WO2019161112A1 - Downlink transmission beam configuration techniques for wireless communications - Google Patents

Downlink transmission beam configuration techniques for wireless communications Download PDF

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Publication number
WO2019161112A1
WO2019161112A1 PCT/US2019/018084 US2019018084W WO2019161112A1 WO 2019161112 A1 WO2019161112 A1 WO 2019161112A1 US 2019018084 W US2019018084 W US 2019018084W WO 2019161112 A1 WO2019161112 A1 WO 2019161112A1
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WIPO (PCT)
Prior art keywords
control resource
downlink transmission
resource set
beamforming parameters
downlink
Prior art date
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Ceased
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PCT/US2019/018084
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English (en)
French (fr)
Inventor
Makesh Pravin John Wilson
Tao Luo
Sony Akkarakaran
Bilal SADIQ
Xiao Feng Wang
Yan Zhou
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Qualcomm Inc
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Qualcomm Inc
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Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to JP2020543520A priority Critical patent/JP7326302B2/ja
Priority to SG11202006720VA priority patent/SG11202006720VA/en
Priority to KR1020207023457A priority patent/KR102795043B1/ko
Priority to AU2019222773A priority patent/AU2019222773B2/en
Priority to BR112020016591-3A priority patent/BR112020016591A2/pt
Priority to CN201980013435.0A priority patent/CN111713033B/zh
Priority to EP19708004.7A priority patent/EP3753121B1/en
Publication of WO2019161112A1 publication Critical patent/WO2019161112A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • 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
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • 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
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/0013—Rate matching, e.g. puncturing or repetition of code symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • H04L1/0018—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement based on latency requirement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Definitions

  • the described techniques relate to improved methods, systems, devices, or apparatuses that support downlink transmission beam configuration techniques for wireless communications.
  • the described techniques provide for identification of beamforming parameters for a downlink transmission beam and corresponding receive beam parameters for receiving the downlink transmission beam based at least in part on a set of rules that define a priority order for control transmission and data transmissions.
  • downlink resources may be allocated to a user equipment (UE) for a downlink transmission via a first set of downlink beamforming parameters, and the UE may also be configured to monitor a control resource set using a different set of downlink beamforming parameters within a same transmission time interval (TTI) as the downlink transmission.
  • TTI transmission time interval
  • the apparatus may include means for receiving, at a UE, a downlink grant from a base station, the downlink grant indicating a first set of beamforming parameters to be used by the UE for receiving a downlink transmission via a downlink transmission beam from the base station during a first TTI, determining, based on the first set of beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI, and receiving, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters.
  • receiving at least one of the downlink transmission or the control resource set may include operations, features, means, or instructions for ignoring the downlink grant and receiving the control resource set based on the priority order.
  • the priority order may be determined based on a radio network temporary identifier (RNTI) that may be monitored by the UE.
  • RNTI radio network temporary identifier
  • the priority order may be determined based on at least one of one or more downlink resources for the downlink transmission and at least one of one or more downlink resources of the control resource set residing within a same orthogonal frequency division multiplexing (OFDM) symbol.
  • OFDM orthogonal frequency division multiplexing
  • the priority order indicates that the control resource set may have a higher priority than the downlink transmission.
  • the priority order indicates that the control resource set may have the higher priority based on a quality of service (QoS) associated with the control resource set having a higher priority than the downlink transmission, and where the QoS associated with the control resource set may be an ultra-reliable low latency communication (URLLC) QoS, and where a QoS associated with the downlink transmission may have a lower priority than the URLLC QoS.
  • QoS quality of service
  • URLLC ultra-reliable low latency communication
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that the first set of beamforming parameters or the second set of beamforming parameters may be to be used for spatial receive beam filtering.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining whether the downlink transmission may be rate-matched around the control resource set.
  • receiving at least one of the downlink transmission or the control resource set may include operations, features, means, or instructions for monitoring the control resource set using the first set of beamforming parameters, and receiving the downlink transmission using the first set of beamforming parameters.
  • receiving at least one of the downlink transmission or the control resource set may include operations, features, means, or instructions for identifying a subset of resources within the first TTI that may be configured for transmitting the control resource set, and receiving the downlink transmission during the first TTI using the subset of resources that may be configured for transmitting the control resource set.
  • the priority order may be determined based on one or more of a type of transmission associated with the control resource set, frequency division multiplexing between downlink resources for the downlink transmission and downlink resources of the control resource set, a capability of the UE to concurrently receive multiple transmission beams, or any combination thereof.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying two or more different control resource sets configured by the base station, each of the two or more different control resource sets having a different priority in the priority order.
  • a first control resource set of the two or more different control resource sets corresponds to transmissions of an ultra-reliable low latency
  • a second control resource set of the two or more different control resource sets corresponds to transmissions of an enhanced mobile broadband (eMBB) service and may have a lower priority than the downlink transmission.
  • eMBB enhanced mobile broadband
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying an aperiodic channel state information reference signal (CSI-RS) configuration within the first TTI with a third set of beamforming parameters, disregarding the aperiodic CSI-RS configuration, and receiving the downlink transmission using the first set of beamforming parameters during the first TTI.
  • CSI-RS channel state information reference signal
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a third set of beamforming parameters for monitoring a transmission beam that includes a remaining system information (RMSI) control resource set, and monitoring for the downlink transmission using the third set of beamforming parameters when a search space for the RMSI control resource set overlaps with the first TTI.
  • a set of rules defining the priority order may be statically defined at the UE.
  • a method of wireless communication may include transmitting a downlink grant to a UE, the downlink grant indicating a first set of
  • beamforming parameters to be used by the UE for receiving a downlink transmission via a downlink transmission beam during a first TTI, determining, based on the first set of beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI, and transmitting, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters.
  • the apparatus may include means for transmitting a downlink grant to a UE, the downlink grant indicating a first set of beamforming parameters to be used by the UE for receiving a downlink transmission via a downlink transmission beam during a first TTI, determining, based on the first set of beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI, and transmitting, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that the control resource set may be to be transmitted during at least a portion of the first TTI using the second set of beamforming parameters.
  • transmitting at least one of the downlink transmission or the control resource set may include operations, features, means, or instructions for skipping transmission of the downlink grant and transmitting the control resource set based on the priority order.
  • the priority order may be determined based on a radio network temporary identifier (RNTI) that may be to be monitored by the UE.
  • RNTI radio network temporary identifier
  • the priority order may be determined based on one or more of a type of transmission associated with the control resource set, frequency division multiplexing between downlink resources for the downlink transmission and resources of the control resource set, a capability of the UE to concurrently receive multiple transmission beams, or any combination thereof.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying two or more different control resource sets having a different priority in the priority order.
  • a first control resource set of the two or more different control resource sets corresponds to transmissions of an ultra-reliable low latency
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying an aperiodic CSI-RS configuration within the first TTI with a third set of beamforming parameters, disregarding the aperiodic CSI-RS configuration, and transmitting the downlink transmission using the first set of beamforming parameters during the first TTI.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a third set of beamforming parameters for a transmission beam that includes a remaining system information (RMSI) control resource set, and transmitting the downlink transmission using the third set of beamforming parameters when a search space for the RMSI control resource set overlaps with the first TTI.
  • RMSI remaining system information
  • a set of rules defining the priority order may be statically defined or may be transmitted semi-statically via radio resource control signaling.
  • FIG. 1 illustrates an example of a wireless communications system that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • FIG. 2 illustrates an example of a portion of a wireless communication system that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of beamforming parameters that support downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • FIG. 6 illustrates an example of channel state information reference signal resources that support downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • FIG. 8 illustrates an example of a process flow that supports downlink
  • Various described techniques provide for identification of beamforming parameters for a downlink transmission beam based at least in part on a set of rules that define a priority order for control resource set (CORESET) transmission and allocated downlink data transmissions.
  • a user equipment may establish a connection with a base station, which may use a high-band component either alone or in conjunction with a low-band component.
  • the high-band component may use relatively high frequency bands, such as millimeter wave (mmW) frequency bands, that use beamforming techniques for transmission and reception of directional beams.
  • mmW millimeter wave
  • Low-band component(s) may use relatively lower frequency bands, such as frequency bands below 6 GHz (which may be referred to as Sub-6 bands).
  • transmissions may be periodically transmitted by a base station, and may include control information, such as downlink control information (DCI).
  • DCI downlink control information
  • two or more CORESETs may be configured that carry different types of DCI.
  • a CORESET may include multiple resource blocks in the frequency domain, and may include n OFDM symbols in the time domain (where n is an integer).
  • the CORESET may include a total set of resources allocated for control information, and in some examples may include one or more CCEs corresponding to a particular search candidate in one or more slots of a frame.
  • a UE may receive a downlink grant that indicates downlink resources and a first set of beamforming parameters (e.g., downlink beamforming
  • a CORESET configuration where the EE may be configured to monitor a control resource set using a second, different set of beamforming parameters. For example, within a same transmission time interval (TTI), the EE may be configured to monitor one or more CORESETs and also have a downlink grant, where the monitoring of the one or more CORESETs and the downlink grant may be associated with different sets of beamforming parameters.
  • TTI transmission time interval
  • the EE may be capable of monitoring two
  • a EE may not have a capability to receive concurrent transmission beams or may not be capable of switching between different downlink transmission beams fast enough to receive both the CORESET
  • the EE and the base station may identify which set of beamforming parameters to use for the downlink transmission based on a set of rules that define a priority order.
  • the set of rules may define behavior of the base station and EE by providing, to name just a few examples, a default beam that is to be monitored by the EE and which set of beamforming parameters are to be used for spatial receive beam filtering, whether the downlink transmission is rate-matched around the CORESET, reference signal transmission behavior, search space configurations, or combinations thereof.
  • a EE may be configured with the higher layer parameter to assume whether a transmission configuration indicator (TCI) is present in downlink DCI. For example, if a parameter TCI-PresentlnDCI is set as Enabled’ for the CORESET scheduling a physical downlink shared channel (PDSCH) transmission, the EE may assume that a TCI field is present in the downlink DCI of the physical downlink control channel (PDCCH) transmitted on the CORESET.
  • TCI transmission configuration indicator
  • the EE may assume that the TCI state for the PDSCH is identical with the TCI state applied for the CORESET used for the PDCCH transmission. In such cases, if the parameter TCI- PresentinDCI is set as‘Enabled’, the EE uses the TCI-States according to the value of the TCI field in the detected PDCCH with DCI for determining PDSCH antenna port quasi co- location.
  • QCL quasi co-location
  • the EE may assume that the antenna ports of one demodulation reference signal (DM-RS) port group of PDSCH of a serving cell are quasi co-located with the reference signal(s) in the reference signal set with respect to the QCL type parameter(s) given by the indicated TCI state if the offset between the reception of the DL DCI and the corresponding PDSCH is equal to or greater than a threshold ko.
  • DM-RS demodulation reference signal
  • the UE may assume that the antenna ports of one demodulation reference signal (DMRS) port group of PDSCH of a serving cell are quasi co-located based on the TCI state used for PDCCH quasi-colocation indication of the lowest CORESET-ID in the latest slot in which one or more CORESETs are configured for the TIE.
  • DMRS demodulation reference signal
  • the defined set of rules that established a priority order for downlink transmissions may be used by the UE to determine which beam (i.e., Beam A or Beam B) is to be monitored, the information to be received on the beam, rate matching behavior, or any combination thereof.
  • the set of rules defines the priority order as a function of CORESET Type (e.g., a CORESET for an ultra-reliable low latency communication
  • one or more of the priority rules may also be a function of UE capability (e.g., an ability of the UE to receive two beams simultaneously).
  • any two channels e.g., any two PDCCH or PDSCH channels
  • Such techniques may allow a base station and a UE to transmit and receive downlink transmission beam transmissions in accordance with a priority of a service of a particular communication.
  • priority rules may thus enhance network efficiency through prioritization of different types of downlink transmissions.
  • priority rules may also provide efficient determination by base stations and UEs for which particular downlink transmissions may be monitored and resources on which the transmissions may be monitored.
  • aspects of the disclosure are initially described in the context of a wireless communications system. Various aspects of beamforming parameters and associated priority orders are then discussed. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to downlink transmission beam configuration techniques for wireless communications.
  • FIG. 1 illustrates an example of a wireless communications system 100 in accordance with various aspects of the present disclosure.
  • the wireless communications system 100 includes base stations 105, UEs 115, and a core network 130.
  • the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-A Pro LTE-A Pro
  • NR New Radio
  • wireless communications system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, or communications with low-cost and low-complexity devices.
  • ultra-reliable e.g., mission critical
  • base stations 105 and UEs 115 may use directional transmission beams, and one or more beam parameters for a downlink transmission beam within a TTI that includes a PDSCH transmission and CORESET transmission may be determined based at least in part on a set of priority rules as discussed in various examples herein.
  • Base stations 105 may wirelessly communicate with UEs 115 via one or more base station antennas.
  • Base stations 105 described herein may include or may be referred to by those skilled in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next-generation Node B or giga-nodeB (either of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or some other suitable terminology.
  • Wireless communications system 100 may include base stations 105 of different types (e.g., macro or small cell base stations).
  • the UEs 115 described herein may be able to communicate with various types of base stations 105 and network equipment including macro eNBs, small cell eNBs, gNBs, relay base stations, and the like.
  • Each base station 105 may be associated with a particular geographic coverage area 110 in which communications with various UEs 115 is supported.
  • Each base station 105 may provide communication coverage for a respective geographic coverage area 110 via communication links 125, and communication links 125 between a base station 105 and a EGE 115 may utilize one or more carriers. Communication links 125 shown in wireless
  • communications system 100 may include uplink transmissions from a EGE 115 to a base station 105, or downlink transmissions from a base station 105 to a EGE 115. Downlink transmissions may also be called forward link transmissions while uplink transmissions may also be called reverse link transmissions.
  • the term“cell” refers to a logical communication entity used for communication with a base station 105 (e.g., over a carrier), and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID)) operating via the same or a different carrier.
  • a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., machine-type communication (MTC), narrowband Internet-of-Things (NB-IoT), enhanced mobile broadband (eMBB), or others) that may provide access for different types of devices.
  • MTC machine-type communication
  • NB-IoT narrowband Internet-of-Things
  • eMBB enhanced mobile broadband
  • the term“cell” may refer to a portion of a geographic coverage area 110 (e.g., a sector) over which the logical entity operates.
  • EIEs 115 may be dispersed throughout the wireless communications system 100, and each LIE 115 may be stationary or mobile.
  • a TIE 115 may also be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the“device” may also be referred to as a unit, a station, a terminal, or a client.
  • a UE 115 may also be a personal electronic device such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer.
  • PDA personal digital assistant
  • a UE 115 may also refer to a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or an MTC device, or the like, which may be implemented in various articles such as appliances, vehicles, meters, or the like.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • MTC massive machine type communications
  • Some UEs 115 may be low cost or low complexity devices, and may provide for automated communication between machines (e.g., via
  • Wireless communications system 100 may also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band.
  • SHF region includes bands such as the 5 GHz industrial, scientific, and medical (ISM) bands, which may be used opportunistically by devices that can tolerate interference from other users.
  • ISM bands 5 GHz industrial, scientific, and medical bands
  • Wireless communications system 100 may also operate in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz), also known as the millimeter band.
  • EHF extremely high frequency
  • wireless communications system 100 may support millimeter wave (mmW) communications between UEs 115 and base stations 105, and EHF antennas of the respective devices may be even smaller and more closely spaced than UHF antennas. In some cases, this may facilitate use of antenna arrays within a UE 115.
  • mmW millimeter wave
  • the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or EIHF transmissions. Techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer transmissions, or a combination of these.
  • Duplexing in unlicensed spectrum may be based on frequency division duplexing (FDD), time division duplexing (TDD), or a combination of both.
  • FDD frequency division duplexing
  • TDD time division duplexing
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105 or a UE 115) to shape or steer an antenna beam (e.g., a transmit beam or receive beam) along a spatial path between the transmitting device and the receiving device.
  • Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference.
  • a UE 115 may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115), or transmitting a signal in a single direction (e.g., for transmitting data to a receiving device).
  • a receiving device may try multiple receive beams when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at a plurality of antenna elements of an antenna array, any of which may be referred to as“listening” according to different receive beams or receive directions.
  • a receiving device may use a single receive beam to receive along a single beam direction (e.g., when receiving a data signal).
  • the single receive beam may be aligned in a beam direction determined based at least in part on listening according to different receive beam directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio, or otherwise acceptable signal quality based at least in part on listening according to multiple beam directions).
  • carrier refers to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communications over a communication link 125.
  • a carrier of a communication link 125 may include a portion of a radio frequency spectrum band that is operated according to physical layer channels for a given radio access technology. Each physical layer channel may carry user data, control information, or other signaling.
  • a carrier may be associated with a pre-defmed frequency channel (e.g., an E-UTRA absolute radio frequency channel number (EARFCN)), and may be positioned according to a channel raster for discovery by EEs 115.
  • Carriers may be downlink or uplink (e.g., in an FDD mode), or be configured to carry downlink and uplink
  • signal waveforms transmitted over a carrier may be made up of multiple sub-carriers (e.g., using multi-carrier modulation (MCM) techniques such as OFDM or DFT-s-OFDM).
  • MCM multi-carrier modulation
  • Devices of the wireless communications system 100 e.g., base stations 105 or
  • a UE may receive a physical downlink control channel (PDCCH) and a corresponding physical downlink shared channel (PDSCH).
  • the PDCCH may be transmitted on a control resource set (CORESET) and may include transmission
  • TCI configuration indication
  • a base station 105 may allocate downlink resources to a UE 115 for a downlink transmission via a first set of beamforming parameters, and the UE 115 may also be configured to monitor a CORESET transmission using a different set of beamforming parameters (e.g., a second set of downlink beamforming parameters) within a same transmission time interval (TTI) as the downlink transmission.
  • the UE 115 and the base station 105 may identify which set of beamforming parameters to use for the downlink transmission based on a set of rules that define a priority order for the downlink transmission and CORESET transmissions.
  • FIG. 2 illustrates an example of a portion of a wireless communication system 200 that supports downlink transmission beam configuration techniques for wireless communications in accordance with various aspects of the present disclosure.
  • wireless communication system 200 may implement aspects of wireless communication system 100.
  • the wireless communication system 200 may include a base station l05-a, which may be an example of base stations 105 of FIG. 1.
  • the wireless communications system 200 may also include a EE 1 l5-a, which may be an example of EEs 115 of FIG. 1.
  • wireless communications system 200 may operate in mmW spectrum, or using NR. technologies.
  • the base station l05-a may have a geographic coverage area 205, and may establish a first connection 210 with the EE 1 l5-a in which downlink transmissions may be transmitted from base station l05-a via a transmission beam 215, which may be a high-band connection using beamformed mmW frequencies.
  • a transmission beam 215 which may be a high-band connection using beamformed mmW frequencies.
  • Uplink transmissions from the EE 1 l5-a to the base station l05-a may be via an uplink transmission beam, via one or more low-band (e.g., sub-6 GHz band) connections, or combinations thereof.
  • the base station l05-a may configure periodic CORESET transmissions that may use a first set of beamforming parameters.
  • the EE 1 l5-a is allocated with downlink resources that overlap with a CORESET transmission (e.g., within a same TTI as a CORESET transmission)
  • the EE 115-a and base station l05-a may use a defined set of rules to determine a priority order of transmission that are to be transmitted/received, and beamforming parameters associated with the transmissions.
  • An example of a downlink transmission e.g. a PSDCH transmission
  • FIG. 3 An example of a downlink transmission (e.g. a PSDCH transmission) that may have different beamforming parameters than an overlapping CORESET transmission is illustrated in FIG. 3.
  • FIG. 3 illustrates an example of beamforming parameters 300 that support downlink transmission beam configuration techniques for wireless communications in accordance with various aspects of the present disclosure.
  • beamforming parameters 300 may be used to implement aspects of wireless communication system 100 or 200.
  • a DCI 315 may be transmitted in a first TTI 305 (TTI-0 in the example of FIG. 3), and may provide information to a UE 115 for a grant for PDSCH 320 in a second TTI 310 (TTI-l in the example of FIG. 3).
  • the PDSCH 320 grant may indicate that a first set of
  • CORESET 325 may be configured such that the EE 115 may monitor downlink transmissions for the CORESET 325 using a second set of beamforming parameters 335 that are different than the first set of beamforming parameters 330.
  • the EE 115 may receive the second set of beamforming parameters 335 via semi-statically signaling, such as RRC signaling or DCI signaling. Additionally or alternatively, the EE 115 may receive the second set of beamforming parameters 335 dynamically.
  • the CORESET 325 and PDSCH 320 may be in the same TTI (e.g., TTI-l).
  • the EE 115 may use receive beamforming parameters 340 that are determined based on a set of rules that define a priority order for which beamforming parameters to use (e.g., whether to use the first set of beamforming parameters 330 or the second set of beamforming parameters 335), and which downlink transmissions to monitor.
  • receive beamforming parameters 340 that are determined based on a set of rules that define a priority order for which beamforming parameters to use (e.g., whether to use the first set of beamforming parameters 330 or the second set of beamforming parameters 335), and which downlink transmissions to monitor.
  • a set of priority rules may be defined to identify the default beam (or spatial receive filtering parameters) in a symbol to avoid conflict when a scheduled PDSCH 320 has a same or different spatial QCL in the symbol compared to a spatial QCL of the CORESET 325.
  • the priority rules may also encompass rate-matching behavior. Such priority rules may provide a priority order for QCL assumption, rate matching, or both, between CORESET 325 monitoring versus the PDSCH 320 grant.
  • the priority rules may provide that the QCL associated with PDSCH 320 QCL has a higher priority over the QCL associated with CORESET 325. Additionally or alternatively, the priority rules may define that URLLC CORESET monitoring has higher priority over PDSCH reception. In such cases, if the CORESET 325 is associated with one or more EIRLLC transmissions (or other transmissions that have a higher priority, or higher QoS than the PDSCH 320, where examples of QoS may include latency requirements, reliability requirements, etc.), the EE 115 may ignore the grant for PDSCH 320, and monitor the CORESET 325 using the second beamforming parameters 335.
  • the EE 115 may assume that the antenna ports of one DMRS port group of PDSCH 320 of a serving cell are quasi co-located with the reference signal(s) in the reference signal set with respect to the QCL type parameter(s) given by the indicated TCI state, if the offset between the reception of the downlink DCI 315 and the corresponding PDSCH 320 is equal to or greater than a threshold 345 (ko). In such cases, if the PDSCH 320 is associated with a same priority as, or higher priority than, the
  • the EE 115 may follow the PDSCH 320 grant and monitor the downlink transmission using the first set of beamforming parameters 330 and disregard the monitor CORESET 325.
  • the base station 105 may reuse the resources that were previously associated with CORESET 325, for data transmissions.
  • the priority rules may configure the EE 115 to ignore the PDSCH grant in DCI 315 if the CORESET 325 is associated with URLLC traffic.
  • the EE 115 may ignore the DCI 315 grant and use the second beamforming parameters 335 to monitor the URLLC CORESET 325, for example, by using a receive beam associated with a TCI state belonging to the lowest URLLC CORESET ID.
  • the CORESET 325 may not be monitored by the EE 115.
  • the EE 115 may monitor the CORESET 325, but with a QCL assumption and using a first set of beamforming parameters 330 from the grant associated with PDSCH 320.
  • a priority rule may be established between QCL assumptions between different signals when they conflict with each other. In one example, such as when control and data cannot be simultaneously received using the same receive Beam, or if the offset (ko) > threshold, or if data and control resources overlap/FDM in a same slot, or a combination thereof, the UE 115 may use the QCL assumption from the DCI 315 (i.e., associated with data) to receive the PDSCH 320.
  • the EE 115 may not monitor the CORESET 325 that overlaps with resources used for PDSCH 320 in the control region (i.e., CORESET 325 is not rate-matched around to receive PDSCH 320); except that when CORESET 325 is associated with a higher layer parameter (e.g., a URLLC CORESET). In such cases, the PDSCH grant may be considered invalid, and the UE 115 may monitor the CORESET 325 with its associated QCL.
  • a higher layer parameter e.g., a URLLC CORESET
  • a TRP may configure a link (e.g., a URELC link) that has a set of CORESETs with their own IDs, and the EE 115 may choose the lowest ID among the CORESETs for a configured link.
  • the priority rules may provide that the EE 115 receives PDSCH 320, associated with URELC traffic, with QCL associated with lowest URRLC CORESET ID, when ko is less than the threshold.
  • a priority order may be defined for determination of QCL parameters when unicast PDSCH and configured CORESET are frequency division multiplexed over the same OFDM symbol.
  • the EE 115 may assume that the DMRS port of PDSCH is QCL’ed with the SS/PBCH block the EE 115 selected for random access channel (RACH) association and transmission.
  • a priority rule may be defined when the EE 115 does not (or is incapable of) simultaneously receiving both PDCCH and PDSCH using the same spatial filter.
  • the UE 115 may monitor the CORESET with quasi co-location parameters associated with the configured TCI state for the CORESET.
  • the UE 115 may receive the PDSCH with its associated quasi co-location parameters. In such cases, the UE 115 may not be expected to monitor this CORESET for PDCCH. Additionally, the UE 115 may assume that no PDCCH is transmitted in the REs indicated for receiving unicast PDSCH conveyed by a PDCCH.
  • the UE 115 may not choose to receive or process the aperiodic CSI-RS.
  • the CSI-RS offset may be configured per resource set via the higher layer parameter AperiodicNZP -CSI-RS- TriggeringOjfset.
  • FIG. 4 illustrates an example of beamforming parameters 400 that support downlink transmission beam configuration techniques for wireless communications in accordance with various aspects of the present disclosure.
  • beamforming parameters 400 may be implemented in aspects of wireless communication system 100 or 200.
  • a DCI transmission 415 in a first TTI 405 (e.g., TTI-0 in the example of FIG. 4) may provide information to a UE 115 for a PDSCH 420 grant in a second TTI 410 (e.g., TTI-l in the example of FIG. 4).
  • the PDSCH 420 may start after a start of the CORESET 425, and thus, the CORESET 425 is partially FDM’ed with PDSCH 420.
  • the PDSCH 420 grant may indicate that a first set of
  • CORESET 425 may be configured such that the UE 115 may monitor for the CORESET 425 using a second set of beamforming parameters 435 that are different than the first set of beamforming parameters 430.
  • the UE 115 may use receive beamforming parameters 440 that are determined based on a set of rules that define a priority order for which beamforming parameters to use and which downlink transmissions to monitor.
  • a set of priority rules may be defined, based on which the UE 115 may monitor CORESET 425.
  • the UE 115 may also assume that the portion of the CORESET 425 that overlaps with PDSCH 420 is punctured or rate-matched around.
  • such a rule may support multiple modes of channel estimation for receiving the PDCCH.
  • the UE 115 may ignore the CORESET 425, unless the CORESET 425 is associated with a higher priority service than the PDSCH 420.
  • FIG. 5 illustrates another example of beamforming parameters 500 that support downlink transmission beam configuration techniques for wireless communications in accordance with various aspects of the present disclosure.
  • beamforming parameters 500 may be implemented in aspects of wireless communication system 100 or 200.
  • a DCI transmission 515 in a first TTI 505 (TTI-0 in the example of FIG. 5) may provide information to a UE 115 for a PDSCH 520 grant in a second TTI 510 (TTI-l in the example of FIG. 5).
  • the time difference i.e., ko 545
  • the DCI transmission 515 and the PDSCH 520 transmission may be less than the threshold.
  • the grant associated with PDSCH grant may indicate that a first set of beamforming parameters 530 are to be used for transmitting the downlink PDSCH 520 transmission.
  • CORESET 525 may be configured such that the EE 115 may monitor for the CORESET 525 using a second set of beamforming parameters 535 that are different than the first set of beamforming parameters 530. In such cases, when the CORESET 525 and PDSCH 520 are in a same TTI, the EE 115 may use receive
  • the priority rules may provide that the EE 115 receives PDSCH 320 associated with URELC traffic with a QCL associated with the lowest TTRRLC CORESET ID.
  • FIG. 6 illustrates an example of reference signal configurations 600 that support downlink transmission beam configuration techniques for wireless communications in accordance with various aspects of the present disclosure.
  • reference signal configurations 600 may be implemented in aspects of wireless communication system 100 or 200.
  • DCI 625 may include a number of DCI transmissions 640,
  • DCI transmission 650 in a first TTI 605 may provide information to a EE 115 for a PDSCH 630 grant in a second TTI 610 (TTI-l in the example of FIG. 6).
  • aperiodic CSI-RS transmissions 635 may be triggered by DCI transmission 640 in the second TTI 610.
  • the set of rules defining a priority order may also define that, when an aperiodic CSI-RS grant QCL and PDSCH QCL mismatch, and AP CSI-RS and PDSCH are FDM’ed, the EE 115 may disregard the AP CSI-RS and is not expected to measure CSI- RS. Thus, in the example of FIG. 6, the EE 115 may ignore the aperiodic CSI-RS trigger, and monitor for the PDSCH 630 using beamforming parameters indicated by the DCI transmission 650. In some cases, the base station 105 may skip transmitting the aperiodic CSI-RS transmissions 635, and reuse the associated resources for downlink transmissions.
  • FIGs. 7A and 7B illustrate examples of search spaces and beamforming parameters 700, 750 that supports downlink transmission beam configuration techniques for wireless communications in accordance with various aspects of the present disclosure.
  • search spaces and beamforming parameters 700, 750 may be implemented in aspects of wireless communication system 100 or 200.
  • a first CORESET 710 may be transmitted, using a first set of beamforming parameters, in a first symbol 705, and a second CORESET 720 may be transmitted, using a second set of beamforming parameters, in a second symbol 715.
  • the first CORESET 710 may include a grant for PDSCH 725, which may use the first set of beamforming parameters.
  • a UE 115 may switch beamforming parameters while receiving a receive beam using the first set of beamforming parameters, to the second set of beamforming parameters, and then back to the first set of beamforming parameters in order to receive the PDSCH 725.
  • the UE 115 monitors the lowest CORESET ID (CORESET 0) 710, by default, in the latest slot (i.e., for PDSCH reception).
  • the first CORESET 710 may be associated with CORESET ID 0, and may be used for monitoring remaining system information (RMSI).
  • RMSI remaining system information
  • the UE 115 may be expected to monitor the RMSI beam (i.e., by default). In such cases, the UE 115 may also monitor the second CORESET 720, leading to frequent beam switching, as shown in FIG. 7A.
  • DMRS channel estimation may involve jumping one symbol (second symbol 715), which may lead to a performance loss while extrapolating the channel across the symbol. In some cases, such a performance loss may be mitigated if the DMRS channel estimation is based on a CORESET in the latest symbol.
  • such a situation may be avoided by configuring (or defining) the UE 115 to monitor a lowest CORESET ID among CORESETs associated with a search space overlapping with latest symbol.
  • the UE 115 may monitor the first CORESET 760 in first symbol 755, may monitor the second CORESET 770 in the second symbol 765, and may use the same beamforming parameters to continue monitoring PDSCH 775.
  • the UE 115 may avoid additional switching between different transmission beams.
  • FIG. 8 illustrates an example of a process flow 800 that supports downlink transmission beam configuration techniques for wireless communications in accordance with various aspects of the present disclosure.
  • process flow 800 may be implemented in aspects of wireless communication system 100 or 200.
  • Process flow 800 may include base station l05-b, and UE 115-b, which may be examples of the corresponding devices described with reference to FIG. 1-2.
  • UE 115-b and base station l05-b may establish a connection with each other.
  • a connection establishment may be performed according to established connection establishment techniques.
  • a beam sweep procedure may be conducted, in which base station l05-b transmits a number of transmission beams in a number of different directions, and UE 115-b monitors the transmission beams and identifies a transmission beam for use in transmissions from base station l05-b to UE 115-b.
  • one or more beam refinement procedures may also be performed.
  • base station l05-b may configure CORESET transmissions. As indicated above, in some cases, a base station l05-b may configure periodic CORESET transmissions that may be used to provide DCI to UE 115-b, as well as other UEs 115. In some examples, the CORESET transmissions may be configured with certain beamforming parameters, that may be used to monitor the CORESET transmissions at UE 115-b.
  • base station l05-b may allocate downlink resources (e.g., for a PDSCH transmission) to UE 115-b.
  • the downlink resources may be configured with a first set of beamforming parameters, and be located within a first TTI.
  • base station l05-b may configure a DCI for transmission to UE 115-b.
  • the DCI may include an allocation for indicating the downlink resources allocated at 820. Further, base station l05-b may transmit the DCI 830 to UE 115-b, which may receive the DCI and determine the downlink resources and associated beamforming parameters.
  • base station l05-b may determine a priority order for the downlink transmission.
  • the priority order may be determined based on a set of rules that define the priority order.
  • the priority order may identify whether a CORESET or PDSCH is to be transmitted to UE 115-b within a same TTI.
  • the priority order may be based on a priority of a communication associated with the PDSCH and the CORESET.
  • the PDSCH transmission may be given a higher priority unless the CORESET is associated with a higher priority communication.
  • base station l05-b may configure a downlink transmission beam.
  • the downlink transmission beam may be configured using beamforming parameters that were determined based on the priority order for the downlink transmission. Further, the
  • the downlink transmission beam may be determined based on the priority order. For example, if the PDSCH transmission has higher priority than a CORESET transmission, the downlink transmission beam may be configured to transmit the PDSCH transmission, and may not transmit the CORESET. In some cases, CORESET resources may be reused for downlink PDSCH transmissions. Base station l05-b may then transmit the downlink transmission 850.
  • EE 115-b may determine the priority order, which may be performed according to the same priority order determination made at base station l05-b at 835. In some cases, at 850, base station l05-b may transmit the downlink transmission(s) to EE 115-b.
  • EE 1 l5-b may monitor the transmission beam based on the priority order. As discussed above, in some cases, the beamforming parameters used for monitoring the transmission beam at EE 115-b, as well as the information monitored may be determined according to various described priority order techniques.
  • FIG. 9 shows a block diagram 900 of a wireless device 905 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • Wireless device 905 may be an example of aspects of a EE 115 as described herein.
  • Wireless device 905 may include receiver 910, EE communications manager 915, and transmitter 920.
  • Wireless device 905 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • Receiver 910 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to downlink transmission beam configuration techniques for wireless communications, etc.). Information may be passed on to other components of the device.
  • the receiver 910 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the receiver 910 may utilize a single antenna or a set of antennas.
  • UE communications manager 915 may be an example of aspects of the UE communications manager 1215 described with reference to FIG. 12.
  • EE communications manager 915 and/or at least some of its various sub- components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions of the LIE communications manager 915 and/or at least some of its various sub- components may be executed by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • the EE communications manager 915 and/or at least some of its various sub- components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices.
  • EE communications manager 915 and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • EE communications manager 915 and/or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to an EO component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof, in accordance with various aspects of the present disclosure.
  • EE communications manager 915 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of beamforming parameters to be used by the EE for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first TTI, determine that a control resource set is to be monitored during at least a portion of the first TTI using a second set of beamforming parameters, identify a set of rules defining a priority order associated with the downlink transmission and the control resource set, and receive, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters.
  • Transmitter 920 may transmit signals generated by other components of the device.
  • the transmitter 920 may be collocated with a receiver 910 in a transceiver module.
  • the transmitter 920 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the transmitter 920 may utilize a single antenna or a set of antennas.
  • FIG. 10 shows a block diagram 1000 of a wireless device 1005 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • Wireless device 1005 may be an example of aspects of a wireless device 905 or a UE 115 as described with reference to FIG. 9.
  • Wireless device 1005 may include receiver 1010, UE communications manager 1015, and transmitter 1020. Wireless device 1005 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • Receiver 1010 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to downlink transmission beam configuration techniques for wireless communications, etc.). Information may be passed on to other components of the device.
  • the receiver 1010 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the receiver 1010 may utilize a single antenna or a set of antennas.
  • UE communications manager 1015 may be an example of aspects of the UE communications manager 1215 described with reference to FIG. 12. UE communications manager 1015 may also include beamforming component 1025, CORESET manager 1030, and receive beam manager 1035.
  • Beamforming component 1025 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first TTI.
  • beamforming component 1025 may receive one or more other sets of downlink beamforming parameters, such as a second set of downlink beamforming parameters associated with one or more CORESETs, or a third set of beamforming parameters for monitoring a transmission beam that includes a control resource set for RMSI.
  • CORESET manager 1030 may determine that a control resource set is to be monitored during at least a portion of the first TTI using a second set of beamforming parameters. In some cases, CORESET manager 1030 may identify two or more different control resource sets configured by the base station 105, where each of the two or more different control resource sets having a different priority in the priority order. In some cases, a first control resource set of the two or more different control resource sets corresponds to transmissions of an ETRLLC service, and may have a higher priority than the downlink transmission. Further, a second control resource set of the two or more different control resource sets may correspond to transmissions of an eMBB service having a lower priority than the downlink transmission.
  • Receive beam manager 1035 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set, and receive, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters, or the control resource set using the second set of beamforming parameters. In some cases, receive beam manager 1035 may receive the downlink transmission using the first set of beamforming parameters, and receive the downlink transmission during the first TTI using the subset of resources that are configured for transmitting the control resource set. In some cases, the set of rules define which of the first set of downlink beamforming parameters or the second set of downlink beamforming parameters are to be used for spatial receive beam filtering. In some cases, the set of rules define whether the downlink
  • the receiving at least one of the downlink transmission, or the control resource set includes identifying a subset of resources within the first TTI that are configured for transmitting the control resource set.
  • the set of rules defines that the priority order is based on one or more of a type of transmission associated with the control resource set, a RNTI that is monitored by the TIE, frequency division multiplexing between downlink resources for the downlink transmission and downlink resources of the control resource set, a capability of the TIE 115 to concurrently receive multiple transmission beams, or any combination thereof.
  • receive beam manager 1035 may determine, based on the first set of downlink beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI.
  • Transmitter 1020 may transmit signals generated by other components of the device.
  • the transmitter 1020 may be collocated with a receiver 1010 in a transceiver module.
  • the transmitter 1020 may be an example of aspects of the transceiver 1235 described with reference to FIG. 12.
  • the transmitter 1020 may utilize a single antenna or a set of antennas.
  • FIG. 11 shows a block diagram 1100 of a UE communications manager 1115 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the UE communications manager 1115 may be an example of aspects of a UE communications manager 915, a UE communications manager 1015, or a UE communications manager 1215 described with reference to FIGs. 9, 10, and 12.
  • the UE communications manager 1115 may include beamforming component 1120, CORESET manager 1125, receive beam manager 1130, rate-matching component 1135, QoS manager 1140, reference signal manager 1145, and priority order component 1150. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).
  • Beamforming component 1120 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of downlink beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first TTI.
  • beamforming component 1120 may receive one or more other sets of downlink beamforming parameters, such as a second set of downlink beamforming parameters associated with one or more CORESETs, or a third set of beamforming parameters for monitoring a transmission beam that includes a control resource set for RMSI.
  • CORESET manager 1125 may determine that a control resource set is to be monitored during at least a portion of the first TTI using a second set of beamforming parameters.
  • CORESET manager 1030 may identify two or more different control resource sets configured by the base station 105, each of the different control resource sets having a different priority in the priority order.
  • a first control resource set of the two or more different control resource sets corresponds to transmissions of an URELC service and has a higher priority than the downlink transmission
  • a second control resource set of the two or more different control resource sets corresponds to transmissions of an eMBB service, and has a lower priority than the downlink transmission.
  • Receive beam manager 1130 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set, and receive, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters. In some cases, receive beam manager 1130 may receive the downlink transmission using the first set of beamforming parameters, and receive the downlink transmission during the first TTI using the subset of resources that are configured for transmitting the control resource set. In some cases, the set of rules define which of the first set of downlink beamforming parameters or the second set of downlink beamforming parameters are to be used for spatial receive beam filtering. In some cases, the set of rules define whether the downlink
  • receive beam manager 1130 may determine, based on the first set of downlink beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI.
  • receiving at least one of the downlink transmission or the control resource set includes identifying a subset of resources within the first TTI that are configured for transmitting the control resource set.
  • the set of rules defines that the priority order is based on one or more of a type of transmission associated with the control resource set, a radio network temporary identifier (RNTI) that is monitored by the UE, frequency division multiplexing between downlink resources for the downlink transmission and downlink resources of the control resource set, a capability of the UE 115 to concurrently receive multiple transmission beams, or any combination thereof.
  • the priority order may be determined based on a RNTI that is monitored by the UE.
  • the priority order may be determined on at least one of one or more downlink resources for the downlink transmission and at least one of one or more downlink resources of the control resource set residing within a same OFDM symbol. In some cases, the priority order may indicate that the control resource set has a higher priority than the downlink transmission. In some cases, receiving at least one of the downlink transmission or the control resource set may include ignoring the downlink grant and receiving the control resource set based on the priority order.
  • Rate-matching component 1135 may monitor the control resource set using the first set of beamforming parameters when the downlink transmission is determined to be rate- matched around the control resource set.
  • QoS manager 1140 may identify and manage QoS aspects of transmissions.
  • the priority order indicates that a QoS associated with the control resource set has a higher priority than the downlink transmission, and the receiving at least one of the downlink transmission or the control resource set includes ignoring the downlink grant and receiving the control resource set.
  • the QoS associated with the control resource set is an URLLC QoS, and a QoS associated with the downlink transmission has a lower priority than the URLLC QoS.
  • Reference signal manager 1145 may identify an aperiodic CSI-RS configuration within the first TTI with a third set of beamforming parameters, disregard the aperiodic CSI configuration, receive the downlink transmission using the first set of beamforming parameters during the first TTI. In some cases, reference signal manager 1145 may monitor for the downlink transmission using the third set of beamforming parameters when a search space for the RMSI control resource set overlaps with the first TTI.
  • Priority order component 1150 may, in some cases, identify the priority order based on the set of rules, which may be statically defined at the UE or received semi- statically via radio resource control signaling.
  • FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • Device 1205 may be an example of or include the components of wireless device 905, wireless device 1005, or a UE 115 as described above, e.g., with reference to FIGs. 9 and 10.
  • Device 1205 may include
  • components for bi-directional voice and data communications including components for transmitting and receiving communications, including UE communications manager 1215, processor 1220, memory 1225, software 1230, transceiver 1235, antenna 1240, and I/O controller 1245. These components may be in electronic communication via one or more buses (e.g., bus 1210).
  • the UE communications manager 1015 may be implemented with any combination of processor 1220, memory 1225, software 1230, and transceiver 1235, as well as with any other of the described components, to perform the various techniques described herein.
  • Device 1205 may communicate wirelessly with one or more base stations 105.
  • Processor 1220 may include an intelligent hardware device, (e.g., a general- purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof).
  • processor 1220 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1220.
  • Processor 1220 may be configured to execute computer- readable instructions stored in a memory to perform various functions (e.g., functions or tasks supporting downlink transmission beam configuration techniques for wireless
  • Memory 1225 may include random access memory (RAM) and read only memory (ROM).
  • RAM random access memory
  • ROM read only memory
  • the memory 1225 may store computer-readable, computer-executable software 1230 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 1225 may contain, among other things, a basic input/output system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic input/output system
  • Software 1230 may include code to implement aspects of the present disclosure, including code to support downlink transmission beam configuration techniques for wireless communications.
  • Software 1230 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software 1230 may not be directly executable by the processor but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • Transceiver 1235 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1235 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1235 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 1240. However, in some cases, the device may have more than one antenna 1240, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • I/O controller 1245 may manage input and output signals for device 1205. I/O controller 1245 may also manage peripherals not integrated into device 1205. In some cases, I/O controller 1245 may represent a physical connection or port to an external peripheral. In some cases, I/O controller 1245 may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS/2®, UNIX®, LINUX®, or another known operating system. In other cases, I/O controller 1245 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, I/O controller 1245 may be implemented as part of a processor. In some cases, a user may interact with device 1205 via I/O controller 1245 or via hardware components controlled by I/O controller 1245.
  • I/O controller 1245 may be implemented as part of a processor. In some cases, a user may interact with device 1205 via I/O controller 1245 or via hardware components controlled by I/O controller 12
  • FIG. 13 shows a block diagram 1300 of a wireless device 1305 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • Wireless device 1305 may be an example of aspects of a base station 105 as described herein.
  • Wireless device 1305 may include receiver 1310, base station communications manager 1315, and transmitter 1320.
  • Wireless device 1305 may also include a processor. Each of these components may be in
  • Receiver 1310 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to downlink transmission beam configuration techniques for wireless communications, etc.). Information may be passed on to other components of the device.
  • the receiver 1310 may be an example of aspects of the transceiver 1635 described with reference to FIG. 16.
  • the receiver 1310 may utilize a single antenna or a set of antennas.
  • Base station communications manager 1315 may be an example of aspects of the base station communications manager 1615 described with reference to FIG. 16.
  • Base station communications manager 1315 and/or at least some of its various sub-components may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions of the base station communications manager 1315 and/or at least some of its various sub-components may be executed by a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • the base station communications manager 1315 and/or at least some of its various sub-components may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical devices.
  • base station communications manager 1315 and/or at least some of its various sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • base station communications manager 1315 and/or at least some of its various sub- components may be combined with one or more other hardware components, including but not limited to an I/O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • Base station communications manager 1315 may transmit a downlink grant to a UE, the downlink grant indicating a first set of beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first TTI, determine that a control resource set is to be transmitted during at least a portion of the first TTI using a second set of beamforming parameters, identify a set of rules defining a priority order associated with the downlink transmission and the control resource set, and transmit, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of
  • Transmitter 1320 may transmit signals generated by other components of the device.
  • the transmitter 1320 may be collocated with a receiver 1310 in a transceiver module.
  • the transmitter 1320 may be an example of aspects of the transceiver 1635 described with reference to FIG. 16.
  • the transmitter 1320 may utilize a single antenna or a set of antennas.
  • FIG. 14 shows a block diagram 1400 of a wireless device 1405 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • Wireless device 1405 may be an example of aspects of a wireless device 1305 or a base station 105 as described with reference to FIG. 13.
  • Wireless device 1405 may include receiver 1410, base station communications manager 1415, and transmitter 1420.
  • Wireless device 1405 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses).
  • Receiver 1410 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to downlink transmission beam configuration techniques for wireless communications, etc.). Information may be passed on to other components of the device.
  • the receiver 1410 may be an example of aspects of the transceiver 1635 described with reference to FIG. 16.
  • the receiver 1410 may utilize a single antenna or a set of antennas.
  • Base station communications manager 1415 may be an example of aspects of the base station communications manager 1615 described with reference to FIG. 16.
  • Base station communications manager 1415 may also include beamforming component 1425, CORESET manager 1430, priority order component 1435, and
  • Beamforming component 1425 may transmit a downlink grant to a UE, the downlink grant indicating a first set of beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first TTI. In some cases, beamforming component 1425 may identify a third set of beamforming parameters for a transmission beam that includes a RMSI control resource set.
  • CORESET manager 1430 may determine that a control resource set is to be transmitted during at least a portion of the first TTI using a second set of beamforming parameters. In some cases, CORESET manager 1430 may skip transmission of the control resource set based on the priority order. In some cases, CORESET manager 1430 may identify two or more different control resource sets having a different priority in the priority order. In some cases, a first control resource set of the two or more different control resource sets corresponds to transmissions of an URELC service and has a higher priority than the downlink transmission, and a second control resource set of the two or more different control resource sets corresponds to transmissions of an eMBB service and has a lower priority than the downlink transmission.
  • Priority order component 1435 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the set of rules defining the priority order indicate which of the first set of downlink beamforming parameters, or the second set of downlink beamforming parameters are to be used for spatial receive beam filtering.
  • the set of rules defining the priority order indicate whether the downlink transmission is rate-matched around the control resource set.
  • the set of rules defines that the priority order is based on one or more of a type of transmission associated with the control resource set, a RNTI that is to be monitored by the UE, frequency division multiplexing between downlink resources for the downlink transmission and resources of the control resource set, a capability of the UE 115 to concurrently receive multiple transmission beams, or any combination thereof.
  • the set of rules are statically defined or are received semi-statically via radio resource control signaling.
  • priority order component 1435 may determine, based on the first set of downlink beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI.
  • Transmission beam manager 1440 may transmit the downlink transmission using resources within the first TTI that are configured for transmitting the control resource set, transmit the downlink transmission using the third set of beamforming parameters when a search space for the RMSI control resource set overlaps with the first TTI, and transmit, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters, or the control resource set using the second set of beamforming parameters.
  • Transmitter 1420 may transmit signals generated by other components of the device.
  • the transmitter 1420 may be collocated with a receiver 1410 in a transceiver module.
  • the transmitter 1420 may be an example of aspects of the transceiver 1635 described with reference to FIG. 16.
  • the transmitter 1420 may utilize a single antenna or a set of antennas.
  • FIG. 15 shows a block diagram 1500 of a base station communications manager 1515 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the base station communications manager 1515 may be an example of aspects of a base station
  • the base station communications manager 1515 may include beamforming component 1520,
  • CORESET manager 1525 priority order component 1530, transmission beam manager 1535, rate-matching component 1540, QoS manager 1545, and reference signal manager 1550.
  • Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses).
  • Beamforming component 1520 may transmit a downlink grant to a UE, the downlink grant indicating a first set of beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first TTI. In some cases, beamforming component 1520 may identify a third set of beamforming parameters for a transmission beam that includes a RMSI control resource set. [0175] CORESET manager 1525 may determine that a control resource set is to be transmitted during at least a portion of the first TTI using a second set of beamforming parameters. In some cases, CORESET manager 1525 may skip transmission of the control resource set based on the priority order.
  • CORESET manager 1525 may identify two or more different control resource sets having a different priority in the priority order.
  • a first control resource set of the two or more different control resource sets corresponds to transmissions of an URELC service having a higher priority than the downlink transmission
  • a second control resource set of the two or more different control resource sets corresponds to transmissions of an eMBB service having a lower priority than the downlink transmission.
  • Priority order component 1530 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the set of rules defining the priority order indicate which of the first set of downlink beamforming parameters, or the second set of downlink beamforming parameters are to be used for spatial receive beam filtering.
  • the set of rules defining the priority order indicate whether the downlink transmission is to be rate-matched around the control resource set.
  • the set of rules defines that the priority order is based on one or more of a type of transmission associated with the control resource set, a RNTI that is to be monitored by the EE, frequency division multiplexing between downlink resources for the downlink transmission and resources of the control resource set, a capability of the EE 115 to concurrently receive multiple transmission beams, or any combination thereof.
  • the set of rules are statically defined. In other cases, the set of rules may be received semi-statically via radio resource control signaling.
  • priority order component 1530 may determine, based on the first set of downlink beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI. In some cases, the priority order may be determined based on a RNTI that is to be monitored by the EE. In some cases, the priority order may be determined based on at least one of one or more downlink resources for the downlink transmission and at least one of one or more downlink resources of the control resource set residing within a same OFDM symbol. In some cases, the priority order may indicate that the control resource set has a higher priority than the downlink
  • Transmission beam manager 1535 may transmit the downlink transmission using resources within the first TTI that are configured for transmitting the control resource set, transmit the downlink transmission using the third set of beamforming parameters when a search space for the RMSI control resource set overlaps with the first TTI, and transmit, based on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters.
  • transmitting at least one of the downlink transmission or the control resource set may include skipping transmission of the downlink grant and/or transmitting the control resource set based on the priority order.
  • Rate-matching component 1540 may transmit the control resource set using the first set of beamforming parameters when the downlink transmission is rate-matched around the control resource set.
  • Reference signal manager 1550 may identify an aperiodic CSI-RS configuration within the first TTI with a third set of beamforming parameters, disregard the aperiodic CSI configuration, and transmit the downlink transmission using the first set of beamforming parameters during the first TTI.
  • FIG. 16 shows a diagram of a system 1600 including a device 1605 that supports downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • Device 1605 may be an example of or include the components of base station 105 as described above, e.g., with reference to FIGs. 1 and 2.
  • Device 1605 may include components for bi-directional voice and data
  • communications including components for transmitting and receiving communications, including base station communications manager 1615, processor 1620, memory 1625, software 1630, transceiver 1635, antenna 1640, network communications manager 1645, and inter-station communications manager 1650. These components may be in electronic communication via one or more buses (e.g., bus 1610).
  • the base station communications manager 1615 may be implemented with any combination of processor 1620, memory 1625, software 1630, and transceiver 1635, as well as with any other of the described components, to perform the various techniques described herein.
  • inter-station communications manager 1650 may be implemented with any combination of processor 1620, memory 1625, software 1630, and transceiver 1635, as well as with any other of the described components, to perform the various techniques described herein.
  • Device 1605 may communicate wirelessly with one or more UEs 115.
  • Memory 1625 may include RAM and ROM.
  • the memory 1625 may store computer-readable, computer-executable software 1630 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 1625 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • Software 1630 may include code to implement aspects of the present disclosure, including code to support downlink transmission beam configuration techniques for wireless communications.
  • Software 1630 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, the software 1630 may not be directly executable by the processor but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • Transceiver 1635 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1635 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1635 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 1640. However, in some cases, the device may have more than one antenna 1640, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • Network communications manager 1645 may manage communications with the core network (e.g., via one or more wired backhaul links). For example, the network communications manager 1645 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • Inter-station communications manager 1650 may manage communications with other base station 105, and may include a controller or scheduler for controlling
  • inter-station communications manager 1650 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission.
  • inter-station communications manager 1650 may provide an X2 interface within a wireless communication network deploying Long Term Evolution (LTE)/LTE-A technology, in order to provide communication between base stations 105.
  • LTE Long Term Evolution
  • FIG. 17 shows a flowchart illustrating a method 1700 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 1700 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1700 may be performed by a UE communications manager as described with reference to FIGs. 9 through 12.
  • a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or
  • the UE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the UE 115 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of beamforming parameters to be used by the UE for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first TTI.
  • the operations of 1705 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1705 may be performed by a beamforming component as described with reference to FIGs. 9 through 12.
  • the UE 115 may determine determining, based at least in part on the first set of beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI.
  • the operations of 1710 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1710 may be performed by a CORESET manager as described with reference to FIGs. 9 through 12.
  • the EE 115 may receive, based at least in part on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters.
  • the operations of 1715 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1715 may be performed by a receive beam manager as described with reference to FIGs. 9 through 12.
  • FIG. 18 shows a flowchart illustrating a method 1800 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 1800 may be implemented by a EE 115 or its components as described herein.
  • the operations of method 1800 may be performed by a EE communications manager as described with reference to FIGs. 9 through 12.
  • a EE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or
  • the EE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the EE 115 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of downlink beamforming parameters to be used by the EE for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 1805 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1805 may be performed by a beamforming component as described with reference to FIGs. 9 through 12.
  • the EE 115 may determine that a control resource set is to be monitored during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 1810 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1810 may be performed by a CORESET manager as described with reference to FIGs. 9 through 12.
  • the EE 115 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 1815 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1815 may be performed by a receive beam manager as described with reference to FIGs. 9 through 12.
  • the set of rules define whether the downlink transmission is rate-matched around the control resource set.
  • the EE 115 may monitor the control resource set using the first set of beamforming parameters when the downlink transmission is determined to be rate-matched around the control resource set.
  • the operations of 1820 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1820 may be performed by a rate-matching component as described with reference to FIGs. 9 through 12.
  • the EE 115 may receive the downlink transmission using the first set of beamforming parameters.
  • the operations of 1825 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1825 may be performed by a receive beam manager as described with reference to FIGs. 9 through 12.
  • FIG. 19 shows a flowchart illustrating a method 1900 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 1900 may be implemented by a EE 115 or its components as described herein.
  • the operations of method 1900 may be performed by a EE communications manager as described with reference to FIGs. 9 through 12.
  • a EE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or
  • the EE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the EE 115 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of downlink beamforming parameters to be used by the EE for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 1905 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1905 may be performed by a beamforming component as described with reference to FIGs. 9 through 12.
  • the UE 115 may determine that a control resource set is to be monitored during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 1910 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1910 may be performed by a CORESET manager as described with reference to FIGs. 9 through 12.
  • the EE 115 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 1915 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1915 may be performed by a receive beam manager as described with reference to FIGs. 9 through 12.
  • the UE 115 may ignore the downlink grant and receiving the control resource set when the priority order indicates that a QoS associated with the control resource set has a higher priority than the downlink transmission.
  • the operations of 1920 may be performed according to the methods described herein. In certain examples, aspects of the operations of 1920 may be performed by a receive beam manager as described with reference to FIGs. 9 through 12.
  • FIG. 20 shows a flowchart illustrating a method 2000 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 2000 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 2000 may be performed by a UE communications manager as described with reference to FIGs. 9 through 12.
  • a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or
  • the UE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the UE 115 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of downlink beamforming parameters to be used by the UE for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 2005 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2005 may be performed by a beamforming component as described with reference to FIGs. 9 through 12.
  • the UE 115 may determine that a control resource set is to be monitored during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 2010 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2010 may be performed by a CORESET manager as described with reference to FIGs. 9 through 12.
  • the EE 115 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 2015 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2015 may be performed by a receive beam manager as described with reference to FIGs. 9 through 12.
  • the EE 115 may identify an aperiodic CSI-RS configuration within the first TTI with a third set of beamforming parameters.
  • the operations of 2020 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2020 may be performed by a reference signal manager as described with reference to FIGs. 9 through 12.
  • the EE 115 may disregard the aperiodic CSI configuration.
  • the operations of 2025 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2025 may be performed by a reference signal manager as described with reference to FIGs. 9 through 12.
  • the EE 115 may receive the downlink transmission using the first set of beamforming parameters during the first TTI.
  • the operations of 2030 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2030 may be performed by a reference signal manager as described with reference to FIGs. 9 through 12.
  • FIG. 21 shows a flowchart illustrating a method 2100 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 2100 may be implemented by a EE 115 or its components as described herein.
  • the operations of method 2100 may be performed by a EE communications manager as described with reference to FIGs. 9 through 12.
  • a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or
  • the UE 115 may perform aspects of the functions described below using special-purpose hardware.
  • the UE 115 may receive a downlink grant from a base station 105, the downlink grant indicating a first set of downlink beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam from the base station 105 during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 2105 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2105 may be performed by a beamforming component as described with reference to FIGs. 9 through 12.
  • the UE 115 may determine that a control resource set is to be monitored during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 2110 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2110 may be performed by a CORESET manager as described with reference to FIGs. 9 through 12.
  • the UE 115 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 2115 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2115 may be performed by a receive beam manager as described with reference to FIGs. 9 through 12.
  • the UE 115 may identify a third set of beamforming parameters for monitoring a transmission beam that includes a remaining system information (RMSI) control resource set.
  • the operations of 2120 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2120 may be performed by a beamforming component as described with reference to FIGs. 9 through 12.
  • FIG. 22 shows a flowchart illustrating a method 2200 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 2200 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 2200 may be performed by a base station communications manager as described with reference to FIGs. 13 through 16.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below.
  • the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may transmit a downlink grant to a user equipment (UE), the downlink grant indicating a first set of beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first transmission time interval (TTI).
  • UE user equipment
  • TTI transmission time interval
  • the operations of 2205 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2205 may be performed by a beamforming component as described with reference to FIGs. 13 through 16.
  • the base station 105 may determine, based at least in part on the first set of beamforming parameters and a second set of beamforming parameters, a priority order associated with the downlink transmission and a control resource set of the first TTI.
  • the operations of 2210 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2210 may be performed by a CORESET manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may transmit, based at least in part on the priority order, at least one of the downlink transmission using the first set of beamforming parameters or the control resource set using the second set of beamforming parameters.
  • the operations of 2215 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2215 may be performed by a transmission beam manager as described with reference to FIGs. 13 through 16.
  • FIG. 23 shows a flowchart illustrating a method 2300 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 2300 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 2300 may be performed by a base station communications manager as described with reference to FIGs. 13 through 16.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below.
  • the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may transmit a downlink grant to a UE 115, the downlink grant indicating a first set of downlink beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 2305 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2305 may be performed by a beamforming component as described with reference to FIGs. 13 through 16.
  • the base station 105 may determine that a control resource set is to be transmitted during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 2310 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2310 may be performed by a CORESET manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 2315 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2315 may be performed by a priority order component as described with reference to FIGs. 13 through 16.
  • the set of rules defining the priority order indicate whether the downlink transmission is rate-matched around the control resource set.
  • the base station 105 may transmit the control resource set using the first set of beamforming parameters when the downlink transmission is rate-matched around the control resource set.
  • the operations of 2320 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2320 may be performed by a rate-matching component as described with reference to FIGs. 13 through 16.
  • FIG. 24 shows a flowchart illustrating a method 2400 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 2400 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 2400 may be performed by a base station communications manager as described with reference to FIGs. 13 through 16.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below.
  • the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may transmit a downlink grant to a UE 115, the downlink grant indicating a first set of downlink beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 2405 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2405 may be performed by a beamforming component as described with reference to FIGs. 13 through 16.
  • the base station 105 may determine that a control resource set is to be transmitted during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 2410 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2410 may be performed by a CORESET manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 2415 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2415 may be performed by a priority order component as described with reference to FIGs. 13 through 16.
  • the base station 105 may skip transmission of the control resource set based on the priority order.
  • the operations of 2420 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2420 may be performed by a CORESET manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may transmit the downlink transmission using resources within the first TTI that are configured for transmitting the control resource set.
  • the operations of 2425 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2425 may be performed by a transmission beam manager as described with reference to FIGs. 13 through 16.
  • FIG. 25 shows a flowchart illustrating a method 2500 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 2400 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 2400 may be performed by a base station communications manager as described with reference to FIGs. 13 through 16.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may transmit a downlink grant to a UE 115, the downlink grant indicating a first set of downlink beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 2505 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2505 may be performed by a beamforming component as described with reference to FIGs. 13 through 16.
  • the base station 105 may determine that a control resource set is to be transmitted during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 2510 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2510 may be performed by a CORESET manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 2515 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2515 may be performed by a priority order component as described with reference to FIGs. 13 through 16.
  • the base station 105 may skip the downlink transmission and transmitting the control resource set when a QoS associated with the control resource set has a higher priority than the downlink transmission.
  • the operations of 2520 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2520 may be performed by a transmission beam manager as described with reference to FIGs. 13 through 16.
  • FIG. 26 shows a flowchart illustrating a method 2600 for downlink transmission beam configuration techniques for wireless communications in accordance with aspects of the present disclosure.
  • the operations of method 2600 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 2600 may be performed by a base station communications manager as described with reference to FIGs. 13 through 16.
  • a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below.
  • the base station 105 may perform aspects of the functions described below using special-purpose hardware.
  • the base station 105 may transmit a downlink grant to a UE 115, the downlink grant indicating a first set of downlink beamforming parameters to be used by the UE 115 for receiving a downlink transmission via a downlink transmission beam during a first transmission time interval (TTI).
  • TTI transmission time interval
  • the operations of 2605 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2605 may be performed by a beamforming component as described with reference to FIGs. 13 through 16.
  • the base station 105 may determine that a control resource set is to be transmitted during at least a portion of the first TTI using a second set of beamforming parameters.
  • the operations of 2610 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2610 may be performed by a CORESET manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may identify a set of rules defining a priority order associated with the downlink transmission and the control resource set.
  • the operations of 2615 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2615 may be performed by a priority order component as described with reference to FIGs. 13 through 16.
  • the base station 105 may identify an aperiodic CSI-RS configuration within the first TTI with a third set of beamforming parameters.
  • the operations of 2620 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2620 may be performed by a reference signal manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may disregard the aperiodic CSI configuration.
  • the operations of 2625 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2625 may be performed by a reference signal manager as described with reference to FIGs. 13 through 16.
  • the base station 105 may transmit the downlink transmission using the first set of beamforming parameters during the first TTI.
  • the operations of 2630 may be performed according to the methods described herein. In certain examples, aspects of the operations of 2630 may be performed by a reference signal manager as described with reference to FIGs. 13 through 16.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier frequency division multiple access
  • a CDMA system may implement a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc.
  • CDMA2000 covers IS-2000, IS-95, and IS- 856 standards.
  • IS-2000 Releases may be commonly referred to as CDMA2000 IX, IX, etc.
  • IS-856 TIA-856) is commonly referred to as CDMA2000 lxEV-DO, High Rate Packet Data (HRPD), etc.
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • a TDMA system may implement a radio technology such as Global System for Mobile
  • GSM Global Communications
  • An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc.
  • UMB Ultra Mobile Broadband
  • E-UTRA Evolved UTRA
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Wi-Fi
  • IEEE 802.16 WiMAX
  • IEEE 802.20 WiMAX
  • Flash-OFDM Flash-OFDM
  • LTE, LTE-A, LTE-A Pro, or NR While aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR applications.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 115 with service
  • a small cell may be associated with a lower- powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed, etc.) frequency bands as macro cells.
  • Small cells may include pico cells, femto cells, and micro cells according to various examples.
  • a pico cell for example, may cover a small geographic area and may allow unrestricted access by EIEs 115 with service subscriptions with the network provider.
  • a femto cell may also cover a small geographic area (e.g., a home) and may provide restricted access by EIEs 115 having an association with the femto cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 for users in the home, and the like).
  • An eNB for a macro cell may be referred to as a macro eNB.
  • An eNB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB.
  • An eNB may support one or multiple (e.g., two, three, four, and the like) cells, and may also support communications using one or multiple component carriers.
  • the wireless communications system 100 or systems described herein may support synchronous or asynchronous operation.
  • the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time.
  • the base stations 105 may have different frame timing, and transmissions from different base stations 105 may not be aligned in time.
  • the techniques described herein may be used for either synchronous or asynchronous operations.
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field- programmable gate array
  • PLD programmable logic device
  • processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that can be accessed by a general purpose or special purpose computer.
  • non-transitory computer-readable media may comprise RAM, ROM, electrically erasable programmable read only memory (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
  • Disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.
  • “or” as used in a list of items indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C).
  • the phrase“based on” shall not be construed as a reference to a closed set of conditions. For example, an exemplary step that is described as“based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure.
  • the phrase“based on” shall be construed in the same manner as the phrase “based at least in part on.”

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JP2020543520A JP7326302B2 (ja) 2018-02-16 2019-02-14 ワイヤレス通信のためのダウンリンク送信ビーム構成技法
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KR1020207023457A KR102795043B1 (ko) 2018-02-16 2019-02-14 무선 통신들에 대한 다운링크 송신 빔 구성 기술들
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BR112020016591-3A BR112020016591A2 (pt) 2018-02-16 2019-02-14 Técnicas de configuração de feixe de transmissão de enlace descendente para comunicações sem fio
CN201980013435.0A CN111713033B (zh) 2018-02-16 2019-02-14 用于无线通信的下行链路传输波束配置技术
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