WO2018049274A1 - Procédures de canal d'accès aléatoire à faible latence destinées à des systèmes à formation de faisceau - Google Patents

Procédures de canal d'accès aléatoire à faible latence destinées à des systèmes à formation de faisceau Download PDF

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Publication number
WO2018049274A1
WO2018049274A1 PCT/US2017/050838 US2017050838W WO2018049274A1 WO 2018049274 A1 WO2018049274 A1 WO 2018049274A1 US 2017050838 W US2017050838 W US 2017050838W WO 2018049274 A1 WO2018049274 A1 WO 2018049274A1
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WIPO (PCT)
Prior art keywords
transmission
prach
index
circuitry
slot
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PCT/US2017/050838
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English (en)
Inventor
Gang Xiong
Qiaoyang Ye
Huaning Niu
Hong He
Seunghee Han
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Intel IP Corporation
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Publication of WO2018049274A1 publication Critical patent/WO2018049274A1/fr

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    • 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
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • 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) or New Radio (NR) wireless system / 5G mobile networks system.
  • Next-generation wireless cellular communication systems may present a unified approach to vastly different and sometimes conflicting performance dimensions, and may accommodate diverse multi-dimensional requirements driven by a variety of different potential services and applications.
  • Fig. 1 illustrates a procedure for contention-based random access in LTE, in accordance with some embodiments of the disclosure.
  • FIG. 2 illustrates a simplified random access procedure, in accordance with some embodiments of the disclosure.
  • FIG. 3 illustrates a scenario of a random access procedure in reciprocity, in accordance with some embodiments of the disclosure.
  • Fig. 4 illustrates random access transmission structures in the time domain, in accordance with some embodiments of the disclosure.
  • Fig. 5 illustrates a data packet structure in the time domain, in accordance with some embodiments of the disclosure.
  • Fig. 6 illustrates scenarios of Physical Random Access Channel (PRACH) and data packet multiplexing in a Time-Division Multiplexing (TDM) manner within the same subframe or slot, in accordance with some embodiments of the disclosure.
  • PRACH Physical Random Access Channel
  • TDM Time-Division Multiplexing
  • Fig. 7 illustrates a scenario of PRACH and data packet multiplexing in a TDM manner within different subframes or slots, in accordance with some embodiments of the disclosure.
  • Fig. 8 illustrates scenarios of PRACH and data packet multiplexing in a
  • Frequency-Division Multiplexing manner within the same subframe or slot, in accordance with some embodiments of the disclosure.
  • Fig. 9 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. 10 illustrates hardware processing circuitries for a UE for low-latency
  • PRACH transmission schemes and resource mapping schemes for PRACH preamble and data packet in accordance with some embodiments of the disclosure.
  • Fig. 11 illustrates methods for a UE for low-latency PRACH transmission schemes and resource mapping schemes for PRACH preamble and data packet, in accordance with some embodiments of the disclosure.
  • Fig. 12 illustrates methods for a UE for low-latency PRACH transmission schemes and resource mapping schemes for PRACH preamble and data packet, in accordance with some embodiments of the disclosure.
  • Fig. 13 illustrates example components of a device, in accordance with some embodiments of the disclosure.
  • Fig. 14 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 wireless system 5th Generation mobile networks
  • NR 5th Generation new radio
  • 5G systems may evolve from 3GPP LTE-Advanced systems incorporating additional Radio Access Technologies (RATs) that may advantageously facilitate simpler and more seamless wireless connectivity solutions.
  • 5G wireless communication systems may ultimately accommodate a wide variety of elements and may enhance speed and capability of delivered contents and services.
  • Fig. 1 illustrates a procedure for contention-based random access in LTE, in accordance with some embodiments of the disclosure.
  • a four-step Random Access Channel (RACH) procedure 100 between a UE 101 and an eNB 102 may comprise a first part 110, a second part 120, a third part 130, and a fourth part 140.
  • first part 110 UE 101 may transmit a random access preamble to eNB 102.
  • second part 120 eNB 102 may transmit a random access response to UE 101.
  • Uplink (UL) timing may be adjusted.
  • UE 101 may transmit an L2/L3 message to eNB 102.
  • eNB 102 may transmit one or more contention resolution transmissions to UE 101.
  • UE 101 may transmit a Physical Random Access Channel
  • PRACH Physical Uplink Control Channel
  • eNB 102 may feed back a Random Access Response (RAR), which may carry Timing Advance (TA) command information, and a UL grant for a UL transmission in third part 130.
  • RAR Random Access Response
  • TA Timing Advance
  • UE 101 may expect receipt of the RAR within a time window, the start and the end of which may be configured by eNB 102 via a System Information Block (SIB).
  • SIB System Information Block
  • a simplified RACH procedure may facilitate fast access and low-latency UL transmission. For instance, a four-step RACH procedure may be reduced to two steps, where UE may combine first part 110 and third part 130 of a RACH procedure to facilitate low-latency PRACH transmission.
  • LBT Listen-Before-Talk
  • a UE may be disposed to performing an LBT procedure before transmission of a PRACH preamble (e.g., in first part 110) as well as performing an LBT procedure before transmission of a Message 3 (Msg-3) in third part 130.
  • an eNB may be disposed to performing an LBT procedure before transmission of an RAR in second part 120 as well as performing an LBT procedure before transmission a Message 4 (Msg-4) in fourth part 140.
  • Msg-4 Message 4
  • high-frequency band communication may facilitate wider bandwidths to support future integrated communication systems.
  • beamforming may facilitate implementation of high-frequency band systems as a result of beamforming gains, which may compensate for severe path loss related to by atmospheric attenuation, may improve a Signal-to-Noise Ratio (SNR), and may enlarge a coverage area.
  • SNR Signal-to-Noise Ratio
  • low-latency RACH procedure for high-frequency band systems to accommodate beamforming at an eNB, a UE, or both.
  • Some embodiments may incorporate low-latency PRACH transmission procedures.
  • Some embodiments may incorporate resource mapping schemes for PRACH preambles and data packets.
  • Some embodiments may incorporate mechanisms for multiplexing of low-latency PRACH transmissions and legacy PRACH transmissions.
  • 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. [0029] Throughout the specification, and in the claims, the term "connected" 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.
  • 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, a centimeter-wave (cmWave) capable eNB or a cmWave small cell, a millimeter-wave (mmWave) capable eNB or an mmWave small cell, an Access Point, and/or another base station for a wireless communication system.
  • eNB may refer to a legacy LTE capable Evolved Node-B (eNB), a next-generation or 5G capable eNB, a centimeter-wave (cmWave) capable eNB or a cmWave small cell, a millimeter-wave (mmWave) capable eNB or an mmWave small cell, an Access Point, and/or another base station for a wireless communication system.
  • the term "gNB” may refer to a next-generation or 5G capable eNB, a centimeter-wave (cmWave) capable eNB or a cmWave small cell, a millimeter-wave (mmWave) capable eNB or an mmWave small cell, a 5G Access Point, and/or another 5G base station for a wireless communication system. Structures and methods discussed herein as pertaining to eNBs may also pertain to gNBs.
  • the term "UE” may refer to a legacy LTE capable User Equipment (UE), a next-generation or 5G capable UE, a cmWave capable UE, an mmWave capable UE, a Station (STA), and/or another mobile equipment for a wireless communication system.
  • UE User Equipment
  • 5G capable UE a next-generation or 5G capable UE
  • cmWave capable UE a cmWave capable UE
  • an mmWave capable UE an mmWave capable UE
  • STA Station
  • Various embodiments of eNBs and/or UEs discussed below may process one or more transmissions of various types. Some processing of a transmission may comprise demodulating, decoding, detecting, parsing, and/or otherwise handling a transmission that has been received.
  • an eNB or UE processing a transmission may determine or recognize the transmission's type and/or a condition associated with the transmission. For some embodiments, an eNB or UE processing a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type. An eNB or UE processing a transmission may also recognize one or more values or fields of data carried by the transmission.
  • Processing a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission that has been received by an eNB or a UE through one or more layers of a protocol stack.
  • a protocol stack which may be implemented in, e.g., hardware and/or software-configured elements
  • Various embodiments of eNBs and/or UEs discussed below may also generate one or more transmissions of various types. Some generating of a transmission may comprise modulating, encoding, formatting, assembling, and/or otherwise handling a transmission that is to be transmitted. In some embodiments, an eNB or UE generating a transmission may establish the transmission's type and/or a condition associated with the transmission.
  • an eNB or UE generating a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type.
  • An eNB or UE generating a transmission may also determine one or more values or fields of data carried by the transmission.
  • Generating a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission to be sent by an eNB or a UE through one or more layers of a protocol stack.
  • resources may span various Resource Blocks (RBs),
  • PRBs Physical Resource Blocks
  • time periods e.g., frames, subframes, and/or slots
  • allocated resources e.g., channels, Orthogonal Frequency -Division Multiplexing (OFMD) symbols, subcarrier frequencies, resource elements (REs), and/or portions thereof
  • OFMD Orthogonal Frequency -Division Multiplexing
  • REs resource elements
  • allocated resources e.g., channels, OFDM symbols, subcarrier frequencies, REs, and/or portions thereof
  • allocated resources e.g., channels, OFDM symbols, subcarrier frequencies, REs, and/or portions thereof
  • FIG. 2 illustrates a simplified random access procedure, in accordance with some embodiments of the disclosure.
  • a two-step RACH procedure 200 between a UE 201 and an eNB 202 may comprise a first part 210 and a second part 220.
  • First part 210 may comprise a PRACH transmission with a temporary and/or assigned Cell Radio Network Temporary Identifier (C-RNTI), a Buffer Status Report (BSR), and/or a Msg-3, which may carry or otherwise include a UE Identity.
  • C-RNTI Cell Radio Network Temporary Identifier
  • BSR Buffer Status Report
  • Msg-3 Msg-3
  • Second part 220 may comprise a 5G Physical Downlink Control Channel (xPDCCH), which may carry or otherwise include a UE's assigned C-RNTI, a Random Access Radio Network Temporary Identifier (RA-RNTI), and/or an RAR, and/or another message.
  • xPDCCH 5G Physical Downlink Control Channel
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • RAR Radio Access Radio Network Temporary Identifier
  • a four-step RACH procedure may be simplified to a two-step RACH procedure, in which in a first step, a UE may transmit a PRACH preamble together with a data packet carrying or otherwise including a UE ID, BSR information, a Common Control Channel (CCCH) subheader, and/or an Msg-3.
  • a UE may transmit a PRACH preamble together with a data packet carrying or otherwise including a UE ID, BSR information, a Common Control Channel (CCCH) subheader, and/or an Msg-3.
  • CCCH Common Control Channel
  • BRSes may be transmitted from an eNB to allow a UE to measure a BRS Received Power (BRS-RP) and determine or obtain an optimal, preferable, or otherwise best eNB Transmit (Tx) beam and an optimal, preferable, or otherwise best UE Receive (Rx) beam.
  • BRS-RP BRS Received Power
  • Tx optimal, preferable, or otherwise best eNB Transmit
  • Rx optimal, preferable, or otherwise best UE Receive
  • the BRSes may comprise one or more
  • a UE may transmit a xPRACH for UL
  • FIG. 3 illustrates a scenario of a random access procedure in reciprocity, in accordance with some embodiments of the disclosure.
  • a scenario 300 may comprise one or more BRS APs 310 (e.g., a BRS AP #0, a BRS AP #1, a BRS AP #2, and/or a BRS AP #3).
  • a BRS may be an SSB
  • a BRS AP may accordingly be an SSB AP.
  • the one or more BRS APs may be associated with one or more respectively corresponding eNB Tx beams, which may in turn be associated with one or more respectively corresponding Orthogonal Frequency-Division Multiplexing (OFDM) symbols.
  • BRS APs 310 may span fourteen OFDM symbols, which may have indices from 0 through 13.
  • Scenario 300 may also comprise one or more xPRACH frequency resources
  • the one or more xPRACH frequency resources may be associated with one or more respectively corresponding xPRACH slots.
  • xPRACH frequency resources 320 may span five xPRACH slots, which may have indices from 0 through 4.
  • Scenario 300 may correspond with a RACH procedure in a case of perfect reciprocity.
  • a best eNB Tx beam may be located at BRS AP #0 (which may correspond with a BRS beam group #0) and at an OFDM symbol number 2.
  • a UE may correspondingly transmit an xPRACH in an associated xPRACH resource (which may correspond with xPRACH frequency resource #1) and at an xPRACH slot number 2.
  • the xPRACH resource may be a third xPRACH slot in a subframe #5 or slot #5 (e.g., a low-latency PRACH subframe and/or a RAT slot).
  • a UE may randomly select one frequency resource for xPRACH transmission. For example, as depicted, the UE may choose xPRACH frequency resource #1 for xPRACH transmission.
  • Fig. 4 illustrates random access transmission structures in the time domain, in accordance with some embodiments of the disclosure.
  • one low-latency PRACH transmission may comprise a PRACH preamble and a data packet.
  • the PRACH preamble may span or more symbols.
  • one long PRACH preamble may be used in some embodiments (e.g., as depicted in a case 410), or multiple short PRACH preambles may be used in some embodiments (e.g., as depicted in a case 420 and a case 430).
  • a cyclic prefix may be present between multiple short PRACH preambles (as in case 420), and for some embodiments, a CP may not be present between multiple short PRACH preambles (as in case 430).
  • a guard period may be used for PRACH transmission.
  • the GP may follow a PRACH preamble.
  • a PRACH preamble and a data packet are multiplexed in a Time-Division
  • TDM Multiplexing
  • GP guard period
  • Fig. 5 illustrates a data packet structure in the time domain, in accordance with some embodiments of the disclosure.
  • two symbols e.g., two OFDM symbols
  • a CP may be used for (e.g., inserted before) each symbol.
  • a GP may be used (e.g., inserted after) the last part of data packet transmission, in a manner similar to the transmission of a PRACH preamble.
  • the same transmission timing may be used for a
  • PRACH preamble and a data packet may be applied for PRACH preamble transmission and data packet transmission.
  • subcarrier spacing or different subcarrier spacing may be applied for PRACH preamble transmission and data packet transmission.
  • a PRACH preamble signature index may be used to generate a scrambling sequence for a data packet.
  • a scrambling seed may be defined as (or otherwise based upon) one or more of following parameters: a physical cell identity (ID) and/or a virtual cell ID; a frame index, a subframe index (which may be a low-latency PRACH subframe index or a RAT slot index), a slot index (which may be a PRACH slot index or a low-latency PRACH slot index), a symbol index, a PRB index, a sub-band index, and/or a frequency resource index used for the PRACH transmission; and/or a PRACH preamble signature index.
  • the scrambling seed may be established or determined by:
  • cinit f (Nfv tt , n SF , I PRACH )
  • the scrambling seed may be established or determined by:
  • n ⁇ req PRACH may be a frequency resource index for the PRACH transmission.
  • multiple UEs may randomly select different PRACH preamble signatures for PRACH transmission.
  • the data packets may advantageously be decodable with different scrambling sequences.
  • the data packets may be decodable if an eNB implements an interference-cancellation type of receiver, such as a Minimum Mean-Square Error Successive Interference Cancellation (MMSE-SIC) receiver.
  • MMSE-SIC Minimum Mean-Square Error Successive Interference Cancellation
  • a PRACH preamble signature index and/or a frequency resource index may be used to mask a Cyclic Redundancy Check (CRC) used for transmission of the data packet, which may advantageously serve a verification purpose.
  • CRC Cyclic Redundancy Check
  • the transmit power may be used to transmit the
  • an eNB may estimate a channel from PRACH and may apply the estimated channel for demodulation and/or decoding of the data packet.
  • DMRS Demodulation Reference Signal
  • a UE may perform a random backoff procedure if it does not receive an RAR during an RAR window. For some embodiments, if a maximum number of low-latency RACH attempts are reached, a UE may fall back to another RACH procedure, such as a legacy four-step RACH procedure.
  • the eNB when an eNB can successfully detect a PRACH preamble but fails to decode a data packet, in a second part or second step of the RACH procedure, the eNB may transmit an RAR in accordance with a legacy RACH procedure. Subsequently, a UE may send an Msg-3 in accordance with a legacy RACH procedure.
  • a PRACH preamble portion of a transmission and a data packet portion of a transmission may be multiplexed in a TDM manner, or in a
  • Frequency-Division Multiplexing (FDM) manner or in a combination thereof.
  • the same UE Tx beam may be applied for both the PRACH preamble portion of the transmission and the data packet portion of the transmission, which may advantageously facilitate or achieve adequate coverage for the UL transmission.
  • Various of embodiments of the resource mapping for a PRACH preamble and a data packet for a low-latency RACH transmission are discussed herein.
  • Fig. 6 illustrates scenarios of PRACH and data packet multiplexing in a TDM manner within the same subframe or slot, in accordance with some embodiments of the disclosure.
  • a PRACH preamble portion of a transmission and a data packet portion of the transmission may be multiplexed in a TDM manner within the same subframe or slot.
  • the frequency resources used for the PRACH preamble portion of the transmission may be the same as the frequency resources used for the data packet portion of the transmission.
  • the frequency resources used for the PRACH preamble portion of the transmission may different than the frequency resources used for the data packet portion of the transmission.
  • the data packet portion may use more frequency resources than the PRACH preamble portion, while in some embodiments, the data packet portion may use fewer frequency resources than the PRACH preamble portion.
  • the PRACH preamble portion may serve as DMRS for demodulation and/or decoding of the data packet.
  • a UE may randomly select one PRACH resource for PRACH transmission, and the frequency resource used for PRACH transmission may also be used for data packet transmission.
  • SC-FDMA Single-Carrier Frequency -Division Multiple Access
  • PAPR Peak to Average Power Ratio
  • a low-latency PRACH subframe or slot may comprise
  • a PRACH preamble and a data packet may be transmitted in a low-latency PRACH slot, which may be one-to-one associated with an eNB Tx beam or BRS AP (similar to the association rule discussed with respect to Fig. 3).
  • Various embodiments may support other transmission durations for a PRACH preamble and a data packet. For example, in some embodiments, two symbols may be allocated for a PRACH preamble and two symbols may be allocated for a data packet.
  • a data packet may occupy more frequency resources than a PRACH preamble, which may advantageously accommodate relatively larger data payload sizes.
  • a PRACH preamble and a data packet may be multiplexed in a TDM manner in different subframes or slots.
  • the same Tx beam applied to the transmission of the PRACH preamble may be applied to the transmission of the data packet.
  • the same low-latency RPACH slot used for PRACH preamble transmission may be used for data packet transmission in two subframes or slots, where the selected low-latency PRACH slot may be associated with a best eNB Tx beam and/or a BRS AP.
  • Fig. 7 illustrates a scenario of PRACH and data packet multiplexing in a TDM manner within different subframes or slots, in accordance with some embodiments of the disclosure.
  • a PRACH preamble may be transmitted in a first subframe or slot 712
  • a corresponding data packet may be transmitted in a second subframe or slot 714 (e.g., one subframe or slot after first subframe or slot 712).
  • the same low-latency PRACH slot e.g., a PRACH slot #2
  • used for PRACH preamble transmission in first subframe or slot 712 may be used for data packet transmission in second subframe or slot 714.
  • different frequency resources may be used for transmission of a PRACH preamble and a data packet.
  • a data packet may advantageously occupy more resources than a PRACH preamble to accommodate a large packet size.
  • resources used for transmission of data packet may be defined as a function of a frequency resource index for the PRACH preamble and/or a PRACH preamble signature index.
  • a UE may select one resource for data packet as:
  • I DATA (0, ⁇ ⁇ ⁇ , M— 1 ⁇ may be a data packet resource index
  • IPRACH ma y De a PRACH preamble signature index
  • nj req PRACE may be a frequency resource index for the PRACH transmission (e.g., the PRACH preamble transmission).
  • a dedicated DMRS may be inserted for the transmission of the data packet. This may accommodate an estimated channel from the PRACH preamble, which might not be applied for demodulation and/or decoding of data packet.
  • a DMRS sequence may be defined as a function of a PRACH preamble signature index.
  • a root index may be defined as a function of a cell ID, and/or a cyclic shift value may be defined as a function of at least a PRACH preamble signature index.
  • a PRACH preamble and a data packet may be multiplexed in an FDM manner within the same subframe or slot.
  • a low-latency PRACH slot (which may be associated with a best eNB Tx beam or a BRS AP) may be used for PRACH preamble transmission and data packet transmission, and the same low-latency PRACH slot may be used for data packet transmission.
  • a guard band e.g., a GP
  • a guard band may be inserted between the PRACH preamble and the data packet.
  • Some embodiments may use a dedicated DMRS for demodulation of the data packet. Some embodiments may define a DMRS sequence as a function of PRACH preamble signature index, which may advantageously help differentiate DMRS from different UEs.
  • Fig. 8 illustrates scenarios of PRACH and data packet multiplexing in an
  • a PRACH preamble portion of a transmission and a data packet portion of the transmission may be multiplexed in an FDM manner within the same subframe or slot.
  • the frequency resources used for the data packet portion of the transmission may be at higher frequencies than the frequency resources used for the PRACH preamble portion of the transmission.
  • the frequency resources used for the data packet portion of the transmission may be at lower frequencies than the frequency resources used for the PRACH preamble portion of the transmission.
  • the frequency resources used for the data packet portion of the transmission may be located around the frequency resources used for the PRACH preamble portion of the transmission (e.g., the frequency resources used for the PRACH preamble may be between the frequency resources used for the data packet).
  • a UE may select either frequency resources for data packet transmission based on a parity of a PRACH preamble signature index. For instance, for a PRACH preamble signature of a first parity (e.g., an even parity), a UE may select frequency resources for the data packet that are at frequencies higher than the frequency resources for the PRACH preamble, while for PRACH preamble signature of a second parity opposite from the first parity (e.g., an odd parity), the UE may select frequency resources for the data packet that are at frequencies lower than the frequency resources for the PRACH preamble.
  • a first parity e.g., an even parity
  • PRACH preamble signature of a second parity opposite from the first parity e.g., an odd parity
  • an eNB may attempt to first detect a PRACH preamble and then decode a data packet.
  • Dedicated resources for low-latency PRACH transmission may be advantageous in reducing receiver complexity on the eNB side. For example, an eNB may merely decode a data packet for a detected PRACH preamble on a dedicated resource reserved for a low-latency RACH procedure.
  • PRACH resources for low-latency RACH procedures are provided.
  • a resource partition may be predefined, or may be configured by higher layers via an NR Master Information Block (xMIB) and/or an NR Minimum System Information (MSI), an NR SIB (xSIB) and/or an NR Remaining Minimum System Information (RMSI), an NR Other System Information (OSI), and/or Radio Resource Control (RRC) signaling.
  • xMIB NR Master Information Block
  • MSI NR Minimum System Information
  • xSIB NR SIB
  • RMSI NR Remaining Minimum System Information
  • OSI NR Other System Information
  • RRC Radio Resource Control
  • one or more PRACH preamble signature sequences may be reserved for PRACH transmission for a low-latency RACH procedure.
  • one or more frequency resources may be allocated for PRACH transmission for a low-latency RACH procedure.
  • one or more time resources may be allocated for PRACH transmission for a low-latency RACH procedure.
  • PRACH for a legacy RACH procedure may be transmitted in a subframe or slot number 0 in one radio frame, and/or PRACH for a low-latency RACH procedure may be transmitted in a subframe or slot number 25 in one radio frame.
  • FDM based multiplexed schemes, and/or CDM based multiplexed schemes may be used to separate one or more resources for a low-latency RACH procedure from one or more resources for a legacy RACH procedure.
  • Fig. 9 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure.
  • Fig. 9 includes block diagrams of an eNB 910 and a UE 930 which are operable to co-exist with each other and other elements of an LTE network. High-level, simplified architectures of eNB 910 and UE 930 are described so as not to obscure the embodiments. It should be noted that in some embodiments, eNB 910 may be a stationary non-mobile device.
  • eNB 910 is coupled to one or more antennas 905, and UE 930 is similarly coupled to one or more antennas 925.
  • eNB 910 may incorporate or comprise antennas 905, and UE 930 in various embodiments may incorporate or comprise antennas 925.
  • antennas 905 and/or antennas 925 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 905 are separated to take advantage of spatial diversity.
  • eNB 910 and UE 930 are operable to communicate with each other on a network, such as a wireless network.
  • eNB 910 and UE 930 may be in communication with each other over a wireless communication channel 950, which has both a downlink path from eNB 910 to UE 930 and an uplink path from UE 930 to eNB 910.
  • eNB 910 may include a physical layer circuitry 912, a MAC (media access control) circuitry 914, a processor 916, a memory 918, and a hardware processing circuitry 920.
  • MAC media access control
  • physical layer circuitry 912 includes a transceiver 913 for providing signals to and from UE 930.
  • Transceiver 913 provides signals to and from UEs or other devices using one or more antennas 905.
  • MAC circuitry 914 controls access to the wireless medium.
  • Memory 918 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 920 may comprise logic devices or circuitry to perform various operations.
  • processor 916 and memory 918 are arranged to perform the operations of hardware processing circuitry 920, such as operations described herein with reference to logic devices and circuitry within eNB 910 and/or hardware processing circuitry 920.
  • eNB 910 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 930 may include a physical layer circuitry 932, a MAC circuitry 934, a processor 936, a memory 938, a hardware processing circuitry 940, a wireless interface 942, and a display 944.
  • a physical layer circuitry 932 may include a physical layer circuitry 932, a MAC circuitry 934, a processor 936, a memory 938, a hardware processing circuitry 940, a wireless interface 942, and a display 944.
  • 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 932 includes a transceiver 933 for providing signals to and from eNB 910 (as well as other eNBs). Transceiver 933 provides signals to and from eNBs or other devices using one or more antennas 925.
  • MAC circuitry 934 controls access to the wireless medium.
  • Memory 938 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 942 may be arranged to allow the processor to communicate with another device.
  • Display 944 may provide a visual and/or tactile display for a user to interact with UE 930, such as a touch-screen display.
  • Hardware processing circuitry 940 may comprise logic devices or circuitry to perform various operations.
  • processor 936 and memory 938 may be arranged to perform the operations of hardware processing circuitry 940, such as operations described herein with reference to logic devices and circuitry within UE 930 and/or hardware processing circuitry 940.
  • UE 930 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. 10 and 13-14 also depict embodiments of eNBs, hardware processing circuitry of eNBs, UEs, and/or hardware processing circuitry of UEs, and the embodiments described with respect to Fig. 9 and Figs. 10 and 13-14 can operate or function in the manner described herein with respect to any of the figures.
  • eNB 910 and UE 930 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. 10 illustrates hardware processing circuitries for a UE for a UE for low- latency PRACH transmission schemes and resource mapping schemes for PRACH preamble and data packet, in accordance with some embodiments of the disclosure.
  • a UE may include various hardware processing circuitries discussed herein (such as hardware processing circuitry 1000 of Fig. 10), which may in turn comprise logic devices and/or circuitry operable to perform various operations.
  • UE 930 (or various elements or components therein, such as hardware processing circuitry 940, 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 936 and/or one or more other processors which UE 930 may comprise
  • memory 938 and/or other elements or components of UE 930 (which may include hardware processing circuitry 940) 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 936 (and/or one or more other processors which UE 930 may comprise) may be a baseband processor.
  • an apparatus of UE 930 (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 1000.
  • hardware processing circuitry 1000 may comprise one or more antenna ports 1005 operable to provide various transmissions over a wireless communication channel (such as wireless
  • Antenna ports 1005 may be coupled to one or more antennas 1007 (which may be antennas 925).
  • hardware processing circuitry 1000 may incorporate antennas 1007, while in other embodiments, hardware processing circuitry 1000 may merely be coupled to antennas 1007.
  • Antenna ports 1005 and antennas 1007 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 1005 and antennas 1007 may be operable to provide transmissions from UE 930 to wireless communication channel 950 (and from there to eNB 910, or to another eNB).
  • antennas 1007 and antenna ports 1005 may be operable to provide transmissions from a wireless communication channel 950 (and beyond that, from eNB 910, or another eNB) to UE 930.
  • Hardware processing circuitry 1000 may comprise various circuitries operable in accordance with the various embodiments discussed herein. With reference to Fig. 10, hardware processing circuitry 1000 may comprise a first circuitry 1010, a second circuitry 1020, a third circuitry 1030, a fourth circuitry 1040, and/or a fifth circuitry 1050.
  • first circuitry 1010 may be operable to determine a
  • Second circuitry 1020 may be operable to generate, for the UE Tx beam and for one or more physical resources, a transmission having a first part carrying a PRACH preamble portion and a second part carrying a data portion.
  • First circuitry 1010 may be operable to provide information regarding the UE Tx beam, such as identification information regarding the UE Tx beam, to second circuitry 1020 via an interface 1012.
  • the one or more physical resources may include one or more time resources and/or or one or more frequency resources.
  • hardware processing circuitry 1000 may also comprise an interface for sending the transmission to a transceiver circuitry.
  • the physical resources may be associated an identified eNB Tx beam or a BRS AP.
  • the transmission may carry a UE identifier, a BSR, and/or a Message 3.
  • third circuitry 1030 may be operable to generate a scrambling sequence for the second part of the transmission based upon the PRACH preamble signature index.
  • Third circuitry 1030 may provide the information regarding the scrambling seed (such as identifying information) to first circuitry 1010 via an interface 1032.
  • fourth circuitry 1040 may be operable to define a scrambling seed based on a physical cell ID, a virtual cell ID, a frame index, a subframe index, a slot index, a symbol index, a PRB index, a sub-band index, a frequency resource index, and/or the PRACH preamble signature index.
  • Fourth circuitry 1040 may be operable to provide information regarding the scrambling seed to third circuitry 1030 via an interface 1042.
  • third circuitry 1030 may also be operable to mask a CRC for the second part of the transmission based upon the PRACH preamble signature index and/or a frequency resource index.
  • a transmit power may be used for the first part of the transmission is substantially the same as a transmit power used for the second part of the transmission.
  • fifth circuitry 1050 may be operable to monitor for receipt of a RAR during an RAR window.
  • second circuitry 1020 may additionally be operable to initiate a random backoff procedure comprising generation of one or more additional transmissions carrying the PRACH preamble signature index if no RAR is received during the RAR window.
  • fifth circuitry 1050 may also be operable to monitor for receipt of an RAR during the random backoff procedure.
  • second circuitry 1020 may also be additionally operable to initiate a four-step RACH procedure if no RAR is received during the random backoff procedure.
  • Fifth circuitry 1050 may be operable to provide information regarding the random backoff procedure and/or the four-step RACH procedure (such as an indicator that the random backoff procedure and/or the four-step RACH procedure, respectively, should be initiated) via an interface 1052.
  • the one or more physical resources may be configured by an xMIB, an xSIB, and/or RRC signaling.
  • a PRACH preamble signature sequence, and/or a set of time resources, and/or a set of frequency resources may be reserved for the transmission.
  • first circuitry 1010 may be operable to determine a
  • Second circuitry 1020 may be operable to generate a first part of the transmission carrying a PRACH preamble portion, for the UE Tx beam and for one or more physical resources. Second circuitry 1020 may also be operable to generate a second part of the transmission carrying a data portion, for the UE Tx beam and for the one or more physical resources. The physical resources may be associated with an identified eNB Tx beam and/or a BRS AP. First circuitry 1010 may be operable to provide information regarding the UE Tx beam (such as identification information regarding the UE Tx beam) to second circuitry 1020 via an interface 1012. In some embodiments, hardware processing circuitry 1000 may also comprise an interface for sending the transmission to a transceiver circuitry.
  • the one or more physical resources may include one or more time resources and/or one or more frequency resources.
  • the first part of the transmission and the second part of the transmission may be multiplexed in a TDM manner, an FDM manner, or both.
  • the first part of the transmission and the second part of the transmission are multiplexed in a TDM manner within the same subframe or slot.
  • the one or more physical resources may be randomly selected.
  • the first part of the transmission may be generated for a slot within a first subframe or slot.
  • the second part of the transmission may be generated for the same slot within a second subframe or slot.
  • the slot may be associated with an identified eNB Tx beam and/or a BRS AP.
  • the one or more physical resources may be determined based on a frequency resource index for the transmission, and/or the PRACH preamble signature index.
  • the second part of the transmission may comprise a DMRS.
  • a DMRS sequence associated with the DMRS are based on the PRACH preamble signature index.
  • the first part of the transmission and the second part of the transmission may be multiplexed in an FDM manner within the same subframe or slot.
  • the second part of the transmission may comprise a DMRS.
  • a DMRS sequence associated with the DMRS may be based on the PRACH preamble signature index.
  • first circuitry 1010, second circuitry 1020, third circuitry 1030, fourth circuitry 1040, and/or fifth circuitry 1050 may be implemented as separate circuitries. In other embodiments, first circuitry 1010, second circuitry 1020, third circuitry 1030, fourth circuitry 1040, and/or fifth circuitry 1050 may be combined and implemented together in a circuitry without altering the essence of the embodiments.
  • Fig. 11 illustrates methods for a UE for a UE for low-latency PRACH transmission schemes and resource mapping schemes for PRACH preamble and data packet, in accordance with some embodiments of the disclosure.
  • Fig. 12 illustrates methods for a UE for a UE for low-latency PRACH transmission schemes and resource mapping schemes for PRACH preamble and data packet, in accordance with some embodiments of the disclosure.
  • methods that may relate to UE 930 and hardware processing circuitry 940 are discussed herein.
  • the actions in the method 1 100 of Fig. 11 and method 1200 of Fig. 12 are shown in a particular order, the order of the actions can be modified.
  • Figs. 11 and 12 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 930 and/or hardware processing circuitry 940 to perform an operation comprising the methods of Figs. 11 and 12.
  • 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 fiash-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. 11 and 12.
  • a method 1 100 may comprise a determining 11 10 and a generating 1 115.
  • Method 1100 may also comprise a generating 1120, a defining 1 125, a masking 1130, a monitoring 1 140, an initiating 1 145, a monitoring 1 150, and/or an initiating 1 155.
  • a UE Tx beam may be determined for a transmission carrying a PRACH preamble and/or a PRACH preamble signature index.
  • a transmission having a first part carrying a PRACH preamble portion and a second part carrying a data portion may be generated for the UE Tx beam and for one or more physical resources.
  • the one or more physical resources may include one or more time resources and/or one or more frequency resources.
  • the physical resources may be associated an identified eNB Tx beam or a BRS AP.
  • the transmission may carry a UE identifier, a BSR, and/or a Message 3.
  • a scrambling sequence may be generated for the second part of the transmission based upon the PRACH preamble signature index.
  • a scrambling seed based on a physical cell ID, a virtual cell ID, a frame index, a subframe index, a slot index, a symbol index, a PRB index, a sub-band index, a frequency resource index, and/or the PRACH preamble signature index may be defined.
  • a CRC for the second part of the transmission may be masked based upon the PRACH preamble signature index and/or a frequency resource index.
  • a transmit power may be used for the first part of the transmission is substantially the same as a transmit power used for the second part of the transmission.
  • RAR window may be monitored for.
  • a random backoff procedure comprising generation of one or more additional transmissions carrying the PRACH preamble signature index may be initiated if no RAR is received during the RAR window.
  • receipt of an RAR during the random backoff procedure may be monitored for.
  • a four-step RACH procedure may be initiated if no RAR is received during the random backoff procedure.
  • the one or more physical resources may be configured by an xMIB, an xSIB, and/or RRC signaling.
  • a PRACH preamble signature sequence, and/or a set of time resources, and/or a set of frequency resources may be reserved for the transmission.
  • a method 1200 may comprise a determining 1210, a generating 1215, and a generating 1220.
  • determining 1210 a UE Tx beam for a transmission carrying a PRACH preamble and/or a PRACH preamble signature index may be determined.
  • generating 1215 a first part of the transmission carrying a PRACH preamble portion may be generated for the UE Tx beam and for one or more physical resources.
  • generating 1220 a second part of the transmission carrying a data portion may be generated for the UE Tx beam and for the one or more physical resources.
  • the physical resources may be associated with an identified eNB Tx beam and/or or a BRS AP [00118]
  • the one or more physical resources may include one or more time resources and/or one or more frequency resources.
  • the first part of the transmission and the second part of the transmission may be multiplexed in a TDM manner, an FDM manner, or both.
  • the first part of the transmission and the second part of the transmission are multiplexed in a TDM manner within the same subframe or slot.
  • the one or more physical resources may be randomly selected.
  • the first part of the transmission may be generated for a slot within a first subframe or slot.
  • the second part of the transmission may be generated for the same slot within a second subframe or slot.
  • the slot may be associated with an identified eNB Tx beam and/or a BRS AP.
  • the one or more physical resources may be determined based on a frequency resource index for the transmission, and/or the PRACH preamble signature index.
  • the second part of the transmission may comprise a DMRS.
  • a DMRS sequence associated with the DMRS are based on the PRACH preamble signature index.
  • the first part of the transmission and the second part of the transmission may be multiplexed in an FDM manner within the same subframe or slot.
  • the second part of the transmission may comprise a DMRS.
  • a DMRS sequence associated with the DMRS may be based on the PRACH preamble signature index.
  • Fig. 13 illustrates example components of a device, in accordance with some embodiments of the disclosure.
  • the device 1300 may include application circuitry 1302, baseband circuitry 1304, Radio Frequency (RF) circuitry 1306, front-end module (FEM) circuitry 1308, one or more antennas 1310, and power management circuitry (PMC) 1312 coupled together at least as shown.
  • the components of the illustrated device 1300 may be included in a UE or a RAN node.
  • the device 1300 may include less elements (e.g., a RAN node may not utilize application circuitry 1302, and instead include a processor/controller to process IP data received from an EPC).
  • the device 1300 may include 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).
  • the application circuitry 1302 may include one or more application processors.
  • the application circuitry 1302 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, and so on).
  • 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 1300.
  • processors of application circuitry 1302 may process IP data packets received from an EPC.
  • the baseband circuitry 1304 may include circuitry such as, but not limited to, one or more single-core or multi-core processors.
  • the baseband circuitry 1304 may include one or more baseband processors or control logic to process baseband signals received from a receive signal path of the RF circuitry 1306 and to generate baseband signals for a transmit signal path of the RF circuitry 1306.
  • Baseband processing circuity 1304 may interface with the application circuitry 1302 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 1306.
  • the baseband circuitry 1304 may include a third generation (3G) baseband processor 1304A, a fourth generation (4G) baseband processor 1304B, a fifth generation (5G) baseband processor 1304C, or other baseband processor(s) 1304D for other existing generations, generations in development or to be developed in the future (e.g., second generation (2G), sixth generation (6G), and so on).
  • the baseband circuitry 1304 e.g., one or more of baseband processors 1304A-D
  • baseband processors 1304A-D may be included in modules stored in the memory 1304G and executed via a Central Processing Unit (CPU) 1304E.
  • the radio control functions may include, but are not limited to, signal modulation/demodulation,
  • modulation/demodulation circuitry of the baseband circuitry 1304 may include Fast-Fourier Transform (FFT), precoding, or constellation mapping/demapping functionality.
  • FFT Fast-Fourier Transform
  • encoding/decoding circuitry of the baseband circuitry 1304 may include convolution, tail-biting convolution, turbo, Viterbi, or Low Density Parity Check (LDPC) encoder/decoder functionality.
  • LDPC Low Density Parity Check
  • the baseband circuitry 1304 may include one or more audio digital signal processor(s) (DSP) 1304F.
  • the audio DSP(s) 1304F 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 1304 and the application circuitry 1302 may be implemented together such as, for example, on a system on a chip (SOC).
  • SOC system on a chip
  • the baseband circuitry 1304 may provide for communication compatible with one or more radio technologies.
  • the baseband circuitry 1304 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 1304 is configured to support radio communications of more than one wireless protocol.
  • RF circuitry 1306 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium.
  • the RF circuitry 1306 may include switches, filters, amplifiers, and so on to facilitate the communication with the wireless network.
  • RF circuitry 1306 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 1308 and provide baseband signals to the baseband circuitry 1304.
  • RF circuitry 1306 may also include a transmit signal path which may include circuitry to up-convert baseband signals provided by the baseband circuitry 1304 and provide RF output signals to the FEM circuitry 1308 for transmission.
  • the receive signal path of the RF circuitry 1306 may include mixer circuitry 1306A, amplifier circuitry 1306B and filter circuitry 1306C.
  • the transmit signal path of the RF circuitry 1306 may include filter circuitry 1306C and mixer circuitry 1306A.
  • RF circuitry 1306 may also include synthesizer circuitry 1306D for synthesizing a frequency for use by the mixer circuitry 1306A of the receive signal path and the transmit signal path.
  • the mixer circuitry 1306 A of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 1308 based on the synthesized frequency provided by synthesizer circuitry 1306D.
  • the amplifier circuitry 1306B may be configured to amplify the down-converted signals and the filter circuitry 1306C 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 1304 for further processing.
  • the output baseband signals may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 1306A of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 1306A of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 1306D to generate RF output signals for the FEM circuitry 1308.
  • the baseband signals may be provided by the baseband circuitry 1304 and may be filtered by filter circuitry 1306C.
  • the mixer circuitry 1306A of the receive signal path and the mixer circuitry 1306A of the transmit signal path may include two or more mixers and may be arranged for quadrature downconversion and upconversion, respectively.
  • the mixer circuitry 1306A of the receive signal path and the mixer circuitry 1306A 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 1306A of the receive signal path and the mixer circuitry 1306A may be arranged for direct downconversion and direct upconversion, respectively.
  • the mixer circuitry 1306 A of the receive signal path and the mixer circuitry 1306A 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 1306 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 1304 may include a digital baseband interface to communicate with the RF circuitry 1306.
  • 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 1306D 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 1306D may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 1306D may be configured to synthesize an output frequency for use by the mixer circuitry 1306A of the RF circuitry 1306 based on a frequency input and a divider control input. In some embodiments, the synthesizer circuitry 1306D 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 1304 or the applications processor 1302 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 1302.
  • Synthesizer circuitry 1306D of the RF circuitry 1306 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 1306D 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 1306 may include an IQ/polar converter.
  • FEM circuitry 1308 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 1310, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 1306 for further processing.
  • FEM circuitry 1308 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 1306 for transmission by one or more of the one or more antennas 1310.
  • the amplification through the transmit or receive signal paths may be done solely in the RF circuitry 1306, solely in the FEM 1308, or in both the RF circuitry 1306 and the FEM 1308.
  • the FEM circuitry 1308 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 1306).
  • the transmit signal path of the FEM circuitry 1308 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 1306), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 1310).
  • PA power amplifier
  • the PMC 1312 may manage power provided to the baseband circuitry 1304.
  • the PMC 1312 may control power-source selection, voltage scaling, battery charging, or DC-to-DC conversion.
  • the PMC 1312 may often be included when the device 1300 is capable of being powered by a battery, for example, when the device is included in a UE.
  • the PMC 1312 may increase the power conversion efficiency while providing desirable implementation size and heat dissipation characteristics.
  • Fig. 13 shows the PMC 1312 coupled only with the baseband circuitry 1304.
  • the PMC 1312 may be additionally or alternatively coupled with, and perform similar power management operations for, other components such as, but not limited to, application circuitry 1302, RF circuitry 1306, or FEM 1308.
  • the PMC 1312 may control, or otherwise be part of, various power saving mechanisms of the device 1300. For example, if the device 1300 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 1300 may power down for brief intervals of time and thus save power.
  • DRX Discontinuous Reception Mode
  • the device 1300 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, and so on.
  • the device 1300 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 1300 may not receive data in this state, in order to receive data, it must transition back to
  • 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 1302 and processors of the baseband circuitry 1304 may be used to execute elements of one or more instances of a protocol stack.
  • processors of the baseband circuitry 1304, alone or in combination may be used execute Layer 3, Layer 2, or Layer 1 functionality, while processors of the application circuitry 1304 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. 14 illustrates example interfaces of baseband circuitry, in accordance with some embodiments of the disclosure.
  • the baseband circuitry 1304 of Fig. 13 may comprise processors 1304A-1304E and a memory 1304G utilized by said processors.
  • Each of the processors 1304A-1304E may include a memory interface, 1404A- 1404E, respectively, to send/receive data to/from the memory 1304G.
  • the baseband circuitry 1304 may further include one or more interfaces to communicatively couple to other circuitries/devices, such as a memory interface 1412 (e.g., an interface to send/receive data to/from memory extemal to the baseband circuitry 1304), an application circuitry interface 1414 (e.g., an interface to send/receive data to/from the application circuitry 1302 of Fig. 13), an RF circuitry interface 1416 (e.g., an interface to send/receive data to/from RF circuitry 1306 of Fig.
  • a memory interface 1412 e.g., an interface to send/receive data to/from memory extemal to the baseband circuitry 1304
  • an application circuitry interface 1414 e.g., an interface to send/receive data to/from the application circuitry 1302 of Fig. 13
  • an RF circuitry interface 1416 e.g., an interface to send/receive data to/from RF circuitry 1306 of
  • a wireless hardware connectivity interface 1418 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 1420 e.g., an interface to send/receive power or control signals to/from the PMC 1312.
  • DRAM Dynamic RAM
  • Example 1 provides an apparatus of a User Equipment (UE) operable to communicate with a New Radio Evolved Node B (gNB) on a wireless network, comprising: one or more processors to: determine a UE Transmit (Tx) beam for a transmission carrying a Physical Random Access Channel (PRACH) preamble; generate, for the UE Tx beam and for one or more physical resources, a first part of the transmission carrying a PRACH preamble portion; and generate, for the UE Tx beam and for the one or more physical resources, a second part of the transmission carrying a data portion, wherein the physical resources are associated with one of: an identified gNB Tx beam, or a Synchronization Signal Block (SSB) Antenna Port (AP), and an interface for sending the transmission to a transceiver circuitry.
  • UE User Equipment
  • gNB New Radio Evolved Node B
  • the apparatus of example 1 wherein the one or more physical resources include at least one of: one or more time resources, or one or more frequency resources.
  • example 3 the apparatus of either of examples 1 or 2, wherein the first part of the transmission and the second part of the transmission are multiplexed in at least one of: a Time-Division Multiplexing (TDM) manner, or a Frequency -Division Multiplexing (FDM) manner.
  • TDM Time-Division Multiplexing
  • FDM Frequency -Division Multiplexing
  • example 4 the apparatus of example 3, wherein the first part of the transmission and the second part of the transmission are multiplexed in a TDM manner within the same Radio Access Technology (RAT) slot.
  • RAT Radio Access Technology
  • example 5 the apparatus of examples 4, wherein the one or more physical resources are randomly selected.
  • example 6 the apparatus of any of examples 3 through 5, wherein the first part of the transmission is generated for a PRACH slot within a first Radio Access
  • RAT Radio Access
  • AP Antenna Port
  • example 7 the apparatus of example 6, wherein the one or more physical resources of the second part of the transmission are determined based on at least one of: a frequency resource index for the first part of the transmission, or a PRACH preamble signature index.
  • example 8 the apparatus of either of examples 6 or 7, wherein the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • DMRS Demodulation Reference Signal
  • example 9 the apparatus of any of examples 3 through 8, wherein the first part of the transmission and the second part of the transmission are multiplexed in an FDM manner within the same Radio Access Technology (RAT) slot; wherein the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • RAT Radio Access Technology
  • Example 10 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 9.
  • UE User Equipment
  • Example 11 provides a method comprising: determining, for a User
  • gNB New Radio Evolved Node-B
  • SSB Synchronization Signal Block
  • the method of example 11, wherein the one or more physical resources include at least one of: one or more time resources, or one or more frequency resources.
  • example 13 the method of either of examples 11 or 12, wherein the first part of the transmission and the second part of the transmission are multiplexed in at least one of: a Time-Division Multiplexing (TDM) manner, or a Frequency-Division Multiplexing (FDM) manner.
  • TDM Time-Division Multiplexing
  • FDM Frequency-Division Multiplexing
  • example 14 the method of example 13, wherein the first part of the transmission and the second part of the transmission are multiplexed in a TDM manner within the same Radio Access Technology (RAT) slot.
  • RAT Radio Access Technology
  • example 16 the method of any of examples 13 through 15, wherein the first part of the transmission is generated for a PRACH slot within a first Radio Access
  • RAT Radio Access
  • AP Antenna Port
  • example 17 the method of example 16, wherein the one or more physical resources of the second part of the transmission are determined based on at least one of: a frequency resource index for the first part of transmission, or a PRACH preamble signature index.
  • example 18 the method of either of examples 16 or 17, wherein the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • DMRS Demodulation Reference Signal
  • example 19 the method of any of examples 13 through 18, wherein the first part of the transmission and the second part of the transmission are multiplexed in an FDM manner within the same Radio Access Technology (RAT) slot; wherein the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • RAT Radio Access Technology
  • Example 20 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 11 through 19.
  • UE User Equipment
  • Example 21 provides an apparatus of a User Equipment (UE) operable to communicate with a New Radio Evolved Node B (gNB) on a wireless network, comprising: means for determining a UE Transmit (Tx) beam for a transmission carrying a Physical Random Access Channel (PRACH) preamble; means for generating, for the UE Tx beam and for one or more physical resources, a first part of the transmission carrying a PRACH preamble portion; and means for generating, for the UE Tx beam and for the one or more physical resources, a second part of the transmission carrying a data portion, wherein the physical resources are associated with one of: an identified a gNB Tx beam, or a
  • Tx UE Transmit
  • PRACH Physical Random Access Channel
  • Synchronization Signal Block (SSB) Antenna Port (AP), and
  • the apparatus of example 21, wherein the one or more physical resources include at least one of: one or more time resources, or one or more frequency resources.
  • example 23 the apparatus of either of examples 21 or 22, wherein the first part of the transmission and the second part of the transmission are multiplexed in at least one of: a Time-Division Multiplexing (TDM) manner, or a Frequency-Division Multiplexing (FDM) manner.
  • TDM Time-Division Multiplexing
  • FDM Frequency-Division Multiplexing
  • example 24 the apparatus of example 23, wherein the first part of the transmission and the second part of the transmission are multiplexed in a TDM manner within the same Radio Access Technology (RAT) slot.
  • RAT Radio Access Technology
  • example 25 the apparatus of example 24, wherein the one or more physical resources is randomly selected.
  • example 26 the apparatus of any of examples 23 through 25, wherein the first part of the transmission is generated for a PRACH slot within a first Radio Access Technology (RAT) slot; wherein the second part of the transmission is generated for the same PRACH slot within a second RAT slot; and wherein the PRACH slot is associated with one of: an identified gNB Tx beam, or a Synchronization Signal Block (SSB) Antenna Port (AP).
  • RAT Radio Access Technology
  • AP Antenna Port
  • example 27 the apparatus of example 26, wherein the one or more physical resources of the second part of the transmission are determined based on at least one of: a frequency resource index for the first part of transmission, or a PRACH preamble signature index.
  • example 28 the apparatus of either of examples 26 or 27, wherein the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • DMRS Demodulation Reference Signal
  • Example 29 the apparatus of any of examples 23 through 28, wherein the first part of the transmission and the second part of the transmission are multiplexed in an FDM manner within the same Radio Access Technology (RAT) slot; wherein the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • RAT Radio Access Technology
  • Example 30 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 a New Radio Evolved Node-B (gNB) on a wireless network to perform an operation comprising: determine a UE Transmit (Tx) beam for a transmission carrying a Physical Random Access Channel (PRACH) preamble;
  • Tx UE Transmit
  • PRACH Physical Random Access Channel
  • the machine readable storage media of example 30, wherein the one or more physical resources include at least one of: one or more time resources, or one or more frequency resources.
  • first part of the transmission and the second part of the transmission are multiplexed in at least one of: a Time-Division Multiplexing (TDM) manner, or a Frequency- Division Multiplexing (FDM) manner.
  • TDM Time-Division Multiplexing
  • FDM Frequency- Division Multiplexing
  • example 33 the machine readable storage media of example 32, wherein the first part of the transmission and the second part of the transmission are multiplexed in a TDM manner within the same Radio Access Technology (RAT) slot.
  • RAT Radio Access Technology
  • example 34 the machine readable storage media of example 33, wherein the one or more physical resources is randomly selected.
  • the machine readable storage media of any of examples 32 through 34 wherein the first part of the transmission is generated for a PRACH slot within a first Radio Access Technology (RAT) slot; wherein the second part of the transmission is generated for the same PRACH slot within a second RAT slot; and wherein the PRACH slot is associated with one of: an identified gNB Tx beam, or a Synchronization Signal Block (SSB) Antenna Port (AP).
  • RAT Radio Access Technology
  • AP Antenna Port
  • example 36 the machine readable storage media of example 35, wherein the one or more physical resources of the second part of the transmission are determined based on at least one of: a frequency resource index for the first part of transmission, or a PRACH preamble signature index.
  • the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • DMRS Demodulation Reference Signal
  • the machine readable storage media of any of examples 32 through 37 wherein the first part of the transmission and the second part of the transmission are multiplexed in an FDM manner within the same Radio Access Technology (RAT) slot; wherein the second part of the transmission comprises a Demodulation Reference Signal (DMRS); and wherein a DMRS sequence associated with the DMRS are based on a PRACH preamble signature index.
  • RAT Radio Access Technology
  • Example 39 provides an apparatus of a User Equipment (UE) operable to communicate with a New Radio Evolved Node B (gNB) on a wireless network, comprising: one or more processors to: determine a UE Transmit (Tx) beam for a transmission carrying a Physical Random Access Channel (PRACH) preamble; and generate, for the UE Tx beam and for one or more physical resources, a transmission having a first part carrying a PRACH preamble portion and a second part carrying a data portion, wherein the one or more physical resources include at least one of: one or more time resources, or one or more frequency resources; and an interface for sending the transmission to a transceiver circuitry.
  • UE User Equipment
  • gNB New Radio Evolved Node B
  • example 40 the apparatus of example 39, wherein the physical resources are associated with one of: an identified gNB Tx beam, or a Synchronization Signal Block (SSB) Antenna Port (AP), and
  • SSB Synchronization Signal Block
  • AP Antenna Port
  • example 41 the apparatus of either of examples 39 or 40, wherein the transmission carries at least one of: a UE identifier, a Buffer Status Report (BSR), or a Message 3.
  • BSR Buffer Status Report
  • example 42 the apparatus of any of examples 39 through 41, wherein the one or more processors are to: generate a scrambling sequence for the second part of the transmission based upon a PRACH preamble signature index; and define a scrambling seed based on at least one of: a physical cell identity (ID), a virtual cell ID, a frame index, a Radio Access Technology (RAT) slot index, a PRACH slot index, a symbol index, a Physical Resource Block (PRB) index, a sub-band index, a frequency resource index, or a PRACH preamble signature index.
  • ID physical cell identity
  • RAT Radio Access Technology
  • PRACH slot index a Physical Resource Block
  • PRB Physical Resource Block
  • example 43 the apparatus of any of examples 39 through 42, wherein the one or more processors are to: mask a Cyclic Redundancy Check (CRC) for the second part of the transmission based upon at least one of: a PRACH preamble signature index, or a frequency resource index.
  • CRC Cyclic Redundancy Check
  • example 44 the apparatus of any of examples 39 through 43, wherein a transmit power used for the first part of the transmission is substantially the same as a transmit power used for the second part of the transmission.
  • example 45 the apparatus of any of examples 39 through 44, wherein the one or more processors are to: monitor for receipt of a Random Access Response (RAR) during an RAR window; initiate a random backoff procedure comprising generation of one or more additional transmissions carrying a PRACH preamble signature index if no RAR is received during the RAR window; monitor for receipt of an RAR during the random backoff procedure; and initiate a four-step RACH procedure if no RAR is received during the random backoff procedure.
  • RAR Random Access Response
  • example 46 the apparatus of any of examples 39 through 45, wherein the one or more physical resources are configured by one of: a New Radio (NR) Minimum System Information (MSI), an NR Remaining Minimum System Information (RMSI), an NR Other System Information (OSI), or Radio Resource Control (RRC) signaling.
  • NR New Radio
  • MSI New Radio
  • RMSI NR Remaining Minimum System Information
  • OSI NR
  • RRC Radio Resource Control
  • example 47 the apparatus of any of examples 39 through 46, wherein at least one of a PRACH preamble signature sequence, a set of time resources, or a set of frequency resources is reserved for the transmission.
  • Example 48 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 39 through 47.
  • UE User Equipment
  • Example 49 provides a method comprising: determining, for a User
  • UE Equipment
  • Tx UE Transmit
  • PRACH Physical Random Access Channel
  • example 50 the method of example 49, wherein the physical resources are associated with one of: an identified New Radio Evolved Node B (gNB) Tx beam, or a Synchronization Signal Block (SSB) Antenna Port (AP), and
  • gNB New Radio Evolved Node B
  • SSB Synchronization Signal Block
  • AP Antenna Port
  • example 51 the method of either of examples 49 or 50, wherein the transmission carries at least one of: a UE identifier, a Buffer Status Report (BSR), or a Message 3.
  • BSR Buffer Status Report
  • example 52 the method of any of examples 49 through 51, comprising: generating a scrambling sequence for the second part of the transmission based upon a PRACH preamble signature index; and defining a scrambling seed based on at least one of: a physical cell identity (ID), a virtual cell ID, a frame index, a Radio Access Technology (RAT) slot index, a PRACH slot index, a symbol index, a Physical Resource Block (PRB) index, a sub-band index, a frequency resource index, or a PRACH preamble signature index.
  • ID physical cell identity
  • RAT Radio Access Technology
  • PRACH Physical Resource Block
  • example 53 the method of any of examples 49 through 52, comprising: masking a Cyclic Redundancy Check (CRC) for the second part of the transmission based upon at least one of: a PRACH preamble signature index, or a frequency resource index.
  • CRC Cyclic Redundancy Check
  • example 54 the method of any of examples 49 through 53, wherein a transmit power used for the first part of the transmission is the same as a transmit power used for the second part of the transmission.
  • example 55 the method of any of examples 49 through 54, comprising: monitoring for receipt of a Random Access Response (RAR) during an RAR window;
  • RAR Random Access Response
  • a random backoff procedure comprising generation of one or more additional transmissions carrying a PRACH preamble signature index if no RAR is received during the RAR window; monitoring for receipt of an RAR during the random backoff procedure; and initiating a four-step RACH procedure if no RAR is received during the random backoff procedure.
  • example 56 the method of any of examples 49 through 55, wherein the one or more physical resources are configured by one of: a New Radio (NR) Minimum System Information (MSI), an NR Remaining Minimum System Information (RMSI), an NR Other System Information (OSI), or Radio Resource Control (RRC) signaling.
  • NR New Radio
  • MSI New Radio
  • RMSI NR Remaining Minimum System Information
  • OSI NR
  • RRC Radio Resource Control
  • example 57 the method of any of examples 49 through 56, wherein at least one of a PRACH preamble signature sequence, a set of time resources, or a set of frequency resources is reserved for the transmission.
  • Example 58 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 49 through 57.
  • UE User Equipment
  • Example 59 provides an apparatus of a User Equipment (UE) operable to communicate with a New Radio Evolved Node B (gNB) on a wireless network, comprising: means for determining a UE Transmit (Tx) beam for a transmission carrying a Physical Random Access Channel (PRACH) preamble; and means for generating, for the UE Tx beam and for one or more physical resources, a transmission having a first part carrying a PRACH preamble portion and a second part carrying a data portion, wherein the one or more physical resources include at least one of: one or more time resources, or one or more frequency resources.
  • UE User Equipment
  • gNB New Radio Evolved Node B
  • example 60 the apparatus of example 59, wherein the physical resources are associated with one of: an identified gNB Tx beam, or a Synchronization Signal Block (SSB) Antenna Port (AP), and
  • SSB Synchronization Signal Block
  • AP Antenna Port
  • example 61 the apparatus of either of examples 59 or 60, wherein the transmission carries at least one of: a UE identifier, a Buffer Status Report (BSR), or a Message 3.
  • BSR Buffer Status Report
  • example 62 the apparatus of any of examples 59 through 61, comprising: means for generating a scrambling sequence for the second part of the transmission based upon a PRACH preamble signature index; and means for defining a scrambling seed based on at least one of: a physical cell identity (ID), a virtual cell ID, a frame index, a Radio Access Technology (RAT) slot index, a PRACH slot index, a symbol index, a Physical Resource Block (PRB) index, a sub-band index, a frequency resource index, or a PRACH preamble signature index.
  • ID physical cell identity
  • RAT Radio Access Technology
  • PRACH slot index a Physical Resource Block
  • PRB Physical Resource Block
  • example 63 the apparatus of any of examples 59 through 62, comprising: means for masking a Cyclic Redundancy Check (CRC) for the second part of the transmission based upon at least one of: a PRACH preamble signature index, or a frequency resource index.
  • CRC Cyclic Redundancy Check
  • example 64 the apparatus of any of examples 59 through 63, wherein a transmit power used for the first part of the transmission is the same as a transmit power used for the second part of the transmission.
  • example 65 the apparatus of any of examples 59 through 64, comprising: means for monitoring for receipt of a Random Access Response (RAR) during an RAR window; means for initiating a random backoff procedure comprising generation of one or more additional transmissions carrying a PRACH preamble signature index if no RAR is received during the RAR window; means for monitoring for receipt of an RAR during the random backoff procedure; and means for initiating a four-step RACH procedure if no RAR is received during the random backoff procedure.
  • RAR Random Access Response
  • example 66 the apparatus of any of examples 59 through 65, wherein the one or more physical resources are configured by one of: a New Radio (NR) Minimum System Information (MSI), an NR Remaining Minimum System Information (RMSI), an NR Other System Information (OSI), or Radio Resource Control (RRC) signaling.
  • NR New Radio
  • MSI New Radio
  • RMSI NR Remaining Minimum System Information
  • OSI NR
  • RRC Radio Resource Control
  • example 67 the apparatus of any of examples 59 through 66, wherein at least one of a PRACH preamble signature sequence, a set of time resources, or a set of frequency resources is reserved for the transmission.
  • Example 68 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 a New Radio Evolved Node-B (gNB) on a wireless network to perform an operation comprising: determine a UE Transmit (Tx) beam for a transmission carrying a Physical Random Access Channel (PRACH) preamble; and generate, for the UE Tx beam and for one or more physical resources, a transmission having a first part carrying a PRACH preamble portion and a second part carrying a data portion, wherein the one or more physical resources include at least one of: one or more time resources, or one or more frequency resources.
  • Tx UE Transmit
  • PRACH Physical Random Access Channel
  • example 69 the machine readable storage media of example 68, wherein the physical resources are associated with one of: an identified gNB Tx beam, or a
  • Synchronization Signal Block (SSB) Antenna Port (AP), and
  • example 70 the machine readable storage media of either of examples 68 or
  • the transmission carries at least one of: a UE identifier, a Buffer Status Report (BSR), or a Message 3.
  • BSR Buffer Status Report
  • the machine readable storage media of any of examples 68 through 70 the operation comprising: generate a scrambling sequence for the second part of the transmission based upon a PRACH preamble signature index; and define a scrambling seed based on at least one of: a physical cell identity (ID), a virtual cell ID, a frame index, a Radio Access Technology (RAT) slot index, a PRACH slot index, a symbol index, a Physical Resource Block (PRB) index, a sub-band index, a frequency resource index, or a PRACH preamble signature index.
  • ID physical cell identity
  • RAT Radio Access Technology
  • PRACH slot index a Physical Resource Block
  • PRB Physical Resource Block
  • example 72 the machine readable storage media of any of examples 68 through 71, the operation comprising: mask a Cyclic Redundancy Check (CRC) for the second part of the transmission based upon at least one of: a PRACH preamble signature index, or a frequency resource index.
  • CRC Cyclic Redundancy Check
  • the machine readable storage media of any of examples 68 through 72 wherein a transmit power used for the first part of the transmission is the same as a transmit power used for the second part of the transmission.
  • the machine readable storage media of any of examples 68 through 73 the operation comprising: monitor for receipt of a Random Access Response (RAR) during an RAR window; initiate a random backoff procedure comprising generation of one or more additional transmissions carrying a PRACH preamble signature index if no RAR is received during the RAR window; monitor for receipt of an RAR during the random backoff procedure; and initiate a four-step RACH procedure if no RAR is received during the random backoff procedure.
  • RAR Random Access Response
  • NR New Radio
  • MSI New Radio
  • RMSI NR Remaining Minimum System Information
  • OSI NR
  • RRC Radio Resource Control
  • example 76 the machine readable storage media of any of examples 68 through 75, wherein at least one of a PRACH preamble signature sequence, a set of time resources, or a set of frequency resources is reserved for the transmission.
  • the one or more processors comprise a baseband processor.
  • example 78 the apparatus of any of examples 1 through 9 and 39 through
  • transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing transmissions, or decoding transmissions.
  • example 80 the apparatus of any of examples 1 through 9 and 39 through

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne un appareil d'un équipement d'utilisateur (UE). L'appareil peut comprendre un premier circuit et un second circuit. Le premier circuit peut permettre de déterminer un faisceau de transmission (Tx) d'UE pour une transmission comportant un indice de signature de préambule de canal physique d'accès aléatoire (PRACH). Le second circuit peut permettre de générer, pour le faisceau Tx d'UE et pour une ou plusieurs ressources physiques, une transmission présentant une première partie comportant une partie préambule de PRACH et une seconde partie comportant une partie données. Lesdites ressources physiques peuvent renfermer une ou plusieurs ressources temporelles et/ou une ou plusieurs ressources de fréquence.
PCT/US2017/050838 2016-09-09 2017-09-08 Procédures de canal d'accès aléatoire à faible latence destinées à des systèmes à formation de faisceau WO2018049274A1 (fr)

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CN110474744B (zh) * 2018-05-11 2021-02-26 维沃移动通信有限公司 一种传输资源指示方法、网络设备及终端
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WO2020087455A1 (fr) * 2018-11-01 2020-05-07 北京小米移动软件有限公司 Procédé et dispositif de transmission d'informations d'indication de synchronisation
CN111328088A (zh) * 2018-12-17 2020-06-23 华为技术有限公司 一种prach检测方法及装置
CN111328088B (zh) * 2018-12-17 2021-12-03 华为技术有限公司 一种prach检测方法及装置
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JP7216832B2 (ja) 2019-01-18 2023-02-01 維沃移動通信有限公司 ランダムアクセス伝送方法及び端末
JP2022518467A (ja) * 2019-01-18 2022-03-15 維沃移動通信有限公司 ランダムアクセス伝送方法及び端末
WO2020165498A1 (fr) * 2019-02-15 2020-08-20 Nokia Technologies Oy Structure de message d'un équipement d'utilisateur à une station de base dans un accès aléatoire en deux étapes
TWI824109B (zh) * 2019-02-15 2023-12-01 芬蘭商諾基亞科技公司 兩步驟隨機接取中從使用者設備到基地台之訊息結構
JP7411668B2 (ja) 2019-02-15 2024-01-11 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおいて信号を送受信する方法及びそれを支援する装置
WO2020167051A1 (fr) * 2019-02-15 2020-08-20 엘지전자 주식회사 Procédé d'émission/de réception de signaux dans un système de communication sans fil et dispositif le prenant en charge
WO2020197481A1 (fr) * 2019-03-26 2020-10-01 Telefonaktiebolaget Lm Ericsson (Publ) Nœud de réseau et procédé mis en œuvre en son sein à des fins de communication avec un dispositif sans fil
JP2022526945A (ja) * 2019-03-27 2022-05-27 アップル インコーポレイテッド 無認可動作を伴う新無線（ｎｒ）のための２ステップｒａｃｈ
JP7297921B2 (ja) 2019-03-27 2023-06-26 アップル インコーポレイテッド 無認可動作を伴う新無線（ｎｒ）のための２ステップｒａｃｈ
CN114145071A (zh) * 2019-05-03 2022-03-04 Lg电子株式会社 在无线通信系统中终端发送和接收用于执行随机接入信道过程的信号的方法及其装置
CN114145071B (zh) * 2019-05-03 2024-03-08 Lg电子株式会社 在无线通信系统中终端发送和接收用于执行随机接入信道过程的信号的方法及其装置
US12004235B2 (en) 2019-05-03 2024-06-04 Lg Electronics Inc. Method whereby terminal transmits and receives signals for carrying out random access channel procedure in wireless communication system, and device therefor
WO2021018073A1 (fr) * 2019-07-31 2021-02-04 华为技术有限公司 Procédé de transmission de données, appareil de communication et système de communication
US11968575B2 (en) 2019-07-31 2024-04-23 Huawei Technologies Co., Ltd. Data transmission method, communication apparatus, and communication system

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