WO2018022782A1 - Signalisation de commande pour formation de faisceau de transmission d'un équipement d'utilisateur - Google Patents

Signalisation de commande pour formation de faisceau de transmission d'un équipement d'utilisateur Download PDF

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Publication number
WO2018022782A1
WO2018022782A1 PCT/US2017/043998 US2017043998W WO2018022782A1 WO 2018022782 A1 WO2018022782 A1 WO 2018022782A1 US 2017043998 W US2017043998 W US 2017043998W WO 2018022782 A1 WO2018022782 A1 WO 2018022782A1
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WIPO (PCT)
Prior art keywords
transmission
index
circuitry
prach
enb
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PCT/US2017/043998
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English (en)
Inventor
Yushu Zhang
Gang Xiong
Yuan Zhu
Hua Li
Wenting CHANG
Seunghee Han
Gregory Morozov
Alexei Davydov
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Intel IP Corporation
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Priority to CN201780039895.1A priority Critical patent/CN109417822B/zh
Publication of WO2018022782A1 publication Critical patent/WO2018022782A1/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
    • H04W74/0833—Random access procedures, e.g. with 4-step access

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 beamforming.
  • Fig. 1 illustrates User Equipment (UE) beamforming during initial access, in accordance with some embodiments of the disclosure.
  • UE User Equipment
  • FIG. 2 illustrates a scenario of procedures for initial access, in accordance with some embodiments of the disclosure.
  • Fig. 3 illustrates a Random Access Response (RAR) with UE Transmit (Tx) beam index or Physical Random Access Channel (PRACH) / 5G PRACH (xPRACH) slot index, in accordance with some embodiments of the disclosure.
  • RAR Random Access Response
  • Tx UE Transmit
  • PRACH Physical Random Access Channel
  • xPRACH 5G PRACH
  • Fig. 4 illustrates a scenario of procedures for initial access, in accordance with some embodiments of the disclosure.
  • FIG. 5 illustrates a scenario of procedures for initial access, in accordance with some embodiments of the disclosure.
  • Fig. 6 illustrates an Evolved Node B (eNB) and a UE, in accordance with some embodiments of the disclosure.
  • eNB Evolved Node B
  • FIG. 7 illustrates hardware processing circuitries for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some embodiments of the disclosure.
  • FIG. 8 illustrates hardware processing circuitries for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some embodiments of the disclosure.
  • Fig. 9 illustrates methods for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some embodiments of the disclosure.
  • Fig. 10 illustrates methods for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some embodiments of the disclosure.
  • FIG. 11 illustrates example components of a device, in accordance with some embodiments of the disclosure.
  • Fig. 12 illustrates example interfaces of baseband circuitry, 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 system 5th Generation new radio
  • Next-generation wireless cellular communication systems may provide support for higher bandwidths in part by employing higher carrier frequencies, such as centimeter-wave and millimeter-wave frequencies. Such systems may in turn employ beamforming to support the higher carrier frequencies.
  • analog beamforming may be applied on both an Evolved Node-B (eNB) side and a User Equipment (UE) side.
  • eNB and a UE may each maintain a plurality of beams.
  • Some UEs may be able to support both omnidirectional transmission and directional transmission.
  • An example initial access procedure may be to transmit a Physical Random Access Channel (PRACH) or 5G PRACH (xPRACH) via omni-directional transmission or directional transmission (e.g., transmission with beams having wide beamwidth).
  • a subsequent step may be to enable directional transmission (e.g., transmission with beamformed beams).
  • a link budget requirement for PRACH may be higher than a link budget requirement for Physical Uplink Shared Channel (PUSCH) (or 5G PUSCH (xPUSCH)), for a cell edge UE, it may be better to use a directional antenna to transmit a Message 3 (Msg3).
  • PUSCH Physical Uplink Shared Channel
  • xPUSCH 5G PUSCH
  • the UE may transmit a PRACH (or xPRACH) repeatedly with different UE beams.
  • An eNB may then be able to detect the PRACH (or xPRACH) successfully from one PRACH (or xPRACH) sequence.
  • the eNB may send a Random Access Response (RAR) to the UE.
  • RAR Random Access Response
  • the network (NW) beam for the RAR may be indicated implicitly by PRACH (or xPRACH).
  • PRACH or xPRACH
  • a resource associated with the PRACH (or xPRACH), or a preamble index, or both may implicitly indicate a beam.
  • Tx Transmit
  • FIG. 1 illustrates User Equipment (UE) beamforming during initial access, in accordance with some embodiments of the disclosure.
  • a procedure 100 between an eNB 101 and a UE 102 may comprise a first part 110, a second part 120, a third part 130, a fourth part 140, and a fifth part 150.
  • eNB 101 may transmit a periodic signal to UE 102.
  • the periodic signal may be a Beam Reference Signal (BRS).
  • the periodic signal may include one or more other signals, such as a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and/or a Physical Broadcast Channel (PBCH).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the periodic signal may include one or more of a 5G PSS (xPSS), a 5G SSS (xSSS), and/or a 5G PBCH (xPBCH).
  • UE 102 may transmit a Message 1 (Msgl) to eNB 101.
  • Msgl Message 1
  • Msgl may be a PRACH (or xPRACH) transmission.
  • the transmission may be via omni-directional transmission.
  • the transmission may be via directional transmission, for example by scanning various beamformed beams of UE 102.
  • eNB 101 may transmit a Message 2 (Msg2) to UE 102.
  • Msg2 Message 2
  • Msg2 may be an RAR transmission.
  • UE 102 may transmit a Message 3 (Msg3) to eNB 101.
  • eNB 101 and UE 102 may engage in various transmissions following an initial access procedure.
  • UE 102 may transmit Msg3 via a UE beam determined to be optimal for transmission to eNB 101.
  • UE 102 may be disposed to identify an optimal or best UE beam in order to transmit Msg3 via the identified beam.
  • Tx UE Transmit
  • Various embodiments pertain to control signaling for a UE Tx beam for Msg3 and/or UE Tx beam management support.
  • the mechanisms and methods may
  • the mechanisms and methods may advantageously make use of omnidirectional antennas and directional antennas.
  • 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.
  • the term "eNB” may refer to a legacy LTE capable Evolved Node-B (eNB), a next-generation or 5G capable eNB (e.g., a gNodeB), a millimeter-wave (mmWave) capable eNB or an mmWave small cell, an Access Point (AP), a Narrowband Internet-of-Things (NB-IoT) capable eNB, a Cellular Internet-of- Things (CIoT) capable eNB, a Machine-Type Communication (MTC) capable eNB, and/or another base station for a wireless communication system.
  • eNB Evolved Node-B
  • 5G capable eNB e.g., a gNodeB
  • mmWave millimeter-wave
  • AP Access Point
  • NB-IoT Narrowband Internet-of-Things
  • CCIoT Cellular Internet-of- Things
  • MTC Machine-Type Communication
  • the term "UE” may refer to a legacy LTE capable User Equipment (UE), a next- generation or 5G capable UE, an mmWave capable UE, a Station (STA), an NB-IoT capable UE, a CIoT capable UE, an MTC capable UE, and/or another mobile equipment for a wireless communication system.
  • UE User Equipment
  • STA Station
  • NB-IoT capable UE a CIoT capable UE
  • MTC capable UE Mobility Management Entity
  • Various embodiments of eNBs and/or UEs discussed below may process one or more transmissions of various types. Some processing of a transmission may comprise demodulating, decoding, detecting, parsing, and/or otherwise handling a transmission that has been received.
  • an eNB or UE processing a transmission may determine or recognize the transmission's type and/or a condition associated with the transmission. For some embodiments, an eNB or UE processing a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type. An eNB or UE processing a transmission may also recognize one or more values or fields of data carried by the transmission.
  • Processing a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission that has been received by an eNB or a UE through one or more layers of a protocol stack.
  • a protocol stack which may be implemented in, e.g., hardware and/or software-configured elements
  • Various embodiments of eNBs and/or UEs discussed below may also generate one or more transmissions of various types. Some generating of a transmission may comprise modulating, encoding, formatting, assembling, and/or otherwise handling a transmission that is to be transmitted. In some embodiments, an eNB or UE generating a transmission may establish the transmission's type and/or a condition associated with the transmission. For some embodiments, an eNB or UE generating a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type. An eNB or UE generating a transmission may also determine one or more values or fields of data carried by the transmission.
  • Generating a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission to be sent by an eNB or a UE through one or more layers of a protocol stack.
  • a protocol stack which may be implemented in, e.g., hardware and/or software-configured elements
  • resources may span various Resource Blocks (RBs),
  • PRBs Physical Resource Blocks
  • time periods e.g., frames, subframes, and/or slots
  • allocated resources e.g., channels, Orthogonal Frequency -Division Multiplexing (OFMD) symbols, subcarrier frequencies, resource elements (REs), and/or portions thereof
  • OFMD Orthogonal Frequency -Division Multiplexing
  • REs resource elements
  • allocated resources e.g., channels, OFDM symbols, subcarrier frequencies, REs, and/or portions thereof
  • allocated resources e.g., channels, OFDM symbols, subcarrier frequencies, REs, and/or portions thereof
  • a UE may transmit a sequence of a number N of repeated PRACH (or xPRACH), and different UE beams may be applied for various transmitted PRACH. Then, in a Msg2, an eNB may indicate to the UE which UE beam (or beams) may be used for UL transmission. The transmit power for each PRACH repetition may be the same, and the eNB may select an optimum PRACH sequence (and thereby select an optimum UE Tx beam) according to the receiving power for all repetitions.
  • the selected UE Tx beam for use in a subsequent Msg3 may be indicated by an Msg2.
  • a selected PRACH slot index may be used to denote a UE Tx beam index among the UE Tx beams used for the Msgl . Note that the UE Tx beams may be different in each PRACH slot.
  • Fig. 2 illustrates a scenario of procedures for initial access, in accordance with some embodiments of the disclosure.
  • a procedure 200 between an eNB 201 and a UE 202 may comprise a first part 210, a second part 220, a third part 230, a fourth part 240, and a fifth part 250.
  • Procedure 200 may be employed by, for example, a UE with a directional antenna.
  • eNB 201 may transmit a periodic signal to UE 102.
  • the periodic signal may comprise a BRS, a PSS, a SSS, a PBCH, an xPSS, an xSSS an xPBCH.
  • UE 202 may transmit an Msgl to eNB 201.
  • Msgl may include a PRACH or xPRACH transmission.
  • the transmission may be via directional transmission, for example by scanning various beamformed beams of UE 202.
  • Each transmission may carry an indicator of the UE Tx beam through which the transmission is being sent.
  • eNB 301 may transmit an Msg2 to UE 202.
  • the Msg2 may be a RAR transmission.
  • the Msg2 may carry an indicator of PRACH or xPRACH slot index and/or UE Tx beam index associated with the optimum UE Tx beam.
  • UE 202 may transmit Msg3 via the UE beam corresponding with the PRACH or xPRACH slot index and/or UE Tx beam index indicated by the Msg2.
  • eNB 201 and UE 202 may engage in various transmissions following the initial access procedure.
  • PRACH or xPRACH slot index indicator having [log 2 N] bits (where N may be a number of UE Tx beams supported by UE 202).
  • the PRACH or xPRACH slot index may have a value reflecting the optimum or best UE Tx beam as selected by eNB 201.
  • the PRACH or xPRACH slot index may accordingly correspond to a UE Tx beam index.
  • PRACH or xPRACH slot index may be carried by a UL grant for an Msg3 or an RAR message.
  • there may be two PRACH or xPRACH slot indices (e.g., carried by an Msg3 or an RAR message): one may be for a primary UE Tx beam, and the other may be for a secondary UE Tx beam.
  • a PRACH or xPRACH slot index, or a UE Tx beam index may be carried in a Downlink Control Information (DCI) bearing a DL grant for RAR message transmission.
  • DCI Downlink Control Information
  • This PRACH or xPRACH slot index, or UE Tx beam index may indicate a UE Tx beam to be used for Msg3 transmission.
  • FIG. 3 illustrates an RAR with UE Transmit Tx beam index or PRACH / xPRACH slot index, in accordance with some embodiments of the disclosure.
  • An RAR design 300 may include a PRACH or xPRACH slot index, or a UE Tx beam index.
  • a PRACH or xPRACH slot index or UE Tx beam index may be carried in an octet 7 of RAR design 300.
  • the PRACH or xPRACH slot index or UE Tx beam index may be defined in a first part of RAR design 300, or may be included in a UL grant of RAR design 300.
  • an eNB may indicate, such as by a single-bit indicator, that the UE may transmit an Msg3 using multiple panels or beams simultaneously. This may advantageously help improve a link budget by exploiting the benefits of Tx diversity.
  • an indicator may be included in the DCI carrying DL grant for RAR message transmission.
  • such an indicator may be included in an RAR message.
  • such an indicator may indicate whether a UE should transmit Msg3 using one panel or two panels.
  • a Random Access Radio Network Temporary Identifier [0051] In some embodiments, a Random Access Radio Network Temporary Identifier
  • RA-RNTI for DCI of an Msg2 may be determined by a selected PRACH or xPRACH slot index and/or a predetermined RA-RNTI.
  • the Radio Network Temporary Identifier may be RA-RNTI + x, where x is a selected PRACH or xPRACH slot index.
  • a search space and/or a Cyclic Redundancy Check (CRC) sequence for the DCI may be determined by a selected PRACH or xPRACH slot index.
  • CRC Cyclic Redundancy Check
  • the Transport Block (TB) CRC sequence for an Msg2 may be determined by a selected PRACH or xPRACH slot index.
  • the UE may then obtain the information regarding a PRACH or xPRACH slot index, or UE Tx beam index (and according UE Tx beam) by successfully decoding the Msg2 with the correct TB CRC sequence.
  • a subframe index when an Msg2 is transmitted may be determined by a selected PRACH or xPRACH slot index.
  • a UE may then obtain the PRACH or xPRACH slot index when it successfully decodes the Msg2.
  • n S f for the Msg2 transmission might be calculated by:
  • n sf hash(N s , ⁇ ⁇ , ⁇ ⁇ ),
  • N s may denote a PRACH or xPRACH slot index, or UE Tx beam index
  • N c f ⁇ 1 may indicate a cell identity (ID)
  • I RB may be a starting Resource Block (RB) index for the PRACH or xPRACH
  • hash( ) may be a predetermined hash function.
  • FIG. 4 illustrates a scenario of procedures for initial access, in accordance with some embodiments of the disclosure.
  • a procedure 400 between an eNB 401 and a UE 402 may comprise a first part 410, a second part 420, a third part 430, a fourth part 440, a fifth part 450, a sixth part 460, and a seventh part 470.
  • eNB 401 may transmit a periodic signal to UE 402.
  • the periodic signal may comprise a BRS, a PSS, a SSS, a PBCH, an xPSS, an xSSS an xPBCH.
  • UE 402 may transmit a PRACH or xPRACH transmission to eNB 401.
  • the PRACH or xPRACH transmission maybe sent via an omni-directional antenna.
  • An overhead for the PRACH or xPRACH transmission may accordingly be advantageously reduced, because the transmission may not employ UE Tx beam scanning (e.g., the transmission may not be sent through multiple available UE Tx beams).
  • UEs in cell-center areas might continue to use omni-directional antennas for transmitting following messages, and thereby continue to save the reduced overhead for the PRACH or xPRACH transmission.
  • UEs in cell-edge areas may still benefit from use of directional antennas for subsequent transmissions, such as Msg3 transmissions, in order to increase a link budget.
  • a preamble index may be divided into a first group and a second group. If a UE is located in a cell-edge area, and if the UE has the ability to use directional antennas, a preamble index within the first group may be selected for PRACH or xPRACH transmission; otherwise, a preamble index within the second group may be selected for PRACH or xPRACH transmission.
  • eNB 401 may transmit an RAR transmission to UE 402. eNB 401 may then schedule a Sounding Reference Signal (SRS) or 5G SRS (xSRS) for UE 402 to train the UE Tx beam.
  • SRS Sounding Reference Signal
  • xSRS 5G SRS
  • a UL grant for the SRS or xSRS may be added in the RAR instead of a UL grant for an Msg3.
  • UE 402 may transmit the SRS or xSRS transmission, which may include a repeated SRS or xSRS sequences.
  • the transmission may be directional, for example by scanning various beamformed beams of UE 402.
  • Each transmission may carry an indicator of the UE Tx beam through which the transmission is being sent.
  • eNB 401 may send a UL grant transmission to UE 402.
  • UL grant transmission may carry a UL grant for an Msg3 from UE 402, and may also carry an indicator of SRS or xSRS slot index and/or UE Tx beam index associated with the optimum UE Tx beam.
  • the SRS or xSRS slot index and/or UE Tx beam index may have
  • N may be a number of SRS or xSRS transmitted (for example, a number of repeated SRS or xSRS sequences).
  • One value of the index (e.g., a first value of a range of values of the index) may indicate omni-directional transmission.
  • UE 402 may transmit an Msg3 via the UE beam
  • eNB 401 and UE 402 may engage in various scenarios
  • FIG. 5 illustrates a scenario of procedures for initial access, in accordance with some embodiments of the disclosure.
  • a procedure 500 between an eNB 501 and a UE 502 may comprise a first part 510, a second part 520, a third part 530, a fourth part 540, and a fifth part 550.
  • Procedure 500 may accommodate reciprocity at eNB 501 and/or reciprocity at UE 502.
  • first part 510 after UE 502 acquires DL synchronization and/or completes a cell search via PSS, SSS, PBCH, a System Information Block number x (SIBx), xPSS, xSSS, xPBCH, and/or 5G SIBx, UE 502 may attempt a random access procedure. In some embodiments, either in between or later, UE 502 may perform a beam measurement, possibly through use of a references signal (e.g., BRS) to detect an eNB Tx beam.
  • a references signal e.g., BRS
  • UE 502 may transmit an Msgl to eNB 501.
  • Msgl may include a PRACH or xPRACH transmission, which may be via directional transmission (e.g., via scanning various beamformed beams of UE 502).
  • Each transmission may carry an indicator of the UE Tx beam through which the transmission is being sent.
  • UE 502 may randomly select a PRACH or xPRACH preamble sequence, a set of time-domain resources, and/or a set of frequency-domain resources to be communicated to eNB 501.
  • the multiple instances e.g., multiple instances in a set of time-domain resources and/or frequency -domain resources, which may potentially be consecutive (e.g., on available UL resources) may be defined to send a PRACH preamble or xPRACH preamble for a selected PRACH or xPRACH preamble code, set of time-domain resources, and/or set of frequency -domain resources.
  • the same PRACH or xPRACH preambles may be transmitted over multiple instances, while for some embodiments, different PRACH or xPRACH preambles may be transmitted over multiple instances.
  • a first type of operation facilitated may be UE omnidirectional beam, quasi-omni-directional beam, wider-beam, and/or narrow-beam
  • TRP Transmission/Reception Point
  • a second type of operation may be eNB Receive (Rx) beam search based on repetitions in a given beam.
  • eNB Rx beam search may be used for eNB Rx bearnforrning vectors where eNB Rx beamforming is supported.
  • a third type of operation may be detection of eNB Rx beam and use thereof for eNB Tx beam, for embodiments having eNB reciprocity.
  • a fourth type of operation may be eNB detection based on an accumulation over multiple instances. For example, eNB detection may be improved in embodiments in which eNB Rx beamforming may not be supported. Such eNB detection may
  • eNB 501 may transmit an Msg2 to UE 502.
  • the Msg2 may be a RAR transmission.
  • the Msg2 may carry an indicator of PRACH or xPRACH slot index and/or UE Tx beam index associated with the optimum UE Tx beam.
  • RAR may be sent in multiple instances.
  • the contents of the RAR may be the same, or may be different across the multiple instances.
  • RAR may be sent over multiple instances with omni-beam transmission, quasi-omni-beam transmission, winder-beam transmission, and/or narrow-beam transmission.
  • RAR may be sent over multiple instances with the same eNB Tx beam.
  • UE 502 may exploit a UE Rx beam sweeping procedure to determine one or more UE Rx beam weight vectors.
  • eNB 501 supports reciprocity, RAR may be sent over multiple instances with an eNB Rx beam detected based upon Msgl reception.
  • UE 502 may transmit Msg3 via the UE beam corresponding with the PRACH or xPRACH slot index and/or UE Tx beam index indicated by the Msg2.
  • the Msg3 may carry an indicator such as a detected eNB Tx beam indicator and/or a determined UE Rx beam indicator. In some embodiments, such indicators may also be applied for other TRP-based beam-searching procedures.
  • Fig. 6 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure.
  • Fig. 6 includes block diagrams of an eNB 610 and a UE 630 which are operable to co-exist with each other and other elements of an LTE network. High-level, simplified architectures of eNB 610 and UE 630 are described so as not to obscure the embodiments. It should be noted that in some embodiments, eNB 610 may be a stationary non-mobile device.
  • eNB 610 is coupled to one or more antennas 605, and UE 630 is similarly coupled to one or more antennas 625. However, in some embodiments, eNB 610 may incorporate or comprise antennas 605, and UE 630 in various embodiments may incorporate or comprise antennas 625. [0076] In some embodiments, antennas 605 and/or antennas 625 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. In some MIMO (multiple-input and multiple output) embodiments, antennas 605 are separated to take advantage of spatial diversity.
  • MIMO multiple-input and multiple output
  • eNB 610 and UE 630 are operable to communicate with each other on a network, such as a wireless network.
  • eNB 610 and UE 630 may be in communication with each other over a wireless communication channel 650, which has both a downlink path from eNB 610 to UE 630 and an uplink path from UE 630 to eNB 610.
  • eNB 610 may include a physical layer circuitry 612, a MAC (media access control) circuitry 614, a processor 616, a memory 618, and a hardware processing circuitry 620.
  • MAC media access control
  • physical layer circuitry 612 includes a transceiver 613 for providing signals to and from UE 630.
  • Transceiver 613 provides signals to and from UEs or other devices using one or more antennas 605.
  • MAC circuitry 614 controls access to the wireless medium.
  • Memory 618 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 620 may comprise logic devices or circuitry to perform various operations.
  • processor 616 and memory 618 are arranged to perform the operations of hardware processing circuitry 620, such as operations described herein with reference to logic devices and circuitry within eNB 610 and/or hardware processing circuitry 620.
  • eNB 610 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 630 may include a physical layer circuitry 632, a MAC circuitry 634, a processor 636, a memory 638, a hardware processing circuitry 640, a wireless interface 642, and a display 644.
  • 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 632 includes a transceiver 633 for providing signals to and from eNB 610 (as well as other eNBs). Transceiver 633 provides signals to and from eNBs or other devices using one or more antennas 625.
  • MAC circuitry 634 controls access to the wireless medium.
  • Memory 638 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 642 may be arranged to allow the processor to communicate with another device.
  • Display 644 may provide a visual and/or tactile display for a user to interact with UE 630, such as a touch-screen display.
  • Hardware processing circuitry 640 may comprise logic devices or circuitry to perform various operations.
  • processor 636 and memory 638 may be arranged to perform the operations of hardware processing circuitry 640, such as operations described herein with reference to logic devices and circuitry within UE 630 and/or hardware processing circuitry 640.
  • UE 630 may be a device comprising an application processor, a memory, one or more antennas, a wireless interface for allowing the application processor to communicate with another device, and a touch-screen display.
  • FIG. 6 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. 6 and Figs. 7-8 and 11-12 can operate or function in the manner described herein with respect to any of the figures.
  • eNB 610 and UE 630 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. 7 illustrates hardware processing circuitries for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some
  • Fig. 8 illustrates hardware processing circuitries for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some embodiments of the disclosure.
  • a UE may include various hardware processing circuitries discussed herein (such as hardware processing circuitry 700 of Fig. 7 or hardware processing circuitry 800 of Fig. 8), which may in turn comprise logic devices and/or circuitry operable to perform various operations.
  • UE 630 or various elements or components therein, such as hardware processing circuitry 640, or combinations of elements or components therein
  • 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 636 and/or one or more other processors which UE 630 may comprise
  • memory 638 and/or other elements or components of UE 630 (which may include hardware processing circuitry 640) 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 636 (and/or one or more other processors which UE 630 may comprise) may be a baseband processor.
  • an apparatus of UE 630 (or another UE or mobile handset), which may be operable to communicate with one or more eNBs on a wireless network, may comprise hardware processing circuitry 700.
  • hardware processing circuitry 700 may comprise one or more antenna ports 705 operable to provide various transmissions over a wireless communication channel (such as wireless
  • Antenna ports 705 may be coupled to one or more antennas 707 (which may be antennas 625).
  • antennas 707 which may be antennas 625.
  • hardware processing circuitry 700 may incorporate antennas 707, while in other embodiments, hardware processing circuitry 700 may merely be coupled to antennas 707.
  • Antenna ports 705 and antennas 707 may be operable to provide signals from a UE to a wireless communications channel and/or an eNB, and may be operable to provide signals from an eNB and/or a wireless communications channel to a UE.
  • antenna ports 705 and antennas 707 may be operable to provide transmissions from UE 630 to wireless communication channel 650 (and from there to eNB 610, or to another eNB).
  • antennas 707 and antenna ports 705 may be operable to provide transmissions from a wireless communication channel 650 (and beyond that, from eNB 610, or another eNB) to UE 630.
  • Hardware processing circuitry 700 may comprise various circuitries operable in accordance with the various embodiments discussed herein. With reference to Fig. 7, hardware processing circuitry 700 may comprise a first circuitry 710 and/or a second circuitry 720.
  • First circuitry 710 may be operable to generate one or more first transmissions carrying one or more respectively corresponding PRACHs for one or more respectively corresponding UE Tx beams.
  • Second circuitry 720 may be operable to process a second transmission carrying a UE Tx beam index corresponding to one of the PRACHs.
  • First circuitry 710 may also be operable to generate a third transmission for the UE Tx beam corresponding to the UE Tx beam index.
  • Second circuitry 720 may be operable to provide the UE Tx beam index to first circuitry 710 via an interface 725.
  • Hardware processing circuitry 700 may further comprise an interface for outputting the one or more first transmissions and the third transmission to a transmission circuitry, and for inputting the second transmission from a receiving circuitry.
  • the UE Tx beam index may be one of: a PRACH slot index; or a time instance index; or a time instances group index.
  • the second transmission may carry an RAR message.
  • an RA-RNTI for the RAR message may be determined by the UE Tx beam index.
  • a CRC code sequence for a DCI may be determined by a PRACH slot index.
  • the UE Tx beam index may be carried by an uplink grant.
  • the UE Tx beam index may determine a subframe index, a slot index, and/or a min-slot index.
  • the one or more first transmissions may be associated with one or more respectively corresponding combinations of resources comprising a PRACH preamble selected from a set of PRACH preambles, a time-domain resource selected from a set of time-domain resources, and/or a frequency-domain resource selected from a set of frequency -domain resources.
  • a PRACH preamble selected from a set of PRACH preambles
  • a time-domain resource selected from a set of time-domain resources
  • a frequency-domain resource selected from a set of frequency -domain resources selected from a set of frequency -domain resources.
  • the second transmission may be one of a plurality of second transmissions carrying a respectively corresponding plurality of eNB Tx beam indices.
  • the third transmission may carry an eNB Tx beam index corresponding to the second transmission.
  • first circuitry 710 and/or second circuitry 720 may be implemented as separate circuitries. In other embodiments, first circuitry 710 and second circuitry 720 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • an apparatus of UE 630 (or another UE or mobile handset), which may be operable to communicate with one or more eNBs on a wireless network, may comprise hardware processing circuitry 800.
  • hardware processing circuitry 800 may comprise one or more antenna ports 805 operable to provide various transmissions over a wireless communication channel (such as wireless
  • Antenna ports 805 may be coupled to one or more antennas 807 (which may be antennas 625).
  • hardware processing circuitry 800 may incorporate antennas 807, while in other embodiments, hardware processing circuitry 800 may merely be coupled to antennas 807.
  • Antenna ports 805 and antennas 807 may be operable to provide signals from a UE to a wireless communications channel and/or an eNB, and may be operable to provide signals from an eNB and/or a wireless communications channel to a UE.
  • antenna ports 805 and antennas 807 may be operable to provide transmissions from UE 630 to wireless communication channel 650 (and from there to eNB 610, or to another eNB).
  • antennas 807 and antenna ports 805 may be operable to provide transmissions from a wireless communication channel 650 (and beyond that, from eNB 610, or another eNB) to UE 630.
  • Hardware processing circuitry 800 may comprise various circuitries operable in accordance with the various embodiments discussed herein. With reference to Fig. 8, hardware processing circuitry 800 may comprise a first circuitry 810 and/or a second circuitry 820. First circuitry 810 may be operable to generate a first transmission carrying a PRACH. Second circuitry 820 may be operable to process a second transmission carrying a UL grant for an SRS. Second circuitry 820 may be operable to provide the UL grant to first circuitry 810 via an interface 825. First circuitry 810 may also be operable to generate one or more third transmissions carrying one or more respectively corresponding SRSes for one or more respectively corresponding UE Tx beams.
  • Second circuitry may also be operable to process a fourth transmission carrying a UE Tx beam index corresponding to one of the SRSes.
  • First circuitry 810 may additionally be operable to generate a fifth transmission for the UE Tx beam corresponding to the UE Tx beam index.
  • Second circuitry 820 may be operable to provide the UE Tx beam index to first circuitry 810 via interface 825.
  • Hardware processing circuitry 800 may further comprise an interface for outputting the first transmission, the one or more third transmissions, and the fifth transmission to a transmission circuitry, and for inputting the second transmission and the fourth transmission from a receiving circuitry.
  • a preamble index for the PRACH may be in a first group if a UE antenna structure is omni-directional, and the preamble index for the PRACH is in a second group if the UE antenna structure is directional.
  • the first transmission may be generated for an omni-directional antenna.
  • the second transmission may carry an RAR message.
  • first circuitry 810 and/or second circuitry 820 may be implemented as separate circuitries. In other embodiments, first circuitry 810 and second circuitry 820 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • Fig. 9 illustrates methods for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some embodiments of the disclosure.
  • Fig. 10 illustrates methods for a UE for control signaling for UE Tx beamforming in random-access procedures, in accordance with some embodiments of the disclosure.
  • methods that may relate to UE 630 and hardware processing circuitry 640 are discussed herein.
  • the actions in the method 900 of Fig. 9 and method 1000 of Fig. 10 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. 9 and 10 are optional in accordance with certain embodiments.
  • the numbering of the actions presented is for the sake of clarity and is not intended to prescribe an order of operations in which the various actions must occur. Additionally, operations from the various flows may be utilized in a variety of combinations.
  • machine readable storage media may have executable instructions that, when executed, cause UE 630 and/or hardware processing circuitry 640 to perform an operation comprising the methods of Figs. 9 and 10.
  • 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. 9 and 10.
  • a method 900 may comprise a generating 910, a processing 915, and a generating 920.
  • generating 910 one or more first transmissions carrying one or more respectively corresponding PRACHs for one or more respectively corresponding UE Tx beams may be generated.
  • processing 915 a second transmission carrying a UE Tx beam index corresponding to one of the PRACHs may be processed.
  • generating 920 a third transmission for the UE Tx beam corresponding to the UE Tx beam index may be generated.
  • the UE Tx beam index may be one of: a PRACH slot index; or a time instance index; or a time instances group index.
  • the second transmission may carry an RAR message.
  • an RA-RNTI for the RAR message may be determined by the UE Tx beam index.
  • a CRC code sequence for a DCI may be determined by a PRACH slot index.
  • the UE Tx beam index may be carried by an uplink grant.
  • the UE Tx beam index may determine a subframe index, a slot index, and/or a min-slot index.
  • the one or more first transmissions may be associated with one or more respectively corresponding combinations of resources comprising a PRACH preamble selected from a set of PRACH preambles, a time-domain resource selected from a set of time-domain resources, and/or a frequency-domain resource selected from a set of frequency -domain resources.
  • a PRACH preamble selected from a set of PRACH preambles
  • a time-domain resource selected from a set of time-domain resources
  • a frequency-domain resource selected from a set of frequency -domain resources selected from a set of frequency -domain resources.
  • At least one of the resources may be indexed consecutively corresponding to a consecutive indexing of the one or more UE Tx beams.
  • the second transmission may be one of a plurality of second transmissions carrying a respectively corresponding plurality of eNB Tx beam indices.
  • the third transmission may carry an eNB Tx beam index corresponding to the second transmission.
  • a method 1000 may comprise a generating 1010, a processing 1015, a generating 1020, a processing 1025, and a generating 1030.
  • generating 1010 a first transmission carrying a PRACH may be generated.
  • processing 1015 a second transmission carrying an UL grant for an SRS may be processed.
  • generating 1020 one or more third transmissions carrying one or more respectively corresponding SRSes for one or more respectively corresponding UE Tx beams may be generated.
  • a fourth transmission carrying a UE Tx beam index corresponding to one of the SRSes may be processed.
  • a fifth transmission for the UE Tx beam corresponding to the UE Tx beam index may be generated.
  • a preamble index for the PRACH may be in a first group if a UE antenna structure is omni-directional, and the preamble index for the PRACH is in a second group if the UE antenna structure is directional.
  • the first transmission may be generated for an omni-directional antenna.
  • the second transmission may carry an RAR message.
  • Fig. 11 illustrates example components of a device, in accordance with some embodiments of the disclosure.
  • the device 1100 may include application circuitry 1102, baseband circuitry 1104, Radio Frequency (RF) circuitry 1106, front-end module (FEM) circuitry 1108, one or more antennas 1110, and power management circuitry (PMC) 1112 coupled together at least as shown.
  • the components of the illustrated device 1100 may be included in a UE or a RAN node.
  • the device 1100 may include less elements (e.g., a RAN node may not utilize application circuitry 1102, and instead include a processor/controller to process IP data received from an EPC).
  • the device 1100 may include additional elements such as, for example, memory /storage, display, camera, sensor, or input/output (I/O) interface.
  • additional elements such as, for example, memory /storage, display, camera, sensor, or input/output (I/O) interface.
  • the components described below may be included in more than one device (e.g., said circuitries may be separately included in more than one device for Cloud-RAN (C- RAN) implementations).
  • C- RAN Cloud-RAN
  • the application circuitry 1102 may include one or more application processors.
  • the application circuitry 1102 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 or may include memory /storage and may be configured to execute instructions stored in the memory /storage to enable various applications or operating systems to run on the device 1100.
  • processors of application circuitry 1 102 may process IP data packets received from an EPC.
  • the baseband circuitry 1104 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the baseband circuitry 1 104 may include one or more baseband processors or control logic to process baseband signals received from a receive signal path of the RF circuitry 1 106 and to generate baseband signals for a transmit signal path of the RF circuitry 1106.
  • Baseband processing circuity 1104 may interface with the application circuitry 1 102 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 1 106.
  • the baseband circuitry 1104 may include a third generation (3G) baseband processor 1104A, a fourth generation (4G) baseband processor 1 104B, a fifth generation (5G) baseband processor 1 104C, or other baseband processor(s) 1 104D for other existing generations, generations in development or to be developed in the future (e.g., second generation (2G), sixth generation (6G), etc.).
  • the baseband circuitry 1 104 e.g., one or more of baseband processors 1 104A-D
  • baseband processors 1104A-D may be included in modules stored in the memory 1 104G and executed via a Central Processing Unit (CPU) 1 104E.
  • the radio control functions may include, but are not limited to, signal modulation/demodulation,
  • modulation/demodulation circuitry of the baseband circuitry 1104 may include Fast-Fourier Transform (FFT), precoding, or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • encoding/decoding circuitry of the baseband circuitry 1 104 may include convolution, tail-biting convolution, turbo, Viterbi, or Low Density Parity Check (LDPC) encoder/decoder functionality.
  • LDPC Low Density Parity Check
  • encoder/decoder functionality are not limited to these examples and may include other suitable functionality in other embodiments.
  • the baseband circuitry 1 104 may include one or more audio digital signal processor(s) (DSP) 1 104F.
  • the audio DSP(s) 1 104F 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 1104 and the application circuitry 1102 may be implemented together such as, for example, on a system on a chip (SOC).
  • SOC system on a chip
  • the baseband circuitry 1 104 may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry 1 104 may support communication with an evolved universal terrestrial radio access network (EUTRAN) 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 1 104 is configured to support radio communications of more than one wireless protocol.
  • RF circuitry 1 106 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry 1106 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.
  • RF circuitry 1 106 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 1108 and provide baseband signals to the baseband circuitry 1104.
  • RF circuitry 1 106 may also include a transmit signal path which may include circuitry to up-convert baseband signals provided by the baseband circuitry 1 104 and provide RF output signals to the FEM circuitry 1 108 for transmission.
  • the receive signal path of the RF circuitry 1 106 may include mixer circuitry 1106 A, amplifier circuitry 1106B and filter circuitry 1106C.
  • the transmit signal path of the RF circuitry 1106 may include filter circuitry 1 106C and mixer circuitry 1 106A.
  • RF circuitry 1 106 may also include synthesizer circuitry 1 106D for synthesizing a frequency for use by the mixer circuitry 1106 A of the receive signal path and the transmit signal path.
  • the mixer circuitry 1106 A of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 1 108 based on the synthesized frequency provided by synthesizer circuitry 1106D.
  • the amplifier circuitry 1106B may be configured to amplify the down-converted signals and the filter circuitry 1 106C 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 1104 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 1106 A of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1106A of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 1106D to generate RF output signals for the FEM circuitry 1108.
  • the baseband signals may be provided by the baseband circuitry 1 104 and may be filtered by filter circuitry 1 106C.
  • the mixer circuitry 1106A of the receive signal path and the mixer circuitry 1 106A of the transmit signal path may include two or more mixers and may be arranged for quadrature downconversion and upconversion, respectively.
  • the mixer circuitry 1106 A of the receive signal path and the mixer circuitry 1 106A 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 1 106 A of the receive signal path and the mixer circuitry 1106 A may be arranged for direct downconversion and direct upconversion, respectively.
  • the mixer circuitry 1 106A of the receive signal path and the mixer circuitry 1106A 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 1 106 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 1 104 may include a digital baseband interface to communicate with the RF circuitry 1106.
  • 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 1 106D 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 1106D may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 1 106D may be configured to synthesize an output frequency for use by the mixer circuitry 1 106 A of the RF circuitry 1 106 based on a frequency input and a divider control input.
  • the synthesizer circuitry 1106D 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 1104 or the applications processor 1 102 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 1 102.
  • Synthesizer circuitry 1 106D of the RF circuitry 1 106 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 1106D 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 1 106 may include an IQ/polar converter.
  • FEM circuitry 1 108 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 11 10, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 1 106 for further processing.
  • FEM circuitry 1 108 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 1 106 for transmission by one or more of the one or more antennas 11 10.
  • the amplification through the transmit or receive signal paths may be done solely in the RF circuitry 1 106, solely in the FEM 1 108, or in both the RF circuitry 1106 and the FEM 1 108.
  • the FEM circuitry 1108 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 an LNA to amplify received RF signals and provide the amplified received RF signals as an output (e.g., to the RF circuitry 1106).
  • the transmit signal path of the FEM circuitry 1108 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 1 106), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 1 1 10).
  • PA power amplifier
  • the PMC 11 12 may manage power provided to the baseband circuitry 1104.
  • the PMC 11 12 may control power-source selection, voltage scaling, battery charging, or DC-to-DC conversion.
  • the PMC 1 112 may often be included when the device 1100 is capable of being powered by a battery, for example, when the device is included in a UE.
  • the PMC 11 12 may increase the power conversion efficiency while providing desirable implementation size and heat dissipation characteristics.
  • Fig. 11 shows the PMC 11 12 coupled only with the baseband circuitry 1 104.
  • the PMC 11 12 may be additionally or alternatively coupled with, and perform similar power management operations for, other components such as, but not limited to, application circuitry 1 102, RF circuitry 1 106, or FEM 1108.
  • the PMC 11 12 may control, or otherwise be part of, various power saving mechanisms of the device 1100. For example, if the device 1100 is in an RRC_Connected state, where it is still connected to the RAN node 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 1100 may power down for brief intervals of time and thus save power.
  • DRX Discontinuous Reception Mode
  • the device 1 100 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 device 1 100 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.
  • the device 1 100 may not receive data in this state, in order to receive data, it must 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.
  • Processors of the application circuitry 1102 and processors of the baseband circuitry 1104 may be used to execute elements of one or more instances of a protocol stack.
  • processors of the baseband circuitry 1 104 may be used execute Layer 3, Layer 2, or Layer 1 functionality, while processors of the application circuitry 1 104 may utilize data (e.g., packet data) received from these layers and further execute Layer 4 functionality (e.g., transmission communication protocol (TCP) and user datagram protocol (UDP) layers).
  • Layer 3 may comprise a radio resource control (RRC) layer, described in further detail below.
  • RRC radio resource control
  • Layer 2 may comprise a medium access control (MAC) layer, a radio link control (RLC) layer, and a packet data convergence protocol (PDCP) layer, described in further detail below.
  • Layer 1 may comprise a physical (PHY) layer of a UE/RAN node, described in further detail below.
  • Fig. 12 illustrates example interfaces of baseband circuitry, in accordance with some embodiments of the disclosure.
  • the baseband circuitry 1 104 of Fig. 11 may comprise processors 1 104A-1 104E and a memory 1104G utilized by said processors.
  • Each of the processors 1 104A-1 104E may include a memory interface, 1204A- 1204E, respectively, to send/receive data to/from the memory 1104G.
  • the baseband circuitry 1104 may further include one or more interfaces to communicatively couple to other circuitries/devices, such as a memory interface 1212 (e.g., an interface to send/receive data to/from memory extemal to the baseband circuitry 1104), an application circuitry interface 1214 (e.g., an interface to send/receive data to/from the application circuitry 1102 of Fig. 11), an RF circuitry interface 1216 (e.g., an interface to send/receive data to/from RF circuitry 1106 of Fig.
  • a memory interface 1212 e.g., an interface to send/receive data to/from memory extemal to the baseband circuitry 1104
  • an application circuitry interface 1214 e.g., an interface to send/receive data to/from the application circuitry 1102 of Fig. 11
  • an RF circuitry interface 1216 e.g., an interface to send/receive data to/from RF circuitry 1106 of
  • a wireless hardware connectivity interface 1218 e.g., an interface to send/receive data to/from Near Field Communication (NFC) components, Bluetooth® components (e.g., Bluetooth® Low Energy), Wi-Fi® components, and other communication components
  • a power management interface 1220 e.g., an interface to send/receive power or control signals to/from the PMC 1 112.
  • DRAM Dynamic RAM
  • Example 1 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: one or more processors to: generate one or more first transmissions carrying one or more respectively corresponding Physical Random Access Channels (PRACHs) for one or more respectively corresponding UE Transmit (Tx) beams; process a second transmission carrying a UE Tx beam index corresponding to one of the PRACHs; and generate a third transmission for the UE Tx beam corresponding to the UE Tx beam index, and an interface for outputting the one or more first transmissions and the third transmission to a transmission circuitry, and for receiving the second transmission from a receiving circuitry.
  • PRACHs Physical Random Access Channels
  • Tx UE Transmit
  • the apparatus of example 1, wherein the UE Tx beam index is one of: a PRACH slot index; or a time instance index; or a time instances group index.
  • example 3 the apparatus of either of examples 1 or 2, wherein the second transmission carries a Random Access Response (RAR) message.
  • RAR Random Access Response
  • a Random Access Radio Network Temporary Identifier for the RAR message is determined by the UE Tx beam index.
  • CRC Redundancy Check
  • example 6 the apparatus of any of examples 1 through 5, wherein the UE
  • Tx beam index is carried by an uplink grant.
  • example 7 the apparatus of any of examples 1 through 6, wherein the UE
  • Tx beam index determines one of: a subframe index; or a slot index; or a min-slot index.
  • example 8 the apparatus of any of examples 1 through 7, wherein the one or more first transmissions are associated with one or more respectively corresponding combinations of resources comprising at least one of: a PRACH preamble selected from a set of PRACH preambles, a time-domain resource selected from a set of time-domain resources, and a frequency-domain resource selected from a set of frequency-domain resources.
  • a PRACH preamble selected from a set of PRACH preambles
  • time-domain resource selected from a set of time-domain resources
  • a frequency-domain resource selected from a set of frequency-domain resources selected from a set of frequency-domain resources.
  • example 10 the apparatus of any of examples 1 through 9, wherein the second transmission is one of a plurality of second transmissions carrying a respectively corresponding plurality of eNB Tx beam indices.
  • example 11 the apparatus of example 10, wherein the third transmission carries an eNB Tx beam index corresponding to the second transmission.
  • Example 12 provides a User Equipment (UE) device comprising an application processor, a memory, one or more antennas, a wireless interface for allowing the application processor to communicate with another device, and a touch-screen display, the UE device including the apparatus of any of examples 1 through 11.
  • UE User Equipment
  • Example 13 provides a method comprising: generating, for a User Equipment
  • UE one or more first transmissions carrying one or more respectively corresponding Physical Random Access Channels (PRACHs) for one or more respectively corresponding UE Transmit (Tx) beams; processing a second transmission carrying a UE Tx beam index corresponding to one of the PRACHs; and generating a third transmission for the UE Tx beam corresponding to the UE Tx beam index.
  • PRACHs Physical Random Access Channels
  • Tx UE Transmit
  • example 14 the method of example 13, wherein the UE Tx beam index is a one of: a PRACH slot index; or a time instance index; or a time instances group index.
  • example 15 the method of either of examples 13 or 14, wherein the second transmission carries a Random Access Response (RAR) message.
  • RAR Random Access Response
  • a Random Access Radio Network Temporary Identifier for the RAR message is determined by the UE Tx beam index.
  • Cyclic Redundancy Check (CRC) code sequence for a Downlink Control Information (DCI) is determined by a PRACH slot index.
  • Tx beam index is carried by an uplink grant.
  • Tx beam index determines one of: a subframe index; or a slot index; or a min-slot index.
  • example 20 the method of any of examples 13 through 19, wherein the one or more first transmissions are associated with one or more respectively corresponding combinations of resources comprising at least one of: a PRACH preamble selected from a set of PRACH preambles, a time-domain resource selected from a set of time-domain resources, and a frequency-domain resource selected from a set of frequency-domain resources.
  • example 21 the method of example 20, wherein, within the one or more combinations of resources, at least one of the resources is indexed consecutively
  • example 22 the method of any of examples 13 through 21, wherein the second transmission is one of a plurality of second transmissions carrying a respectively corresponding plurality of eNB Tx beam indices.
  • example 23 the method of example 22, wherein the third transmission carries an eNB Tx beam index corresponding to the second transmission.
  • Example 24 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 13 through 23.
  • Example 25 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: means for generating one or more first transmissions carrying one or more respectively corresponding Physical Random Access Channels (PRACHs) for one or more respectively corresponding UE Transmit (Tx) beams; means for processing a second transmission carrying a UE Tx beam index corresponding to one of the PRACHs; and means for generating a third transmission for the UE Tx beam corresponding to the UE Tx beam index.
  • UE User Equipment
  • eNB Evolved Node B
  • example 26 the apparatus of example 25, wherein the UE Tx beam index is a one of: a PRACH slot index; or a time instance index; or a time instances group index.
  • example 27 the apparatus of either of examples 25 or 26, wherein the second transmission carries a Random Access Response (RAR) message.
  • RAR Random Access Response
  • a Random Access Radio Network Temporary Identifier (RA-RNTI) for the RAR message is determined by the UE Tx beam index.
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • Cyclic Redundancy Check (CRC) code sequence for a Downlink Control Information (DCI) is determined by a PRACH slot index.
  • UE Tx beam index is carried by an uplink grant.
  • UE Tx beam index determines one of: a subframe index; or a slot index; or a min-slot index.
  • example 32 the apparatus of any of examples 25 through 31, wherein the one or more first transmissions are associated with one or more respectively corresponding combinations of resources comprising at least one of: a PRACH preamble selected from a set of PRACH preambles, a time-domain resource selected from a set of time-domain resources, and a frequency-domain resource selected from a set of frequency-domain resources.
  • example 33 the apparatus of example 32, wherein, within the one or more combinations of resources, at least one of the resources is indexed consecutively
  • example 34 the apparatus of any of examples 25 through 33, wherein the second transmission is one of a plurality of second transmissions carrying a respectively corresponding plurality of eNB Tx beam indices.
  • example 35 the apparatus of example 34, wherein the third transmission carries an eNB Tx beam index corresponding to the second transmission.
  • Example 36 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User
  • UE operable to communicate with an Evolved Node-B (eNB) on a wireless network to perform an operation comprising: generate one or more first transmissions carrying one or more respectively corresponding Physical Random Access Channels
  • eNB Evolved Node-B
  • PRACHs for one or more respectively corresponding UE Transmit (Tx) beams; process a second transmission carrying a UE Tx beam index corresponding to one of the PRACHs; and generate a third transmission for the UE Tx beam corresponding to the UE Tx beam index.
  • the machine readable storage media of example 36 wherein the UE Tx beam index is a one of: a PRACH slot index; or a time instance index; or a time instances group index.
  • example 39 the machine readable storage media of example 38, wherein a
  • Random Access Radio Network Temporary Identifier for the RAR message is determined by the UE Tx beam index.
  • example 40 the machine readable storage media of any of examples 36 through 39, wherein a Cyclic Redundancy Check (CRC) code sequence for a Downlink Control Information (DCI) is determined by a PRACH slot index.
  • CRC Cyclic Redundancy Check
  • DCI Downlink Control Information
  • example 41 the machine readable storage media of any of examples 36 through 40, wherein the UE Tx beam index is carried by an uplink grant.
  • example 42 the machine readable storage media of any of examples 36 through 41, wherein the UE Tx beam index determines one of: a subframe index; or a slot index; or a min-slot index.
  • the machine readable storage media of any of examples 36 through 42, wherein the one or more first transmissions are associated with one or more respectively corresponding combinations of resources comprising at least one of: a PRACH preamble selected from a set of PRACH preambles, a time-domain resource selected from a set of time-domain resources, and a frequency-domain resource selected from a set of frequency-domain resources.
  • example 44 the machine readable storage media of example 43, wherein, within the one or more combinations of resources, at least one of the resources is indexed consecutively corresponding to a consecutive indexing of the one or more UE Tx beams.
  • example 45 the machine readable storage media of any of examples 36 through 44, wherein the second transmission is one of a plurality of second transmissions carrying a respectively corresponding plurality of eNB Tx beam indices.
  • example 46 the machine readable storage media of example 45, wherein the third transmission carries an eNB Tx beam index corresponding to the second
  • Example 47 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: one or more processors to: generate a first transmission carrying a Physical Random Access Channel (PRACH); process a second transmission carrying an Uplink (UL) grant for a Sounding Reference Signal (SRS); generate one or more third transmissions carrying one or more respectively corresponding SRSes for one or more respectively corresponding UE Transmit (Tx) beams; process a fourth transmission carrying a UE Tx beam index corresponding to one of the SRSes; and generate a fifth transmission for the UE Tx beam corresponding to the UE Tx beam index, and an interface for outputting the first transmission, the one or more third transmissions, and the fifth transmission to a transmission circuitry, and for receiving the second transmission and the fourth transmission from a receiving circuitry.
  • PRACH Physical Random Access Channel
  • SRS Sounding Reference Signal
  • Tx UE Transmit
  • example 48 the apparatus of example 47, wherein a preamble index for the
  • PRACH is in a first group if a UE antenna structure is omni-directional, and the preamble index for the PRACH is in a second group if the UE antenna structure is directional.
  • example 50 the apparatus of any of examples 47 through 49, wherein the second transmission carries a Random Access Response (RAR) message.
  • RAR Random Access Response
  • Example 51 provides a User Equipment (UE) device comprising an application processor, a memory, one or more antennas, a wireless interface for allowing the application processor to communicate with another device, and a touch-screen display, the UE device including the apparatus of any of examples 47 through 50.
  • UE User Equipment
  • Example 52 provides a method comprising: generating, for a User Equipment
  • UE a first transmission carrying a Physical Random Access Channel (PRACH); processing a second transmission carrying an Uplink (UL) grant for a Sounding Reference Signal (SRS); generating one or more third transmissions carrying one or more respectively corresponding SRSes for one or more respectively corresponding UE Transmit (Tx) beams; processing a fourth transmission carrying a UE Tx beam index corresponding to one of the SRSes; and generating a fifth transmission for the UE Tx beam corresponding to the UE Tx beam index.
  • PRACH Physical Random Access Channel
  • SRS Sounding Reference Signal
  • Tx UE Transmit
  • the method media of example 52, wherein a preamble index for the PRACH is in a first group if a UE antenna structure is omni-directional, and the preamble index for the PRACH is in a second group if the UE antenna structure is directional.
  • example 54 the method of either of examples 52 or 53, wherein the first transmission is generated for an omni-directional antenna.
  • example 55 the method of any of examples 52 through 54, wherein the second transmission carries a Random Access Response (RAR) message.
  • RAR Random Access Response
  • Example 56 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 52 through 55.
  • Example 57 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node-B (eNB) on a wireless network, comprising: means for generating a first transmission carrying a Physical Random Access Channel (PRACH);
  • UE User Equipment
  • eNB Evolved Node-B
  • PRACH Physical Random Access Channel
  • UL Uplink
  • SRS Sounding Reference Signal
  • example 58 the apparatus of example 57, wherein a preamble index for the
  • PRACH is in a first group if a UE antenna structure is omni-directional, and the preamble index for the PRACH is in a second group if the UE antenna structure is directional.
  • example 59 the apparatus of either of examples 57 or 58, wherein the first transmission is generated for an omni-directional antenna.
  • example 60 the apparatus of any of examples 57 through 59, wherein the second transmission carries a Random Access Response (RAR) message.
  • RAR Random Access Response
  • Example 61 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User
  • UE operable to communicate with an Evolved Node-B (eNB) on a wireless network to perform an operation comprising: generate a first transmission carrying a Physical Random Access Channel (PRACH); process a second transmission carrying an Uplink (UL) grant for a Sounding Reference Signal (SRS); generate one or more third transmissions carrying one or more respectively corresponding SRSes for one or more respectively corresponding UE Transmit (Tx) beams; process a fourth transmission carrying a UE Tx beam index corresponding to one of the SRSes; and generate a fifth transmission for the UE Tx beam corresponding to the UE Tx beam index.
  • PRACH Physical Random Access Channel
  • SRS Sounding Reference Signal
  • Tx UE Transmit
  • example 62 the machine readable storage media of example 61, wherein a preamble index for the PRACH is in a first group if a UE antenna structure is omnidirectional, and the preamble index for the PRACH is in a second group if the UE antenna structure is directional.
  • example 63 the machine readable storage media of either of examples 61 or
  • the first transmission is generated for an omni-directional antenna.
  • example 64 the machine readable storage media of any of examples 61 through 63, wherein the second transmission carries a Random Access Response (RAR) message.
  • RAR Random Access Response
  • example 65 the apparatus of any of examples 1 through 11 and 47 through
  • the one or more processors comprise a baseband processor.
  • example 66 the apparatus of any of examples 1 through 11 and 47 through
  • transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing transmissions, or decoding transmissions.
  • example 68 the apparatus of any of examples 1 through 11 and 47 through
  • transceiver circuitry for generating transmissions and processing transmissions.

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

Abstract

La présente invention concerne un appareil d'un équipement d'utilisateur (UE). L'appareil peut comprendre un premier circuit, un deuxième circuit et un troisième circuit. Le premier circuit peut être conçu pour générer une ou plusieurs premières transmissions transportant un ou plusieurs canaux PRACH (canaux physiques d'accès aléatoire) respectivement correspondants pour un ou plusieurs faisceaux Tx (faisceaux de transmission) d'UE respectivement correspondants. Le deuxième circuit peut être conçu pour traiter une deuxième transmission transportant un indice de faisceau Tx d'UE correspondant à un des canaux PRACH. Le troisième circuit peut être conçu pour générer une troisième transmission pour le faisceau Tx d'UE correspondant à l'indice de faisceau Tx d'UE.
PCT/US2017/043998 2016-07-26 2017-07-26 Signalisation de commande pour formation de faisceau de transmission d'un équipement d'utilisateur WO2018022782A1 (fr)

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WO2022082139A1 (fr) * 2020-10-16 2022-04-21 Qualcomm Incorporated Signal de référence de sondage (srs) déclenché dans une procédure de canal d'accès aléatoire (rach)
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