WO2023245471A1 - Message de déclenchement d'accès aléatoire simultané - Google Patents

Message de déclenchement d'accès aléatoire simultané Download PDF

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Publication number
WO2023245471A1
WO2023245471A1 PCT/CN2022/100318 CN2022100318W WO2023245471A1 WO 2023245471 A1 WO2023245471 A1 WO 2023245471A1 CN 2022100318 W CN2022100318 W CN 2022100318W WO 2023245471 A1 WO2023245471 A1 WO 2023245471A1
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WIPO (PCT)
Prior art keywords
random access
message
parameters
access message
transmitting
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PCT/CN2022/100318
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English (en)
Inventor
Fang Yuan
Wooseok Nam
Yan Zhou
Tao Luo
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Qualcomm Incorporated
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Priority to PCT/CN2022/100318 priority Critical patent/WO2023245471A1/fr
Publication of WO2023245471A1 publication Critical patent/WO2023245471A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • the following relates to wireless communications, including concurrent random access triggering message.
  • 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
  • Some wireless communications systems may support multi-transmission reception point (TRP) operation and concurrent uplink transmissions, such as concurrent physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) transmissions.
  • TRP transmission reception point
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • the described techniques relate to improved methods, systems, devices, and apparatuses that enable a UE to perform transmission of two or more random access messages that at least partially overlap in time (e.g., concurrently or simultaneously) in multiple transmission reception point (mTRP) operations.
  • a network entity e.g., TRP, base station
  • TRP transmission reception point
  • the UE may transmit concurrent random access messages in different frequencies (e.g., using a frequency division multiplexing (FDM) technique) or using different beams or transmission configuration indicator (TCI) states (e.g., different spatial layers for each TRP) , or both.
  • FDM frequency division multiplexing
  • TCI transmission configuration indicator
  • the UE may efficiently establish or re-establish connection with one or more TRPs in an mTRP communication scheme.
  • a method for wireless communications at a UE may include receiving one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE, receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, and transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • 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 one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE, receive a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, and transmit, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the apparatus may include means for receiving one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE, means for receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, and means for transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • 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 one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE, receive a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, and transmit, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving an indication of a set of multiple timing advances associated with the first and second TCI states, where the first random access message may be transmitted in accordance with a first timing advance of the set of multiple timing advances and the second random access message may be transmitted in accordance with a second timing advance of the set of multiple timing advances.
  • receiving the second message may include operations, features, means, or instructions for receiving a downlink control channel, the downlink control channel including a first field indicating the first set of parameters and a second field indicating the second set of parameters, where the first field, the second field, or both include a random access mask index field, a preamble index field, a block index field, or any combination thereof.
  • receiving the second message may include operations, features, means, or instructions for receiving a downlink control channel including a field indicating both the first set of parameters and the second set of parameters.
  • transmitting the first random access message and the second random access message may include operations, features, means, or instructions for transmitting the first random access message and the second random access message in a same random access occasion, where the first random access message may be associated with a first index and the second random access message may be associated with a second index different from the first index, where the first index, the second index, or both include a block index, a preamble index, or any combination thereof.
  • transmitting the first random access message and the second random access message may include operations, features, means, or instructions for transmitting the first random access message in a first random access occasion via a first set of frequency resources and transmitting the second random access message in a second random access occasion via a second set of frequency resources, where the first and second sets of frequency resources may be different.
  • the first TCI state may be associated with a first synchronization signal block (SSB) and the second TCI state may be associated with a second SSB.
  • SSB synchronization signal block
  • the first SSB and the second SSB may be associated with different identifiers, different TCI groups, different timing advances, or any combination thereof.
  • receiving the second message may include operations, features, means, or instructions for receiving a layer 2 or a layer 3 message that includes a first random access indication and a second random access indication.
  • receiving the second message may include operations, features, means, or instructions for receiving a first indication of a first set of multiple random access occasions corresponding to the transmission of the first random access message and associated with a first channel state indication reference signal (CSI-RS) index and receiving a second indication of a second set of multiple random access occasions corresponding to the transmission of the second random access message and associated with a second CSI-RS index.
  • CSI-RS channel state indication reference signal
  • transmitting the first random access message and the second random access message may include operations, features, means, or instructions for transmitting the first random access message and the second random access message includes in a same random access occasion, where the first random access message may be associated with a first preamble index different from a second preamble index associated with the second random access message.
  • transmitting the first random access message and the second random access message may include operations, features, means, or instructions for transmitting the first random access message in a first random access occasion via a first set of frequency resources and transmitting the second random access message in a second random access occasion via a second set of frequency resources.
  • the first TCI state may be associated with a first CSI-RS index and the second TCI state may be associated with a second CSI-RS index.
  • the first CSI-RS index may be associated with a first TCI group or a first timing advance group and the second CSI-RS index may be associated with a second TCI group or a second timing advance group.
  • the first set of parameters and the second set of parameters may be associated with frequency division multiplexing (FDM) .
  • FDM frequency division multiplexing
  • the first set of parameters and the second set of parameters may be associated with space division multiplexing (SDM) .
  • SDM space division multiplexing
  • a method for wireless communications at a network entity may include transmitting a first message indicating a first TCI state for a UE and indicating a second TCI state for the UE and transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • 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 first message indicating a first TCI state for a UE and indicating a second TCI state for the UE and transmit a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the apparatus may include means for transmitting a first message indicating a first TCI state for a UE and indicating a second TCI state for the UE and means for transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • 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 first message indicating a first TCI state for a UE and indicating a second TCI state for the UE and transmit a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting an indication of a set of multiple timing advances associated with the first and second TCI states, where the first random access message may be associated with a first timing advance of the set of multiple timing advances and the second random access message associated with a second timing advance of the set of multiple timing advances.
  • transmitting the second message may include operations, features, means, or instructions for transmitting a downlink control channel, the downlink control channel including a first field indicating the first set of parameters and a second field indicating the second set of parameters.
  • the first field, the second field, or both include a random access mask index field, a preamble index field, a block index field, or any combination thereof.
  • transmitting the second message may include operations, features, means, or instructions for transmitting a downlink control channel including a field indicating both the first set of parameters and the second set of parameters.
  • transmitting the second message may include operations, features, means, or instructions for transmitting a layer 2 or a layer 3 message that includes a first random access indication and a second random access indication.
  • transmitting the second message may include operations, features, means, or instructions for transmitting a first indication of a first set of multiple random access occasions corresponding to the transmission of the first random access message and associated with a first CSI-RS index and transmitting a second indication of a second set of multiple random access occasions corresponding to the transmission of the second random access message and associated with a second CSI-RS index.
  • the first set of parameters and the second set of parameters may be associated with FDM.
  • the first set of parameters and the second set of parameters may be associated with SDM.
  • FIG. 1 illustrates an example of a wireless communications system that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIG. 2 illustrates an example of a communications system that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIG. 3 illustrates an example of a process flow that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIGs. 4 and 5 show block diagrams of devices that support concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIG. 6 shows a block diagram of a communications manager that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIG. 7 shows a diagram of a system including a device that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIGs. 8 and 9 show block diagrams of devices that support concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIG. 10 shows a block diagram of a communications manager that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIG. 11 shows a diagram of a system including a device that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • FIGs. 12 through 16 show flowcharts illustrating methods that support concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • a user equipment may support concurrent (e.g., simultaneous, or at least partially overlapping in time) uplink transmissions in a component carrier (CC) , carrier, subcarrier, frequency band, etc.
  • the UE may support multiple transmission reception point (mTRP) communication in which the UE may transmit two uplink messages concurrently to two different TRPs using two separate antenna panels (e.g., separate active antenna groups) .
  • mTRP transmission reception point
  • the UE may also support multiple timing advances for multiple downlink control information (mDCI) in mTRP communications.
  • mDCI downlink control information
  • the UE may not support concurrent random access messages in mTRP mDCI scenarios (e.g., random access messages to two different TRPs) .
  • the UE may experience increased latency in establishing a connection with multiple TRPs. For example, if the UE loses connection with multiple TRPs, the UE may be slow to reestablish connection with multiple TRPs. For example, the UE may transmit a single random access message at a time, and therefore may establish or re-establish connectivity with a single TRP at a time.
  • a network entity may indicate multiple timing advances (e.g., one for each TRP) and may trigger the UE to transmit multiple concurrent random access messages to multiple different TRPs.
  • the network entity may trigger concurrent random access messages by transmitting a control message (e.g., a physical downlink control channel (PDCCH) , downlink control information (DCI) , a medium access control-control element (MAC-CE) , or a radio resource control (RRC) message) .
  • a control message e.g., a physical downlink control channel (PDCCH) , downlink control information (DCI) , a medium access control-control element (MAC-CE) , or a radio resource control (RRC) message
  • the network entity may trigger concurrent random access messages via DCI as part of connection establishment or re-establishment with multiple TRPs, such as if a current connection between the UE and one or more TRPs is unstable or lost.
  • the UE may transmit concurrent random access messages in different frequencies (e.g., using a frequency division multiplexing (FDM) technique) or using different beams or transmission configuration indicator (TCI) states (e.g., different spatial layers for each TRP) , or both.
  • FDM frequency division multiplexing
  • TCI transmission configuration indicator
  • the UE may efficiently establish or re-establish connection with one or more TRPs in an mTRP communication scheme.
  • aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are additionally described in the context of an additional wireless communications system and 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 concurrent random access triggering message.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports concurrent random access triggering message 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 capable of supporting communications 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 via 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 via 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 170 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 170.
  • 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 via 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.
  • an access network (AN) or RAN may include communications between access nodes (e.g., an IAB donor) , IAB nodes 104, and one or more UEs 115.
  • the IAB donor may facilitate connection between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130) . That is, an IAB donor may refer to a RAN node with a wired or wireless connection to core network 130.
  • the IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170) , in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link) .
  • IAB donor and IAB nodes 104 may communicate via an F1 interface according to a protocol that defines signaling messages (e.g., an F1 AP protocol) .
  • the CU 160 may communicate with the core network via an interface, which may be an example of a portion of backhaul link, and may communicate with other CUs 160 (e.g., a CU 160 associated with an alternative IAB donor) via an Xn-C interface, which may be an example of a portion of a backhaul link.
  • An IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UEs 115, wireless self-backhauling capabilities) .
  • a DU 165 may act as a distributed scheduling node towards child nodes associated with the IAB node 104, and the IAB-MT may act as a scheduled node towards parent nodes associated with the IAB node 104. That is, an IAB donor may be referred to as a parent node in communication with one or more child nodes (e.g., an IAB donor may relay transmissions for UEs through one or more other IAB nodes 104) .
  • an IAB node 104 may also be referred to as a parent node or a child node to other IAB nodes 104, depending on the relay chain or configuration of the AN. Therefore, the IAB-MT entity of IAB nodes 104 may provide a Uu interface for a child IAB node 104 to receive signaling from a parent IAB node 104, and the DU interface (e.g., DUs 165) may provide a Uu interface for a parent IAB node 104 to signal to a child IAB node 104 or UE 115.
  • the DU interface e.g., DUs 165
  • IAB node 104 may be referred to as a parent node that supports communications for a child IAB node, or referred to as a child IAB node associated with an IAB donor, or both.
  • the IAB donor may include a CU 160 with a wired or wireless connection (e.g., a backhaul communication link 120) to the core network 130 and may act as parent node to IAB nodes 104.
  • the DU 165 of IAB donor may relay transmissions to UEs 115 through IAB nodes 104, or may directly signal transmissions to a UE 115, or both.
  • the CU 160 of IAB donor may signal communication link establishment via an F1 interface to IAB nodes 104, and the IAB nodes 104 may schedule transmissions (e.g., transmissions to the UEs 115 relayed from the IAB donor) through the DUs 165. That is, data may be relayed to and from IAB nodes 104 via signaling via an NR Uu interface to MT of the IAB node 104. Communications with IAB node 104 may be scheduled by a DU 165 of IAB donor and communications with IAB node 104 may be scheduled by DU 165 of IAB node 104.
  • one or more components of the disaggregated RAN architecture may be configured to support concurrent random access triggering message 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) using resources associated with 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
  • a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers.
  • a carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute RF channel number (EARFCN) ) and may be identified according to a channel raster for discovery by the UEs 115.
  • E-UTRA evolved universal mobile telecommunication system terrestrial radio access
  • a carrier may be operated in a standalone mode, in which case initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode, in which case a connection is anchored using a different carrier (e.g., of the same or a different radio access technology) .
  • the communication links 125 shown in the wireless communications system 100 may include downlink transmissions (e.g., forward link transmissions) from a network entity 105 to a UE 115, uplink transmissions (e.g., return link transmissions) from a UE 115 to a network entity 105, or both, among other configurations of transmissions.
  • Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
  • a carrier may be associated with a particular bandwidth of the RF spectrum and, in some examples, the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100.
  • the carrier bandwidth may be one of a set of bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) .
  • Devices of the wireless communications system 100 e.g., the network entities 105, the UEs 115, or both
  • the wireless communications system 100 may include network entities 105 or UEs 115 that support concurrent communications using carriers associated with multiple carrier bandwidths.
  • each served UE 115 may be configured for operating using portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
  • Signal waveforms transmitted via 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 a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication.
  • 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 associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with 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 for communication using a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed for signaling via 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
  • One or more control regions 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 provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof.
  • the term “cell” may refer to a logical communication entity used for communication with a network entity 105 (e.g., using a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) , or others) .
  • a cell also may refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) over which the logical communication entity operates.
  • Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the network entity 105.
  • a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with coverage areas 110, among other examples.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell.
  • a small cell may be associated with a lower-powered network entity 105 (e.g., a lower-powered base station 140) , as compared with a macro cell, and a small cell may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells.
  • Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) .
  • a network entity 105 may support one or multiple cells and may also support communications via the one or more cells using one or multiple component carriers.
  • a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.
  • protocol types e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB)
  • NB-IoT narrowband IoT
  • eMBB enhanced mobile broadband
  • 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 configured to support communicating directly with other UEs 115 via 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 (e.g., scheduled by) the network entity 105.
  • one or more UEs 115 of 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 an 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. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications 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 using 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 using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) .
  • Operations using 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 at diverse geographic locations.
  • a network entity 105 may include 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 include 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 along 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 be a packet-based network that operates according to a layered protocol stack.
  • communications at the bearer or PDCP layer may be IP-based.
  • An RLC layer may perform packet segmentation and reassembly to communicate via logical channels.
  • a MAC layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency.
  • an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data.
  • a PHY layer may map transport channels to physical channels.
  • a UE 115 may support concurrent uplink transmissions (e.g., in a carrier, subcarrier, component carrier (CC) , frequency band, subband) .
  • the UE 115 may support mTRP communication and may transmit multiple uplink messages concurrently.
  • the UE 115 may transmit two uplink messages concurrently using two separate antenna panels (e.g., separate active antenna groups) to two different TRPs (e.g., RUs 170, network entities 105, base stations 140) .
  • the UE 115 may also support multiple timing advances for mDCI in mTRP communications.
  • the UE 115 may support random access transmissions that at least partially overlap in time (e.g., concurrent) to reduce latency of uplink synchronization for mTRP operations.
  • a network entity 105 may indicate multiple TAs (e.g., one for each TRP) and may trigger the UE 115 to transmit two concurrent random access messages to two different TRPs.
  • the network entity 105 may trigger concurrent random access messages by transmitting a control message.
  • the network entity 105 may trigger concurrent random access message transmission via DCI as part of connection establishment or re-establishment with multiple TRPs, such as if a current connection between the UE 115 and one or more TRPs is unstable or lost.
  • the UE 115 may transmit concurrent random access messages in different frequencies (e.g., using a frequency division multiplexing (FDM) technique) or using different beams or transmission configuration indicator (TCI) states (e.g., different spatial layers for each TRP) , or both.
  • FDM frequency division multiplexing
  • TCI transmission configuration indicator
  • the UE 115 may efficiently establish or re-establish connection with one or more TRPs in an mTRP communication scheme.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • wireless communications system 200 may implement aspects of wireless communications system 100.
  • wireless communications system 200 may include UE 115-a and network entities 105, which may be examples of a UE 115 and a network entity 105, respectively, as described with reference to FIG. 1.
  • network entity 105-b and network entity 105-c may be examples of TRPs (e.g., base stations 140, RUs 170, network entities 105) in an mTRP communication scheme and network entity 105-b and network entity 105-c may each be associated with a different TCI state.
  • TRPs e.g., base stations 140, RUs 170, network entities 105
  • UE 115-a may transmit concurrent uplink transmissions, such as physical uplink shared channel (PUSCH) or physical uplink control channel (PUCCH) transmissions (e.g., in a CC) .
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • UE 115-a may use different TCI states to perform concurrent uplink transmissions.
  • UE 115-a may use TCI states to transmit concurrent (e.g., at least partially overlapping in time) random access messages (e.g., PRACH) to multiple network entities 105, where a TCI state may be associated with each network entity 105.
  • PRACH random access messages
  • a TCI state may be associated with an antenna panel (e.g., a group of activated antenna elements) at UE 115-a, which, once activated, may form a beam (e.g., a transmission beam) at the UE 115-a used to steer communications in a given direction.
  • network entities 105-b and 105-c may also be associated with different TAs for multi-DCI based multi-TRP communications.
  • Network entity 105-a may trigger UE 115-a to transmit concurrent random access messages 220, such as a first random access message for network entity 105-b and a second random access message for network entity 105-c, to reduce latency of uplink synchronization in multi-TRP communications when UE 115-a is enabled with multi-TRP communications (e.g., mDCI based multi-TRP and multi-TA) .
  • network entity 105-a may transmit a message 205 to UE 115-a to indicate a first TCI state (e.g., associated with network entity 105-b) and a second TCI state (e.g., associated with network entity 105-c) .
  • Network entity 105-a may also transmit a triggering message 210 (e.g., a second message) to UE 115-a.
  • the triggering message 210 may indicate a set of parameters for each random access message 220. For example, a first set of parameters may be for random access message 220-a and a second set of parameters may be for random access message 220-b.
  • the triggering message 210 may be a downlink control channel (e.g., a physical downlink control channel (PDCCH) ) such as a DCI message that triggers UE 115-a to send two concurrent random access messages 220-a and 220-b.
  • PDCCH physical downlink control channel
  • the triggering message 210 may be an example of triggering message 210-a and may have one field 215-a, which may be associated with both random access messages 220.
  • UE 115-a may be configured (e.g., by RRC) such that the field 215-a indicates both the first set of parameters for the random access message 220-a and the second set of parameters for the random access message 220-b.
  • the triggering message 210 may be an example of triggering message 210-b and may have a first field 215-b and a second field 215-c, where each field 215 indicates a respective set of parameters for each random access message 220.
  • Fields 215 may include a random access mask index field, a preamble index field, a block index field, or any combination thereof.
  • network entity 105-a may transmit a message to UE 115-a that includes a mask index field, which indicates a random access occasion (e.g., time resources, frequency resources, or both) for each random access transmission (e.g., if the value of the preamble index field is not zero) .
  • the random access occasions may be associated with a block index (e.g., a synchronization signal block (SSB) index or physical broadcast channel (PBCH) index) indicated by a block index field.
  • SSB synchronization signal block
  • PBCH physical broadcast channel
  • UE 115-a may transmit two or more random access messages 220 concurrently (e.g., at least partially overlapping in time) using the sets of parameters indicated in the triggering message 210. For example, UE 115-a may transmit random access message 220-a to network entity 105-b according to a first TCI state or a first SSB index and random access message 220-b to network entity 105-c according to a second TCI state or a second SSB index.
  • the first set of parameters associated with random access message 220-a and the second set of parameters associated with random access message 220-b may be associated with space division multiplexing (SDM) .
  • SDM space division multiplexing
  • the first set of parameters may indicate UE 115-a to use a beam 225-a for random access message 220-a and a beam 225-b for random access message 220-b.
  • the first set of parameters and the second set of parameters may be associated with FDM.
  • the first set of parameters may indicate UE 115-a to use frequency resources 230-a for random access message 220-a and frequency resources 230-b for random access message 220-b.
  • UE 115-a may transmit the concurrent random access messages 220 in the same random access occasion, where random access message 220-a may be associated with a first index and random access message 220-b may be associated with a second index (e.g., different from the first index) .
  • the first index, second index, or both may be a block index, preamble index, or any combination thereof.
  • UE 115-a may transmit random access messages 220 in different random access occasions. For example, UE 115-a may transmit random access message 220-a in a first random access occasion via a first set of frequency resources (e.g., in frequency resources 230-a) and random access message 220-b in a second random access occasion via a second set of frequency resources (e.g., in frequency resources 230-b) different from the first set of frequency resources.
  • the first TCI state (e.g., associated with random access message 220-a) may be associated with a first SSB and the second TCI state may be associated with a second SSB.
  • the first SSB and the second SSB may be associated with different identifiers (e.g., physical cell identifiers) , different transmission configuration indicator groups, different timing advances (e.g., timing advance groups) , or any combination thereof, which may be associated with the different network entities 105.
  • identifiers e.g., physical cell identifiers
  • transmission configuration indicator groups e.g., different transmission configuration indicator groups
  • timing advances e.g., timing advance groups
  • triggering message 210 may be a higher layer message (e.g., layer 2 or layer 3) that includes a first random access indication and a second random access indication.
  • the first indication may indicate a first set of random access occasions corresponding to random access message 220-a and associated with a first channel state indication reference signal (CSI-RS) index
  • the second indication may indicate a second set of random access occasions corresponding to random access message 220-b and associated with a second CSI-RS index.
  • CSI-RS channel state indication reference signal
  • higher layer triggering message 210 may include a preamble index field with a first value, and when the preamble index field is a value other than zero, a second value (e.g., associated with a random access occasion list) may indicate a list of random access occasions corresponding to each random access message 220, where each random access occasion may be associated with a CSI-RS index.
  • a second value e.g., associated with a random access occasion list
  • the UE 115-a may transmit random access messages 220 in the same random access occasion or in different random access occasions.
  • UE 115-a may transmit random access messages 220 in the same random access occasion where each random access message 220 may be associated with a different CSI-RS index, preamble index, or both.
  • the same random access occasion may be associated with different CSI-RS indexes or different preamble indexes.
  • UE 115-a may transmit random access message 220-a in a first random access occasion via a first set of frequency resources (e.g., in frequency resources 230-a) and random access message 220-b in a second random access occasion via a second set of frequency resource (e.g., in frequency resources 230-b) .
  • each TCI state may be associated with a different CSI-RS index
  • each CSI-RS index may be associated with a different TCI group or timing advance group where each group may be associated with a different network entity 105.
  • FIG. 3 illustrates an example of a process flow 300 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the process flow 300 may implement various aspects of the present disclosure described with reference to FIGs. 1 and 2.
  • the process flow 300 may include UE 115-b and network entities 105-d, 105-e, and 105-f which may be examples of UE 115 and network entities 105 as described with reference to FIGs. 1 and 2.
  • the operations described may be performed in different orders or at different times. Some operations may also be left out of the process flow 300, or other operations may be added. Although UE 115-b and network entities 105-d, 105-e, and 105-f are shown performing the operations of the process flow 300, some aspects of the operations may also be performed by other elements of the process flow 300 or by elements that are not depicted in the process flow, or any combination thereof.
  • network entity 105-d may transmit and UE 115-b may receive an indication of a plurality of timing advances.
  • the timing advances may be associated with the TCI states corresponding to network entities 105-e and 105-f.
  • network entity 105-e may be associated with a first TCI state and network entity 105-f may be associated with a second TCI state.
  • network entity 105-d may transmit and UE 115-b may receive one or more first messages (e.g., message 205 as described with reference to FIG. 2) which may indicate the first TCI state and the second TCI state.
  • first messages e.g., message 205 as described with reference to FIG. 2
  • network entity 105-d may transmit and UE 115-b may receive a second message indicating a first set of parameters for transmission of a first random access message (e.g., random access message 220-a) in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message (e.g., random access message 220-b) in accordance with the second TCI state.
  • the second message transmitted at 315 may be an example of the triggering message 210, as described with reference to FIG. 2.
  • UE 115-b receiving the second message at 315 may include receiving a layer 2 or a layer 3 message, as described with reference to FIG. 2.
  • UE 115-b may transmit, and network entity 105-e may receive, the first random access message.
  • the first random access message may be an example of random access message 220-a and may be transmitted as described with reference to FIG. 2.
  • UE 115-b may transmit the first random access message using the first set of parameters in accordance with the first TCI state.
  • UE 115-b may transmit the first random access message in accordance with a first timing advance of the plurality of timing advances.
  • UE 115-b may transmit, and network entity 105-f may receive, the second random access message.
  • the second random access message may be an example of random access message 220-b and may be transmitted as described with reference to FIG. 2.
  • UE 115-b may transmit the second random access message using the second set of parameters in accordance with the second TCI state, and the first random access message and the second random access message may at least partially overlap in time (e.g., the UE 115-b may transmit the two random access messages concurrently) .
  • UE 115-b may transmit the second random access message in accordance with a second timing advance of the plurality of timing advances.
  • FIG. 4 shows a block diagram 400 of a device 405 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the device 405 may be an example of aspects of a UE 115 as described herein.
  • the device 405 may include a receiver 410, a transmitter 415, and a communications manager 420.
  • the device 405 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 410 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 concurrent random access triggering message) . Information may be passed on to other components of the device 405.
  • the receiver 410 may utilize a single antenna or a set of multiple antennas.
  • the transmitter 415 may provide a means for transmitting signals generated by other components of the device 405.
  • the transmitter 415 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 concurrent random access triggering message) .
  • the transmitter 415 may be co-located with a receiver 410 in a transceiver module.
  • the transmitter 415 may utilize a single antenna or a set of multiple antennas.
  • the communications manager 420, the receiver 410, the transmitter 415, or various combinations thereof or various components thereof may be examples of means for performing various aspects of concurrent random access triggering message as described herein.
  • the communications manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
  • the communications manager 420, the receiver 410, the transmitter 415, 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 420, the receiver 410, the transmitter 415, 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 420, the receiver 410, the transmitter 415, 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 420, the receiver 410, the transmitter 415, 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 420 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 410, the transmitter 415, or both.
  • the communications manager 420 may receive information from the receiver 410, send information to the transmitter 415, or be integrated in combination with the receiver 410, the transmitter 415, or both to obtain information, output information, or perform various other operations as described herein.
  • the communications manager 420 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the communications manager 420 may be configured as or otherwise support a means for receiving one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE.
  • the communications manager 420 may be configured as or otherwise support a means for receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state.
  • the communications manager 420 may be configured as or otherwise support a means for transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the device 405 e.g., a processor controlling or otherwise coupled with the receiver 410, the transmitter 415, the communications manager 420, or a combination thereof
  • the device 405 may support techniques for mor efficient utilization of communication resources.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the device 505 may be an example of aspects of a device 405 or 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 concurrent random access triggering message) . 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 concurrent random access triggering message) .
  • 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 device 505, or various components thereof may be an example of means for performing various aspects of concurrent random access triggering message as described herein.
  • the communications manager 520 may include a TCI state receiver 525, a random access parameter receiver 530, a random access message transmitter 535, or any combination thereof.
  • the communications manager 520 may be an example of aspects of a communications manager 420 as described herein.
  • the communications manager 520, 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 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 TCI state receiver 525 may be configured as or otherwise support a means for receiving one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE.
  • the random access parameter receiver 530 may be configured as or otherwise support a means for receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state.
  • the random access message transmitter 535 may be configured as or otherwise support a means for transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • FIG. 6 shows a block diagram 600 of a communications manager 620 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the communications manager 620 may be an example of aspects of a communications manager 420, a communications manager 520, or both, as described herein.
  • the communications manager 620, or various components thereof, may be an example of means for performing various aspects of concurrent random access triggering message as described herein.
  • the communications manager 620 may include a TCI state receiver 625, a random access parameter receiver 630, a random access message transmitter 635, a timing advance receiver 640, a downlink control channel receiver 645, a downlink control channel receiver 650, a random access message transmitter 655, 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 620 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the TCI state receiver 625 may be configured as or otherwise support a means for receiving one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE.
  • the random access parameter receiver 630 may be configured as or otherwise support a means for receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state.
  • the random access message transmitter 635 may be configured as or otherwise support a means for transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the timing advance receiver 640 may be configured as or otherwise support a means for receiving an indication of a set of multiple timing advances associated with the first and second TCI states, where the first random access message is transmitted in accordance with a first timing advance of the set of multiple timing advances and the second random access message is transmitted in accordance with a second timing advance of the set of multiple timing advances.
  • the downlink control channel receiver 645 may be configured as or otherwise support a means for receiving a downlink control channel, the downlink control channel including a first field indicating the first set of parameters and a second field indicating the second set of parameters, where the first field, the second field, or both include a random access mask index field, a preamble index field, a block index field, or any combination thereof.
  • the downlink control channel receiver 650 may be configured as or otherwise support a means for receiving a downlink control channel including a field indicating both the first set of parameters and the second set of parameters.
  • the random access message transmitter 655 may be configured as or otherwise support a means for transmitting the first random access message and the second random access message in a same random access occasion, where the first random access message is associated with a first index and the second random access message is associated with a second index different from the first index, where the first index, the second index, or both include a block index, a preamble index, or any combination thereof.
  • the random access message transmitter 655 may be configured as or otherwise support a means for transmitting the first random access message in a first random access occasion via a first set of frequency resources. In some examples, to support transmitting the first random access message and the second random access message, the random access message transmitter 655 may be configured as or otherwise support a means for transmitting the second random access message in a second random access occasion via a second set of frequency resources, where the first and second sets of frequency resources are different.
  • the first TCI state is associated with a first SSB and the second TCI state is associated with a second SSB.
  • the first SSB and the second SSB are associated with different identifiers, different TCI groups, different timing advances, or any combination thereof.
  • the random access parameter receiver 630 may be configured as or otherwise support a means for receiving a layer 2 or a layer 3 message that includes a first random access indication and a second random access indication.
  • the random access parameter receiver 630 may be configured as or otherwise support a means for receiving a first indication of a first set of multiple random access occasions corresponding to the transmission of the first random access message and associated with a first CSI-RS index. In some examples, to support receiving the second message, the random access parameter receiver 630 may be configured as or otherwise support a means for receiving a second indication of a second set of multiple random access occasions corresponding to the transmission of the second random access message and associated with a second CSI-RS index.
  • the random access message transmitter 655 may be configured as or otherwise support a means for transmitting the first random access message and the second random access message includes in a same random access occasion, where the first random access message is associated with a first preamble index different from a second preamble index associated with the second random access message.
  • the random access message transmitter 655 may be configured as or otherwise support a means for transmitting the first random access message in a first random access occasion via a first set of frequency resources. In some examples, to support transmitting the first random access message and the second random access message, the random access message transmitter 655 may be configured as or otherwise support a means for transmitting the second random access message in a second random access occasion via a second set of frequency resources.
  • the first TCI state is associated with a first CSI-RS index and the second TCI state is associated with a second CSI-RS index.
  • the first CSI-RS index is associated with a first TCI group or a first timing advance group and the second CSI-RS index is associated with a second TCI group or a second timing advance group.
  • the first set of parameters and the second set of parameters are associated with FDM.
  • the first set of parameters and the second set of parameters are associated with SDM.
  • FIG. 7 shows a diagram of a system 700 including a device 705 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the device 705 may be an example of or include the components of a device 405, a device 505, or a UE 115 as described herein.
  • the device 705 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof.
  • the device 705 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 720, an input/output (I/O) controller 710, a transceiver 715, an antenna 725, a memory 730, code 735, and a processor 740. 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 745) .
  • buses e
  • the I/O controller 710 may manage input and output signals for the device 705.
  • the I/O controller 710 may also manage peripherals not integrated into the device 705.
  • the I/O controller 710 may represent a physical connection or port to an external peripheral.
  • the I/O controller 710 may utilize an operating system such as or another known operating system.
  • the I/O controller 710 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 710 may be implemented as part of a processor, such as the processor 740.
  • a user may interact with the device 705 via the I/O controller 710 or via hardware components controlled by the I/O controller 710.
  • the device 705 may include a single antenna 725. However, in some other cases, the device 705 may have more than one antenna 725, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 715 may communicate bi-directionally, via the one or more antennas 725, wired, or wireless links as described herein.
  • the transceiver 715 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 715 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 725 for transmission, and to demodulate packets received from the one or more antennas 725.
  • the transceiver 715 may be an example of a transmitter 415, a transmitter 515, a receiver 410, a receiver 510, or any combination thereof or component thereof, as described herein.
  • the memory 730 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 730 may store computer-readable, computer-executable code 735 including instructions that, when executed by the processor 740, cause the device 705 to perform various functions described herein.
  • the code 735 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code 735 may not be directly executable by the processor 740 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 730 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 740 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 740 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 740.
  • the processor 740 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 730) to cause the device 705 to perform various functions (e.g., functions or tasks supporting concurrent random access triggering message) .
  • the device 705 or a component of the device 705 may include a processor 740 and memory 730 coupled with or to the processor 740, the processor 740 and memory 730 configured to perform various functions described herein.
  • the communications manager 720 may support wireless communications at a UE in accordance with examples as disclosed herein.
  • the communications manager 720 may be configured as or otherwise support a means for receiving one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE.
  • the communications manager 720 may be configured as or otherwise support a means for receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state.
  • the communications manager 720 may be configured as or otherwise support a means for transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the device 705 may support techniques for improved communication reliability, improved coordination between devices, and more efficient utilization of communication resources.
  • the communications manager 720 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 715, the one or more antennas 725, or any combination thereof.
  • the communications manager 720 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 720 may be supported by or performed by the processor 740, the memory 730, the code 735, or any combination thereof.
  • the code 735 may include instructions executable by the processor 740 to cause the device 705 to perform various aspects of concurrent random access triggering message as described herein, or the processor 740 and the memory 730 may be otherwise configured to perform or support such operations.
  • FIG. 8 shows a block diagram 800 of a device 805 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the device 805 may be an example of aspects of a network entity 105 as described herein.
  • the device 805 may include a receiver 810, a transmitter 815, and a communications manager 820.
  • the device 805 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 810 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 805.
  • the receiver 810 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 810 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 815 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 805.
  • the transmitter 815 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 815 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 815 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 815 and the receiver 810 may be co-located in a transceiver, which may include or be coupled with a modem.
  • the communications manager 820, the receiver 810, the transmitter 815, or various combinations thereof or various components thereof may be examples of means for performing various aspects of concurrent random access triggering message as described herein.
  • the communications manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
  • the communications manager 820, the receiver 810, the transmitter 815, 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 820, the receiver 810, the transmitter 815, 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 820, the receiver 810, the transmitter 815, 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 820, the receiver 810, the transmitter 815, 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 820 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both.
  • the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
  • the communications manager 820 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the communications manager 820 may be configured as or otherwise support a means for transmitting a first message indicating a first TCI state for a UE and indicating a second TCI state for the UE.
  • the communications manager 820 may be configured as or otherwise support a means for transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the device 805 e.g., a processor controlling or otherwise coupled with the receiver 810, the transmitter 815, the communications manager 820, or a combination thereof
  • the device 805 may support techniques for more efficient utilization of communication resources.
  • FIG. 9 shows a block diagram 900 of a device 905 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the device 905 may be an example of aspects of a device 805 or 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 device 905, or various components thereof may be an example of means for performing various aspects of concurrent random access triggering message as described herein.
  • the communications manager 920 may include a TCI state transmitter 925 a random access parameter transmitter 930, or any combination thereof.
  • the communications manager 920 may be an example of aspects of a communications manager 820 as described herein.
  • the communications manager 920, 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 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 TCI state transmitter 925 may be configured as or otherwise support a means for transmitting a first message indicating a first TCI state for a UE and indicating a second TCI state for the UE.
  • the random access parameter transmitter 930 may be configured as or otherwise support a means for transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • FIG. 10 shows a block diagram 1000 of a communications manager 1020 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the communications manager 1020 may be an example of aspects of a communications manager 820, a communications manager 920, or both, as described herein.
  • the communications manager 1020, or various components thereof, may be an example of means for performing various aspects of concurrent random access triggering message as described herein.
  • the communications manager 1020 may include a TCI state transmitter 1025, a random access parameter transmitter 1030, a timing advance transmitter 1035, a downlink control channel transmitter 1040, a random access parameter transmitter 1045, a random access occasion transmitter 1050, a random access occasion transmitter 1055, 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 1020 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the TCI state transmitter 1025 may be configured as or otherwise support a means for transmitting a first message indicating a first TCI state for a UE and indicating a second TCI state for the UE.
  • the random access parameter transmitter 1030 may be configured as or otherwise support a means for transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the timing advance transmitter 1035 may be configured as or otherwise support a means for transmitting an indication of a set of multiple timing advances associated with the first and second TCI states, where the first random access message is associated with a first timing advance of the set of multiple timing advances and the second random access message associated with a second timing advance of the set of multiple timing advances.
  • the downlink control channel transmitter 1040 may be configured as or otherwise support a means for transmitting a downlink control channel, the downlink control channel including a first field indicating the first set of parameters and a second field indicating the second set of parameters.
  • the first field, the second field, or both include a random access mask index field, a preamble index field, a block index field, or any combination thereof.
  • the downlink control channel transmitter 1040 may be configured as or otherwise support a means for transmitting a downlink control channel including a field indicating both the first set of parameters and the second set of parameters.
  • the random access parameter transmitter 1045 may be configured as or otherwise support a means for transmitting a layer 2 or a layer 3 message that includes a first random access indication and a second random access indication.
  • the random access occasion transmitter 1050 may be configured as or otherwise support a means for transmitting a first indication of a first set of multiple random access occasions corresponding to the transmission of the first random access message and associated with a first CSI-RS index.
  • the random access occasion transmitter 1055 may be configured as or otherwise support a means for transmitting a second indication of a second set of multiple random access occasions corresponding to the transmission of the second random access message and associated with a second CSI-RS index.
  • the first set of parameters and the second set of parameters are associated with FDM.
  • the first set of parameters and the second set of parameters are associated with SDM.
  • FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the device 1105 may be an example of or include the components of a device 805, a device 905, or a network entity 105 as described herein.
  • the device 1105 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 1105 may include components that support outputting and obtaining communications, such as a communications manager 1120, a transceiver 1110, an antenna 1115, a memory 1125, code 1130, and a processor 1135. 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 1140) .
  • buses e.g.,
  • the transceiver 1110 may support bi-directional communications via wired links, wireless links, or both as described herein.
  • the transceiver 1110 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1110 may include a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the device 1105 may include one or more antennas 1115, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently) .
  • the transceiver 1110 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1115, by a wired transmitter) , to receive modulated signals (e.g., from one or more antennas 1115, from a wired receiver) , and to demodulate signals.
  • the transceiver 1110, or the transceiver 1110 and one or more antennas 1115 or wired interfaces, where applicable, may be an example of a transmitter 815, a transmitter 915, a receiver 810, a receiver 910, 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 1125 may include RAM and ROM.
  • the memory 1125 may store computer-readable, computer-executable code 1130 including instructions that, when executed by the processor 1135, cause the device 1105 to perform various functions described herein.
  • the code 1130 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1130 may not be directly executable by the processor 1135 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 1125 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 1135 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 1135 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 1135.
  • the processor 1135 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1125) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting concurrent random access triggering message) .
  • the device 1105 or a component of the device 1105 may include a processor 1135 and memory 1125 coupled with the processor 1135, the processor 1135 and memory 1125 configured to perform various functions described herein.
  • the processor 1135 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 1130) to perform the functions of the device 1105.
  • 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 1130
  • a bus 1140 may support communications of (e.g., within) a protocol layer of a protocol stack. In some examples, a bus 1140 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 1105, or between different components of the device 1105 that may be co-located or located in different locations (e.g., where the device 1105 may refer to a system in which one or more of the communications manager 1120, the transceiver 1110, the memory 1125, the code 1130, and the processor 1135 may be located in one of the different components or divided between different components) .
  • a logical channel of a protocol stack e.g., between protocol layers of a protocol stack
  • the device 1105 may refer to a system in which one or more of the communications manager 1120, the transceiver 1110, the memory 1125, the code 1130, and the processor 1135 may be located in one of the different
  • the communications manager 1120 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links) .
  • the communications manager 1120 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • the communications manager 1120 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 1120 may support an X2 interface within an LTE/LTE-A wireless communications network technology to provide communication between network entities 105.
  • the communications manager 1120 may support wireless communications at a network entity in accordance with examples as disclosed herein.
  • the communications manager 1120 may be configured as or otherwise support a means for transmitting a first message indicating a first TCI state for a UE and indicating a second TCI state for the UE.
  • the communications manager 1120 may be configured as or otherwise support a means for transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the device 1105 may support techniques for improved communication reliability and improved coordination between devices.
  • the communications manager 1120 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1110, the one or more antennas 1115 (e.g., where applicable) , or any combination thereof.
  • the communications manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1120 may be supported by or performed by the processor 1135, the memory 1125, the code 1130, the transceiver 1110, or any combination thereof.
  • the code 1130 may include instructions executable by the processor 1135 to cause the device 1105 to perform various aspects of concurrent random access triggering message as described herein, or the processor 1135 and the memory 1125 may be otherwise configured to perform or support such operations.
  • FIG. 12 shows a flowchart illustrating a method 1200 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1200 may be implemented by a UE or its components as described herein.
  • the operations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 7.
  • 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 one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE.
  • the operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by a TCI state receiver 625 as described with reference to FIG. 6.
  • the method may include receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state.
  • the operations of 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by a random access parameter receiver 630 as described with reference to FIG. 6.
  • the method may include transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the operations of 1215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed by a random access message transmitter 635 as described with reference to FIG. 6.
  • FIG. 13 shows a flowchart illustrating a method 1300 that supports concurrent random access triggering message 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 7.
  • 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 an indication of a set of multiple timing advances associated with the first and second TCI states, where the first random access message is transmitted in accordance with a first timing advance of the set of multiple timing advances and the second random access message is transmitted in accordance with a second timing advance of the set of multiple timing advances.
  • 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 timing advance receiver 640 as described with reference to FIG. 6.
  • the method may include receiving one or more first messages that indicate a first TCI state for the UE and a second TCI state for the UE.
  • 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 receiver 625 as described with reference to FIG. 6.
  • the method may include receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state.
  • 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 random access parameter receiver 630 as described with reference to FIG. 6.
  • the method may include transmitting, based on the second message, the first random access message using the first set of parameters in accordance with the first TCI state and the second random access message using the second set of parameters in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • the operations of 1320 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed by a random access message transmitter
  • FIG. 14 shows a flowchart illustrating a method 1400 that supports concurrent random access triggering message in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1400 may be implemented by a network entity or its components as described herein.
  • the operations of the method 1400 may be performed by a network entity as described with reference to FIGs. 1 through 3 and 8 through 11.
  • 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 first message indicating a first TCI state for a UE and indicating a second TCI state for the UE.
  • 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 TCI state transmitter 1025 as described with reference to FIG. 10.
  • the method may include transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time.
  • 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 random access parameter transmitter 1030 as described with reference to FIG. 10.
  • FIG. 15 shows a flowchart illustrating a method 1500 that supports concurrent random access triggering message 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 3 and 8 through 11.
  • 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 first message indicating a first TCI state for a UE and indicating a second TCI state for the UE.
  • 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 TCI state transmitter 1025 as described with reference to FIG. 10.
  • the method may include transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time, and where the second message is a downlink control channel including a first field indicating the first set of parameters and a second field indicating the second set of parameters.
  • 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 random access parameter transmitter 1030 as described with reference to FIG. 10.
  • FIG. 16 shows a flowchart illustrating a method 1600 that supports concurrent random access triggering message 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 3 and 8 through 11.
  • 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 first message indicating a first TCI state for a UE and indicating a second TCI state for the UE.
  • 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 TCI state transmitter 1025 as described with reference to FIG. 10.
  • the method may include transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first TCI state and indicating a second set of parameters for transmission of a second random access message in accordance with the second TCI state, where the first and second random access messages at least partially overlap in time, and where the second message is a downlink control channel including a first field indicating the first set of parameters and a second field indicating the second set of parameters.
  • 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 random access parameter transmitter 1030 as described with reference to FIG. 10.
  • a method for wireless communications at a UE comprising: receiving one or more first messages that indicate a first transmission configuration indicator state for the UE and a second transmission configuration indicator state for the UE;receiving a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first transmission configuration indicator state and indicating a second set of parameters for transmission of a second random access message in accordance with the second transmission configuration indicator state; and transmitting, based at least in part on the second message, the first random access message using the first set of parameters in accordance with the first transmission configuration indicator state and the second random access message using the second set of parameters in accordance with the second transmission configuration indicator state, wherein the first and second random access messages at least partially overlap in time.
  • Aspect 2 The method of aspect 1, further comprising: receiving an indication of a plurality of timing advances associated with the first and second transmission configuration indicator states, wherein the first random access message is transmitted in accordance with a first timing advance of the plurality of timing advances and the second random access message is transmitted in accordance with a second timing advance of the plurality of timing advances.
  • Aspect 3 The method of any of aspects 1 through 2, wherein receiving the second message comprises: receiving a downlink control channel, the downlink control channel comprising a first field indicating the first set of parameters and a second field indicating the second set of parameters, wherein the first field, the second field, or both include a random access mask index field, a preamble index field, a block index field, or any combination thereof.
  • Aspect 4 The method of any of aspects 1 through 3, wherein receiving the second message comprises: receiving a downlink control channel comprising a field indicating both the first set of parameters and the second set of parameters.
  • Aspect 5 The method of any of aspects 1 through 4, wherein transmitting the first random access message and the second random access message comprises: transmitting the first random access message and the second random access message in a same random access occasion, wherein the first random access message is associated with a first index and the second random access message is associated with a second index different from the first index, wherein the first index, the second index, or both include a block index, a preamble index, or any combination thereof.
  • Aspect 6 The method of any of aspects 1 through 5, wherein transmitting the first random access message and the second random access message comprises: transmitting the first random access message in a first random access occasion via a first set of frequency resources; and transmitting the second random access message in a second random access occasion via a second set of frequency resources, wherein the first and second sets of frequency resources are different.
  • Aspect 7 The method of aspect 6, wherein the first transmission configuration indicator state is associated with a first synchronization signal block and the second transmission configuration indicator state is associated with a second synchronization signal block.
  • Aspect 8 The method of aspect 7, wherein the first synchronization signal block and the second synchronization signal block are associated with different identifiers, different transmission configuration indicator groups, different timing advances, or any combination thereof.
  • Aspect 9 The method of any of aspects 1 through 8, wherein receiving the second message comprises: receiving a layer 2 or a layer 3 message that comprises a first random access indication and a second random access indication.
  • Aspect 10 The method of aspect 9, wherein receiving the second message comprises: receiving a first indication of a first plurality of random access occasions corresponding to the transmission of the first random access message and associated with a first channel state indication reference signal index; and receiving a second indication of a second plurality of random access occasions corresponding to the transmission of the second random access message and associated with a second channel state indication reference signal index.
  • Aspect 11 The method of any of aspects 9 through 10, wherein transmitting the first random access message and the second random access message comprises: transmitting the first random access message and the second random access message comprises in a same random access occasion, where the first random access message is associated with a first preamble index different from a second preamble index associated with the second random access message.
  • Aspect 12 The method of any of aspects 9 through 11, wherein transmitting the first random access message and the second random access message comprises: transmitting the first random access message in a first random access occasion via a first set of frequency resources; and transmitting the second random access message in a second random access occasion via a second set of frequency resources.
  • Aspect 13 The method of aspect 12, wherein the first transmission configuration indicator state is associated with a first channel state indication reference signal index and the second transmission configuration indicator state is associated with a second channel state indication reference signal index.
  • Aspect 14 The method of aspect 13, wherein the first channel state indication reference signal index is associated with a first transmission configuration indicator group or a first timing advance group and the second channel state indication reference signal index is associated with a second transmission configuration indicator group or a second timing advance group.
  • Aspect 15 The method of any of aspects 1 through 14, wherein the first set of parameters and the second set of parameters are associated with frequency division multiplexing.
  • Aspect 16 The method of any of aspects 1 through 15, wherein the first set of parameters and the second set of parameters are associated with space division multiplexing.
  • a method for wireless communications at a network entity comprising: transmitting a first message indicating a first transmission configuration indicator state for a UE and indicating a second transmission configuration indicator state for the UE; and transmitting a second message indicating a first set of parameters for transmission of a first random access message in accordance with the first transmission configuration indicator state and indicating a second set of parameters for transmission of a second random access message in accordance with the second transmission configuration indicator state, wherein the first and second random access messages at least partially overlap in time.
  • Aspect 18 The method of aspect 17, further comprising: transmitting an indication of a plurality of timing advances associated with the first and second transmission configuration indicator states, wherein the first random access message is associated with a first timing advance of the plurality of timing advances and the second random access message associated with a second timing advance of the plurality of timing advances.
  • Aspect 19 The method of any of aspects 17 through 18, wherein transmitting the second message comprises: transmitting a downlink control channel, the downlink control channel comprising a first field indicating the first set of parameters and a second field indicating the second set of parameters.
  • Aspect 20 The method of aspect 19, wherein the first field, the second field, or both include a random access mask index field, a preamble index field, a block index field, or any combination thereof.
  • Aspect 21 The method of any of aspects 17 through 20, wherein transmitting the second message comprises: transmitting a downlink control channel comprising a field indicating both the first set of parameters and the second set of parameters.
  • Aspect 22 The method of any of aspects 17 through 21, wherein transmitting the second message comprises: transmitting a layer 2 or a layer 3 message that comprises a first random access indication and a second random access indication.
  • Aspect 23 The method of aspect 22, wherein transmitting the second message comprises: transmitting a first indication of a first plurality of random access occasions corresponding to the transmission of the first random access message and associated with a first channel state indication reference signal index; and transmitting a second indication of a second plurality of random access occasions corresponding to the transmission of the second random access message and associated with a second channel state indication reference signal index.
  • Aspect 24 The method of any of aspects 17 through 23, wherein the first set of parameters and the second set of parameters are associated with frequency division multiplexing.
  • Aspect 25 The method of any of aspects 17 through 24, wherein the first set of parameters and the second set of parameters are associated with space division multiplexing.
  • Aspect 26 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 16.
  • Aspect 27 An apparatus for wireless communications at a UE, comprising at least one means for performing a method of any of aspects 1 through 16.
  • Aspect 28 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 16.
  • Aspect 29 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 25.
  • Aspect 30 An apparatus for wireless communications at a network entity, comprising at least one means for performing a method of any of aspects 17 through 25.
  • Aspect 31 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 25.
  • 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 using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of 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 location 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. Disks may reproduce data magnetically, and discs may reproduce data optically using 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 (e.g., receiving information) , accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.

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Abstract

L'invention concerne des procédés, des systèmes et des dispositifs destinés aux communications sans fil Un UE peut recevoir un ou plusieurs premiers messages indiquant un premier et un second état d'indicateur de configuration de transmission (TCI) pour l'UE. L'UE peut également recevoir un second message indiquant un premier ensemble de paramètres pour la transmission d'un premier message d'accès aléatoire conformément au premier état TCI et un second ensemble de paramètres pour la transmission d'un second message d'accès aléatoire conformément au second état TCI. D'après le second message, l'UE peut transmettre les premier et second messages d'accès aléatoire de façon à ce qu'ils se chevauchent au moins partiellement dans le temps. L'UE peut transmettre le premier message d'accès aléatoire à l'aide du premier ensemble de paramètres conformément au premier état TCI et le second message d'accès aléatoire à l'aide du second ensemble de paramètres conformément au second état TCI.
PCT/CN2022/100318 2022-06-22 2022-06-22 Message de déclenchement d'accès aléatoire simultané WO2023245471A1 (fr)

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PCT/CN2022/100318 WO2023245471A1 (fr) 2022-06-22 2022-06-22 Message de déclenchement d'accès aléatoire simultané

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PCT/CN2022/100318 WO2023245471A1 (fr) 2022-06-22 2022-06-22 Message de déclenchement d'accès aléatoire simultané

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020009741A1 (fr) * 2018-07-02 2020-01-09 Qualcomm Incorporated Transmissions de canal d'accès aléatoire physique simultanées sans contention
US20200204246A1 (en) * 2018-12-20 2020-06-25 Qualcomm Incorporated Transmission configuration indication determination for a shared data channel
WO2021215818A1 (fr) * 2020-04-23 2021-10-28 Samsung Electronics Co., Ltd. Procédé et appareil de mécanisme d'indication de faisceau dynamique
CN114390545A (zh) * 2020-10-16 2022-04-22 展讯通信（上海）有限公司 数据传输处理方法及相关装置
US20220191940A1 (en) * 2020-12-16 2022-06-16 Samsung Electronics Co., Ltd. Method and apparatus for multiple concurrent random access procedures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020009741A1 (fr) * 2018-07-02 2020-01-09 Qualcomm Incorporated Transmissions de canal d'accès aléatoire physique simultanées sans contention
US20200204246A1 (en) * 2018-12-20 2020-06-25 Qualcomm Incorporated Transmission configuration indication determination for a shared data channel
WO2021215818A1 (fr) * 2020-04-23 2021-10-28 Samsung Electronics Co., Ltd. Procédé et appareil de mécanisme d'indication de faisceau dynamique
CN114390545A (zh) * 2020-10-16 2022-04-22 展讯通信（上海）有限公司 数据传输处理方法及相关装置
US20220191940A1 (en) * 2020-12-16 2022-06-16 Samsung Electronics Co., Ltd. Method and apparatus for multiple concurrent random access procedures

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