[go: up one dir, main page]

WO2025138107A1 - Sélection d'état d'indicateur de configuration de transmission pour une cellule candidate - Google Patents

Sélection d'état d'indicateur de configuration de transmission pour une cellule candidate Download PDF

Info

Publication number
WO2025138107A1
WO2025138107A1 PCT/CN2023/143249 CN2023143249W WO2025138107A1 WO 2025138107 A1 WO2025138107 A1 WO 2025138107A1 CN 2023143249 W CN2023143249 W CN 2023143249W WO 2025138107 A1 WO2025138107 A1 WO 2025138107A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
transmission configuration
candidate
configuration indicator
control signaling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2023/143249
Other languages
English (en)
Inventor
Fang Yuan
Yan Zhou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to PCT/CN2023/143249 priority Critical patent/WO2025138107A1/fr
Publication of WO2025138107A1 publication Critical patent/WO2025138107A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link

Definitions

  • the following relates to wireless communications, including transmission configuration indicator (TCI) state selection for a candidate cell.
  • TCI transmission configuration indicator
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • a wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .
  • UE user equipment
  • the described techniques relate to improved methods, systems, devices, and apparatuses that support transmission configuration indicator (TCI) state selection for a candidate cell.
  • TCI transmission configuration indicator
  • the described techniques provide for activating a TCI state of a candidate cell that is configured as a serving cell, such as the serving cell in a carrier aggregation figuration or a transmission/reception point (TRP) in an inter-cell m-TRP operation.
  • a user equipment (UE) may perform tracking, such as tracking reference signal (TRS) tracking, for the candidate cell by activating the TCI state of the candidate cell before switching to the candidate cell or receiving a cell switch command.
  • TRS for the candidate cell, or TRS corresponding to a TCI state of the candidate cell may be configured in a serving cell configuration for the candidate cell.
  • the UE may use a TRS configuration of the candidate cell that is indicated in a serving cell configuration of the candidate cell, which may be configured for beam management of the candidate cell in a carrier aggregation configuration or m-TRP configuration.
  • the TCI state may correspond to a serving cell configuration or a lower-layer triggered mobility (LTM) configuration.
  • a method for wireless communications by a UE may include receiving, from a source cell, higher layer control signaling indicating a first set of TCI states for one or more serving cells, receiving first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells, receiving second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states, and receiving a TRS from the candidate cell in accordance with the TCI state based on the second lower layer control signaling.
  • the UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories.
  • the one or more processors may individually or collectively operable to execute the code to cause the UE to receive, from a source cell, higher layer control signaling indicating a first set of TCI states for one or more serving cells, receive first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells, receive second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states, and receive a TRS from the candidate cell in accordance with the TCI state based on the second lower layer control signaling.
  • a non-transitory computer-readable medium storing code for wireless communications is described.
  • the code may include instructions executable by one or more processors to receive, from a source cell, higher layer control signaling indicating a first set of TCI states for one or more serving cells, receive first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells, receive second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states, and receive a TRS from the candidate cell in accordance with the TCI state based on the second lower layer control signaling.
  • Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving third lower layer control signaling that triggers a mobility procedure of the UE from the source cell to the candidate cell, where the third lower layer control signaling indicates the TCI state from the first set of TCI states or the second set of TCI states.
  • Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for maintaining, after the mobility procedure of the UE from the source cell to the candidate cell, activated TCI states associated with the source cell and the candidate cell.
  • Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a control message indicating a capability of the UE to simultaneously support candidate cells as active serving cells and non-serving cells.
  • the second lower layer control signaling identifies the TCI state from the second set of TCI states based on the TCI state corresponding to the first set of TCI states and the second set of TCI states.
  • Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting third lower layer control signaling that triggers a mobility procedure of the UE from the network entity to the candidate cell, where the third lower layer control signaling indicates the TCI state from the first set of TCI states or the second set of TCI states.
  • Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a control message indicating a capability of the UE to simultaneously support candidate cells as active serving cells and non-serving cells, where the second lower layer control signaling that activates the TCI state may be based on the capability of the UE.
  • the UE may include means for receiving, from a source cell, first control signaling indicating one or more physical cell identifiers for one or more candidate cells, means for receiving second control signaling indicating a mobility procedure of the UE from a source cell to a candidate cell of the one or more candidate cells, where the candidate cell corresponds to a physical cell identifier, means for receiving downlink signaling from the candidate cell in accordance with a TCI state that is based on a control resource set pool index that corresponds to the physical cell identifier of the candidate cell, and means for transmitting uplink signaling to the candidate cell using one or more power parameters associated with a control resource set pool index corresponding to the physical cell identifier of the candidate cell.
  • FIG. 1 shows an example of a wireless communications system 100 that supports TCI state selection for a candidate cell 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
  • 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 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 on 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.
  • 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 TCI state selection for a candidate cell 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
  • 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.
  • One or more numerologies for a carrier may be supported, and a numerology may include a subcarrier spacing ( ⁇ f) and a cyclic prefix.
  • a carrier may be divided into one or more BWPs having the same or different numerologies.
  • a UE 115 may be configured with multiple BWPs.
  • a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
  • 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) ) .
  • 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.
  • 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.
  • the network entities 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers.
  • Such techniques may be referred to as spatial multiplexing.
  • the multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas.
  • Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords) .
  • Different spatial layers may be associated with different antenna ports used for channel measurement and reporting.
  • MIMO techniques include single-user MIMO (SU-MIMO) , for which multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) , for which multiple spatial layers are transmitted to multiple devices.
  • SU-MIMO single-user MIMO
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a 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 transmitting device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • a transmitting device e.g., a network entity 105
  • 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 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 device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
  • a UE 115 may receive control signaling indicating parameters for a serving cell. For example, the UE 115 may communicate with a source cell, and the UE 115 may have received (e.g., either from the source cell or a previous source cell) a control signal that indicates a serving cell configuration for the source cell. In some examples, the UE 115 may be configured for carrier aggregation or multi-transmission/reception point (m-TRP) communications. The UE 115 may receive serving cell configurations for candidate cells in the carrier aggregation configuration or m-TRP configuration.
  • m-TRP multi-transmission/reception point
  • the UE 115 may have a serving cell configuration for a source cell that provides a first component carrier in a carrier aggregation configuration, and the UE 115 may have a serving cell configuration for a cell that provides a second component carrier in the carrier aggregation configuration.
  • a serving cell configuration may include, for example, one or more TCI states or a TRS configuration.
  • LTM Some wireless communications systems may support LTM.
  • a serving cell may transmit lower layer signaling, such as L1 or L2 signaling, to trigger mobility procedures at a UE 115.
  • LTM signaling may be used for configuration and maintenance for multiple candidate cells, which may enable fast application of configurations for candidate cells.
  • LTM signaling may be implemented for a dynamic switch mechanism among candidate serving cells, including serving cells and secondary cells, based on L1 or L2 signaling.
  • LTM may be used for inter-cell beam management, including L1 measurement and reporting and beam indication.
  • LTM may be used for timing advance management, configuration, or reconfiguration.
  • LTM signaling may be implemented via a CU-DU interface signaling to support L1/L2 mobility.
  • an SSB or TRS may be configured in a TCI state for a candidate cell before or during a cell switch command.
  • a capability of a UE 115 may determine whether the UE 115 may use the TRS for the candidate cells before or during the cell switch command.
  • the UE 115 may receive a serving cell configuration for a source cell.
  • the serving cell configuration for the source cell may include parameters for a TRS and a TCI state for the source cell.
  • the UE 115 may also receive an LTM configuration for candidate cells.
  • the LTM configuration for the candidate cells may include LTM TCI states and TRS configurations for the candidate cells.
  • the serving cell configuration for the source cell and the LTM configuration may be available before the UE 115 receives a cell switch command.
  • the UE 115 may receive a serving cell configuration for a target cell. For example, the UE 115 may be triggered to switch from a source cell to a target cell, and the UE 115 may receive a serving cell configuration for the target cell.
  • the source cell may transmit the serving cell configuration for the target cell to the UE 115.
  • the serving cell configuration for the target cell may include one or more TCI states for beam management and a TRS configuration for the target cell.
  • the serving cell configuration for the target cell may not be available to the UE 115 prior to the cell switch, or the UE 115 receiving the cell switch command.
  • the wireless communications system 100 may support techniques such as carrier aggregation and multi-TRP operation.
  • a UE 115 may be configured with one or more serving cells for carrier aggregation or one or more TRPs in inter-cell m-TRP operation.
  • the UE 115 may be configured with serving cell configurations for the serving cells in the carrier aggregation or m-TRP operation.
  • the serving cell configurations may include TCI states (e.g., for beam management) and TRS configurations.
  • a serving cell e.g., providing a component carrier for carrier aggregation
  • a TRP of an m-TRP operation may be a candidate cell
  • the UE 115 may be triggered to switch to the candidate cell which operates as a serving cell or TRP in the m-TRP operation.
  • the UE 115 may have both a serving cell configuration for the candidate cell and an LTM configuration for the candidate cell, which may result in a collision between parameters for the cell switch.
  • TRS for the candidate cell may be configured in a serving cell configuration for the candidate cell.
  • the UE 115 may use a TRS configuration of the candidate cell that is indicated in a serving cell configuration of the candidate cell, which may be configured for beam management of the candidate cell in a carrier aggregation configuration or m-TRP configuration.
  • the UE 115 may ignore an LTM TCI state pool configuration for the candidate cell, and a cell switch command may indicate a TCI state from a TCI state pool in the serving cell configuration for the candidate cell.
  • the LTM TCI state pool may be valid and correspond to at least a subset of the TCI state pool configured in the serving cell configuration.
  • a MAC CE may include a LTM TCI state activation to activate a TCI state for the candidate cell.
  • a MAC CE for m-TRP operation may include a TCI state activation for the TCI state for the candidate cell.
  • FIG. 2 shows an example of a wireless communications system 200 that supports TCI state selection for a candidate cell in accordance with one or more aspects of the present disclosure.
  • the wireless communications system 200 may include a UE 115-a, which may be an example of a UE 115 as described herein.
  • the wireless communications system 200 may include multiple network entities 105, such as a network entity 105-a and a network entity 105-b, which may be each be an example of a network entity 105 or a TRP as described herein.
  • the wireless communications system 200 may include a network entity 105-c, which may be an example of a network entity 105 or a TRP.
  • the network entity 105-a may be an example of a serving cell, such as a source cell.
  • the network entity 105-a and the UE 115-a may communicate via a link 205-a.
  • the link 205-a may be used for downlink communications and uplink communications.
  • the network entity 105-b may be another example of a serving cell.
  • the network entity 105-b may provide a component carrier in a carrier aggregation configuration, or the network entity 105-b may be an example of a TRP in an m-TRP operation. If the network entity 105-b is operating as a TRP in an m-TRP operation, the network entity 105-b may be configured with an active additional PCID for inter-cell beam management.
  • the UE 115-a and the network entity 105-b may communicate via a link 205-b.
  • the network entity 105-c may be another example of a serving cell.
  • the network entity 105-c may provide a component carrier in carrier aggregation or may operate as a TRP in the m-TRP operation.
  • the UE 115-a and the network entity 105-c may communicate via the link 205-c.
  • the link 205-b and the link 205-c may be used for downlink signaling.
  • the link 205-b or the link 205-c, or both may be used for uplink signaling.
  • the network entity 105-a may transmit a control signal indicating a serving cell configuration 210 to the UE 115-a.
  • the network entity 105-a may transmit higher layer signaling, such as RRC signaling, to indicate the serving cell configuration 210.
  • the serving cell configuration 210 may indicate a TCI state and TRS configuration for a serving cell.
  • the serving cell configuration 210 may indicate a TRS configuration for the network entity 105-b.
  • a TRS configuration may include a resource allocation, a resource pattern, sequence information, or any combination thereof, for a TRS.
  • the control signal or a different control signal may indicate a serving cell configuration for the network entity 105-c.
  • a serving cell may transmit a MAC CE (e.g., a TCI deactivation MAC CE) indicating for the UE 115-a to deactivate a TCI state associated with the source cell or the target cell, and the UE 115-a may deactivate the TCI state indicated by the MAC CE.
  • a MAC CE e.g., a TCI deactivation MAC CE
  • the UE 115-b may transmit a capability message to the network entity 105-d.
  • the capability message may indicate capabilities of the UE 115-b associated with LTM.
  • the UE 115-b may transmit a control message indicating a capability of the UE 115-b to support candidate cells which are active serving cells and candidate cells which are non-serving cells.
  • the UE 115-b may indicate a capability of the UE 115-b to simultaneously support candidate cells as active serving cells and non-serving cells.
  • FIG. 4 shows a block diagram 400 of a device 405 that supports TCI state selection for a candidate cell 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, or one or more components of the device 405 may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • 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 at least one of 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, individually or collectively, 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
  • microcontroller discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure.
  • At least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
  • the communications manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be implemented in code such as processor-executable code (e.g., as communications management software or firmware) executed by at least one processor. If implemented in code executed by at least one 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, individually or collectively, a means for performing the functions described in the present disclosure) .
  • processor-executable 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
  • 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 in accordance with examples as disclosed herein.
  • the communications manager 420 is capable of, configured to, or operable to support a means for receiving, from a source cell, higher layer control signaling indicating a first set of TCI states for one or more serving cells.
  • the communications manager 420 is capable of, configured to, or operable to support a means for receiving first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells.
  • the communications manager 420 is capable of, configured to, or operable to support a means for receiving second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states.
  • the communications manager 420 is capable of, configured to, or operable to support a means for receiving a TRS from the candidate cell in accordance with the TCI state based on the second lower layer control signaling.
  • the communications manager 420 may support wireless communications in accordance with examples as disclosed herein.
  • the communications manager 420 is capable of, configured to, or operable to support a means for receiving, from a source cell, first control signaling indicating one or more physical cell identifiers for one or more candidate cells.
  • the communications manager 420 is capable of, configured to, or operable to support a means for receiving second control signaling indicating a mobility procedure of the UE from a source cell to a candidate cell of the one or more candidate cells, where the candidate cell corresponds to a physical cell identifier.
  • the communications manager 420 is capable of, configured to, or operable to support a means for receiving downlink signaling from the candidate cell in accordance with a TCI state that is based on a control resource set pool index that corresponds to the physical cell identifier of the candidate cell.
  • the communications manager 420 is capable of, configured to, or operable to support a means for transmitting uplink signaling to the candidate cell using one or more power parameters associated with a control resource set pool index corresponding to the physical cell identifier of the candidate cell.
  • the device 405 e.g., at least one 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 reduced processing.
  • FIG. 5 shows a block diagram 500 of a device 505 that supports TCI state selection for a candidate cell 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, or one or more components of the device 505 (e.g., the receiver 510, the transmitter 515, and the communications manager 520) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. 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 TCI state selection for a candidate cell) . 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 TCI state selection for a candidate cell) .
  • 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 TCI state selection for a candidate cell as described herein.
  • the communications manager 520 may include a serving cell configuration component 525, an LTM configuration component 530, a TCI state activation component 535, an TRS component 540, a mobility component 545, a downlink reception component 550, an uplink transmission component 555, 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 in accordance with examples as disclosed herein.
  • the serving cell configuration component 525 is capable of, configured to, or operable to support a means for receiving, from a source cell, higher layer control signaling indicating a first set of TCI states for one or more serving cells.
  • the LTM configuration component 530 is capable of, configured to, or operable to support a means for receiving first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells.
  • the TCI state activation component 535 is capable of, configured to, or operable to support a means for receiving second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states.
  • the TRS component 540 is capable of, configured to, or operable to support a means for receiving a TRS from the candidate cell in accordance with the TCI state based on the second lower layer control signaling.
  • the communications manager 520 may support wireless communications in accordance with examples as disclosed herein.
  • the serving cell configuration component 525 is capable of, configured to, or operable to support a means for receiving, from a source cell, first control signaling indicating one or more physical cell identifiers for one or more candidate cells.
  • the mobility component 545 is capable of, configured to, or operable to support a means for receiving second control signaling indicating a mobility procedure of the UE from a source cell to a candidate cell of the one or more candidate cells, where the candidate cell corresponds to a physical cell identifier.
  • the downlink reception component 550 is capable of, configured to, or operable to support a means for receiving downlink signaling from the candidate cell in accordance with a TCI state that is based on a control resource set pool index that corresponds to the physical cell identifier of the candidate cell.
  • the uplink transmission component 555 is capable of, configured to, or operable to support a means for transmitting uplink signaling to the candidate cell using one or more power parameters associated with a control resource set pool index corresponding to the physical cell identifier of the candidate cell.
  • FIG. 6 shows a block diagram 600 of a communications manager 620 that supports TCI state selection for a candidate cell 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 TCI state selection for a candidate cell as described herein.
  • the communications manager 620 may include a serving cell configuration component 625, an LTM configuration component 630, a TCI state activation component 635, an TRS component 640, a mobility component 645, a downlink reception component 650, an uplink transmission component 655, an LTM component 660, a UE capability component 665, or any combination thereof.
  • Each of these components, or components or subcomponents thereof e.g., one or more processors, one or more memories
  • the communications manager 620 may support wireless communications in accordance with examples as disclosed herein.
  • the serving cell configuration component 625 is capable of, configured to, or operable to support a means for receiving, from a source cell, higher layer control signaling indicating a first set of TCI states for one or more serving cells.
  • the LTM configuration component 630 is capable of, configured to, or operable to support a means for receiving first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells.
  • the TCI state activation component 635 is capable of, configured to, or operable to support a means for receiving second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states.
  • the TRS component 640 is capable of, configured to, or operable to support a means for receiving a TRS from the candidate cell in accordance with the TCI state based on the second lower layer control signaling.
  • the LTM component 660 is capable of, configured to, or operable to support a means for receiving third lower layer control signaling that triggers a mobility procedure of the UE from the source cell to the candidate cell, where the third lower layer control signaling indicates the TCI state from the first set of TCI states or the second set of TCI states.
  • the LTM component 660 is capable of, configured to, or operable to support a means for maintaining, after the mobility procedure of the UE from the source cell to the candidate cell, activated TCI states associated with the source cell and the candidate cell.
  • 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 or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor. If implemented in code executed by at least one 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, individually or collectively, a means for performing the functions described in the present disclosure) .
  • code e.g., as communications management software or firmware
  • the communications manager 820 may support wireless communications in accordance with examples as disclosed herein.
  • the communications manager 820 is capable of, configured to, or operable to support a means for transmitting, to a UE, higher layer control signaling indicating a first set of TCI states for one or more serving cells.
  • the communications manager 820 is capable of, configured to, or operable to support a means for transmitting first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells.
  • the device 805 e.g., at least one 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 reduced processing.
  • FIG. 9 shows a block diagram 900 of a device 905 that supports TCI state selection for a candidate cell 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, or one or more components of the device 905 may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • the receiver 910 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) .
  • Information may be passed on to other components of the device 905.
  • the receiver 910 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 910 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
  • the transmitter 915 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 905.
  • the transmitter 915 may output information such as user data, control information, or any combination thereof (e.g., I/Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) .
  • the transmitter 915 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 915 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
  • the transmitter 915 and the receiver 910 may be co-located in a transceiver, which may include or be coupled with a modem.
  • the communications manager 920 may support wireless communications in accordance with examples as disclosed herein.
  • the serving cell configuration component 925 is capable of, configured to, or operable to support a means for transmitting, to a UE, higher layer control signaling indicating a first set of TCI states for one or more serving cells.
  • the LTM configuration component 930 is capable of, configured to, or operable to support a means for transmitting first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells.
  • the TCI state activating component 935 is capable of, configured to, or operable to support a means for transmitting second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states.
  • FIG. 10 shows a block diagram 1000 of a communications manager 1020 that supports TCI state selection for a candidate cell 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 TCI state selection for a candidate cell as described herein.
  • the communications manager 1020 may include a serving cell configuration component 1025, an LTM configuration component 1030, a TCI state activating component 1035, an LTM component 1040, a UE capability component 1045, or any combination thereof.
  • Each of these components, or components or subcomponents thereof 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 TCI state activating component 1035 is capable of, configured to, or operable to support a means for transmitting second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states.
  • the LTM component 1040 is capable of, configured to, or operable to support a means for transmitting third lower layer control signaling that triggers a mobility procedure of the UE from the network entity to the candidate cell, where the third lower layer control signaling indicates the TCI state from the first set of TCI states or the second set of TCI states.
  • the UE capability component 1045 is capable of, configured to, or operable to support a means for receiving a control message indicating a capability of the UE to simultaneously support candidate cells as active serving cells and non-serving cells, where the second lower layer control signaling that activates the TCI state is based on the capability of the UE.
  • the second lower layer control signaling identifies the TCI state from the first set of TCI states.
  • the second lower layer control signaling identifies the TCI state from the second set of TCI states based on the TCI state corresponding to the first set of TCI states and the second set of TCI states.
  • the higher layer control signaling indicates parameters for a TRS from the candidate cell associated with the TCI state.
  • the network entity and the serving cell each provide one or more component carriers in a carrier aggregation configuration.
  • the network entity and the serving cell each correspond to a transmission-reception point (TRP) with a physical cell identifier in a multi-TRP configuration.
  • TRP transmission-reception point
  • the higher layer control signaling includes a serving cell configuration for the network entity or a serving cell configuration for the candidate cell, or both.
  • FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports TCI state selection for a candidate cell 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, at least one memory 1125, code 1130, and at least one 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
  • 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 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1115 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1115 that are configured to support various transmitting or outputting operations, or a combination thereof.
  • the transceiver 1110 may include or be configured for coupling with one or more processors or one or more memory components that are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other outputting, or any combination thereof.
  • the transceiver 1110, or the transceiver 1110 and the one or more antennas 1115, or the transceiver 1110 and the one or more antennas 1115 and one or more processors or one or more memory components may be included in a chip or chip assembly that is installed in the device 1105.
  • the transceiver 1110 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) .
  • a communications link 125 e.g., a communication link 125, a backhaul communication link 120, a midhaul communication link 162, a fronthaul communication link 168 .
  • the at least one memory 1125 may include RAM, ROM, or any combination thereof.
  • the at least one memory 1125 may store computer-readable, computer-executable code 1130 including instructions that, when executed by one or more of the at least one 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.
  • the code 1130 may not be directly executable by a processor of the at least one processor 1135 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the at least one 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 at least one processor 1135 may be configured to execute computer-readable instructions stored in a memory (e.g., one or more of the at least one memory 1125) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting TCI state selection for a candidate cell) .
  • a memory e.g., one or more of the at least one memory 1125
  • the device 1105 or a component of the device 1105 may include at least one processor 1135 and at least one memory 1125 coupled with one or more of the at least one processor 1135, the at least one processor 1135 and the at least one memory 1125 configured to perform various functions described herein.
  • 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 method may include receiving, from a source cell, higher layer control signaling indicating a first set of TCI states for one or more serving cells.
  • the operations of block 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 serving cell configuration component 625 as described with reference to FIG. 6.
  • the method may include receiving first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells.
  • the operations of block 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by an LTM configuration component 630 as described with reference to FIG. 6.
  • the method may include receiving second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states.
  • the operations of block 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 TCI state activation component 635 as described with reference to FIG. 6.
  • the method may include receiving a TRS from the candidate cell in accordance with the TCI state based on the second lower layer control signaling.
  • the operations of block 1220 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1220 may be performed by an TRS component 640 as described with reference to FIG. 6.
  • FIG. 13 shows a flowchart illustrating a method 1300 that supports TCI state selection for a candidate cell in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1300 may be implemented by a network entity or its components as described herein.
  • the operations of the method 1300 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, to a UE, higher layer control signaling indicating a first set of TCI states for one or more serving cells.
  • the operations of block 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 serving cell configuration component 1025 as described with reference to FIG. 10.
  • the method may include transmitting first lower layer control signaling indicating a second set of TCI states for one or more candidate cells, where a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells.
  • the operations of block 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by an LTM configuration component 1030 as described with reference to FIG. 10.
  • the method may include transmitting second lower layer control signaling that activates a TCI state associated with the candidate cell, where the TCI state is from the first set of TCI states or the second set of TCI states.
  • the operations of block 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by a TCI state activating component 1035 as described with reference to FIG. 10.
  • FIG. 14 shows a flowchart illustrating a method 1400 that supports TCI state selection for a candidate cell in accordance with one or more aspects of the present disclosure.
  • the operations of the method 1400 may be implemented by a UE or its components as described herein.
  • the operations of the method 1400 may be performed by a UE 115 as described with reference to FIGs. 1 through 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, from a source cell, first control signaling indicating one or more physical cell identifiers for one or more candidate cells.
  • the operations of block 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 serving cell configuration component 625 as described with reference to FIG. 6.
  • the method may include receiving second control signaling indicating a mobility procedure of the UE from a source cell to a candidate cell of the one or more candidate cells, where the candidate cell corresponds to a physical cell identifier.
  • the operations of block 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 mobility component 645 as described with reference to FIG. 6.
  • the method may include receiving downlink signaling from the candidate cell in accordance with a TCI state that is based on a control resource set pool index that corresponds to the physical cell identifier of the candidate cell.
  • the operations of block 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by a downlink reception component 650 as described with reference to FIG. 6.
  • the method may include transmitting uplink signaling to the candidate cell using one or more power parameters associated with a control resource set pool index corresponding to the physical cell identifier of the candidate cell.
  • the operations of block 1420 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1420 may be performed by an uplink transmission component 655 as described with reference to FIG. 6.
  • a method for wireless communications at a UE comprising: receiving, from a source cell, higher layer control signaling indicating a first set of transmission configuration indicator states for one or more serving cells; receiving first lower layer control signaling indicating a second set of transmission configuration indicator states for one or more candidate cells, wherein a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells; receiving second lower layer control signaling that activates a transmission configuration indicator state associated with the candidate cell, wherein the transmission configuration indicator state is from the first set of transmission configuration indicator states or the second set of transmission configuration indicator states; and receiving a tracking reference signal from the candidate cell in accordance with the transmission configuration indicator state based at least in part on the second lower layer control signaling.
  • Aspect 2 The method of aspect 1, further comprising: receiving third lower layer control signaling that triggers a mobility procedure of the UE from the source cell to the candidate cell, wherein the third lower layer control signaling indicates the transmission configuration indicator state from the first set of transmission configuration indicator states or the second set of transmission configuration indicator states.
  • Aspect 3 The method of aspect 2, further comprising: maintaining, after the mobility procedure of the UE from the source cell to the candidate cell, activated transmission configuration indicator states associated with the source cell and the candidate cell.
  • Aspect 4 The method of any of aspects 1 through 3, further comprising: transmitting a control message indicating a capability of the UE to simultaneously support candidate cells as active serving cells and non-serving cells.
  • Aspect 5 The method of any of aspects 1 through 4, wherein the second lower layer control signaling identifies the transmission configuration indicator state from the first set of transmission configuration indicator states.
  • Aspect 6 The method of any of aspects 1 through 5, wherein the second lower layer control signaling identifies the transmission configuration indicator state from the second set of transmission configuration indicator states based at least in part on the transmission configuration indicator state corresponding to the first set of transmission configuration indicator states and the second set of transmission configuration indicator states.
  • Aspect 7 The method of any of aspects 1 through 6, wherein the higher layer control signaling indicates parameters for the tracking reference signal from the candidate cell associated with the transmission configuration indicator state.
  • Aspect 8 The method of any of aspects 1 through 7, wherein the serving cell provides one or more component carriers in a carrier aggregation configuration.
  • Aspect 10 The method of any of aspects 1 through 9, wherein the higher layer control signaling includes a serving cell configuration for the source cell or a serving cell configuration for the candidate cell, or both.
  • a method for wireless communications at a network entity comprising: transmitting, to a UE, higher layer control signaling indicating a first set of transmission configuration indicator states for one or more serving cells; transmitting first lower layer control signaling indicating a second set of transmission configuration indicator states for one or more candidate cells, wherein a candidate cell of the one or more candidate cells corresponds to a serving cell of the one or more serving cells; and transmitting second lower layer control signaling that activates a transmission configuration indicator state associated with the candidate cell, wherein the transmission configuration indicator state is from the first set of transmission configuration indicator states or the second set of transmission configuration indicator states.
  • Aspect 12 The method of aspect 11, further comprising: transmitting third lower layer control signaling that triggers a mobility procedure of the UE from the network entity to the candidate cell, wherein the third lower layer control signaling indicates the transmission configuration indicator state from the first set of transmission configuration indicator states or the second set of transmission configuration indicator states.
  • Aspect 13 The method of any of aspects 11 through 12, further comprising: receiving a control message indicating a capability of the UE to simultaneously support candidate cells as active serving cells and non-serving cells, wherein the second lower layer control signaling that activates the transmission configuration indicator state is based at least in part on the capability of the UE.
  • Aspect 14 The method of any of aspects 11 through 13, wherein the second lower layer control signaling identifies the transmission configuration indicator state from the first set of transmission configuration indicator states.
  • Aspect 15 The method of any of aspects 11 through 14, wherein the second lower layer control signaling identifies the transmission configuration indicator state from the second set of transmission configuration indicator states based at least in part on the transmission configuration indicator state corresponding to the first set of transmission configuration indicator states and the second set of transmission configuration indicator states.
  • Aspect 16 The method of any of aspects 11 through 15, wherein the higher layer control signaling indicates parameters for a tracking reference signal from the candidate cell associated with the transmission configuration indicator state.
  • Aspect 17 The method of any of aspects 11 through 16, wherein the network entity and the serving cell each provide one or more component carriers in a carrier aggregation configuration.
  • Aspect 18 The method of any of aspects 11 through 17, wherein the network entity and the serving cell each correspond to a transmission-reception point (TRP) with a physical cell identifier in a multi-TRP configuration.
  • TRP transmission-reception point
  • Aspect 19 The method of any of aspects 11 through 18, wherein the higher layer control signaling includes a serving cell configuration for the network entity or a serving cell configuration for the candidate cell, or both.
  • a method for wireless communications at a UE comprising: receiving, from a source cell, first control signaling indicating one or more physical cell identifiers for one or more candidate cells; receiving second control signaling indicating a mobility procedure of the UE from a source cell to a candidate cell of the one or more candidate cells, wherein the candidate cell corresponds to a physical cell identifier; receiving downlink signaling from the candidate cell in accordance with a transmission configuration indicator state that is based at least in part on a control resource set pool index that corresponds to the physical cell identifier of the candidate cell; and transmitting uplink signaling to the candidate cell using one or more power parameters associated with a control resource set pool index corresponding to the physical cell identifier of the candidate cell.
  • a UE for wireless communications comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 10.
  • a UE for wireless communications comprising at least one means for performing a method of any of aspects 1 through 10.
  • Aspect 23 A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 10.
  • a network entity for wireless communications comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network entity to perform a method of any of aspects 11 through 19.
  • a network entity for wireless communications comprising at least one means for performing a method of any of aspects 11 through 19.
  • Aspect 26 A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 11 through 19.
  • a UE for wireless communications comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 20 through 20.
  • a UE for wireless communications comprising at least one means for performing a method of any of aspects 20 through 20.
  • Aspect 29 A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 20 through 20.
  • 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) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
  • 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. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
  • the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns.
  • the terms “a, ” “at least one, ” “one or more, ” “at least one of one or more” may be interchangeable.
  • a claim recites “a component” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components.
  • the term “a component” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function.
  • a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components.
  • a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components.
  • subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components.
  • referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
  • 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.

Landscapes

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

Abstract

Des procédés, des systèmes et des dispositifs destinés aux communications sans fil sont décrits. Un équipement utilisateur (UE) peut recevoir, en provenance d'une cellule source, une signalisation de commande de couche supérieure indiquant un premier ensemble d'états d'indicateur de configuration de transmission (TCI) pour une ou plusieurs cellules de desserte. L'UE peut recevoir une signalisation de commande de couche inférieure indiquant un second ensemble d'états TCI pour une ou plusieurs cellules candidates, une cellule candidate pouvant être l'une des cellules de desserte. L'UE peut recevoir une signalisation de commande de couche inférieure qui active un état TCI associé à la cellule candidate. L'état TCI peut faire partie du premier ensemble d'états TCI ou du second ensemble d'états TCI. L'UE peut recevoir un signal de référence de suivi (TRS) provenant de la cellule candidate conformément à l'état TCI.
PCT/CN2023/143249 2023-12-29 2023-12-29 Sélection d'état d'indicateur de configuration de transmission pour une cellule candidate Pending WO2025138107A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/143249 WO2025138107A1 (fr) 2023-12-29 2023-12-29 Sélection d'état d'indicateur de configuration de transmission pour une cellule candidate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2023/143249 WO2025138107A1 (fr) 2023-12-29 2023-12-29 Sélection d'état d'indicateur de configuration de transmission pour une cellule candidate

Publications (1)

Publication Number Publication Date
WO2025138107A1 true WO2025138107A1 (fr) 2025-07-03

Family

ID=96216589

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/143249 Pending WO2025138107A1 (fr) 2023-12-29 2023-12-29 Sélection d'état d'indicateur de configuration de transmission pour une cellule candidate

Country Status (1)

Country Link
WO (1) WO2025138107A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200112886A1 (en) * 2018-10-09 2020-04-09 Qualcomm Incorporated Configuration enhancement in handover
CN111586862A (zh) * 2019-02-15 2020-08-25 华为技术有限公司 信息指示的方法及装置
WO2022217485A1 (fr) * 2021-04-14 2022-10-20 Qualcomm Incorporated Techniques d'activation directe de cellule secondaire à l'aide de signaux de référence temporaires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200112886A1 (en) * 2018-10-09 2020-04-09 Qualcomm Incorporated Configuration enhancement in handover
CN111586862A (zh) * 2019-02-15 2020-08-25 华为技术有限公司 信息指示的方法及装置
WO2022217485A1 (fr) * 2021-04-14 2022-10-20 Qualcomm Incorporated Techniques d'activation directe de cellule secondaire à l'aide de signaux de référence temporaires

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NOKIA, NOKIA SHANGHAI BELL: "Discussion on LTM cell switch delay requirements", 3GPP DRAFT; R4-2309491, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. 3GPP RAN 4, no. Incheon, Korea; 20230522 - 20230526, 21 May 2023 (2023-05-21), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052485564 *

Similar Documents

Publication Publication Date Title
WO2023184062A1 (fr) Configurations de ressources d'informations d'état de canal pour prédiction de faisceau
US12356393B2 (en) Sounding reference signal resource configuration for transmission antenna ports
WO2024164106A1 (fr) Planification pour bandes de fréquences associées à une capacité de changement de première bande après un commutateur de chaîne de transmission
US20240089975A1 (en) Techniques for dynamic transmission parameter adaptation
US20230328743A1 (en) Multicast communication with cross-carrier scheduling
WO2025138107A1 (fr) Sélection d'état d'indicateur de configuration de transmission pour une cellule candidate
US12363569B2 (en) Inter-UE cross-link interference aware beam failure detection and radio link management
WO2025145314A1 (fr) Rapport d'informations d'état de canal (csi) pour des cellules candidates à mobilité déclenchée par une couche inférieure
US12425938B2 (en) Techniques for layer 2 signaling for layer 1 and layer 2 mobility
WO2025020069A1 (fr) Mobilité conditionnelle déclenchée de basse couche utilisant une prédiction de faisceau
US12156066B2 (en) Transmission and reception beam management for cross link interference measurement
WO2025179414A1 (fr) Gestion de faisceau déclenchée par un événement lié à la liaison montante
US12328285B2 (en) Resource indicator values for guard band indications
WO2024227274A1 (fr) Informations de faisceau de cellules voisines pour scénarios de mobilité
WO2025107223A1 (fr) Indication de déclenchement de canal d'accès aléatoire pour cellules candidates avec de multiples points de transmission-réception
WO2025208403A1 (fr) Mappage de signaux de référence à des indicateurs de configuration de transmission pour une gestion et un rapport de faisceau
US20250233627A1 (en) Enhancement of user equipment (ue) selection for uplink aggregation
WO2025030458A1 (fr) Procédures de mesure d'informations d'état de canal de mobilité déclenchée par couche inférieure
US20250240148A1 (en) Subband full-duplex aware user equipment
WO2024197782A1 (fr) États d'indicateur de configuration de transmission pour prédiction de faisceau spatial
US20240250737A1 (en) Autonomous uplink beam selection and activation
WO2025199854A1 (fr) Améliorations de signal de référence de sondage pour découverte de liaison montante ou gestion de faisceau
WO2024026603A1 (fr) Activation et rapport de qualité d'expérience d'état de repos
US20240098759A1 (en) Common time resources for multicasting
US20250047396A1 (en) Cross-link interference report with multiple hypotheses

Legal Events

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

Ref document number: 23962782

Country of ref document: EP

Kind code of ref document: A1