WO2024016105A1 - Configuration d'intervalle de mesure de décalage temporel - Google Patents

Configuration d'intervalle de mesure de décalage temporel Download PDF

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Publication number
WO2024016105A1
WO2024016105A1 PCT/CN2022/106234 CN2022106234W WO2024016105A1 WO 2024016105 A1 WO2024016105 A1 WO 2024016105A1 CN 2022106234 W CN2022106234 W CN 2022106234W WO 2024016105 A1 WO2024016105 A1 WO 2024016105A1
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WO
WIPO (PCT)
Prior art keywords
measurement gap
dci
gap configuration
indication
processor
Prior art date
Application number
PCT/CN2022/106234
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English (en)
Inventor
Fang Yuan
Yan Zhou
Tao Luo
Changhwan Park
Jelena Damnjanovic
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Qualcomm Incorporated
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Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2022/106234 priority Critical patent/WO2024016105A1/fr
Publication of WO2024016105A1 publication Critical patent/WO2024016105A1/fr

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    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present disclosure relates generally to communication systems, and more particularly, to a measurement gap time offset system.
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • 5G New Radio is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements.
  • 3GPP Third Generation Partnership Project
  • 5G NR includes services associated with enhanced mobile broadband (eMBB) , massive machine type communications (mMTC) , and ultra-reliable low latency communications (URLLC) .
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable low latency communications
  • Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard.
  • LTE Long Term Evolution
  • a method, a computer-readable medium, and an apparatus may have a memory and at least one processor coupled to the memory at a UE. Based at least in part on information stored in the memory, the at least one processor may be configured to receive downlink control information (DCI) or a medium access control (MAC) control element (MAC-CE) indicating at least one measurement gap configuration. Based at least in part on information stored in the memory, the at least one processor may be configured to apply the at least one measurement gap configuration after a time offset.
  • DCI downlink control information
  • MAC-CE medium access control element
  • a method, a computer-readable medium, and an apparatus may have a memory and at least one processor coupled to the memory at a network entity. Based at least in part on information stored in the memory, the at least one processor may be configured to transmit downlink control information (DCI) or a medium access control (MAC) control element (MAC-CE) indicating at least one measurement gap configuration. Based at least in part on information stored in the memory, the at least one processor may be configured to output an indication to transmit a measurement signal during a measurement gap based on the at least one measurement gap configuration.
  • DCI downlink control information
  • MAC-CE medium access control element
  • the one or more aspects include the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.
  • FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network.
  • FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
  • FIG. 2B is a diagram illustrating an example of DL channels within a subframe, in accordance with various aspects of the present disclosure.
  • FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
  • FIG. 2D is a diagram illustrating an example of UL channels within a subframe, in accordance with various aspects of the present disclosure.
  • FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.
  • UE user equipment
  • FIG. 4A is a diagram illustrating an example of a UE changing a primary cell (PCell) , in accordance with various aspects of the present disclosure.
  • FIG. 4B is a diagram illustrating an example of a UE switching a secondary cell (SCell) and a primary cell (PCell) , in accordance with various aspects of the present disclosure.
  • FIG. 5 is a diagram illustrating an example of a UE changing a cell group (CG) , in accordance with various aspects of the present disclosure.
  • FIG. 6 is a diagram illustrating an example of a measurement gap configuration, in accordance with various aspects of the present disclosure.
  • FIG. 7A is a diagram illustrating an example of another measurement gap configuration, in accordance with various aspects of the present disclosure.
  • FIG. 7B is a diagram illustrating an example of another measurement gap configuration, in accordance with various aspects of the present disclosure.
  • FIG. 8 is a network connection flow diagram showing a UE configured to apply a measurement gap configuration from a network entity, in accordance with various aspects of the present disclosure.
  • FIG. 9 is another network connection flow diagram showing a UE configured to apply a measurement gap configuration from a network entity, in accordance with various aspects of the present disclosure.
  • FIG. 10 is a flowchart of a method of wireless communication.
  • FIG. 11 is a flowchart of a method of wireless communication.
  • FIG. 12 is a flowchart of a method of wireless communication.
  • FIG. 13 is a flowchart of a method of wireless communication.
  • FIG. 14 is a diagram illustrating an example of a hardware implementation for an example apparatus and/or network entity.
  • FIG. 15 is a diagram illustrating an example of a hardware implementation for an example network entity.
  • processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems on a chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure.
  • processors in the processing system may execute software.
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.
  • the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer.
  • such computer-readable media can include a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable ROM
  • optical disk storage magnetic disk storage
  • magnetic disk storage other magnetic storage devices
  • combinations of the types of computer-readable media or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
  • aspects, implementations, and/or use cases are described in this application by illustration to some examples, additional or different aspects, implementations and/or use cases may come about in many different arrangements and scenarios. Aspects, implementations, and/or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, implementations, and/or use cases may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) .
  • non-module-component based devices e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc.
  • OFEM original equipment manufacturer
  • Deployment of communication systems may be arranged in multiple manners with various components or constituent parts.
  • a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment, such as a base station (BS) , or one or more units (or one or more components) performing base station functionality may be implemented in an aggregated or disaggregated architecture.
  • a BS such as a Node B (NB) , evolved NB (eNB) , NR BS, 5G NB, access point (AP) , a transmit receive point (TRP) , or a cell, etc.
  • NB Node B
  • eNB evolved NB
  • NR BS 5G NB
  • AP access point
  • TRP transmit receive point
  • a cell etc.
  • a BS may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station.
  • An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node.
  • a disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) .
  • a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes.
  • the DUs may be implemented to communicate with one or more RUs.
  • Each of the CU, DU and RU can be implemented as virtual units, i.e., a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) .
  • VCU virtual central unit
  • VDU virtual distributed unit
  • Base station operation or network design may consider aggregation characteristics of base station functionality.
  • disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) .
  • Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design.
  • the various units of the disaggregated base station, or disaggregated RAN architecture can be configured for wired or wireless communication with at least one other unit.
  • FIG. 1 is a diagram 100 illustrating an example of a wireless communications system and an access network.
  • the illustrated wireless communications system includes a disaggregated base station architecture.
  • the disaggregated base station architecture may include one or more CUs 110 that can communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 125 via an E2 link, or a Non-Real Time (Non-RT) RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both) .
  • a CU 110 may communicate with one or more DUs 130 via respective midhaul links, such as an F1 interface.
  • the DUs 130 may communicate with one or more RUs 140 via respective fronthaul links.
  • the RUs 140 may communicate with respective UEs 104 via one or more radio frequency (RF) access links.
  • RF radio frequency
  • the UE 104 may be simultaneously served by multiple RUs 140.
  • Each of the units may include one or more interfaces or be coupled to one or more interfaces configured to receive or to transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium.
  • Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units can be configured to communicate with one or more of the other units via the transmission medium.
  • the units can include a wired interface configured to receive or to transmit signals over a wired transmission medium to one or more of the other units.
  • the units can include a wireless interface, which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) , configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.
  • a wireless interface which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) , configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.
  • the CU 110 may host one or more higher layer control functions.
  • control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • SDAP service data adaptation protocol
  • Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 110.
  • the CU 110 may be configured to handle user plane functionality (i.e., Central Unit –User Plane (CU-UP) ) , control plane functionality (i.e., Central Unit –Control Plane (CU-CP) ) , or a combination thereof.
  • the CU 110 can be logically split into one or more CU-UP units and one or more CU-CP units.
  • the CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as an E1 interface when implemented in an O-RAN configuration.
  • the CU 110 can be implemented to communicate with
  • the DU 130 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 140.
  • the DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, or the like) depending, at least in part, on a functional split, such as those defined by 3GPP.
  • RLC radio link control
  • MAC medium access control
  • PHY high physical layers
  • the DU 130 may further host one or more low PHY layers.
  • Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 130, or with the control functions hosted by the CU 110.
  • Lower-layer functionality can be implemented by one or more RUs 140.
  • an RU 140 controlled by a DU 130, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split.
  • the RU (s) 140 can be implemented to handle over the air (OTA) communication with one or more UEs 104.
  • OTA over the air
  • real-time and non-real-time aspects of control and user plane communication with the RU (s) 140 can be controlled by the corresponding DU 130.
  • this configuration can enable the DU (s) 130 and the CU 110 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
  • the SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements.
  • the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements that may be managed via an operations and maintenance interface (such as an O1 interface) .
  • the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) .
  • a cloud computing platform such as an open cloud (O-Cloud) 190
  • network element life cycle management such as to instantiate virtualized network elements
  • a cloud computing platform interface such as an O2 interface
  • Such virtualized network elements can include, but are not limited to, CUs 110, DUs 130, RUs 140 and Near-RT RICs 125.
  • the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 111, via an O1 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 140 via an O1 interface.
  • the SMO Framework 105 also may include a Non-RT RIC 115 configured to support functionality of the SMO Framework 105.
  • the Non-RT RIC 115 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) /machine learning (ML) (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 125.
  • the Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125.
  • the Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 110, one or more DUs 130, or both, as well as an O-eNB, with the Near-RT RIC 125.
  • the Non-RT RIC 115 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. In some examples, the Non-RT RIC 115 or the Near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 115 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
  • SMO Framework 105 such as reconfiguration via O1
  • A1 policies such as A1 policies
  • a base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component indicated with dotted lines to signify that each component may or may not be included in the base station 102) .
  • the base station 102 provides an access point to the core network 120 for a UE 104.
  • the base stations 102 may include macrocells (high power cellular base station) and/or small cells (low power cellular base station) .
  • the small cells include femtocells, picocells, and microcells.
  • a network that includes both small cell and macrocells may be known as a heterogeneous network.
  • a heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) .
  • the communication links between the RUs 140 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to an RU 140 and/or downlink (DL) (also referred to as forward link) transmissions from an RU 140 to a UE 104.
  • the communication links may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity.
  • the communication links may be through one or more carriers.
  • the base stations 102 /UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction.
  • the carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocatsed for DL than for UL) .
  • the component carriers may include a primary component carrier and one or more secondary component carriers.
  • a primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
  • PCell primary cell
  • SCell secondary cell
  • D2D communication link 158 may use the DL/UL wireless wide area network (WWAN) spectrum.
  • the D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) .
  • sidelink channels such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) .
  • D2D communication may be through a variety of wireless D2D communications systems, such as for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.
  • IEEE Institute of Electrical and Electronics Engineers
  • the wireless communications system may further include a Wi-Fi AP 150 in communication with UEs 104 (also referred to as Wi-Fi stations (STAs) ) via communication link 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like.
  • UEs 104 also referred to as Wi-Fi stations (STAs)
  • communication link 154 e.g., in a 5 GHz unlicensed frequency spectrum or the like.
  • the UEs 104 /AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
  • CCA clear channel assessment
  • FR1 frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles.
  • FR2 which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
  • EHF extremely high frequency
  • ITU International Telecommunications Union
  • FR3 7.125 GHz –24.25 GHz
  • FR3 7.125 GHz –24.25 GHz
  • Frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics, and thus may effectively extend features of FR1 and/or FR2 into mid-band frequencies.
  • higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz.
  • FR2-2 52.6 GHz –71 GHz
  • FR4 71 GHz –114.25 GHz
  • FR5 114.25 GHz –300 GHz
  • sub-6 GHz may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies.
  • millimeter wave or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and/or FR5, or may be within the EHF band.
  • the base station 102 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and/or antenna arrays to facilitate beamforming.
  • the base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmit directions.
  • the UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions.
  • the UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmit directions.
  • the base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions.
  • the base station 102 /UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 102 /UE 104.
  • the transmit and receive directions for the base station 102 may or may not be the same.
  • the transmit and receive directions for the UE 104 may or may not be the same.
  • the base station 102 may include and/or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a transmit reception point (TRP) , network node, network entity, network equipment, or some other suitable terminology.
  • the base station 102 can be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and an RU, or as a disaggregated base station including one or more of a CU, a DU, and/or an RU.
  • the set of base stations which may include disaggregated base stations and/or aggregated base stations, may be referred to as next generation (NG) RAN (NG-RAN) .
  • NG next generation
  • NG-RAN next generation
  • the core network 120 may include an Access and Mobility Management Function (AMF) 161, a Session Management Function (SMF) 162, a User Plane Function (UPF) 163, a Unified Data Management (UDM) 164, one or more location servers 168, and other functional entities.
  • the AMF 161 is the control node that processes the signaling between the UEs 104 and the core network 120.
  • the AMF 161 supports registration management, connection management, mobility management, and other functions.
  • the SMF 162 supports session management and other functions.
  • the UPF 163 supports packet routing, packet forwarding, and other functions.
  • the UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identification handling, access authorization, and subscription management.
  • AKA authentication and key agreement
  • the one or more location servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166.
  • the one or more location servers 168 may include one or more location/positioning servers, which may include one or more of the GMLC 165, the LMF 166, a position determination entity (PDE) , a serving mobile location center (SMLC) , a mobile positioning center (MPC) , or the like.
  • the GMLC 165 and the LMF 166 support UE location services.
  • the GMLC 165 provides an interface for clients/applications (e.g., emergency services) for accessing UE positioning information.
  • the LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to compute the position of the UE 104.
  • the NG-RAN may utilize one or more positioning methods in order to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, a position estimate, and an optional velocity computation based on the measurements. The signal measurements may be made by the UE 104 and/or the serving base station 102.
  • the signals measured may be based on one or more of a satellite positioning system (SPS) 170 (e.g., one or more of a Global Navigation Satellite System (GNSS) , global position system (GPS) , non-terrestrial network (NTN) , or other satellite position/location system) , LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS) , sensor-based information (e.g., barometric pressure sensor, motion sensor) , NR enhanced cell ID (NR E-CID) methods, NR signals (e.g., multi-round trip time (Multi-RTT) , DL angle-of-departure (DL-AoD) , DL time difference of arrival (DL-TDOA) , UL time difference of arrival (UL-TDOA) , and UL angle-of-arrival (UL-AoA) positioning) , and/or other systems/signals/sensors.
  • SPS satellite positioning system
  • GNSS Global Navigation Satellite
  • Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA) , a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player) , a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor/actuator, a display, or any other similar functioning device.
  • SIP session initiation protocol
  • PDA personal digital assistant
  • Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) .
  • the UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.
  • the term UE may also apply to one or more companion devices such as in a device constellation arrangement. One or more of these devices may collectively access the network and/or individually access the network.
  • the UE 104 may have a measurement gap application component 198 configured to receive DCI or a MAC-CE indicating at least one measurement gap configuration.
  • the measurement gap application component 198 may be configured to apply the at least one measurement gap configuration after at least one time offset.
  • the base station 102 may have a measurement gap configuration component 199 configured to transmit DCI or a MAC-CE indicating at least one measurement gap configuration.
  • the measurement gap configuration component 199 may be configured to output an indication to transmit a measurement signal during a measurement gap based on the at least one measurement gap configuration. For example, the indication may be output to a transceiver of the network entity, or to a second network entity.
  • the concepts described herein may be applicable to other similar areas, such as measurement gaps to measure any reference signal (RS) or positioning processing windows (PPWs) .
  • RS reference signal
  • PGWs positioning processing windows
  • the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.
  • FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure.
  • FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe.
  • FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure.
  • FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe.
  • the 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL.
  • FDD frequency division duplexed
  • TDD time division duplexed
  • the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL/UL, and subframe 3 being configured with slot format 1 (with all UL) . While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols.
  • UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi-statically/statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) .
  • DCI DL control information
  • RRC radio resource control
  • SFI received slot format indicator
  • FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and/or different channels.
  • a frame (10 ms) may be divided into 10 equally sized subframes (1 ms) .
  • Each subframe may include one or more time slots.
  • Subframes may also include mini-slots, which may include 7, 4, or 2 symbols.
  • Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended.
  • CP cyclic prefix
  • the symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols.
  • OFDM orthogonal frequency division multiplexing
  • the symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also referred to as single carrier frequency-division multiple access (SC-FDMA) symbols) (for power limited scenarios; limited to a single stream transmission) .
  • DFT discrete Fourier transform
  • SC-FDMA single carrier frequency-division multiple access
  • the number of slots within a subframe is based on the CP and the numerology.
  • the numerology defines the subcarrier spacing (SCS) and, effectively, the symbol length/duration, which is equal to 1/SCS.
  • the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology ⁇ , there are 14 symbols/slot and 2 ⁇ slots/subframe.
  • the symbol length/duration is inversely related to the subcarrier spacing.
  • the slot duration is 0.25 ms
  • the subcarrier spacing is 60 kHz
  • the symbol duration is approximately 16.67 ⁇ s.
  • BWPs bandwidth parts
  • Each BWP may have a particular numerology and CP (normal or extended) .
  • a resource grid may be used to represent the frame structure.
  • Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 12 consecutive subcarriers.
  • RB resource block
  • PRBs physical RBs
  • the resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
  • the RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE.
  • DM-RS demodulation RS
  • CSI-RS channel state information reference signals
  • the RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
  • BRS beam measurement RS
  • BRRS beam refinement RS
  • PT-RS phase tracking RS
  • FIG. 2B illustrates an example of various DL channels within a subframe of a frame.
  • the physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs) , each CCE including six RE groups (REGs) , each REG including 12 consecutive REs in an OFDM symbol of an RB.
  • CCEs control channel elements
  • REGs RE groups
  • a PDCCH within one BWP may be referred to as a control resource set (CORESET) .
  • CORESET control resource set
  • a UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and/or lower frequencies across the channel bandwidth.
  • a primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe/symbol timing and a physical layer identity.
  • a secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing.
  • the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the DM-RS.
  • the physical broadcast channel (PBCH) which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) /PBCH block (also referred to as SS block (SSB) ) .
  • the MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) .
  • the physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
  • SIBs system information blocks
  • some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station.
  • the UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) .
  • the PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH.
  • the PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used.
  • the UE may transmit sounding reference signals (SRS) .
  • the SRS may be transmitted in the last symbol of a subframe.
  • the SRS may have a comb structure, and a UE may transmit SRS on one of the combs.
  • the SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
  • FIG. 2D illustrates an example of various UL channels within a subframe of a frame.
  • the PUCCH may be located as indicated in one configuration.
  • the PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and/or negative ACK (NACK) ) .
  • the PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and/or UCI.
  • BSR buffer status report
  • PHR power headroom report
  • FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network.
  • IP Internet protocol
  • the controller/processor 375 implements layer 3 and layer 2 functionality.
  • Layer 3 includes a radio resource control (RRC) layer
  • layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC medium access control
  • the controller/processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release) , inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression /decompression, security (ciphering, deciphering, integrity protection, integrity verification) , and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs) , demultiplexing of MAC SDU
  • the transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions.
  • Layer 1 which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding/decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation/demodulation of physical channels, and MIMO antenna processing.
  • the TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) .
  • BPSK binary phase-shift keying
  • QPSK quadrature phase-shift keying
  • M-PSK M-phase-shift keying
  • M-QAM M-quadrature amplitude modulation
  • the coded and modulated symbols may then be split into parallel streams.
  • Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream.
  • IFFT Inverse Fast Fourier Transform
  • the OFDM stream is spatially precoded to produce multiple spatial streams.
  • Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing.
  • the channel estimate may be derived from a reference signal and/or channel condition feedback transmitted by the UE 350.
  • Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx.
  • Each transmitter 318Tx may modulate a radio frequency (RF) carrier with a respective spatial stream for transmission.
  • RF radio frequency
  • each receiver 354Rx receives a signal through its respective antenna 352.
  • Each receiver 354Rx recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356.
  • the TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions.
  • the RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream.
  • the RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT) .
  • FFT Fast Fourier Transform
  • the frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal.
  • the symbols on each subcarrier, and the reference signal are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358.
  • the soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel.
  • the data and control signals are then provided to the controller/processor 359, which implements layer 3 and layer 2 functionality.
  • the controller/processor 359 can be associated with a memory 360 that stores program codes and data.
  • the memory 360 may be referred to as a computer-readable medium.
  • the controller/processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets.
  • the controller/processor 359 is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations.
  • the controller/processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression /decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
  • RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting
  • PDCP layer functionality associated with
  • Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing.
  • the spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.
  • the UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350.
  • Each receiver 318Rx receives a signal through its respective antenna 320.
  • Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
  • the controller/processor 375 can be associated with a memory 376 that stores program codes and data.
  • the memory 376 may be referred to as a computer-readable medium.
  • the controller/processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets.
  • the controller/processor 375 is also responsible for error detection using an ACK and/or NACK protocol to support HARQ operations.
  • At least one of the TX processor 368, the RX processor 356, and the controller/processor 359 may be configured to perform aspects in connection with the measurement gap application component 198 of FIG. 1.
  • At least one of the TX processor 316, the RX processor 370, and the controller/processor 375 may be configured to perform aspects in connection with the measurement gap configuration component 199 of FIG. 1.
  • FIG. 4A is a diagram 400 illustrating an example of a UE 402 in a network zone 420 configured to communicate with candidate primary cells (PCells) 404, 406, 408, and 410.
  • PCells candidate primary cells
  • Each of the candidate PCells 404, 406, 408, and 410 may be a candidate PCell for the UE 402.
  • the selected candidate PCell may be the PCell of the UE 402.
  • the serving cell for the UE 402 may move from one PCell to another PCell.
  • the UE 402 may be configured to move its PCell from the candidate PCell 406 to the candidate PCell 408.
  • a single PCell may change without carrier aggregation (CA) among the set of candidate PCells 404, 406, 408, and 410 with respect to the UE 402.
  • CA carrier aggregation
  • FIG. 4B is a diagram 450 illustrating an example of a UE 452 in a network zone 470 configured to communicate with candidate cells 454, 456, 458, and 460.
  • Each of the candidate cells 454, 456, 458, and 460 may be a candidate PCell for the UE 452.
  • the selected candidate PCell may be the PCell of the UE 452 while the unselected candidate PCells may be the SCells of the UE 452.
  • the serving cell for the UE 452 may move from one PCell to another PCell.
  • the UE 452 may be configured to select the candidate cell 456 as its PCell, which renders candidate cells 456, 458, and 460 as SCells of the UE 452.
  • the UE 452 may be configured to swap its PCell with one of the SCells among the set of candidate cells 454, 456, 458, and 460.
  • the UE 452 may swap the selection of the candidate cell 456 as its PCell with the selection of the candidate cell 458 for its SCell, which would make the candidate cell 456 change from the old PCell to a new SCell, and the candidate cell 458 change from an old SCell to the new PCell.
  • the UE 452 may swap a PCell and an SCell in CA from among the candidate cells 454, 456, 458, and 460.
  • FIG. 5 is a diagram 500 illustrating an example of a UE 502 in a network zone 520 configured to communicate with one or more candidate cell groups (CGs) , such as candidate CGs 504, 506, 508, and 510.
  • CGs candidate cell groups
  • Each of the candidate CGs 504, 506, 508, and 510 may have a set of cells, each of which may have a PCell and a set of SCells.
  • the selected CG may have a cell that is designated as the PCell of the UE 502 while the unselected cells of the CG may be the SCells of the UE 502.
  • the serving group for the UE 502 may move from one CG to another CG.
  • the special cell and the serving cell of the UE 502 may be switched together in the case of CA.
  • the UE 502 may be configured to select the candidate CG 506 as its serving CG.
  • the UE 502 may be configured to swap its CG with one of the candidate CGs among the set of candidate CGs 504, 506, 508, and 510.
  • the UE 502 may swap the selection of the candidate CG 506 as its serving CG with the selection of the candidate CG 508 as a candidate CG, which would make the candidate CG 506 change from the serving CG to a candidate CG, and the candidate CG 508 change from a candidate CG to the new serving CG.
  • the serving CG for the UE 502 may swap with one another among the candidate CGs 504, 506, 508, and 510.
  • the UE may be configured to perform one or more measurements on a candidate cell during a measurement gap.
  • a measurement gap may be a time when a UE may measure DL signals as the UE does not have any scheduled UL or DL transmissions.
  • FIG. 6 is a diagram 600 illustrating an example of a measurement gap configuration for a UE.
  • a measurement gap configuration may indicate parameters applied for the measurement gaps, such as a gap periodicity, a gap length, and a time offset,
  • the UE may have a series of system frame numbers (SFNs) 602, 604, 606, 608, and 610. Each of the SFNs may have ten slots of 1 millisecond (ms) each.
  • the UE may have a measurement gap configuration of a measurement gap at slots 5, 6, 7, and 8 of SFN 602 and slots 5, 6, 7, and 8 of SFN 608.
  • the UE may have a measurement gap configuration having a periodic measurement gap having a gap length 614 of 4 ms and a gap periodicity 612 of 40 ms.
  • a UE such as the UE 104 in FIG. 1, may be configured with one or more measurement gaps, during which the UE may measure one or more measurement signals.
  • measurement signals may include, for example, synchronization signal blocks (SSBs) .
  • the SSBs may not be transmitted from the UEs serving cell, and may be transmitted from the UEs candidate cells, such as candidate Pcells, secondary cells or cells from a candidate CG.
  • a source cell (i.e., serving cell) and a target cell (i.e., candidate cell) may not be synchronized with one another (i.e., the SFNs may not start at the same time) .
  • Source cells and target cells may not be synchronized with one another for a variety of reasons, for example the cells may communicate with the UE using different frequencies, or propagation delay may prevent the cells from synchronizing with one another.
  • a UE may use a period of RF tuning time to measure a signal from another candidate cell, and may also use a period of RF tuning time to switch back to its serving cell.
  • a UE may have a configured measurement gap and a configured measurement gap offset that provides the UE with RF tuning time to accommodate non-synchronized signals.
  • a network entity may be configured to transmit DCI or a MAC-CE indicating at least one measurement gap configuration.
  • a UE may be configured to receive the DCI or the MAC-CE indicating the at least one measurement gap configuration.
  • the network entity may be configured to output an indication to transmit a measurement signal during a measurement gap based on at least one time offset of the at least one measurement gap configuration.
  • the indication may be output to a second network entity or to a transceiver of the network entity.
  • the UE may be configured to apply the at least one measurement gap configuration after the at least one time offset.
  • FIG. 7A is a diagram 700 illustrating an example of a measurement gap configuration for a UE, such as the UE 104 in FIG. 1.
  • the UE may have a series of system frame numbers (SFNs) 702, 704, 706, 708, and 710.
  • SFNs system frame numbers
  • Each of the SFNs may have 10*2 u slots.
  • the value of u may depend on the subcarrier spacing. For example, in frequency range 1 where subcarrier spacing is 15Khz, each of the SFNs may have 10 slots of 1 millisecond (ms) each.
  • the UE may have a measurement gap configuration of a measurement gap at slots 1, 2, 3, and 4 of SFN 702 and slots 1, 2, 3, and 4 of SFN 704. In other words, the UE may have a measurement gap configuration having a periodic measurement gap having a gap length of 4 slots or ms and a gap periodicity of one SFN, or 10 ms.
  • the UE may be configured to have multiple candidate cells as candidate Pcells for layer 1 (L1) and/or layer 2 (L2) based mobility purposes, such as the candidate Pcells 404, 406, 408, and 410 in FIG. 4A.
  • the UE may be configured with a set of measurement gap configurations via RRC scheduling for L1 measurements for each candidate cell of the set of candidate cells.
  • a network entity may be configured to provide a measurement gap configuration 712 to the UE at slot 5 of SFN 704.
  • the measurement gap configuration 712 may be, for example, L2 signaling, such as MAC-CE, which may indicate one or more measurement gap configurations to be activated by the UE from the multiple measurement gap configurations configured by RRC signaling.
  • the measurement gap configuration 712 may indicate the measurement gap configuration to be applied for a candidate cell.
  • the UE may transmit an acknowledgment (ACK) 714 for the measurement gap configuration 712.
  • ACK acknowledgment
  • the UE may apply the indicated measurement gap configuration 712 after a time offset from the ACK to the PDSCH carrying the MAC-CE.
  • the time offset may be several slots or ms.
  • the UE may apply the indicated measurement gap configuration 712 four slots or four ms after the ACK 714.
  • the new measurement gap configuration may start two slots after the new measurement configuration 716 starts at slot 1 of SFN 706, having a measurement gap at slots 3, 4, 5, 6, 7, and 8 of SFN 706 and slots 3, 4, 5, 6, 7, and 8 of SFN 710.
  • the UE may have a measurement gap configuration having a periodic measurement gap having a gap length of 6 slots or ms and a gap periodicity of two SFN, or 20 ms.
  • L2 signaling such as MAC-CE in the measurement gap configuration 712 may indicate for the UE to deactivate one or more measurement gap configurations from the one or more activated measurement gap configurations.
  • the measurement gap configuration 712 may indicate the UE to deactivate an indicated measurement gap configuration after a time offset (i.e., a number of slots/ms) from the ACK to the PDSCH carrying the MAC-CE.
  • the time offset may also be referred to as a gap offset or a measurement gap offset.
  • a MAC-CE may be configured to down-select a subset of measurement gap configurations as active measurement gaps for a candidate cell.
  • the MAC-CE may down-select the subset of measurement gap configurations from a set of measurement gap configurations provided to the UE in an RRC configuration.
  • a DCI in a serving cell of the UE may indicate one or more measurement gap configurations for a candidate cell from the subset activated by the MAC-CE.
  • the DCI may be a dedicated DCI, or may be a DL DCI with special fields interpreted for measurement gap selection.
  • the DL DCI may be in a format DCI1_0 or DCI1_1.
  • the DCI may have one or more DCI fields that indicate one or more measurement gap configuration IDs.
  • the UE may provide an ACK/NACK to the DCI, such as the ACK 714, to the DCI in any suitable manner.
  • the serving cell may then output a signal to a candidate cell to transmit a measurement signal, such as an SSB.
  • the ACK to the PDSCH may serve as the ACK to the DCI.
  • the DCI schedules an UL signal e.g., PUSCH
  • the transmission of the UL signal may serve as the ACK to the DCI.
  • the UE may be configured to apply the measurement gap configuration 712 after a measurement gap offset from the ACK to the DCI.
  • the UE may be indicated with one or more aperiodic measurement gaps.
  • the number of aperiodic measurement gaps and the time offsets for applying the aperiodic measurement gaps may be indicated by a DCI, or may be configured in a MAC-CE or an RRC configuration.
  • the measurement gap configuration 712 may have one or more periodic or semi-persistent measurement gaps.
  • the DCI may also indicate when the UE is to deactivate one or more of the measurement gap configurations.
  • FIG. 7B is a diagram 750 illustrating an example of a measurement gap configuration for a UE, such as the UE 104 in FIG. 1.
  • the UE may have a series of system frame numbers (SFNs) 752, 754, 756, 758, and 760.
  • SFNs system frame numbers
  • Each of the SFNs may have ten slots of 1 millisecond (ms) each.
  • the UE may have a measurement gap configuration of a measurement gap at slots 1, 2, 3, and 4 of SFN 752 and slots 1, 2, 3, and 4 of SFN 754.
  • the UE may have a measurement gap configuration having a periodic measurement gap having a gap length of 4 slots or ms and a gap periodicity of one SFN, or 10 ms.
  • the UE may receive a MAC-CE or a DCI from a network entity to apply a measurement gap configuration 762 for a candidate cell for a L1/L2 mobility purpose.
  • the UE may transmit an ACK/NACK 764 in response to the measurement gap configuration 762, and may wait for an application time 766 before applying a measurement gap offset 768.
  • the UE may apply the measurement gap configuration 762 received from the network entity.
  • the new measurement gap configuration may have a measurement gap at slots 2, 3, 4, 5, 6, and 7 of SFN 756 and slots 2, 3, 4, 5, 6, and 7 of SFN 760.
  • the UE may have a measurement gap configuration having a periodic measurement gap having a gap length of 6 slots or ms and a gap periodicity of two SFN, or 20 ms.
  • the UE may have a measurement gap offset configured in any suitable manner.
  • a network entity may provide the time offset for the UE via RRC configuration.
  • the first measurement gap of a set of measurement gaps may be derived by the UE based on the measurement periodicity and the time offset provided by the RRC configuration.
  • a network entity may provide the time offset in a MAC-CE that indicates the measurement gap ID of a set of measurement gaps provided via RRC configuration.
  • the first measurement gap of a set of measurement gaps may be derived by the UE based on the indicated time offset counted from the application time after the ACK to the MAC-CE, such as the application time 766 after the ACK/NACK 764 of the measurement gap configuration 762.
  • a network entity may provide the time offset in DCI that indicates the measurement gap ID of a set of measurement gaps provided via RRC configuration.
  • the first measurement gap of a set of measurement gaps may be derived by the UE based on the indicated time offset counted from the application time after the ACK to the DCI, such as the application time 766 after the ACK/NACK 764 of the measurement gap configuration 762.
  • FIG. 8 is a network connection flow diagram 800 showing a UE 802 configured to apply a measurement gap configuration from a network entity 804.
  • the network entity 804 may output an RRC configuration 808 to the UE 802.
  • the UE 802 may receive the RRC configuration 808 from the network entity 804.
  • the RRC configuration 808 may indicate a set of measurement gap configurations and/or a set of measurement gap offsets.
  • the RRC configuration 808 may include a set of measurement gap configurations as a table that may have one or more measurement gap configurations that may be selected by an index. A field of a DCI or a MAC-CE may select a subset of the measurement gap configurations of the table.
  • the RRC configuration 808 may include L1 measurements for each candidate cell of the UE 802.
  • the RRC configuration 808 may include a first set of measurement gap configurations associated with a first candidate cell and a second set of measurement gap configurations associated with a second candidate cell.
  • the RRC configuration 808 may include a set of measurement gap offsets as a table that may have one or more measurement gap offsets that may be selected by an index.
  • a field of a DCI or a MAC-CE may select a subset of the measurement gap offsets of the table.
  • an measurement gap configuration may have one or more measurement gap offsets.
  • a measurement gap configuration may have a measurement periodicity and a measurement gap offset.
  • a measurement periodicity may be provided as a number of slots, a number of symbols, or as a number of milliseconds.
  • a measurement gap offset may be provided as a number of slots, a number of symbols, or as a number of milliseconds.
  • the network entity 804 may output an indication 810 of one or more measurement gap configurations to the UE 802.
  • the UE 802 may receive the indication 810 of the one or more measurement gap configurations from the network entity 804.
  • the one or more indicated measurement gap configurations may include one or more aperiodic or one-shot measurement gaps, and/or may include one or more periodic or semi-persistent measurement gaps.
  • the indication 810 of the one or more measurement gap configurations may be provided in any suitable manner.
  • the indication 810 of the one or more measurement gap configurations may be a MAC-CE that indicates one or more measurement gap configurations.
  • the MAC-CE may indicate for the UE 802 to activate a set of measurement gaps, deactivate a set of measurement gaps, or activate a set of measurement gaps until a trigger is detected by the UE 802 (e.g., a period of time has passed, a number of threshold measurements have been collected) .
  • the MAC-CE may indicate for the UE 802 to deactivate the set of measurement gaps in response to the trigger being detected.
  • the MAC-CE may be configured to down-select a subset of measurement gap configurations as active measurement gaps for one or more candidate cells.
  • the MAC-CE may indicate a measurement gap ID and/or a measurement gap offset.
  • the indication 810 of the one or more measurement gap configurations may be DCI that schedules one or more transmissions.
  • the DCI may be transmitted to the UE 802 by a serving cell of the UE 802.
  • the DCI may indicate one or more measurement gap configurations for a candidate cell.
  • the DCI may select one or more measurement gap configurations selected by a MAC-CE.
  • the DCI may be a dedicated DCI.
  • the DCI may be a DL DCI.
  • the DCI may be in a format DCI1_0 or DCI1_1.
  • the DCI may have one or more DCI fields that indicate one or more measurement gap configuration IDs.
  • a DCI field may be an index to a table provided by the RRC configuration 808.
  • the DCI may indicate to activate or deactivate a measurement gap configuration.
  • the DCI may indicate for the UE 802 to activate a set of measurement gaps, deactivate a set of measurement gaps, or activate a set of measurement gaps until a trigger is detected by the UE 802 (e.g., a period of time has passed, a number of threshold measurements have been collected) .
  • the DCI may indicate for the UE 802 to deactivate the set of measurement gaps in response to the trigger being detected.
  • the DCI may indicate one or more measurement gap IDs.
  • the DCI may also or alternatively indicate a time offset.
  • the DCI may also schedule other transmissions in addition to providing the indication 810 of one or more measurement gap configurations.
  • the DCI may schedule a PDSCH in addition to providing the indication 810 of one or more measurement gap configurations.
  • the DCI may schedule an UL signal, such as a PUSCH or a PUCCH, in addition to providing the indication 810 of one or more measurement gap configurations.
  • the UE 802 may transmit an ACK/NACK 812 to the network entity 804.
  • the network entity 804 may obtain the ACK/NACK 812 from the UE 802.
  • the ACK/NACK 812 may be transmitted in response to the indication 810 of the MG configuration.
  • the indication 810 of the one or more measurement gap configurations includes a MAC-CE or a DCI
  • the UE 802 may transmit an ACK/NACK 812 to the network entity in response.
  • the ACK/NACK 812 may include one or more of the measurement gap configuration IDs indicated by the indication 810 of the one or more measurement gap configurations.
  • an ACK to a DCI or a MAC-CE indicating one or more measurement gap configurations may include an index to one or more selected measurement gap configurations.
  • the network entity 804 may be configured to output one or more measurement gap signals 818 in response to obtaining an indication of an ACK from the UE 802. For example, in response to receiving an ACK to a DCI or a MAC-CE indicating one or more measurement gap configurations, the network entity 804 may output the one or more measurement gap signals 818 during one or more configured measurement gap periods.
  • the UE 802 may indicate an ACK in other ways.
  • the indication 810 of the one or more measurement gap configurations includes a DCI scheduling a PDSCH
  • the ACK/NACK 812 maty be an ACK/NACK to the scheduled PDSCH.
  • the UE 802 may transmit an ACK/NACK to the scheduled PDSCH.
  • the network entity 804 may obtain the ACK/NACK to the scheduled PDSCH.
  • the network entity 804 may output the one or more measurement gap signals 818 during one or more configured measurement gap periods.
  • the ACK/NACK 812 may be a transmission of the scheduled UL signal.
  • the UE 802 may transmit the scheduled UL signal.
  • the network entity 804 may obtain the transmitted UL signal.
  • the network entity 804 may output the one or more measurement gap signals 818 during one or more configured measurement gap periods.
  • the UE 802 may apply the one or more measurement gap configurations after one or more time offsets.
  • the one or more time offsets may be configured by the UE 802.
  • the one or more time offsets may be configured by the indication 810 of the one or more measurement gap configurations.
  • the one or more time offsets may be a number of slots, milliseconds, or symbols.
  • the UE 802 may apply an indicated measurement gap configuration after transmitting an indication of an ACK, such as an ACK to a DCI, an ACK to a MAC-CE, an ACK to a schedule PDSCH, or a transmission of an UL signal.
  • the UE 802 may apply an indicated measurement gap configuration after an application time to an indication of an ACK, such as an ACK to a DCI, an ACK to a MAC-CE, an ACK to a schedule PDSCH, or a transmission of an UL signal.
  • the UE 802 may apply an indicated measurement gap configuration after a corresponding time offset from an ACK to the PDSCH carrying DCI or an application time to the ACK to the PDSCH carrying DCI.
  • the UE 802 may apply an indicated measurement gap configuration after a corresponding time offset from an ACK to the PDSCH carrying a MAC-CE or an application time to the ACK to the PDSCH carrying the MAC-CE.
  • the UE 802 may apply an indicated measurement gap configuration after a corresponding time offset from an ACK to a PDSCH scheduled by DCI or an application time to the ACK to the PDSCH scheduled by the DCI. In one aspect, the UE 802 may apply an indicated measurement gap configuration after a corresponding time offset from an UL signal scheduled by DCI or an application time to the UL signal scheduled by the DCI.
  • the network entity 804 may transmit the one or more measurement gap signals 818 to the UE 802 during the one or more measurement gaps indicated by the indication 810 of the one or more measurement gap configurations and applied at 814.
  • FIG. 9 is a network connection flow diagram 900 showing a UE 902 configured to apply a measurement gap configuration from a network entity 904.
  • the network entity 904 may output an RRC configuration 908 to the UE 902.
  • the UE 902 may receive the RRC configuration 908 from the network entity 904.
  • the RRC configuration 908 may indicate a set of measurement gap configurations and/or a set of measurement gap offsets.
  • the RRC configuration 908 may include a set of measurement gap configurations as a table that may have one or more measurement gap configurations that may be selected by an index. A field of a DCI or a MAC-CE may select a subset of the measurement gap configurations of the table.
  • the RRC configuration 908 may include L1 measurements for each candidate cell of the UE 902.
  • the RRC configuration 908 may include a first set of measurement gap configurations associated with a first candidate cell and a second set of measurement gap configurations associated with a second candidate cell.
  • the RRC configuration 908 may include a set of measurement gap offsets as a table that may have one or more measurement gap offsets that may be selected by an index. A field of a DCI or a MAC-CE may select a subset of the measurement gap offsets of the table.
  • an measurement gap configuration may have one or more measurement gap offsets.
  • a measurement gap configuration may have a measurement periodicity and a measurement gap offset.
  • a measurement periodicity may be provided as a number of slots, a number of symbols, or as a number of milliseconds.
  • a measurement gap offset may be provided as a number of slots, a number of symbols, or as a number of milliseconds.
  • the network entity 904 may output an indication 910 of one or more measurement gap configurations to the UE 902.
  • the UE 902 may receive the indication 910 of the one or more measurement gap configurations from the network entity 904.
  • the one or more indicated measurement gap configurations may include one or more aperiodic or one-shot measurement gaps, and/or may include one or more periodic or semi-persistent measurement gaps.
  • the indication 910 of the one or more measurement gap configurations may be provided in any suitable manner.
  • the indication 910 of the one or more measurement gap configurations may be a MAC-CE that indicates one or more measurement gap configurations.
  • the MAC-CE may indicate for the UE 902 to activate a set of measurement gaps, deactivate a set of measurement gaps, or activate a set of measurement gaps until a trigger is detected by the UE 902 (e.g., a period of time has passed, a number of threshold measurements have been collected) .
  • the MAC-CE may indicate for the UE 902 to deactivate the set of measurement gaps in response to the trigger being detected.
  • the MAC-CE may be configured to down-select a subset of measurement gap configurations as active measurement gaps for one or more candidate cells.
  • the MAC-CE may indicate a measurement gap ID and/or a measurement gap offset.
  • the indication 910 of the one or more measurement gap configurations may be DCI that schedules one or more transmissions.
  • the DCI may be transmitted to the UE 902 by a serving cell of the UE 902.
  • the DCI may indicate one or more measurement gap configurations for a candidate cell.
  • the DCI may select one or more measurement gap configurations selected by a MAC-CE.
  • the DCI may be a dedicated DCI.
  • the DCI may be a DL DCI.
  • the DCI may be in a format DCI1_0 or DCI1_1.
  • the DCI may have one or more DCI fields that indicate one or more measurement gap configuration IDs.
  • a DCI field may be an index to a table provided by the RRC configuration 908.
  • the DCI may indicate to activate or deactivate a measurement gap configuration.
  • the DCI may indicate for the UE 902 to activate a set of measurement gaps, deactivate a set of measurement gaps, or activate a set of measurement gaps until a trigger is detected by the UE 902 (e.g., a period of time has passed, a number of threshold measurements have been collected) .
  • the DCI may indicate for the UE 902 to deactivate the set of measurement gaps in response to the trigger being detected.
  • the DCI may indicate one or more measurement gap IDs.
  • the DCI may also or alternatively indicate a time offset.
  • the DCI may also schedule other transmissions in addition to providing the indication 910 of one or more measurement gap configurations.
  • the DCI may schedule a PDSCH in addition to providing the indication 910 of one or more measurement gap configurations.
  • the DCI may schedule an UL signal, such as a PUSCH or a PUCCH, in addition to providing the indication 910 of one or more measurement gap configurations.
  • the UE 902 may transmit an ACK/NACK 912 to the network entity 904.
  • the network entity 904 may obtain the ACK/NACK 912 from the UE 902.
  • the ACK/NACK 912 may be transmitted in response to the indication 910 of the MG configuration.
  • the indication 910 of the one or more measurement gap configurations includes a MAC-CE or a DCI
  • the UE 902 may transmit an ACK/NACK 912 to the network entity in response.
  • the ACK/NACK 912 may include one or more of the measurement gap configuration IDs indicated by the indication 910 of the one or more measurement gap configurations.
  • an ACK to a DCI or a MAC-CE indicating one or more measurement gap configurations may include an index to one or more selected measurement gap configurations.
  • the network entity 904 may be configured to output an indication 916 to the network entity 906, such as a candidate cell, to transmit the one or more measurement gap signals 918, in response to obtaining an indication of an ACK from the UE 902.
  • the network entity 904 may output the indication 916 to transmit the one or more measurement gap signals 918 to the network entity 906.
  • the UE 902 may indicate an ACK in other ways.
  • the indication 910 of the one or more measurement gap configurations includes a DCI scheduling a PDSCH
  • the ACK/NACK 912 may be an ACK/NACK to the scheduled PDSCH.
  • the UE 902 may transmit an ACK/NACK to the scheduled PDSCH.
  • the network entity 904 may obtain the ACK/NACK to the scheduled PDSCH.
  • the network entity 904 may output the indication 916 to transmit the one or more measurement gap signals 918 to the network entity 906.
  • the ACK/NACK 912 may be a transmission of the scheduled UL signal.
  • the UE 902 may transmit the scheduled UL signal.
  • the network entity 904 may obtain the transmitted UL signal.
  • the network entity 904 may output the indication 916 to transmit the one or more measurement gap signals 918 to the network entity 906.
  • the network entity 906 may transmit the one or more measurement gap signals 918 to the UE 902 during the measurement gap indicated by the indication 910 of the measurement gap configuration and applied at 914.
  • the UE 902 may apply the one or more measurement gap configurations after one or more time offsets.
  • the one or more time offsets may be configured by the UE 902.
  • the one or more time offsets may be configured by the indication 910 of the one or more measurement gap configurations.
  • the one or more time offsets may be a number of slots, milliseconds, or symbols.
  • the UE 902 may apply an indicated measurement gap configuration after transmitting an indication of an ACK, such as an ACK to a DCI, an ACK to a MAC-CE, an ACK to a schedule PDSCH, or a transmission of an UL signal.
  • the UE 902 may apply an indicated measurement gap configuration after an application time to an indication of an ACK, such as an ACK to a DCI, an ACK to a MAC-CE, an ACK to a schedule PDSCH, or a transmission of an UL signal.
  • the UE 902 may apply an indicated measurement gap configuration after a corresponding time offset from an ACK to the PDSCH carrying DCI or an application time to the ACK to the PDSCH carrying DCI.
  • the UE 902 may apply an indicated measurement gap configuration after a corresponding time offset from an ACK to the PDSCH carrying a MAC-CE or an application time to the ACK to the PDSCH carrying the MAC-CE.
  • the UE 902 may apply an indicated measurement gap configuration after a corresponding time offset from an ACK to a PDSCH scheduled by DCI or an application time to the ACK to the PDSCH scheduled by the DCI. In one aspect, the UE 902 may apply an indicated measurement gap configuration after a corresponding time offset from an UL signal scheduled by DCI or an application time to the UL signal scheduled by the DCI.
  • the network entity 906 may transmit the one or more measurement gap signals 918 to the UE 902 during the one or more measurement gaps indicated by the indication 910 of the one or more measurement gap configurations and applied at 914.
  • FIG. 10 is a flowchart 1000 of a method of wireless communication.
  • the method may be performed by a UE (e.g., the UE 104, the UE 350, the UE 402, the UE 452, the UE 502, the UE 802, the UE 902; the apparatus 1404) .
  • the UE may receive DCI or a MAC-CE indicating at least one measurement gap configuration.
  • 1002 may be performed by the UE 802 in FIG. 8, which may receive DCI or a MAC-CE as the indication 810 of the at least one measurement gap configuration indicating at least one measurement gap configuration.
  • 1002 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may apply the at least one measurement gap configuration after at least one time offset.
  • 1004 may be performed by the UE 802 in FIG. 8, which may apply the at least one measurement gap configuration at 814 after at least one time offset such as the measurement gap offset 768.
  • 1004 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • FIG. 11 is a flowchart 1100 of a method of wireless communication.
  • the method may be performed by a UE (e.g., the UE 104, the UE 350, the UE 402, the UE 452, the UE 502, the UE 802, the UE 902; the apparatus 1404) .
  • the UE may receive DCI or a MAC-CE indicating at least one measurement gap configuration.
  • 1102 may be performed by the UE 802 in FIG. 8, which may receive DCI or a MAC-CE as the indication 810 of the at least one measurement gap configuration indicating at least one measurement gap configuration.
  • 1102 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may apply the at least one measurement gap configuration after at least one time offset.
  • 1104 may be performed by the UE 802 in FIG. 8, which may apply the at least one measurement gap configuration at 814 after at least one time offset such as the measurement gap offset 768.
  • 1104 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may receive an RRC configuration having a set of measurement gap configurations.
  • the DCI or the MAC-CE may indicate the at least one measurement gap configuration from the set of measurement gap configurations.
  • 1106 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may transmit an ACK/NACK in response to the DCI or the MAC-CE.
  • the ACK may have an indication to apply the at least one measurement gap configuration.
  • 1108 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the transceiver transmits, using the transceiver, an ACK/NACK in response to a PDSCH scheduled by the DCI.
  • the ACK may indicate applying the at least one measurement gap configuration.
  • 1110 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may transmit an UL signal in response to the DCI scheduling a PUSCH.
  • the UL signal may indicate applying the at least one measurement gap configuration.
  • 1112 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may activate the at least one measurement gap configuration based on the at least one time offset and a transmission time of the ACK.
  • 1114 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may receive second DCI or a second MAC-CE indicating at least one second measurement gap configuration.
  • 1116 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • the UE may apply the at least one second measurement gap configuration after at least one second time offset.
  • 1118 may be performed by component 198 of apparatus 1404 in FIG. 14.
  • FIG. 12 is a flowchart 1200 of a method of wireless communication.
  • the method may be performed by a network entity (e.g., the base station 102, the base station 310; the candidate PCell 404, the candidate PCell 406, the candidate PCell 408, the candidate PCell 410, the candidate cell 454, the candidate cell 456, the candidate cell 458, the candidate cell 460, the candidate CG 504, the candidate CG 506, the candidate CG 508, the candidate CG 510; the network entity 804, the network entity 904, the network entity 1402, the network entity 1502) .
  • the network entity may transmit DCI or a MAC-CE indicating at least one measurement gap configuration.
  • 1202 may be performed by the network entity 804 in FIG. 8, which may transmit DCI or a MAC-CE as the indication 810 of the at least one measurement gap configuration indicating at least one measurement gap configuration.
  • 1202 may be performed by the component 199 of network entity 1502 in FIG. 15.
  • the network entity may output an indication to transmit a measurement signal during a measurement gap based on at least one time offset of the at least one measurement gap configuration.
  • 1204 may be performed by the network entity 804 in FIG. 8, which may output an indication to transmit a measurement signal during a measurement gap based on at least one time offset of the at least one measurement gap configuration to a TRP of the network entity 804, which may transmit the one or more measurement gap signals 818.1204 may also be performed by the network entity 904 in FIG. 9, which may output an indication 916 to transmit a measurement signal during a measurement gap based on at least one time offset of the at least one measurement gap configuration to the network entity 906, which may transmit the one or more measurement gap signals 918.
  • 1204 may be performed by the component 199 of network entity 1502 in FIG. 15.
  • FIG. 13 is a flowchart 1300 of a method of wireless communication.
  • the method may be performed by a network entity (e.g., the base station 102, the base station 310; the candidate PCell 404, the candidate PCell 406, the candidate PCell 408, the candidate PCell 410, the candidate cell 454, the candidate cell 456, the candidate cell 458, the candidate cell 460, the candidate CG 504, the candidate CG 506, the candidate CG 508, the candidate CG 510; the network entity 804, the network entity 904, the network entity 1402, the network entity 1502) .
  • the network entity may transmit DCI or a MAC-CE indicating at least one measurement gap configuration.
  • 1302 may be performed by the network entity 804 in FIG. 8, which may transmit DCI or a MAC-CE as the indication 810 of the at least one measurement gap configuration indicating at least one measurement gap configuration.
  • 1302 may be performed by the component 199 of network entity 1502 in FIG. 15.
  • the network entity may output an indication to transmit a measurement signal during a measurement gap based on at least one time offset of the at least one measurement gap configuration.
  • 1304 may be performed by the network entity 804 in FIG. 8, which may output an indication to transmit a measurement signal during a measurement gap based on at least one time offset of the at least one measurement gap configuration to a TRP of the network entity 804, which may transmit the one or more measurement gap signals 818.1304 may also be performed by the network entity 904 in FIG. 9, which may output an indication 916 to transmit a measurement signal during a measurement gap based on at least one time offset of the at least one measurement gap configuration to the network entity 906, which may transmit the one or more measurement gap signals 918.
  • 1304 may be performed by the component 199 of network entity 1502 in FIG. 15.
  • the network entity may transmit an RRC configuration including a set of measurement gap configurations.
  • the DCI or the MAC-CE may indicate the at least one measurement gap configuration from the set of measurement gap configurations.
  • 1306 may be performed by component 199 of network entity 1502 in FIG. 15.
  • the network entity may receive an ACK/NACK in response to the DCI or the MAC-CE.
  • the ACK may include a second indication to apply the at least one measurement gap configuration.
  • 1308 may be performed by component 199 of network entity 1502 in FIG. 15.
  • the network entity may receive an ACK/NACK to a PDSCH scheduled by the DCI.
  • the indication may be outputted in response to receiving the ACK.
  • 1310 may be performed by component 199 of network entity 1502 in FIG. 15.
  • the network entity may receive an UL signal for a PUSCH scheduled by the DCI.
  • the indication may be outputted in response to receiving the UL signal.
  • 1312 may be performed by component 199 of network entity 1502 in FIG. 15.
  • the network entity may output the indication by transmitting the indication to a transceiver of the network entity or transmitting the indication to a second network entity.
  • 1314 may be performed by component 199 of network entity 1502 in FIG. 15.
  • the network entity may transmit DCI or a MAC-CE indicating at least one measurement gap configuration.
  • 1316 may be performed by component 199 of network entity 1502 in FIG. 15.
  • the network entity may output a second indication to transmit a second measurement signal during a second measurement gap based on the at least one second measurement gap configuration.
  • 1318 may be performed by component 199 of network entity 1502 in FIG. 15.
  • FIG. 14 is a diagram 1400 illustrating an example of a hardware implementation for an apparatus 1404.
  • the apparatus 1404 may be a UE, a component of a UE, or may implement UE functionality.
  • the apparatus1204 may include a cellular baseband processor 1424 (also referred to as a modem) coupled to one or more transceivers 1422 (e.g., cellular RF transceiver) .
  • the cellular baseband processor 1424 may include on-chip memory 1424'.
  • the apparatus 1404 may further include one or more subscriber identity modules (SIM) cards 1420 and an application processor 1406 coupled to a secure digital (SD) card 1408 and a screen 1410.
  • SIM subscriber identity modules
  • SD secure digital
  • the application processor 1406 may include on-chip memory 1406'.
  • the apparatus 1404 may further include a Bluetooth module 1412, a WLAN module 1414, an SPS module 1416 (e.g., GNSS module) , one or more sensor modules 1418 (e.g., barometric pressure sensor /altimeter; motion sensor such as inertial measurement unit (IMU) , gyroscope, and/or accelerometer (s) ; light detection and ranging (LIDAR) , radio assisted detection and ranging (RADAR) , sound navigation and ranging (SONAR) , magnetometer, audio and/or other technologies used for positioning) , additional memory modules 1426, a power supply 1430, and/or a camera 1432.
  • a Bluetooth module 1412 e.g., a WLAN module 1414
  • SPS module 1416 e.g., GNSS module
  • sensor modules 1418 e.g., barometric pressure sensor /altimeter
  • motion sensor such as inertial measurement unit (IMU) , gyroscope, and/or
  • the Bluetooth module 1412, the WLAN module 1414, and the SPS module 1416 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX) ) .
  • TRX on-chip transceiver
  • the Bluetooth module 1412, the WLAN module 1414, and the SPS module 1416 may include their own dedicated antennas and/or utilize the antennas 1480 for communication.
  • the cellular baseband processor 1424 communicates through the transceiver (s) 1422 via one or more antennas 1480 with the UE 104 and/or with an RU associated with a network entity 1402.
  • the cellular baseband processor 1424 and the application processor 1406 may each include a computer-readable medium /memory 1424', 1406', respectively.
  • the additional memory modules 1426 may also be considered a computer-readable medium /memory. Each computer-readable medium /memory 1424', 1406', 1426 may be non-transitory.
  • the cellular baseband processor 1424 and the application processor 1406 are each responsible for general processing, including the execution of software stored on the computer-readable medium /memory.
  • the software when executed by the cellular baseband processor 1424 /application processor 1406, causes the cellular baseband processor 1424 /application processor 1406 to perform the various functions described supra.
  • the computer-readable medium /memory may also be used for storing data that is manipulated by the cellular baseband processor 1424 /application processor 1406 when executing software.
  • the cellular baseband processor 1424 /application processor 1406 may be a component of the UE 350 and may include the memory 360 and/or at least one of the TX processor 368, the RX processor 356, and the controller/processor 359.
  • the apparatus 1404 may be a processor chip (modem and/or application) and include just the cellular baseband processor 1424 and/or the application processor 1406, and in another configuration, the apparatus 1404 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 1404.
  • the component 198 may be configured to receive DCI or a MAC-CE indicating at least one measurement gap configuration.
  • the component 198 may be configured to apply the at least one measurement gap configuration after at least one time offset.
  • the component 198 may be within the cellular baseband processor 1424, the application processor 1406, or both the cellular baseband processor 1424 and the application processor 1406.
  • the component 198 may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by one or more processors configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof.
  • the apparatus 1404 may include a variety of components configured for various functions.
  • the apparatus 1404 includes means for receiving DCI or a MAC-CE indicating at least one measurement gap configuration.
  • the apparatus 1404 may include means for applying the at least one measurement gap configuration after at least one time offset.
  • the apparatus 1404 may include means for receiving an RRC configuration including a set of measurement gap configurations.
  • the apparatus 1404 may include means for transmitting an ACK or a NACK in response to the DCI or the MAC-CE.
  • the apparatus 1404 may include means for activating the at least one measurement gap configuration based on the at least one time offset and a transmission time of the ACK.
  • the apparatus 1404 may include means for transmitting an ACK or a NACK in response to a PDSCH scheduled by the DCI.
  • the apparatus 1404 may include means for transmitting an UL signal in response to the DCI scheduling a PUSCH.
  • the apparatus 1404 may include means for applying the at least one measurement gap configuration by activating or deactivating at least one measurement gap.
  • the apparatus 1404 may include means for receiving second DCI or a second MAC-CE indicating at least one second measurement gap configuration.
  • the apparatus 1404 may include means for applying the at least one second measurement gap configuration after at least one second time offset.
  • the means may be the component 198 of the apparatus 1404 configured to perform the functions recited by the means.
  • the apparatus 1404 may include the TX processor 368, the RX processor 356, and the controller/processor 359.
  • the means may be the TX processor 368, the RX processor 356, and/or the controller/processor 359 configured to perform the functions recited by the means.
  • FIG. 15 is a diagram 1500 illustrating an example of a hardware implementation for a network entity 1502.
  • the network entity 1502 may be a BS, a component of a BS, or may implement BS functionality.
  • the network entity 1502 may include at least one of a CU 1510, a DU 1530, or an RU 1540.
  • the network entity 1502 may include the CU 1510; both the CU 1510 and the DU 1530; each of the CU 1510, the DU 1530, and the RU 1540; the DU 1530; both the DU 1530 and the RU 1540; or the RU 1540.
  • the CU 1510 may include a CU processor 1512.
  • the CU processor 1512 may include on-chip memory 1512'. In some aspects, the CU 1510 may further include additional memory modules 1514 and a communications interface 1518. The CU 1510 communicates with the DU 1530 through a midhaul link, such as an F1 interface.
  • the DU 1530 may include a DU processor 1532.
  • the DU processor 1532 may include on-chip memory 1532'.
  • the DU 1530 may further include additional memory modules 1534 and a communications interface 1538.
  • the DU 1530 communicates with the RU 1540 through a fronthaul link.
  • the RU 1540 may include an RU processor 1542.
  • the RU processor 1542 may include on-chip memory 1542'.
  • the RU 1540 may further include additional memory modules 1544, one or more transceivers 1546, antennas 1580, and a communications interface 1548.
  • the RU 1540 communicates with the UE 104.
  • the on-chip memory 1512', 1532', 1542' and the additional memory modules 1514, 1534, 1544 may each be considered a computer-readable medium /memory.
  • Each computer-readable medium /memory may be non-transitory.
  • Each of the processors 1512, 1532, 1542 is responsible for general processing, including the execution of software stored on the computer-readable medium /memory.
  • the software when executed by the corresponding processor (s) causes the processor (s) to perform the various functions described supra.
  • the computer-readable medium /memory may also be used for storing data that is manipulated by the processor (s) when executing software.
  • the component 199 is configured to transmit DCI or a MAC-CE indicating at least one measurement gap configuration.
  • the component 199 may be configured to output an indication to transmit a measurement signal during a measurement gap based on the at least one measurement gap configuration.
  • the component 199 may be within one or more processors of one or more of the CU 1510, DU 1530, and the RU 1540.
  • the component 199 may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by one or more processors configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof.
  • the network entity 1502 may include a variety of components configured for various functions.
  • the network entity 1502 includes means for transmitting DCI or a MAC-CE indicating at least one measurement gap configuration.
  • the network entity 1502 may include means for outputting an indication to transmit a measurement signal during a measurement gap based on the at least one measurement gap configuration.
  • the network entity 1502 may include means for outputting the indication by transmitting the indication to a transceiver of the network entity.
  • the network entity 1502 may include means for outputting the indication by transmitting the indication to a second network entity.
  • the network entity 1502 may include means for transmitting an RRC configuration including a set of measurement gap configurations.
  • the network entity 1502 may include means for receiving an ACK or a NACK in response to the DCI or the MAC-CE.
  • the network entity 1502 may include means for receiving an ACK or a NACK to a PDSCH scheduled by the DCI.
  • the network entity 1502 may include means for receiving an UL signal for a PUSCH scheduled by the DCI.
  • the network entity 1502 may include means for transmitting second DCI or a second MAC-CE indicating at least one second measurement gap configuration.
  • the network entity 1502 may include means for outputting a second indication to transmit a second measurement signal during a second measurement gap based on the at least one second measurement gap configuration.
  • the network entity 1502 may include means for outputting the indication by transmitting the indication to a transceiver of the network entity.
  • the network entity 1502 may include means for outputting the second indication by transmitting the second indication to a second network entity.
  • the network entity 1502 may include means for outputting the indication by transmitting the indication to a second network entity.
  • the network entity 1502 may include means for outputting the second indication by transmitting the second indication to a third network entity.
  • the means may be the component 199 of the network entity 1502 configured to perform the functions recited by the means.
  • the network entity 1502 may include the TX processor 316, the RX processor 370, and the controller/processor 375.
  • the means may be the TX processor 316, the RX processor 370, and/or the controller/processor 375 configured to perform the functions recited by the means.
  • Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and/or C, and may include multiples of A, multiples of B, or multiples of C.
  • combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C.
  • Sets should be interpreted as a set of elements where the elements number one or more. Accordingly, for a set of X, X would include one or more elements.
  • a first apparatus receives data from or transmits data to a second apparatus
  • the data may be received/transmitted directly between the first and second apparatuses, or indirectly between the first and second apparatuses through a set of apparatuses.
  • All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are encompassed by the claims. Moreover, nothing disclosed herein is dedicated to the public regardless of whether such disclosure is explicitly recited in the claims.
  • the words “module, ” “mechanism, ” “element, ” “device, ” and the like may not be a substitute for the word “means. ” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for. ”
  • the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like.
  • the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently.
  • a device configured to “output” data such as a transmission, signal, or message, may transmit the data, for example with a transceiver, or may send the data to a device that transmits the data.
  • a device configured to “obtain” data such as a transmission, signal, or message, may receive, for example with a transceiver, or may obtain the data from a device that receives the data.
  • Aspect 1 is a method of wireless communication at a UE, where the method may include receiving DCI or a MAC-CE indicating at least one measurement gap configuration. The method may include applying the at least one measurement gap configuration after at least one time offset.
  • Aspect 2 is the method of aspect 1, where the method may include receiving an RRC configuration including a set of measurement gap configurations.
  • the DCI or the MAC-CE may indicate the at least one measurement gap configuration from the set of measurement gap configurations.
  • Aspect 3 is the method of aspect 2, where the MAC-CE may indicate the at least one measurement gap configuration by down-selecting a subset of the set of measurement gap configurations.
  • the DCI may indicate the at least one measurement gap configuration from the subset of the set of measurement gap configurations.
  • Aspect 4 is the method of any of aspects 1 to 3, where the DCI may be dedicated for the UE.
  • Aspect 5 is the method of any of aspects 1 to 4, where the DCI may include a DL DCI including a DCI field that indicates an ID of the at least one measurement gap configuration.
  • Aspect 6 is the method of any of aspects 1 to 5, where the method may include transmitting an ACK or a NACK in response to the DCI or the MAC-CE.
  • the ACK may include an indication to apply the at least one measurement gap configuration.
  • Aspect 7 is the method of aspect 6, where the DCI or the MAC-CE may include a first indication that indicates an ID of the at least one measurement gap configuration.
  • the ACK may include a second indication indicating the ID of the at least one measurement gap configuration.
  • Aspect 8 is the method of any of aspects 6 to 7, where the method may include activating the at least one measurement gap configuration based on the at least one time offset and a transmission time of the ACK.
  • Aspect 9 is the method of any of aspects 1 to 8, where the method may include transmitting an ACK or a NACK in response to a PDSCH scheduled by the DCI.
  • the ACK may indicate applying the at least one measurement gap configuration.
  • Aspect 10 is the method of any of aspects 1 to 9, where the method may include transmitting an UL signal in response to the DCI scheduling a PUSCH.
  • the UL signal may indicate applying the at least one measurement gap configuration.
  • Aspect 11 is the method of any of aspects 1 to 10, where the MAC-CE may include the at least one time offset.
  • Aspect 12 is the method of any of aspects 1 to 11, where applying the at least one measurement gap configuration may include activating or deactivating at least one measurement gap.
  • Aspect 13 is the method of any of aspects 1 to 12, where the method may include receiving second DCI or a second MAC-CE indicating at least one second measurement gap configuration. The method may include applying the at least one second measurement gap configuration after at least one second time offset.
  • Aspect 14 is the method of aspect 13, where the at least one time offset may be different from the at least one second time offset.
  • Aspect 15 is the method of any of aspects 13 to 14, where the at least one measurement gap configuration may be associated with a first cell.
  • the at least one second measurement gap configuration may be associated with a second cell.
  • Aspect 16 is the method of any of aspects 1 to 15, where the at least one measurement gap configuration may include a periodic measurement gap configuration or an aperiodic measurement gap configuration.
  • Aspect 17 is a method of wireless communication at a network entity, where the method may include transmitting DCI or a MAC-CE indicating at least one measurement gap configuration. The method may include outputting an indication to transmit a measurement signal during a measurement gap based on the at least one measurement gap configuration.
  • Aspect 18 is the method of aspect 17, where outputting the indication may include at least one of: transmitting the indication to a transceiver of the network entity or transmitting the indication to a second network entity.
  • Aspect 19 is the method of any of aspects 17 and 18, where the method may include transmitting an RRC configuration including a set of measurement gap configurations.
  • the DCI or the MAC-CE may indicate the at least one measurement gap configuration from the set of measurement gap configurations.
  • Aspect 20 is the method of any of aspects 17 to 19, where the DCI may be dedicated for a UE.
  • Aspect 21 is the method of any of aspects 17 to 20, where the DCI may include a DL DCI including a DCI field that indicates an ID of the at least one measurement gap configuration.
  • Aspect 22 is the method of any of aspects 17 to 21, where the method may include receiving an ACK or a NACK in response to the DCI or the MAC-CE.
  • the ACK may include a second indication to apply the at least one measurement gap configuration.
  • Aspect 23 is the method of aspect 22, where the DCI or the MAC-CE may include a first indication that indicates an ID of the at least one measurement gap configuration.
  • the ACK may include a third indication indicating the ID of the at least one measurement gap configuration.
  • Aspect 24 is the method of any of aspects 17 to 23, where the method may include receiving an ACK or a NACK to a PDSCH scheduled by the DCI. The indication may be outputted in response to receiving the ACK.
  • Aspect 25 is the method of any of aspects 17 to 24, where the method may include receiving an UL signal for a PUSCH scheduled by the DCI. The indication may be outputted in response to receiving the UL signal.
  • Aspect 26 is the method of any of aspects 17 to 25, where the MAC-CE includes at least one time offset for the at least one measurement gap configuration.
  • Aspect 27 is the method of any of aspects 17 to 26, where the at least one measurement gap configuration may indicate an activation or a deactivation of at least one measurement gap.
  • Aspect 28 is the method of any of aspects 17 to 27, where the method may include transmitting second DCI or a second MAC-CE indicating at least one second measurement gap configuration. The method may include outputting a second indication to transmit a second measurement signal during a second measurement gap based on the at least one second measurement gap configuration.
  • Aspect 29 is the method of any of aspects 17 to 28, where outputting the indication may include transmitting the indication to a transceiver of the network entity. Outputting the second indication may include transmitting the second indication to a second network entity.
  • Aspect 30 is the method of any of aspects 17 to 29, where outputting the indication may include transmitting the indication to a second network entity. Outputting the second indication may include transmitting the second indication to a third network entity.
  • Aspect 31 is the method of any of aspects 17 to 30, where the at least one measurement gap configuration may include a periodic measurement gap configuration or an aperiodic measurement gap configuration.
  • Aspect 32 is an apparatus for wireless communication, including: a memory; and at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to implement any of aspects 1 to 31.
  • Aspect 33 is the apparatus of aspect 32, further including at least one of an antenna or a transceiver coupled to the at least one processor.
  • Aspect 34 is an apparatus for wireless communication including means for implementing any of aspects 1 to 31.
  • Aspect 35 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code, where the code when executed by a processor causes the processor to implement any of aspects 1 to 31.
  • a computer-readable medium e.g., a non-transitory computer-readable medium

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

Abstract

L'invention concerne un procédé selon lequel une entité de réseau peut être configurée pour transmettre une information de commande de liaison descendante (DCI) de réception ou un élément de commande (MAC-CE) de commande d'accès au support (MAC-CE) indiquant au moins une configuration d'intervalle de mesure. Un équipement utilisateur (UE) peut être configuré pour recevoir l'information DCI ou l'élément MAC-CE indiquant ladit au moins une configuration d'intervalle de mesure. L'entité de réseau peut être configurée pour émettre une indication pour transmettre un signal de mesure pendant un intervalle de mesure sur la base d'au moins un décalage temporel de ladite au moins une configuration d'intervalle de mesure. L'indication peut être émise vers une seconde entité de réseau ou vers un émetteur-récepteur de l'entité de réseau. L'équipement utilisateur peut être configuré pour appliquer ladite au moins une configuration d'intervalle de mesure après ledit au moins un décalage temporel.
PCT/CN2022/106234 2022-07-18 2022-07-18 Configuration d'intervalle de mesure de décalage temporel WO2024016105A1 (fr)

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CN108353410A (zh) * 2015-11-05 2018-07-31 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN110419241A (zh) * 2017-03-14 2019-11-05 英特尔Ip公司 用于按频率群组和按小区配置测量间隙的系统、方法和装置
WO2022006185A2 (fr) * 2020-06-30 2022-01-06 Qualcomm Incorporated Configuration dynamique d'intervalles de mesure
US20220022067A1 (en) * 2020-07-14 2022-01-20 Samsung Electronics Co., Ltd. Method and apparatus for controlling activation of cell group in wireless communication system

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CN108353410A (zh) * 2015-11-05 2018-07-31 株式会社Ntt都科摩 用户终端、无线基站以及无线通信方法
CN110419241A (zh) * 2017-03-14 2019-11-05 英特尔Ip公司 用于按频率群组和按小区配置测量间隙的系统、方法和装置
WO2022006185A2 (fr) * 2020-06-30 2022-01-06 Qualcomm Incorporated Configuration dynamique d'intervalles de mesure
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