WO2023197094A1 - Sélection de faisceaux pour signaux de référence apériodiques - Google Patents

Sélection de faisceaux pour signaux de référence apériodiques Download PDF

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Publication number
WO2023197094A1
WO2023197094A1 PCT/CN2022/086017 CN2022086017W WO2023197094A1 WO 2023197094 A1 WO2023197094 A1 WO 2023197094A1 CN 2022086017 W CN2022086017 W CN 2022086017W WO 2023197094 A1 WO2023197094 A1 WO 2023197094A1
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WIPO (PCT)
Prior art keywords
reference signal
aperiodic reference
resource set
channel measurement
measurement resource
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PCT/CN2022/086017
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English (en)
Inventor
Fang Yuan
Yan Zhou
Tao Luo
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Qualcomm Incorporated
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Publication date
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Priority to PCT/CN2022/086017 priority Critical patent/WO2023197094A1/fr
Publication of WO2023197094A1 publication Critical patent/WO2023197094A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Definitions

  • the following relates to wireless communications, including beam selection for aperiodic reference signals.
  • 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.
  • a wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .
  • UE user equipment
  • the described techniques relate to improved methods, systems, devices, and apparatuses that support beam selection for aperiodic reference signals.
  • the described techniques provide for a user equipment (UE) to determine one or more transmission configuration indicator (TCI) states (e.g., beams) for receiving aperiodic reference signals in two or more channel measurement resource (CMR) sets when aperiodic reference signals are scheduled within a given duration (e.g., based on a time threshold) .
  • TCI transmission configuration indicator
  • CMR channel measurement resource
  • a UE may receive a control message scheduling an aperiodic reference signal in two CMR sets.
  • the control message may include an indication of multiple TCI codepoints, where each TCI codepoint is mapped to one or more TCI states.
  • the UE may identify a TCI codepoint indicated in the control message that maps to two TCI states and has the lowest identifier (ID) of the TCI codepoints indicated in the control message.
  • the UE may receive the aperiodic reference signal via the two CMR sets in accordance with the two TCI states mapped to the identified TCI codepoint.
  • the UE may receive a first aperiodic reference signal via a first CMR set in accordance with a first TCI state which maps to an identified TCI codepoint and receive a second aperiodic reference signal via a second CMR set in accordance with a second TCI state (which may be the same or different from the first TCI state) which also maps to the identified TCI codepoint.
  • a first aperiodic reference signal via a first CMR set in accordance with a first TCI state which maps to an identified TCI codepoint
  • receive a second aperiodic reference signal via a second CMR set in accordance with a second TCI state (which may be the same or different from the first TCI state) which also maps to the identified TCI codepoint.
  • the UE may identify that there is a scheduled downlink signal that at least partially overlaps in time with the two CMR sets indicated in the control message and may identify one or more TCI states associated with the downlink signal. For example, the UE may identify the downlink signal that at least partially overlaps in time with the two CMR sets and is associated with two TCI states. As such, the UE may receive the aperiodic reference signal via the two CMR sets in accordance with the two TCI states associated with the downlink signal. In another example, the UE may identify downlink signal that at least partially overlaps in time with the two CMR sets and is associated with one TCI state. As such, the UE may receive the aperiodic reference signal via the two CMR sets in accordance with the one TCI state associated with the downlink signal.
  • a method for wireless communications at a UE may include receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the apparatus may include a processor, memory coupled 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 that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, receive the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and receive the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the apparatus may include means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, means for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and means for receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • a non-transitory computer-readable medium storing code for wireless communications at a UE is described.
  • the code may include instructions executable by a processor to receive a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, receive the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and receive the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • receiving the control message may include operations, features, means, or instructions for receiving, in the control message, an indication of a set of multiple TCI codepoints associated with the first aperiodic reference signal and the second aperiodic reference signal, where one or more codepoints of the set of multiple TCI codepoints may be associated with a set of multiple TCI states, and where the TCI codepoint mapped to the first TCI state and the second TCI state may be associated with a codepoint, of the one or more codepoints, having a codepoint ID that satisfies a threshold.
  • receiving the first aperiodic reference signal via the first CMR set in accordance with the first TCI state may include operations, features, means, or instructions for receiving the first aperiodic reference signal via the first CMR set in accordance with the first TCI state based on the first aperiodic reference signal being scheduled within a time threshold.
  • receiving the second aperiodic reference signal via the second CMR set in accordance with the second TCI state may include operations, features, means, or instructions for receiving the second aperiodic reference signal via the second CMR set in accordance with the second TCI state based on the second aperiodic reference signal being scheduled within a time threshold.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a second control message that indicates an operation mode for the UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single downlink control information, multi-transmission reception point operation mode.
  • the first CMR set and the second CMR set may be associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • the respective values include a first entry and a second entry.
  • a method for wireless communications at a UE may include receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the apparatus may include a processor, memory coupled 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 that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and receive the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the apparatus may include means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and means for receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • a non-transitory computer-readable medium storing code for wireless communications at a UE is described.
  • the code may include instructions executable by a processor to receive a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and receive the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set may include operations, features, means, or instructions for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state and receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the first TCI state and the second TCI state correspond to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set may include operations, features, means, or instructions for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state and receiving the second aperiodic reference signal via the second CMR set in accordance with the first TCI state, where the first TCI state corresponds to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • receiving the first aperiodic reference signal and the second aperiodic reference signal in accordance with the first TCI state may include operations, features, means, or instructions for applying a quasi-co-location assumption of the downlink signal, where receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set may be based on applying the quasi-co-location assumption.
  • receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set may include operations, features, means, or instructions for receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set based on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a second control message that schedules the downlink signal corresponding to the at least one TCI state, where the second control message indicates that the downlink signal at least partially overlaps in time with the first CMR set and the second CMR set.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a second control message that indicates an operation mode for the UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single downlink control information, multi-transmission reception point operation mode.
  • the first CMR set and the second CMR set may be associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • the respective values include a first entry and a second entry.
  • a method for wireless communications at a network entity may include transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the apparatus may include a processor, memory coupled 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 that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, transmit the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and transmit the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the apparatus may include means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, means for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and means for transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • a non-transitory computer-readable medium storing code for wireless communications at a network entity is described.
  • the code may include instructions executable by a processor to transmit a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal, transmit the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint, and transmit the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • transmitting the control message may include operations, features, means, or instructions for transmitting, in the control message, an indication of a set of multiple TCI codepoints associated with the first aperiodic reference signal and the second aperiodic reference signal, where one or more codepoints of the set of multiple TCI codepoints may be associated with a set of multiple TCI states, and where the TCI codepoint mapped to the first TCI state and the second TCI state may be associated with a codepoint, of the one or more codepoints, having a codepoint ID that satisfies a threshold.
  • transmitting the first aperiodic reference signal via the first CMR set in accordance with the first TCI state may include operations, features, means, or instructions for transmitting the first aperiodic reference signal via the first CMR set in accordance with the first TCI state based on the first aperiodic reference signal being scheduled within a time threshold.
  • transmitting the second aperiodic reference signal via the second CMR set in accordance with the second TCI state may include operations, features, means, or instructions for transmitting the second aperiodic reference signal via the second CMR set in accordance with the second TCI state based on the second aperiodic reference signal being scheduled within a time threshold.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a second control message that indicates an operation mode for a UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single downlink control information, multi-transmission reception point operation mode.
  • the first CMR set and the second CMR set may be associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • the respective values include a first entry and a second entry.
  • a method for wireless communications at a network entity may include transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the apparatus may include a processor, memory coupled 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 that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and transmit the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the apparatus may include means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and means for transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • a non-transitory computer-readable medium storing code for wireless communications at a network entity is described.
  • the code may include instructions executable by a processor to transmit a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set and transmit the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set may include operations, features, means, or instructions for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state and transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the first TCI state and the second TCI state correspond to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set may include operations, features, means, or instructions for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state and transmitting the second aperiodic reference signal via the second CMR set in accordance with the first TCI state, where the first TCI state corresponds to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set may include operations, features, means, or instructions for transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set based on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a second control message that schedules the downlink signal corresponding to the at least one TCI state, where the second control message indicates that the downlink signal at least partially overlaps in time with the first CMR set and the second CMR set.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a second control message that indicates an operation mode for a UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single downlink control information, multi-transmission reception point operation mode.
  • the first CMR set and the second CMR set may be associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • FIG. 1 illustrates an example of a wireless communications system that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIG. 2 illustrates an example of a wireless communications system that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIG. 3A and 3B illustrate examples of wireless communications systems support beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIG. 4 illustrates an example of a process flow that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIGs. 5 and 6 show block diagrams of devices that support beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIG. 7 shows a block diagram of a communications manager that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIG. 8 shows a diagram of a system including a device that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIGs. 9 and 10 show block diagrams of devices that support beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIG. 11 shows a block diagram of a communications manager that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIG. 12 shows a diagram of a system including a device that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • FIGs. 13 through 16 show flowcharts illustrating methods that support beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • Some wireless communications may support channel state information reference signal (CSI-RS) transmissions that may be scheduled aperiodically.
  • a user equipment may receive, from a network entity, a control message, such as downlink control information (DCI) , that schedules the aperiodic CSI-RS to be transmitted via a channel measurement resource (CMR) set.
  • the control message may also include an indication of a beam for receiving the aperiodic CSI-RS.
  • the UE may be unable to switch to the indicated beam within a time threshold associated with the UE (e.g., a beam switching time) and the UE may use a default beam for receiving the aperiodic CSI-RS.
  • the UE may receive a control message scheduling aperiodic CSI-RS in two CMR sets and may be unable to determine one or more default beams for receiving the aperiodic CSI-RS via the two CMR sets.
  • a UE may receive a control message (e.g., DCI) scheduling the UE to receive aperiodic CSI-RS (s) in two CMR sets (associated with a CSI report) in a time duration less than a time threshold associated with the UE (e.g., a beam switching time) .
  • a control message e.g., DCI
  • the UE may determine one or more default beams to receive the aperiodic CSI-RS.
  • the UE may use two transmission configuration indicator (TCI) states (i.e. two default beams) for receiving the aperiodic CSI-RS, where the TCI states are mapped to a TCI codepoint indicated in the control message.
  • TCI transmission configuration indicator
  • the control message may include an indication of multiple TCI codepoints, where a subset of the TCI codepoints each map to two TCI states, and the UE may identify a TCI codepoint of the subset of TCI codepoints with the lowest identification value (e.g., ID) .
  • the UE may receive the aperiodic CSI-RS via the two CMR sets according to the two TCI states mapped to the identified TCI codepoint. For example, the UE may receive a first aperiodic CSI-RS via a first CMR set according to a first TCI state and a second aperiodic CSI-RS via a second CMR set according to a second TCI state, where the first TCI state and the second TCI state are mapped to a TCI codepoint (with the lowest ID) indicated in a control message.
  • the UE may use a TCI state (e.g., a default beam) for receiving the aperiodic CSI-RS, where the TCI state is associated with a downlink signal that overlaps (e.g., in time) with the two CMR sets.
  • a TCI state e.g., a default beam
  • the UE may receive a first aperiodic CSI-RS via a first CMR set according to the first TCI state and a second aperiodic CSI-RS via a second CMR set according to the first TCI state, where the first TCI state is associated with a downlink signal that overlaps with the two CMR sets.
  • the downlink signal may indicate two TCI states in the same symbols as the two CMR sets and the UE may receive the aperiodic CSI-RSs in accordance with the two TCI states.
  • the UE may receive a first aperiodic CSI-RS via a first CMR in accordance with a first TCI state and a second periodic CSI-RS via a second CMR in accordance with a second TCI state, where the first TCU state and the second TCI state are associated with the downlink signal.
  • aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are then described in the context of a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to beam selection for aperiodic reference signals.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the wireless communications system 100 may include one or more network entities 105, one or more 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, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-A Pro LTE-A Pro
  • NR New Radio
  • the network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities.
  • a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature.
  • network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g., a radio frequency (RF) access link) .
  • a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125.
  • the coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
  • RATs radio access technologies
  • the UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times.
  • the UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1.
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.
  • a node of the wireless communications system 100 which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein.
  • a node may be a UE 115.
  • a node may be a network entity 105.
  • a first node may be configured to communicate with a second node or a third node.
  • the first node may be a UE 115
  • the second node may be a network entity 105
  • the third node may be a UE 115.
  • the first node may be a UE 115
  • the second node may be a network entity 105
  • the third node may be a network entity 105.
  • the first, second, and third nodes may be different relative to these examples.
  • reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node.
  • disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
  • network entities 105 may communicate with the core network 130, or with one another, or both.
  • network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) .
  • network entities 105 may communicate with one another over a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130) .
  • network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof.
  • the backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) , one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof.
  • a UE 115 may communicate with the core network 130 through a communication link 155.
  • One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) .
  • a base station 140 e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be
  • a network entity 105 may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140) .
  • a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) .
  • IAB integrated access backhaul
  • O-RAN open RAN
  • vRAN virtualized RAN
  • C-RAN cloud RAN
  • a network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) 180 system, or any combination thereof.
  • An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) .
  • One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) .
  • one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
  • VCU virtual CU
  • VDU virtual DU
  • VRU virtual RU
  • the split of functionality between a CU 160, a DU 165, and an RU 175 is flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 175.
  • functions e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof
  • a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack.
  • the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) .
  • the CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160.
  • L1 e.g., physical (PHY) layer
  • L2 e.g., radio link control (RLC) layer, medium access control (MAC) layer
  • a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack.
  • the DU 165 may support one or multiple different cells (e.g., via one or more RUs 170) .
  • a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) .
  • a CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions.
  • CU-CP CU control plane
  • CU-UP CU user plane
  • a CU 160 may be connected to one or more DUs 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to one or more RUs 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) .
  • a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication over such communication links.
  • infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) .
  • IAB network one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other.
  • One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor.
  • One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140) .
  • the one or more donor network entities 105 may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120) .
  • IAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by DUs 165 of a coupled IAB donor.
  • IAB-MT IAB mobile termination
  • An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) .
  • the IAB nodes 104 may include DUs 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) .
  • one or more components of the disaggregated RAN architecture e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.
  • one or more components of the disaggregated RAN architecture may be configured to support beam selection for aperiodic reference signals as described herein.
  • some operations described as being performed by a UE 115 or a network entity 105 may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180) .
  • a UE 115 may include or may 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, among other examples.
  • a UE 115 may also include or may be referred to as 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 include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • MTC machine type communications
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • devices such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • the UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) over one or more carriers.
  • the term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125.
  • a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) .
  • BWP bandwidth part
  • Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling.
  • the wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation.
  • a UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration.
  • Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.
  • Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105.
  • the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105 may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105) .
  • a network entity 105 e.g., a base station 140, a CU 160, a DU 165, a RU 170
  • Signal waveforms transmitted over a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) .
  • MCM multi-carrier modulation
  • OFDM orthogonal frequency division multiplexing
  • DFT-S-OFDM discrete Fourier transform spread OFDM
  • a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related.
  • the quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) such that the more resource elements that a device receives and the higher the order of the modulation scheme, the higher the data rate may be for the device.
  • a wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
  • Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) .
  • Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
  • SFN system frame number
  • Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration.
  • a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots.
  • each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing.
  • Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) .
  • a slot may further be divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
  • a subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) .
  • TTI duration e.g., a quantity of symbol periods in a TTI
  • the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
  • Physical channels may be multiplexed on a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.
  • a control region e.g., a control resource set (CORESET)
  • CORESET control resource set
  • a control region for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier.
  • One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115.
  • one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner.
  • An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size.
  • Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
  • a network entity 105 may be movable and therefore provide communication coverage for a moving coverage area 110.
  • different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105.
  • the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105.
  • the wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.
  • the wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof.
  • the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) .
  • the UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions.
  • Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data.
  • Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications.
  • the terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
  • a UE 115 may be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) .
  • D2D device-to-device
  • P2P peer-to-peer
  • one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by or scheduled by the network entity 105.
  • a network entity 105 e.g., a base station 140, an RU 170
  • one or more UEs 115 in such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105.
  • groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to each of the other UEs 115 in the group.
  • a network entity 105 may facilitate the scheduling of resources for D2D communications.
  • D2D communications may be carried out between the UEs 115 without the involvement of a network entity 105.
  • 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) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) .
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management function
  • S-GW serving gateway
  • PDN Packet Data Network gateway
  • UPF user plane function
  • the control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130.
  • NAS non-access stratum
  • User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions.
  • the user plane entity may be connected to IP services 150 for one or more network operators.
  • the IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
  • IMS IP Multimedia Subsystem
  • the wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) .
  • the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length.
  • UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors.
  • the transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • HF high frequency
  • VHF very high frequency
  • the wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands.
  • the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • LAA License Assisted Access
  • LTE-U LTE-Unlicensed
  • NR NR technology
  • an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance.
  • operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA) .
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
  • a network entity 105 e.g., a base station 140, an RU 170
  • a 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.
  • the antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a network entity 105 may be located in diverse geographic locations.
  • a network entity 105 may have an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
  • 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 network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a 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 some 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 amplitude offsets, phase offsets, or both to signals carried via 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 network entity 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations.
  • a network entity 105 e.g., a base station 140, an RU 170
  • Some signals e.g., synchronization signals, reference signals, beam selection signals, or other control signals
  • the network entity 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission.
  • Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network entity 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network entity 105.
  • a transmitting device such as a network entity 105
  • a receiving device such as a UE 115
  • Some signals may be transmitted by transmitting device (e.g., a transmitting network entity 105, a transmitting UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as a receiving network entity 105 or a receiving UE 115) .
  • a single beam direction e.g., a direction associated with the receiving device, such as a receiving network entity 105 or a receiving UE 115
  • the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions.
  • a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
  • transmissions by a device may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network entity 105 to a UE 115) .
  • the UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands.
  • the network entity 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded.
  • a reference signal e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS)
  • the UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) .
  • PMI precoding matrix indicator
  • codebook-based feedback e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook
  • these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170)
  • a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
  • a receiving device may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a receiving device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • a receiving device e.g., a network entity 105
  • signals such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • a receiving device may perform reception in accordance with 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 (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions.
  • a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) .
  • the single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
  • receive configuration directions e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions
  • the wireless communications system 100 may support beam selection for aperiodic reference signals.
  • a UE 115 may receive a control message (e.g., a DCI) scheduling the UE 115 to receive aperiodic CSI-RS (s) in two CMR sets associated with a CSI report.
  • the control message may indicate a beam for receiving the aperiodic CSI-RS.
  • the UE 115 may be unable to switch to the indicate beam in a time duration less than a time threshold (e.g., beam switching time threshold) associated with the UE 115 and the UE 115 may determine one or more default beams for receiving the aperiodic CSI-RS.
  • a time threshold e.g., beam switching time threshold
  • the UE 115 may receive the aperiodic CSI-RS using (e.g., according to) two TCI states (e.g., two default beams) associated with a TCI codepoint indicated in the control message.
  • the control message may include an indication of multiple TCI codepoints, where a subset of the TCI codepoints each map to two TCI states, and the UE 115 may identify a TCI codepoint of the subset of TCI codepoints with the lowest (e.g., smallest) identifier (ID) value.
  • the UE 115 may receive the aperiodic CSI-RS via the two CMR sets in accordance with the two TCI states mapped to the identified TCI codepoint.
  • the UE 115 may use a TCI state (e.g., default beam) indicated in the downlink signal for receiving the aperiodic CSI-RS.
  • the UE 115 may receive aperiodic CSI-RSs via the two CMR sets in accordance with the TCI state indicted in the downlink signal.
  • the downlink signal may indicate two TCI states and the UE 115 may use the two TCI states for receiving the CSI-RS.
  • the UE 115 may receive the aperiodic CSI-RS via the two CMR sets in accordance with the two TCI states indicated in the downlink signal.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the wireless communications system 200 may implement or be implemented by aspects of the wireless communications system 100.
  • the wireless communications system 200 may include a network entity 105-a and a UE 115-a.
  • the UE 115-a may represent an example of a UE 115 as described herein, including with reference to FIG. 1.
  • the network entity 105-a may represent an example of a network entity 105 as described herein, including with reference to FIG. 1.
  • the UE 115-a may receive a control message 210 from the network entity 105-a over a communication link 205 triggering aperiodic CSI-RS with two CMR sets.
  • Some wireless communications systems may support CSI-RS transmissions that may be scheduled aperiodically.
  • a UE 115 may receive a control message (e.g., a DCI) from a network entity 105 scheduling an aperiodic CSI-RS. Additionally, the control message may indicate a beam for receiving the aperiodic CSI-RS.
  • the UE 115 may be associated with a beam switch timing threshold (e.g., beamSwitchingTiming, beamSwitchingTiming-r-16) .
  • the beam switch timing threshold may correspond to the time it takes the UE 115 to decode the DCI and switch to a new beam (e.g., a beam not currently used by the UE 115) .
  • the UE 115 may receive the control message scheduling the aperiodic CSI-RS on the indicated beam and the UE 115 may determine that the aperiodic CSI-RS is scheduled in a time that exceeds the beam switch timing threshold (e.g., the UE 115 has enough time to switch to the indicated beam) . As such, the UE 115 may switch to the indicated beam and may the aperiodic CSI-RS on the indicated beam. In some cases, the UE 115 may transmit a CSI report to the network entity based on receiving the aperiodic CSI-RS.
  • the beam switch timing threshold e.g., the UE 115 has enough time to switch to the indicated beam
  • the UE 115 may switch to the indicated beam and may the aperiodic CSI-RS on the indicated beam.
  • the UE 115 may transmit a CSI report to the network entity based on receiving the aperiodic CSI-RS.
  • the UE 115 may be unable to switch to the indicated beam within the beam switch timing threshold (e.g., the UE 115 does not have enough time to decode the DCI and switch to the indicated beam before the CSI-RS is scheduled to be received) .
  • a scheduling offset between the last symbol of the control message (e.g., the physical downlink control channel (PDCCH) carrying the triggering DCI) and the first symbol of the aperiodic CSI-RS (e.g., the aperiodic CSI-RS resources in the two CMR sets as non-zero power resource set list (e.g., NZP-CSI-RS-ResourceSet) configured without higher layer parameters trs-Info) may be smaller (e.g., shorter in duration) than the beam switch timing threshold (e.g., threshold beamSwitchingTime or beamSwitchTiming-r16) .
  • the beam switch timing threshold e.g., threshold beamSwitchingTime or beamSwitchTiming-r16
  • the UE 115 may determine a default beam for receiving the aperiodic CSI-RS (e.g., when the beam switch timing threshold value is one of the values of ⁇ 14, 28, 48 ⁇ and the configuration parameter enableBeamSwitchTiming is not provided or when a higher layer parameter enableBeamSwitchTiming is provided and two NZP-CSI-RS-ResourceSets are configured with the higher layer parameter repetition set to 'on' ) .
  • a default beam for receiving the aperiodic CSI-RS e.g., when the beam switch timing threshold value is one of the values of ⁇ 14, 28, 48 ⁇ and the configuration parameter enableBeamSwitchTiming is not provided or when a higher layer parameter enableBeamSwitchTiming is provided and two NZP-CSI-RS-ResourceSets are configured with the higher layer parameter repetition set to 'on' .
  • the beam switch timing threshold may be 48 (e.g., when the UE 115 provides beamSwitchTiming-r16, a higher layer parameter enableBeamSwitchTiming is provided and two NZP-CSI-RS-ResourceSets are configured with the higher layer parameter repetition set to 'off' or configured without the higher layer parameter repetition) .
  • the UE 115 may apply a quasi-co-location (QCL) assumption of another downlink signal to receive the aperiodic CSI-RS.
  • the other downlink signal may overlap (e.g., fully) in symbols with the aperiodic CSI-RS and may be associated with a control resource set (CORESET) pool index (e.g., CORESETPoolindex) that is the same as a CORESET pool index associated with the aperiodic CSI-RS.
  • CORESET control resource set
  • the UE 115 may apply QCL parameter (s) of a CORESET associated with a monitored search space with the lowest identifier (e.g., controlResourceSetId) among a set of CORESETs which are configured with the same value of a CORESET pool index as the control message scheduling the aperiodic CSI-RS.
  • QCL parameter s
  • the UE 115 may be configured with two default TCI states (e.g., enableTwoDefaultTCI-States) and at least one TCI codepoint is mapped to two TCI states.
  • the UE 115 may determine a default beam for receiving aperiodic CSI-RS based on a TCI state indicated in the other downlink signal.
  • the other downlink signal (e.g., physical downlink shared channel (PDSCH) ) may be associated with a scheduling offset larger than (e.g., longer in duration) or equal to a threshold associated with applying a QCL assumption (e.g., timeDurationForQCL) .
  • the UE 115 may receive the aperiodic CSI-RS using the indicated TCI state (e.g., the UE 115 may apply two QCL assumptions of the other downlink signal when receiving the aperiodic CSI-RS) .
  • the downlink signal (e.g., PDSCH) may indicate two TCI states (e.g., in the same symbols as the aperiodic CSI-RS) and the UE 115 may use (e.g., apply) a first TCI state of the two TCI states when receiving the aperiodic CSI-RS.
  • the UE may determine a default beam for receiving aperiodic CSI-RS based on a TCI state mapped to a TCI codepoint indicated in the control message scheduling the aperiodic CSI-RS (e.g., the UE 115 may apply two TCI states corresponding to a lowest TCI codepoint among those mapped to two TCI states) .
  • the control message may indicate a set of TCI codepoints and a subset of the TCI codepoints may map to two TCI states.
  • the UE 115 may identify a TCI codepoint of the subset of TCI codepoints (mapped to two TCI states) with a lowest TCI codepoint ID of the TCI codepoint IDs associated with the subset of TCI codepoints (e.g., and applicable to a PDSCH within an active bandwidth part (BWP) of a cell in which the aperiodic CSI-RS is to be received) . Additionally, the UE 115 may use a first TCI state of two TCI states mapped to the identified TCI codepoint for receiving the aperiodic CSI-RS.
  • BWP active bandwidth part
  • a control message may trigger (e.g., schedule) aperiodic CSI-RS (s) in two CMR sets (e.g., due to the UE 115 being configured with two CSI-RS resource sets for beam management while reporting CSI information in multi-transmission reception point (TRP) scenarios) .
  • the UE 115 may be unable to determine one or more default beams for receiving the aperiodic CSI-RS via the two CMR sets (e.g., due to both CMR sets being associated with the same CORESET pool index) .
  • a UE 115-a may be configured with two default TCI states (e.g., enableTwoDefaultTCI-States) and may be enabled for single DCI multi-TRP operations. Additionally, the UE 115-a may receive a control message 210 from a network entity 105-a via a communication link 205 scheduling (e.g., triggering) aperiodic CSI-RSs 215 (e.g., reference signals) in two CMR sets 220 (e.g., associated with a CSI report) .
  • TCI states e.g., enableTwoDefaultTCI-States
  • the UE 115-a may receive a control message 210 from a network entity 105-a via a communication link 205 scheduling (e.g., triggering) aperiodic CSI-RSs 215 (e.g., reference signals) in two CMR sets 220 (e.g., associated with a CSI report) .
  • the control message 210 may schedule an aperiodic CSI-RS 215-a in a CMR set 220-a and an aperiodic CSI-RS 215-b in a CMR set 220-b.
  • the aperiodic CSI-RSs 215 may be scheduled within a beam switch timing threshold (e.g., beamSwitchingTiming/beamSwitchTiming-r-16) associated with the UE 115-a.
  • UE 115-a may determine one or more default beams for receiving the aperiodic CSI-RSs 215.
  • the UE 115-a may report the beam switch timing threshold to the network entity 105-a.
  • the UE 115-a may receive the aperiodic CSI-RSs 215 in the two CMR sets 220 using TCI states 230 (e.g., default beams) associated with a TCI codepoint 225 indicated in the control message 210 (e.g., when at least on TCI codepoint 225 is mapped to two TCI states 230) .
  • TCI states 230 e.g., default beams
  • control message 210 may indicate a set of TCI codepoints 225 (e.g., in a TCI activation MAC control element (MAC-CE) ) and each TCI codepoint 225 may be associated with an ID.
  • MAC-CE TCI activation MAC control element
  • a subset of the set of TCI codepoints 225 indicated in the control message 210, such as a TCI codepoint 225-a, a TCI codepoint 225-b, and a TCI codepoint 225-c may map to two TCI states 230.
  • the UE 115-a may identify a TCI codepoint 225-a from the subset of the set of TCI codepoints 225 that is associated with a lowest ID of the IDs associated each TCI codepoint 225 of the subset of TCI codepoints 225.
  • the TCI codepoint 225-a may be associated with an ID of 3
  • the TCI codepoint 225-b may be associated with an ID of 1
  • the TCI codepoint 225-c may be associated with an ID of 5.
  • the UE 115-a may select (e.g., identify) the TCI codepoint 225-b and identify a TCI state 230-c (e.g., a first default beam) and a TCI state 230-d (e.g., a second default beam) mapped to (e.g., in) the TCI codepoint 225-b for receiving the aperiodic CSI-RSs 215.
  • a TCI state 230-c e.g., a first default beam
  • a TCI state 230-d e.g., a second default beam
  • the UE 115-a may receive the aperiodic CSI-RS 215-a via the CMR set 220-a in accordance with a TCI state 230-a, where the TCI state 230-a is the same as the TCI state 230-c, and receive the aperiodic CSI-RS 215-b via the CMR set 220-b in accordance with a TCI state 230-b, where the TCI state 230-b is the same as the TCI state 230-d (e.g., using a one to one mapping between CMR sets 220 and TCI states 230) .
  • the UE 115-a may receive the aperiodic CSI-RSs 215 in the two CMR sets 220 using one or more TCI states 230 indicated in the downlink signal 235.
  • the network entity 105-a may schedule the downlink signal 235 in symbols that are the same as (e.g., overlap with) symbols associated with the CMR sets 220. That is, the downlink signal 235 may partially overlap in time with the CMR sets 220.
  • the downlink signal 235 may be received with a TCI state 230-e (e.g., a single TCI state) .
  • the UE 115-a may receive the aperiodic CSI-RS 215-a via the CMR set 220-a in accordance with the TCI state 230-a and receive the aperiodic CSI-RS 215-b via the CMR set 220-b in accordance with the TCI state 230-b, where the TCI state 230-a and the TCI state 230-b are the same as the TCI state 230-e (e.g., the UE 115-a receives the aperiodic CSI-RSs 215 using a single default beam) .
  • the UE 115-a may apply a QCL assumption of the downlink signal 235 when receiving the aperiodic CSI-RSs 215 in the CMR sets 220.
  • the downlink signal 235 may be received with the TCI state 230-e and a TCI state 230-f (e.g., two TCI states 230) .
  • the UE 115-a may receive the aperiodic CSI-RS 215-a via the CMR set 220-a in accordance with the TCI state 230-a, where the TCI state 230-a is the same as the TCI state 230-e, and receive the aperiodic CSI-RS 215-b via the CMR set 220-b in accordance with TCI state 230-b, where the TCI state 230-b is the same as the TCI state 230-f (e.g., the UE 115-a receives the aperiodic CSI-RSs 215 using two default beams and there is a one to one mapping between CMR sets 220 and TCI states 230) .
  • the UE 115-a may apply two QCL assumptions of the downlink signal 235 when receiving the aperiodic CSI-RSs 215 in the CMR sets 220 (e.g., a QCL assumptions per TCI state 230) .
  • the network entity 105-a may transmit a control message 210 to the UE 115-a indicating the scheduling of the downlink signal 235.
  • the downlink signal 235 may be transmitted periodically.
  • the CMR sets 220 may map to entries (e.g., values) in a non-zero power resource set list or a synchronization signal block set list (e.g., aperiodic CSI(s) may correspond to first and second entries in nzp-CSI -RS-ResourceSetList or csi-SSB -ResourceSetList are received by a first TCI and second TCI) .
  • entries e.g., values
  • a synchronization signal block set list e.g., aperiodic CSI(s) may correspond to first and second entries in nzp-CSI -RS-ResourceSetList or csi-SSB -ResourceSetList are received by a first TCI and second TCI
  • the CMR set 220-a (e.g., received in accordance with a first TCI state 230 in a TCI codepoint 225) may correspond to a first entry in the non-zero power resource set list or the synchronization signal block set list and the CMR set 220-b (e.g., received in accordance with a second TCI state 230 in the TCI codepoint 225) may correspond to a second entry in the non-zero power resource set list or the synchronization signal block set list.
  • aperiodic CSI-RS 215-a and an aperiodic CSI-RS 215-b may be the same aperiodic CSI-RS 215, transmitted using different CMR sets 220.
  • FIG. 3A illustrates an example of a wireless communications system 300-a that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the wireless communications system 300-a may implement or be implemented by aspects of the wireless communications system 100 and the wireless communications system 200.
  • the wireless communications system 300-a may include a network entity 105-b and a UE 115-b.
  • the UE 115-b may represent an example of a UE 115 as described herein, including with reference to FIG. 1.
  • the network entity 105-b may represent an example of a network entity 105 as described herein, including with reference to FIG. 1.
  • the UE 115-b may receive a control message 310 from the network entity 105-b triggering aperiodic CSI-RSs 315 with two CMR sets.
  • a UE 115-b may receive a control message 310 from a network entity 105-b scheduling aperiodic CSI-RSs 315 in two CMR sets (e.g., associated with a CSI report) .
  • the network entity 105-b may schedule the aperiodic CSI-RSs 315 within a beam switch timing threshold associated with the UE 115-b and the UE 115-b may determine one or more default beams for receiving the aperiodic CSI-RSs 315.
  • the network entity 105-b may schedule a downlink signal 320-a in symbols 325 that are the same as symbols 325 associated with two CMR sets (e.g., for aperiodic CSI-RSs 315) . That is, the downlink signal 320-a may overlap at least partially in time with the CMR sets (e.g., aperiodic CSI-RSs 315) .
  • the network entity 105-b may schedule an aperiodic CSI-RS 315-a in a first CMR set associated with a downlink communication 305-a, an aperiodic CSI-RS 315-b in a second CMR set associated with a downlink communication 305-b, and the downlink signal 320-a in resources associated with a downlink communication 305-c. Further, the network entity 105-b may schedule the aperiodic CSI-RS 315-a, the aperiodic CSI-RS 315-b, and the downlink signal 320 in symbols 325-a. As such, the UE 115-a may receive the aperiodic CSI-RSs 315 in the two CMR sets using one or more TCI states indicated in the downlink signal 320-a, as described with reference to FIG. 2.
  • the network entity 105-b may transmit a control message 310 to the UE 115-b indicating the scheduling of the downlink signal 320-a.
  • the downlink signal 320-a may be transmitted periodically (e.g., according to a periodicity) and the UE 115-b may determine the scheduling of the downlink signal 320-a based on the periodicity of the downlink signal 320-a.
  • FIG. 3B illustrates an example of a wireless communications system 300-b that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the wireless communications system 300-b may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, and the wireless communications system 300-a.
  • the wireless communications system 300-b may include a network entity 105-c and a UE 115-c.
  • the UE 115-c may represent an example of a UE 115 as described herein, including with reference to FIG. 1.
  • the network entity 105-c may represent an example of a network entity 105 as described herein, including with reference to FIG. 1.
  • the UE 115-c may receive a control message 310 from the network entity 105-c triggering aperiodic CSI-RSs 315 via two CMR sets.
  • a UE 115-c may receive a control message 310 from a network entity 105-c scheduling aperiodic CSI-RSs 315 in two CMR sets (e.g., associated with a CSI report) .
  • the network entity 105-c may schedule the aperiodic CSI-RSs 315 within a beam switch timing threshold associated with the UE 115-b and the UE 115-b may determine one or more default beams for receiving the aperiodic CSI-RSs 315.
  • the network entity 105-c may schedule a downlink signal 320-b in symbols 325, such as symbols 325-c, that are not the same as the symbols 325, such as symbols 325-b, scheduled for the two CMR sets (e.g., for aperiodic CSI-RSs 315) . That is, the downlink signal 320-b may not overlap at least partially in time with the CMR sets (e.g., aperiodic CSI-RSs 315) .
  • the network entity 105-c may schedule an aperiodic CSI-RS 315-c in a first CMR set associated with a downlink communication 305-d, an aperiodic CSI-RS 315-d in a second CMR set associated with a downlink communication 305-e, and the downlink signal 320-b in resources associated with a downlink communication 305-f. Further, the network entity 105-c may schedule the aperiodic CSI-RS 315-c and the aperiodic CSI-RS 315-d in the symbols 325-b and the downlink signal 320 in the symbols 325-c. As such, the UE 115-c may receive the aperiodic CSI-RSs 315 in the two CMR sets using TCI states associated with a TCI codepoint indicated in the control message 310, as described with reference to FIG. 2.
  • the network entity 105-c may transmit a control message 310 to the UE 115-c indicating the scheduling of the downlink signal 320-b.
  • the downlink signal 320-b may be transmitted periodically (e.g., according to a periodicity) and the UE 115-b may determine the scheduling of the downlink signal 320-b based on the periodicity.
  • FIG. 4 illustrates an example of a process flow 400 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the process flow 400 may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, and the wireless communications systems 300.
  • the process flow 400 may include a network entity 105-d and a UE 115-d.
  • the UE 115-d may represent an example of a UE 115 as described herein, including with reference to FIG. 1.
  • the network entity 105-d may represent an example of a network entity 105 as described herein, including with reference to FIG. 1.
  • the UE 115-d may receive a first control message from the network entity 105-d triggering aperiodic CSI-RS with two CMR sets.
  • the network entity 105-d may transmit a first control message to the UE 115-d, the first control message scheduling (e.g., triggering) a first aperiodic reference signal (e.g., aperiodic CSI-RS) for a first CMR set and schedules a second aperiodic reference signal for (e.g., in) a second CMR set.
  • the first control message may include (e.g., indicate) a set of TCI codepoints associated with the first aperiodic reference signal and the second aperiodic reference signal and each TCI codepoint may have (e.g., be associated with) a codepoint ID.
  • one or more TCI codepoints of the set of TCI codepoints may be associated with (e.g., map to) multiple TCI states (e.g., two TCI states) .
  • the first CMR set and the second CMR set may be associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • the first CMR set may be associated with a first entry in the non-zero power resource set list or in the synchronization signal block set list and the second CMR set may be associated with a second entry in the non-zero power resource set list or in the synchronization signal block set list.
  • the UE 115-d may receive a second control message from the network entity 105-d.
  • the second control message may indicate an operation mode for the UE, a set of default TCI indicator states for the UE (e.g., two default TCI states) , or both.
  • the operation mode may include a single DCI, multi-TRP operation mode.
  • the second control message may schedule a downlink signal which indicates (e.g., corresponds to) at least one TCI state.
  • the second control message may indicate that the downlink signal at least partially overlaps in time with the first CMR set and the second CMR set (e.g., overlaps in time with the aperiodic reference signals) .
  • the UE 115-d may apply one or more QCL assumptions of the downlink signal to determine one or more default beams for receiving the aperiodic reference signals.
  • the UE 115-d may receive the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set. In some cases, the UE 115-d may receive the first aperiodic reference signal in accordance with a first TCI state and the second aperiodic reference signal in accordance with a second TCI state, where the first TCI state and the second TCI state are mapped to a TCI codepoint included in the first control message.
  • the TCI codepoint mapped to the first TCI state and the second TCI state may be associated with a TCI codepoint, of the set of TCI codepoints, have a codepoint ID that satisfies a threshold (e.g., is the lowest ID) .
  • the UE 115-d may receive the first aperiodic reference signal via the first CMR set in accordance with the first TCI state and the second aperiodic reference signal via the second CMR set in accordance with the second TCI state based on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • the UE 115-d may receive the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the UE 115-d may receive the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, wherein the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to (e.g., indicated by) the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the UE 115-d may receive the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR in accordance with the least one TCI state corresponding the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set based on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • the UE 115-d may receive the first aperiodic reference signal via the first CMR set in accordance with a first TCI state and the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, wherein the first TCI state and the second TCI state correspond to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the UE 115-d may receive the first aperiodic reference signal via the first CMR set in accordance with a first TCI state and the second aperiodic reference signal via the second CMR set in accordance with the first TCI state, wherein the first TCI state corresponds to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports beam selection for aperiodic reference signals in accordance with one or more 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 transmitter 515, and a communications manager 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 provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to beam selection for aperiodic reference signals) . Information may be passed on to other components of the device 505.
  • the receiver 510 may utilize a single antenna or a set of multiple antennas.
  • the transmitter 515 may provide a means for transmitting signals generated by other components of the device 505.
  • the transmitter 515 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to beam selection for aperiodic reference signals) .
  • the transmitter 515 may be co-located with a receiver 510 in a transceiver module.
  • the transmitter 515 may utilize a single antenna or a set of multiple antennas.
  • the communications manager 520, the receiver 510, the transmitter 515, or various combinations thereof or various components thereof may be examples of means for performing various aspects of beam selection for aperiodic reference signals as described herein.
  • the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
  • the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • DSP digital signal processor
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory) .
  • the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure) .
  • code e.g., as communications management software or firmware
  • the functions of the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a
  • the communications manager 520 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 510, the transmitter 515, or both.
  • the communications manager 520 may receive information from the receiver 510, send information to the transmitter 515, or be integrated in combination with the receiver 510, the transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.
  • the communications manager 520 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the communications manager 520 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the communications manager 520 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the communications manager 520 may be configured as or otherwise support a means for receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the communications manager 520 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the communications manager 520 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the communications manager 520 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the device 505 e.g., a processor controlling or otherwise coupled with the receiver 510, the transmitter 515, the communications manager 520, or a combination thereof
  • the device 505 may support techniques for beam selection for aperiodic reference signals which may result in reduced processing, reduced power consumption, more efficient utilization of communication resources, among other advantages.
  • FIG. 6 shows a block diagram 600 of a device 605 that supports beam selection for aperiodic reference signals in accordance with one or more 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 transmitter 615, and a communications manager 620.
  • 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 provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to beam selection for aperiodic reference signals) . Information may be passed on to other components of the device 605.
  • the receiver 610 may utilize a single antenna or a set of multiple antennas.
  • the transmitter 615 may provide a means for transmitting signals generated by other components of the device 605.
  • the transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to beam selection for aperiodic reference signals) .
  • the transmitter 615 may be co-located with a receiver 610 in a transceiver module.
  • the transmitter 615 may utilize a single antenna or a set of multiple antennas.
  • the device 605, or various components thereof may be an example of means for performing various aspects of beam selection for aperiodic reference signals as described herein.
  • the communications manager 620 may include a reference signal component 625 a TCI state component 630, or any combination thereof.
  • the communications manager 620 may be an example of aspects of a communications manager 520 as described herein.
  • the communications manager 620, or various components thereof may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 610, the transmitter 615, or both.
  • the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.
  • the communications manager 620 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the reference signal component 625 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the TCI state component 630 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the TCI state component 630 may be configured as or otherwise support a means for receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the communications manager 620 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the reference signal component 625 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the TCI state component 630 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • FIG. 7 shows a block diagram 700 of a communications manager 720 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the communications manager 720 may be an example of aspects of a communications manager 520, a communications manager 620, or both, as described herein.
  • the communications manager 720, or various components thereof, may be an example of means for performing various aspects of beam selection for aperiodic reference signals as described herein.
  • the communications manager 720 may include a reference signal component 725, a TCI state component 730, a TCI codepoint component 735, a scheduling component 740, a configuration component 745, a QCL component 750, or any combination thereof.
  • Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the communications manager 720 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the reference signal component 725 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the TCI state component 730 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the TCI state component 730 may be configured as or otherwise support a means for receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the TCI codepoint component 735 may be configured as or otherwise support a means for receiving, in the control message, an indication of a set of multiple TCI codepoints associated with the first aperiodic reference signal and the second aperiodic reference signal, where one or more codepoints of the set of multiple TCI codepoints are associated with a set of multiple TCI states, and where the TCI codepoint mapped to the first TCI state and the second TCI state is associated with a codepoint, of the one or more codepoints, having a codepoint identifier that satisfies a threshold.
  • the scheduling component 740 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set in accordance with the first TCI state based on the first aperiodic reference signal being scheduled within a time threshold.
  • the scheduling component 740 may be configured as or otherwise support a means for receiving the second aperiodic reference signal via the second CMR set in accordance with the second TCI state based on the second aperiodic reference signal being scheduled within a time threshold.
  • the configuration component 745 may be configured as or otherwise support a means for receiving a second control message that indicates an operation mode for the UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single DCI, multi-TRP operation mode.
  • the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • the respective values include a first entry and a second entry.
  • the communications manager 720 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the reference signal component 725 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the TCI state component 730 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the TCI state component 730 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state.
  • the TCI state component 730 may be configured as or otherwise support a means for receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the first TCI state and the second TCI state correspond to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the TCI state component 730 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state.
  • the TCI state component 730 may be configured as or otherwise support a means for receiving the second aperiodic reference signal via the second CMR set in accordance with the first TCI state, where the first TCI state corresponds to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the QCL component 750 may be configured as or otherwise support a means for applying a QCL assumption of the downlink signal, where receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set is based on applying the QCL assumption.
  • the scheduling component 740 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set based on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • the scheduling component 740 may be configured as or otherwise support a means for receiving a second control message that schedules the downlink signal corresponding to the at least one TCI state, where the second control message indicates that the downlink signal at least partially overlaps in time with the first CMR set and the second CMR set.
  • the configuration component 745 may be configured as or otherwise support a means for receiving a second control message that indicates an operation mode for the UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single DCI, multi-TRP operation mode.
  • the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • the respective values include a first entry and a second entry.
  • FIG. 8 shows a diagram of a system 800 including a device 805 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the device 805 may be an example of or include the components of a device 505, a device 605, or a UE 115 as described herein.
  • the device 805 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof.
  • the device 805 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 820, an input/output (I/O) controller 810, a transceiver 815, an antenna 825, a memory 830, code 835, and a processor 840. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 845) .
  • a bus 845 e.g., a bus 845
  • the I/O controller 810 may manage input and output signals for the device 805.
  • the I/O controller 810 may also manage peripherals not integrated into the device 805.
  • the I/O controller 810 may represent a physical connection or port to an external peripheral.
  • the I/O controller 810 may utilize an operating system such as or another known operating system.
  • the I/O controller 810 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 810 may be implemented as part of a processor, such as the processor 840.
  • a user may interact with the device 805 via the I/O controller 810 or via hardware components controlled by the I/O controller 810.
  • the device 805 may include a single antenna 825. However, in some other cases, the device 805 may have more than one antenna 825, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 815 may communicate bi-directionally, via the one or more antennas 825, wired, or wireless links as described herein.
  • the transceiver 815 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 815 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 825 for transmission, and to demodulate packets received from the one or more antennas 825.
  • the transceiver 815 may be an example of a transmitter 515, a transmitter 615, a receiver 510, a receiver 610, or any combination thereof or component thereof, as described herein.
  • the memory 830 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 830 may store computer-readable, computer-executable code 835 including instructions that, when executed by the processor 840, cause the device 805 to perform various functions described herein.
  • the code 835 may be stored in a non-transitory computer-readable medium such as system memory or another 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.
  • the memory 830 may contain, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • 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 beam selection for aperiodic reference signals) .
  • the device 805 or a component of the device 805 may include a processor 840 and memory 830 coupled with or to the processor 840, the processor 840 and memory 830 configured to perform various functions described herein.
  • the communications manager 820 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the communications manager 820 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the communications manager 820 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the communications manager 820 may be configured as or otherwise support a means for receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the communications manager 820 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the communications manager 820 may be configured as or otherwise support a means for receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the communications manager 820 may be configured as or otherwise support a means for receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the device 805 may support techniques for beam selection for aperiodic reference signals which may result in improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, improved utilization of processing capability, among other advantages.
  • the communications manager 820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 815, the one or more antennas 825, or any combination thereof.
  • the communications manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 820 may be supported by or performed by the processor 840, the memory 830, the code 835, or any combination thereof.
  • the code 835 may include instructions executable by the processor 840 to cause the device 805 to perform various aspects of beam selection for aperiodic reference signals as described herein, or the processor 840 and the memory 830 may be otherwise configured to perform or support such operations.
  • FIG. 9 shows a block diagram 900 of a device 905 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the device 905 may be an example of aspects of a network entity 105 as described herein.
  • the device 905 may include a receiver 910, a transmitter 915, and a communications manager 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 provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) .
  • Information may be passed on to other components of the device 905.
  • the receiver 910 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 910 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
  • the transmitter 915 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 905.
  • the transmitter 915 may output information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) .
  • the transmitter 915 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 915 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
  • the transmitter 915 and the receiver 910 may be co-located in a transceiver, which may include or be coupled with a modem.
  • the communications manager 920, the receiver 910, the transmitter 915, or various combinations thereof or various components thereof may be examples of means for performing various aspects of beam selection for aperiodic reference signals as described herein.
  • the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
  • the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory) .
  • the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure) .
  • code e.g., as communications management software or firmware
  • the functions of the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a
  • the communications manager 920 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both.
  • the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
  • the communications manager 920 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the communications manager 920 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the communications manager 920 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the communications manager 920 may be configured as or otherwise support a means for transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the communications manager 920 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the communications manager 920 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the communications manager 920 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the device 905 e.g., a processor controlling or otherwise coupled with the receiver 910, the transmitter 915, the communications manager 920, or a combination thereof
  • the device 905 may support techniques for beam selection for aperiodic reference signals which may result in reduced processing, reduced power consumption, more efficient utilization of communication resources, among other advantages.
  • FIG. 10 shows a block diagram 1000 of a device 1005 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the device 1005 may be an example of aspects of a device 905 or a network entity 105 as described herein.
  • the device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020.
  • 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 provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) .
  • Information may be passed on to other components of the device 1005.
  • the receiver 1010 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1010 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
  • the transmitter 1015 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1005.
  • the transmitter 1015 may output information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) .
  • the transmitter 1015 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1015 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
  • the transmitter 1015 and the receiver 1010 may be co-located in a transceiver, which may include or be coupled with a modem.
  • the device 1005, or various components thereof, may be an example of means for performing various aspects of beam selection for aperiodic reference signals as described herein.
  • the communications manager 1020 may include a reference signal component 1025 a TCI state component 1030, or any combination thereof.
  • the communications manager 1020 may be an example of aspects of a communications manager 920 as described herein.
  • the communications manager 1020, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1010, the transmitter 1015, or both.
  • the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.
  • the communications manager 1020 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the reference signal component 1025 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the TCI state component 1030 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the TCI state component 1030 may be configured as or otherwise support a means for transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the communications manager 1020 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the reference signal component 1025 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the TCI state component 1030 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • FIG. 11 shows a block diagram 1100 of a communications manager 1120 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the communications manager 1120 may be an example of aspects of a communications manager 920, a communications manager 1020, or both, as described herein.
  • the communications manager 1120, or various components thereof, may be an example of means for performing various aspects of beam selection for aperiodic reference signals as described herein.
  • the communications manager 1120 may include a reference signal component 1125, a TCI state component 1130, a TCI codepoint component 1135, a scheduling component 1140, a configuration component 1145, or any combination thereof.
  • Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses) which may include communications within a protocol layer of a protocol stack, communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105) , or any combination thereof.
  • the communications manager 1120 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the reference signal component 1125 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the TCI state component 1130 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the TCI state component 1130 may be configured as or otherwise support a means for transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the TCI codepoint component 1135 may be configured as or otherwise support a means for transmitting, in the control message, an indication of a set of multiple TCI codepoints associated with the first aperiodic reference signal and the second aperiodic reference signal, where one or more codepoints of the set of multiple TCI codepoints are associated with a set of multiple TCI states, and where the TCI codepoint mapped to the first TCI state and the second TCI state is associated with a codepoint, of the one or more codepoints, having a codepoint identifier that satisfies a threshold.
  • the scheduling component 1140 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set in accordance with the first TCI state based on the first aperiodic reference signal being scheduled within a time threshold.
  • the scheduling component 1140 may be configured as or otherwise support a means for transmitting the second aperiodic reference signal via the second CMR set in accordance with the second TCI state based on the second aperiodic reference signal being scheduled within a time threshold.
  • the configuration component 1145 may be configured as or otherwise support a means for transmitting a second control message that indicates an operation mode for a UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single DCI, multi-TRP operation mode.
  • the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • the respective values include a first entry and a second entry.
  • the communications manager 1120 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the reference signal component 1125 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the TCI state component 1130 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the TCI state component 1130 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state.
  • the TCI state component 1130 may be configured as or otherwise support a means for transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the first TCI state and the second TCI state correspond to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the TCI state component 1130 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state.
  • the TCI state component 1130 may be configured as or otherwise support a means for transmitting the second aperiodic reference signal via the second CMR set in accordance with the first TCI state, where the first TCI state corresponds to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the scheduling component 1140 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set based on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • the scheduling component 1140 may be configured as or otherwise support a means for transmitting a second control message that schedules the downlink signal corresponding to the at least one TCI state, where the second control message indicates that the downlink signal at least partially overlaps in time with the first CMR set and the second CMR set.
  • the configuration component 1145 may be configured as or otherwise support a means for transmitting a second control message that indicates an operation mode for a UE, a set of multiple default TCI states for the UE, or both, where the operation mode includes a single DCI, multi-TRP operation mode.
  • the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the device 1205 may be an example of or include the components of a device 905, a device 1005, or a network entity 105 as described herein.
  • the device 1205 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which may include communications over one or more wired interfaces, over one or more wireless interfaces, or any combination thereof.
  • the device 1205 may include components that support outputting and obtaining communications, such as a communications manager 1220, a transceiver 1210, an antenna 1215, a memory 1225, code 1230, and a processor 1235. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1240) .
  • buses e
  • the transceiver 1210 may support bi-directional communications via wired links, wireless links, or both as described herein.
  • the transceiver 1210 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1210 may include a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the device 1205 may include one or more antennas 1215, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently) .
  • the transceiver 1210 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1215, by a wired transmitter) , to receive modulated signals (e.g., from one or more antennas 1215, from a wired receiver) , and to demodulate signals.
  • the transceiver 1210, or the transceiver 1210 and one or more antennas 1215 or wired interfaces, where applicable, may be an example of a transmitter 915, a transmitter 1015, a receiver 910, a receiver 1010, or any combination thereof or component thereof, as described herein.
  • the transceiver may be operable to support communications via one or more communications links (e.g., a communication link 125, a backhaul communication link 120, a midhaul communication link 162, a fronthaul communication link 168) .
  • one or more communications links e.g., a communication link 125, a backhaul communication link 120, a midhaul communication link 162, a fronthaul communication link 168 .
  • the memory 1225 may include RAM and ROM.
  • the memory 1225 may store computer-readable, computer-executable code 1230 including instructions that, when executed by the processor 1235, cause the device 1205 to perform various functions described herein.
  • the code 1230 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code 1230 may not be directly executable by the processor 1235 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 1225 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 1235 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, discrete gate or transistor logic, a discrete hardware component, or any combination thereof) .
  • the processor 1235 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 1235.
  • the processor 1235 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1225) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting beam selection for aperiodic reference signals) .
  • the device 1205 or a component of the device 1205 may include a processor 1235 and memory 1225 coupled with the processor 1235, the processor 1235 and memory 1225 configured to perform various functions described herein.
  • the processor 1235 may be an example of a cloud-computing platform (e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (e.g., by executing code 1230) to perform the functions of the device 1205.
  • a cloud-computing platform e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances
  • the functions e.g., by executing code 1230
  • a bus 1240 may support communications of (e.g., within) a protocol layer of a protocol stack.
  • a bus 1240 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack) , which may include communications performed within a component of the device 1205, or between different components of the device 1205 that may be co-located or located in different locations (e.g., where the device 1205 may refer to a system in which one or more of the communications manager 1220, the transceiver 1210, the memory 1225, the code 1230, and the processor 1235 may be located in one of the different components or divided between different components) .
  • the communications manager 1220 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links) .
  • the communications manager 1220 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • the communications manager 1220 may manage communications with other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other network entities 105.
  • the communications manager 1220 may support an X2 interface within an LTE/LTE-A wireless communications network technology to provide communication between network entities 105.
  • the communications manager 1220 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the communications manager 1220 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the communications manager 1220 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the communications manager 1220 may be configured as or otherwise support a means for transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the communications manager 1220 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the communications manager 1220 may be configured as or otherwise support a means for transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the communications manager 1220 may be configured as or otherwise support a means for transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the device 1205 may support techniques for beam selection for aperiodic reference signals which may result in improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, improved utilization of processing capability, among other advantages.
  • the communications manager 1220 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1210, the one or more antennas 1215 (e.g., where applicable) , or any combination thereof.
  • the communications manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1220 may be supported by or performed by the processor 1235, the memory 1225, the code 1230, the transceiver 1210, or any combination thereof.
  • the code 1230 may include instructions executable by the processor 1235 to cause the device 1205 to perform various aspects of beam selection for aperiodic reference signals as described herein, or the processor 1235 and the memory 1225 may be otherwise configured to perform or support such operations.
  • FIG. 13 shows a flowchart illustrating a method 1300 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1300 may be implemented by a UE or its components as described herein.
  • the operations of the method 1300 may be performed by a UE 115 as described with reference to FIGs. 1 through 8.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
  • the method may include receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the operations of 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a reference signal component 725 as described with reference to FIG. 7.
  • the method may include receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the operations of 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a TCI state component 730 as described with reference to FIG. 7.
  • the method may include receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the operations of 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by a TCI state component 730 as described with reference to FIG. 7.
  • FIG. 14 shows a flowchart illustrating a method 1400 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1400 may be implemented by a UE or its components as described herein.
  • the operations of the method 1400 may be performed by a UE 115 as described with reference to FIGs. 1 through 8.
  • a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
  • the method may include receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the operations of 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a reference signal component 725 as described with reference to FIG. 7.
  • the method may include receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the operations of 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a TCI state component 730 as described with reference to FIG. 7.
  • FIG. 15 shows a flowchart illustrating a method 1500 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1500 may be implemented by a network entity or its components as described herein.
  • the operations of the method 1500 may be performed by a network entity as described with reference to FIGs. 1 through 4 and 9 through 12.
  • a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
  • the method may include transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message including a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal.
  • the operations of 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a reference signal component 1125 as described with reference to FIG. 11.
  • the method may include transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, where the first TCI state is mapped to the TCI codepoint.
  • the operations of 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a TCI state component 1130 as described with reference to FIG. 11.
  • the method may include transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, where the second TCI state is mapped to the TCI codepoint.
  • the operations of 1515 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed by a TCI state component 1130 as described with reference to FIG. 11.
  • FIG. 16 shows a flowchart illustrating a method 1600 that supports beam selection for aperiodic reference signals in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1600 may be implemented by a network entity or its components as described herein.
  • the operations of the method 1600 may be performed by a network entity as described with reference to FIGs. 1 through 4 and 9 through 12.
  • a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
  • the method may include transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set.
  • the operations of 1605 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed by a reference signal component 1125 as described with reference to FIG. 11.
  • the method may include transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, where the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • the operations of 1610 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by a TCI state component 1130 as described with reference to FIG. 11.
  • a method for wireless communications at a UE comprising: receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message comprising a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal; receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, wherein the first TCI state is mapped to the TCI codepoint; and receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, wherein the second TCI state is mapped to the TCI codepoint.
  • Aspect 2 The method of aspect 1, wherein receiving the control message comprises: receiving, in the control message, an indication of a plurality of TCI codepoints associated with the first aperiodic reference signal and the second aperiodic reference signal, wherein one or more codepoints of the plurality of TCI codepoints are associated with a plurality of TCI states, and wherein the TCI codepoint mapped to the first TCI state and the second TCI state is associated with a codepoint, of the one or more codepoints, having a codepoint ID that satisfies a threshold.
  • Aspect 3 The method of any of aspects 1 through 2, wherein receiving the first aperiodic reference signal via the first CMR set in accordance with the first TCI state comprises: receiving the first aperiodic reference signal via the first CMR set in accordance with the first TCI state based at least in part on the first aperiodic reference signal being scheduled within a time threshold.
  • Aspect 4 The method of any of aspects 1 through 3, wherein receiving the second aperiodic reference signal via the second CMR set in accordance with the second TCI state comprises: receiving the second aperiodic reference signal via the second CMR set in accordance with the second TCI state based at least in part on the second aperiodic reference signal being scheduled within a time threshold.
  • Aspect 5 The method of any of aspects 1 through 4, further comprising: receiving a second control message that indicates an operation mode for the UE, a plurality of default TCI states for the UE, or both, wherein the operation mode comprises a single downlink control information, multi-transmission reception point operation mode.
  • Aspect 6 The method of any of aspects 1 through 5, wherein the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • Aspect 7 The method of aspect 6, wherein the respective values comprise a first entry and a second entry.
  • a method for wireless communications at a UE comprising: receiving a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set; and receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, wherein the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 9 The method of aspect 8, wherein receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set comprises: receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state; and receiving the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, wherein the first TCI state and the second TCI state correspond to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 10 The method of any of aspects 8, wherein receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set comprises: receiving the first aperiodic reference signal via the first CMR set in accordance with a first TCI state; and receiving the second aperiodic reference signal via the second CMR set in accordance with the first TCI state, wherein the first TCI state corresponds to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 11 The method of aspect 10, wherein receiving the first aperiodic reference signal and the second aperiodic reference signal in accordance with the first TCI state comprises: applying a quasi-co-location assumption of the downlink signal, wherein receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set is based at least in part on applying the quasi-co-location assumption.
  • Aspect 12 The method of any of aspects 8 through 11, wherein receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set comprises: receiving the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set based at least in part on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • Aspect 13 The method of any of aspects 8 through 12, further comprising: receiving a second control message that schedules the downlink signal corresponding to the at least one TCI state, wherein the second control message indicates that the downlink signal at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 14 The method of any of aspects 8 through 13, further comprising: receiving a second control message that indicates an operation mode for the UE, a plurality of default TCI states for the UE, or both, wherein the operation mode comprises a single downlink control information, multi-transmission reception point operation mode.
  • Aspect 15 The method of any of aspects 8 through 14, wherein the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • Aspect 16 The method of aspect 15, wherein the respective values comprise a first entry and a second entry.
  • a method for wireless communications at a network entity comprising: transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set, the control message comprising a TCI codepoint associated with the first aperiodic reference signal and the second aperiodic reference signal; transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state, wherein the first TCI state is mapped to the TCI codepoint; and transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, wherein the second TCI state is mapped to the TCI codepoint.
  • Aspect 18 The method of aspect 17, wherein transmitting the control message comprises: transmitting, in the control message, an indication of a plurality of TCI codepoints associated with the first aperiodic reference signal and the second aperiodic reference signal, wherein one or more codepoints of the plurality of TCI codepoints are associated with a plurality of TCI states, and wherein the TCI codepoint mapped to the first TCI state and the second TCI state is associated with a codepoint, of the one or more codepoints, having a codepoint ID that satisfies a threshold.
  • Aspect 19 The method of any of aspects 17 through 18, wherein transmitting the first aperiodic reference signal via the first CMR set in accordance with the first TCI state comprises: transmitting the first aperiodic reference signal via the first CMR set in accordance with the first TCI state based at least in part on the first aperiodic reference signal being scheduled within a time threshold.
  • Aspect 20 The method of any of aspects 17 through 19, wherein transmitting the second aperiodic reference signal via the second CMR set in accordance with the second TCI state comprises: transmitting the second aperiodic reference signal via the second CMR set in accordance with the second TCI state based at least in part on the second aperiodic reference signal being scheduled within a time threshold.
  • Aspect 21 The method of any of aspects 17 through 20, further comprising: transmitting a second control message that indicates an operation mode for a UE, a plurality of default TCI states for the UE, or both, wherein the operation mode comprises a single downlink control information, multi-transmission reception point operation mode.
  • Aspect 22 The method of any of aspects 17 through 21, wherein the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • Aspect 23 The method of aspect 22, wherein the respective values comprise a first entry and a second entry.
  • a method for wireless communications at a network entity comprising: transmitting a control message that schedules a first aperiodic reference signal for a first CMR set and schedules a second aperiodic reference signal for a second CMR set; and transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set, wherein the first aperiodic reference signal and the second aperiodic reference signal are received in accordance with at least one TCI state corresponding to a downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 25 The method of aspect 24, wherein transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set comprises: transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state; and transmitting the second aperiodic reference signal via the second CMR set in accordance with a second TCI state, wherein the first TCI state and the second TCI state correspond to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 26 The method of any of aspects 24 through 25, wherein transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set comprises: transmitting the first aperiodic reference signal via the first CMR set in accordance with a first TCI state; and transmitting the second aperiodic reference signal via the second CMR set in accordance with the first TCI state, wherein the first TCI state corresponds to the downlink signal that at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 27 The method of any of aspects 24 through 26, wherein transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set comprises: transmitting the first aperiodic reference signal via the first CMR set and the second aperiodic reference signal via the second CMR set based at least in part on the first aperiodic reference signal and the second aperiodic reference signal being scheduled within a time threshold.
  • Aspect 28 The method of any of aspects 24 through 27, further comprising: transmitting a second control message that schedules the downlink signal corresponding to the at least one TCI state, wherein the second control message indicates that the downlink signal at least partially overlaps in time with the first CMR set and the second CMR set.
  • Aspect 29 The method of any of aspects 24 through 28, further comprising: transmitting a second control message that indicates an operation mode for a UE, a plurality of default TCI states for the UE, or both, wherein the operation mode comprises a single downlink control information, multi-transmission reception point operation mode.
  • Aspect 30 The method of any of aspects 24 through 29, wherein the first CMR set and the second CMR set are associated with respective values in a non-zero power resource set list or a synchronization signal block set list.
  • Aspect 31 An apparatus for wireless communications at a UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 1 through 7.
  • Aspect 32 An apparatus for wireless communications at a UE, comprising at least one means for performing a method of any of aspects 1 through 7.
  • Aspect 33 A non-transitory computer-readable medium storing code for wireless communications at a UE, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 7.
  • Aspect 34 An apparatus for wireless communications at a UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 8 through 16.
  • Aspect 35 An apparatus for wireless communications at a UE, comprising at least one means for performing a method of any of aspects 8 through 16.
  • Aspect 36 A non-transitory computer-readable medium storing code for wireless communications at a UE, the code comprising instructions executable by a processor to perform a method of any of aspects 8 through 16.
  • Aspect 37 An apparatus for wireless communications at a network entity, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 17 through 23.
  • Aspect 38 An apparatus for wireless communications at a network entity, comprising at least one means for performing a method of any of aspects 17 through 23.
  • Aspect 39 A non-transitory computer-readable medium storing code for wireless communications at a network entity, the code comprising instructions executable by a processor to perform a method of any of aspects 17 through 23.
  • Aspect 40 An apparatus for wireless communications at a network entity, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 24 through 30.
  • Aspect 41 An apparatus for wireless communications at a network entity, comprising at least one means for performing a method of any of aspects 24 through 30.
  • Aspect 42 A non-transitory computer-readable medium storing code for wireless communications at a network entity, the code comprising instructions executable by a processor to perform a method of any of aspects 24 through 30.
  • LTE, LTE-A, LTE-A Pro, or NR 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 networks.
  • the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
  • UMB Ultra Mobile Broadband
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Institute of Electrical and Electronics Engineers
  • WiMAX IEEE 802.16
  • IEEE 802.20 Flash-OFDM
  • 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.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any 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 may 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 may be accessed by a general-purpose or special-purpose computer.
  • non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (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 may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable 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.
  • determining encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” can include receiving (such as receiving information) , accessing (such as accessing data in a memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing and other such similar actions.

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Abstract

La présente invention concerne des procédés, des systèmes et des dispositifs de communication sans fil. Un système de communication sans fil peut prendre en charge des techniques de sélection de faisceaux dans des signaux de référence apériodiques. Par exemple, un équipement utilisateur (UE) peut recevoir un message de commande planifiant un ou plusieurs signaux de référence apériodiques dans deux ensembles de ressources de mesure de canaux (CMR). Dans certains cas, l'UE peut recevoir le premier signal de référence apériodique par l'intermédiaire du premier ensemble de CMR au moyen d'un premier état de TCI et le second signal de référence apériodique par l'intermédiaire du second ensemble de CMR au moyen d'un second état de TCI. Dans certains cas, les états de TCI peuvent être mappés sur un point de code de TCI indiqué dans le message de commande. En variante, les états de TCI peuvent être associés à un signal de liaison descendante qui chevauche les ensembles de CMR. Dans certains cas, les premier et second états de TCI peuvent être identiques et peuvent être associés au signal de liaison descendante qui chevauche les ensembles de CMR.
PCT/CN2022/086017 2022-04-11 2022-04-11 Sélection de faisceaux pour signaux de référence apériodiques WO2023197094A1 (fr)

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WO2022024079A1 (fr) * 2020-07-31 2022-02-03 Telefonaktiebolaget Lm Ericsson (Publ) Indication d'états tci pour un csi-rs apériodique à faible surdébit de configuration

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WO2022006700A1 (fr) * 2020-07-06 2022-01-13 Zte Corporation Détermination d'informations d'état de canal dans des systèmes à points d'émission et réception multiples
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