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WO2024237629A1 - Mesures de gestion de ressources radio indépendantes de l'état de commande de ressources radio - Google Patents

Mesures de gestion de ressources radio indépendantes de l'état de commande de ressources radio Download PDF

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Publication number
WO2024237629A1
WO2024237629A1 PCT/KR2024/006447 KR2024006447W WO2024237629A1 WO 2024237629 A1 WO2024237629 A1 WO 2024237629A1 KR 2024006447 W KR2024006447 W KR 2024006447W WO 2024237629 A1 WO2024237629 A1 WO 2024237629A1
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rrc
state
measurement
result
rrm
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Chadi KHIRALLAH
Tomasz Mach
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Definitions

  • Certain examples of the present disclosure provide approaches for radio resource control-state-independent radio resource management measurements.
  • certain examples of the present disclosure provide methods, apparatus and systems for radio resource control-state-independent radio resource management measurements in 3rd Generation Partnership Project (3GPP) networks such as LTE, 4th Generation (4G), 5th Generation (5G) and 6th Generation (6G) networks.
  • 3GPP 3rd Generation Partnership Project
  • 5G mobile communication technologies define broad frequency bands such that high transmission rates and new services are possible, and can be implemented not only in “Sub 6GHz” bands such as 3.5GHz, but also in “Above 6GHz” bands referred to as mmWave including 28GHz and 39GHz.
  • 6G mobile communication technologies referred to as Beyond 5G systems
  • terahertz bands for example, 95GHz to 3THz bands
  • IIoT Industrial Internet of Things
  • IAB Integrated Access and Backhaul
  • DAPS Dual Active Protocol Stack
  • 5G baseline architecture for example, service based architecture or service based interface
  • NFV Network Functions Virtualization
  • SDN Software-Defined Networking
  • MEC Mobile Edge Computing
  • multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and AI (Artificial Intelligence) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.
  • FD-MIMO Full Dimensional MIMO
  • OAM Organic Angular Momentum
  • RIS Reconfigurable Intelligent Surface
  • an aspect of the present invention provides a method and apparatus for radio resource control (RRC) state-independent radio resource manamgement (RRM) measurmenets.
  • RRC radio resource control
  • RRM radio resource manamgement
  • a method performed by user equipment (UE) in a wireless communication system comprising: performing a radio resource management (RRM) measurement for neighboring cells in a radio resource control (RRC) connected state; storing a result for the RRM measurement by emulating an RRC idle state or an RRC inactive state measurement; and transmitting, to a base station, a report of the result for the RRM measurement.
  • RRM radio resource management
  • RRC radio resource control
  • a method performed by base station in a wireless communication system comprising: transmitting, to a user equipment (UE), system information including cell reselection configuration information, and receiving, from the UE, a report of a result for a radio resource management (RRM) measurement for neighboring cells, wherein the RRM measurement for the neighboring cells is performed in a radio resource control (RRC) connected state, and wherein the result for the RRM measurement emulates an RRC idle sate or an RRC inactive state measurement.
  • UE user equipment
  • RRM radio resource management
  • a user equipment (UE) in a wireless communication system comprises: a transceiver; and a controller configured to: perform a radio resource management (RRM) measurement for neighboring cells in a radio resource control (RRC) connected state, store a result for the RRM measurement by emulating an RRC idle state or an RRC inactive state measurement, and transmit, to a base station, a report of the result for the RRM measurement.
  • RRM radio resource management
  • RRC radio resource control
  • a base station in a wireless communication system comprises: a transceiver; and a controller configured to: transmit, to a user equipment (UE), system information including cell reselection configuration information, and receive, from the UE, a report of a result for a radio resource management (RRM) measurement for neighboring cells, wherein the RRM measurement for the neighboring cells is performed in a radio resource control (RRC) connected state, and wherein the result for the RRM measurement emulates an RRC idle sate or an RRC inactive state measurement.
  • UE user equipment
  • RRM radio resource management
  • Figure 1 provides an example 3GPP NR RRC UE measurements configuration for cell handover in RRC_CONNECTED;
  • Figure 2 provides an example 3GPP NR RRC UE measurements configuration for cell reselection in RRC_IDLE and RRC_INACTIVE;
  • Figure 3 provides an example 3GPP NR RRC UE state machine extended with emulated RRM measurements in accordance with the present disclosure
  • Figure 4 provides an example 3GPP NR RRC UE emulated measurements configuration for cell reselection in RRC_CONNECTED in accordance with the present disclosure
  • Figure 5 provides a block diagram of an exemplary UE or network entity/function that may be used in certain examples of the present disclosure.
  • Wireless or mobile (cellular) communications networks in which a mobile terminal (e.g., user equipment (UE), such as a mobile handset) communicates via a radio link with a network of base stations, or other wireless access points or nodes, have undergone rapid development through a number of generations.
  • a mobile terminal e.g., user equipment (UE), such as a mobile handset
  • 3GPP 3rd Generation Partnership Project
  • 4G and 5G systems are now widely deployed, and development of Sixth Generation (6G) Systems is in progress.
  • 3GPP standards for 4G systems include an Evolved Packet Core (EPC) and an Enhanced-UTRAN (E-UTRAN: an Enhanced Universal Terrestrial Radio Access Network).
  • EPC Evolved Packet Core
  • E-UTRAN Enhanced-UTRAN
  • LTE Long Term Evolution
  • LTE is commonly used to refer to the whole system including both the EPC and the E-UTRAN, and LTE is used in this sense in the remainder of this document.
  • LTE should also be taken to include LTE enhancements such as LTE Advanced and LTE Pro, which offer enhanced data rates compared to LTE.
  • 5G New Radio 5G New Radio
  • 5G NR 5G New Radio
  • NR is designed to support the wide variety of services and use case scenarios envisaged for 5G networks, though builds upon established LTE technologies.
  • New frameworks and architectures are also being developed as part of 5G networks in order to increase the range of functionality and use cases available through 5G networks.
  • Radio Resource Measurements or the results thereof may be used for the Radio Resource Control.
  • the current (legacy) RRM measurements configuration requirements defined by 3GPP RAN WGs are statically linked to the currently used RRC protocol state in the UE (5G NR UE states and transitions are described in TR 38.912). As a result, their configuration must be updated (restarted) every time the RRC protocol state is changed (please note the UE state machine is reflected on the RAN side as they need to be in sync). This may be suboptimal as the state transition requires time and introduces latency e.g.
  • RRC state change may take up to tens of ms in 5G NR (e.g. 10 ms target requirement for transition from idle to connected RRC state in 3GPP TR 38.913 v17.0.0) depending on the transition type, RAN signalling load, etc.
  • this transition causes discontinuity in the RRM measurements - old measurements control configuration and actual cell measurements are deleted and stopped until the new configuration is received in the UE from RAN (using RRC signalling messages) and the serving and neighbour cells measurements could be restarted.
  • Discontinuity is typically the longest during the transition between the RRC_IDLE and RRC_CONNECTED states as it is the most complex from the radio protocol stack point of view. There are various reasons why such measurements discontinuity is undesired from the mobile network performance point of view e.g.:
  • the discontinuity may negatively impact the performance of such optimisation approaches e.g. AI/ML based optimisation model training may be disrupted by the lack of continuous training data such as UE cell measurements.
  • Continuous MDT collection is beneficial only for AI/ML training in OAM.
  • Continuous MDT collection is to enable the continuous collection of MDT data from the same UE across RRC state changes (RRC_Connected, RRC_Idle, RRC_Inactive).
  • the present disclosure introduces a solution for the RRM measurements discontinuity and indirectly helps with the issue of MDT measurements discontinuity, during the RRC state transitions, by defining the corresponding control plane architecture to support such RAN optimisations.
  • the present disclosure also proposes a solution to address the discontinuity of RRM measurements obtained during different RRC states, and also enable continuous MDT framework, to support RAN optimizations.
  • the present disclosure removes the static mapping between the current UE RRC state and its measurements control and configuration, eliminating the need for the L1/PHY measurements reconfiguration between the RRC connected and idle/inactive states transition.
  • This gives the system more flexibility in terms of configuring and providing suitable UE cell measurements to the network (e.g. using MDT reporting) e.g. for the optimization purposes especially based on automated AI/ML, SON mechanisms etc.
  • Further benefits beyond MDT and AI/ML features may also arise, for example improved UE mobility procedures between cells e.g. quicker cell reselection when leaving the RRC_CONNECTED state etc.
  • a method of a user equipment (UE) in a wireless communications network comprising: performing, whilst in a radio resource control connected (RRC_CONNECTED) state with the network, a plurality of RRC_CONNECTED measurements; storing a result of the RRC_CONNECTED measurements; and reporting the results of the RRC_CONNECTED measurements to the network as minimisation of drive tests (MDT) data.
  • RRC_CONNECTED radio resource control connected
  • the method further comprises receiving measurement configuration information from the network and performing the RRC_CONNECTED measurements based on the configuration information and/or reporting the results of the RRC_CONNECTED measurements based on the configuration information.
  • the reporting is performed whilst the UE is in an RRC_CONNECTED state.
  • the plurality of RRC_CONNECTED measurements are performed across a time period, and the results of the plurality of RRC_CONNECTED measurements are reported after the period of time.
  • the results of the RRC_CONNECTED measurements are not reported immediately following the measurement.
  • the reporting is performed during a transition of the UE from an RRC_CONNECTED state to an RRC_IDLE state or an RRC_INACTIVE state.
  • an adapted version of the results of the RRC_CONNECTED measurements are reported to the network during a transition of the UE from an RRC_CONNECTED state to an RRC_IDLE state or an RRC_INACTIVE state.
  • the results of the RRC_CONNECTED measurements are adapted to emulate a result of measurements performed in the RRC_IDLE or an RRC_INACTIVE state.
  • the results of the RRC_CONNECTED measurements are adapted to emulate a predetermined measurement periodicity.
  • the RRC_CONNECTED measurements are performed at a first periodicity corresponding to the RRC_CONNECTED state, and the results of the RRC_CONNECTED measurements are adapted to emulate a second measurement periodicity corresponding to an RRC_IDLE state or an RRC_INACTIVE state.
  • the adaptation includes filtering of the results of the RRC_CONNECTED measurements.
  • the adaptation is based on configuration information received from the network.
  • the results of the RRC_CONNECTED measurements are utilised for AI/ML model training.
  • the RRC_CONNECTED measurements are radio resource measurements (RRM) (e.g. UE cell measurements).
  • RRM radio resource measurements
  • the reporting is performed based on an MDT framework/procedure.
  • the RRC_CONNECTED measurements are MDT measurements.
  • the reporting is performed based on an RRC reporting procedure.
  • the network is a 3GPP wireless communications network.
  • a user equipment for operation in a wireless communications network, the UE comprising a controller, a receiver, and a transmitter, wherein the controller in combination with the transmitter and the receiver are configured to perform any above-specified method.
  • Embodiments herein may be described and illustrated in terms of blocks which carry out a described function or functions. These blocks, which may be referred to herein as managers, units, modules, hardware components or the like, are physically implemented by analog and/or digital circuits such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits and the like, and may optionally be driven by a firmware.
  • the circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like.
  • circuits constituting a block may be implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware to perform some functions of the block and a processor to perform other functions of the block.
  • a processor e.g., one or more programmed microprocessors and associated circuitry
  • Each block of the embodiments may be physically separated into two or more interacting and discrete blocks without departing from the scope of the disclosure.
  • the blocks of the embodiments may be physically combined into more complex blocks without departing from the scope of the disclosure.
  • X for Y (where Y is some action, process, operation, function, activity or step and X is some means for carrying out that action, process, operation, function, activity or step) encompasses means X adapted, configured or arranged specifically, but not necessarily exclusively, to do Y.
  • 3GPP 4G e.g., LTE
  • 5G e.g., NR
  • the techniques disclosed herein are not limited to these examples or to 3GPP 4G (e.g., LTE) and/or 5G (e.g., NR), and may be applied in any suitable system or standard, for example one or more existing and/or future generation wireless communication systems or standards (e.g., B5G, 5G-Advanced, 6G etc.).
  • 3GPP 4G e.g., LTE
  • 5G e.g., NR
  • 5G Advanced and/or 6G 3GPP Release 17, 18, 19, 20, etc.
  • 3GPP Release 17, 18, 19, 20, etc. 3GPP Release 17, 18, 19, 20, etc.
  • the functionality of the various network entities and other features disclosed herein may be applied to corresponding or equivalent entities or features in other communication systems or standards.
  • Corresponding or equivalent entities or features may be regarded as entities or features that perform the same or similar role, function, operation or purpose within the network.
  • model and model functionality may be used interchangeably.
  • a particular network entity may be implemented as a network element on dedicated hardware, as a software instance running on a dedicated hardware, and/or as a virtualised function instantiated on an appropriate platform, e.g. on a cloud infrastructure.
  • One or more of the messages in the examples disclosed herein may be replaced with one or more alternative messages, signals or other type of information carriers that communicate equivalent or corresponding information.
  • One or more non-essential elements, entities and/or messages may be omitted in certain examples.
  • ⁇ Information carried by a particular message in one example may be carried by two or more separate messages in an alternative example.
  • ⁇ Information carried by two or more separate messages in one example may be carried by a single message in an alternative example.
  • the transmission of information between network entities is not limited to the specific form, type and/or order of messages described in relation to the examples disclosed herein.
  • an apparatus/device/network entity configured to perform one or more defined network functions and/or a method therefor.
  • Such an apparatus/device/network entity may comprise one or more elements, for example one or more of receivers, transmitters, transceivers, processors, controllers, modules, units, and the like, each element configured to perform one or more corresponding processes, operations and/or method steps for implementing the techniques described herein.
  • an operation/function of X may be performed by a module configured to perform X (or an X-module).
  • Certain examples of the present disclosure may be provided in the form of a system (e.g., a network) comprising one or more such apparatuses/devices/network entities, and/or a method therefor.
  • the present disclosure discloses a novel approach to control RRM measurements used by the RRC protocol defined for 5G New Radio (NR) in 3GPP TS 38.331 (for RRC connected state) and TS 38.304 (for RRC idle and inactive state) in 3GPP compliant Radio Access Networks (e.g. in NG-RAN defined in 3GPP TS 38.300 but also in 3G UMTS 3GPP TS 25.300 and 4G LTE 3GPP TS 36.300).
  • These measurements configured by RRC protocol include e.g. serving cell and neighbouring cells received power (e.g. RSRP) and quality (e.g. RSRQ) which are used to support two User Equipment (UE) mobility procedures defined in 3GPP mobile systems:
  • RRM measurements are also used by other RAN mechanisms e.g. such as 'Radio measurement collection for Minimization of Drive Tests (MDT)' defined in 3GPP TS 37.320 [5].
  • MDT Minimization of Drive Tests
  • the main difference in RRM cells measurements in the connected and idle/inactive RRC states is their periodicity i.e. significantly decreased in idle and inactive to reduce the UE energy consumption by allowing the UE protocol stack to enter 'deep sleep' state between the cells measurements.
  • Detailed RRM measurements performance requirements e.g. their configuration and periodicity for 5G NR are defined in 3GPP TS 38.133.
  • the disclosure approach(es) leverages similarities between a RRM measurements defined and used in Radio Resource Control (RRC) protocol connected state (aka mode) and in the idle and inactive states.
  • RRC Radio Resource Control
  • the present disclosure introduces emulated RRM cell measurements in the NR RRC_IDLE, RRC_INACTIVE and RRC_CONNECTED states to enable RRC-state-independent RRM measurements (not possible in the state of the art approaches) - see Fig 3. It leverages common characteristics of both RRC connected and idle/inactive states in terms of the main cell measurements control and configuration mechanisms required for the UE mobility as defined in [2] and summarized in Table 1.
  • system information can be acquired in RRC_IDLE / RRC_INACTIVE and RRC_CONNECTED states based on receiving broadcasted system information for the serving cell. Because of the availability of such system information (including cell measurements control information) and the UE ability to perform similar neighbouring cell measurements to support mobility when the UEs are at the RRC_CONNECTED state, the emulated UE RRM measurements for cell reselection (idle or active state behaviour) in the RRC_CONNECTED state can be performed - see Fig 4. As a result, these emulated UE RRM measurements are available immediately for use (e.g.
  • the SON/AI entity can be mapped to a network component that is based on a 3GPP based network architecture, where the SON/AI entity can be the SON component defined in RAN WG3 or OAM. It can also be based on a network architecture such as O-RAN, in which case the SON/AI entity may be considered as the near-RT RIC or Real-time RIC in an O-RAN architecture, and NW here are the E2 nodes in an O-RAN system.
  • RRC_IDLE / RRC_INACTIVE state RRC_CONNECTED state UE controlled mobility based on common broadcasted network configuration (from acquired System Information Blocks (SIB)) - cell reselection Network controlled mobility based on dedicated UE signalling (from RRC messages) - cell handover UE acquires common system information which may include as defined in [3]: - Measurement control information: periodicity (based on DRX cycle), cells, frequencies, RATs to be measured and their absolute priorities - L1/PHY Averaging filter configuration UE receives dedicated RRC signalling information which may include as defined in [2].
  • SIB System Information Blocks
  • RRC_CONNECTED state UE controlled mobility based on common broadcasted network configuration (from acquired System Information Blocks (SIB)) - cell reselection Network controlled mobility based on dedicated UE signalling (from RRC messages) - cell handover UE acquires common system information which may include as defined in [3]: - Measurement control information: periodic
  • - Measurement control information periodicity, cells, frequencies, RATs to be measured, measurement gaps configuration etc UE performs serving and neighbouring cells measurements for UE triggered cell reselection UE performs serving and neighbouring cells measurements and measurements reporting (for network triggered HO)
  • Figures 1 and 2 illustrate RRM cell measurements configuration for the RRC connected and idle/inactive states respectively.
  • Figure 1 illustrates 3GPP NR RRC UE measurements configuration for cell handover in RRC_CONNECTED based on [2]
  • Figure 2 illustrates 3GPP NR RRC UE measurements configuration for cell reselection in RRC_IDLE and RRC_INACTIVE based on [3].
  • the RRM measurements for the proposed emulated cell reselection could be performed in the UE 'virtually', in parallel to the RRM measurements for legacy HO, using the cell reselection configuration acquired from the system information and based on neighbouring cell measurements (see Fig.4).
  • the frequency of connected state measurements may need to be adopted (e.g. filtered) to become suitable for the idle/inactive state requirements (e.g. corresponding to the current Discontinuous Reception (DRX) Cycle). That is, using this approach, the UE in RRC connected state is able to emulate its measurements collection behaviour in the idle/inactive state measurements in parallel to the ongoing normal connected state measurement activity.
  • DRX Discontinuous Reception
  • the idea is to re-use the same (or similar) RRM measurements of serving and neighbour cells, performed by the UE in the RRC connected state, for example, for the purpose of handover based mobility, with some sort of modification (adaptation or adjustment) in order to emulate the UE's measurements collection configuration and behaviour in the RRC idle and/or inactive state. For example, this may require using measurements before L1/PHY averaging filter is applied (if configured by the network a defined in [3]) and reducing their frequency. In another example, adapting (or adjusting) the measurement minimum period from 200ms, for intra-frequency measurements in the connected state [4] or less, to 1280ms in the typical system configuration.
  • the network may adjust the RRM measurements configuration in the connected state to help with making the emulated idle/inactive measurements more suitable for the current network optimisation requirements e.g. configure measurement gaps, additional measurements such as location reporting [2], etc.
  • the network configures the UE to re-use RRM measurements obtained for serving and neighbouring cells, during RRC connected state, as RRM measurements during RRC idle state.
  • the network may adapt the measurements configurations taking into consideration the AI/ML model life-cycle-management (LCM) procedures.
  • LCM life-cycle-management
  • RRM measurements for model monitoring, training, and/or inference.
  • the network may adapt the measurement configurations taking into consideration the AI/ML model use case, functionality, scenario, and/or other assistance information obtained from the UE (or group of UEs). For example, information related to UE type, location, mobility (e.g. speed, trajectory), energy, altitude, information from other sensors etc.
  • assistance information obtained from the UE (or group of UEs). For example, information related to UE type, location, mobility (e.g. speed, trajectory), energy, altitude, information from other sensors etc.
  • the network may decide the measurements configurations (or data collection configurations) in different RRC states, for AI/ML models deployed at the network and/or UE. That is, network-side models, UE-side models, and/or two-sided (i.e. UE-part and network-part) models.
  • the network may decide the measurement configurations (or data collection configurations) in different RRC states, for network-side and/or network-part of two-sided models, while the UE may decide the data collection configurations for the UE-side and the UE-part of two-sided models.
  • the UE may inform the network of the measurement configurations for different RRC states.
  • the UE may inform the network, either separately or as part of the measurements configurations indication, of the related AI/ML LCM purpose, and/or use case.
  • the UE For complementarity of the solution, there is also an opportunity for the UE to emulate the connected state measurements in non-connected RRC states (idle and inactive) (see Fig. 3). This may happen after the state transition to reduce the measurements discontinuity or independently e.g. the UE may continue or resume the RRM measurements based on the last known configuration received from dedicated RRC measurements control information.
  • a possible disadvantage of this approach is that performing cell measurements in idle/inactive states may increase the energy consumption (as connected state measurements periodicity is typically higher than idle/inactive measurements as highlighted earlier) due to extra RF receiver activity reducing their opportunity to go to 'deep sleep' mode between measurements but may be tolerable for the UEs which have suitable power supply (large battery, vehicle UEs etc.)
  • the UE may need to inform the NW about its capability to perform the emulated measurements using existing RRC capability reporting procedures as defined in [2] (e.g. due to HW or SW resources constrains some UEs may have such preference) by introducing relevant capability flag. Then the network needs to inform the capable UE about the need to start or stop the emulated RRM measurements. Typically this could happen during the RRC state transition (although it could also happen independently from the state transition e.g. when the UE is continuously in the RRC_CONNECTED state) using the extended RRC protocol signalling messages triggering the UE state change or RRM/radio protocol stack reconfiguration such as RRCReconfiguration, RRCRelease, RRCResume etc a described in [2].
  • This information could be controlled by a new information element in the RRC message such as the measurements start/stop flag or similar e.g. ENUMERATED type (start, pause, stop,...others).
  • a new information element in the RRC message such as the measurements start/stop flag or similar e.g. ENUMERATED type (start, pause, stop,...others).
  • An alternative solution is to include this new information element into the existing MDT signalling, defining a new RRC message etc.
  • Reporting of emulated UE measurements could be based on extending existing RRC measurement reporting procedures, MDT reporting procedures etc as defined in [2] and [5].
  • the source NG-RAN node indicates to the target NG-RAN node that the UE (or a group of UEs) involved in a handover procedure from the source NG-RAN node to the target NG-RAN, can support the capability of emulating RRM measurements in the RRC_CONNECTED state (or RRC_IDLE/INACTIVE states as defined in section "Emulated connected state measurements in RRC_IDLE or RRC_INACTIVE" above).
  • the source NG-RAN node indicates to the target NG-RAN node that the UE (or a group of UEs) are configured to emulate the RRM measurements in the RRC_CONNECTED state (or RRC_IDLE/INACTIVE states as defined in section "Emulated connected state measurements in RRC_IDLE or RRC_INACTIVE" above).
  • the source NG-RAN node may include this indication in a new information element (IE), for instance EmulatedRRMMeasurements IE (or any other suitable naming, included in the HANDOVER REQUEST message (or any other newly defined suitable message).
  • IE new information element
  • EmulatedRRMMeasurements IE or any other suitable naming, included in the HANDOVER REQUEST message (or any other newly defined suitable message).
  • EmulatedRRMMeasurements IE may be set to "support" and included in the HANDOVER REQUEST message (or any other newly defined suitable message).
  • EmulatedRRMMeasurements IE may be defined as ENUMERATED (start, pause, stop, ... others).
  • the target NG-RAN node Upon reception of the EmulatedRRMMeasurements IE, contained in the HANDOVER REQUEST message, the target NG-RAN node shall, for example,
  • EmulatedRRMMeasurements IE is included in the HANDOVER REQUEST message
  • the target NG-RAN node shall if supported, activate the emulated RRM measurements collection, or start or stop the emulated RRM measurements session.
  • the target NG-RAN node shall if supported, store the emulated RRM measurements, and take it into account when performing an AI/ML LCM procedure.
  • the measurements maybe provided as collected data for use in at least one (other) network entity (or function) in the network.
  • the source and/or the target NG-RAN node may perform some modification (or filtering or other processing or manipulation) of the emulated RRM measurements data before using this data and/or forwarding this data to another network entity for use in an AI/ML LCM procedure.
  • the AMF indicates to the NG-RAN node that the UE (or a group of UEs) can support the capability of emulating RRM measurements in the RRC_CONNECTED state (or RRC_IDLE/INACTIVE states as defined in section "Emulated connected state measurements in RRC_IDLE or RRC_INACTIVE" above).
  • the AMF includes information on the UE's capability to support emulating RRM measurements, in any suitable exiting (or newly defined) NG signalling, messages, and/or IEs.
  • the INITIAL CONTEXT SETUP REQUEST message may contain the EmulatedRRMMeasurements IE, if available in the AMF.
  • the NG-RAN node Upon receipt of the INITIAL CONTEXT SETUP REQUEST message the NG-RAN node shall
  • Figure 3 illustrates the UE state machine based on [2] extended with the proposed emulated RRM cell measurements, where the additions/extensions are indicated with a + (i.e. the text following the +).
  • Figure 4 illustrates the proposed emulated RRM cell measurements in RRC connected state, where the new aspects are within the dashed outline 400.
  • examples of the present disclosure may be realized in the form of hardware, software or a combination of hardware and software.
  • Certain examples of the present disclosure may provide a computer program comprising instructions or code which, when executed, implement a method, system and/or apparatus in accordance with any aspect, example and/or embodiment disclosed herein.
  • Certain embodiments of the present disclosure provide a machine-readable storage storing such a program.
  • FIG. 5 is a block diagram of an exemplary network entity/function that may be used in examples of the present disclosure, such as the techniques disclosed in relation to any of the preceding figures.
  • any of the network entities, network function etc. may be provided in the form of the network entity illustrated in Figure 5.
  • the skilled person will appreciate that a network entity/function may be implemented, for example, as a network element on a dedicated hardware, as a software instance running on a dedicated hardware, and/or as a virtualised function instantiated on an appropriate platform, e.g. on a cloud infrastructure.
  • the entity 500 comprises a processor (or controller) 501, a transmitter 503 and a receiver 505.
  • the receiver 505 is configured for receiving one or more messages from one or more other network entities, for example as described above.
  • the transmitter 503 is configured for transmitting one or more messages to one or more other network entities, for example as described above.
  • the processor 501 is configured for performing one or more operations, for example according to the operations as described above.
  • Such an apparatus and/or system may be configured to perform a method according to any aspect, embodiment or example disclosed herein.
  • Such an apparatus may comprise one or more elements, for example one or more of receivers, transmitters, transceivers, processors, controllers, modules, units, and the like, each element configured to perform one or more corresponding processes, operations and/or method steps for implementing the techniques described herein.
  • an operation/function of X may be performed by a module configured to perform X (or an X-module).
  • the one or more elements may be implemented in the form of hardware, software, or any combination of hardware and software.
  • examples of the present disclosure may be implemented in the form of hardware, software or any combination of hardware and software. Any such software may be stored in the form of volatile or non-volatile storage, for example a storage device like a ROM, whether erasable or rewritable or not, or in the form of memory such as, for example, RAM, memory chips, device or integrated circuits or on an optically or magnetically readable medium such as, for example, a CD, DVD, magnetic disk or magnetic tape or the like.
  • volatile or non-volatile storage for example a storage device like a ROM, whether erasable or rewritable or not
  • memory such as, for example, RAM, memory chips, device or integrated circuits or on an optically or magnetically readable medium such as, for example, a CD, DVD, magnetic disk or magnetic tape or the like.
  • the storage devices and storage media are embodiments of machine-readable storage that are suitable for storing a program or programs comprising instructions that, when executed, implement certain examples of the present disclosure. Accordingly, certain examples provide a program comprising code for implementing a method, apparatus or system according to any example, embodiment and/or aspect disclosed herein, and/or a machine-readable storage storing such a program. Still further, such programs may be conveyed electronically via any medium, for example a communication signal carried over a wired or wireless connection.

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

Abstract

La divulgation concerne un système de communication 5G ou 6G destiné à prendre en charge un débit supérieur de transmission de données. L'invention concerne un procédé d'un équipement utilisateur (UE) dans un réseau de communication sans fil, le procédé consistant à : effectuer, tout en étant dans un état connecté de commande de ressources radio (RRC_CONNECTED) avec le réseau, une pluralité de mesures RRC_CONNECTED ; stocker un résultat des mesures RRC_CONNECTED ; et rapporter les résultats des mesures RRC_CONNECTED au réseau en tant que données de minimisation des tests mobiles (MDT).
PCT/KR2024/006447 2023-05-12 2024-05-13 Mesures de gestion de ressources radio indépendantes de l'état de commande de ressources radio Pending WO2024237629A1 (fr)

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GBGB2307136.8A GB202307136D0 (en) 2023-05-12 2023-05-12 Radio resource control-state-independent radio resource management measurements
GB2307136.8 2023-05-12
GB2404134.5A GB2632726A (en) 2023-05-12 2024-03-22 Radio resource control-state-independent radio resource management measurements
GB2404134.5 2024-03-22

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US20190037425A1 (en) * 2017-07-26 2019-01-31 Kt Corporation Methods of controlling measurement process in rrc idle mode and apparatuses thereof
WO2022012589A1 (fr) * 2020-07-14 2022-01-20 FG Innovation Company Limited Équipement utilisateur et procédé de mesurage en mode veille
WO2022084955A1 (fr) * 2020-10-22 2022-04-28 Telefonaktiebolaget Lm Ericsson (Publ) Mesures de cellule voisine à mobilité centrée sur les couches l1/l2
US20220330075A1 (en) * 2019-12-31 2022-10-13 Huawei Technologies Co., Ltd. Radio resource management measurement method and apparatus

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CN102149106B (zh) * 2010-02-10 2014-01-29 电信科学技术研究院 一种mdt测量实现方法及其设备
CN103119868A (zh) * 2010-09-21 2013-05-22 京瓷株式会社 无线测量收集方法和无线终端
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US20150341816A1 (en) * 2013-01-10 2015-11-26 Lg Electronics Inc. Method for managing radio resource in multi-cell wireless communication system and device therefor
US20190037425A1 (en) * 2017-07-26 2019-01-31 Kt Corporation Methods of controlling measurement process in rrc idle mode and apparatuses thereof
US20220330075A1 (en) * 2019-12-31 2022-10-13 Huawei Technologies Co., Ltd. Radio resource management measurement method and apparatus
WO2022012589A1 (fr) * 2020-07-14 2022-01-20 FG Innovation Company Limited Équipement utilisateur et procédé de mesurage en mode veille
WO2022084955A1 (fr) * 2020-10-22 2022-04-28 Telefonaktiebolaget Lm Ericsson (Publ) Mesures de cellule voisine à mobilité centrée sur les couches l1/l2

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