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WO2018063420A1 - Attribution de ressources et gestion d'interférence destinées à une nouvelle radio de duplex à répartition dans le temps - Google Patents

Attribution de ressources et gestion d'interférence destinées à une nouvelle radio de duplex à répartition dans le temps Download PDF

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Publication number
WO2018063420A1
WO2018063420A1 PCT/US2016/059769 US2016059769W WO2018063420A1 WO 2018063420 A1 WO2018063420 A1 WO 2018063420A1 US 2016059769 W US2016059769 W US 2016059769W WO 2018063420 A1 WO2018063420 A1 WO 2018063420A1
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WIPO (PCT)
Prior art keywords
cell
subframe
circuitry
transmission
subframe position
Prior art date
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PCT/US2016/059769
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English (en)
Inventor
Qian Li
Guangjie Li
Geng Wu
Xiaoyun Wu
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Intel IP Corp
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Intel IP Corp
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • Next-generation wireless cellular communication systems based upon LTE and LTE-A systems are being developed, such as a fifth generation (5G) wireless system / 5G mobile networks system.
  • Next-generation wireless cellular communication systems may provide support for higher bandwidths in part by supporting New Radio (NR) features.
  • NR New Radio
  • Fig. 1 illustrates various Time Division Duplex (TDD) numerology and slot multiplexing scenarios, in accordance with some embodiments of the disclosure.
  • TDD Time Division Duplex
  • Fig. 2 illustrates a scenario of Downlink (DL) / Uplink (UL) misalignment between cells having different slot configurations with DL and UL parts in each slot, in accordance with some embodiments of the disclosure.
  • FIG. 3 illustrates a scenario of static and semi-static resource assignment, in accordance with some embodiments of the disclosure.
  • Fig. 4 illustrates scenarios of dynamic resource assignment, in accordance with some embodiments of the disclosure.
  • Fig. 5 illustrates a scenario of opportunistic resource assignment, in accordance with some embodiments of the disclosure.
  • Fig. 6 illustrates a scenario of hybrid opportunistic and contention-based resource assignment, 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 an eNB for resource assignment and interference handling in TDD New Radio (NR) Radio Access Networks (RANs), in accordance with some embodiments of the disclosure.
  • NR New Radio
  • RANs Radio Access Networks
  • Fig. 9 illustrates methods for an eNB for resource assignment and interference handling in TDD NR RANs, in accordance with some embodiments of the disclosure.
  • Fig. 10 illustrates example components of a UE device, in accordance with some embodiments of the disclosure.
  • Various wireless cellular communication systems have been implemented or are being proposed, including a 3rd Generation Partnership Project (3GPP) Universal Mobile Telecommunications System (UMTS), a 3GPP Long-Term Evolution (LTE) system, a 3GPP LTE-Advanced (LTE- A) system, and a 5th Generation wireless / 5th Generation mobile networks (5G) system.
  • 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
  • Next-generation wireless cellular communication systems may provide support for higher bandwidths in part by supporting various New Radio (NR) features.
  • NR New Radio
  • 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.
  • A, B, and/or C means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).
  • combinatorial logic and sequential logic discussed in the present disclosure may pertain both to physical structures (such as AND gates, OR gates, or XOR gates), or to synthesized or otherwise optimized collections of devices implementing the logical structures that are Boolean equivalents of the logic under discussion.
  • eNB may refer to a legacy 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.
  • UE User Equipment
  • 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
  • environmental interference may be relatively dynamic due to various factors.
  • One factor may be frequency reuse among radio access links (e.g., radio access links in macro cells, small cells, and/or sidelinks).
  • Another factor may be the use of dynamic or otherwise flexible TDD Downlink (DL) and Uplink (UL) configurations.
  • Yet another factor may be dynamics in numerology and multiplexing at subframe, slot, and/or mini-slot granularities.
  • Another factor may be the inclusion of both DL and UL channels in the same slot.
  • Some scenarios may be associated with static and/or semi-static TDD DL and
  • Fig. 1 illustrates various Time Division Duplex (TDD) numerology and slot multiplexing scenarios, in accordance with some embodiments of the disclosure.
  • TDD Time Division Duplex
  • first scenario 110 the two cells may be aligned in DL/UL configuration, and may accordingly transmit DL traffic and receive UL traffic at substantially the same time.
  • the two cells may also be aligned in numerology and/or slot configuration, and may accordingly have slots of similar length and numerology.
  • second scenario 120 the two cells may be aligned in DL/UL configuration.
  • the two cells may differ in numerology and/or slot configuration, and may accordingly have slots of differing length and/or numerology.
  • the two cells may be aligned in numerology and/or slot configuration. However, the two cells may differ in DL/UL configuration, and may accordingly transmit DL traffic and/or receive UL traffic at different times. In fourth scenario 140, the two cells may differ in DL/UL configuration. The two cells may also differ in numerology and/or slot configuration.
  • a UE and one or more peer UEs in direct connectivity may define a sidelink cell. Accordingly, the various TDD numerology and slot multiplexing scenarios of Fig. 1 may apply in scenarios having multiple sidelink cells.
  • FIG. 2 illustrates a scenario of Downlink (DL) / Uplink (UL) misalignment between cells having different slot configurations with DL and UL parts in each slot, in accordance with some embodiments of the disclosure.
  • a scenario 200 may comprise a first cell configuration 210 and a second cell configuration 220.
  • First cell configuration 210 may have a first numerology and slot
  • second cell configuration 220 may have a second numerology and slot configuration.
  • a slot may comprise both a period accommodating DL transmission a period accommodating UL transmission.
  • the second numerology and slot configuration may have a slot duration approximately one fourth the length of a slot duration of the first numerology and slot configuration.
  • TDD NR may accommodate such scenarios, and comparison with TDD LTE scenarios, TDD NR may accommodate dynamic interference environments.
  • Effective resource assignment schemes may advantageously facilitate proactive control of interference and maximization of frequency reuse.
  • Various applicable resource assignment schemes may comprise static and semi-static resource assignment, cooperative resource assignment, opportunistic resource access, contention-based resource acquisition, and/or various hybrids of those resource assignment schemes.
  • static or semi-static radio resource assignment radio resources may be assigned to various cells or links in a static or semi-dynamic manner.
  • static or semi-static radio resource assignment may be applied for radio access with stringent quality-of-service requirements, such as Ultra-Reliable and Low- Latency Communications.
  • Fig. 3 illustrates a scenario of static and semi-static resource assignment, in accordance with some embodiments of the disclosure.
  • a scenario 300 different sets of time-and-frequency resources may be assigned to radio resources for four cells.
  • the assignment may be semi-static in that they may be fixed or updated in a relatively long time scale (e.g., in units of tens of minutes, or in units of hours).
  • a static or semi-static resource assignment may be performed via cell planning or network control-plane configuration, or by cooperative negotiation among the cells.
  • a cell may be disposed to collect measurement reports on channel conditions and interference environment from its devices, then report the measurement information to a RAN control-plane entity and/or exchange the measurement information with neighbor cells.
  • a device may be disposed to perform intra-carrier and/or inter-carrier measurement, then report the measurement results to the Transmission Reception Point (TRP) of its serving cell.
  • TRP Transmission Reception Point
  • Fig. 4 illustrates a scenario of dynamic resource assignment, in accordance with some embodiments of the disclosure.
  • scenario 400 different sets of time-and- frequency resources may be assigned to radio resources for three cells.
  • the assignment may be dynamic in that they may be updated in a relatively short time scale (e.g., in units of milliseconds (ms)).
  • Resource assignment may be updated every subframe based on, for example, instantaneous UE reporting and instantaneous coordination among the cells.
  • Wideband sounding may advantageously promote instantaneous UE reporting on Channel State Information (CSI).
  • CSI Channel State Information
  • FIG. 5 illustrates scenarios of opportunistic resource assignment, in accordance with some embodiments of the disclosure.
  • a first opportunistic access scenario 500 may comprise a first frame structure 510 and a second frame structure 520
  • a second opportunistic access scenario 550 may comprise a third frame structure 560 and a fourth frame structure 570.
  • first frame structure 510 may comprise transmissions involving a first cell and transmitted across a set of frequency resources assigned to the first cell.
  • the first cell may thus be a primary cell.
  • First frame structure 510 may comprise a DL Control (DLC) channel 511, a DL Measurement or Reference Signal (MRS) channel 512, a UL MRS channel 514, a Data channel 516, and a UL Control (ULC) channel 518 within one or more slots of a first slot length.
  • DLC DL Control
  • MRS DL Measurement or Reference Signal
  • URC UL Control
  • Second frame structure 520 may comprise various transmissions involving a second cell and transmitted across the set of frequency resources assigned to the first cell. In doing so, the second cell may opportunistically access the set of frequency resources. Second frame structure 520 may comprise one or more transmission gaps 521, a Data channel 526, and a ULC channel 528 within one or more slots of a second slot length. The second slot length may be approximately one fourth the duration of the first slot length.
  • transmission gaps 521 introduced in the second cell may yield to transmissions involving the first cell.
  • the second cell may follow a Listen-Before-Talk (LBT) procedure.
  • LBT Listen-Before-Talk
  • the second cell may refrain from engaging in transmissions which may potentially interfere with transmissions involving the first cell.
  • the second cell may then sense the wireless medium over which the transmissions are transmitted in order to determine whether the second cell may engage in transmissions over the wireless medium without interfering with transmissions of the first cell.
  • an eNB may format, generate, and transmit DL MRS channel 512
  • a UE may format, generate, and transmit UL MRS channel 514.
  • the second cell may sense the wireless medium for the presence of DL MRS channel 512 and/or UL MRS channel 514. If the second cell does not detect DL MRS channel 512 or UL MRS channel 514, the wireless medium may be presumed to be available to the second cell, which may then
  • third frame structure 560 may also comprise transmissions involving a first cell and transmitted across a set of frequency resources assigned to the first cell.
  • the first cell may thus be a primary cell.
  • Third frame structure 560 may comprise a DLC channel 561, a DL MRS channel 562, a UL MRS channel 564, a Data channel 566, and a ULC channel 568 within one or more slots of a first slot length.
  • Fourth frame structure 570 may comprise various transmissions involving a second cell and transmitted across the set of frequency resources assigned to the first cell. In doing so, the second cell may opportunistically access the set of frequency resources. Fourth frame structure 570 may comprise one or more transmission gaps 571, a Data channel 576, and a ULC channel 578 within one or more slots of a second slot length. The second slot length may be approximately the same as the duration of the first slot length.
  • transmission gaps 571 introduced in the second cell may yield to transmissions involving the first cell, for example by following an LBT procedure.
  • an eNB may format, generate, and transmit DL MRS channel 562, and a UE may format, generate, and transmit UL MRS channel 564.
  • the second cell may sense the wireless medium for the presence of DL MRS channel 562 and/or UL MRS channel 564. If the second cell does not detect DL MRS channel 562 or UL MRS channel 564, the wireless medium may be presumed to be available to the second cell, which may then
  • opportunistic access may be applied which allows other radio links to opportunistically access the resource.
  • BroadBand (eMBB) radio links may have opportunistic access to resources assigned for Ultra Reliable Low Latency Communication (URLLC) services, and sidelinks may have opportunistic access to resources assigned for cellular links.
  • URLLC Ultra Reliable Low Latency Communication
  • opportunistic access may be more suitable for best-effort services.
  • a primary radio link may accordingly provide common reference signals for measurement, and may then advantageously achieve more accurate measurement and more efficient opportunistic access.
  • Opportunistic access performance better than LBT may advantageously be obtained by enabling various mechanisms.
  • An opportunistic access cell may benefit from knowledge of a primary cell's
  • Cell ID which may comprise a Cell ID associated with a synchronization signal (e.g., via Primary Synchronization Signal and/or Secondary Synchronization Signal), or a Cell ID carried by broadcast System Information (e.g., via Master Information Block and/or System Information Block).
  • An opportunistic access cell may also benefit from knowing a primary cell's subframe type and/or structure (e.g., information such as subframe type, subframe duration, and/or location of the DL and UL parts of the subframe). This may be achieved by signaling subframe type and structure information as cell-specific common information in a DLC channel, or by a resource-specific reference signal, for example.
  • a primary cell may benefit from having DL and/or UL measurement channel or reference signal in each subframe.
  • DL and/or UL measurement channel and reference signals may be advantageously transmitted toward the beginning of a subframe.
  • Contention-based resource access can be applied for various deployment scenarios in which multiple radio links may have equal rights to use a given radio resource.
  • contention-based resource assignment may be more scalable and/or more feasible for deployment scenarios lacking good cell planning and inter-cell coordination.
  • Opportunistic resource assignment and contention-based resource assignment may accordingly be jointly applied to achieve autonomous resource assignment.
  • links may opportunistically access a resource that is primary assigned for other radio links.
  • links may acquire radio resources that multiple links may have equal rights to use.
  • FIG. 6 illustrates a scenario of hybrid opportunistic and contention-based resource assignment, in accordance with some embodiments of the disclosure.
  • a hybrid opportunistic and contention-based resource assignment scenario 600 may comprise a first frame structure 610, a second frame structure 620, and a third frame structure 630.
  • first frame structure 610 may comprise transmissions involving a first cell and transmitted across a set of frequency resources assigned to the first cell.
  • the first cell may thus be a primary cell.
  • First frame structure 610 may comprise a DLC channel 611, a DL MRS channel 612, a UL MRS channel 614, a Data channel 616, and a ULC channel 618 within one or more slots of a first slot length.
  • Second frame structure 620 may comprise various transmissions involving a second cell and transmitted across the set of frequency resources assigned to the first cell. In doing so, the second cell may opportunistically access the set of frequency resources. Second frame structure 620 may comprise one or more transmission gaps 621 , a Data channel 626, and a ULC channel 628 within one or more slots of a second slot length. The second slot length may be approximately one fourth the duration of the first slot length.
  • Third frame structure 630 may comprise various transmissions involving a third cell and transmitted across the set of frequency resources assigned to the first cell. In doing so, the third cell may opportunistically access the set of frequency resources. Third frame structure 630 may comprise one or more transmission gaps 631 , a Data channel 636, and a ULC channel 638 within one or more slots of a third slot length. The third slot length may be approximately one fourth the duration of the first slot length.
  • Transmission gaps 621 and 631 may yield to transmissions involving the first cell.
  • the second cell and third cell may follow LBT procedures to refrain from transmitting over a wireless medium, then sense the wireless medium to determine whether the second cell and third cell may engage in transmissions over the wireless medium without interfering with transmissions of the first cell. Subsequently, if the LBT procedures followed by the second cell and the third cell indicate would permit the second cell and third cell to transmit over the wireless medium, the second cell and third cell may perform an autonomous contention resolution policy to determine which cell among them may transmit over the wireless medium.
  • the performance of contention-based access may be improved if some coordination can be achieved among the links.
  • a hybrid scheduled and contention-based resource assignment approach may be advantageous.
  • Such deployment scenarios may comprise multiple small cells opportunistically accessing resources primarily assigned to a macro cell.
  • small cells may content among themselves to use an opportunistically-obtained resource.
  • Proper resource assignment may minimize strong interference.
  • Remaining interference may be managed by proper interference handling schemes.
  • Such interference handling schemes may include proactive rate adaption and power control at transmitter, and/or advanced interference cancellation schemes at a receiver.
  • rate adaption and power control may be applied to proactively avoid link failure due to excessive interference.
  • advanced interference cancellation schemes may be applied to minimize effects of interference.
  • coordinated interference cancellation and joint receiver processing may be applied.
  • 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 depicts 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 and 10 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
  • 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 an eNB for resource assignment and interference handling in TDD New Radio (NR) Radio Access Networks (RANs), in accordance with some embodiments of the disclosure.
  • an eNB may include various hardware processing circuitries discussed below (such as hardware processing circuitry 800 of Fig. 8), which may in turn comprise logic devices and/or circuitry operable to perform various operations.
  • eNB 710 (or various elements or components therein, such as hardware processing circuitry 720, 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 716 and/or one or more other processors which eNB 710 may comprise
  • memory 718 and/or other elements or components of eNB 710 (which may include hardware processing circuitry 720) 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 716 (and/or one or more other processors which eNB 710 may comprise) may be a baseband processor.
  • an apparatus of eNB 710 (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 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 communication channel 750).
  • Antenna ports 805 may be coupled to one or more antennas 807 (which may be antennas 705).
  • 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 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 805 and antennas 807 may be operable to provide transmissions from eNB 710 to wireless communication channel 750 (and from there to UE 730, or to another UE).
  • antennas 807 and antenna ports 805 may be operable to provide transmissions from a wireless communication channel 750 (and beyond that, from UE 730, or another UE) to eNB 710.
  • hardware processing circuitry 800 may comprise a first circuitry 810, a second circuitry 820, a third circuitry 830, and/or a fourth circuitry 840.
  • First circuitry 810 may be operable to record at least one of: a DL subframe position for a first cell of the wireless network, or an UL subframe position for the first cell.
  • Second circuitry 820 may be operable to decode, within a subframe for the first cell, a transmission comprising at least one of: a DL measurement channel at the DL subframe position for the first cell, a DL Reference Signal at the DL subframe position for the first cell, a UL measurement channel at the UL subframe position for the first cell, or a UL Reference Signal at the UL subframe position for the first cell.
  • Second circuitry 820 may provide information regarding the decoded transmission to third circuitry 830 over an interface 825.
  • Third circuitry 830 may be operable to determine an interference level of the first cell based on the decoded transmission.
  • Third circuitry 830 may provide an indicator of interference level to fourth circuitry 840 over an interface 835.
  • Fourth circuitry 840 may be operable to allocate a data channel in a subframe for a second cell of the wireless network if the interference level is below a predetermined threshold.
  • the transmission may be transmitted by a primary cell over a set of TDD duplex frequency resources.
  • first circuitry 810 may be operable to record a Cell ID and subframe duration for the first cell.
  • second circuitry 820 may be operable to decode the Cell ID from one of: a Synchronization Signal, or a broadcast System Information transmission.
  • Second circuitry 820 may be operable to provide the Cell ID to first circuitry 810 over an interface 827.
  • the second cell may be a neighbor cell of the first cell.
  • the decoding may be part of a listen-before-talk procedure encompassing at least one of: the DL subframe position for the first cell, and the UL subframe position for the first cell.
  • second circuitry 820 may be operable to detect an additional transmission for the first cell carrying one of: a DLC channel for the first cell, or a cell-specific resource signal. In some embodiments, the second circuitry 820 may also be operable to decode, from the additional transmission, at least one of: a Cell ID, a DL-or-UL subframe type indicator, a subframe duration, the DL subframe position for the first cell, or the UL subframe position for the first cell. For some embodiments, second circuitry 820 may be operable to decode a Cell ID from a cell-specific reference signal for the first cell.
  • a subframe duration for the first cell may be an integer multiple of a subframe duration for the second cell.
  • a subframe duration for the first cell may be substantially the same as a subframe duration for the second cell.
  • third circuitry 830 may be operable to perform an autonomous contention resolution policy with a third cell.
  • first circuitry 810 second circuitry 820, third circuitry
  • first circuitry 810, second circuitry 820, third circuitry 830, and/or fourth circuitry 840 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • Fig. 9 illustrates methods for an eNB for resource assignment and interference handling in TDD NR RANs, in accordance with some embodiments of the disclosure.
  • various methods that may relate to eNB 710 and hardware processing circuitry 720 are discussed below.
  • the actions in method 900 of Fig. 9 are shown in a particular order, the order of the actions can be modified.
  • the illustrated embodiments of the disclosure are discussed below.
  • embodiments can be performed in a different order, and some actions may be performed in parallel. Some of the actions and/or operations listed in Fig. 9 are optional in accordance with certain embodiments. The numbering of the actions presented is for the sake of clarity and is not intended to prescribe an order of operations in which the various actions must occur. Additionally, operations from the various flows may be utilized in a variety of combinations.
  • machine readable storage media may have executable instructions that, when executed, cause eNB 710 and/or hardware processing circuitry 720 to perform an operation comprising the methods of Fig. 9.
  • Such machine readable storage media may include any of a variety of storage media, like magnetic storage media (e.g., magnetic tapes or magnetic disks), optical storage media (e.g., optical discs), electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash- memory-based storage media), or any other tangible storage media or non-transitory storage media.
  • an apparatus may comprise means for performing various actions and/or operations of the methods of Fig. 9.
  • a method 900 may comprise a recording 910, a decoding
  • a determining 920 determines a 920, an allocating 925, a recording 930, a decoding 940, a detecting 950, a decoding 955, a decoding 960, and/or a performing 970.
  • recording 910 at least one of a DL subframe position for a first cell of the wireless network, or an UL subframe position for the first cell may be recorded.
  • a transmission may be decoded within a subframe for the first cell, the transmission comprising at least one of: a DL measurement channel at the DL subframe position for the first cell, a DL Reference Signal at the DL subframe position for the first cell, a UL measurement channel at the UL subframe position for the first cell, or a UL Reference Signal at the UL subframe position for the first cell.
  • an interference level of the first cell may be determined based on the decoded transmission.
  • a data channel may be allocated in a subframe for a second cell of the wireless network if the interference level is below a predetermined threshold.
  • the transmission may be transmitted by a primary cell over a set of TDD duplex frequency resources.
  • a Cell ID and subframe duration may be recorded for the first cell.
  • the Cell ID may be decoded from one of: a Synchronization Signal, or a broadcast System Information transmission.
  • the second cell may be a neighbor cell of the first cell.
  • the decoding may be part of a listen-before-talk procedure encompassing at least one of: the DL subframe position for the first cell, and the UL subframe position for the first cell.
  • an additional transmission for the first cell may be detected, the additional transmission carrying one of: a DLC channel for the first cell, or a cell-specific resource signal.
  • decoding 955 at least one of a Cell ID, a DL-or-UL subframe type indicator, a subframe duration, the DL subframe position for the first cell, or the UL subframe position for the first cell may be decoded from the additional transmission.
  • a Cell ID may be decoded from a cell-specific reference signal for the first cell.
  • a subframe duration for the first cell may be an integer multiple of a subframe duration for the second cell.
  • a subframe duration for the first cell may be substantially the same as a subframe duration for the second cell.
  • an autonomous contention resolution policy may be performed with a third cell.
  • a UE device 1000 may include application circuitry 1002, baseband circuitry 1004, Radio Frequency (RF) circuitry 1006, front-end module (FEM) circuitry 1008, a low-power wake-up receiver (LP-WUR), and one or more antennas 1010, coupled together at least as shown.
  • RF Radio Frequency
  • FEM front-end module
  • LP-WUR low-power wake-up receiver
  • the UE device 1000 may include additional elements such as, for example, memory /storage, display, camera, sensor, and/or input/output (I/O) interface.
  • the application circuitry 1002 may include one or more application processors.
  • the application circuitry 1002 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the processor(s) may include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc.).
  • the processors may be coupled with and/or may include memory /storage and may be configured to execute instructions stored in the memory /storage to enable various applications and/or operating systems to run on the system.
  • the baseband circuitry 1004 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the baseband circuitry 1004 may include one or more baseband processors and/or control logic to process baseband signals received from a receive signal path of the RF circuitry 1006 and to generate baseband signals for a transmit signal path of the RF circuitry 1006.
  • Baseband processing circuity 1004 may interface with the application circuitry 1002 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 1006.
  • the baseband circuitry 1004 may include a second generation (2G) baseband processor 1004A, third generation (3G) baseband processor 1004B, fourth generation (4G) baseband processor 1004C, and/or other baseband processor(s) 1004D for other existing generations, generations in development or to be developed in the future (e.g., fifth generation (5G), 6G, etc.).
  • the baseband circuitry 1004 e.g., one or more of baseband processors 1004A-D
  • the radio control functions may include, but are not limited to, signal modulation/demodulation, encoding/decoding, radio frequency shifting, etc.
  • modulation/demodulation circuitry of the baseband circuitry 1004 may include Fast-Fourier Transform (FFT), precoding, and/or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • encoding/decoding circuitry of the baseband circuitry 1004 may include convolution, tail-biting convolution, turbo, Viterbi, and/or Low Density Parity Check (LDPC) encoder/decoder functionality.
  • LDPC Low Density Parity Check
  • the baseband circuitry 1004 may include elements of a protocol stack such as, for example, elements of an EUTRAN protocol including, for example, physical (PHY), media access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), and/or RRC elements.
  • a central processing unit (CPU) 1004E of the baseband circuitry 1004 may be configured to run elements of the protocol stack for signaling of the PHY, MAC, RLC, PDCP and/or RRC layers.
  • the baseband circuitry may include one or more audio digital signal processor(s) (DSP) 1004F.
  • the audio DSP(s) 1004F may be include elements for compression/decompression and echo cancellation and may include other suitable processing elements in other embodiments.
  • Components of the baseband circuitry may be suitably combined in a single chip, a single chipset, or disposed on a same circuit board in some embodiments.
  • some or all of the constituent components of the baseband circuitry 1004 and the application circuitry 1002 may be implemented together such as, for example, on a system on a chip (SOC).
  • SOC system on a chip
  • the baseband circuitry 1004 may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry 1004 may support communication with an evolved universal terrestrial radio access network (EUTRAN) and/or other wireless metropolitan area networks (WMAN), a wireless local area network (WLAN), a wireless personal area network (WPAN).
  • EUTRAN evolved universal terrestrial radio access network
  • WMAN wireless metropolitan area networks
  • WLAN wireless local area network
  • WPAN wireless personal area network
  • multi-mode baseband circuitry Embodiments in which the baseband circuitry 1004 is configured to support radio communications of more than one wireless protocol.
  • RF circuitry 1006 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry 1006 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • RF circuitry 1006 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 1008 and provide baseband signals to the baseband circuitry 1004.
  • RF circuitry 1006 may also include a transmit signal path which may include circuitry to up- convert baseband signals provided by the baseband circuitry 1004 and provide RF output signals to the FEM circuitry 1008 for transmission.
  • the RF circuitry 1006 may include a receive signal path and a transmit signal path.
  • the receive signal path of the RF circuitry 1006 may include mixer circuitry 1006 A, amplifier circuitry 1006B and filter circuitry 1006C.
  • the transmit signal path of the RF circuitry 1006 may include filter circuitry 1006C and mixer circuitry 1006 A.
  • RF circuitry 1006 may also include synthesizer circuitry 1006D for synthesizing a frequency for use by the mixer circuitry 1006A of the receive signal path and the transmit signal path.
  • the mixer circuitry 1006 A of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 1008 based on the synthesized frequency provided by synthesizer circuitry 1006D.
  • the amplifier circuitry 1006B may be configured to amplify the down-converted signals and the filter circuitry 1006C may be a low-pass filter (LPF) or band-pass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals.
  • Output baseband signals may be provided to the baseband circuitry 1004 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 1006A of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1006A of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 1006D to generate RF output signals for the FEM circuitry 1008.
  • the baseband signals may be provided by the baseband circuitry 1004 and may be filtered by filter circuitry 1006C.
  • the filter circuitry 1006C may include a low-pass filter (LPF), although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1006A of the receive signal path and the mixer circuitry 1006A of the transmit signal path may include two or more mixers and may be arranged for quadrature down-conversion and/or up-conversion respectively.
  • the mixer circuitry 1006A of the receive signal path and the mixer circuitry 1006A of the transmit signal path may include two or more mixers and may be arranged for image rejection (e.g., Hartley image rejection).
  • the mixer circuitry 1006 A of the receive signal path and the mixer circuitry 1006 A may be arranged for direct down-conversion and/or direct up-conversion, respectively.
  • the mixer circuitry 1006 A of the receive signal path and the mixer circuitry 1006A of the transmit signal path may be configured for super-heterodyne operation.
  • the output baseband signals and the input baseband signals may be analog baseband signals, although the scope of the embodiments is not limited in this respect.
  • the output baseband signals and the input baseband signals may be digital baseband signals.
  • the RF circuitry 1006 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 1004 may include a digital baseband interface to communicate with the RF circuitry 1006.
  • ADC analog-to-digital converter
  • DAC digital-to-analog converter
  • a separate radio IC circuitry may be provided for processing signals for each spectrum, although the scope of the embodiments is not limited in this respect.
  • the synthesizer circuitry 1006D may be a fractional -N synthesizer or a fractional N/N+l synthesizer, although the scope of the embodiments is not limited in this respect as other types of frequency synthesizers may be suitable.
  • synthesizer circuitry 1006D may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 1006D may be configured to synthesize an output frequency for use by the mixer circuitry 1006A of the RF circuitry 1006 based on a frequency input and a divider control input.
  • the synthesizer circuitry 1006D may be a fractional N/N+l synthesizer.
  • frequency input may be provided by a voltage controlled oscillator (VCO), although that is not a requirement.
  • VCO voltage controlled oscillator
  • Divider control input may be provided by either the baseband circuitry 1004 or the applications processor 1002 depending on the desired output frequency.
  • a divider control input (e.g., N) may be determined from a look-up table based on a channel indicated by the applications processor 1002.
  • Synthesizer circuitry 1006D of the RF circuitry 1006 may include a divider, a delay-locked loop (DLL), a multiplexer and a phase accumulator.
  • the divider may be a dual modulus divider (DMD) and the phase accumulator may be a digital phase accumulator (DP A).
  • the DMD may be configured to divide the input signal by either N or N+l (e.g., based on a carry out) to provide a fractional division ratio.
  • the DLL may include a set of cascaded, tunable, delay elements, a phase detector, a charge pump and a D-type flip-flop.
  • the delay elements may be configured to break a VCO period up into Nd equal packets of phase, where Nd is the number of delay elements in the delay line.
  • Nd is the number of delay elements in the delay line.
  • synthesizer circuitry 1006D may be configured to generate a carrier frequency as the output frequency, while in other embodiments, the output frequency may be a multiple of the carrier frequency (e.g., twice the carrier frequency, four times the carrier frequency) and used in conjunction with quadrature generator and divider circuitry to generate multiple signals at the carrier frequency with multiple different phases with respect to each other.
  • the output frequency may be a LO frequency (fLO).
  • the RF circuitry 1006 may include an IQ/polar converter.
  • FEM circuitry 1008 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 1010, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 1006 for further processing.
  • FEM circuitry 1008 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 1006 for transmission by one or more of the one or more antennas 1010.
  • the FEM circuitry 1008 may include a TX/RX switch to switch between transmit mode and receive mode operation.
  • the FEM circuitry may include a receive signal path and a transmit signal path.
  • the receive signal path of the FEM circuitry may include a low-noise amplifier (LNA) to amplify received RF signals and provide the amplified received RF signals as an output (e.g., to the RF circuitry 1006).
  • LNA low-noise amplifier
  • the transmit signal path of the FEM circuitry 1008 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 1006), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 1010.
  • PA power amplifier
  • the UE 1000 comprises a plurality of power saving mechanisms. If the UE 1000 is in an RRC_Connected state, where it is still connected to the eNB as it expects to receive traffic shortly, then it may enter a state known as Discontinuous Reception Mode (DRX) after a period of inactivity. During this state, the device may power down for brief intervals of time and thus save power. [0020] If there is no data traffic activity for an extended period of time, then the UE
  • DRX Discontinuous Reception Mode
  • RRC Idle state where it disconnects from the network and does not perform operations such as channel quality feedback, handover, etc.
  • the UE 1000 goes into a very low power state and it performs paging where again it periodically wakes up to listen to the network and then powers down again. Since the device might not receive data in this state, in order to receive data, it should transition back to RRC Connected state.
  • An additional power saving mode may allow a device to be unavailable to the network for periods longer than a paging interval (ranging from seconds to a few hours). During this time, the device is totally unreachable to the network and may power down completely. Any data sent during this time incurs a large delay and it is assumed the delay is acceptable.
  • an eNB may include components substantially similar to one or more of the example components of UE device 1000 described herein.
  • 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: record at least one of: a Downlink (DL) subframe position for a first cell of the wireless network, or an Uplink (UL) subframe position for the first cell; decode, within a subframe for the first cell, a transmission comprising at least one of: a DL measurement channel at the DL subframe position for the first cell, a DL Reference Signal at the DL subframe position for the first cell, a UL measurement channel at the UL subframe position for the first cell, or a UL Reference Signal at the UL subframe position for the first cell; determine an interference level of the first cell based on the decoded transmission; and allocate a data channel in a subframe for a second cell of the wireless network if the interference level is below a predetermined threshold.
  • DL Downlink
  • UL Uplink
  • example 2 the apparatus of example 1, wherein the transmission is transmitted by a primary cell over a set of TDD duplex frequency resources.
  • example 3 the apparatus of either of examples 1 or 2, wherein the one or more processors are to: record a Cell Identification number (Cell ID) and subframe duration for the first cell.
  • Cell ID Cell Identification number
  • example 4 the apparatus of example 3, wherein the one or more processors are to: decode the Cell ID from one of: a Synchronization Signal, or a broadcast System Information transmission.
  • example 5 the apparatus of any of examples 1 through 4, wherein the second cell is a neighbor cell of the first cell.
  • example 6 the apparatus of any of examples 1 through 5, wherein the decoding is part of a listen-before-talk procedure encompassing at least one of: the DL subframe position for the first cell, and the UL subframe position for the first cell.
  • example 7 the apparatus of any of examples 1 through 6, wherein the one or more processors are to: detect an additional transmission for the first cell carrying one of: a DL Control (DLC) channel for the first cell, or a cell-specific resource signal; and decode, from the additional transmission, at least one of: a Cell Identification number (Cell ID), a DL-or-UL subframe type indicator, a subframe duration, the DL subframe position for the first cell, or the UL subframe position for the first cell.
  • DLC DL Control
  • example 8 the apparatus of any of examples 1 through 7, wherein the one or more processors are to: decode a Cell Identification number (Cell ID) from a cell-specific reference signal for the first cell.
  • Cell ID Cell Identification number
  • example 9 the apparatus of any of examples 1 through 8, wherein a subframe duration for the first cell is an integer multiple of a subframe duration for the second cell.
  • example 10 the apparatus of any of examples 1 through 9, wherein a subframe duration for the first cell is substantially the same as a subframe duration for the second cell.
  • example 11 the apparatus of any of examples 1 through 10, wherein the one or more processors are to: perform an autonomous contention resolution policy with a third cell.
  • Example 12 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 1 1.
  • eNB Evolved Node B
  • Example 13 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 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: record at least one of: a Downlink (DL) subframe position for a first cell of the wireless network, or an Uplink (UL) subframe position for the first cell; decode, within a subframe for the first cell, a transmission comprising at least one of: a DL measurement channel at the DL subframe position for the first cell, a DL Reference Signal at the DL subframe position for the first cell, a UL measurement channel at the UL subframe position for the first cell, or a UL Reference Signal at the UL subframe position for the first cell; determine an interference level of the first cell based on the decoded transmission; and
  • example 14 the device of example 13, wherein the transmission is transmitted by a primary cell over a set of TDD duplex frequency resources.
  • example 15 the device of either of examples 13 or 14, wherein the one or more processors are to: record a Cell Identification number (Cell ID) and subframe duration for the first cell.
  • Cell ID Cell Identification number
  • subframe duration for the first cell.
  • example 17 the device of any of examples 13 through 16, wherein the second cell is a neighbor cell of the first cell.
  • example 18 the device of any of examples 13 through 17, wherein the decoding is part of a listen-before-talk procedure encompassing at least one of: the DL subframe position for the first cell, and the UL subframe position for the first cell.
  • DLC DL Control
  • example 20 the device of any of examples 13 through 19, wherein the one or more processors are to: decode a Cell Identification number (Cell ID) from a cell-specific reference signal for the first cell.
  • Cell ID Cell Identification number
  • a subframe duration for the first cell is an integer multiple of a subframe duration for the second cell.
  • a subframe duration for the first cell is substantially the same as a subframe duration for the second cell.
  • example 23 the device of any of examples 13 through 22, wherein the one or more processors are to: perform an autonomous contention resolution policy with a third cell.
  • Example 24 provides a method comprising: recording at least one of: a
  • DL subframe position for a first cell of the wireless network, or an Uplink (UL) subframe position for the first cell; decoding, within a subframe for the first cell, a transmission comprising at least one of: a DL measurement channel at the DL subframe position for the first cell, a DL Reference Signal at the DL subframe position for the first cell, a UL measurement channel at the UL subframe position for the first cell, or a UL Reference Signal at the UL subframe position for the first cell; determining an interference level of the first cell based on the decoded transmission; and allocating a data channel in a subframe for a second cell of the wireless network if the interference level is below a predetermined threshold.
  • example 25 the method of example 24, wherein the transmission is transmitted by a primary cell over a set of TDD duplex frequency resources.
  • Cell ID Cell Identification number
  • example 27 the method of example 26, comprising: decoding the Cell ID from one of: a Synchronization Signal, or a broadcast System Information transmission.
  • example 28 the method of any of examples 24 through 27, wherein the second cell is a neighbor cell of the first cell.
  • example 29 the method of any of examples 24 through 28, wherein the decoding is part of a listen-before-talk procedure encompassing at least one of: the DL subframe position for the first cell, and the UL subframe position for the first cell.
  • example 30 the method of any of examples 24 through 29, comprising: detecting an additional transmission for the first cell carrying one of: a DL Control (DLC) channel for the first cell, or a cell-specific resource signal; and decoding, from the additional transmission, at least one of: a Cell Identification number (Cell ID), a DL-or-UL subframe type indicator, a subframe duration, the DL subframe position for the first cell, or the UL subframe position for the first cell.
  • DLC DL Control
  • Cell ID Cell Identification number
  • a DL-or-UL subframe type indicator a subframe duration, the DL subframe position for the first cell, or the UL subframe position for the first cell.
  • example 32 the method of any of examples 24 through 31, wherein a subframe duration for the first cell is an integer multiple of a subframe duration for the second cell.
  • example 33 the method of any of examples 24 through 32, wherein a subframe duration for the first cell is substantially the same as a subframe duration for the second cell.
  • example 34 the method of any of examples 24 through 33, comprising: performing an autonomous contention resolution policy with a third cell.
  • Example 35 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 24 through 34.
  • Example 36 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network comprising: means for recording at least one of: a Downlink (DL) subframe position for a first cell of the wireless network, or an Uplink (UL) subframe position for the first cell; means for decoding, within a subframe for the first cell, a transmission comprising at least one of: a DL measurement channel at the DL subframe position for the first cell, a DL Reference Signal at the DL subframe position for the first cell, a UL measurement channel at the UL subframe position for the first cell, or a UL Reference Signal at the UL subframe position for the first cell; means for determining an interference level of the first cell based on the decoded
  • example 37 the apparatus of example 36, wherein the transmission is transmitted by a primary cell over a set of TDD duplex frequency resources.
  • example 38 the apparatus of either of examples 36 or 37, comprising: means for recording a Cell Identification number (Cell ID) and subframe duration for the first cell.
  • Cell ID Cell Identification number
  • subframe duration for the first cell.
  • example 39 the apparatus of example 38, comprising: means for decoding the Cell ID from one of: a Synchronization Signal, or a broadcast System Information transmission.
  • the apparatus of any of examples 36 through 39 wherein the second cell is a neighbor cell of the first cell.
  • example 41 the apparatus of any of examples 36 through 40, wherein the decoding is part of a listen-before-talk procedure encompassing at least one of: the DL subframe position for the first cell, and the UL subframe position for the first cell.
  • the apparatus of any of examples 36 through 41 comprising: means for detecting an additional transmission for the first cell carrying one of: a DL Control (DLC) channel for the first cell, or a cell-specific resource signal; and means for decoding, from the additional transmission, at least one of: a Cell Identification number (Cell ID), a DL-or-UL subframe type indicator, a subframe duration, the DL subframe position for the first cell, or the UL subframe position for the first cell.
  • DLC DL Control
  • example 43 the apparatus of any of examples 36 through 42, comprising: means for decoding a Cell Identification number (Cell ID) from a cell-specific reference signal for the first cell.
  • Cell ID Cell Identification number
  • example 44 the apparatus of any of examples 36 through 43, wherein a subframe duration for the first cell is an integer multiple of a subframe duration for the second cell.
  • example 45 the apparatus of any of examples 36 through 44, wherein a subframe duration for the first cell is substantially the same as a subframe duration for the second cell.
  • example 46 the apparatus of any of examples 36 through 45, comprising: means for performing an autonomous contention resolution policy with a third cell.
  • Example 47 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: record at least one of: a Downlink (DL) subframe position for a first cell of the wireless network, or an Uplink (UL) subframe position for the first cell; decode, within a subframe for the first cell, a transmission comprising at least one of: a DL measurement channel at the DL subframe position for the first cell, a DL Reference Signal at the DL subframe position for the first cell, a UL measurement channel at the UL subframe position for the first cell, or a UL Reference Signal at the UL subframe position for the first cell; determine an interference level of the first cell based on the decoded transmission; and allocate a data channel in a subframe for a second cell of the wireless network if the interference level is below a predetermined threshold.
  • eNB Evolved Node B
  • the operation comprising: record a Cell Identification number (Cell ID) and subframe duration for the first cell.
  • Cell ID Cell Identification number
  • the machine readable storage media of example 49 the operation comprising: decode the Cell ID from one of: a Synchronization Signal, or a broadcast System Information transmission.
  • example 51 the machine readable storage media of any of examples 47 through 50, wherein the second cell is a neighbor cell of the first cell.
  • example 52 the machine readable storage media of any of examples 47 through 51, wherein the decoding is part of a listen-bef ore-talk procedure encompassing at least one of: the DL subframe position for the first cell, and the UL subframe position for the first cell.
  • the machine readable storage media of any of examples 47 through 52 the operation comprising: detect an additional transmission for the first cell carrying one of: a DL Control (DLC) channel for the first cell, or a cell-specific resource signal; and decode, from the additional transmission, at least one of: a Cell Identification number (Cell ID), a DL-or-UL subframe type indicator, a subframe duration, the DL subframe position for the first cell, or the UL subframe position for the first cell.
  • DLC DL Control
  • example 54 the machine readable storage media of any of examples 47 through 53, the operation comprising: decode a Cell Identification number (Cell ID) from a cell-specific reference signal for the first cell.
  • Cell ID Cell Identification number
  • example 55 the machine readable storage media of any of examples 47 through 54, wherein a subframe duration for the first cell is an integer multiple of a subframe duration for the second cell.
  • example 56 the machine readable storage media of any of examples 47 through 55, wherein a subframe duration for the first cell is substantially the same as a subframe duration for the second cell.
  • example 57 the machine readable storage media of any of examples 47 through 56, the operation comprising: perform an autonomous contention resolution policy with a third cell.
  • example 59 the apparatus of any of examples 1 through 1 1, comprising a transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing transmissions, or decoding transmissions.
  • example 60 the apparatus of any of examples 1 through 1 1, comprising a transceiver circuitry for generating transmissions and processing transmissions.

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

Abstract

La présente invention concerne un appareil d'un nœud B évolué (eNB). 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 de manière à enregistrer une position de sous-trame de liaison descendante et/ou une position de sous-trame de liaison montante pour une première cellule du réseau sans fil. Le deuxième ensemble de circuits peut être utilisable de manière à décoder, à l'intérieur d'une sous-trame pour la première cellule, une transmission comprenant un canal de mesure de liaison descendante et/ou un signal de référence de liaison descendante et/ou un canal de mesure de liaison montante et/ou un signal de référence de liaison montante. Le troisième ensemble de circuits peut être utilisable de manière à déterminer un niveau d'interférence de la première cellule sur la base de la transmission décodée. Le quatrième ensemble de circuits peut être utilisable de manière à attribuer un canal de données dans une sous-trame pour une seconde cellule du réseau sans fil si le niveau d'interférence est inférieur à un seuil prédéterminé.
PCT/US2016/059769 2016-09-30 2016-10-31 Attribution de ressources et gestion d'interférence destinées à une nouvelle radio de duplex à répartition dans le temps Ceased WO2018063420A1 (fr)

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CN110149140A (zh) * 2019-05-17 2019-08-20 哈尔滨工业大学（深圳） 卫星机会式网络的转发方法

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CN110149140A (zh) * 2019-05-17 2019-08-20 哈尔滨工业大学（深圳） 卫星机会式网络的转发方法
CN110149140B (zh) * 2019-05-17 2021-09-14 哈尔滨工业大学（深圳） 卫星机会式网络的转发方法

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