations.
  • machine readable storage media may have executable instructions that, when executed, cause eNB 410 and/or hardware processing circuitry 420 to perform an operation comprising the methods of Figs. 7 and 8.
  • Such machine readable storage media may include any of a variety of storage media, like magnetic storage media (e.g., magnetic tapes or magnetic disks), optical storage media (e.g., optical discs), electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash-memory-based storage media), or any other tangible storage media or non-transitory storage media.
  • an apparatus may comprise means for performing various actions and/or operations of the methods of Figs. 7 and 8.
  • a method 700 may comprise a sensing 710, a detecting
  • a channel of the wireless network on which LAA SCell transmissions are performed may be sensed.
  • a power received from the channel may be detected.
  • a transmission of a first type may be generated if the power detected is less than a first energy detection threshold.
  • a transmission of a second type may be generated if the power detected is less than a second energy detection threshold. The second type of transmission may be different than the first type of transmission, and the second energy detection threshold may be different than the first energy detection threshold.
  • the first type of transmission may comprise transmissions including discovery signal.
  • the first type of transmission may comprise transmissions lacking PDSCH, and for some embodiments, the first type of transmission may comprise transmissions carrying PDSCH.
  • the first type of transmission may comprise transmissions including discovery signal and lacking PDSCH, or transmissions including discovery signal and carrying PDSCH, or both.
  • the first energy detection threshold may be higher than the second energy detection threshold. In some embodiments, the first energy detection threshold may be higher than the second energy detection threshold by a predetermined amount M. In various embodiments, the eNB may operate one or more LAA SCells.
  • a method 800 may comprise an establishing 810, an identifying 820, a transmitting 830, and a transmitting 840.
  • a first ED threshold may be established for transmissions of a first traffic type and a second ED threshold may be established for transmissions of a second traffic type different from the first traffic type.
  • identifying 820 an ED level of a channel of the wireless network may be identified.
  • transmitting 830 a transmission of the first traffic type may be transmitted if the sensed ED level is less than a first ED threshold.
  • transmitting 840 a transmission of the second traffic type may be transmitted if the sensed ED level is less than a second ED threshold different from the first ED threshold.
  • the first traffic type may comprise DRS transmissions.
  • the first traffic type may comprise PDSCH transmissions, and for some embodiments, the first traffic type may lack PDSCH transmissions. Accordingly, in various embodiments, the first traffic type may comprise transmissions carrying DRS and carrying PDSCH, or transmissions carrying DRS and lacking PDSCH, or both.
  • the first ED threshold may be higher than the second
  • the first ED threshold may be higher than the second ED threshold by a predetermined amount M.
  • the wireless channel may be subject to License-
  • the eNB may comprise an SCell.
  • Fig. 9 illustrates example components of a UE device 900, in accordance with some embodiments of the disclosure.
  • the UE device 900 may include application circuitry 902, baseband circuitry 904, Radio Frequency (RF) circuitry 906, front- end module (FEM) circuitry 908, a low-power wake-up receiver (LP-WUR), and one or more antennas 910, coupled together at least as shown.
  • RF Radio Frequency
  • FEM front- end module
  • LP-WUR low-power wake-up receiver
  • the UE device 900 may include additional elements such as, for example, memory /storage, display,
  • the application circuitry 902 may include one or more application processors.
  • the application circuitry 902 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 904 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the baseband circuitry 904 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 906 and to generate baseband signals for a transmit signal path of the RF circuitry 906.
  • Baseband processing circuity 904 may interface with the application circuitry 902 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 906.
  • the baseband circuitry 904 may include a second generation (2G) baseband processor 904A, third generation (3G) baseband processor 904B, fourth generation (4G) baseband processor 904C, and/or other baseband processor(s) 904D for other existing generations, generations in development or to be developed in the future (e.g., fifth generation (5G), 6G, etc.).
  • the baseband circuitry 904 e.g., one or more of baseband processors 904A-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 904 may include Fast-Fourier Transform (FFT), precoding, and/or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • encoding/decoding circuitry of the baseband circuitry 904 may include convolution, tail-biting convolution, turbo, Viterbi, and/or Low Density Parity Check (LDPC) encoder/decoder functionality.
  • LDPC Low Density Parity Check
  • modulation/demodulation and encoder/decoder functionality are not limited to these examples and may include other suitable functionality in other embodiments.
  • the baseband circuitry 904 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) 904E of the baseband circuitry 904 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) 904F.
  • DSP audio digital signal processor
  • the audio DSP(s) 904F 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 904 and the application circuitry 902 may be implemented together such as, for example, on a system on a chip (SOC).
  • SOC system on a chip
  • the baseband circuitry 904 may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry 904 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
  • RF circuitry 906 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry 906 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • RF circuitry 906 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 908 and provide baseband signals to the baseband circuitry 904.
  • RF circuitry 906 may also include a transmit signal path which may include circuitry to up-convert baseband signals provided by the baseband circuitry 904 and provide RF output signals to the FEM circuitry 908 for transmission.
  • the RF circuitry 906 may include a receive signal path and a transmit signal path.
  • the receive signal path of the RF circuitry 906 may include mixer circuitry 906A, amplifier circuitry 906B and filter circuitry 906C.
  • the transmit signal path of the RF circuitry 906 may include filter circuitry 906C and mixer circuitry 906A.
  • RF circuitry 906 may also include synthesizer circuitry 906D for synthesizing a frequency for use by the mixer circuitry 906A of the receive signal path and the transmit signal path.
  • the mixer circuitry 906A of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 908 based on the synthesized frequency provided by synthesizer circuitry 906D.
  • the amplifier circuitry 906B may be configured to amplify the down-converted signals and the filter circuitry 906C 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 904 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 906A of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 906A of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 906D to generate RF output signals for the FEM circuitry 908.
  • the baseband signals may be provided by the baseband circuitry 904 and may be filtered by filter circuitry 906C.
  • the filter circuitry 906C may include a low-pass filter (LPF), although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 906A of the receive signal path and the mixer circuitry 906A 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 906A of the receive signal path and the mixer circuitry 906A 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 906A of the receive signal path and the mixer circuitry 906A may be arranged for direct down-conversion and/or direct up-conversion, respectively.
  • the mixer circuitry 906A of the receive signal path and the mixer circuitry 906A 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 906 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 904 may include a digital baseband interface to communicate with the RF circuitry 906.
  • 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 906D 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 906D may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 906D may be configured to synthesize an output frequency for use by the mixer circuitry 906A of the RF circuitry 906 based on a frequency input and a divider control input.
  • the synthesizer circuitry 906D 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 904 or the applications processor 902 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 902.
  • Synthesizer circuitry 906D of the RF circuitry 906 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 906D 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 906 may include an IQ/polar converter.
  • FEM circuitry 908 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 910, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 906 for further processing.
  • FEM circuitry 908 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 906 for transmission by one or more of the one or more antennas 910.
  • the FEM circuitry 908 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 906).
  • LNA low-noise amplifier
  • the transmit signal path of the FEM circuitry 908 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 906), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 910.
  • PA power amplifier
  • the UE 900 comprises a plurality of power saving mechanisms. If the UE 900 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 UE 900 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 900 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 900 described herein.
  • DRAM Dynamic RAM
  • Example 1 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: one or more processors to: sense a channel of the wireless network on which License- Assisted Access (LAA) Secondary Cell (SCell) transmissions are performed; detect a power received from the channel; generate a transmission of a first type if the power detected is less than a first energy detection threshold; and generate a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; wherein the second energy detection threshold is different than the first energy detection threshold; and wherein the one or more processors comprise a baseband processor.
  • LAA License- Assisted Access
  • SCell Secondary Cell
  • the apparatus of example 1 wherein the first type of transmission comprises transmissions including discovery signal.
  • example 3 the apparatus of either of examples 1 or 2, wherein the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 4 the apparatus of any of examples 1 through 3, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 5 the apparatus of example 4, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • example 6 the apparatus of any of examples 1 through 5, wherein the eNB operates one or more LAA SCells.
  • example 7 the apparatus of any of examples 1 through 6, further comprising: a transceiver circuitry to transmit the transmission of the first type and the transmission of the second type.
  • Example 8 provides an Evolved Node B (eNB) device comprising an application processor, a memory, one or more antenna ports, and an interface for allowing the application processor to communicate with another device, the eNB device including the apparatus of any of examples 1 through 7.
  • eNB Evolved Node B
  • Example 9 provides a method comprising: sensing, for an Evolved Node B
  • eNB operable to communicate with a User Equipment (UE), a channel of the wireless network on which License- Assisted Access (LAA) Secondary Cell (SCell) transmissions are performed; detecting a power received from the channel; generating a transmission of a first type if the power detected is less than a first energy detection threshold; and generating a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; and wherein the second energy detection threshold is different than the first energy detection threshold.
  • LAA License- Assisted Access
  • SCell Secondary Cell
  • the method of example 9, wherein the first type of transmission comprises transmissions including discovery signal.
  • example 11 the method of either of examples 9 or 10, wherein the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 12 the method of any of examples 9 through 1 1, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 13 the method of example 12, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • Example 14 the method of any of examples 9 through 13, wherein the eNB operates one or more LAA SCells.
  • Example 15 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 9 through 14.
  • Example 16 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: means for sensing a channel of the wireless network on which License- Assisted Access (LAA)
  • eNB Evolved Node B
  • UE User Equipment
  • LAA License- Assisted Access
  • SCell Secondary Cell transmissions are performed; means for detecting a power received from the channel; means for generating a transmission of a first type if the power detected is less than a first energy detection threshold; and means for generating a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; and wherein the second energy detection threshold is different than the first energy detection threshold.
  • the apparatus of example 16, wherein the first type of transmission comprises transmissions including discovery signal.
  • example 18 the apparatus of either of examples 16 or 17, wherein the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 19 the apparatus of any of examples 16 through 18, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 20 the apparatus of example 19, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • example 21 the apparatus of any of examples 16 through 20, wherein the eNB operates one or more LAA SCells.
  • Example 22 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of an Evolved Node B (eNB) to perform an operation comprising: sense a channel of the wireless network on which License- Assisted Access (LAA) Secondary Cell (SCell) transmissions are performed; detect a power received from the channel; generate a transmission of a first type if the power detected is less than a first energy detection threshold; and generate a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; and wherein the second energy detection threshold is different than the first energy detection threshold.
  • the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 25 the machine readable storage media of any of examples 22 through 24, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 26 the machine readable storage media of example 25, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • example 27 the machine readable storage media of any of examples 22 through 26, wherein the eNB operates one or more LAA SCells.
  • Example 28 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: one or more processors to: sense a channel of the wireless network on which License- Assisted Access (LAA) Secondary Cell (SCell) transmissions are performed; detect a power on the channel; generate a transmission of a first type if the power detected is less than a first energy detection threshold; and generate a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; wherein the second energy detection threshold is different than the first energy detection threshold; and wherein the one or more processors comprise a baseband processor.
  • LAA License- Assisted Access
  • SCell Secondary Cell
  • the apparatus of example 28, wherein the first type of transmission comprises transmissions including discovery signal.
  • example 30 the apparatus of either of examples 28 or 29, wherein the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 31 the apparatus of any of examples 28 through 30, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 32 the apparatus of example 31, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • example 33 the apparatus of any of examples 28 through 32, wherein the eNB operates one or more LAA SCells.
  • the apparatus of any of examples 28 through 33 further comprising: a transceiver circuitry to transmit the transmission of the first type and the transmission of the second type.
  • Example 35 provides an Evolved Node B (eNB) device comprising an application processor, a memory, one or more antenna ports, and an interface for allowing the application processor to communicate with another device, the eNB device including the apparatus of any of examples 28 through 34.
  • eNB Evolved Node B
  • Example 36 provides a method comprising: sensing, for an Evolved Node B
  • eNB operable to communicate with a User Equipment (UE), a channel of the wireless network on which License- Assisted Access (LAA) Secondary Cell (SCell) transmissions are performed; detecting a power on the channel; generating a transmission of a first type if the power detected is less than a first energy detection threshold; and generating a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; and wherein the second energy detection threshold is different than the first energy detection threshold.
  • LAA License- Assisted Access
  • SCell Secondary Cell
  • example 37 the method of example 36, wherein the first type of transmission comprises transmissions including discovery signal.
  • example 38 the method of either of examples 36 or 37, wherein the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 39 the method of any of examples 36 through 38, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 40 the method of example 39, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • example 41 the method of any of examples 36 through 40, wherein the eNB operates one or more LAA SCells.
  • Example 42 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 36 through 41.
  • Example 43 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: means for sensing a channel of the wireless network on which License- Assisted Access (LAA) Secondary Cell (SCell) transmissions are performed; means for detecting a power on the channel; means for generating a transmission of a first type if the power detected is less than a first energy detection threshold; and means for generating a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; and wherein the second energy detection threshold is different than the first energy detection threshold.
  • LAA License- Assisted Access
  • SCell Secondary Cell
  • the apparatus of example 43, wherein the first type of transmission comprises transmissions including discovery signal.
  • example 45 the apparatus of either of examples 43 or 44, wherein the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 46 the apparatus of any of examples 43 through 45, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 47 the apparatus of example 46, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • example 48 the apparatus of any of examples 43 through 47, wherein the eNB operates one or more LAA SCells.
  • Example 49 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of an Evolved Node B (eNB) to perform an operation comprising: sense a channel of the wireless network on which License- Assisted Access (LAA) Secondary Cell (SCell) transmissions are performed; detect a power on the channel; generate a transmission of a first type if the power detected is less than a first energy detection threshold; and generate a transmission of a second type if the power detected is less than a second energy detection threshold, wherein the second type of transmission is different than the first type of transmission; and wherein the second energy detection threshold is different than the first energy detection threshold.
  • LAA License- Assisted Access
  • SCell Secondary Cell
  • example 50 the machine readable storage media of example 49, wherein the first type of transmission comprises transmissions including discovery signal.
  • the machine readable storage media of either of examples 49 or 50, wherein the first type of transmission comprises transmissions lacking Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • example 52 the machine readable storage media of any of examples 49 through 51, wherein the first energy detection threshold is higher than the second energy detection threshold.
  • example 53 the machine readable storage media of example 52, wherein the first energy detection threshold is higher than the second energy detection threshold by a predetermined amount M.
  • example 54 the machine readable storage media of any of examples 49 through 53, wherein the eNB operates one or more LAA SCells.
  • Example 55 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: one or more processors to: establish a first energy detection (ED) threshold for transmissions of a first traffic type and a second ED threshold for transmissions of a second traffic type different from the first traffic type; identify an ED level of a channel of the wireless network; transmit a transmission of the first traffic type if the sensed ED level is less than a first ED threshold; and transmit a transmission of the second traffic type if the sensed ED level is less than a second ED threshold different from the first ED threshold.
  • ED energy detection
  • UE User Equipment
  • example 56 the apparatus of example 55, wherein the first traffic type comprises Discovery Reference Signal transmissions.
  • example 57 the apparatus of either of examples 55 or 56, wherein the first traffic type comprises Physical Downlink Shared Channel transmissions.
  • example 58 the apparatus of any of examples 55 through 57, wherein the first ED threshold is higher than the second ED threshold.
  • example 59 the apparatus of example 58, wherein the first ED threshold is higher than the second ED threshold by a predetermined amount M.
  • example 60 the apparatus of any of examples 55 through 59, wherein the wireless channel is subject to License- Assisted Access.
  • example 61 the apparatus of any of examples 55 through 60, wherein the eNB comprises a Secondary Cell (SCell).
  • SCell Secondary Cell
  • example 62 the apparatus of any of examples 55 through 61 , further comprising: a transceiver circuitry to transmit transmissions of the first traffic type and transmissions of the second traffic type.
  • Example 63 provides an Evolved Node B (eNB) device comprising an application processor, a memory, one or more antenna ports, and an interface for allowing the application processor to communicate with another device, the eNB device including the apparatus of any of examples 55 through 62.
  • eNB Evolved Node B
  • Example 64 provides a method comprising: establishing, for an Evolved Node
  • eNB operable to communicate with a User Equipment (UE), a first energy detection (ED) threshold for transmissions of a first traffic type and a second ED threshold for transmissions of a second traffic type different from the first traffic type; identifying an ED level of a channel of the wireless network; transmitting a transmission of the first traffic type if the sensed ED level is less than a first ED threshold; and transmitting a transmission of the second traffic type if the sensed ED level is less than a second ED threshold different from the first ED threshold.
  • UE User Equipment
  • ED energy detection
  • second ED threshold for transmissions of a second traffic type different from the first traffic type
  • example 65 the method of example 64, wherein the first traffic type comprises Discovery Reference Signal transmissions.
  • example 66 the method of either of examples 64 or 65, wherein the first traffic type comprises Physical Downlink Shared Channel transmissions.
  • ED threshold is higher than the second ED threshold.
  • example 68 the method of example 67, wherein the first ED threshold is higher than the second ED threshold by a predetermined amount M.
  • example 69 the method of any of examples 64 through 68, wherein the wireless channel is subj ect to License- Assisted Access.
  • example 70 the method of any of examples 64 through 69, wherein the eNB comprises a Secondary Cell (SCell).
  • SCell Secondary Cell
  • Example 71 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 64 through 70.
  • Example 72 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: means for establishing a first energy detection (ED) threshold for transmissions of a first traffic type and a second ED threshold for transmissions of a second traffic type different from the first traffic type; means for identifying an ED level of a channel of the wireless network; means for transmitting a transmission of the first traffic type if the sensed ED level is less than a first ED threshold; and means for transmitting a transmission of the second traffic type if the sensed ED level is less than a second ED threshold different from the first ED threshold.
  • eNB Evolved Node B
  • UE User Equipment
  • example 73 the apparatus of example 72, wherein the first traffic type comprises Discovery Reference Signal transmissions.
  • example 74 the apparatus of either of examples 72 or 73, wherein the first traffic type comprises Physical Downlink Shared Channel transmissions.
  • example 76 the apparatus of example 75, wherein the first ED threshold is higher than the second ED threshold by a predetermined amount M.
  • example 77 the apparatus of any of examples 72 through 76, wherein the wireless channel is subject to License- Assisted Access.
  • example 78 the apparatus of any of examples 72 through 77, wherein the eNB comprises a Secondary Cell (SCell).
  • SCell Secondary Cell
  • Example 79 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of an Evolved Node B (eNB) to perform an operation comprising: establish a first energy detection (ED) threshold for transmissions of a first traffic type and a second ED threshold for transmissions of a second traffic type different from the first traffic type; identify an ED level of a channel of the wireless network; transmit a transmission of the first traffic type if the sensed ED level is less than a first ED threshold; and transmit a transmission of the second traffic type if the sensed ED level is less than a second ED threshold different from the first ED threshold.
  • ED energy detection
  • example 80 the machine readable storage media of example 79, wherein the first traffic type comprises Discovery Reference Signal transmissions.
  • example 81 the machine readable storage media of either of examples 79 or 80, wherein the first traffic type comprises Physical Downlink Shared Channel transmissions.
  • example 82 the machine readable storage media of any of examples 79 through 81, wherein the first ED threshold is higher than the second ED threshold.
  • example 83 the machine readable storage media of example 82, wherein the first ED threshold is higher than the second ED threshold by a predetermined amount M.
  • example 84 the machine readable storage media of any of examples 79 through 83, wherein the wireless channel is subject to License- Assisted Access.
  • SCell Secondary Cell
  • example 86 the apparatus of any of examples 1 through 7, 28 through 34, and 55 through 62, wherein the one or more processors comprise a baseband processor.
  • example 87 the apparatus of any of examples 1 through 7, 28 through 34, and 55 through 62, comprising a transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing transmissions, or decoding transmissions.
  • example 88 the apparatus of any of examples 1 through 7, 28 through 34, and 55 through 62, comprising a transceiver circuitry for generating transmissions and processing transmissions.

Landscapes

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

Abstract

L'invention concerne un appareil d'un nœud B évolué (eNB) apte à communiquer avec un équipement utilisateur (UE) sur un réseau sans fil. L'appareil peut comprendre une première circuiterie, une deuxième circuiterie et une troisième circuiterie. La première circuiterie peut être apte à détecter un canal du réseau sans fil sur lequel des transmissions de cellule secondaire (SCell) d'accès assisté par licence (LAA) sont réalisées. La deuxième circuiterie peut être apte à détecter une puissance reçue à partir du canal. La troisième circuiterie peut être apte à générer une transmission d'un premier type si la puissance détectée est inférieure à un premier seuil de détection d'énergie, et à générer une transmission d'un second type si la puissance détectée est inférieure à un second seuil de détection d'énergie. Le second type de transmission peut être différent du premier type de transmission, et le second seuil de détection d'énergie peut être différent du premier seuil de détection d'énergie. Le premier type peut être un signal de référence de découverte et le second type peut être d'autres transmissions.
PCT/US2016/050264 2015-11-04 2016-09-02 Procédé pour améliorer les performances de liaison montante dans un spectre non autorisé par l'intermédiaire d'une configuration de seuil de détection d'énergie WO2017078842A1 (fr)

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US10462801B2 (en) 2017-05-05 2019-10-29 At&T Intellectual Property I, L.P. Multi-antenna transmission protocols for high doppler conditions
US10986645B2 (en) 2017-05-05 2021-04-20 At&T Intellectual Property I, L.P. Multi-antenna transmission protocols for high doppler conditions
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CN112770324B (zh) * 2019-11-06 2023-02-07 维沃移动通信有限公司 共享信道占用时间的方法、终端设备和网络设备
CN112788607A (zh) * 2019-11-07 2021-05-11 维沃移动通信有限公司 共享信道占用时间cot的信息传输方法、通信设备
CN112788607B (zh) * 2019-11-07 2022-11-11 维沃移动通信有限公司 共享信道占用时间cot的信息传输方法、通信设备

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