WO2023105797A1 - Terminal, station de base et procédé de communication sans fil - Google Patents

Terminal, station de base et procédé de communication sans fil Download PDF

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Publication number
WO2023105797A1
WO2023105797A1 PCT/JP2021/045691 JP2021045691W WO2023105797A1 WO 2023105797 A1 WO2023105797 A1 WO 2023105797A1 JP 2021045691 W JP2021045691 W JP 2021045691W WO 2023105797 A1 WO2023105797 A1 WO 2023105797A1
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Prior art keywords
transmission
pusch
information
terminal
unit
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PCT/JP2021/045691
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English (en)
Japanese (ja)
Inventor
春陽 越後
大輔 栗田
浩樹 原田
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2021/045691 priority Critical patent/WO2023105797A1/fr
Publication of WO2023105797A1 publication Critical patent/WO2023105797A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Definitions

  • the present disclosure relates to terminals, base stations, and wireless communication methods.
  • the 3rd Generation Partnership Project (3GPP) specifies the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and beyond 5G, 5G Evol next-generation specifications called ution or 6G We are also proceeding with 5G generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and beyond 5G, 5G Evol next-generation specifications called ution or 6G We are also proceeding with 5G, 5G Evol next-generation specifications called ution or 6G
  • Non-Patent Document 1 a work item related to coverage enhancement (CE: Coverage Enhancement) in NR is agreed (Non-Patent Document 1).
  • RAR is an abbreviation for Random Access Response.
  • DCI is an abbreviation for Downlink Control Information.
  • CRC is an abbreviation for Cyclic Redundancy Check.
  • TC-RNTI is an abbreviation for Temporary Cell-Radio Network Temporary Identifier.
  • PUSCH is an abbreviation for Physical Uplink Shared Channel.
  • a controller for controlling repeated transmission of an uplink data channel scheduled in a random access procedure; a transmitter for transmitting an uplink control channel on a transmission beam used for said repeated transmission; is provided.
  • FIG. 1 is a schematic diagram illustrating a wireless communication system according to one embodiment of the disclosure
  • FIG. 1 is a diagram illustrating an example of frequency ranges used in a wireless communication system according to one embodiment of the present disclosure
  • FIG. FIG. 2 is a diagram showing a configuration example of radio frames, subframes and slots used in a radio communication system according to an embodiment of the present disclosure
  • FIG. 4 is a sequence diagram illustrating a Contention Based Random Access procedure according to an embodiment of the present disclosure
  • FIG. 4 is a sequence diagram showing a Contention Free Random Access procedure according to an embodiment of the present disclosure
  • FIG. 4 is a block diagram showing a functional configuration of a base station (gNB) according to one embodiment of the present disclosure
  • gNB base station
  • 1 is a block diagram showing a functional configuration of a terminal (UE) according to an embodiment of the present disclosure
  • FIG. FIG. 2 is a block diagram showing hardware configurations of a base station and a terminal according to an embodiment of the present disclosure
  • FIG. 1 is a block diagram showing a hardware configuration of a vehicle according to one embodiment of the present disclosure
  • FIG. 1 is a diagram showing an example of a radio communication system 10 according to one embodiment.
  • the radio communication system 10 is a radio communication system according to 5G New Radio (NR), and includes a Next Generation-Radio Access Network 20 (hereinafter NG-RAN 20) and a terminal 200 (hereinafter UE 200).
  • NR 5G New Radio
  • NG-RAN 20 Next Generation-Radio Access Network
  • UE 200 terminal 200
  • the wireless communication system 10 may be a wireless communication system that conforms to a system called Beyond 5G, 5G Evolution, or 6G.
  • the NG-RAN 20 includes a base station 100A (hereinafter gNB100A) and a base station 100B (hereinafter gNB100B). Note that when there is no need to distinguish between the gNB 100A, the gNB 100B, and the like, they are collectively referred to as the gNB 100. Also, the number of gNBs and UEs is not limited to the example shown in FIG.
  • the NG-RAN 20 actually includes multiple NG-RAN nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (5GC, not shown). Note that the NG-RAN 20 and 5GC may simply be expressed as a "network”.
  • the gNB 100A and gNB 100B are base stations conforming to 5G, and perform radio communication conforming to 5G with the UE 200.
  • gNB 100A, gNB 100B, and UE 200 generate beams BM with higher directivity by controlling radio signals transmitted from multiple antenna elements Multiple-Input Multiple-Output (MIMO), multiple component carriers (CC) It may support carrier aggregation (CA) that bundles and uses dual connectivity (DC) that communicates between the UE and each of the two NG-RAN nodes.
  • MIMO Multiple-Input Multiple-Output
  • CC component carriers
  • CA carrier aggregation
  • DC dual connectivity
  • the wireless communication system 10 supports multiple frequency ranges (FR).
  • FIG. 2 is a diagram showing an example of frequency ranges used in the wireless communication system 10.
  • the wireless communication system 10 supports FR1 and FR2.
  • the frequency band of each FR is as follows. ⁇ FR1: 410MHz to 7.125GHz ⁇ FR2: 24.25GHz to 52.6GHz
  • FR1 a Sub-Carrier Spacing (SCS) of 15 kHz, 30 kHz or 60 kHz may be used and a bandwidth (BW) of 5-100 MHz may be used.
  • FR2 is higher frequency than FR1 and may use an SCS of 60 kHz or 120 kHz (240 kHz may be included) and a bandwidth (BW) of 50-400 MHz.
  • Sub-Carrier Spacing may be interpreted as neumerology. Numerology is defined in 3GPP TS38.300 and corresponds to one subcarrier spacing in the frequency domain.
  • the wireless communication system 10 may support a higher frequency band than the FR2 frequency band. Specifically, the wireless communication system 10 may support frequency bands above 52.6 GHz and up to 114.25 GHz. Such a high frequency band may be conveniently referred to as "FR2x". Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM)/Discrete Fourier Transform-Spread-Orthogonal Frequency Division Mu with larger SCS when using bands above 52.6 GHz Even if ltiplexing (DFT-S-OFDM) is applied good.
  • CP-OFDM Cyclic Prefix-Orthogonal Frequency Division Multiplexing
  • DFT-S-OFDM Discrete Fourier Transform-Spread-Orthogonal Frequency Division Mu with larger SCS when using bands above 52.6 GHz Even if ltiplexing
  • FIG. 3 is a diagram showing a configuration example of radio frames, subframes, and slots used in the radio communication system 10.
  • FIG. 3 As shown in FIG. 3, one slot consists of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and the slot period).
  • the SCS is not limited to the intervals (frequencies) shown in FIG. For example, 480 kHz, 960 kHz, etc. may be used as SCS.
  • the number of symbols forming one slot does not necessarily have to be 14 symbols (for example, 28 or 56 symbols). Furthermore, the number of slots per subframe may vary for different SCSs.
  • time direction (t) shown in FIG. 3 may also be referred to as the time domain, symbol period, symbol time, or the like.
  • frequency direction may be called a frequency domain, a resource block, a subcarrier, a bandwidth part (BWP: Bandwidth Part), or the like.
  • a demodulation reference signal is a kind of reference signal and is prepared for various channels.
  • DMRS may mean DMRS for downlink data channels (specifically, Physical Downlink Shared Channel (PDSCH)).
  • PDSCH Physical Downlink Shared Channel
  • DMRS for uplink data channels specifically, PUSCH
  • PUSCH uplink data channels
  • DMRS may be used for channel estimation in a device (eg, UE 200) as part of coherent demodulation.
  • DMRS may exist only in resource blocks (RBs) used for PDSCH transmission.
  • a DMRS may have multiple mapping types. Specifically, the DMRS may have mapping type A and mapping type B. For mapping type A, the first DMRS may be placed in the 2nd or 3rd symbol of the slot. For mapping type A, the DMRS may be mapped relative to slot boundaries, regardless of where in the slot the actual data transmission begins. The reason why the first DMRS is placed in the 2nd or 3rd symbol of the slot may be interpreted as to place the first DMRS after the control resource sets (CORESET).
  • CORESET control resource sets
  • the first DMRS may be placed in the first symbol of data allocation. That is, the position of the DMRS may be given relative to where the data is located rather than relative to slot boundaries.
  • the DMRS may have multiple types. Specifically, DMRS may have Type 1 and Type 2. Type 1 and Type 2 differ in mapping in the frequency domain and the maximum number of orthogonal reference signals. Type 1 can output up to 4 orthogonal signals in single-symbol DMRS, and Type 2 can output up to 8 orthogonal signals in double-symbol DMRS.
  • the radio communication system 10 may support coverage enhancement (CE: Coverage Enhancement) that expands the coverage of cells (or physical channels) formed by the gNB 100 .
  • coverage enhancement mechanisms may be provided to increase the reception success rate of various physical channels such as Msg3 repetition.
  • the UE 200 receives information related to random access (RACH) procedures from the gNB 100 as downlink (DL) signals. Also, for example, the UE 200 receives information about Msg3 repetition from the gNB 100 as a DL signal. Information about Msg3 repetition may include, for example, information indicating resources used for repeated transmission of Msg3, number of repeated transmissions, frequency hopping pattern, specified offset used in frequency hopping, and the like.
  • the UE 200 transmits a special RACH occurrence (RO) for requesting Msg3 repetition in the RACH procedure, a preamble, etc. to the gNB 100 as an uplink (UL) signal.
  • the UE 200 repeatedly transmits Msg3 to the gNB 100 as a UL signal based on the information regarding the Msg3 repetition received from the gNB 100 in response to the request for the Msg3 repetition.
  • RO RACH occurrence
  • a UL signal may include, for example, a UL data signal and control information.
  • the UL signal may include information about the processing capability of the UE 200 (eg, UE capability).
  • the UL signal may include a reference signal.
  • Channels used to transmit UL signals include, for example, data channels and control channels.
  • the data channel may include PUSCH
  • the control channel may include Physical Uplink Control Channel (PUCCH).
  • PUCCH Physical Uplink Control Channel
  • the UE 200 transmits control information using PUCCH, and transmits UL data signals using PUSCH.
  • PUSCH is an example of an uplink shared channel
  • PUCCH is an example of an uplink control channel.
  • a shared channel may also be referred to as a data channel.
  • Reference signals included in the UL signal include, for example, DMRS, Phase Tracking Reference Signal (PTRS), Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS) and Positioning Refer for position information ence Signal (PRS ) may be included.
  • DMRS Phase Tracking Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • SRS Sounding Reference Signal
  • PRS Positioning Refer for position information ence Signal
  • reference signals such as DMRS and PTRS are used for demodulation of UL data signals and transmitted using PUSCH.
  • the NR RACH procedure is performed for initial access from RRC_Idle, RRC connection (re)establishment, beam failure recovery, handover, downlink data arrival, uplink data arrival, positioning, Timing Alignment (TA), etc.
  • the RACH procedure includes a Contention Based Random Access (CBRA) procedure as a contention-based random access procedure and a Contention-Free Random Access (CFRA) procedure as a non-collision random access procedure. Since the CBRA procedure is voluntarily initiated by the UE 200, multiple UEs 200 simultaneously initiating the RACH procedure may cause collisions.
  • CFRA can cause the gNB 100 to instruct the connected UEs 200 to perform the RACH procedure so that collisions do not occur between the plurality of UEs 200 .
  • FIG. 4 is a sequence diagram illustrating a CBRA procedure according to one embodiment of the present disclosure.
  • UE 200 transmits a random access preamble (RA preamble) as a first message (Msg1) via a physical random access channel (PRACH) in step S101.
  • RA preamble random access preamble
  • Msg1 first message
  • PRACH physical random access channel
  • the UE 200 receives a response message (Random Access Response (RAR)) to Msg1 via PDSCH as a second message (Msg2).
  • RAR Random Access Response
  • Msg2 may monitor PDCCH used for scheduling of PDSCH containing Msg2 after transmitting Msg1.
  • the CRC bits included in the PDCCH may be scrambled by RA-RNTI (Random Access-Radio Network Temporary Identifier).
  • Msg2 may include an uplink grant (RAR uplink grant) used for scheduling PUSCH including Msg3.
  • the RAR uplink grant may include TC-RNTI (Temporary Cell-RNTI).
  • the RAR uplink grant may contain a TPC command indicating a correction value to the power control adjustment used for the transmit power of the PUSCH containing Msg3.
  • the UE 200 transmits the PUSCH scheduled by the RAR uplink grant as the third message (Msg3).
  • Msg3 may be called RRC Connection Request.
  • UE 200 may repeatedly transmit PUSCH of Msg3.
  • the UE 200 receives the collision resolution message as the fourth message (Msg4) via the PDCCH.
  • UE200 may monitor PDCCH used for scheduling of PDSCH containing Msg4 after transmitting Msg3.
  • Msg4 may include a Collision Resolution ID (UE Collision Resolution ID).
  • the collision resolution ID may be used to resolve collisions in which multiple UEs 200 transmit signals using the same radio resource. If the collision resolution ID included in Msg4 received by UE200 is the same value as the ID for identifying the UE200, UE200 determines that the collision resolution has succeeded, and sets the value of TC-RNTI to the C-RNTI field. May be set. When the C-RNTI field is set to the TC-RNTI value, the UE 200 may consider the RRC connection completed. Msg4 may be called RRC Connection Setup.
  • UE 200 having completed the RRC connection may transmit Ack via PUCCH (PUCCH resource) indicated by the PUCCH resource indication field included in the PDCCH that schedules Msg4, in order to notify gNB 100 that the RRC connection has been completed. good. Also, after establishing the RRC connection, UE200 transmits UE capability to gNB100.
  • the RACH procedure described above may also be called a Type 1 RACH procedure, a 4-step RACH procedure, a Type 1 RACH, a 4-step RACH, or the like.
  • FIG. 5 is a sequence diagram illustrating a CFRA procedure according to one embodiment of the present disclosure.
  • UE 200 is requested to transmit RA preamble (Msg1) from gNB 100 in step S201.
  • the gNB 100 may allocate the RA preamble (Msg1) via dedicated signaling.
  • a PDCCH for such dedicated signaling may be referred to as PDCCH order.
  • UE 200 monitors PDCCH (PDCCH order) for executing resource allocation for Msg1.
  • step S202 the UE 200 transmits Msg1 described above.
  • step S203 the UE 200 receives Msg2 described above.
  • the UE 200 that has completed the RRC connection may transmit an Ack via PUCCH (PUCCH resource) in order to notify the gNB 100 that the RRC connection has been completed.
  • PUCCH PUCCH resource
  • UE 200 transmits UE capability to gNB 100 and notifies whether repeated transmission of Msg3 is supported.
  • Repetition type A may be interpreted as a form in which the PUSCH allocated within the slot is repeatedly transmitted. In other words, the PUSCH is 14 symbols or less, and is unlikely to be allocated across multiple slots (adjacent slots).
  • Repetition type B may be interpreted as repeated transmission of PUSCH to which 15 or more PUSCH symbols may be allocated. In the present embodiment, allocation of such PUSCH across multiple slots may be allowed.
  • the UE 200 may include multiple types of terminals that differ in function or performance, or that support different 3GPP releases.
  • the terminal (UE) may be called a type 1 terminal and a type 2 terminal.
  • the type may be replaced by other terms such as generation and release.
  • a type 1 terminal and a type 2 terminal may be called an enhanced UE and a legacy UE, respectively.
  • an enhanced UE may be interpreted as a UE that supports Msg3 repetition
  • a legacy UE may be interpreted as a UE that does not support Msg3 repetition.
  • the spatial domain transmission filter used for the PUSCH transmission scheduled in the RAR uplink grant including the initial transmission of Msg3 may be determined depending on the UE implementation. Also, MsgA's PUSCH may be transmitted with the same space-domain transmit filter as MsgA's PRACH. Here, the spatial domain transmit filters may be referred to as transmit beams.
  • PUSCH scheduled by RAR UL grant is PUSCH scheduled by RAR UL grant in Msg3 initial transmission or CFRA. Msg3 may be rephrased as PUSCH scheduled by RAR UL grant.
  • the PUCCH is transmitted with the same spatial domain transmit filter (transmit beam) as the PUSCH scheduled by the RAR uplink grant (see 3GPP TS 38.213 V16.7.0). Also, it is stipulated that when a spatial setting for PUCCH transmission is set by PUCCH-SpatialRelationInfo or the like, the setting is applied. On the other hand, for the case where repeated transmission of PUSCH is applied, a spatial domain transmission filter for transmitting PUCCH has not been considered. For example, when the spatial domain transmission filter is changed in repeated transmission of PUSCH, no consideration has been given as to which PUSCH uses the same spatial domain transmission filter for PUCCH transmission.
  • the UE 200 may transmit the uplink control channel on the transmit beam used for repeated transmission of the scheduled uplink data channel in the random access procedure. Specifically, when repeatedly transmitting PUSCH (PUSCH scheduled by RAR UL grant) scheduled by the RAR uplink grant, that is, in the case of repeated transmission of PUSCH at the time of initial transmission, UE 200 is the same space in the repeated transmission A domain transmit filter may be used to transmit, and the PUCCH may be transmitted over the same spatial domain transmit filter that was utilized at that time.
  • UE 200 may transmit using the same spatial domain transmit filter in the repeated transmissions. Also, the PUCCH may be transmitted by the same spatial domain transmission filter as used at that time.
  • PUSCH scheduled by RAR uplink grant PUSCH scheduled by RAR UL grant
  • PUSCH scheduled by DCI with CRC scrambled by TC-RNTI PUSCH scheduled by DCI with CRC scrambled by TC-
  • the spatial domain transmit filter used for PUCCH transmission can be clearly determined.
  • the UE 200 selects the spatial domain transmit filter used for the associated PRACH transmission in the RACH procedure as PUSCH scheduled by RAR uplink grant, PUSCH scheduled by DCI by CRC scrambled by TC-RNTI , and PUCCH transmission.
  • the UE 200 when repeatedly transmitting a PUSCH (PUSCH scheduled by RAR UL grant) scheduled by a RAR uplink grant, the UE 200 can transmit using a different spatial domain transmission filter in the repeated transmission.
  • PUSCH scheduled by DCI with CRC scrambled by TC-RNTI PUSCH scheduled by DCI with CRC scrambled by TC-RNTI
  • UE 200 uses a different spatial domain transmit filter in the repeated transmission. can be sent using For example, when repeatedly transmitting PUSCH (PUSCH scheduled by RAR UL grant) scheduled by RAR uplink grant, or when applying interpretation of uplink grant for instructing repeated transmission of PUSCH, UE 200 is described later.
  • the PUCCH may be transmitted applying a spatial domain transmit filter such as
  • the interpretation of the uplink grant for instructing the repeated transmission of the PUSCH means that when the repeated transmission of the PUSCH is applied, the number of repetitions is set in some bits of the modulation coding scheme (MCS) field of the uplink grant. is indicated, which means that the UE 200 determines the number of repetitions from the part of the bits of the MCS field.
  • MCS modulation coding scheme
  • the UE 200 may transmit PUCCH using the spatial domain transmit filter used for a specific slot among slots in which PUSCH scheduled by the RAR uplink grant is repeatedly transmitted. Specifically, UE 200 may transmit PUCCH with the spatial domain transmit filter used in the first slot or the last slot of repeated transmission. Alternatively, UE 200 may transmit PUCCH with the spatial domain transmit filter used in the most slots between repeated transmissions.
  • UE 200 may use, for PUCCH transmission, the spatial domain transmit filter used for related PRACH transmission in the RACH procedure. Also, the UE 200 may use, for PUCCH transmission, the spatial domain transmission filter used when receiving the PDCCH for which the PDSCH is scheduled. For example, when transmitting HARQ ACK information of PDSCH corresponding to PUSCH scheduled by RAR uplink grant on PUCCH, UE 200 uses DCI by CRC scrambled by TC-RNTI (DCI with CRC scrambled by TC-RNTI ) may be used for PUCCH transmission.
  • DCI DCI with CRC scrambled by TC-RNTI
  • the spatial domain transmission filter (transmission beam) applied to PUCCH transmission in relation to repeated transmission of PUSCH may be preset, or may be notified by system information (eg, SIB1, etc.), It may be configured by RRC parameters or may be configured based on the PDCCH that triggered the RACH procedure.
  • the spatial domain transmit filters applied to PUCCH transmissions in relation to repeated transmissions of PUSCH may be set in the spatial settings for PUCCH transmissions, such as PUCCH-SpatialRelationInfo.
  • the gNB 100 and the UE 200 contain functionality that implements the embodiments described above. However, the gNB 100 and the UE 200 may each have only part of the functions in the example.
  • FIG. 6 is a diagram showing an example of the functional configuration of the gNB 100. As shown in FIG. As shown in FIG. 6, gNB 100 has receiver 101 , transmitter 102 and controller 103 .
  • the functional configuration shown in FIG. 6 is merely an example. As long as the operation according to the embodiment of the present invention can be performed, the functional division and the names of the functional units may be arbitrary.
  • the receiving unit 101 includes a function of receiving various signals transmitted from the UE 200 and acquiring, for example, higher layer information from the received signals.
  • the transmission unit 102 includes a function of generating a signal to be transmitted to the UE 200 and transmitting the signal by wire or wirelessly.
  • the control unit 103 stores preset setting information and various setting information to be transmitted to the UE 200 in the storage device, and reads them from the storage device as necessary. Also, the control unit 103 executes processing related to communication with the UE 200 .
  • a functional unit related to signal transmission in control unit 103 may be included in transmitting unit 102
  • a functional unit related to signal reception in control unit 103 may be included in receiving unit 101 .
  • FIG. 7 is a diagram showing an example of the functional configuration of the UE 200. As shown in FIG. As shown in FIG. 7, UE 200 has transmitting section 201 , receiving section 202 and control section 203 .
  • the functional configuration shown in FIG. 7 is merely an example. As long as the operation according to the embodiment of the present invention can be performed, the functional division and the names of the functional units may be arbitrary.
  • the transmission unit 201 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 202 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. Also, the receiving unit 202 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, reference signals, or the like transmitted from the gNB 100 .
  • the control unit 203 stores various setting information received from the gNB 100 by the receiving unit 202 in the storage device, and reads them from the storage device as necessary. Also, the control unit 203 executes processing related to communication with the gNB 100 .
  • a functional unit related to signal transmission in control unit 203 may be included in transmitting unit 201
  • a functional unit related to signal reception in control unit 203 may be included in receiving unit 202 .
  • each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separated devices (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • Functions include judging, determining, determining, calculating, calculating, processing, deriving, examining, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
  • a functional block (component) that performs transmission is called a transmitting unit or transmitter. In either case, as described above, the implementation method is not particularly limited.
  • the gNB 100 and the UE 200 may function as computers that perform processing of the wireless communication method of the present disclosure.
  • FIG. 8 is a diagram illustrating an example of a hardware configuration of gNB 100 and UE 200 according to an embodiment of the present disclosure.
  • the gNB 100 and UE 200 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the term "apparatus” can be read as a circuit, device, unit, or the like.
  • the hardware configuration of the gNB 100 and the UE 200 may be configured to include one or more of each device shown in FIG. 8, or may be configured without some devices.
  • Each function in the gNB 100 and the UE 200 is performed by the processor 1001 by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs calculations, the communication by the communication device 1004 is controlled, and the memory 1002 and by controlling at least one of reading and writing of data in the storage 1003 .
  • predetermined software program
  • the processor 1001 for example, operates an operating system and controls the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like.
  • CPU central processing unit
  • the control units 103 and 203 described above may be implemented by the processor 1001 .
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to them.
  • programs program codes
  • software modules software modules
  • data etc.
  • the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
  • the control units 103 and 203 of the gNB 100 and the UE 200 may be stored in the memory 1002 and implemented by a control program running on the processor 1001, and other functional blocks may be similarly implemented.
  • FIG. Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from a network via an electric communication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one of, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be
  • ROM Read Only Memory
  • EPROM Erasable Programmable ROM
  • EEPROM Electrical Erasable Programmable ROM
  • RAM Random Access Memory
  • the memory 1002 may also be called a register, cache, main memory (main storage device), or the like.
  • the memory 1002 can store executable programs (program code), software modules, etc. for implementing a wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disc, a magneto-optical disc (for example, a compact disc, a digital versatile disc, a Blu-ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
  • Storage 1003 may also be called an auxiliary storage device.
  • the storage medium described above may be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003 .
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). may consist of For example, antennas included in gNB 100 and UE 200 may be implemented by communication device 1004 .
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
  • the output device 1006 is an output device (for example, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).
  • Each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • Each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • Devices such as the processor 1001 and the memory 1002 are connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between devices.
  • a vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029. , an information service unit 2012 and a communication module 2013 .
  • a communication device mounted on vehicle 2001 may be applied to communication module 2013, for example.
  • the driving unit 2002 is configured by, for example, an engine, a motor, or a hybrid of the engine and the motor.
  • the steering unit 2003 includes at least a steering wheel (also referred to as steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031 , a memory (ROM, RAM) 2032 and a communication port (IO port) 2033 . Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010 .
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • the signals from the various sensors 2021 to 2029 include the current signal from the current sensor 2021 that senses the current of the motor, the rotation speed signal of the front and rear wheels acquired by the rotation speed sensor 2022, and the front wheel acquired by the air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal obtained by vehicle speed sensor 2024, acceleration signal obtained by acceleration sensor 2025, accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, brake pedal sensor 2026 obtained by There are a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service unit 2012 includes various devices such as car navigation systems, audio systems, speakers, televisions, and radios for providing various types of information such as driving information, traffic information, and entertainment information, and one or more devices for controlling these devices. ECU.
  • the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide passengers of the vehicle 2001 with various multimedia information and multimedia services.
  • Driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, automatic driving vehicle (AV) map, etc. ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, AI processors, etc., to prevent accidents and reduce the driver's driving load. and one or more ECUs for controlling these devices.
  • the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via communication ports.
  • the communication module 2013 communicates with the vehicle 2001 through the communication port 2033, the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axle 2009, the electronic Data is transmitted and received between the microprocessor 2031 and memory (ROM, RAM) 2032 in the control unit 2010 and the sensors 2021-29.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from an external device via wireless communication.
  • Communication module 2013 may be internal or external to electronic control unit 2010 .
  • the external device may be, for example, a base station, a mobile station, or the like.
  • the communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication.
  • the communication module 2013 receives the rotation speed signal of the front and rear wheels obtained by the rotation speed sensor 2022, the air pressure signal of the front and rear wheels obtained by the air pressure sensor 2023, and the vehicle speed sensor. 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, and a shift lever.
  • a shift lever operation signal obtained by the sensor 2027 and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028 are also transmitted to an external device via wireless communication.
  • the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service unit 2012 provided in the vehicle 2001 .
  • Communication module 2013 also stores various information received from external devices in memory 2032 available to microprocessor 2031 .
  • the microprocessor 2031 controls the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, and the axle 2009 provided in the vehicle 2001.
  • sensors 2021 to 2029 and the like may be controlled.
  • a control unit that controls repeated transmission of an uplink data channel scheduled in a random access procedure, and uplink control by the transmission beam used for the repeated transmission A terminal for transmitting a channel is provided.
  • the transmitting unit performs the uplink control according to a transmission beam used for repeated transmission of an uplink data channel scheduled for initial transmission or an uplink data channel scheduled for retransmission. Channels may be sent. According to this embodiment, it is possible to transmit PUCCH by the transmission beam used for PUSCH scheduled by RAR UL grant or PUSCH scheduled by DCI with CRC scrambled by TC-RNTI.
  • the transmitting unit transmits the uplink control channel using a transmission beam used for a specific slot among slots in which an uplink data channel scheduled for initial transmission is repeatedly transmitted. You may According to this embodiment, even if the transmission beam is changed between repeated transmissions of PUSCH, it is possible to transmit PUCCH using the transmission beam used for the specific slot.
  • the transmitting unit may transmit the uplink control channel using a transmission beam used for transmitting the random access channel in the random access procedure. According to this embodiment, it is possible to transmit the PUCCH using the transmission beam used for the random access channel.
  • a control unit that schedules an uplink data channel for repeated transmission in a random access procedure, and a receiver that receives an uplink control channel by the transmission beam used for the repeated transmission , is provided.
  • a wireless communication method performed by a terminal comprising:
  • the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
  • the processing order may be changed as long as there is no contradiction.
  • the gNB 100 and the UE 200 have been described using functional block diagrams for convenience of process description, such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor possessed by the wireless communication node 10 according to the embodiment of the present invention and the software operated by the processor possessed by the terminal 20 according to the embodiment of the present invention are respectively a random access memory (RAM), a flash memory, and a read-only memory. It may be stored in memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
  • notification of information includes physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may also be called an RRC message, and may be, for example, an RRC connection setup message, an RRC connection reconfiguration message, or the like.
  • Each aspect/embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (New Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark) )), IEEE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, other suitable systems, and extended It may be applied to at least one of the next generation systems. Also, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).
  • Certain operations identified in this disclosure as being performed by an IAB node may also be performed by its upper node in some cases.
  • various operations performed for communication with a terminal may be performed by the IAB node and other network nodes other than the IAB node (e.g. MME or S-GW, etc. (including but not limited to).
  • MME or S-GW network nodes
  • the above example illustrates the case where there is one network node other than the IAB node, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • (input/output direction) Information and the like can be output from the upper layer (or lower layer) to the lower layer (or higher layer). It may be input and output via multiple network nodes.
  • Input/output information and the like may be stored in a specific location (for example, memory), or may be managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.
  • the determination may be made by a value represented by one bit (0 or 1), by a true/false value (Boolean: true or false), or by numerical comparison (for example, a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • Information, signal Information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • the channel and/or symbols may be signaling.
  • a signal may also be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system As used in this disclosure, the terms “system” and “network” are used interchangeably.
  • radio resources may be indexed.
  • an IAB node has the functionality of a base station.
  • Base Station (BS)", “radio base station”, “fixed station”, “NodeB”, “eNodeB (eNB)”, “gNodeB (gNB)”, “access point”)”,”transmissionpoint”,”receptionpoint”,”transmission/receptionpoint”,”cell”,”sector”,"cellgroup”,”carrier”
  • Terms such as “component carrier” may be used interchangeably.
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.
  • a base station can accommodate one or more (eg, three) cells.
  • the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (e.g., an indoor small base station (RRH: Communication services can also be provided by Remote Radio Head)).
  • RRH indoor small base station
  • the terms "cell” or “sector” refer to part or all of the coverage area of at least one of the base stations and base station subsystems that serve communication within such coverage.
  • terminal In this disclosure, terms such as “Mobile Station (MS),” “user terminal,” “User Equipment (UE),” “terminal,” etc. may be used interchangeably. .
  • a mobile station is defined by those skilled in the art as subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of a base station and a mobile station may be called a transmitter, a receiver, a communication device, and the like. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like.
  • the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a mobile station (user terminal).
  • communication between a base station and a mobile station is replaced with communication between a plurality of mobile stations (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
  • a mobile station may have the functions of the base station described above.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be read as side channels.
  • mobile stations in the present disclosure may be read as base stations.
  • the base station may have the functions that the mobile station has.
  • determining may encompass a wide variety of actions.
  • “Judgement”, “determining” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure);
  • "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
  • judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
  • judgment and “decision” may include considering that some action is “judgment” and “decision”.
  • judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
  • two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
  • the reference signal may be abbreviated as RS (Reference Signal), or may be referred to as Pilot according to the applicable standard.
  • a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be a fixed time length (eg, 1 ms) independent of numerology.
  • a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transmission and reception specific filtering operations performed by the receiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, and/or the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • radio frame configuration for example, transmission and reception specific filtering operations performed by the receiver in the frequency domain, specific windowing operations performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • one slot or one minislot may be called a TTI.
  • TTI Transmission Time Interval
  • at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms may be Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • an IAB node performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis. Note that the definition of TTI is not limited to this.
  • a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
  • a TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
  • the short TTI e.g., shortened TTI, etc.
  • a TTI having the above TTI length may be read instead.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in the RB may be the same regardless of the neumerology, eg twelve.
  • the number of subcarriers included in an RB may be determined based on neumerology.
  • the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
  • One TTI, one subframe, etc. may each consist of one or more resource blocks.
  • One or more RBs are physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. may be called.
  • PRBs physical resource blocks
  • SCGs sub-carrier groups
  • REGs resource element groups
  • PRB pairs RB pairs, etc. may be called.
  • a resource block may be composed of one or more resource elements (RE: Resource Element).
  • RE Resource Element
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a bandwidth part) represents a subset of contiguous common resource blocks (RBs) for a certain numerology in a certain carrier. good.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured in one carrier for a terminal.
  • At least one of the configured BWPs may be active, and the terminal may not expect to transmit or receive a given signal/channel outside the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be read as "BWP”.
  • radio frames, subframes, slots, minislots and symbols are only examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.
  • CP cyclic prefix
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean that "A and B are different from C”.
  • Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
  • notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
  • wireless communication system 100 base station (gNB) 200 terminal (UE)
  • gNB base station
  • UE terminal

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

Abstract

Un aspect de la présente divulgation concerne un terminal qui comprend une unité de commande et une unité de transmission. L'unité de commande commande la transmission répétée d'un canal de données de liaison montante programmé au sein d'une procédure d'accès aléatoire et l'unité de transmission transmet un canal de commande de liaison montante à l'aide d'un faisceau de transmission utilisé pour la transmission répétée.
PCT/JP2021/045691 2021-12-10 2021-12-10 Terminal, station de base et procédé de communication sans fil WO2023105797A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210306865A1 (en) * 2020-03-31 2021-09-30 Qualcomm Incorporated Beam sweep based random access msg 3 and msg 4

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
US20210306865A1 (en) * 2020-03-31 2021-09-30 Qualcomm Incorporated Beam sweep based random access msg 3 and msg 4

Non-Patent Citations (1)

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Title
SAMSUNG: "Coverage enhancement for channels other than PUSCH and PUCCH", 3GPP DRAFT; R1-2006164, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200817 - 20200828, 8 August 2020 (2020-08-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051917904 *

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