WO2024099645A1 - Procédés et appareil pour déterminer des résultats de mesure sur la base de signaux de référence supplémentaires provenant d'une ou de plusieurs cellules cibles - Google Patents

Procédés et appareil pour déterminer des résultats de mesure sur la base de signaux de référence supplémentaires provenant d'une ou de plusieurs cellules cibles Download PDF

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Publication number
WO2024099645A1
WO2024099645A1 PCT/EP2023/077587 EP2023077587W WO2024099645A1 WO 2024099645 A1 WO2024099645 A1 WO 2024099645A1 EP 2023077587 W EP2023077587 W EP 2023077587W WO 2024099645 A1 WO2024099645 A1 WO 2024099645A1
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WIPO (PCT)
Prior art keywords
additional
reference signals
target cells
additional reference
measurement results
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PCT/EP2023/077587
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English (en)
Inventor
Ali Karimidehkordi
Lars Dalsgaard
Tero Henttonen
Jani-Pekka KAINULAINEN
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Nokia Technologies Oy
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Publication of WO2024099645A1 publication Critical patent/WO2024099645A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • An example embodiment relates generally to techniques for wireless communication and, more particularly, to techniques for taking action, including, for example, providing for fast resource reservation (FRR), in response to measurement results that are based on additional reference signals provided by one or more target cells.
  • FRR fast resource reservation
  • a user equipment may establish a radio resource control (RRC) connection with a radio access network (RAN) by initiating a random access (RA) procedure and sending a RRC connection establishment or resume request to a primary cell and/or one or more secondary cells.
  • RRC radio resource control
  • RAN radio access network
  • RA random access
  • Some information may be provided in the RRC connection for the purpose of allowing the RAN to apply various policies, such as accepting the RRC connection establishment request, rejecting the RRC connection establishment request, or releasing the RRC connection establishment request.
  • the RRC connection establishment request may be triggered by a service request in a fifth generation (5G) system.
  • 5G fifth generation
  • a UE may take advantage of DC/CA (Dual Connectivity, Carrier Aggregation), which allows a UE to obtain measurements from multiple cells, such as a primary cell and a secondary cell, as well as to transmit and receive data from multiple cells.
  • DC/CA Dual Connectivity, Carrier Aggregation
  • the UE prefers to establish DC/CA in a reasonable time before ending data transmission in order to benefit therefrom.
  • the UE may use idle/inactive mode measurements on one or more target cells while a timer, e.g., a T331 timer, runs.
  • Measurements done for cell reselection purposes or “Early” measurements done in the idle/inactive mode for reporting when moving to the CONNECTED mode (which is hereafter call early measurement reporting (EMR) are examples of idle/inactive mode measurements performed by the UE.
  • EMR early measurement reporting
  • the UE may provide a report of performed measurements for the one or more target cells. The report may be provided to the network to network to facilitate establishing an additional or secondary link or connection with a target cell.
  • One band that benefits from the idle/inactive mode measurements and the subsequent reports is the FR2 band that supports the transmission of millimeter wave frequencies, e.g., 24.25 GHz to 52.6 GHz, such as for relatively short range, high data rate applications.
  • millimeter wave frequencies e.g., 24.25 GHz to 52.6 GHz
  • UEs that support transmission in the FR1 band e.g., 4.1 GHz to 7.125 GHz
  • UEs that support transmission in the FR2 band may have multiple directional antenna panels located, for example, on different side of UE with each panel configured to cover part of the space.
  • the increased number of antenna panels for the FR2 band are provided to compensate for additional propagation path loss of millimeter wave frequencies.
  • the signals from one or more secondary cells are beamformed and transmitted as different spatially filtered narrow beams.
  • a UE configured to operate in the FR2 band may switch between different cells more frequently in order to receive the signals and to detect and measure the target cells and, as a result, may rely upon the idle/inactive mode measurements and the subsequent reports to facilitate such a switch in a timely manner and reduce the amount of unnecessary measurements to save power.
  • the initial connection (cell detection/ measurement) establishment procedure (including cell detection and measurement) and beam selection phase are performed by measuring synchronization signal blocks (SSBs) broadcast from a primary cell, e.g., a gNB, through different spatial filters that are usually multiplexed and swept in a time division multiplexed (TDM) manner.
  • SSBs synchronization signal blocks
  • TDM time division multiplexed
  • the time required for cell detection and cell measurement may consume a substantial proportion of the idle/inactive mode.
  • the time required for cell detection and measurement such as in conjunction with obtaining and analyzing the idle/inactive mode measurements, may increase the energy consumption of the UE, increase latency in conjunction with establishing DC/CA with a target cell and/or reduce data throughput with the target cell.
  • Various embodiments generally relate to techniques for facilitating a DC/CA connection with a target cell, such as by reducing the amount of time for a user equipment to establish a DC/CA connection with a target cell.
  • a method in an example embodiment, includes initiation a measurement process while a user equipment (UE) served by a primary cell is in an inactive or idle state. The method also includes receiving one or more additional reference signals (RS) from one or more target cells and determining measurement results based on at least the one or more additional RS from the one or more target cells. The method further includes taking action based upon the measurement results.
  • RS reference signals
  • the method of an example embodiment determines measurement results by determining additional idle/inactive mode measurements based on the one or more additional RS from the one or more target cells.
  • the idle/inactive mode measurements include an early measurement reporting measurement.
  • determining measurement results incudes performing a validation based on a relationship between the measurement results obtained in reliance upon the one or more additional RS from the one or more target cells and measurement results obtained prior to receiving the one or more additional RS.
  • the method of an example embodiment determines measurement results by obtaining enhanced measurements based on the one or more additional RS from the one or more target cells.
  • initiating the measurement process includes receiving paging from the primary cell.
  • the method of this example embodiment also includes receiving an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the method initiates the measurement process by causing transmission of a request for additional reference signals as well as additional information to the primary cell.
  • the method of an example embodiment takes action by reporting the measurement results or information derived from the measurement results to the primary cell and/or by applying a radio resource control (RRC) configuration, applying an RRC reconfiguration or requesting a connection to a different cell.
  • RRC radio resource control
  • an apparatus in another example embodiment, includes at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to initiate a measurement process while a user equipment (UE) served by a primary cell is in an inactive or idle state.
  • the apparatus is also caused to receive one or more additional reference signals (RS) from one or more target cells and to determine measurement results based on at least the one or more additional RS from the one or more target cells.
  • the apparatus is further caused to take action based upon the measurement results.
  • RS reference signals
  • the apparatus of an example embodiment is caused to determine measurement results by determining additional idle/inactive mode measurements based on the one or more additional RS from the one or more target cells.
  • the idle/inactive mode measurements include an early measurement reporting measurement.
  • the apparatus is caused to determine measurement results by performing a validation based on a relationship between the measurement results obtained in reliance upon the one or more additional RS from the one or more target cells and measurement results obtained prior to receiving the one or more additional RS.
  • the apparatus of an example embodiment is caused to determine measurement results by obtaining enhanced measurements based on the one or more additional RS from the one or more target cells.
  • the apparatus of an example embodiment is caused to initiate the measurement process by receiving paging from the primary cell.
  • the instructions when executed by the at least one processor, are further configured to cause the apparatus to receive an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the apparatus is caused to initiate the measurement process by causing transmission of a request for additional reference signals as well as additional information to the primary cell.
  • the apparatus of an example embodiment is caused to take action by reporting the measurement results or information derived from the measurement results to the primary cell and/or by applying a radio resource control (RRC) configuration, applying an RRC reconfiguration or requesting a connection to a different cell.
  • RRC radio resource control
  • a non-transitory computer-readable storage medium includes program instructions stored thereon for initiating a measurement process while a user equipment (UE) served by a primary cell is in an inactive or idle state.
  • the program instructions are also for receiving one or more additional reference signals (RS) from one or more target cells and for determining measurement results based on at least the one or more additional RS from the one or more target cells.
  • the program instructions are further for taking action based upon the measurement results.
  • the program instructions for determining measurement results in accordance with an example embodiment include program instructions for determining additional idle/inactive mode measurements based on the one or more additional RS from the one or more target cells.
  • the idle/inactive mode measurements include an early measurement reporting measurement.
  • the program instructions for determining measurement results include program instructions for performing a validation based on a relationship between the measurement results obtained in reliance upon the one or more additional RS from the one or more target cells and measurement results obtained prior to receiving the one or more additional RS.
  • the program instructions for determining measurement results in accordance with an example embodiment include program instructions for obtaining enhanced measurements based on the one or more additional RS from the one or more target cells.
  • the program instructions for initiating the measurement process in accordance with an example embodiment include program instructions for receiving paging from the primary cell.
  • the program instructions are also for receiving an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the program instructions for initiating the measurement process include program instructions for causing transmission of a request for additional reference signals as well as additional information to the primary cell.
  • the program instructions for taking action in accordance with an example embodiment include program instructions for reporting the measurement results or information derived from the measurement results to the primary cell and/or program instructions for applying a radio resource control (RRC) configuration, applying an RRC reconfiguration or requesting a connection to a different cell.
  • RRC radio resource control
  • an apparatus in yet another example embodiment, includes mean, while a user equipment (UE) served by a primary cell is in an inactive or idle state, for initiating a measurement process.
  • the apparatus also includes means for receiving one or more additional reference signals (RS) from one or more target cells and means for determining measurement results based on at least the one or more additional RS from the one or more target cells.
  • the apparatus further includes means for taking action based upon the measurement results.
  • RS reference signals
  • the means for determining measurement results in accordance with an example embodiment include means for determining additional idle/inactive mode measurements based on the one or more additional RS from the one or more target cells.
  • the idle/inactive mode measurements comprise an early measurement reporting measurement.
  • the means for determining measurement results include means for performing a validation based on a relationship between the measurement results obtained in reliance upon the one or more additional RS from the one or more target cells and measurement results obtained prior to receiving the one or more additional RS.
  • the means for determining measurement results in accordance with an example embodiment include means for obtaining enhanced measurements based on the one or more additional RS from the one or more target cells.
  • the means for initiating the measurement process in accordance with an example embodiment includes means for receiving paging from the primary cell.
  • the apparatus also includes means for receiving an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the means for initiating the measurement process in accordance with an example embodiment includes means for causing transmission of a request for additional reference signals as well as additional information to the primary cell.
  • the means for taking action include means for reporting the measurement results or information derived from the measurement results to the primary cell and/or means for applying a radio resource control (RRC) configuration, applying an RRC reconfiguration or requesting a connection to a different cell.
  • RRC radio resource control
  • a method in an example embodiment, includes configuring a user equipment (UE) to obtain measurements from one or more target cells. The method also includes initiating a measurement process and causing communication with the one or more target cells to cause the one or more target cells to provide one or more additional reference signals from which measurement results are derivable. The method further includes, following provision of the one or more additional reference signals by the one or more target cells, terminating further provision of additional reference signals from the one or more target cells. [0021] The method of an example embodiment also includes obtaining configuration information for the one or more additional reference signals to be provided by the one or more target cells, prior to initiating the measurement process and causing communication of the configuration information for the one or more additional reference signals to the UE.
  • UE user equipment
  • configuring the UE includes causing transmission of one or more validation conditions to the UE to facilitate validation of one or more idle/inactive mode measurements based on the one or more validation conditions.
  • Configuring the UE in accordance with one example embodiment includes causing transmission of one or more enhancement measurement configurations to the UE.
  • the method of an example embodiment initiates the measurement process by paging the UE.
  • the method may also include providing an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • initiating the measurement process includes receiving a request for additional reference signals along with additional information from the UE.
  • Causing communication with the one or more target cells in accordance with one example embodiment includes causing transmission of one or more activation signals to the one or more target cells.
  • terminating further provision of additional reference signals includes receiving an indication from the UE that the measurement process is to be concluded and causing communication with the one or more target cells to terminate the provision of the one or more additional reference signals.
  • an apparatus in another example embodiment, includes at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to configure a user equipment (UE) to obtain measurements from one or more target cells.
  • the instructions are also configured to initiate a measurement process and causing communication with the one or more target cells to cause the one or more target cells to provide one or more additional reference signals from which measurement results are derivable.
  • the instructions are further configured, following provision of the one or more additional reference signals by the one or more target cells, to terminate further provision of additional reference signals from the one or more target cells.
  • the instructions of an example embodiment are further configured to obtain configuration information for the one or more additional reference signals to be provided by the one or more target cells, prior to initiating the measurement process and to cause communication of the configuration information for the one or more additional reference signals to the UE.
  • the instructions for configuring the UE include instructions for causing transmission of one or more validation conditions to the UE to facilitate validation of one or more idle/inactive mode measurements based on the one or more validation conditions.
  • the instructions for configuring the UE in accordance with an example embodiment include instructions for causing transmission of one or more enhancement measurement configurations to the UE.
  • the instructions for initiating the measurement process include instructions for paging the UE.
  • the apparatus of an example embodiment also includes instructions for providing an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the instructions for initiating the measurement process include instructions for receiving a request for additional reference signals along with additional information from the UE.
  • the instructions for causing communication with the one or more target cells in accordance with an example embodiment include instructions for causing transmission of one or more activation signals to the one or more target cells.
  • the instructions for terminating further provision of additional reference signals include instructions for receiving an indication from the UE that the measurement process is to be concluded and instructions for causing communication with the one or more target cells to terminate the provision of the one or more additional reference signals.
  • a non-transitory computer-readable storage medium includes program instructions stored thereon for configuring a user equipment (UE) to obtain measurements from one or more target cells.
  • the program instructions are also configured to initiate a measurement process and causing communication with the one or more target cells to cause the one or more target cells to provide one or more additional reference signals from which measurement results are derivable.
  • the program instructions are further configured, following provision of the one or more additional reference signals by the one or more target cells, to terminate further provision of additional reference signals from the one or more target cells.
  • the non-transitory computer-readable storage medium of an example embodiment also includes program instructions for obtaining configuration information for the one or more additional reference signals to be provided by the one or more target cells, prior to initiating the measurement process and program instructions for causing communication of the configuration information for the one or more additional reference signals to the UE.
  • the program instructions for configuring the UE include program instructions for causing transmission of one or more validation conditions to the UE to facilitate validation of one or more idle/inactive mode measurements based on the one or more validation conditions.
  • the program instructions for configuring the UE in accordance with an example embodiment include program instructions for causing transmission of one or more enhancement measurement configurations to the UE.
  • the program instructions for initiating the measurement process in accordance with an example embodiment include program instructions for paging the UE.
  • the non-transitory computer-readable storage medium may also include program instructions for providing an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the program instructions for initiating the measurement process include program instructions for receiving a request for additional reference signals along with additional information from the UE.
  • the program instructions for causing communication with the one or more target cells in accordance with an example embodiment include program instructions for causing transmission of one or more activation signals to the one or more target cells.
  • the program instructions for terminating further provision of additional reference signals include program instructions for receiving an indication from the UE that the measurement process is to be concluded and program instructions for causing communication with the one or more target cells to terminate the provision of the one or more additional reference signals.
  • an apparatus in yet another example embodiment, includes means for configuring a user equipment (UE) to obtain measurements from one or more target cells.
  • the apparatus also includes means for initiating a measurement process and causing communication with the one or more target cells to cause the one or more target cells to provide one or more additional reference signals from which measurement results are derivable.
  • the apparatus further includes means, following provision of the one or more additional reference signals by the one or more target cells, for terminating further provision of additional reference signals from the one or more target cells.
  • the apparatus of an example embodiment also includes means for obtaining configuration information for the one or more additional reference signals to be provided by the one or more target cells, prior to initiating the measurement process and means for causing communication of the configuration information for the one or more additional reference signals to the UE.
  • the means for configuring the UE include means for causing transmission of one or more validation conditions to the UE to facilitate validation of one or more idle/inactive mode measurements based on the one or more validation conditions.
  • the means for configuring the UE in accordance with an example embodiment includes means for causing transmission of one or more enhancement measurement configurations to the UE.
  • the means for initiating the measurement process in accordance with an example embodiment includes means for paging the UE.
  • the apparatus also includes means for providing an indication of transmission of the one or more additional RS along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the means for initiating the measurement process include means for receiving a request for additional reference signals along with additional information from the UE.
  • the means for causing communication with the one or more target cells in accordance with an example embodiment include means for causing transmission of one or more activation signals to the one or more target cells.
  • the means for terminating further provision of additional reference signals include means for receiving an indication from the UE that the measurement process is to be concluded and means for causing communication with the one or more target cells to terminate the provision of the one or more additional reference signals.
  • a method in an example embodiment, includes causing provision of reference signals to a user equipment (UE) and receiving one or more activation signals from a primary cell serving the UE. In response to the one or more activation signals, the method also includes causing provision of one or more additional reference signals (RS) to the UE. The one or more additional reference signals (RS) are provided in addition to the reference signals. In response to an indication from the UE that a measurement process is to be concluded, the method further includes terminating the provision of one or more additional reference signals. [0033] The method of an example embodiment also includes, prior to causing provision of the reference signals to the UE, receiving a request for configuration information for the one or more additional reference signals. The method of this example embodiment further includes causing provision of configuration information to the primary cell for the one or more additional reference signals.
  • an apparatus in another example embodiment, includes at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to cause provision of reference signals to a user equipment (UE).
  • the instructions are also configured to receive one or more activation signals from a primary cell serving the UE and, in response to the one or more activation signals, to cause provision of one or more additional reference signals (RS) to the UE.
  • the one or more additional reference signals (RS) are provided in addition to the reference signals.
  • the instructions are further configured to terminate, in response to an indication from the UE that a measurement process is to be concluded, the provision of one or more additional reference signals.
  • the instructions of an example embodiment are further configured to receive, prior to causing provision of the reference signals to the UE, a request for configuration information for the one or more additional reference signals.
  • the instructions of this example embodiment are also configured to cause provision of configuration information to the primary cell for the one or more additional reference signals.
  • a non-transitory computer-readable storage medium includes program instructions stored thereon for causing provision of reference signals to a user equipment (UE) and for receiving one or more activation signals from a primary cell serving the UE.
  • the program instructions are further configured to cause provision of one or more additional reference signals (RS) to the UE.
  • the one or more additional reference signals (RS) are provided in addition to the reference signals.
  • program instructions are additionally configured to terminate the provision of one or more additional reference signals.
  • the program instructions of an example embodiment are further configured to receive, prior to causing provision of the reference signals to the UE, a request for configuration information for the one or more additional reference signals.
  • the program instructions are also configured to cause provision of configuration information to the primary cell for the one or more additional reference signals.
  • an apparatus in yet another example embodiment, includes means for causing provision of reference signals to a user equipment (UE) and means for receiving one or more activation signals from a primary cell serving the UE.
  • the apparatus also includes means, in response to the one or more activation signals, to cause provision of one or more additional reference signals (RS) to the UE.
  • the one or more additional reference signals (RS) are provided in addition to the reference signals.
  • the apparatus further includes means, in response to an indication from the UE that a measurement process is to be concluded, for terminating the provision of one or more additional reference signals.
  • the apparatus of an example embodiment also includes means, prior to causing provision of the reference signals to the UE, for receiving a request for configuration information for the one or more additional reference signals.
  • the apparatus of this example embodiment also includes means for causing provision of configuration information to the primary cell for the one or more additional reference signals.
  • Figure 1 illustrate an example of a communication system in accordance with an example embodiment of the present disclosure
  • Figure 2 illustrates a block diagram of an apparatus that may be configured in accordance with an example embodiment of the present disclosure
  • Figure 3 illustrates a block diagram of a time line of the state of an user equipment in accordance with an example embodiment of the present disclosure
  • Figure 4A illustrate a signal diagram of the operations in a downlink configuration in accordance with an example embodiment of the present disclosure
  • Figure 4B illustrate a signal diagram of the operations in a downlink configuration in accordance with an example embodiment of the present disclosure
  • Figure 4C illustrate a signal diagram of the operations in an uplink configuration in accordance with an example embodiment of the present disclosure
  • Figure 4D illustrate a signal diagram of the operations in an uplink configuration in accordance with an example embodiment of the present disclosure
  • Figure 5 illustrates an example workflow implemented by a UE in accordance with an example embodiment of the present disclosure
  • Figure 6 illustrates an example workflow implemented by a primary cell in accordance with an example embodiment of the present disclosure
  • Figure 7 illustrates an example workflow implemented by a target cell in accordance with an example embodiment of the present disclosure.
  • circuitry refers to (a) hardware-only circuit implementations (e.g., implementations in analog circuitry and/or digital circuitry); (b) combinations of circuits and computer program product(s) comprising software and/or firmware instructions stored on one or more computer readable memories that work together to cause an apparatus to perform one or more functions described herein; and (c) circuits, such as, for example, a microprocessor(s) or a portion of a microprocessor(s), that require software or firmware for operation even if the software or firmware is not physically present.
  • This definition of ‘circuitry’ applies to all uses of this term herein, including in any claims.
  • circuitry also includes an implementation comprising one or more processors and/or portion(s) thereof and accompanying software and/or firmware.
  • circuitry as used herein also includes, for example, a baseband integrated circuit or applications processor integrated circuit for a mobile phone or a similar integrated circuit in a server, a cellular network device, other network device (such as a core network apparatus), field programmable gate array, and/or other computing device.
  • example As used herein, the terms “example,” “exemplary,” and the like are used to mean “serving as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Rather, use of the terms “example,” “exemplary,” and the like are intended to present concepts in a concrete fashion.
  • component or feature may,” “can,” “could,” “should,” “would,” “preferably,” “possibly,” “typically,” “optionally,” “for example,” “often,” or “might” (or other such language) be included or have a characteristic, that particular component or feature is not required to be included or to have the characteristic. Such component or feature may be optionally included in some embodiments, or it may be excluded.
  • computer-readable medium refers to non-transitory storage hardware, non-transitory storage device or non-transitory computer system memory that may be accessed by a controller, a microcontroller, a computational system or a module of a computational system to encode thereon computer-executable instructions or software programs.
  • a non-transitory “computer-readable medium” may be accessed by a computational system or a module of a computational system to retrieve and/or execute the computerexecutable instructions or software programs encoded on the medium.
  • non- transitory computer-readable media may include, but are not limited to, one or more types of hardware memory, non-transitory tangible media (for example, one or more magnetic storage disks, one or more optical disks, one or more USB flash drives), computer system memory or random-access memory (such as, DRAM, SRAM, EDO RAM), and the like.
  • a communication system 100 is provided in accordance with various embodiments of the present disclosure.
  • the communication system 100 may comprise at least one user equipment (UE) 110, at least one primary cell 120 that is currently serving the UE, and one or more target cells 130A, 130B (collectively ‘ 130’).
  • UE user equipment
  • target cells 130A, 130B collectively ‘ 130’
  • the primary cell is described to operate in the FR1 band and the UE and the target cell(s) are described to operate in the FR2 band with the target cell(s) that operate in the FR2 band being considered secondary cell(s).
  • one or more network nodes may control the primary cell, the target cell(s) and/or the UE, all of which may operate in other frequency bands.
  • the primary cell may be configured to also operate in the FR2 band or the target cell(s) may be configured to operate in the FR1 band.
  • the apparatus, method and computer program product of an example embodiment are configured to implement a measurement process as described herein that is based upon measurements by the UE 110 of one or more additional reference signals (RS) from the one or more target cells 130 in order increase the efficiency of a DC/CA setup/resume process in order to establish or resume an additional connection with a target cell in a timely or efficient manner.
  • RS additional reference signals
  • the system 100 may be deployed within a radio access architecture based on long term evolution advanced (LTE Advanced, LTE-A) and/or new radio (NR, 5G).
  • LTE Advanced Long term evolution advanced
  • NR new radio
  • the system may be deployed in other network architectures including within other communication networks including, for example, other communication networks developed in the future, e.g., sixth generation (6G) networks, as well as any of a number of existing networks including a universal mobile telecommunications system (UMTS) radio access network (UTRAN or E-UTRAN), wireless local area network (WLAN or WiFi), worldwide interoperability for microwave access (WiMAX), Bluetooth®, personal communications services (PCS), ZigBee®, wideband code division multiple access (WCDMA), systems using ultra-wideband (UWB) technology, sensor networks, mobile ad-hoc networks (MANETs) and Internet Protocol multimedia subsystems (IMS) or any combination thereof.
  • UMTS universal mobile telecommunications system
  • UTRAN or E-UTRAN wireless local
  • the UE 110 may be any type of user terminal, terminal device, etc. to which resources on the air interface are allocated and assigned.
  • the UE may be a portable computing device such as a wireless mobile communication device including, but not limited to, the following types of devices: a mobile station (mobile phone), smartphone, personal digital assistant (PDA), handset, device using a wireless modem (alarm or measurement device, etc.), laptop and/or touch screen computer, tablet, game console, notebook, and multimedia device.
  • the user equipment may also be called a subscriber unit, mobile station, remote terminal, access terminal, user terminal or user equipment (UE) just to mention but a few names or apparatuses.
  • the cells such as the primary cell 120 and the one or more target cells 130, is a network element and may be embodied by any of a variety of access points.
  • the cells may be embodied by a base station, a Node B, e.g., a gNB, or the like.
  • the apparatus 200 may be an embodiment of a UE 110 and/or may be embodied by or otherwise associated with a UE 110, in some instances.
  • the apparatus 200 may be an embodiment of a network element or may be embodied by or otherwise associated with a network element and, as such may embody the access point of any one of the cells, e.g., the primary cell 120 or a target cell 130.
  • the apparatus 200 may include processor 202, memory 204, and network interface 206.
  • the apparatus 200 may be configured to execute the operations described herein. Although these components are described with respect to the performance of various functions, it should be understood that the particular implementations necessarily include the use of particular hardware. It should also be understood that certain of these components may include similar or common hardware. For example, two sets of circuitries may both leverage use of the same processor, network interface, storage medium, or the like to perform their associated functions, such that duplicate hardware is not required for each set of circuitries.
  • the processor 202 may be in communication with the memory 204 via a bus for passing information among components of the apparatus.
  • the memory 204 is non-transitory and may include, for example, one or more volatile and/or nonvolatile memories.
  • the memory 204 may be an electronic storage device (e.g., a computer-readable storage medium).
  • the memory 204 may be configured to store information, data, content, applications, instructions, or the like for enabling the apparatus to carry out various functions in accordance with an example embodiment disclosed herein.
  • the processor 202 may be embodied in a number of different ways and may, for example, include one or more processing devices configured to perform independently.
  • the processor 202 may include one or more processors configured in tandem via a bus to enable independent execution of instructions, pipelining, and/or multithreading.
  • the use of the term “processor” may be understood to include a single core processor, a multi-core processor, multiple processors internal to the apparatus, and/or remote or “cloud” processors.
  • the processor 202 may be configured to execute instructions stored in the memory 204 and/or circuitry otherwise accessible to the processor 202.
  • the processor 202 may be configured to execute hard-coded functionalities.
  • the processor 202 may represent an entity (e.g., physically embodied in circuitry) capable of performing operations according to an embodiment disclosed herein while configured accordingly.
  • the instructions may specifically configure the processor 202 to perform the algorithms and/or operations described herein when the instructions are executed.
  • the apparatus 200 may optionally include input/output circuitry that may, in turn, be in communication with processor 202 to provide output to a user and/or other entity and, in some embodiments, to receive an indication of an input.
  • the input/output circuitry may comprise a user interface and may include a display, and may comprise a web user interface, a mobile application, a query -initiating computing device, a kiosk, or the like.
  • the input/output circuitry may also include a keyboard, a mouse, a joystick, a touch screen, touch areas, soft keys, a microphone, a speaker, or other input/output mechanisms.
  • the processor and/or user interface circuitry comprising the processor may be configured to control one or more functions of one or more user interface elements through computer program instructions (e.g., software and/or firmware) stored on a memory accessible to the processor (e.g., memory 204, and/or the like).
  • computer program instructions e.g., software and/or firmware
  • a memory accessible to the processor e.g., memory 204, and/or the like.
  • the network interface 206 may be any means such as a device or circuitry embodied in either hardware or a combination of hardware and software that is configured to receive and/or transmit data from/to a network and/or any other device, circuitry, or module in communication with the apparatus 200.
  • the network interface 206 may include, for example, a network interface for enabling communications with a wired or wireless communication network, such as the primary cell 120 and one or more secondary cells 130.
  • the network interface 206 may include one or more network interface cards, antennae, buses, switches, routers, modems, and supporting hardware and/or software, or any other device suitable for enabling communications via a network.
  • the network interface 206 may include the circuitry for interacting with the antenna/antennae to cause transmission of signals via the antenna/antennae or to handle receipt of signals received via the antenna/ antennae .
  • the UE 110 and the cells may communicate in accordance with the timing diagram of Figure 3 in order to obtain measurement results in a manner that reduces the measurement acquisition and validation delay and, as a result, reduces the time required for DC/CA setup/resume (hereinafter generally referenced as DC/CA setup).
  • a UE 110 may be in an RRC connected mode.
  • idle/inactive mode measurements may be obtained for a UE 110 that supports and relies upon the idle/inactive mode measurements to facilitate DC/CA setup.
  • the idle/inactive mode measurements may be any of a variety of idle/inactive mode measurements.
  • an EMR UE For a UE (termed an EMR UE) that supports early measurement reporting (EMR), the idle/inactive mode measurements may be EMR measurements.
  • EMR UE is a UE that supports one or more RRC IDLE/RRC INACTIVE measurement capabilities including idlelnactiveNR- MeasReport-r 16, idlelnactiveNR-MeasBeamRport-r 16, idlelnactiveEUTRA-MeasReport-r 16 and/or idleInactive-ValidityArea-rl6 measurements, is considered capable of performing early measurement reporting (EMR) and, as such, is an EMR UE for which the idle/inactive mode measurements may be EMR measurements.
  • EMR early measurement reporting
  • a UE (termed a non-EMR UE) need not support and rely upon EMR measurements, and for a UE that does support and rely upon EMR measurements, the UE may make the idle/inactive mode measurements based on reference signals transmitted by the one or more target cells 130 during at least a portion of the idle/inactive period.
  • a timer e.g., T331
  • T331 may begin to run, at least for EMR UEs, at the transition from the RRC connected mode to the idle/inactive mode or from the time that the UE begins to make idle/ inactive mode measurements.
  • the timer indicates the length of time that the UE 110 obtains idle/inactive measurements based on reference signals transmitted by the target cell(s) 130.
  • the behavior of the UE with respect to obtaining further measurements has previously been undefined.
  • the UE enters an RRC setup phase followed by a return to the RRC connected mode.
  • the method, apparatus and computer program product of an example embodiment obtain measurement results, either in addition to the EMR measurements for a UE that supports EMR or separate and apart from EMR for a non-EMR UE, to facilitate fast resource reservation in relation to setting up or resuming a DC/CA connection with a target cell, thereby permitting the UE and the target cell to commence communications more quickly and efficiently.
  • Figures 4A-4D illustrate two example implementations of a signal flow in accordance with an example embodiment in which a user equipment is configured to communicate with a primary cell and/or one or more target cells to increase the speed at which a UE can establish a DC/CA connection.
  • the UE of Figures 4A-4D is configured to support EMR reporting.
  • the idle/inactive mode measurements need not be EMR measurements in other example embodiments.
  • Figures 4A-4B illustrate a downlink configuration
  • Figures 4C-4D illustrate an uplink configuration.
  • the establishment of a DC/CA connection may be improved in various manners, such as by continuing idle/inactive mode measurements, e.g., EMR measurements, such as following expiration of the timer, by obtaining idle/inactive mode measurements from which the idle/inactive mode measurements may be validated and/or by obtaining additional and/or different types of idle/inactive mode measurements relative to the prior idle/inactive mode measurements.
  • the validation of the one or more idle/inactive measurements may relieve the UE from preforming new measurements during the state transition (e.g., from inactive/idle state to connected state).
  • the UE may partially or fully validate one or more idle/inactive mode measurements, such as based upon a relationship between the idle/inactive mode measurements obtained prior to expiration of the timer and the idle/inactive mode measurements obtained after expiration of the timer.
  • the relationship may be based on a comparison of the idle/inactive mode measurements obtained prior to expiration of the timer with idle/inactive mode measurements obtained after expiration of the timer and confirming that the measurements are the same or differ by no more than an acceptable amount or percentage.
  • the relationship may also consist of obtaining a measurement result using previous reception assumptions for the idle/inactive mode measurements and checking that the obtain measurement result is still larger than or equal to a threshold value, or that the UE can still detect the synchronization signals, e.g., the primary synchronization signals (PSS) and/or the secondary synchronization signals (SSS), of the previously measured cell, or that the measured energy level over the measured carrier, e.g., the received signal strength indicator (RSSI), is larger than or equal to a threshold level of energy.
  • the validation may reduce the time for the UE to establish a DC/CA connection.
  • a UE 401 may be configured to be in a connected mode.
  • the UE 401 in the connected mode may be in communication with a primary cell 402 and/or with one or more candidate target cells 403/404 (hereafter generally referenced as target cells).
  • the UE 401 may be configured to perform one or more DC/CA measurements in the connected mode.
  • the UE 401 may transmit the one or more idle/inactive mode measurements to the primary cell 402.
  • the UE 401 further transmit information regarding the target cell(s) to which the UE 401 is connected and mobile status information of the UE.
  • the primary cell 402 may be configured to extract the one or more mobile status information of the connected UE 401.
  • the network and/or the primary cell 402 may be configured to use the mobile status information from a UE to predict one or more target cells with which the UE 401 may subsequently establish a DC/CA connection.
  • the primary cell 402 may transmit one or more requests to one or more additional target cells 403/404, wherein the one or more requests may solicit configuration information for one or more additional assisting reference signals to be provided by the one or more target cells 403/404.
  • the one or more target cells 403/404 may, in turn, provide configuration information, such as CSR-RS or SSB or other positioning reference signal configuration information, for one or more additional reference signals that may be provided by the target cell(s).
  • operations 3-4 may be performed for one or more UEs 401 that are low-mobility and/or static and the primary cell 402 may be configured to postpone the procedures of operations 3-4, for high mobile UEs, until the primary cell 402 has received additional information from a high-mobile UE during random access (RA) procedures (e.g., depicted in operation 25 in Figure 4B).
  • RA random access
  • the primary cell 402 may transmit one or more idle/inactive mode measurement configurations, e.g., EMR measurement configurations, to the UE 401, such as over a legacy SS burst.
  • the primary cell 402 may then configure the UE 401 to obtain measurements from one or more target cells 403 in accordance with an example embodiment.
  • the primary cell 402 may be configured to provide the UE 401 with information regarding validation configurations and conditions to facilitate validation of one or more idle/inactive mode measurements, information regarding enhanced measurement configurations to facilitate one or more enhanced measurements and/or one or more additional RS configurations such as for the continuation of measurements following the expiration of the timer, validation of the idle/inactive mode measurements and/or performance of enhanced measurements.
  • the UE 401 may be configured to use at least one of a combination of the validity conditions transmitted by the primary cell 402.
  • the validity conditions may consist of: (1) the UE location and mobility status of the UE during the idle/inactive mode measurements, such as EMR measurements, and/or after the expiration of the T331 timer (e.g., static UE, low-mobility UE, normal-mobility UE, high- mobility UE, and/or the like), (2) the T331 timer length and/or channel variations (including cell and beam switches) during the measurements, (3) UE location with respect to one or more DC/CA measured cells, (4) the time gap between the expiration of the T331 timer (e.g., last EMR measurement of that cell/carrier) and the validity measurements, (5) the service requirements (e.g., enhanced mobile broadband (eMMB), extended reality (XR), and/or ultrareliable and low latency communications (URLLC)) which may be derived, for instance, on 5G quality of service (QoS) Indicators (5QI), data radio bearer (DRB), and/or associated slice information, (6) the measurement difference
  • the validity measurement configurations and/or potential validity condition may further or alternatively include at least one of the following: the measurement configuration of the relevant DL reference signal(s) to be used for validity measurements and/or the validity type (e.g., location based, measurement based, a combination of location and measurement, etc.).
  • the measurement configuration of the relevant DL RS(s) could include: (1) measurement validity type (e.g., cell quality, beam measurement, etc.
  • the optional validation configuration may also indicate whether the UE shall use one or more of these validation techniques, and/or an indication as to the manner in which to combine the foregoing validation techniques with, for example, one or more of the validation techniques described above.
  • the primary cell 402 may be configured to provide the UE 401 with one or more signals comprising information regarding the validation of prior idle/inactive mode measurements including but not limited to EMR measurements.
  • the signals may configure the UE 401 to use at least one validation measurement described above to determine the conditions of the prior measurements of the RS from the one or more additional target cells and/or the conditions to validate the prior measurements.
  • the primary cell 402 may provide the UE 401 with one or more enhanced measurement configurations, thereby defining different types of measurements or additional measurements to be made relative to prior measurements performed by the UE.
  • the enhanced measurement configurations may define different types of measurements or additional measurements to be made relative to prior measurements performed by the UE with respect to EMR.
  • the primary cell 402 may provide the UE 401 with one or more additional RS transmission configurations.
  • the information regarding additional RS transmission configurations may define the type of additional RS to be provided by one or more target cells, the timing of the additional RS from the one or more target cells and/or other characteristics of the additional RS that will permit the UE to receive and measure the additional RS.
  • the UE can make additional measurements, validate prior measurements including, but not limited to, prior EMR measurements and/or perform enhanced measurements, all of which provide information that increases the speed of DC/CA setup, such as by enabling the network to more easily estimate the primary and target cells and to preconfigure the cells for DC/CA setup.
  • the primary cell 402 may be configured to increase the speed at which the UE 401 is able to detect and/or connect/resume connection with one or more additional target cells 403/404 by providing the UE with one or more candidates for a target cell configuration.
  • the identification of the one or more additional target cells may alternatively be performed during the RRC -resume or RRC-setup period (depicted in Figure 3).
  • the primary cell 402 may further transmit one or more RRC release signals to the UE 401 to cause the UE 401 to transition from a connected state to an inactive/idle state, wherein a UE 401 that supports EMR may preform one or more legacy EMR measurements, such as until the expiration of the T331 timer.
  • the primary cell 402 may be configured to transmit one or more activation commands to one or more target cells 403/404.
  • the one or more activation commands may be configured to request one or more additional RS from the target cells 403/404.
  • the target cells may optionally respond to the activation command, such as by confirming receipt thereof.
  • a measurement process is then initiated.
  • the primary cell 402 may page the UE 401 in an inactive/idle mode to alert the UE that one or more additional RS will be provided by one or more target cells using a paging message.
  • the paging may occur concurrently with the transmission of the activation command to the one or more target cells 403.
  • an indication of the transmission of the one or more additional RS may be provided along with additional information during the paging or during a random access procedure or a radio resource control setup/resume procedure.
  • the measurement process then commences as shown in operation 14.
  • the measurement process may consist of obtaining idle/inactive mode measurements of the additional RS transmitted by the target cell(s).
  • the measurements of the additional RS may continue the EMR measurements.
  • the measurements of the additional RS may be a continuation of other types of idle/inactive mode measurements of the legacy RS previously provided by the target cell(s).
  • the measurement process may additionally or alternatively include performing validation based on the additional RS in order to validate prior idle/inactive mode measurements including, but not limited to, prior EMR measurements.
  • the measurement process may additionally or alternatively include the performance of enhanced measurements that may be in addition to and/or of a different type than idle/inactive mode measurements that were previously made including, but not limited to, EMR measurements.
  • the target cell(s) 403/404 provide additional RS during the idle/inactive mode and optionally within the RRC set up mode and the subsequent connected mode.
  • a target cell is configured to provide legacy RS.
  • the legacy RS may be transmitted repeatedly regardless of the mode of operation of the UE 401, such that legacy RS are transmitted while the UE is in the connected mode, the idle/inactive mode and the RRC set up mode.
  • the legacy RS are generally transmitted at a predefined frequency.
  • the additional RS are transmitted by the same target cell(s) and are in addition to the legacy RS as shown by the lighter dashed vertical lines in Figure 3.
  • the additional RS may be transmitted at the same frequency, a greater frequency or even a lower frequency than the legacy, but, in any event, are in addition to the legacy RS. As such, upon the transmission of the additional RS, the aggregate of the RS transmitted by the target cell(s) is greater than the legacy RS. Based on the additional RS, the UE may be configured to perform the measurement process, such as to obtain additional idle/inactive mode measurements, validate prior idle/inactive mode measurements and/or obtain enhanced measurements.
  • the UE 401 may be configured to resume the connection with the primary cell 402, such as by transmitting a random access message.
  • the primary cell 402 may have configured the UE 401 to send one or more requests to the primary cell 402.
  • the one or more requests may be an indication that the UE 401 may need one or more additional RS from one or more target cells 403/404.
  • the request from the UE 401 to the primary cell 402 may be in the form of a specific preamble and/or the like.
  • the primary cell 402 may be configured to respond to the one or more random access of the UE 401.
  • the primary cell 402 may respond with transmission of one or more updates regarding the additional RS to be provided by a target cell and/or updates regarding the additional idle/inactive mode measurements to be conducted, the validation conditions, and/or the enhanced measurements.
  • the UE 401 may transmit one or more requests to begin RRC-setup and/or resume RRC-setup, such as to begin to transition from the idle/inactive state to the RRC connected state.
  • the primary cell 402 is configured to receive the request and respond to the UE 401 granting the request.
  • the UE 401 may then finish the RRC-setup with the primary cell 402.
  • the target cell(s) may continue to provide the additional RS and the UE may continue the measurement process based upon the additional RS.
  • the UE 401 may be configured to complete the measurement process, such as by completing the continued idle/inactive mode measurements of the additional RS, completing the validation of prior idle/inactive mode measurements including, but not limited to prior EMR measurements, and/or completing the one or more enhanced measurements of the additional RS.
  • the UE 401 may be configured to report the measurement results from the measurement process to the primary cell.
  • the measurement results may include information regarding the continued idle/inactive mode measurements of the additional RS, information regarding the validation of prior idle/inactive mode measurements and/or information regarding the enhanced measurements of the additional RS.
  • the primary cell 402 may alternatively configure the UE 401 to transmit the measurement results as the UE
  • the primary cell 402 may be configured to transmit one or more cancellation signals to the one or more additional target cells in order to terminate the transmission of the additional RS.
  • the primary cell 402 may be configured to transmit the one or more cancellation signals based on at least in part on the measurement results from the completed one or more idle/inactive mode measurements.
  • the UE can take other action based on the measurement results.
  • the UE 401 may be configured to apply one or more target cell configurations based on the measurement results from the one or more completed idle/inactive mode measurements.
  • the primary cell 402 may send an indication to the UE 401 to apply one or more target cell configurations.
  • the UE 401 may be configured to apply one or more target cell configuration based on the measurement results from the one or more completed idle/inactive mode measurements.
  • the UE of another example embodiment may be configured to take action by switching from the primary cell 402 to a respective target cell based upon the measurement results that were obtained from the idle/inactive mode measurements of the target cells 403/404 such that the respective target cell then serves as the primary cell for the UE.
  • the UE 402 of an example embodiment may be configured to provide an indication that the reconfiguration is complete to the target cell(s) 403/404 for which the UE has applied the target cell configurations and may send one or more release signals to the one or more other target cells for which the UE has not applied the target cell configurations.
  • the UE 401 may be configured to transmit one or more RA signals to the target cell(s) 403/404.
  • the RA signals may be transmitted in order to initiate DC/CA setup which, in turn, will allow the UE to connect to or resume a connection with the target cell in the future without much delay in the commencement of communications between the UE and the target cell.
  • the DC/CA set up may be conducted in an efficient manner, both in terms of the time required for setup and the processing resources required for setup, thereby reducing the power consumption of the UE, decreasing the latency to setup or resume the connection with the target cell and/or increasing the throughput with the target cell.
  • the operations for the method for the uplink configuration are illustrated in Figures 4C-4D. As shown, the operations of Figures 4C-4D are the same as the corresponding operations for the downlink configuration depicted in Figures 4A-4B.
  • the activation in the uplink configuration is provided by a message requesting additional reference signals as well as additional information that is transmitted by the UE to the primary cell in operation 12 that serves to request the additional RS from one or more target cells.
  • this message may be as a random access message with the request for the additional RS being provided, for example, by the preamble.
  • the primary node responds to the message from the UE with an update as to the provision of additional RS by the target cell(s). This update from the primary node may be provided as a random access response.
  • FIG. 5 example flowcharts of the operations performed by an apparatus, such as the apparatus of Figure 2 embodied by a UE, a primary cell, and one or more target cells, respectively.
  • a method 500 is illustrated that can be carried out by an apparatus as embodied by a UE with the apparatus including means, such as the processor 202, the network interface 206 or the like, for initiating a measurement process 401.
  • the initiation of the measurement process may comprise the UE receiving a paging signal from the primary cell in a downlink configuration as shown in Figures 4A-4B.
  • the initiation of the measurement process may alternatively comprise the transmission of one or more additional reference signal requests from a UE to a primary cell in an uplink configuration as shown in Figures 4C-4D.
  • the apparatus also includes means, such as the processor 202, the network interface 206 and/or the like, for receiving, one or more additional reference signals from one or more target cells, at 502.
  • the one or more additional reference signals are in addition to the legacy RS transmitted by the one or more target cells.
  • the apparatus further includes means, such the processor 202 or the like, for determining measurement results based on one or more additional reference signals, at 403.
  • the 1 determination of the measurement results may be based on performing validation based on a relationship between an idle/inactive mode measurement obtained from the one or more additional RS and an idle/inactive mode measurement obtained prior to receiving the one or more additional RS, such as based on legacy RS received prior to expiration of a timer, e.g., the T331 timer.
  • the determination of the measurement results may additionally or alternatively comprise obtaining one or more enhanced measurements based on the one or more additional RS.
  • the enhanced measurements may be in addition to and/or of a different type than prior idle/inactive mode measurements that have been obtained, such as based on legacy RS.
  • the determination of the measurement results may also or alternatively including continuing to obtain idle/inactive mode measurements, such as following expiration of the timer.
  • These idle/inactive mode measurements may be of the same type that were previously obtain, such as based on legacy RS, with the additional idle/inactive mode measurements being obtained in an instance, for example, in which an insufficient number of idle/inactive mode measurements were obtained from the legacy RS.
  • the idle/inactive mode measurements may be EMR measurements or the validation of EMR measurements in an instance in which the UE supports EMR. However, the idle/inactive mode measurements need not be EMR measurements but can be other types of idle/inactive mode measurements, such as in an instance in which the UE is a non-EMR UE.
  • the apparatus further includes means, such a processor 202, memory 204, network interface 206, an/or the like, for taking action based upon the measurement results, at 504.
  • Various actions may be taken including the reporting of the measurement results and/or information derived from the measurement results from the UE to the primary cell.
  • the action may be also or alternatively include the UE requesting DC/CA connection to a different cell, such as a target cell targeted as a result of the measurement results.
  • the action may include the configuration of the UE and/or a cell, such as a target cell, based on the measurement results to facilitate more efficient DC/CA setup.
  • the action may include applying a radio resource control (RRC) configuration and/or applying an RRC reconfiguration.
  • RRC radio resource control
  • FIG. 6 an example flowchart illustrating the operations performed, such as by an apparatus as depicted in Figure 2 and embodied as the primary cell.
  • a method 600 is illustrated that can be carried out an apparatus embodied by a primary cell and that comprise means, such as the processor 202, and network interface 206 or the like, for configuring a user equipment (UE) to obtain idle/inactive mode measurements from one or more target cells, at 601.
  • the configuring of the UE may comprise causing transmission of one or more validation conditions to the UE to facilitate validation of one or more idle/inactive mode measurements based on the one or more validation conditions.
  • the configuring of the UE may additionally or alternatively comprise causing the transmission of one or more enhanced measurement configurations to the UE. Further, the configuring of the UE may include the transmission of additional RS configurations from the primary cell to the UE, such as based on information regarding the additional RS configurations that was provided by the target cell(s) in response to a request by the primary cell as described above with respect to Figures 4A-4D.
  • the apparatus of an example embodiment may include means such as the processor 202, the network interface 206 and/or the like, for obtaining configuration information for the one or more additional reference signals to be provided by the one or more target cells before the initiating of the measurement process, such as shown in operations 3 and 4 of Figures 4A and 4C.
  • the apparatus further includes means, such as processor 202, the network interface 206 and/or the like, for causing communication of the configuration information for the one or more additional reference signals to the UE.
  • the apparatus further includes means, such as processor 202, the network interface 206 and/or the like, for initiating a measurement process and causing the communication with the one or more target cells to provide one or more additional reference signals to a UE from which measurement results are derivable, at 602.
  • the initiation of the measurement process may include paging the UE in downlink configuration as shown in Figures 4A-4B or receiving a request for additional reference signals from the UE in the uplink configuration as shown in Figures 4C-4D.
  • the communication with the one or more target cells may comprise causing the transmission of one or more activation signals from the primary cell to the one or more target cells.
  • the apparatus further includes means, such as processor 202, the memory 204, and network interface 206 and/or the like for terminating further provision of additional reference signals from the one or more target cells following the provision of one or more additional reference signals. See block 603.
  • the termination of further provision of additional reference signals may comprise the primary cell receiving an indication from the UE that the measurement process is to be concluded and causing the communication with the one or more target cells to be terminated.
  • the apparatus of this example embodiment includes means, such as the processor 202, the network interface 206 or the like, for causing provision of reference signals to a user equipment, at 701.
  • the apparatus embodied by the target cell further includes means, such as the processor 202, the network interface 206 or the like, for receiving one or more activation signals from a primary cell serving the UE, at 702.
  • the method further includes means, such as the processor 202, the network interface 206 or the like, for causing provision of one or more additional reference (RS) signals to the UE, at 703.
  • the apparatus further includes means, such as the processor 202, the network interface 206 or the like, for terminating the provision of one or more additional reference signals in response to an indication from the UE that a measurement process is to be concluded, at 704.
  • the apparatus 200 also includes means, such as the processor 202, the network interface 206 or the like, for receiving a request for configuration information for the one or more additional reference signals. This request for configuration information is received prior to causing the provision of reference signals to the UE. In this example embodiment, the apparatus also includes causing the provision of configuration information to the primary cell for the one or more additional reference signals.
  • FIGS 5-7 illustrate flowcharts depicting operations according to an example embodiment of the present disclosure. It will be understood that each block of the flowcharts and combination of blocks in the flowcharts may be implemented by various means, such as hardware, firmware, processor, circuitry, and/or other communication devices associated with execution of software including one or more computer program instructions. For example, one or more of the procedures or operations described above may be embodied by computer program instructions. In this regard, the computer program instructions which embody the procedures or operations described above may be stored by a memory 204 of an apparatus (e.g., apparatus 200, UE 110) employing an embodiment of the present invention and executed by a processor 202.
  • an apparatus e.g., apparatus 200, UE 110
  • any such computer program instructions may be loaded onto a computer or other programmable apparatus (for example, hardware) to produce a machine, such that the resulting computer or other programmable apparatus implements the functions specified in the flowchart blocks.
  • These computer program instructions may also be stored in a computer-readable memory that may direct a computer or other programmable apparatus to function in a particular manner, such that the instructions stored in the computer- readable memory produce an article of manufacture the execution of which implements the function specified in the flowchart blocks.
  • the computer program instructions may also be loaded onto a computer or other programmable apparatus to cause a series of operations to be performed on the computer or other programmable apparatus to produce a computer- implemented process such that the instructions which execute on the computer or other programmable apparatus provide operations for implementing the functions specified in the flowchart blocks.
  • blocks of the flowcharts support combinations of means for performing the specified functions and combinations of operations for performing the specified functions for performing the specified functions. It will also be understood that one or more blocks of the flowcharts, and combinations of blocks in the flowcharts, can be implemented by special purpose hardware-based computer systems which perform the specified functions, or combinations of special purpose hardware and computer instructions.

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Abstract

L'invention concerne des techniques pour faciliter l'établissement d'une connexion à double connectivité/agrégation de porteuses (DC/CA) avec une cellule cible. Dans le contexte d'un procédé mis en oeuvre par un équipement utilisateur, un processus de mesure est effectué tandis qu'un équipement utilisateur desservi par une cellule primaire est dans un état inactif ou inactif. Le procédé consiste également à recevoir un ou plusieurs signaux de référence (RS) supplémentaires en provenance d'une ou de plusieurs cellules cibles. Le procédé consiste en outre à déterminer des résultats de mesure sur la base du ou des RS supplémentaires à partir de la ou des cellules cibles. Le procédé peut également consister à prendre une action sur la base des résultats de mesure. L'invention concerne également un procédé, un appareil et des supports de stockage lisibles par ordinateur correspondants pour une cellule primaire et une cellule cible.
PCT/EP2023/077587 2022-11-07 2023-10-05 Procédés et appareil pour déterminer des résultats de mesure sur la base de signaux de référence supplémentaires provenant d'une ou de plusieurs cellules cibles WO2024099645A1 (fr)

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Citations (6)

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