WO2019148455A1 - Équipement utilisateur et procédé de communication sans fil correspondant - Google Patents

Équipement utilisateur et procédé de communication sans fil correspondant Download PDF

Info

Publication number
WO2019148455A1
WO2019148455A1 PCT/CN2018/075143 CN2018075143W WO2019148455A1 WO 2019148455 A1 WO2019148455 A1 WO 2019148455A1 CN 2018075143 W CN2018075143 W CN 2018075143W WO 2019148455 A1 WO2019148455 A1 WO 2019148455A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
trs
power
beam sweeping
burst set
Prior art date
Application number
PCT/CN2018/075143
Other languages
English (en)
Inventor
Huei-Ming Lin
Hai Tang
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp., Ltd. filed Critical Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority to PCT/CN2018/075143 priority Critical patent/WO2019148455A1/fr
Priority to CN202310583497.3A priority patent/CN116436504A/zh
Priority to CN201880081141.7A priority patent/CN111480302B/zh
Publication of WO2019148455A1 publication Critical patent/WO2019148455A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06954—Sidelink beam training with support from third instance, e.g. the third instance being a base station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • 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
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • the present disclosure relates to the field of communication systems, and more particularly, to a user equipment and a method of wireless communication of same.
  • the 5G-NR system mobile communication may support wireless transmission and reception in super high frequency (SHF) spectrum and even extremely high frequency (EHF) spectrum such as mmW band, which is favorable for directional transceiver operations such as beamforming and multiple-input and multiple-output (MIMO) .
  • SHF super high frequency
  • EHF extremely high frequency
  • MIMO multiple-input and multiple-output
  • MIMO and/or beamforming-like operation may also be supported to enhance system operation and to support more advanced use cases.
  • LTE long term evolution
  • V2X vehicle-to-everything
  • V2V vehicle-to-vehicle
  • V2P vehicle-to-pedestrian
  • V2I/N vehicle-to-infrastructure/network
  • the UEs are transmit at maximum allowable power regardless of channel type such as control channel or data channel, signal type such as synchronization signals or reference signals, operating condition such as in-network coverage or out-of-network coverage, and communication type such as broadcast, groupcast or unicast to achieve a maximum signal coverage and a communication range.
  • channel type such as control channel or data channel
  • signal type such as synchronization signals or reference signals
  • operating condition such as in-network coverage or out-of-network coverage
  • communication type such as broadcast, groupcast or unicast to achieve a maximum signal coverage and a communication range.
  • MCS transmission-rate/modulation and coding scheme
  • An object of the present disclosure is to propose a user equipment (UE) and a method of wireless communication of the same capable of performing beamforming operation and setting transmission related parameters for sidelink communication in a group environment.
  • UE user equipment
  • a user equipment for wireless communication includes a memory and a processor coupled to the memory.
  • the processor is configured to perform a group communication over a sidelink interface to at least one second user equipment and periodically perform a beam sweeping of at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS toward the at least one second user equipment.
  • TRS tracking reference signal
  • the processor is further configured to receive, from the at least one second user equipment, report information including at least one of information related to a selected optimal beam sweeping direction and information related to a setting of transmission parameters.
  • the processor is configured to periodically perform the beam sweeping of the at least one TRS in the different spatial directions in the burst set of the at least one TRS toward the at least one second user equipment depending on at least one of a traveling speed of the user equipment and a tone spacing of a transmission carrier.
  • the burst set of the at least one TRS includes at least one of a full beam sweeping mode and a condense beam sweeping mode.
  • the burst set of the at least one TRS is in the full beam sweeping mode, each beam sweeping direction is applied to an entire transmission of a transmission time interval (TTI) , and a duration of the burst set of the at least one TRS is a number of beam sweeping directions times a length of the TTI.
  • TTI transmission time interval
  • the TTI for each beam sweeping direction includes a guard period (GP) /automatic gain control (AGC) region, a physical sidelink control channel (PSCCH) , a training RS, and a physical sidelink shared channel (PSSCH) .
  • GP guard period
  • AGC automatic gain control
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the PSCCH carries at least a part of a source identity of the user equipment, a beam index number for the at least one TRS, a resource allocation and a size of the at least one TRS within the TTI, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, and a resource allocation of the PSSCH within the TTI.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the burst set of the at least one TRS in the condense beam sweeping mode is applied to an entire transmission of a TTI and includes a guard period (GP) /automatic gain control (AGC) region, a PSCCH carrying sidelink control information (SCI) for scheduling the at least one TRS, and a TRS beam sweeping region.
  • GP guard period
  • AGC automatic gain control
  • SCI sidelink control information
  • the SCI includes at least a part of a source identity of the user equipment, a number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, a processing gap length, and a beam feedback.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode corresponds to a number of beam sweeping directions.
  • the SCI further indicates at least one of a gap region and a feedback region.
  • a user equipment for wireless communication includes a memory and a processor coupled to the memory.
  • the processor is configured to perform a group communication over a sidelink interface to at least one second user equipment, receive at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS from the at least one second user equipment, calculate at least one of a reference signal received power (RSRP) and a received signal strength indicator (RSSI) for the at least one TRS in a burst set of the at least one TRS, and select an optimal beam sweeping direction based on at least one of an optimal RSRP result and an optimal RSSI result.
  • TRS tracking reference signal
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • the processor is further to configured to determine the optimal beam sweeping direction for transmission towards the at least one second user equipment based on at least one of an estimated time of arrival (ToA) , an angle of arrival (AoA) , and a direction of arrival (DoA) of the optimal beam sweeping direction from the at least one second user equipment.
  • ToA estimated time of arrival
  • AoA angle of arrival
  • DoA direction of arrival
  • a number of the at least one second user equipment is at least two, the optimal beam sweeping direction towards one second user equipment is also the optimal beam sweeping direction for another second user equipment.
  • the processor is further configured to transmit, to the at least one second user equipment, report information including at least one of information related to the optimal beam sweeping direction and information related to a setting of transmission parameters.
  • the burst set of the at least one TRS includes at least one of a full beam sweeping mode and a condense beam sweeping mode.
  • the burst set of the at least one TRS is in the full beam sweeping mode, each beam sweeping direction is applied to an entire transmission of a transmission time interval (TTI) , and a duration of the burst set of the at least one TRS is a number of beam sweeping directions times a length of the TTI.
  • TTI transmission time interval
  • the TTI for each beam sweeping direction includes a guard period (GP) /automatic gain control (AGC) region, a physical sidelink control channel (PSCCH) , a training RS, and a physical sidelink shared channel (PSSCH) .
  • GP guard period
  • AGC automatic gain control
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the PSCCH carries at least a part of a source identity of the at least one second user equipment, a beam index number for the at least one TRS, a resource allocation and a size of the at least one TRS within the TTI, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, and a resource allocation of the PSSCH within the TTI.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the burst set of the at least one TRS in the condense beam sweeping mode is applied to an entire transmission of a TTI and includes a guard period (GP) /automatic gain control (AGC) region, a PSCCH carrying sidelink control information (SCI) for scheduling the at least one TRS, and a TRS beam sweeping region.
  • GP guard period
  • AGC automatic gain control
  • SCI sidelink control information
  • the SCI includes at least a part of a source identity, a number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, a processing gap length, and a beam feedback.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode corresponds to a number of beam sweeping directions.
  • the SCI further indicates at least one of a gap region and a feedback region.
  • the processor is further configured to derive a pathloss measurement for the optimal beam sweeping direction from the at least one second user equipment.
  • the processor is further configured to derive the pathloss measurement according to at least one of the following equations:
  • PathLoss (PL) Min ⁇ P_powerclass, P_cmax ⁇ –power_offset –RSRP or
  • PathLoss (PL) Min ⁇ P_powerclass, P_cmax ⁇ –power_offset –RSSI,
  • power_offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power
  • P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band
  • P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • the processor is further configured to determine a modulation and coding scheme (MCS) level for a next transmission from the at least one second user equipment based on the pathloss measurement.
  • MCS modulation and coding scheme
  • the processor is further configured to determine the MCS level for the next transmission from the at least one second user equipment based on a highest pathloss measurement.
  • the processor is further configured to set an output power level for the at least one second user equipment for the next transmission based on the MCS level and the pathloss measurement.
  • a method of wireless communication of a user equipment includes performing a group communication over a sidelink interface to at least one second user equipment and periodically performing a beam sweeping of at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS toward the at least one second user equipment.
  • TRS tracking reference signal
  • the method further includes receiving, from the at least one second user equipment, report information including at least one of information related to a selected optimal beam sweeping direction and information related to a setting of transmission parameters.
  • the method further includes periodically performing the beam sweeping of the at least one TRS in the different spatial directions in the burst set of the at least one TRS toward the at least one second user equipment depending on at least one of a traveling speed of the user equipment and a tone spacing of a transmission carrier.
  • the burst set of the at least one TRS includes at least one of a full beam sweeping mode and a condense beam sweeping mode.
  • the burst set of the at least one TRS is in the full beam sweeping mode, each beam sweeping direction is applied to an entire transmission of a transmission time interval (TTI) , and a duration of the burst set of the at least one TRS is a number of beam sweeping directions times a length of the TTI.
  • TTI transmission time interval
  • the TTI for each beam sweeping direction includes a guard period (GP) /automatic gain control (AGC) region, a physical sidelink control channel (PSCCH) , a training RS, and a physical sidelink shared channel (PSSCH) .
  • GP guard period
  • AGC automatic gain control
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the PSCCH carries at least a part of a source identity of the user equipment, a beam index number for the at least one TRS, a resource allocation and a size of the at least one TRS within the TTI, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, and a resource allocation of the PSSCH within the TTI.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the method further the burst set of the at least one TRS in the condense beam sweeping mode is applied to an entire transmission of a TTI and includes a guard period (GP) /automatic gain control (AGC) region, a PSCCH carrying sidelink control information (SCI) for scheduling the at least one TRS, and a TRS beam sweeping region.
  • GP guard period
  • AGC automatic gain control
  • SCI sidelink control information
  • the SCI includes at least a part of a source identity of the user equipment, a number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, a processing gap length, and a beam feedback.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode corresponds to a number of beam sweeping directions.
  • the SCI further indicates at least one of a gap region and a feedback region.
  • a method of wireless communication of a user equipment includes performing a group communication over a sidelink interface to at least one second user equipment, receiving at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS from the at least one second user equipment, calculating at least one of a reference signal received power (RSRP) and a received signal strength indicator (RSSI) for the at least one TRS in a burst set of the at least one TRS, and selecting an optimal beam sweeping direction based on at least one of an optimal RSRP result and an optimal RSSI result.
  • TRS tracking reference signal
  • RSSI received signal strength indicator
  • the method further includes determining the optimal beam sweeping direction for transmission towards the at least one second user equipment based on at least one of an estimated time of arrival (ToA) , an angle of arrival (AoA) , and a direction of arrival (DoA) of the optimal beam sweeping direction from the at least one second user equipment.
  • ToA estimated time of arrival
  • AoA angle of arrival
  • DoA direction of arrival
  • a number of the at least one second user equipment is at least two, the optimal beam sweeping direction towards one second user equipment is also the optimal beam sweeping direction for another second user equipment.
  • the method further includes transmitting, to the at least one second user equipment, report information including at least one of information related to the optimal beam sweeping direction and information related to a setting of transmission parameters.
  • the burst set of the at least one TRS includes at least one of a full beam sweeping mode and a condense beam sweeping mode.
  • the burst set of the at least one TRS is in the full beam sweeping mode, each beam sweeping direction is applied to an entire transmission of a transmission time interval (TTI) , and a duration of the burst set of the at least one TRS is a number of beam sweeping directions times a length of the TTI.
  • TTI transmission time interval
  • the TTI for each beam sweeping direction includes a guard period (GP) /automatic gain control (AGC) region, a physical sidelink control channel (PSCCH) , a training RS, and a physical sidelink shared channel (PSSCH) .
  • GP guard period
  • AGC automatic gain control
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the PSCCH carries at least a part of a source identity of the at least one second user equipment, a beam index number for the at least one TRS, a resource allocation and a size of the at least one TRS within the TTI, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, and a resource allocation of the PSSCH within the TTI.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the burst set of the at least one TRS in the condense beam sweeping mode is applied to an entire transmission of a TTI and includes a guard period (GP) /automatic gain control (AGC) region, a PSCCH carrying sidelink control information (SCI) for scheduling the at least one TRS, and a TRS beam sweeping region.
  • GP guard period
  • AGC automatic gain control
  • SCI sidelink control information
  • the SCI includes at least a part of a source identity, a number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, a processing gap length, and a beam feedback.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode corresponds to a number of beam sweeping directions.
  • the SCI further indicates at least one of a gap region and a feedback region.
  • the method further includes deriving a pathloss measurement for the optimal beam sweeping direction from the at least one second user equipment.
  • the method further includes deriving the pathloss measurement according to at least one of the following equations:
  • PathLoss (PL) Min ⁇ P_powerclass, P_cmax ⁇ –power_offset –RSRP or
  • PathLoss (PL) Min ⁇ P_powerclass, P_cmax ⁇ –power_offset –RSSI;
  • power_offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power
  • P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band
  • P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • the method further includes determining a modulation and coding scheme (MCS) level for a next transmission from the at least one second user equipment based on the pathloss measurement.
  • MCS modulation and coding scheme
  • the method further includes determining the MCS level for the next transmission from the at least one second user equipment based on a highest pathloss measurement.
  • the method further includes setting an output power level for the at least one second user equipment for the next transmission based on the MCS level and the pathloss measurement.
  • a user equipment for wireless communication includes a memory and a processor coupled to the memory.
  • the processor is configured to perform a group communication over a sidelink interface to at least one second user equipment, receive at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS from the at least one second user equipment, and select an optimal beam sweeping direction, wherein the burst set of the at least one TRS is in a full beam sweeping mode, each beam sweeping direction is applied to an entire transmission of a transmission time interval (TTI) , and a duration of the burst set of the at least one TRS is a number of beam sweeping directions times a length of the TTI.
  • TTI transmission time interval
  • the TTI for each beam sweeping direction includes a guard period (GP) /automatic gain control (AGC) region, a physical sidelink control channel (PSCCH) , a training RS, and a physical sidelink shared channel (PSSCH) .
  • GP guard period
  • AGC automatic gain control
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the PSCCH carries at least a part of a source identity of the at least one second user equipment, a beam index number for the at least one TRS, a resource allocation and a size of the at least one TRS within the TTI, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, and a resource allocation of the PSSCH within the TTI.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • a user equipment for wireless communication includes a memory and a processor coupled to the memory.
  • the processor is configured to perform a group communication over a sidelink interface to at least one second user equipment, receive at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS from the at least one second user equipment, and select an optimal beam sweeping direction, wherein the burst set of the at least one TRS is in a condense beam sweeping mode and includes a guard period (GP) /automatic gain control (AGC) region, a PSCCH carrying sidelink control information (SCI) for scheduling the at least one TRS, and a TRS beam sweeping region.
  • GP guard period
  • AGC automatic gain control
  • SCI sidelink control information
  • the SCI includes at least a part of a source identity, a number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, a processing gap length, and a beam feedback.
  • the source identity is a media access control (MAC) layer address.
  • MAC media access control
  • the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the at least one second user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission.
  • the maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment to the at least one second user equipment.
  • a non-zero power offset means a lower power than the maximum power level.
  • the number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode corresponds to a number of beam sweeping directions.
  • the SCI further indicates at least one of a gap region and a feedback region.
  • the user equipment and the method of wireless communication of the same are capable of performing beamforming operation and setting transmission related parameters for sidelink communication in a group environment, such that the user equipment could save battery, perform long operation time, and/or have good operating performance from less interference.
  • FIG. 1 is a block diagram of a user equipment for wireless communication according to an embodiment of the present disclosure.
  • FIG. 2 is a flowchart illustrating a method of wireless communication according to the present disclosure, from an aspect of operation of a user equipment for transmitting signals.
  • FIG. 3 is a flowchart illustrating a method of wireless communication according to the present disclosure, from an aspect of operation of a user equipment for receiving signals.
  • FIG. 4 is a diagram of a beam sweeping of at least one tracking reference signal (TRS) according to an embodiment of the present disclosure.
  • TRS tracking reference signal
  • FIG. 5 is a diagram of a burst set of at least one TRS is in a full beam sweeping mode according to an embodiment of the present disclosure.
  • FIG. 6 is a diagram of a burst set of at least one TRS is in a condense beam sweeping mode according to an embodiment of the present disclosure.
  • FIG. 7 is a scenario of a plurality of user equipments participating in a sidelink group communication according to an embodiment of the present disclosure.
  • FIG. 1 illustrates that, in some embodiments, at least one user equipment (UE) 100 for wireless communication includes a memory 102 and a processor 104 coupled to the memory 102.
  • the processor 104 is configured to perform a group communication over a sidelink interface such as a PC5 interface to at least one user equipment 200 and periodically perform a beam sweeping of at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS toward the at least one user equipment 200, such that the at least one user equipment 100 could save battery, perform long operation time, and/or have good operating performance from less interference.
  • the at least one user equipment 100 may be a user equipment for transmitting signals and the at least one user equipment 200 may be a user equipment for receiving signals.
  • the group communication between the at least one user equipment 100 and the at least one user equipment 200 over the sidelink interface such as the PC5 interface could be based on LTE sidelink technology developed under 3rd generation partnership project (3GPP) in Release 14 and/or 5th generation new radio 5G-NR radio access technology.
  • 3GPP 3rd generation partnership project
  • FIG. 1 further illustrates that, in some embodiments, the at least one user equipment 200 for wireless communication includes a memory 202 and a processor 204 coupled to the memory 202.
  • the processor 204 is configured to perform a group communication over a sidelink interface such as a PC5 interface with the at least one user equipment 100, receive at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS from the at least one user equipment 100, calculate at least one of a reference signal received power (RSRP) and a received signal strength indicator (RSSI) for the at least one TRS in a burst set of the at least one TRS, and select an optimal beam sweeping direction based on at least one of an optimal RSRP result and an optimal RSSI result, such that the at least one user equipment 100 could save battery, perform long operation time, and/or have good operating performance from less interference.
  • TRS tracking reference signal
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • the processor 204 is further to configured to determine the optimal beam sweeping direction for transmission towards the at least one user equipment 100 based on at least one of an estimated time of arrival (ToA) , an angle of arrival (AoA) , and a direction of arrival (DoA) of the optimal beam sweeping direction from the at least one user equipment 100.
  • a number of the at least one user equipment 100 is at least two, the optimal beam sweeping direction towards one user equipment 100 is also the optimal beam sweeping direction for another user equipment 100.
  • the processor 204 is further configured to transmit, to the at least one user equipment 100, report information including at least one of information related to the optimal beam sweeping direction and information related to a setting of transmission parameters.
  • the processor 204 is further configured to derive a pathloss measurement for the optimal beam sweeping direction from the at least one user equipment 100.
  • the processor 204 is further configured to derive the pathloss measurement according to at least one of the following equations:
  • PathLoss (PL) Min ⁇ P_powerclass, P_cmax ⁇ –power_offset –RSRP or
  • PathLoss (PL) Min ⁇ P_powerclass, P_cmax ⁇ –power_offset –RSSI,
  • power_offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power
  • P_powerclass is a power class level of the at least one user equipment 100 for a communicating frequency band
  • P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • the processor 204 is further configured to determine a modulation and coding scheme (MCS) level for a next transmission from the at least one user equipment 100 based on the pathloss measurement.
  • MCS modulation and coding scheme
  • the processor 204 is further configured to determine the MCS level for the next transmission from the at least one user equipment 100 based on a highest pathloss measurement.
  • the processor 204 is further configured to set an output power level for the at least one user equipment 100 for the next transmission based on the MCS level and the pathloss measurement.
  • the memories 102 and 202 each may include read-only memory (ROM) , random access memory (RAM) , flash memory, memory card, storage medium and/or other storage device.
  • the processors 104 and 204 each may include application-specific integrated circuit (ASIC) , other chipset, logic circuit and/or data processing device.
  • the processors 104 and 204 each may also include baseband circuitry to process radio frequency signals.
  • the techniques described herein can be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein.
  • the modules can be stored in memories 102 and 202 and executed by processors 104 and 204.
  • the memories 102 and 202 can be implemented within the processors 104 and 204 or external to the processors 104 and 204 in which case those can be communicatively coupled to the processors 104 and 204 via various means as is known in the art.
  • the group communication between the at least one user equipment 100 and the at least one user equipment 200 relates to vehicle-to-everything (V2X) communication including vehicle-to-vehicle (V2V) , vehicle-to-pedestrian (V2P) , and vehicle-to-infrastructure/network (V2I/N) according to LTE sidelink technology developed under 3GPP in Release 14 and/or 5G-NR radio access technology.
  • V2X vehicle-to-everything
  • V2V vehicle-to-vehicle
  • V2P vehicle-to-pedestrian
  • V2I/N vehicle-to-infrastructure/network
  • FIG. 2 illustrates that, a method 300 of wireless communication according to the present disclosure, from an aspect of operation of the user equipment 100 for transmitting signals.
  • the method 300 includes: at block 302, performing a group communication over a sidelink interface as a PC 5 interface to at least one user equipment 200, and at block 304, periodically performing a beam sweeping of at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS toward the at least one user equipment 200, such that the at least one user equipment 100 could save battery, perform long operation time, and/or have good operating performance from less interference.
  • TRS tracking reference signal
  • FIG. 3 illustrates a method 400 of wireless communication according to the present disclosure, from an aspect of operation of the user equipment 200 for receiving signals.
  • the method 400 includes: at block 402, performing a group communication over a sidelink interface such as a PC 5 interface to the at least one user equipment 100, at block 404, receiving at least one tracking reference signal (TRS) in different spatial directions in a burst set of the at least one TRS from the at least one user equipment 100, at block 406, calculating at least one of a reference signal received power (RSRP) and a received signal strength indicator (RSSI) for the at least one TRS in a burst set of the at least one TRS, and at block 408, selecting an optimal beam sweeping direction based on at least one of an optimal RSRP result and an optimal RSSI result, such that the at least one user equipment 100 could save battery, perform long operation time, and/or have good operating performance from less interference.
  • TRS tracking reference signal
  • RSSI received signal strength indicator
  • FIG. 1 and FIGS. 4 to 6 illustrate that, in some embodiments, the processor 104 is further configured to receive, from the at least one user equipment 200, report information including at least one of information related to a selected optimal beam sweeping direction and information related to a setting of transmission parameters.
  • the processor 104 is configured to periodically perform the beam sweeping of the at least one TRS in the different spatial directions in the burst set of the at least one TRS toward the at least one user equipment 200 depending on at least one of a traveling speed of the at least one user equipment 100 and a tone spacing of a transmission carrier.
  • the processor 104 is configured to perform the beam sweeping of the at least one TRS at every periodic interval such as 5ms, 10ms, 20ms, 50ms, and 100ms.
  • the different spatial directions may be such as 4, 8, 16, 32, and 64 directions.
  • the burst set of the at least one TRS includes at least one of a full beam sweeping mode as illustrated in FIG. 5 and a condense beam sweeping mode as illustrated
  • FIG. 1 and FIG. 5 illustrate that, in some embodiments, the burst set of the at least one TRS is in the full beam sweeping mode.
  • Each beam sweeping direction is applied to an entire transmission of a transmission time interval (TTI) .
  • a duration of the burst set of the at least one TRS is a number of beam sweeping directions times a length of the TTI.
  • the TTI for each beam sweeping direction includes a guard period (GP) /automatic gain control (AGC) region, a physical sidelink control channel (PSCCH) , a training RS, and a physical sidelink shared channel (PSSCH) .
  • GP guard period
  • AGC automatic gain control
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • the PSCCH carries at least a part of a source identity of the user equipment 100, a beam index number for the at least one TRS, a resource allocation and a size of the at least one TRS within the TTI, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, and a resource allocation of the PSSCH within the TTI.
  • the training RS may occupy one or multiple orthogonal frequency division multiplex (OFDM) symbols.
  • the PSSCH may carry information data transport block (TB) .
  • the source identity is a media access control (MAC) layer address that uniquely identifies the user equipment 100 or a member number within the sidelink communicating group.
  • MAC media access control
  • FIG. 1 and FIG. 5 further illustrate that, in some embodiments, the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission. The maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment 100 to the at least one user equipment 200 to reach as many equipments as possible to notify and invite new group members join at any time.
  • a non-zero power offset means a lower power than the maximum power level. The lower power level could be set based on past history/detection of other group members’TRS to limit a transmission range and thus creating less interference and power saving.
  • FIG. 1 and FIG. 6 illustrate that, in some embodiments, the burst set of the at least one TRS is in the condense beam sweeping mode.
  • the burst set of the at least one TRS in the condense beam sweeping mode is applied to an entire transmission of a TTI and includes a guard period (GP) /automatic gain control (AGC) region, a PSCCH carrying sidelink control information (SCI) for scheduling the at least one TRS, and a TRS beam sweeping region.
  • GP guard period
  • AGC automatic gain control
  • SCI sidelink control information
  • the SCI includes at least a part of a source identity of the user equipment 100, a number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode, a power offset of beam transmissions of the at least one TRS, an absolute power of the beam transmissions of the at least one TRS, a processing gap length, and a beam feedback.
  • the source identity is a media access control (MAC) layer address that uniquely identifies the user equipment 100 or a member number within the sidelink communicating group.
  • the processing gap length could be a fixed length based on number of OFDM symbols.
  • the user equipment 200 uses the gap period for RSRP/RSSI measurement and selection of the optimal beam.
  • the beam feedback reports a region size and may assign resources to group members for multiplexing beam reports.
  • the at least one TRS is repeated and transmitted in all supported spatial directions.
  • the length of a TRS transmission may be as short as one OFDM symbol. If indicated in SCI, the gap region where the user equipment 200 can utilize the gap duration to calculate RSRP/RSSI measurement results for each transmitted TRS and select the optimal beam within the burst set. Based on number of TRS’s and length of each TRS transmission, a starting position for the gap region can be determined by the user equipment 200. If indicated in SCI, the feedback region is for beam reporting by the user equipment 200.
  • MAC media access control
  • FIG. 1 and FIG. 6 further illustrate that, in some embodiments, the power offset indicates a difference between Min ⁇ P_powerclass, P_cmax ⁇ and an actual TRS transmit power, where P_powerclass is a power class level of the user equipment for a communicating frequency band, P_cmax is a configured maximum output power for a serving cell when in a network coverage or a pre-configured maximum output power when out of the network coverage.
  • a zero power offset means a maximum power level allowable by a network for a TRS transmission. The maximum power level is configured for use during an initial group communication over the sidelink interface or in a platooning operation by the user equipment 100 to the at least one user equipment 200 to reach as many user equipments as possible to notify and invite new group members join at any time.
  • a non-zero power offset means a lower power than the maximum power level.
  • the lower power level could be set based on past history/detection of other group members’TRS to limit a transmission range and thus creating less interference and power saving.
  • the number of the at least one TRS within the burst set of the at least one TRS in the condense beam sweeping mode corresponds to a number of beam sweeping directions.
  • the SCI further indicates at least one of a gap region and a feedback region.
  • FIG. 7 illustrates that, in some embodiments, in every beam sweeping period of each transmitting user equipment, a receiving user equipment calculates RSRP or RSSI for each transmitted TRS within a burst set and selects an optimal beam based on an optimal RSRP/RSSI result such as the highest RSRP/RSSI result.
  • UEs user equipments
  • FIG. 7 where there are six user equipments (UEs) participating in sidelink group communication and UE3 measures RSRP/RSSI of all received TRS from all UEs and selects beam 3 being an optimal beam from UE1, beam 4 being an optimal beam from UE2, beam 1 being an optimal beam from UE4, beam 2 being an optimal beam from UE5, and beam 3 being an optimal beam from UE6.
  • UEs user equipments
  • the receiving UE determines suitable beam direction for a transmission towards each transmitting UE.
  • the suitable beam direction towards one UE may also be the optimal suitable beam direction for another UE.
  • UE3 determines beam 1 being an optimal suitable direction for transmitting towards UE4 and UE6, beam 2 being an optimal suitable direction for transmitting towards UE1 and UE5, and beam 3 being an optimal suitable direction for transmitting towards UE2.
  • PL PathLoss
  • the receiving UE determines a suitable MCS level for a next transmission to the group. That is, the Rx UE selects a MCS level corresponding to the highest PL link, such that a common MCS is used for a next groupcast transmission and decodable to all members in the group.
  • the Rx UE may also take into account of its own data buffer status so that data buffering is kept at a minimal level.
  • MCS Required_Rx_power
  • P_Tx (beam x) Required_Tx_power (MCS) + PL (selected optimal beam) .
  • MCS Required_Tx_power
  • PL selected optimal beam
  • the user equipment and the method of wireless communication of the same are capable of performing beamforming operation and setting transmission related parameters for sidelink communication in a group environment, such that the user equipment could save battery, perform long operation time, and/or have good operating performance from less interference.
  • the units as separating components for explanation are or are not physically separated.
  • the units for display are or are not physical units, that is, located in one place or distributed on a plurality of network units. Some or all of the units are used according to the purposes of the embodiments.
  • each of the functional units in each of the embodiments can be integrated in one processing unit, physically independent, or integrated in one processing unit with two or more than two units.
  • the software function unit is realized and used and sold as a product, it can be stored in a readable storage medium in a computer.
  • the technical plan proposed by the present disclosure can be essentially or partially realized as the form of a software product.
  • one part of the technical plan beneficial to the conventional technology can be realized as the form of a software product.
  • the software product in the computer is stored in a storage medium, including a plurality of commands for a computational device (such as a personal computer, a server, or a network device) to run all or some of the steps disclosed by the embodiments of the present disclosure.
  • the storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM) , a random access memory (RAM) , a floppy disk, or other kinds of media capable of storing program codes.

Landscapes

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

Abstract

L'invention concerne un équipement utilisateur et un procédé de communication sans fil correspondant. L'équipement utilisateur comprend une mémoire et un processeur couplé à la mémoire. Le processeur est configuré pour effectuer une communication de groupe sur une interface de liaison latérale vers au moins un second équipement utilisateur et effectuer périodiquement un balayage de faisceau d'au moins un signal de référence de suivi (TRS) dans différentes directions spatiales dans un ensemble de rafales desdits TRS vers lesdits seconds équipements utilisateur.
PCT/CN2018/075143 2018-02-02 2018-02-02 Équipement utilisateur et procédé de communication sans fil correspondant WO2019148455A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2018/075143 WO2019148455A1 (fr) 2018-02-02 2018-02-02 Équipement utilisateur et procédé de communication sans fil correspondant
CN202310583497.3A CN116436504A (zh) 2018-02-02 2018-02-02 用户设备及其无线通信方法
CN201880081141.7A CN111480302B (zh) 2018-02-02 2018-02-02 用户设备及其无线通信方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/075143 WO2019148455A1 (fr) 2018-02-02 2018-02-02 Équipement utilisateur et procédé de communication sans fil correspondant

Publications (1)

Publication Number Publication Date
WO2019148455A1 true WO2019148455A1 (fr) 2019-08-08

Family

ID=67478592

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/075143 WO2019148455A1 (fr) 2018-02-02 2018-02-02 Équipement utilisateur et procédé de communication sans fil correspondant

Country Status (2)

Country Link
CN (2) CN116436504A (fr)
WO (1) WO2019148455A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021034572A1 (fr) * 2019-08-16 2021-02-25 Convida Wireless, Llc Gestion de faisceau pour communications de véhicule nouvelle radio
CN113498014A (zh) * 2020-03-20 2021-10-12 诺基亚技术有限公司 针对非地面网络中上行链路传输和命令激活的组定时调整
WO2024050702A1 (fr) * 2022-09-06 2024-03-14 Nokia Shanghai Bell Co., Ltd. Balayage de faisceau de transmission par liaison latérale
WO2024058947A1 (fr) * 2022-09-16 2024-03-21 Qualcomm Incorporated Bloc de gestion de faisceau pour liaison latérale

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015195379A1 (fr) * 2014-06-18 2015-12-23 Qualcomm Incorporated Découverte initiée par un équipement utilisateur (ue) dans des réseaux d'accès sans fil à longueur d'onde millimétrique assistés

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56119917A (en) * 1980-02-28 1981-09-19 Victor Co Of Japan Ltd Track deviation detecting system in magnetic recording and reproducing device
JP6121931B2 (ja) * 2014-03-20 2017-04-26 株式会社Ｎｔｔドコモ 移動通信システム、基地局、およびユーザ装置
US11563505B2 (en) * 2016-06-01 2023-01-24 Qualcomm Incorporated Time division multiplexing of synchronization channels

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015195379A1 (fr) * 2014-06-18 2015-12-23 Qualcomm Incorporated Découverte initiée par un équipement utilisateur (ue) dans des réseaux d'accès sans fil à longueur d'onde millimétrique assistés

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NTT DOCOMO: "3rd Generation Partnership Project. ''Study on New Radio (NR) Access Technology (Release 14", 3GPP TR38.912V1.0.0, 31 March 2017 (2017-03-31), pages 19 - 20 , 29-30, XP051508219 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021034572A1 (fr) * 2019-08-16 2021-02-25 Convida Wireless, Llc Gestion de faisceau pour communications de véhicule nouvelle radio
CN113498014A (zh) * 2020-03-20 2021-10-12 诺基亚技术有限公司 针对非地面网络中上行链路传输和命令激活的组定时调整
WO2024050702A1 (fr) * 2022-09-06 2024-03-14 Nokia Shanghai Bell Co., Ltd. Balayage de faisceau de transmission par liaison latérale
WO2024058947A1 (fr) * 2022-09-16 2024-03-21 Qualcomm Incorporated Bloc de gestion de faisceau pour liaison latérale

Also Published As

Publication number Publication date
CN116436504A (zh) 2023-07-14
CN111480302A (zh) 2020-07-31
CN111480302B (zh) 2023-05-16

Similar Documents

Publication Publication Date Title
US20220302975A1 (en) Adaptive numerology for beamforming training
CN110313199B (zh) 多输入多输出无线系统的探测参考信号功率控制
US11637667B2 (en) Method and apparatus for transmitting and receiving uplink signal, storage medium, and electronic device
CN109155656B (zh) 波束选择的方法、系统和装置
KR101387857B1 (ko) 무선 통신 장치, 기지국 및 그것의 안테나 포트 모드 및 송신 모드 이행을 위한 방법
EP3547741B1 (fr) Procédé de commande de puissance et dispositif de communication
WO2019148455A1 (fr) Équipement utilisateur et procédé de communication sans fil correspondant
WO2021022952A1 (fr) Procédé et dispositif de transmission de signal
WO2022036541A1 (fr) Coordination de réseau permettant la gestion d'interférence de détection
US9954642B2 (en) Spatial contention in dense wireless network
US20140200021A1 (en) Interference Processing Method and Device
KR20220054635A (ko) 기준 신호들의 방출 제한 전송
CN108075783B (zh) 一种通信的方法及设备
US20230269709A1 (en) Physical uplink control channel resource indication for dynamic time division duplex
KR20230073147A (ko) 무선 통신 시스템에서 빔 관리 방법 및 장치
CN104349498B (zh) 蜂窝小区中基于mimo预编码的d2d对用户调度方法
CN116746076A (zh) 接收用于无线设备之间的通信的空间配置指示
WO2019148411A1 (fr) Équipement utilisateur et son procédé de communication sans fil
US20230179283A1 (en) Method for setting reception beam in electronic device receiving signals transmitted from plurality of trps and electronic device
WO2018132593A1 (fr) Capacité d'auto-classification de dispositifs multi-gigabits directionnels améliorés
US20240048318A1 (en) Transmission configuration indication state for carrier aggregation scheduling
WO2022151391A1 (fr) Procédé et appareil d'ajustement de fréquence d'envoi
WO2019148414A1 (fr) Équipement d'utilisateur et son procédé de communication sans fil
CN117769027A (zh) 多用户多输入多输出的终端设备确定方法、设备及系统
CN116633479A (zh) 波束训练方法及通信装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18903999

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18903999

Country of ref document: EP

Kind code of ref document: A1