WO2024256065A1 - Déclenchement de libération de connexion de commande de ressources radioélectriques - Google Patents

Déclenchement de libération de connexion de commande de ressources radioélectriques Download PDF

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Publication number
WO2024256065A1
WO2024256065A1 PCT/EP2024/060672 EP2024060672W WO2024256065A1 WO 2024256065 A1 WO2024256065 A1 WO 2024256065A1 EP 2024060672 W EP2024060672 W EP 2024060672W WO 2024256065 A1 WO2024256065 A1 WO 2024256065A1
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Prior art keywords
terminal device
network device
threshold
location information
network
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Ceased
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PCT/EP2024/060672
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English (en)
Inventor
Ethiraj Alwar
Arun KALIRAJA B
Yogesh GAHLAUT
Andres ARJONA
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Nokia Solutions and Networks Oy
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Nokia Solutions and Networks Oy
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Priority to CN202480038821.6A priority Critical patent/CN121286070A/zh
Publication of WO2024256065A1 publication Critical patent/WO2024256065A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time

Definitions

  • Various example embodiments generally relate to the field of communication, and in particular, to a network device, a method, an apparatus and a computer readable storage medium for triggering a release of a radio resource control connection.
  • timing advance enables a terminal device to adjust its uplink transmission timing to fit a common reception timing reference used at a network device.
  • This kind of uplink transmission timing adjustment may apply to physical uplink shared channel (PUSCH) transmission, physical uplink control channel (PUCCH) transmission, sounding reference signal (SRS) transmission, etc.
  • the terminal device anticipates its uplink transmission with respect to its downlink reception timing by a TA value equal to the round trip delay between the terminal device and the network device.
  • the TA value to be used by a terminal device is determined by the network device, and is thus indicative of the distance between the terminal device and the network device.
  • example embodiments of the present disclosure provide a solution for triggering a release of a radio resource control connection when users are located inside a forbidden area, for instance beyond a national border.
  • a network device may comprise at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to: monitor a TA value of a terminal device to determine whether the TA value exceeds a TA threshold; based on determining that the TA value exceeds the TA threshold, request a network node to report location information of the terminal device; and based on determining that the terminal device is within a forbidden area based on the reported location information, trigger a release of a RRC connection of the terminal device with the network device.
  • a method In a second aspect, there is provided a method.
  • the method may comprise: monitoring, at a network device, a TA value of a terminal device to determine whether the TA value exceeds a TA threshold; based on determining that the TA value exceeds the TA threshold, requesting a network node to report location information of the terminal device; and based on determining that the terminal device is within a forbidden area based on the reported location information, triggering a release of a RRC connection of the terminal device with the network device.
  • an apparatus may comprise: means for monitoring, at a network device, a TA value of a terminal device to determine whether the TA value exceeds a TA threshold; means for requesting a network node to report location information of the terminal device based on determining that the TA value exceeds the TA threshold; and means for triggering a release of a RRC connection of the terminal device with the network device based on determining that the terminal device is within a forbidden area based on the reported location information.
  • a non-transitory computer readable medium comprising program instructions for causing an apparatus to perform a method comprising: monitoring, at a network device, a TA value of a terminal device to determine whether the TA value exceeds a TA threshold; based on determining that the TA value exceeds the TA threshold, requesting a network node to report location information of the terminal device; and based on determining that the terminal device is within a forbidden area based on the reported location information, triggering a release of a RRC connection of the terminal device with the network device.
  • a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus at least to: monitor, at a network device, a TA value of a terminal device to determine whether the TA value exceeds a TA threshold; based on determining that the TA value exceeds the TA threshold, request a network node to report location information of the terminal device; and based on determining that the terminal device is within a forbidden area based on the reported location information, trigger a release of a RRC connection of the terminal device with the network device.
  • the network device may comprise a monitoring circuitry configured to monitor a TA value of a terminal device to determine whether the TA value exceeds a TA threshold; and a requesting circuitry configured to request a network node to report location information of the terminal device based on determining that the TA value exceeds the TA threshold; and a triggering circuitry configured to trigger a release of a RRC connection of the terminal device with the network device based on determining that the terminal device is within a forbidden area based on the reported location information.
  • FIG. 1A illustrates an example network environment in which example embodiments of the present disclosure may be implemented
  • FIG. IB illustrates an example TA boundary in accordance with some example embodiments of the present disclosure
  • FIG. 2 illustrates an example signaling process for triggering a release of a radio resource control connection in accordance with some example embodiments of the present disclosure
  • FIG. 3 illustrates an example high level information flow of a distributed unit (DU) based solution in accordance with some example embodiments of the present disclosure
  • FIG. 4 illustrates an example high level information flow of a centralized unit (CU) based solution in accordance with some example embodiments of the present disclosure
  • FIG. 5 illustrates an example flowchart of a location aware geo-fence enforcement in accordance with some example embodiments of the present disclosure
  • FIG. 6 illustrates an example illustration of a successful location aware geo-fence enforcement in accordance with some example embodiments of the present disclosure
  • FIG. 7 illustrates an example illustration of a location aware geo-fence abort in accordance with some example embodiments of the present disclosure
  • FIG. 8 illustrates an example signaling process for a location aware DU for geofence enforcement in accordance with some example embodiments of the present disclosure
  • FIG. 9 illustrates an example signaling process for a location aware CU for geofence enforcement in accordance with some example embodiments of the present disclosure
  • FIG. 10 illustrates an example flowchart of a method implemented at a network device in accordance with some example embodiments of the present disclosure
  • FIG. 11 illustrates an example simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
  • FIG. 12 illustrates an example block diagram of an example computer readable medium in accordance with some embodiments of the present disclosure.
  • references in the present disclosure to “one embodiment,” “an embodiment,” “an example embodiment,” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described. [0029] It may be understood that although the terms “first” and “second” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.
  • first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments.
  • second element could be termed a first element, without departing from the scope of example embodiments.
  • the term “and/or” includes any and all combinations of one or more of the listed terms.
  • circuitry may refer to one or more or all of the following:
  • circuitry (c) hardware circuit(s) and or processor(s), such as a microprocessor s) or a portion of a microprocessor s) that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.
  • software e.g., firmware
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the term “communication network” refers to a network following any suitable communication standards, such as long term evolution (LTE), LTE-advanced (LTE-A), wideband code division multiple access (WCDMA), high-speed packet access (HSPA), narrow band Internet of things (NB-IoT) and so on.
  • LTE long term evolution
  • LTE-A LTE-advanced
  • WCDMA wideband code division multiple access
  • HSPA high-speed packet access
  • NB-IoT narrow band Internet of things
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the third generation (3G), the fourth generation (4G), 4.5G, the fifth generation (5G) communication protocols, and/or beyond.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the
  • the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP), for example, a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), a NR NB (also referred to as a gNB), a remote radio unit (RRU), a radio header (RH), a remote radio head (RRH), a relay, a low power node such as a femto, a pico, and so forth, depending on the applied terminology and technology.
  • BS base station
  • AP access point
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • NR NB also referred to as a gNB
  • RRU remote radio unit
  • RH radio header
  • RRH remote radio head
  • relay a low power no
  • terminal device refers to any end device that may be capable of wireless communication.
  • a terminal device may also be referred to as a communication device, user equipment (UE), a subscriber station (SS), a portable subscriber station, a mobile station (MS), or an access terminal (AT).
  • UE user equipment
  • SS subscriber station
  • MS mobile station
  • AT access terminal
  • the terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA), portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE), laptop-mounted equipment (LME), LT SB dongles, smart devices, wireless customer-premises equipment (CPE), an Internet of things (loT) device, a watch or other wearable, a head-mounted display (HMD), a vehicle, a drone, a medical device and applications (e.g., remote surgery), an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts), a consumer electronics device, a device operating on commercial, a relay node, an integrated access and backhaul
  • the term “resource”, “transmission resource”, “resource block”, “physical resource block” (PRB), “uplink (UL) resource” or “downlink (DL) resource” may refer to any resource for performing a communication, for example, a communication between a terminal device and a network device, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, a resource in a combination of more than one domain or any other resource enabling a communication, and the like.
  • a resource in time domain (such as, a subframe) will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.
  • the TA value is taken as a measure of the distance of the terminal device from the network device. TA value is used as a means to release the terminal device when applicable (such as national borders). However, this is not robust since this approach causes impact to other users and hence impacts the overall retainability key performance indicator (KPI).
  • KPI overall retainability key performance indicator
  • example embodiments of the present disclosure provide a mechanism to reduce the retainability KPI impact.
  • the TA value can be used as a means to release the terminal device when applicable, for example, when the terminal device is outside the national border.
  • the retainability KPI impact can be reduced, and the influence on other users who may be in the area defined by a TA value (based on some configured threshold) can also be reduced.
  • FIG. 1A illustrates an example of a communication network 100 in which some example embodiments of the present disclosure may be implemented.
  • the communication network 100 includes a terminal device (which may also be referred to as user equipment or UE) 102 and a network devices (which may also be referred to as a gNB or base station), such as the network device 104.
  • UE user equipment
  • gNB gNode B
  • the network device 104 the numbers of the network devices and the terminal devices are not limited. In other words, there may be one or more network devices 104 and one or more terminal devices 102 in the communication network 100.
  • the network device 104 can provide services to the terminal device 102, and the network device 104 and the terminal device 102 may communicate data and control information with each other. In some example embodiments, the network device 104 and the terminal device 102 may communicate with direct links/channels.
  • the network device 104 provides a serving cell 106 (which may also be referred to as a service area), and the terminal device 102 camps on the serving cell 106.
  • the network device 104 can provide multiple serving cells and the terminal device 102 may switch from a source cell to a target cell between the serving cells during its mobility. It is to be understood that the number of serving cell(s) shown in FIG. lA is for illustrative purposes without suggesting any limitation.
  • Communications in the network environment 100 may be implemented according to any proper communication protocol(s), comprising, but not limited to, cellular communication protocols of the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as institute for electrical and electronics engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • cellular communication protocols of the fourth generation (4G) and the fifth generation (5G) and on the like wireless local network communication protocols such as institute for electrical and electronics engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE institute for electrical and electronics engineers
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), frequency division duplex (FDD), time division duplex (TDD), multiple-input multiple-output (MIMO), orthogonal frequency division multiple (OFDM), discrete Fourier transform spread OFDM (DFT-s-OFDM), and/or any other technologies currently known or to be developed in the future.
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • FDD frequency division duplex
  • TDD time division duplex
  • MIMO multiple-input multiple-output
  • OFDM orthogonal frequency division multiple
  • DFT-s-OFDM discrete Fourier transform spread OFDM
  • a forbidden area 108 (which may be also referred to as a geo-fence or geo-slice). Services provided by the network device 104 may be barred within the forbidden area 108.
  • the forbidden area 108 may be geographical region defined by certain rules, such as a national border, a geo-fence or geographical coordinates.
  • the communication system 100 may comprise a network node 110.
  • the network node 110 may act as a location management function (LMF) or may provide LMF service.
  • LMF location management function
  • the communication system 100 may comprise any suitable number of devices adapted for implementing embodiments of the present disclosure.
  • FIG. IB illustrates an example TA boundary in accordance with some example embodiments of the present disclosure.
  • the TAboundary 112 may be determined based on a TA threshold. It is to be understood that if the distance of the terminal device 102 from the network device 104 is beyond the TA threshold, the terminal device 102 is outside the TA boundary 112. If the distance of the terminal device 102 from the network device 104 is below the TA threshold, the terminal device 102 is inside the TA boundary 112. [0048] In the case that the terminal device 102 is outside the TA boundary 112 meanwhile within the serving cell 106, the terminal device 102 may be inside the forbidden area 108. Thus, in this case, the service should be barred and a release of a RRC connection of the terminal device 102 with the network device 104 should be triggered.
  • FIG. 2 illustrates an example signaling process 200 for triggering a release of a radio resource control connection in accordance with some example embodiments of the present disclosure.
  • the network device 104 monitors (202) a TA value of the terminal device 102.
  • the network device 104 determines (204) whether the TA value exceeds a TA threshold. If the network device 104 determines that the TA value exceeds a TA threshold, it means that the terminal device 102 is outside the TA boundary. Thus, the location information will be required to determine whether the terminal device is inside or outside the forbidden area.
  • the terminal device 102 transmits (206) request 210 to report location information of the terminal device 102 to the network node 110.
  • the network node 110 receives (208) the request 210 from the network device 104.
  • the network node 110 transmits (214) a report 216 of the location information to the network device 104.
  • the network device 104 receives (212) the report 216 from the network node 110.
  • the network device 104 determines (218) whether the terminal device 102 is within the forbidden area. In case that the terminal device 102 is within the forbidden area, the network device 104 triggers (220) a release of a RRC connection of the terminal device 102 with the network device 104.
  • the retainability key performance indicator (KPI) impact can be reduced, and the influence on other users who may be in the area defined by a TA value (based on some configured threshold) can also be reduced.
  • KPI retainability key performance indicator
  • the network device 104 may comprise a DU and a CU.
  • the determination that the TA value exceeds the TA threshold and the determination that the terminal device is within the forbidden area may be performed by the DU, and the triggering of the release of the RRC connection may be performed by the CU upon trigger from the DU.
  • This approach is referred to as a DU based solution and will be described with FIG. 3.
  • FIG. 3 illustrates an example high level information flow 300 of a DU based solution in accordance with some example embodiments of the present disclosure.
  • this approach makes the gNB-DU UE location aware.
  • the gNB-DU may be configured with one or more geo-slices with co-ordinates of the edges along with the TA threshold value. If the UE location is within that geo-slice, the UE will be released.
  • a gNB-DU-operation administration and management (0AM) 302 may configure a gNB-DU 306 with a TA configuration and a geo-fence configuration.
  • the gNB-DU 302 may request the reporting of UE location when the appropriate conditions are met (e.g., TA Threshold exceeded).
  • a gNB-CU 308 may send the UE location information (based on any methods related to global navigation satellite system (GNSS) or NR positioning protocol A (NRPPa)).
  • GNSS global navigation satellite system
  • NRPPa NR positioning protocol A
  • the gNB-DU 306 may transmit the UE location request via Fl application protocol (F1AP) message 310 to the gNB-CU 308.
  • the gNB-CU 308 may transmit the UE location response via F1AP message 312 to the gNB-DU 306.
  • the gNB-DU 306 may transmit the UE context release request via Fl AP message 314 to the gNB-CU 308.
  • the gNB-CU 308 may transmit, to an access and mobility management function (AMF) device, a next generation application protocol (NGAP) message for requesting the location information of the terminal device 102.
  • AMF access and mobility management function
  • NGAP next generation application protocol
  • the AMF device may in turn sent a message to the LMF for requesting the location information of the terminal device 102.
  • the gNB-CU 308 may receive, from the AMF, a NGAP message including the location information of the terminal device 102.
  • the location information may be obtained by the AMF device from the LMF, and then included into the NGAP message sent to the gNB-CU 308.
  • This DU based solution can enable gNB-DU 306 to perform an additional geo-fence checking, for example, whether the reported UE location is in within the geo-fence. If it’s the case (e.g., UE has crossed national border), gNB-DU 306 may trigger the UE release.
  • the determination that the TA value exceeds the TA threshold may be performed by the DU, and the determination that the terminal device is within the forbidden area and the triggering of the release of the RRC connection may be performed by the CU.
  • This approach is referred to as a CU based solution and will be described with FIG. 4.
  • FIG. 4 illustrates an example high level information flow 400 of a CU based solution in accordance with some example embodiments of the present disclosure.
  • this approach introduces a new cause value indicating the “TA exceeded or resolved” condition from a gNB-DU 406 to a gNB-CU 408.
  • This new cause value can be indicated in the F1AP message.
  • UE context modification may be required.
  • the gNB-CU 408 may trigger the UE location tracking and when condition is met, triggers a UE release.
  • the gNB-DU-OAM 402 may configure gNB-DU 406 with a TA configuration.
  • the gNB-CU-OAM 404 may configure the gNB-CU 408 with a geo-fence configuration.
  • the gNB-DU 406 may monitor the TA value. If the TA value exceeds the TA threshold, the gNB-DU 406 may transmit the new cause value via F1AP message 410 to the gNB-CU 408.
  • the gNB-CU 408 may monitor the location of the UE. Based on that the condition is met, the gNB-CU 408 may decide to release the UE.
  • the gNB-CU 408 may transmit UE context release command via F1AP message 412 to the gNB-DU 406.
  • the gNB-CU 408 may transmit, to an AMF device, a NGAP message for requesting the location information of the terminal device 102.
  • the gNB-CU 408 may receive, from the AMF device, a NGAP message including the location information of the terminal device 102.
  • the network device 104 may be caused to trigger the release of the RRC connection by transmitting a RRC release message to the terminal device 102.
  • the network device 104 may disable the reporting of the location information of the terminal device 102.
  • the network device 104 determines whether a distance between the terminal device 102 and the forbidden area 108 is below a distance threshold. In some example embodiments, if the network device 104 determines the distance is below the distance threshold, the network device 104 may trigger periodic reporting of the location information of the terminal device. [0066] In some example embodiments, if the network device 104 determines that a speed of the terminal device 102 is below a first speed threshold, the network device 104 may increase a periodicity of the reporting. In some example embodiments, if the network device 104 determines that the speed of the terminal device is above a second speed threshold, the network device 104 may reduce the periodicity of the reporting.
  • the reporting of the location information may either a periodic or a one-shot reporting for the location information exchange. Periodic reports may be useful since they enable the RAN node to continuously monitor if the terminal device 102 is within the geo-fence or not and trigger the appropriate action immediately once it enters the geo-fence.
  • the one-shot report may be used to first check whether the terminal device 102 is near the geo-fence region or not before triggering a periodic report.
  • the RAN node may dynamically adjust the periodicity of the periodic reporting for different terminal devices depending on some criteria (such as their respective speed). For example, the RAN node can increase the periodicity for low speed terminal devices, while it can reduce the periodicity for high speed terminal devices.
  • This CU based solution can distribute functional responsibilities between gNB-CU and gNB-DU.
  • the gNB-DU may handle the TA evaluation and gNB-CU may get the location information from the user and evaluate it against the geo-fence.
  • FIG. 5 illustrates an example flowchart of a process 500 of a location aware geo-fence enforcement in accordance with some example embodiments of the present disclosure.
  • FIG. 5 describes the high level logical flow of the DU based solution.
  • configuration for a TA threshold and edges of the geo-fence may be configured to the gNB-CU.
  • accumulated TA may be set to an initial TA.
  • the initial TA may be equal to initial TA value from a random access channel (RACH) access.
  • RACH random access channel
  • accumulated TA may be updated by adding the TA evaluated during connected mode transmission.
  • the process 500 may continue to 510. If the accumulated TA is lower than the TA threshold, the process 500 may go back to 506.
  • the process 500 may configure measurement to get location of the UE. The process 500 may use the location in the measurement reports sent by the UE.
  • the process 500 may check if the UE location is inside the configured geo slice (which may be used interchangeably with geo fence). If the UE location is inside the configured geo slice, the process 500 may continue to 514. If the UE location is outside the configured geo slice, the process 500 may continue back to 506.
  • the process 500 may initiate a release of a RRC connection of the UE with the gNB.
  • the process 500 may check if the location reporting measurement is configured for the UE. If yes, the process 500 may continue to 518. If not, the process 500 may go back to 506. At 518, the process 500 may remove the location reporting measurement configuration.
  • FIG. 6, illustrates an example illustration 600 of a successful location aware geo-fence enforcement in accordance with some example embodiments of the present disclosure.
  • the UE is in position A which is inside the TA boundary 602 of the cell 604.
  • the UE moves to position-B which is outside the TA boundary 602. At this point, it may enable location reporting measurement through measurement configuration. UE will start reporting measurements.
  • the UE moves to position-C. Since position-C is outside the configured geo slice 606, the UE is not released. At 600D, the UE moves to position-D which is inside the configured geo slice 606 (e.g., outside the national border). It may initiate a RRC release of the UE.
  • FIG. 7, illustrates an example illustration 700 of a location aware geo-fence abort in accordance with some example embodiments of the present disclosure.
  • the UE is in position A which is inside the TA boundary 702 of the cell 704.
  • the UE moves to position-B which is outside the TA boundary 702. At this point, it may enable location reporting measurement through measurement configuration. UE will start reporting measurements.
  • UE moves to position-C which is inside the TA boundary 702. It may disable the location reporting measurement configuration.
  • FIG. 8 illustrates an example signaling process 800 for a location aware DU for geo-fence enforcement in accordance with some example embodiments of the present disclosure.
  • a UE 802 may be an example of the terminal device 102.
  • ADU 804, a CU 806 and an 0AM 808 may be comprised in the network device 104.
  • An LMF 812 may be hosted by the network node 110.
  • each step may have one or more signaling.
  • the 0 AM 808 may configure the DU 804 with the TA threshold and the “geo-fence” configuration.
  • the OAM 808 may transmit (814B) configuration 816 to the DU 804.
  • the configuration 816 may comprise the TA threshold and edges of the geo-fence.
  • the DU 804 may receive (814 A) the configuration 816 from the OAM 808.
  • the DU may evaluate the TA value against the TA threshold. Once the TA value crosses the threshold, step-2a or step-2b may be performed.
  • DU 804 may request CU 806 to enable location information. This may be done via a new F1AP message F1AP: UE Location Request.
  • F1AP UE Location Request.
  • the gNB may request the AMF 810 to trigger location service request towards the LMF 812 via a new NGAP: Location Service Request message.
  • the DU 804 may evaluate the TA value of the UE 802 against the TA threshold. Once the TA value crosses the TA threshold, the DU 804 may decide (818) to enable location reporting.
  • the DU 804 may transmit (820A) aFlAP message 822 comprising UE location request to the CU 806.
  • the CU 806 may receive (820B) the F1AP message 822.
  • the CU 806 may transmit (824A) a location service request 826 via a NGAP message to an AMF 810.
  • the AMF 810 may receive (824B) the location service request 826.
  • the LMF 812 may receive a location service request from the AMF 810, and may initiate the gNB to report measurements for the UE 802.
  • the gNB may configure measurement to the UE to report location information via RRC Reconfiguration.
  • the AMF 810 may transmit (828A) a location service request 830 to the LMF 812.
  • the LMF 812 may receive (828B) the location service request 830.
  • the LMF 812 may transmit (832B) an E-CID measurement initiation request 834 via an NRPPa message to the CU 806.
  • the CU 806 may receive (832A) the E-CID measurement initiation request 834.
  • the CU 806 may transmit (836B) a F1AP message 838 called DL RRC message transfer to the DU 804 via a F1AP message.
  • the DU 804 may receive (836A) the F1AP message 838.
  • the DU 804 may transmit (840B) a RRC reconfiguration message 842 to the UE 802.
  • the UE 802 may receive (840A) the RRC reconfiguration message 842.
  • the UE 802 may transmit (844A) a reconfiguration complete message 846 to the DU 804.
  • the DU 804 may receive (844B) the reconfiguration complete message 846.
  • the DU 804 may transmit (848A) aFlAP message 850 called of a UL RRC message transfer to the CU 806 via a F1AP message.
  • the CU 806 may receive (848B) the F1AP message 850.
  • the CU 806 may transmit (852A) an E-CID measurement initiation response 854 via an NRPPa message to the LMF 812.
  • the LMF 812 may receive (852B) the E-CID measurement initiation response 854.
  • UE 802 may start to report the measurement via RRC Measurement report, and the gNB may report it to the LMF 812.
  • the LMF 812 may derive the UE location based on the measurement reports and may share it with the AMF 810 via a location service response.
  • the UE 802 may transmit (856A) a measurement report 858 to the DU 804.
  • the DU 804 may receive (856B) the measurement report 858.
  • the DU 804 may transmit (860A) a F1AP message 862 called a UL RRC message via a F1AP message.
  • the CU 806 may receive (860B) the F1AP message 862.
  • the CU 806 may transmit (864A) an E-CID measurement report 866 to the LMF 812 via an NRPPa message.
  • the LMF 812 may receive (864B) the E-CID measurement report 866.
  • the LMF 812 may transmit (868B) a location service response 870 to the AMF 810.
  • the AMF 810 may receive (868 A) the location service response 870.
  • the AMF 810 may provide the location information via a new NGAP: Location Service Response message.
  • CU 806 may update the same to gNB-DU via a new F1AP Message
  • F1AP UE Location Info Notification.
  • DU 804 may decide if the user has to be released or not.
  • the AMF 810 may transmit (872B) a location service response 874 via a NGAP message to the CU 806.
  • the CU 806 may receive (872A) the location service response 874.
  • the CU 806 may transmit (876B) a UE location information notification 878 via a F1AP message.
  • the DU 804 may receive (876A) the UE location information notification 878.
  • the DU 804 may decide (880) to release the UE 802.
  • the DU 804 may initiate the UE release.
  • the DU 804 may initiate (882) a procedure for releasing the UE 802.
  • FIG. 9 illustrates an example signaling process 900 for a location aware CU for geo-fence enforcement in accordance with some example embodiments of the present disclosure.
  • a UE 902 may be an example of the terminal device 102.
  • ADU 904, a CU 906 and an 0AM 908 may be comprised in the network device 104.
  • An LMF 912 may be hosted by the network node 110.
  • each step may have one or more signaling.
  • the 0AM 908 may configure the DU 904 with the TA threshold.
  • the OAM 908 may configure the CU 906 with geo-fence configuration.
  • the OAM 908 may transmit (914B) configuration 916 to the CU 906.
  • the configuration 916 may comprise edges of the geo-fence.
  • the CU 906 may receive (914A) the configuration 916 from the OAM 908.
  • the OAM 908 may transmit (918B) configuration 920 to the DU 904.
  • the configuration 920 may comprise the TA threshold.
  • the DU 904 may receive (918 A) the configuration 920 from the OAM 908.
  • the DU 904 may evaluate the TA value of the user. If the TA value is above the TA threshold, the DU 904 may initiate geo-location evaluation for the user at the CU 906. This is done via F1AP: UE Context Modification required message, where a new cause value is added, such as TA threshold exceeded or alike.
  • the DU 904 may evaluate the TA value of the UE 902 against the TA threshold. Once the TA value crosses the TA threshold, the DU 904 may decide (922) to enable location reporting. The DU 904 may transmit (924 A) the cause value 926 via a F1AP message. The CU 906 may receive (924B) the cause value 926.
  • step-3 once CU 906 sees the new cause value, it may request the AMF 910 for location information and it may configure location reporting to the user via measurement configuration.
  • the details of the signaling will be referred to steps 2 and 3 of FIG. 8.
  • step-4 the UE 906 may start to report location via Measurement Report.
  • the details of the signaling will be referred to step 4 of FIG. 8.
  • step 3 and step 4 of FIG. 9 will not be described herein.
  • the LMF 912 may share the location service response to AMF 910 and the same may be shared with gNB via a new NGAP message: Location Service Response.
  • the AMF 910 may transmit (974B) a location service response 976 via a NGAP message to the CU 906.
  • the CU may receive (974A) the location service response 976.
  • the CU 906 may decide (928) to release the UE 902 based on the location of the UE 902 being inside the geo-fence. For step-6, if the UE location is within the geo-fence configured at the CU 906, then the CU 906 may initiate (984) release of the user.
  • FIG. 10 illustrates an example flowchart of a method 1000 implemented at a network device in accordance with some example embodiments of the present disclosure.
  • FIG. 10 will be described with reference to FIG. 1 A.
  • the network device 104 monitors a TA value of a terminal device 102 to determine whether the TA value exceeds a TA threshold.
  • the network device 104 requests a network node to report location information of the terminal device 102 based on determining that the TA value exceeds the TA threshold.
  • the network device 104 triggers a release of a RRC connection of the terminal device 102 with the network device 104 based on determining that the terminal device 102 is within a forbidden area based on the reported location information.
  • the network device 104 may comprise a DU and a CU.
  • the DU may obtain, from an 0AM device, the TA threshold and information indicative of the forbidden area.
  • the network device 104 may request the network node 110 to report the location information of the terminal device 102 by: transmitting, by the DU to the CU, a first F1AP message for requesting the location information of the terminal device; and transmitting, by the CU to an AMF device, a first NGAP message for requesting the location information of the terminal device 102.
  • the CU may receive, from the AMF device, a second NGAP message including the location information of the terminal device 102; and the CU may transmit, to the DU, a second F1AP message including the location information of the terminal device 102.
  • the determination that the TA value exceeds the TA threshold and the determination that the terminal device 102 is within the forbidden area may be performed by the DU.
  • the triggering of the release of the RRC connection may be performed by the CU upon trigger from the DU.
  • the DU may obtain, from an 0AM device, information indicative of the forbidden area; and the DU may obtain, from the 0AM device, the TA threshold.
  • the network device 104 may request the network node 110 to report location information of the terminal device 102 by: transmitting, by the DU to the CU, a third F1AP message including a cause value indicating that the TA value exceeds the TA threshold; and transmitting, by the CU to an AMF device, a third NGAP message for requesting the location information of the terminal device 102.
  • the CU may receive, from the AMF device, a fourth NGAP message including the location information of the terminal device 102.
  • the determination that the TA value exceeds the TA threshold may be performed by the DU.
  • the determination that the terminal device 102 is within the forbidden area and the triggering of the release of the RRC connection may be performed by the CU.
  • the network device 104 may trigger the release of the RRC connection by transmitting a RRC Release message to the terminal device 102. In some example embodiments, the network device 104 may disable the reporting of the location information of the terminal device 102 based on determining that the TA value falls below the TA threshold.
  • the network device 104 may determine whether a distance between the terminal device 102 and the forbidden area is below a distance threshold based on determining that the terminal device 102 is outside the forbidden area based on the reported location information. The network device 104 may trigger periodic reporting of the location information of the terminal device 102 based on determining that the distance is below the distance threshold.
  • the reporting may be periodic.
  • the network device 104 may increase a periodicity of the reporting based on determining that a speed of the terminal device 102 is below a first speed threshold.
  • the network device 104 may reduce the periodicity of the reporting based on determining that the speed of the terminal device 102 is above a second speed threshold.
  • the network node may host a location management function (LMF).
  • LMF location management function
  • the retainability key performance indicator (KPI) impact can be reduced, and the influence on other users who may be in the area defined by a TA value (based on some configured threshold) can also be reduced.
  • KPI retainability key performance indicator
  • an apparatus capable of performing the method 1000 may comprise means for performing the respective steps of the method 1000.
  • the means may be implemented in any suitable form.
  • the means may be implemented in a circuitry or software module.
  • the apparatus may comprise means for monitoring, at a network device, a TA value of a terminal device to determine whether the TA value exceeds a TA threshold; means for requesting a network node to report location information of the terminal device based on determining that the TA value exceeds the TA threshold; and means for triggering a release of a RRC connection of the terminal device with the network device based on determining that the terminal device is within a forbidden area based on the reported location information.
  • the apparatus may further comprise a DU and a CU. In some example embodiments, the apparatus may further comprise means for obtaining, by the DU from an 0AM device, the TA threshold and information indicative of the forbidden area.
  • the means for requesting a network node to report location information of the terminal device may comprise means for transmitting, by the DU to the CU, a first Fl F1AP message for requesting the location information of the terminal device; and means for transmitting, by the CU to an AMF device, a first NGAP message for requesting the location information of the terminal device.
  • the apparatus may comprise means for receiving, by the CU from the AMF device, a second NGAP message including the location information of the terminal device; and means for transmitting, by the CU to the DU, a second F1AP message including the location information of the terminal device.
  • the determination that the TA value exceeds the TA threshold and the determination that the terminal device is within the forbidden area may be performed by the DU.
  • the triggering of the release of the RRC connection may be performed by the CU upon trigger from the DU.
  • the apparatus may comprise means for obtaining, by the CU from an 0AM device, information indicative of the forbidden area; and means for obtaining, by the DU from the 0AM device, the TA threshold.
  • the means for requesting a network node to report location information of the terminal device may comprise means for transmitting, by the DU to the CU, a third Fl AP message including a cause value indicating that the TA value exceeds the TA threshold; and means for transmitting, by the CU to an AMF device, a third NGAP message for requesting the location information of the terminal device.
  • the apparatus may comprise means for receiving, by the CU from the AMF device, a fourth NGAP message including the location information of the terminal device.
  • the determination that the TA value exceeds the TA threshold may be performed by the DU. In some example embodiments, the determination that the terminal device is within the forbidden area and the triggering of the release of the RRC connection may be performed by the CU.
  • the apparatus may comprise means for triggering the release of the RRC connection may comprise means for transmitting a RRC Release message to the terminal device.
  • the apparatus may comprise means for disabling the reporting of the location information of the terminal device based on determining that the TA value falls below the TA threshold.
  • the apparatus may comprise means for determining whether a distance between the terminal device and the forbidden area is below a distance threshold based on determining that the terminal device is outside the forbidden area based on the reported location information; and means for triggering periodic reporting of the location information of the terminal device based on determining that the distance is below the distance threshold.
  • the reporting may be periodic.
  • the apparatus may comprise means for increasing a periodicity of the reporting based on determining that a speed of the terminal device is below a first speed threshold; and means for reducing the periodicity of the reporting based on determining that the speed of the terminal device is above a second speed threshold.
  • the network node may host a location management function (LMF).
  • LMF location management function
  • the apparatus may further comprise means for performing other steps in some embodiments of the method 1000.
  • the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
  • FIG. 11 illustrates an example simplified block diagram of a device that is suitable for implementing embodiments of the present disclosure.
  • the device 1100 may be provided to implement the communication device, for example the network device 104 as shown in FIG. 1A.
  • the device 1100 includes one or more processors 1110, one or more memories 1120 may couple to the processor 1110, and one or more communication modules 1140 may couple to the processor 1110.
  • the communication module 1140 is for bidirectional communications.
  • the communication module 1140 has at least one antenna to facilitate communication.
  • the communication interface may represent any interface that is necessary for communication with other network elements, for example the communication interface may be wireless or wireline to other network elements, or software based interface for communication.
  • the processor 1110 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 1100 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • the memory 1120 may include one or more non-volatile memories and one or more volatile memories.
  • the non-volatile memories include, but are not limited to, a read only memory (ROM) 1124, an electrically programmable read only memory (EPROM), a flash memory, a hard disk, a compact disc (CD), a digital video disk (DVD), and other magnetic storage and/or optical storage.
  • the volatile memories include, but are not limited to, a random access memory (RAM) 1122 and other volatile memories that will not last in the power-down duration.
  • a computer program 1130 includes computer executable instructions that are executed by the associated processor 1110.
  • the program 1130 may be stored in the ROM 1124.
  • the processor 1110 may perform any suitable actions and processing by loading the program 1130 into the RAM 1122.
  • the embodiments of the present disclosure may be implemented by means of the program so that the device 1100 may perform any process of the disclosure as discussed with reference to FIG. 10.
  • the embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
  • the program 1130 may be tangibly contained in a computer readable medium which may be included in the device 1100 (such as in the memory 1120) or other storage devices that are accessible by the device 1100.
  • the device 1100 may load the program 1130 from the computer readable medium to the RAM 1122 for execution.
  • the computer readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like.
  • FIG. 12 shows an example of the computer readable medium 1200 in form of CD or DVD.
  • the computer readable medium has the program 1130 stored thereon.
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the method 1000 as described above with reference to FIG. 10.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the computer program codes or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above.
  • Examples of the carrier include a signal, computer readable medium, and the like.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD- ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • the term “non-transitory,” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM).

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Des modes de réalisation de la présente divulgation concernent un dispositif de réseau, un procédé et un support pour déclencher une libération d'une connexion de commande de ressources radioélectriques. Un dispositif de réseau surveille une valeur d'avance temporelle (TA) d'un dispositif terminal pour déterminer si la valeur de TA dépasse un seuil de TA. Lorsqu'il est déterminé que la valeur de TA dépasse le seuil de TA, le dispositif de réseau demande à un nœud de réseau de rapporter des informations de localisation du dispositif terminal. Lorsqu'il est déterminé que le dispositif terminal se trouve dans une zone interdite sur la base des informations de localisation rapportées, le dispositif de réseau déclenche une libération d'une connexion de commande de ressources radioélectriques du dispositif terminal avec le dispositif de réseau. Avec les modes de réalisation de la présente divulgation, l'impact d'un indicateur de performances clés de continuabilité peut être réduit, et l'influence sur d'autres utilisateurs, qui peuvent se trouver dans la zone définie par une valeur de TA, peut également être réduite.
PCT/EP2024/060672 2023-06-16 2024-04-19 Déclenchement de libération de connexion de commande de ressources radioélectriques Ceased WO2024256065A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1889497B1 (fr) * 2005-06-10 2010-08-25 TruePosition, Inc. Bascules de pointe pour applications de services a site fixe dans un systeme de localisation sans fil
US8463297B2 (en) * 2007-12-27 2013-06-11 Trueposition, Inc. Subscriber selective, area-based service control
EP2816842B1 (fr) * 2012-02-17 2019-07-17 Datang Mobile Communications Equipment Co., Ltd. Procédé et dispositif de contrôle d'accès

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1889497B1 (fr) * 2005-06-10 2010-08-25 TruePosition, Inc. Bascules de pointe pour applications de services a site fixe dans un systeme de localisation sans fil
US8463297B2 (en) * 2007-12-27 2013-06-11 Trueposition, Inc. Subscriber selective, area-based service control
EP2816842B1 (fr) * 2012-02-17 2019-07-17 Datang Mobile Communications Equipment Co., Ltd. Procédé et dispositif de contrôle d'accès

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