WO2020062150A1 - Signaux de référence quasi co-localisés pour rapport de mesure - Google Patents

Signaux de référence quasi co-localisés pour rapport de mesure Download PDF

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Publication number
WO2020062150A1
WO2020062150A1 PCT/CN2018/108665 CN2018108665W WO2020062150A1 WO 2020062150 A1 WO2020062150 A1 WO 2020062150A1 CN 2018108665 W CN2018108665 W CN 2018108665W WO 2020062150 A1 WO2020062150 A1 WO 2020062150A1
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WIPO (PCT)
Prior art keywords
reference signals
group
measurements
csi
rss
Prior art date
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PCT/CN2018/108665
Other languages
English (en)
Inventor
Peng Cheng
Huichun LIU
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Qualcomm Incorporated
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Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2018/108665 priority Critical patent/WO2020062150A1/fr
Priority to CN201980061904.6A priority patent/CN112806048A/zh
Priority to US17/273,334 priority patent/US11910255B2/en
Priority to PCT/CN2019/108382 priority patent/WO2020063808A1/fr
Priority to EP19868125.6A priority patent/EP3857945A4/fr
Publication of WO2020062150A1 publication Critical patent/WO2020062150A1/fr

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    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • 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
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the following relates generally to wireless communications and more specifically to quasi co-located reference signals for measurement reporting.
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • DFT-S-OFDM discrete Fourier transform-spread-OFDM
  • a wireless multiple-access communications system may include a number of base stations or network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) .
  • UE user equipment
  • a UE may be configured to perform measurements on reference signals received from a source base station and one or more neighbor base stations and report the measurements to the source base station (e.g., to facilitate radio resource management (RRM) at the source base station) .
  • RRM radio resource management
  • Conventional techniques for performing measurements on reference signals and reporting the measurements to a source base station may be deficient.
  • the described techniques relate to improved methods, systems, devices, and apparatuses that support quasi co-located reference signals for measurement reporting.
  • the described techniques provide for reducing the overhead associated with performing measurements on reference signals and reporting the measurements to a source base station (e.g., to facilitate radio resource management (RRM) at the source base station) .
  • a base station may transmit a control message to a user equipment (UE) indicating a quasi co-location (QCL) configuration for measurement reporting.
  • the control message may indicate that groups of reference signals are quasi co-located for measurements reporting.
  • the UE may perform and report measurements for a subset of the groups of reference signals, or the UE may perform and report group measurements for the groups of reference signals to limit the overhead associated with performing and reporting measurements.
  • a method for wireless communication at a UE may include receiving a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, receiving the first group of reference signals and the second group of reference signals, performing measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals, and reporting measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to receive a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, receive the first group of reference signals and the second group of reference signals, perform measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals, and report measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the apparatus may include means for receiving a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, receiving the first group of reference signals and the second group of reference signals, performing measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals, and reporting measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • a non-transitory computer-readable medium storing code for wireless communication at a UE is described.
  • the code may include instructions executable by a processor to receive a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, receive the first group of reference signals and the second group of reference signals, perform measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals, and report measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving the first group of reference signals from a first serving cell and the second group of reference signals from a second serving cell, performing measurements on the first group of reference signals and reporting measurements for the first group of reference signals, where measurements for the second group of reference signals may be indicated by the reported measurements for the first group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • performing measurements on the first group of reference signals may include operations, features, means, or instructions for performing cell measurements or beam measurements on the first group of reference signals in accordance with the control message.
  • the beam measurements may be filtered by RRC configured layer3 (L3) filters.
  • the cell measurements may be filtered by RRC configured L3 filters.
  • the control message indicates a first physical cell identifier (PCI) of the first serving cell, a second PCI of the second serving cell, a bandwidth part (BWP) used to transmit the first and second groups of reference signals, measurement quantities for the measurement reporting, a type of reference signals on which to perform measurements, whether to perform and report cell measurements or beam measurements, or indexes of beams used to transmit the first and second groups of reference signals.
  • PCI physical cell identifier
  • BWP bandwidth part
  • the measurement quantities for measurement reporting include reference signal received power (RSRP) , reference signal received quality (RSRQ) , or signal-to-interference-plus-noise ratio (SINR) .
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • SINR signal-to-interference-plus-noise ratio
  • the first serving cell and the second serving cell are configured to transmit on different frequencies.
  • the first group of reference signals includes a synchronization signal block (SSB) and the second group of reference signals includes channel state information reference signals (CSI-RSs) .
  • SSB synchronization signal block
  • CSI-RSs channel state information reference signals
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for performing measurements on the SSB and reporting measurements for the SSB, where measurements for the CSI-RSs may be indicated by the reported measurements for the SSB based on the SSB being quasi co-located with the CSI-RSs.
  • the control message indicates an index of the SSB, a list of indexes of the CSI-RSs, and measurement quantities for the measurement reporting.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • performing and reporting measurements for one or more of the CSI-RSs may include operations, features, means, or instructions for identifying a CSI-RS of the CSI-RSs associated with a highest quality and transmitting an indication of the CSI-RS associated with the highest quality.
  • performing and reporting measurements for one or more of the CSI-RSs may include operations, features, means, or instructions for determining a linear average power of the CSI-RSs and transmitting an indication of the linear average power of the CSI-RSs.
  • performing and reporting measurements for one or more of the CSI-RSs may include operations, features, means, or instructions for performing and reporting measurements for each of the CSI-RSs.
  • the first group of reference signals includes a first SSB or a first set of CSI-RSs and the second group of reference signals includes a second SSB or a second set of CSI-RSs, the first group of reference signals and the second group of reference signals forming a QCL group of reference signals.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for performing group measurements on reference signals in the QCL group and reporting the group measurements for reference signals in the QCL group. 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 set of QCL groups of reference signals, receiving an indication of a subset of the QCL groups for which to perform and report measurements and performing and reporting group measurements for each QCL group of the subset of the QCL groups.
  • the control message includes an RRC message.
  • each of the first group of reference signals and the second group of reference signals includes one or more reference signals.
  • a method for wireless communication may include transmitting a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, transmitting, to the UE, the first group of reference signals, the second group of reference signals, or both, and receiving measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to transmit a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, transmit, to the UE, the first group of reference signals, the second group of reference signals, or both, and receive measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the apparatus may include means for transmitting a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, transmitting, to the UE, the first group of reference signals, the second group of reference signals, or both, and receiving measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • a non-transitory computer-readable medium storing code for wireless communication is described.
  • the code may include instructions executable by a processor to transmit a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, transmit, to the UE, the first group of reference signals, the second group of reference signals, or both, and receive measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the first group of reference signals may be transmitted by a first serving cell and the second group of reference signals may be transmitted by a second serving cell.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving measurements for the first group of reference signals and determining that measurements for the second group of reference signals may be indicated by the measurements for the first group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the control message indicates a first PCI of the first serving cell, a second PCI of the second serving cell, a BWP used to transmit the first and second groups of reference signals, measurement quantities for the measurement reporting, a type of reference signals on which to perform measurements, whether to perform and report cell measurements or beam measurements, or indexes of beams used to transmit the first and second groups of reference signals.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • the first group of reference signals includes a SSB
  • the second group of reference signals includes CSI-RSs.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving measurements for the SSB and determining that measurements for the CSI-RSs may be indicated by the measurements for the SSB based on the SSB being quasi co-located with the CSI-RSs.
  • the control message indicates an index of the SSB, a list of indexes of the CSI-RSs, and measurement quantities for the measurement reporting.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • the first group of reference signals includes a first SSB or a first set of CSI-RSs and the second group of reference signals includes a second SSB or a second set of CSI-RSs, the first group of reference signals and the second group of reference signals forming a QCL group of reference signals.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving group measurements for reference signals in the QCL group.
  • the control message includes an RRC message.
  • each of the first group of reference signals and the second group of reference signals includes one or more reference signals.
  • FIG. 1 illustrates an example of a wireless communications system that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIG. 2 illustrates an example of a measurement model for performing cell measurements and beam measurements in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of a wireless communications system that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIG. 4 illustrates an example of a process flow that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIGs. 5 and 6 show block diagrams of devices that support quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIG. 7 shows a block diagram of a communications manager that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIG. 8 shows a diagram of a system including a device that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIGs. 9 and 10 show block diagrams of devices that support quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIG. 11 shows a block diagram of a communications manager that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIG. 12 shows a diagram of a system including a device that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • FIGs. 13 and 14 show flowcharts illustrating methods that support quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • Some wireless communications systems may support communications between base stations and user equipment (UEs) on multiple beams.
  • UEs user equipment
  • RRM radio resource management
  • the overhead associated with performing both cell-level and beam-level measurements for a base station and reporting these measurements to a source base station may be high, resulting in significant power consumption at a UE.
  • the UE may be configured to perform and report measurements for multiple neighbor base stations, resulting in even greater overhead.
  • a wireless communications system may support efficient techniques for reducing the overhead associated with performing measurements on reference signals and reporting the measurements to a source base station (e.g., to facilitate RRM at the source base station) .
  • a base station may transmit a control message to a UE indicating a quasi co-location (QCL) configuration for measurement reporting.
  • the control message may indicate that groups of reference signals are quasi co-located for measurements reporting.
  • the UE may perform and report measurements for a subset of the groups of reference signals, or the UE may perform and report group measurements for the groups of reference signals to limit the overhead associated with performing and reporting measurements.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports quasi co-located reference signals for measurement reporting in accordance with 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 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 UE 115 may utilize one or more carriers. Communication links 125 shown in wireless communications system 100 may include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115. Downlink transmissions may also be called forward link transmissions while uplink transmissions may also be called reverse link transmissions.
  • the geographic coverage area 110 for a base station 105 may be divided into sectors making up only a portion of the geographic coverage area 110, and each sector may be associated with a cell.
  • each base station 105 may provide communication coverage for a macro cell, a small cell, a hot spot, or other types of cells, or various combinations thereof.
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap and overlapping geographic coverage areas 110 associated with different technologies may be supported by the same base station 105 or by different base stations 105.
  • the wireless communications system 100 may include, for example, a heterogeneous LTE/LTE-A/LTE-A Pro or NR network in which different types of base stations 105 provide coverage for various geographic coverage areas 110.
  • the term “cell” may refer 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 (PCI) , 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.
  • 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-defined 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 UEs 115.
  • E-UTRA absolute radio frequency channel number E-UTRA absolute radio frequency channel number
  • Carriers may be downlink or uplink (e.g., in an FDD mode) , or be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
  • 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
  • UEs 115 may be dispersed throughout the wireless communications system 100, and each UE 115 may be stationary or mobile.
  • a UE 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
  • Base stations 105 may communicate with the core network 130 and with one another.
  • base stations 105 may interface with the core network 130 through backhaul links 132 (e.g., via an S1, N2, N3, or other interface) .
  • Base stations 105 may communicate with one another over backhaul links 134 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations 105) or indirectly (e.g., via core network 130) .
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • the core network 130 may be an evolved packet core (EPC) , which may include at least one mobility management entity (MME) , at least one serving gateway (S-GW) , and at least one Packet Data Network (PDN) gateway (P-GW) .
  • the MME may manage non-access stratum (e.g., control plane) functions such as mobility, authentication, and bearer management for UEs 115 served by base stations 105 associated with the EPC.
  • User IP packets may be transferred through the S-GW, which itself may be connected to the P-GW.
  • the P-GW may provide IP address allocation as well as other functions.
  • the P-GW may be connected to the network operators IP services.
  • the operators IP services may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched (PS) Stream
  • At least some of the network devices may include subcomponents such as an access network entity, which may be an example of an access node controller (ANC) .
  • Each access network entity may communicate with UEs 115 through a number of other access network transmission entities, which may be referred to as a radio head, a smart radio head, or a transmission/reception point (TRP) .
  • TRP transmission/reception point
  • various functions of each access network entity or base station 105 may be distributed across various network devices (e.g., radio heads and access network controllers) or consolidated into a single network device (e.g., a base station 105) .
  • wireless communications system 100 may be a packet-based network that operate according to a layered protocol stack.
  • PDCP Packet Data Convergence Protocol
  • a Radio Link Control (RLC) layer may in some cases perform packet segmentation and reassembly to communicate over logical channels.
  • RLC Radio Link Control
  • a Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer may also use hybrid automatic repeat request (HARQ) to provide retransmission at the MAC layer to improve link efficiency.
  • HARQ hybrid automatic repeat request
  • the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or core network 130 supporting radio bearers for user plane data.
  • RRC Radio Resource Control
  • PHY Physical
  • the radio frames may be identified by a system frame number (SFN) ranging from 0 to 1023.
  • SFN system frame number
  • Each frame may include 10 subframes numbered from 0 to 9, and each subframe may have a duration of 1 ms.
  • a subframe may be further divided into 2 slots each having a duration of 0.5 ms, and each slot may contain 6 or 7 modulation symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . Excluding the cyclic prefix, each symbol period may contain 2048 sampling periods.
  • a subframe may be the smallest scheduling unit of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) .
  • TTI transmission time interval
  • a smallest scheduling unit of the wireless communications system 100 may be shorter than a subframe or may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) or in selected component carriers using sTTIs) .
  • Wireless communications system 100 may 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 ultra-high frequency (UHF) antennas. In some cases, this may facilitate the use of antenna arrays within a UE 115.
  • mmW millimeter wave
  • UHF ultra-high frequency
  • the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than super high frequency (SHF) or UHF 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.
  • base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming.
  • wireless communications system 100 may use a transmission scheme between a transmitting device (e.g., a base station 105) and a receiving device (e.g., a UE 115) , where the transmitting device is equipped with multiple antennas and the receiving devices are equipped with one or more antennas.
  • MIMO communications may employ multipath signal propagation to increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers, which may be referred to as spatial multiplexing.
  • the multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas.
  • Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams.
  • Different spatial layers may be associated with different antenna ports used for channel measurement and reporting.
  • MIMO techniques include single-user MIMO (SU-MIMO) where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) where multiple spatial layers are transmitted to multiple devices.
  • SU-MIMO single-user MIMO
  • MU-MIMO multiple-user MIMO
  • 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.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying certain amplitude and phase offsets to signals carried via each of the antenna elements associated with the device.
  • the adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
  • a base station 105 may use multiple antennas or antenna arrays to conduct beamforming operations for directional communications with a UE 115. For instance, some signals (e.g. synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a base station 105 multiple times in different directions, which may include a signal being transmitted according to different beamforming weight sets associated with different directions of transmission. Transmissions in different beam directions may be used to identify (e.g., by the base station 105 or a receiving device, such as a UE 115) a beam direction for subsequent transmission and/or reception by the base station 105. Some signals, such as data signals associated with a particular receiving device, may be transmitted by a base station 105 in a single beam direction (e.g., a direction associated with the receiving device, such as a UE 115) .
  • some signals e.g. synchronization signals, reference signals, beam selection signals, or other control signals
  • some signals may be transmitted by a base station 105 multiple times in different directions
  • the beam direction associated with transmissions along a single beam direction may be determined based at least in in part on a signal that was transmitted in different beam directions.
  • a UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions, and the UE 115 may report to the base station 105 an indication of the signal it received with a highest signal quality, or an otherwise acceptable signal quality.
  • 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) .
  • the antennas of a base station 105 or UE 115 may be located within one or more antenna arrays, which may support MIMO operations, or transmit or receive beamforming.
  • data streams may be mapped to antennas using antenna ports.
  • an antenna port may be a logical entity used to map data streams to antennas.
  • a given antenna port may drive transmissions from one or more antennas and resolve signal components received over one or more antennas.
  • Each antenna port may be associated with a reference signal (e.g., which may allow the receiver to distinguish data streams associated with the different antenna ports in a received transmission) .
  • some antenna ports may be referred to as quasi co-located, meaning that the spatial parameters associated with a transmission on one antenna port may be inferred from the spatial parameters associated with another transmission on a different antenna port.
  • reference signals e.g., transmitted on an antenna port
  • quasi co-located meaning that the spatial parameters associated with one reference signal may be inferred from the spatial parameters associated with another reference signal.
  • a base station 105 may transmit an indication of a QCL configuration to a UE 115 that may indicate the groups of antenna ports that are quasi co-located and a QCL type associated with the configuration.
  • a UE 115 may be able to determine a Doppler shift, Doppler spread, average delay, and a delay spread associated with a transmission on one set of antenna ports based on signals received on another set of antenna ports.
  • a UE 115 may be able to determine a Doppler shift and a Doppler spread associated with a transmission on one set of antenna ports based on signals received on another set of antenna ports.
  • a UE 115 may be able to determine an average delay and a Doppler shift associated with a transmission on one set of antenna ports based on signals received on another set of antenna ports.
  • a UE 115 may be able to determine spatial receive parameters associated with a transmission on one set of antenna ports based on signals received on another set of antenna ports.
  • wireless communications system 100 may support communications between base stations 105 and UEs 115 on multiple beams.
  • a UE 115 may perform and report cell measurements and beam measurements to a source base station 105 (e.g., to facilitate RRM at the source base station 105) .
  • FIG. 2 illustrates an example of a measurement model 200 for performing cell measurements 205 and beam measurements 210 in accordance with aspects of the present disclosure.
  • a UE 115 may receive reference signals on beams 215 (e.g., K beams) , and UE 115 may perform cell measurements 205 and beam measurements 210 using the reference signals received on beams 215.
  • beams 215 e.g., K beams
  • the cell measurements 205 and beam measurements 210 may include reference signal received power (RSRP) measurements, reference signal received quality (RSRQ) measurements, and signal-to-interference-plus-noise ratio (SINR) measurements. Further, the beam measurements 210 may include coarse beam measurements (e.g., using synchronization signal blocks (SSBs) ) , and finer beam measurements (e.g., using channel state information reference signals (CSI-RSs) ) .
  • SSBs synchronization signal blocks
  • CSI-RSs channel state information reference signals
  • the UE 115 may perform beam consolidation or selection based on RRC configured parameters to determine a cell quality. The UE 115 may then filter the cell quality using RRC configured layer3 (L3) filters and estimate the measurements for reporting to a source base station 105 (e.g., based on RRC configured parameters) . For beam measurements, 210, the UE 115 may filter the reference signals received on each of the beams 215 using RRC configured L3 filters, and the UE 115 may select certain beams for which to report measurements to a source base station 105 (e.g., based on RRC configured parameters) .
  • RRC configured layer3 L3
  • the source base station 105 may configure the UE 115 to avoid reporting beam measurements, to report an indication of a beam index (e.g., of a beam associated with a highest quality) , or to report an indication of a beam index and the qualities of each of the beams 215.
  • a beam index e.g., of a beam associated with a highest quality
  • the source base station 105 may receive the cell measurements 205 and/or the beam measurements 210 from the UE 115, and the source base station 105 may perform RRM using the cell measurements 205 and beam measurements 210. For instance, the source base station 105 may use the cell measurements 205 to determine a cell quality of the source base station and a cell quality of a neighbor base station, and the source base station 105 may determine whether to trigger a handover procedure to the neighbor base station (e.g., a measurement event evaluation and trigger) .
  • a handover procedure e.g., a measurement event evaluation and trigger
  • the source base station 105 may use the beam measurements to identify appropriate resources for a UE 115 to use in a random-access procedure (e.g., a contention-free random-access (CFRA) procedure) , and/or the source base station 105 may use the beam measurements to assist in a handover decision (e.g., based on the quality of individual beams as opposed to an averaged cell quality) .
  • a random-access procedure e.g., a contention-free random-access (CFRA) procedure
  • CFRA contention-free random-access
  • the overhead associated with performing both cell-level and beam-level measurements for a base station and reporting these measurements may be high, resulting in significant power consumption at a UE 115.
  • the UE 115 may be configured to perform and report measurements for multiple neighbor base stations, resulting in even greater overhead.
  • a UE 115 may receive up to 64 SSBs and 96 CSI-RSs on each carrier, and the UE 115 may be configured to perform beam measurements for one neighbor cell on each of these reference signals or on a large portion of these reference signals.
  • the maximum reporting size for one neighbor cell may be 3572 bits:
  • Wireless communications system 100 may support efficient techniques for reducing the overhead associated with performing measurements on reference signals and reporting the measurements to a source base station 105 (e.g., to facilitate RRM at the source base station 105) .
  • FIG. 3 illustrates an example of a wireless communications system 300 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • Wireless communications system 300 includes base station 105-a and base station 105-b, which may be examples of a base station 105 described with reference to FIG. 1.
  • Wireless communications system 300 also includes UE 115-a, which may be an example of a UE 115 described with reference to FIG. 1.
  • Base station 105-a may be an example of a source base station 105 and may transmit reference signals (e.g., SSBs 305 and CSI-RSs 310) which may be received by UE 115-a
  • base station 105-b may be an example of a neighbor base station 105 and may also transmit reference signals (e.g., SSBs 305 and CSI-RSs 310) which may be received by UE 115-a.
  • Wireless communications system 300 may implement aspects of wireless communications system 100. For example, wireless communications system 300 may support efficient techniques for reducing the overhead associated with performing measurements on reference signals and reporting the measurements to a source base station 105.
  • base station 105-a may transmit a QCL configuration for measurement reporting (e.g., in RRC signaling) to UE 115-a, and UE 115-a may perform and report measurements to base station 105-a based on the QCL configuration for measurement reporting.
  • the QCL configuration for measurement reporting may be associated with a QCL type (e.g., QCL type E) and may be used to indicate which groups of reference signals received by UE 115-a are quasi co-located for measurement reporting (or which antenna ports used to transmit the groups of reference signals are quasi co-located) .
  • UE 115-a may perform and report measurements for a subset of the groups of reference signals received from multiple base stations 105, or the UE 115-a may perform group measurements for the quasi co-located groups of reference signals received from multiple base stations 105. That is, the UE 115-a may be configured to skip performing and reporting redundant or similar measurements (e.g., for one or more measurement quantities, such as RSRP, RSRQ, and SINR) to base station 105-a, resulting in reduced overhead.
  • redundant or similar measurements e.g., for one or more measurement quantities, such as RSRP, RSRQ, and SINR
  • the QCL configuration for measurement reporting may indicate that groups of reference signals transmitted by base station 105-a and base station 105-b (e.g., across serving frequencies) are quasi co-located for measurement reporting.
  • the QCL configuration for measurement reporting may indicate a PCI of the source base station 105-a, a PCI of the target base station 105-b, a bandwidth part (BWP) used to transmit the reference signals, the measurement quantities (e.g., RSRP, RSRQ, or SINR) associated with the QCL configuration (i.e., which measurement quantities for reference signals received from base station 105-b can be inferred from reference signals received from base station 105-a) , a reference signal type (e.g., SSB or CSI-RS) associated with the QCL configuration (i.e., the type of reference signals that are quasi co-located) , and an indication of whether the reference signals are quasi co-located for cell measurements or beam measurements.
  • the measurement quantities e.g., RSRP, R
  • the UE 115-a may perform and report measurements based on the QCL configuration.
  • the UE 115-a may perform and report measurements for reference signals received from base station 105-a and avoid performing and reporting measurements for reference signals received from base station 105-b if antennas or antenna ports for base station 105-a and 105-b are quasi co-located (e.g., since the measurements for reference signals received from base station 105-b may be inferred from the measurements for reference signals received from base station 105-a) .
  • the UE 115-a may only perform measurements for one of the cells since measurements for other cells may be inferred from measurements for that one cell.
  • the QCL configuration for measurement reporting may also indicate the indexes of beams at the source base station 105-a and the indexes of beams at the target base station 105-b that are quasi co-located.
  • the UE 115-a may perform and report the beam measurements for reference signals transmitted by base station 105-a on beams with indexes indicated in the QCL configuration, and the UE 115-a may avoid performing and reporting beam measurements for reference signals transmitted by base station 105-b on beams with the indexes indicated in the QCL configuration for base station 105-b.
  • the QCL configuration for measurement reporting may indicate that an SSB 305 is quasi co-located with a set of CSI-RSs 310 for measurement reporting (e.g., since an SSB used to determine coarse beam measurements may overlap CSI-RSs used to determine finer beam measurements, as illustrated) .
  • the QCL configuration for measurement reporting may indicate an index of the SSB, a list of indexes for the set of CSI-RSs, and the measurement quantities (e.g., RSRP, RSRQ, or SINR) associated with the QCL configuration (i.e., which measurement quantities for the CSI-RSs 310 received from base station 105-a can be inferred from the SSB 305 received from base station 105-a) .
  • the QCL configuration may indicate that an SSB with index 1 is quasi co-located with CSI-RSs with indexes 1, 2, and 3 for RSRP reporting.
  • the UE 115-a may perform and report measurements based on the QCL configuration.
  • the UE 115-a may perform and report measurements for the indicated SSB 305 received from base station 105-a and avoid performing and reporting measurements for the indicated CSI-RSs received from base station 105-b (e.g., since the measurements for the CSI-RSs may be inferred from the measurements for the SSB) .
  • UE 115-a may be configured to additionally measure and report beam-level measurements of the CSI-RSs that are quasi co-located with the SSB, if appropriate (i.e., the QCL configuration may be overridden) .
  • UE 115-a may perform and report measurements for one or more of the CSI-RSs 310 that are quasi co-located with the SSB 305. In some examples, if UE 115-a fails to detect the SSB 305, UE 115-a may identify and report an index of the strongest CSI-RS of the CSI-RSs 310 that are quasi co-located with the SSB 305 (e.g., the CSI-RSs associated with the highest RSRQ) .
  • UE 115-a may identify and report a linear power average of the CSI-RSs 310 that are quasi co-located with the SSB 305. In yet other examples, if UE 115-a fails to detect the SSB 305, UE 115-a may perform and report measurements for each of the CSI-RSs 310 that are quasi co-located with the SSB 305 (e.g., based on the measurement quantities indicated in the QCL configuration) .
  • the QCL configuration for measurement reporting may indicate that a first SSB 305 or a first set of CSI-RSs is quasi co-located with a second SSB or a second set of CSI-RSs 310 for measurement reporting (e.g., since the beam resolution determined from measurements performed for all SSBs and CSI-RSs may be too fine) .
  • the QCL configuration for measurement reporting may indicate indexes of the SSBs, lists of indexes for the sets of CSI-RSs, and the measurement quantities (e.g., RSRP, RSRQ, or SINR) associated with the QCL configuration (i.e., which measurement quantities for one group of SSBs 305 or CSI-RSs 310 received from a base station can be inferred from another group of SSBs 305 or CSI-RSs 310 received from the base station) .
  • the UE 115-areceives the QCL configuration indicating that the groups of SSBs or CSI-RSs are quasi co-located for measurement reporting the UE 115-a may perform and report measurements based on the QCL configuration.
  • the UE 115-a may perform group measurements for all reference signals that are quasi co-located (e.g., for a QCL group of reference signals) . That is, UE 115-a may identify the SSBs and CSI-RSs that are quasi co-located (i.e., the QCL group) based on the QCL configuration, and UE 115-a may perform and report group measurements for the QCL group (e.g., using techniques similar to the techniques used to derive a cell quality based on multiple reference signals) . As an example, the UE 115-a may determine the highest quality of reference signals in the QCL group, and the UE 115-a may report the highest quality to base station 105-a.
  • group measurements for all reference signals that are quasi co-located e.g., for a QCL group of reference signals. That is, UE 115-a may identify the SSBs and CSI-RSs that are quasi co-located (i.e., the QCL group) based
  • the UE 115-a may determine a linear average of the highest qualities of the reference signals in the QCL group (e.g., the qualities above a configured threshold) , and the UE 115-a may report the linear average to base station 105-a.
  • base station 105-a may configure UE 115-a to perform and report measurements for all or a subset of the QCL groups (e.g., via RRC signaling, MAC control element (MAC-CE) signaling, or downlink control information (DCI) signaling) .
  • UE 115-a may be configured to additionally measure and report beam-level measurements for each SSB or CSI-RS in a QCL group, if appropriate (e.g., the QCL configuration may be overridden) .
  • FIG. 4 illustrates an example of a process flow 400 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • Process flow 400 illustrates aspects of techniques performed by a base station 105-c and a base station 105-d, which may be examples of a base station 105 described with reference to FIGs. 1-3.
  • Process flow 400 also illustrates aspects of techniques performed by a UE 115-b, which may be an example of a UE 115 described with reference to FIGs. 1-3.
  • base station 105-c may transmit a control message (e.g., an RRC message) indicating a QCL configuration for measurement reporting.
  • the control message may indicate which groups of reference signals to be transmitted to UE 115-b are quasi co-located (or which antenna ports used to transmit the reference signals are quasi co-located) .
  • base station 105-c may then transmit one or more groups of reference signals to UE 115-b, and, at 415, base station 105-c may transmit one or more groups of reference signals to UE 115-b.
  • UE 115-b may receive the groups of reference signals from base station 105-c and/or base station 105-d, and, at 420, UE 115-b may perform measurements on the reference signals based on the QCL configuration. At 425, UE 115-b may then report the measurements to base station 105-c.
  • UE 115-c may receive a first group of reference signals and a second group of reference signals, and the control message may indicate that the first group of reference signals is quasi co-located with the second group of reference signals for measurement reporting.
  • UE 115-c may use the techniques described herein to perform and report measurements for either the first group of measurements or the second group of measurements, or to perform and report group measurements for the first and second groups of measurements, such that the overhead associated with performing and reporting measurements may be reduced.
  • UE 115-b may receive the first group of reference signals from base station 105-c and the second group of reference signals from base station 105-d, and UE 115-c may perform and report measurements (e.g., cell or beam measurements) for the first group of reference signals (e.g., where measurements for the second group of reference signals may be indicated by the measurements for the first group of measurements) .
  • the first group of reference signals may include an SSB (e.g., received from base station 105-c)
  • the second group of reference signals may include a set of CSI-RSs (e.g., also received from base station 105-c) .
  • UE 115-b may perform and report measurements for the SSB (e.g., where measurements for the CSI-RSs may be indicated by the measurements for the SSB) .
  • the first group of reference signals may include a first SSB or a first set of CSI-RSs and the second group of reference signals may include a second SSB or a second set of CSI-RSs, and the first and second groups of reference signals may form a QCL group of reference signals.
  • UE 115-b may perform and report group measurements for reference signals in the QCL group.
  • Example 1 is a method for wireless communication at a UE that includes receiving a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, receiving the first group of reference signals and the second group of reference signals, performing measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals, and reporting measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the method of example 1 includes receiving the first group of reference signals from a first serving cell and the second group of reference signals from a second serving cell, performing measurements on the first group of reference signals and reporting measurements for the first group of reference signals, where measurements for the second group of reference signals may be indicated by the reported measurements for the first group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the method of any of examples 1-2 includes performing cell measurements or beam measurements on the first group of reference signals in accordance with the control message.
  • the beam measurements may be filtered by RRC configured layer3 (L3) filters.
  • the cell measurements may be filtered by RRC configured L3 filters.
  • the control message indicates a first PCI of the first serving cell, a second PCI of the second serving cell, a BWP used to transmit the first and second groups of reference signals, measurement quantities for the measurement reporting, a type of reference signals on which to perform measurements, whether to perform and report cell measurements or beam measurements, or indexes of beams used to transmit the first and second groups of reference signals.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, SINR.
  • the first serving cell and the second serving cell are configured to transmit on different frequencies.
  • the first group of reference signals includes an SSB and the second group of reference signals includes CSI-RSs.
  • the method of any of examples 1-9 includes performing measurements on the SSB and reporting measurements for the SSB, where measurements for the CSI-RSs may be indicated by the reported measurements for the SSB based on the SSB being quasi co-located with the CSI-RSs.
  • the control message indicates an index of the SSB, a list of indexes of the CSI-RSs, and measurement quantities for the measurement reporting.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • the method of any of examples 1-12 includes failing to detect the SSB and performing and reporting measurements for one or more of the CSI-RSs.
  • the method of any of examples 1-13 includes identifying a CSI-RS of the CSI-RSs associated with a highest quality and transmitting an indication of the CSI-RS associated with the highest quality.
  • the method of any of examples 1-14 includes determining a linear average power of the CSI-RSs and transmitting an indication of the linear average power of the CSI-RSs.
  • the method of any of examples 1-15 includes performing and reporting measurements for each of the CSI-RSs.
  • the first group of reference signals includes a first SSB or a first set of CSI-RSs and the second group of reference signals includes a second SSB or a second set of CSI-RSs, the first group of reference signals and the second group of reference signals forming a QCL group of reference signals.
  • the method of any of examples 1-17 includes performing group measurements on reference signals in the QCL group and reporting the group measurements for reference signals in the QCL group.
  • the method of any of examples 1-18 includes identifying a set of QCL groups of reference signals, receiving an indication of a subset of the QCL groups for which to perform and report measurements and performing and reporting group measurements for each QCL group of the subset of the QCL groups.
  • the control message includes an RRC message.
  • each of the first group of reference signals and the second group of reference signals includes one or more reference signals.
  • Example 22 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of examples 1-21.
  • Example 23 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement a method as in any of examples 1-21.
  • Example 24 is a system including one or more processors and memory in electronic communication with the one or more processors storing instructions executable by the one or more processors to cause the system or apparatus to implement a method as in any of examples 1-21. Aspects of these examples may be combined with aspects or embodiments disclosed in other implementations.
  • Example 25 is a method for wireless communication that includes transmitting a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, transmitting, to the UE, the first group of reference signals, the second group of reference signals, or both, and receiving measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the first group of reference signals may be transmitted by a first serving cell and the second group of reference signals may be transmitted by a second serving cell.
  • the method of any of examples 25-26 includes receiving measurements for the first group of reference signals and determining that measurements for the second group of reference signals may be indicated by the measurements for the first group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the control message indicates a first PCI of the first serving cell, a second PCI of the second serving cell, a BWP used to transmit the first and second groups of reference signals, measurement quantities for the measurement reporting, a type of reference signals on which to perform measurements, whether to perform and report cell measurements or beam measurements, or indexes of beams used to transmit the first and second groups of reference signals.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • the first group of reference signals includes an SSB
  • the second group of reference signals includes CSI-RSs.
  • the method of any of examples 25-30 includes receiving measurements for the SSB and determining that measurements for the CSI-RSs may be indicated by the measurements for the SSB based on the SSB being quasi co-located with the CSI-RSs.
  • the control message indicates an index of the SSB, a list of indexes of the CSI-RSs, and measurement quantities for the measurement reporting.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • the first group of reference signals includes a first SSB or a first set of CSI-RSs and the second group of reference signals includes a second SSB or a second set of CSI-RSs, the first group of reference signals and the second group of reference signals forming a QCL group of reference signals.
  • the method of any of examples 25-34 includes receiving group measurements for reference signals in the QCL group.
  • the control message includes an RRC message.
  • each of the first group of reference signals and the second group of reference signals includes one or more reference signals.
  • Example 38 is a system or apparatus including means for implementing a method or realizing an apparatus as in any of examples 25-37.
  • Example 39 is a non-transitory computer-readable medium storing instructions executable by one or more processors to cause the one or more processors to implement a method as in any of examples 25-37.
  • Example 40 is a system including one or more processors and memory in electronic communication with the one or more processors storing instructions executable by the one or more processors to cause the system or apparatus to implement a method as in any of examples 25-37. Aspects of these examples may be combined with aspects or embodiments disclosed in other implementations.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the device 505 may be an example of aspects of a UE 115 as described herein.
  • the device 505 may include a receiver 510, a communications manager 515, and a transmitter 520.
  • the device 505 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 510 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 quasi co-located reference signals for measurement reporting, etc. ) . Information may be passed on to other components of the device 505.
  • the receiver 510 may be an example of aspects of the transceiver 820 described with reference to FIG. 8.
  • the receiver 510 may utilize a single antenna or a set of antennas.
  • the communications manager 515 may receive a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, receive the first group of reference signals and the second group of reference signals, perform measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals, and report measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the communications manager 515 may be an example of aspects of the communications manager 810 described herein.
  • the communications manager 515 may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 515, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a 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.
  • code e.g., software or firmware
  • ASIC application-specific integrated circuit
  • the communications manager 515 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 components.
  • the communications manager 515, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 515, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (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.
  • I/O input/output
  • the transmitter 520 may transmit signals generated by other components of the device 505.
  • the transmitter 520 may be collocated with a receiver 510 in a transceiver module.
  • the transmitter 520 may be an example of aspects of the transceiver 820 described with reference to FIG. 8.
  • the transmitter 520 may utilize a single antenna or a set of antennas.
  • FIG. 6 shows a block diagram 600 of a device 605 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the device 605 may be an example of aspects of a device 505, or a UE 115 as described herein.
  • the device 605 may include a receiver 610, a communications manager 615, and a transmitter 640.
  • the device 605 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 610 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 quasi co-located reference signals for measurement reporting, etc. ) . Information may be passed on to other components of the device 605.
  • the receiver 610 may be an example of aspects of the transceiver 820 described with reference to FIG. 8.
  • the receiver 610 may utilize a single antenna or a set of antennas.
  • the communications manager 615 may be an example of aspects of the communications manager 515 as described herein.
  • the communications manager 615 may include a QCL manager 620, a reference signal manager 625, a measurement component 630, and a measurement report manager 635.
  • the communications manager 615 may be an example of aspects of the communications manager 810 described herein.
  • the QCL manager 620 may receive a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting.
  • the reference signal manager 625 may receive the first group of reference signals and the second group of reference signals.
  • the measurement component 630 may perform measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the measurement report manager 635 may report measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the transmitter 640 may transmit signals generated by other components of the device 605.
  • the transmitter 640 may be collocated with a receiver 610 in a transceiver module.
  • the transmitter 640 may be an example of aspects of the transceiver 820 described with reference to FIG. 8.
  • the transmitter 640 may utilize a single antenna or a set of antennas.
  • FIG. 7 shows a block diagram 700 of a communications manager 705 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the communications manager 705 may be an example of aspects of a communications manager 515, a communications manager 615, or a communications manager 810 described herein.
  • the communications manager 705 may include a QCL manager 710, a reference signal manager 715, a measurement component 720, and a measurement report manager 725. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the QCL manager 710 may receive a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting. In some examples, the QCL manager 710 may identify a set of QCL groups of reference signals. In some examples, the QCL manager 710 may receive an indication of a subset of the QCL groups for which to perform and report measurements. In some cases, the control message indicates a first PCI of the first serving cell, a second PCI of the second serving cell, a BWP used to transmit the first and second groups of reference signals, measurement quantities for the measurement reporting, a type of reference signals on which to perform measurements, whether to perform and report cell measurements or beam measurements, or indexes of beams used to transmit the first and second groups of reference signals. In some cases, the first serving cell and the second serving cell are configured to transmit on different frequencies.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • the control message indicates an index of the SSB, a list of indexes of the CSI-RSs, and measurement quantities for the measurement reporting.
  • the control message includes an RRC message.
  • the reference signal manager 715 may receive the first group of reference signals and the second group of reference signals. In some examples, the reference signal manager 715 may receive the first group of reference signals from a first serving cell and the second group of reference signals from a second serving cell. In some cases, the first group of reference signals includes a SSB and the second group of reference signals includes CSI-RSs.
  • the first group of reference signals includes a first SSB or a first set of CSI-RSs and the second group of reference signals includes a second SSB or a second set of CSI-RSs, the first group of reference signals and the second group of reference signals forming a QCL group of reference signals.
  • each of the first group of reference signals and the second group of reference signals includes one or more reference signals.
  • the measurement component 720 may perform measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals. In some examples, the measurement component 720 may perform measurements on the first group of reference signals.
  • the measurement component 720 may perform cell measurements or beam measurements on the first group of reference signals in accordance with the control message. In some examples, the measurement component 720 may perform measurements on the SSB. In some examples, the measurement component 720 may fail to detect the SSB. In some examples, the measurement component 720 may identify a CSI-RS of the CSI-RSs associated with a highest quality. In some examples, the measurement component 720 may determine a linear average power of the CSI-RSs. In some examples, the measurement component 720 may perform group measurements on reference signals in the QCL group. In some cases, the beam measurements are filtered by RRC configured L3 filters. In some cases, the cell measurements are filtered by RRC configured L3 filters.
  • the measurement report manager 725 may report measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals. In some examples, the measurement report manager 725 may report measurements for the first group of reference signals, where measurements for the second group of reference signals are indicated by the reported measurements for the first group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the measurement report manager 725 may report measurements for the SSB, where measurements for the CSI-RSs are indicated by the reported measurements for the SSB based on the SSB being quasi co-located with the CSI-RSs.
  • the measurement component 720 may perform measurements for one or more of the CSI-RSs, and the measurement report manager 725 may report the measurements for the one or more of the CSI-RSs.
  • the measurement report manager 725 may transmit an indication of the CSI-RS associated with the highest quality.
  • the measurement report manager 725 may transmit an indication of the linear average power of the CSI-RSs.
  • the measurement component 720 may perform measurements for each of the CSI-RSs, and the measurement report manager 725 may report the measurements for each of the CSI-RSs. In some examples, the measurement report manager 725 may report the group measurements for reference signals in the QCL group. In some examples, the measurement component 720 may perform measurements for each QCL group of the subset of the QCL groups, and the measurement report manager 725 may report the group measurements for each QCL group of the subset of the QCL groups.
  • FIG. 8 shows a diagram of a system 800 including a device 805 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the device 805 may be an example of or include the components of device 505, device 605, or a UE 115 as described herein.
  • the device 805 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 810, an I/O controller 815, a transceiver 820, an antenna 825, memory 830, and a processor 840. These components may be in electronic communication via one or more buses (e.g., bus 845) .
  • buses e.g., bus 845
  • the communications manager 810 may receive a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, receive the first group of reference signals and the second group of reference signals, perform measurements on the first group of reference signals, or the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals, and report measurements on the first group of reference signals, or measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the I/O controller 815 may manage input and output signals for the device 805.
  • the I/O controller 815 may also manage peripherals not integrated into the device 805.
  • the I/O controller 815 may represent a physical connection or port to an external peripheral.
  • the I/O controller 815 may utilize an operating system such as MS- MS- OS/ or another known operating system.
  • the I/O controller 815 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 815 may be implemented as part of a processor.
  • a user may interact with the device 805 via the I/O controller 815 or via hardware components controlled by the I/O controller 815.
  • the transceiver 820 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 820 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 820 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 825. However, in some cases the device may have more than one antenna 825, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 830 may include RAM and ROM.
  • the memory 830 may store computer-readable, computer-executable code 835 including instructions that, when executed, cause the processor to perform various functions described herein.
  • the memory 830 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 840 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) .
  • the processor 840 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 840.
  • the processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting quasi co-located reference signals for measurement reporting) .
  • the code 835 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 835 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory.
  • the code 835 may not be directly executable by the processor 840 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 9 shows a block diagram 900 of a device 905 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the device 905 may be an example of aspects of a base station 105 as described herein.
  • the device 905 may include a receiver 910, a communications manager 915, and a transmitter 920.
  • the 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) .
  • the 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 quasi co-located reference signals for measurement reporting, etc. ) . Information may be passed on to other components of the device 905.
  • the receiver 910 may be an example of aspects of the transceiver 1220 described with reference to FIG. 12.
  • the receiver 910 may utilize a single antenna or a set of antennas.
  • the communications manager 915 may transmit a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, transmit, to the UE, the first group of reference signals, the second group of reference signals, or both, and receive measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the communications manager 915 may be an example of aspects of the communications manager 1210 described herein.
  • the communications manager 915 may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 915, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a 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.
  • code e.g., software or firmware
  • ASIC application-specific integrated circuit
  • the communications manager 915 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 components.
  • the communications manager 915, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 915, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (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.
  • I/O input/output
  • the transmitter 920 may transmit signals generated by other components of the device 905.
  • 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 1220 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 device 1005 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the device 1005 may be an example of aspects of a device 905, or a base station 105 as described herein.
  • the device 1005 may include a receiver 1010, a communications manager 1015, and a transmitter 1035.
  • the 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) .
  • the 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 quasi co-located reference signals for measurement reporting, etc. ) . Information may be passed on to other components of the device 1005.
  • the receiver 1010 may be an example of aspects of the transceiver 1220 described with reference to FIG. 12.
  • the receiver 1010 may utilize a single antenna or a set of antennas.
  • the communications manager 1015 may be an example of aspects of the communications manager 915 as described herein.
  • the communications manager 1015 may include a QCL manager 1020, a reference signal manager 1025, and a measurement report manager 1030.
  • the communications manager 1015 may be an example of aspects of the communications manager 1210 described herein.
  • the QCL manager 1020 may transmit a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting.
  • the reference signal manager 1025 may transmit, to the UE, the first group of reference signals, the second group of reference signals, or both.
  • the measurement report manager 1030 may receive measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the transmitter 1035 may transmit signals generated by other components of the device 1005.
  • the transmitter 1035 may be collocated with a receiver 1010 in a transceiver module.
  • the transmitter 1035 may be an example of aspects of the transceiver 1220 described with reference to FIG. 12.
  • the transmitter 1035 may utilize a single antenna or a set of antennas.
  • FIG. 11 shows a block diagram 1100 of a communications manager 1105 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the communications manager 1105 may be an example of aspects of a communications manager 915, a communications manager 1015, or a communications manager 1210 described herein.
  • the communications manager 1105 may include a QCL manager 1110, a reference signal manager 1115, a measurement report manager 1120, and a measurement component 1125. Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the QCL manager 1110 may transmit a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting.
  • the control message indicates a first physical cell identifier (PCI) of the first serving cell, a second PCI of the second serving cell, a bandwidth part (BWP) used to transmit the first and second groups of reference signals, measurement quantities for the measurement reporting, a type of reference signals on which to perform measurements, whether to perform and report cell measurements or beam measurements, or indexes of beams used to transmit the first and second groups of reference signals.
  • the measurement quantities for measurement reporting include RSRP, RSRQ, or SINR.
  • the control message indicates an index of the SSB, a list of indexes of the CSI-RSs, and measurement quantities for the measurement reporting.
  • the control message includes a RRC message.
  • the reference signal manager 1115 may transmit, to the UE, the first group of reference signals, the second group of reference signals, or both.
  • the first group of reference signals is transmitted by a first serving cell and the second group of reference signals is transmitted by a second serving cell.
  • the first group of reference signals includes a SSB
  • the second group of reference signals includes CSI-RSs.
  • the first group of reference signals includes a first SSB or a first set of CSI-RSs and the second group of reference signals includes a second SSB or a second set of CSI-RSs, the first group of reference signals and the second group of reference signals forming a QCL group of reference signals.
  • each of the first group of reference signals and the second group of reference signals includes one or more reference signals.
  • the measurement report manager 1120 may receive measurements for the first group of reference signals, or measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals. In some examples, the measurement report manager 1120 may receive measurements for the first group of reference signals. In some examples, the measurement report manager 1120 may receive measurements for the SSB. In some examples, the measurement report manager 1120 may receive group measurements for reference signals in the QCL group.
  • the measurement component 1125 may determine that measurements for the second group of reference signals are indicated by the measurements for the first group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals. In some examples, the measurement component 1125 may determine that measurements for the CSI-RSs are indicated by the measurements for the SSB based on the SSB being quasi co-located with the CSI-RSs.
  • FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the device 1205 may be an example of or include the components of device 905, device 1005, or a base station 105 as described herein.
  • the device 1205 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 1210, a network communications manager 1215, a transceiver 1220, an antenna 1225, memory 1230, a processor 1240, and an inter-station communications manager 1245. These components may be in electronic communication via one or more buses (e.g., bus 1250) .
  • buses e.g., bus 1250
  • the communications manager 1210 may transmit a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting, transmit, to the UE, the first group of reference signals, the second group of reference signals, or both, and receive measurements for the first group of reference signals, measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the network communications manager 1215 may manage communications with the core network (e.g., via one or more wired backhaul links) .
  • the network communications manager 1215 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • the transceiver 1220 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1220 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1220 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 1225. However, in some cases the device may have more than one antenna 1225, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 1230 may include RAM, ROM, or a combination thereof.
  • the memory 1230 may store computer-readable code 1235 including instructions that, when executed by a processor (e.g., the processor 1240) cause the device to perform various functions described herein.
  • a processor e.g., the processor 1240
  • the memory 1230 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 1240 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) .
  • the processor 1240 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into processor 1240.
  • the processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1230) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting quasi co-located reference signals for measurement reporting) .
  • the inter-station communications manager 1245 may manage communications with other base station 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other base stations 105. For example, the inter-station communications manager 1245 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communications manager 1245 may provide an X2 interface within an LTE/LTE-Awireless communication network technology to provide communication between base stations 105.
  • the code 1235 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 1235 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1235 may not be directly executable by the processor 1240 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 13 shows a flowchart illustrating a method 1300 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the operations of method 1300 may be implemented by a UE 115 or its components as described herein.
  • the operations of method 1300 may be performed by a communications manager as described with reference to FIGs. 5 through 8.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, a UE may perform aspects of the functions described below using special-purpose hardware.
  • the UE may receive a control message indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting.
  • the operations of 1305 may be performed according to the methods described herein. In some examples, aspects of the operations of 1305 may be performed by a QCL manager as described with reference to FIGs. 5 through 8.
  • the UE may receive the first group of reference signals and the second group of reference signals.
  • the operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be performed by a reference signal manager as described with reference to FIGs. 5 through 8.
  • the UE may perform measurements on the first group of reference signals, the second group of reference signals, or both based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of 1315 may be performed by a measurement component as described with reference to FIGs. 5 through 8.
  • the UE may report measurements on the first group of reference signals, measurements on the second group of reference signals, or group measurements on the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the operations of 1320 may be performed according to the methods described herein. In some examples, aspects of the operations of 1320 may be performed by a measurement report manager as described with reference to FIGs. 5 through 8.
  • FIG. 14 shows a flowchart illustrating a method 1400 that supports quasi co-located reference signals for measurement reporting in accordance with aspects of the present disclosure.
  • the operations of method 1400 may be implemented by a base station 105 or its components as described herein.
  • the operations of method 1400 may be performed by a communications manager as described with reference to FIGs. 9 through 12.
  • a base station may execute a set of instructions to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, a base station may perform aspects of the functions described below using special-purpose hardware.
  • the base station may transmit a control message, to a UE, indicating that a first group of reference signals is quasi co-located with a second group of reference signals for measurement reporting.
  • the operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed by a QCL manager as described with reference to FIGs. 9 through 12.
  • the base station may transmit, to the UE, the first group of reference signals, the second group of reference signals, or both.
  • the operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed by a reference signal manager as described with reference to FIGs. 9 through 12.
  • the base station may receive measurements for the first group of reference signals, measurements on the second group of reference signals, or group measurements for the first group of reference signals and the second group of reference signals based on the first group of reference signals being quasi co-located with the second group of reference signals.
  • the operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be performed by a measurement report manager as described with reference to FIGs. 9 through 12.
  • 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 1X, 1X, etc.
  • IS-856 TIA-856) is commonly referred to as CDMA2000 1xEV-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 System for Mobile 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 Institute of Electrical and Electronics Engineers
  • IEEE 802.16 WiMAX
  • IEEE 802.20 Flash-OFDM
  • UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS) .
  • LTE, LTE-A, and LTE-A Pro are releases of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR, and GSM are described in documents from the organization named “3rd Generation Partnership Project” (3GP
  • CDMA2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • 3GPP2 3rd Generation Partnership Project 2
  • the techniques described herein may be used for the systems and radio technologies mentioned herein as well as other systems and radio technologies. 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 subscriptions with the network provider.
  • 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 UEs 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 UEs 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 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
  • a general-purpose processor may be a microprocessor, but in the alternative, the 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 herein 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 include random-access memory (RAM) , read-only memory (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.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read only memory
  • CD compact disk
  • magnetic disk storage or other magnetic storage devices or any other non-transitory medium
  • 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.

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

Abstract

L'invention concerne des procédés, des systèmes et des dispositifs pour les communications sans fil. De manière générale, les techniques décrites permettent de réduire le surdébit associé à la réalisation de mesures de faisceau ou de cellule sur des signaux de référence et de rapporter les mesures à une station de base de desserte (par exemple, pour faciliter la gestion de ressources radio (RRM) au niveau de la station de base source). Selon l'invention, une station de base peut transmettre un message de commande à un équipement utilisateur (UE) indiquant une configuration de quasi-co-localisation (QCL) pour un rapport de mesure. En particulier, le message de commande peut indiquer que des groupes de signaux de référence sont quasi colocalisés pour un rapport de mesures. En conséquence, l'UE peut effectuer et rapporter des mesures pour un sous-ensemble des groupes de signaux de référence, ou l'UE peut effectuer et rapporter des mesures de groupe pour les groupes quasi co-localisés de signaux de référence afin de limiter le surdébit associé à la réalisation et au rapport de mesures.
PCT/CN2018/108665 2018-09-29 2018-09-29 Signaux de référence quasi co-localisés pour rapport de mesure WO2020062150A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/CN2018/108665 WO2020062150A1 (fr) 2018-09-29 2018-09-29 Signaux de référence quasi co-localisés pour rapport de mesure
CN201980061904.6A CN112806048A (zh) 2018-09-29 2019-09-27 针对小区子集的波束测量
US17/273,334 US11910255B2 (en) 2018-09-29 2019-09-27 Beam measurement for a cell subset
PCT/CN2019/108382 WO2020063808A1 (fr) 2018-09-29 2019-09-27 Mesure de faisceau relative à un sous-ensemble de cellules
EP19868125.6A EP3857945A4 (fr) 2018-09-29 2019-09-27 Mesure de faisceau relative à un sous-ensemble de cellules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/108665 WO2020062150A1 (fr) 2018-09-29 2018-09-29 Signaux de référence quasi co-localisés pour rapport de mesure

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WO2020062150A1 true WO2020062150A1 (fr) 2020-04-02

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WO2021224884A1 (fr) * 2020-05-07 2021-11-11 Lenovo (Singapore) Pte. Ltd. Génération d'un rapport de mesure à partir de signaux de référence de positionnement
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WO2023040902A1 (fr) * 2021-09-14 2023-03-23 中国移动通信有限公司研究院 Procédé et appareil de transmission d'informations, dispositif côté réseau et terminal

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113517914A (zh) * 2020-04-10 2021-10-19 华为技术有限公司 一种波束训练方法及装置
CN113517914B (zh) * 2020-04-10 2023-10-20 华为技术有限公司 一种波束训练方法及装置
US11990977B1 (en) 2020-04-10 2024-05-21 Huawei Technologies Co., Ltd. Beam training method and apparatus
WO2021224884A1 (fr) * 2020-05-07 2021-11-11 Lenovo (Singapore) Pte. Ltd. Génération d'un rapport de mesure à partir de signaux de référence de positionnement
CN111989867A (zh) * 2020-07-14 2020-11-24 北京小米移动软件有限公司 信息传输方法、装置、通信设备和存储介质
WO2022063145A1 (fr) * 2020-09-25 2022-03-31 上海朗帛通信技术有限公司 Procédé et dispositif utilisés dans un nœud pour une communication sans fil
WO2023040902A1 (fr) * 2021-09-14 2023-03-23 中国移动通信有限公司研究院 Procédé et appareil de transmission d'informations, dispositif côté réseau et terminal

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