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WO2022053153A1 - Lecture améliorée d'identifiants de cellules physiques pour réseau incluant un système de plate-forme à haute altitude - Google Patents

Lecture améliorée d'identifiants de cellules physiques pour réseau incluant un système de plate-forme à haute altitude Download PDF

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Publication number
WO2022053153A1
WO2022053153A1 PCT/EP2020/075588 EP2020075588W WO2022053153A1 WO 2022053153 A1 WO2022053153 A1 WO 2022053153A1 EP 2020075588 W EP2020075588 W EP 2020075588W WO 2022053153 A1 WO2022053153 A1 WO 2022053153A1
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WO
WIPO (PCT)
Prior art keywords
haps
pci
cell
coordinate
value
Prior art date
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Ceased
Application number
PCT/EP2020/075588
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English (en)
Inventor
Jeroen Wigard
Ryan Keating
Rafhael MEDEIROS DE AMORIM
Shahzada Basharat Rasool
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Nokia Technologies Oy
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Nokia Technologies Oy
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Filing date
Publication date
Application filed by Nokia Technologies Oy filed Critical Nokia Technologies Oy
Priority to PCT/EP2020/075588 priority Critical patent/WO2022053153A1/fr
Publication of WO2022053153A1 publication Critical patent/WO2022053153A1/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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • Some example embodiments may generally relate to mobile or wireless telecommunication systems, such as Long Term Evolution (LTE), fifth generation (5G) radio access technology (RAT), new radio (NR) access technology, and/or other communications systems.
  • LTE Long Term Evolution
  • 5G fifth generation
  • RAT radio access technology
  • NR new radio
  • certain example embodiments may relate to systems and/or methods for identifying a HAPS cell without hindering the function of an associated terrestrial network.
  • Examples of mobile or wireless telecommunication systems may include 5G RAT, the Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN), LTE Evolved UTRAN (E- UTRAN), LTE-Advanced (LTE- A), LTE-A Pro, NR access technology, and/or MulteFire Alliance.
  • 5G wireless systems refer to the next generation (NG) of radio systems and network architecture.
  • a 5G system is typically built on a 5G NR, but a 5G (or NG) network may also be built on E-UTRA radio. It is expected that NR can support service categories such as enhanced mobile broadband (eMBB), ultra-reliable low-latency-communication (URLLC), and massive machine type communication (mMTC).
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low-latency-communication
  • mMTC massive machine type communication
  • the next generation radio access network represents the RAN for 5G, which may provide radio access for NR, LTE, and LTE-A.
  • the nodes in 5G providing radio access functionality to a user equipment may be referred to as next- generation Node B (gNB) when built on NR radio, and may be referred to as next-generation eNB (NG-eNB) when built on E-UTRA radio.
  • gNB next- generation Node B
  • NG-eNB next-generation eNB
  • a method may include receiving, by a user equipment, at least one physical cell identifier (PCI) value configured to be used by at least one cell.
  • the method may further include detecting, by the user equipment, at least one high altitude platform station (HAPS) cell based upon the at least one received PCI value.
  • the method may further include transmitting, by the user equipment, at least one measurement report comprising one or more of at least one enhanced global cell identifier (EGCI) or at least one HAPS coordinate.
  • PCI physical cell identifier
  • HAPS high altitude platform station
  • the method may further include reading, by the user equipment, one or more of at least one ECGI or at least one HAPS coordinate based upon at least one determination that at least one received PCI value comprises at least one HAPS PCI value.
  • the method may further include receiving, by the user equipment, at least one known terrestrial network (TN) PCI.
  • TN terrestrial network
  • the at least one cell may comprise at least one HAPS cell.
  • the at least one received PCI value may be associated with one or more of at least one area or at least one time.
  • one or more of at least one ECGI or at least one HAPS coordinate may be read upon determining at least one HAPS PCI is associated with the at least one area or at least one time.
  • the one or more of at least one EGCI or at least one HAPS coordinate may be configured to identify or report multiple HAPS operating with the same PCI within at least one area.
  • an apparatus may include means for receiving at least one physical cell identifier (PCI) value configured to be used by at least one cell.
  • the apparatus may further include means for detecting at least one high altitude platform station (HAPS) cell based upon the at least one received PCI value.
  • the apparatus may further include means for transmitting at least one measurement report comprising one or more of at least one enhanced global cell identifier (EGCI) or at least one HAPS coordinate.
  • PCI physical cell identifier
  • HAPS high altitude platform station
  • EGCI enhanced global cell identifier
  • the apparatus may further include means for reading one or more of at least one ECGI or at least one HAPS coordinate based upon at least one determination that at least one received PCI value comprises at least one HAPS PCI value.
  • the apparatus may further include means for receiving at least one known terrestrial network (TN) PCI.
  • TN terrestrial network
  • the at least one cell may comprise at least one HAPS cell.
  • the at least one received PCI value may be associated with one or more of at least one area or at least one time.
  • one or more of at least one ECGI or at least one HAPS coordinate may be read upon determining at least one HAPS PCI is associated with the at least one area or at least one time.
  • the one or more of at least one EGCI or at least one HAPS coordinate may be configured to identify or report multiple HAPS operating with the same PCI within at least one area.
  • an apparatus may include at least one processor and at least one memory including computer program code.
  • the at least one memory and the computer program code may be configured to, with the at least one processor, cause the apparatus to at least receive at least one physical cell identifier (PCI) value configured to be used by at least one cell.
  • the at least one memory and the computer program code may be further configured to, with the at least one processor, cause the apparatus to at least detect at least one high altitude platform station (HAPS) cell based upon the at least one received PCI value.
  • the at least one memory and the computer program code may be further configured to, with the at least one processor, cause the apparatus to at least transmit at least one measurement report comprising one or more of at least one enhanced global cell identifier (EGCI) or at least one HAPS coordinate.
  • EGCI enhanced global cell identifier
  • the at least one memory and the computer program code may be further configured to, with the at least one processor, cause the apparatus to at least read one or more of at least one ECGI or at least one HAPS coordinate based upon at least one determination that at least one received PCI value comprises at least one HAPS PCI value.
  • the at least one memory and the computer program code may be further configured to, with the at least one processor, cause the apparatus to at least receive at least one known terrestrial network (TN) PCI.
  • TN terrestrial network
  • the at least one cell may comprise at least one HAPS cell.
  • the at least one received PCI value may be associated with one or more of at least one area or at least one time.
  • one or more of at least one ECGI or at least one HAPS coordinate may be read upon determining at least one HAPS PCI is associated with the at least one area or at least one time.
  • the one or more of at least one EGCI or at least one HAPS coordinate may be configured to identify or report multiple HAPS operating with the same PCI within at least one area.
  • a non-transitory computer readable medium may be encoded with instructions that may, when executed in hardware, perform a method.
  • the method may include receiving at least one physical cell identifier (PCI) value configured to be used by at least one cell.
  • the method may further include detecting at least one high altitude platform station (HAPS) cell based upon the at least one received PCI value.
  • the method may further include transmitting at least one measurement report comprising one or more of at least one enhanced global cell identifier (EGCI) or at least one HAPS coordinate.
  • PCI physical cell identifier
  • HAPS high altitude platform station
  • EGCI enhanced global cell identifier
  • the method may further include reading one or more of at least one ECGI or at least one HAPS coordinate based upon at least one determination that at least one received PCI value comprises at least one HAPS PCI value.
  • the method may further include receiving at least one known terrestrial network (TN) PCI.
  • TN terrestrial network
  • the at least one cell may comprise at least one HAPS cell.
  • the at least one received PCI value may be associated with one or more of at least one area or at least one time.
  • one or more of at least one ECGI or at least one HAPS coordinate may be read upon determining at least one HAPS PCI is associated with the at least one area or at least one time.
  • the one or more of at least one EGCI or at least one HAPS coordinate may be configured to identify or report multiple HAPS operating with the same PCI within at least one area.
  • a computer program product may perform a method.
  • the method may include receiving at least one physical cell identifier (PCI) value configured to be used by at least one cell.
  • the method may further include detecting at least one high altitude platform station (HAPS) cell based upon the at least one received PCI value.
  • the method may further include transmitting at least one measurement report comprising one or more of at least one enhanced global cell identifier (EGCI) or at least one HAPS coordinate.
  • PCI physical cell identifier
  • HAPS high altitude platform station
  • EGCI enhanced global cell identifier
  • the method may further include reading one or more of at least one ECGI or at least one HAPS coordinate based upon at least one determination that at least one received PCI value comprises at least one HAPS PCI value.
  • the method may further include receiving at least one known terrestrial network (TN) PCI.
  • TN terrestrial network
  • the at least one cell may comprise at least one HAPS cell.
  • the at least one received PCI value may be associated with one or more of at least one area or at least one time.
  • one or more of at least one ECGI or at least one HAPS coordinate may be read upon determining at least one HAPS PCI is associated with the at least one area or at least one time.
  • the one or more of at least one EGCI or at least one HAPS coordinate may be configured to identify or report multiple HAPS operating with the same PCI within at least one area.
  • an apparatus may include circuitry configured to receive at least one physical cell identifier (PCI) value configured to be used by at least one cell.
  • the circuitry may further be configured to detect at least one high altitude platform station (HAPS) cell based upon the at least one received PCI value.
  • the circuitry may further be configured to transmit at least one measurement report comprising one or more of at least one enhanced global cell identifier (EGCI) or at least one HAPS coordinate.
  • PCI physical cell identifier
  • HAPS high altitude platform station
  • the circuitry may further be configured to read one or more of at least one ECGI or at least one HAPS coordinate based upon at least one determination that at least one received PCI value comprises at least one HAPS PCI value.
  • the circuitry may further be configured to receive at least one known terrestrial network (TN) PCI.
  • TN terrestrial network
  • the at least one cell may comprise at least one HAPS cell.
  • the at least one received PCI value may be associated with one or more of at least one area or at least one time.
  • one or more of at least one ECGI or at least one HAPS coordinate may be read upon determining at least one HAPS PCI is associated with the at least one area or at least one time.
  • the one or more of at least one EGCI or at least one HAPS coordinate may be configured to identify or report multiple HAPS operating with the same PCI within at least one area.
  • FIG. 1 illustrates an example of PCI collision.
  • FIG. 2 illustrates an example of PCI confusion.
  • FIG. 3 illustrates an example of a HAPS with a given PCI.
  • FIG. 4 illustrates an example of a signaling diagram according to certain embodiments.
  • FIG. 5 illustrates an example of a flow diagram of a method according to various embodiments.
  • FIG. 6 illustrates an example of a flow diagram of another method according to some embodiments.
  • FIG. 7 illustrates an example of various network devices according to certain embodiments.
  • FIG. 8 illustrates an example of a 5G network and system architecture according to various embodiments.
  • High altitude platform stations can be included as a part of telecommunications infrastructure for rural and remote areas using stratospheric, airborne platforms.
  • HAPS can operate at altitudes between 3 and 22 kilometers (km), and provide service up to 1,000 km away with a service area of 800,000 km 2 , depending on the minimum elevation angle received from the user’s location.
  • HAPS may also be provided on balloons and/or solar-powered, high-altitude planes.
  • 3GPP provides consideration of how HAPS co-exists with other non-terrestrial networks (NTN), including low Earth orbit (LEO) and geostationary orbit (GEO) satellites. Co-existence challenges may occur when operating a HAPS as part of the same public land mobile network (PLMN) on the same frequency as the terrestrial network.
  • NTN non-terrestrial networks
  • LEO low Earth orbit
  • GEO geostationary orbit
  • HAPS can generally fill coverage gaps of terrestrial networks with negligible interference in the areas covered by the terrestrial network.
  • handovers between terrestrial cells and HAPS can be complex.
  • handovers from HAPS to terrestrial cells may shield user equipment (UE) from terrestrial interference, while handovers from terrestrial cells to HAPS can protect UE from terrestrial coverage holes.
  • UE user equipment
  • Suitable handover performance can be provided when source cells have proper neighbour cell lists.
  • source cells may be aware of locations of target cells and how they may be reached. In terrestrial networks, this may be accomplished using a mapping of physical cell identifier (PCI) values to enhanced global cell identifier (ECGI) values. This may be further complicated with the HAPS continuously and potentially unpredictable moving in relation to the terrestrial cells.
  • PCI physical cell identifier
  • ECGI enhanced global cell identifier
  • PCIs are signatures in radio frequency (RF) domains defining a specific radio cell area, and generally have 2 contradicting targets.
  • PCIs may be short in order to ease the detection by terminals; in most instances, PCIs may include information in primary synchronization signals (PSS) and secondary synchronization signals (SSS) used for cell detection.
  • PSS primary synchronization signals
  • SSS secondary synchronization signals
  • PCIs may be interpreted by terminals with no knowledge of the cell.
  • PCIs must be unique in a local neighborhood requiring a large set of PCIs (z.e., long identifiers).
  • ECGI values may act as global unique cell identifiers (GUCIs), which may be too long for cell detection.
  • the terminal may be initially connected with PCI l; if a neighbor cell then uses the same PCI l, the terminal may interpret it as an echo of PCI l (z.e., the neighbor may not be aware that there are other cells).
  • the terminal may also experience significant interference of PCI l (ECGI3), leading to a radio link failure (RLF).
  • FIG. 2 illustrates two serving cells - ECGI1 and ECGI2 - having the same PCIl.
  • the UE reports PCIl to the network as the cell to which it may need a handover.
  • Serving cell ECGI2 is unaware of which cell it should initiate.
  • the terminal may initiate the handover to ECGI1, resulting in a RLF.
  • HAPS generally have line-of-sight connections, allowing predictable propagation, but complicated when moving across terrestrial cells. This unpredictable motion further complicates which HAPS is detectable from which ground locations at a particular time. For example, if a certain PCI is assigned to a given HAPS based on all neighboring PCIs to minimize collision/confusion/interference, when the HAPS changes position, the HAPS may move in such a way that the assigned HAPS PCI may become the new neighbor to a terrestrial network cell with the same PCI, or a new terrestrial neighbor PCI may not satisfy PCI interference constraints with regards to PCI planning, similar to the example shown in FIG. 3.
  • Certain embodiments described herein may have various benefits and/or advantages to overcome the disadvantages described above. For example, certain embodiments may identify a HAPS cell without hindering the function of the terrestrial network by reading ECGI proactively, such as where the RAN indicates particular PCI values, thereby saving time and network resources. Thus, certain embodiments discussed below are directed to improvements in computer-related technology.
  • FIG. 4 illustrates an example of a signaling diagram depicting how to allocate PCIs for moving HAPS using the same frequency as the terrestrial network.
  • UE 410 and NE 420 may be similar to UE 710 and NE 720, as illustrated in FIG. 7, according to certain embodiments.
  • NE 420 may transmit to UE 410 at least one PCI value configured to be used by at least one HAPS cell. Additionally or alternatively, NE 420 may transmit to UE 410 at least one known terrestrial network (TN) PCI.
  • TN terrestrial network
  • PCI values may be associated with any number of particular areas and/or times.
  • NE 420 may transmit to UE 410 smaller lists of PCIs in the HAPS range such that UE 410 does not need to measure ECGI and/or coordinates based on the locations of the HAPS and/or UE 410.
  • NE 420 may further reduce the list to optimize the need of UE 410 to measure beyond PCI.
  • NE 420 may transmit different lists for different areas to UE 410. For example, some HAPS with coordinates known by NE 420 to exceed a predefined distance from a given cell may be removed from the list to reduce the number of transmitted PCIs, thereby conserving network resources. NE 420 may also transmit the HAPS PCI values to UE 410 via broadcast.
  • UE 410 may measure at least one HAPS cell, including at least one PCI value. UE 410 may also determine that the at least one PCI value is a HAPS PCI value. At 405, UE 410 may detect at least one HAPS cell based upon the PCI values received at 401, and may read at least one ECGI and/or at least one HAPS coordinate at 407, which may also trigger at least one measurement report. In various embodiments, HAPS coordinates may be two-dimensional or three-dimensional coordinates, and/or may be received by UE 410 via broadcast information or side information, such as HAPS orbit/trajectory information.
  • UE 410 may transmit at least one triggered measurement report, which may include the ECGI and/or HAPS coordinates, to NE 420.
  • the ECGI and/or HAPS coordinates may be configured to identify correct HAPS where multiple HAPS operate with the same PCI within the same area.
  • NE 420 may optimize UE measurements by removing PCI x from the list in that area for a predefined period of time. For example, the predefined period of time may depend on the number of PCI and/or an expected time when new HAPS may drift into coverage (i.e., based on average HAPS mobility).
  • NE 420 may also report to a core network if two HAPS with the same PCI are within a predefined distance, enabling allocation via a different PCI.
  • FIG. 5 illustrates an example of a flow diagram of a method that may be performed by a UE, such as UE 710 illustrated in FIG. 7, according to various embodiments.
  • the UE may receive from a network entity, such as NE 720 in FIG. 7, at least one PCI value configured to be used by at least one HAPS cell. Additionally or alternatively, the UE may receive from the NE at least one known TN PCI.
  • PCI values may be associated with any particular area and/or time. For example, the UE may receive from the NE smaller lists of PCIs in the HAPS range such that the UE does not need to measure ECGI and/or coordinates based on the locations of the HAPS and/or the UE.
  • the NE may further reduce the list to optimize the need of the UE to measure beyond PCI.
  • the UE may receive different lists for different areas from the NE. For example, some HAPS with coordinates known by the NE to exceed a predefined distance from a given cell may be removed from the list to reduce the number of transmitted PCIs.
  • the UE may also receive the HAPS PCI values from the NE via broadcast.
  • the UE may measure at least one HAPS cell, including at least one PCI value. The UE may also determine that the at least one PCI value is a HAPS PCI value.
  • the UE may read at least one ECGI and/or at least one HAPS coordinate, which may also trigger at least one measurement report at 507.
  • HAPS coordinates may be two-dimensional or three-dimensional coordinates, and/or may be received by UE 410 via broadcast information or side information, such as HAPS orbit/trajectory information.
  • the UE may transmit at least one measurement report, which may include the ECGI and/or HAPS coordinates, to the NE.
  • the ECGI and/or HAPS coordinates may be configured to identify correct HAPS where multiple HAPS operate with the same PCI within the same area.
  • the NE may optimize UE measurements by removing PCI x from the list in that area for a predefined period of time. For example, the predefined period of time may depend on the number of PCI and/or an expected time when new HAPS may drift into coverage (i.e., based on average HAPS mobility).
  • the NE may also report to a core network if two HAPS with the same PCI are within a predefined distance, enabling allocation via a different PCI.
  • FIG. 6 illustrates an example of a flow diagram of a method that may be performed by a NE, such as NE 720 illustrated in FIG. 7, according to various embodiments.
  • the NE may transmit to a UE, such as UE 710 in FIG. 7, at least one PCI value configured to be used by at least one HAPS cell. Additionally or alternatively, the NE may transmit to the UE at least one known TN PCI.
  • PCI values may be associated with any particular area and/or time. For example, the NE may transmit to the UE smaller lists of PCIs in the HAPS range such that the UE does not need to measure ECGI and/or coordinates based on the locations of the HAPS and/or the UE.
  • the NE may further reduce the list to optimize the need of the UE to measure beyond PCI.
  • the NE may transmit different lists for different areas to the UE. For example, some HAPS with coordinates known by the NE to exceed a predefined distance from a given cell may be removed from the list to reduce the number of transmitted PCIs.
  • the NE may also transmit the HAPS PCI values to the UE via broadcast.
  • the NE may receive at least one measurement report, which may include ECGI and/or HAPS coordinates, from the UE.
  • the ECGI and/or HAPS coordinates may be configured to identify correct HAPS where multiple HAPS operate with the same PCI within the same area.
  • the NE may optimize UE measurements by removing PCI x from the list in that area for a predefined period of time. For example, the predefined period of time may depend on the number of PCI and/or an expected time when new HAPS may drift into coverage (i.e., based on average HAPS mobility).
  • the NE may also report to a core network if two HAPS with the same PCI are within a predefined distance, enabling allocation via a different PCI.
  • FIG. 7 illustrates an example of a system according to certain example embodiments.
  • a system may include multiple devices, such as, for example, UE 710 and/or NE 720.
  • UE 710 may include one or more of a mobile device, such as a mobile phone, smart phone, personal digital assistant (PDA), tablet, or portable media player, digital camera, pocket video camera, video game console, navigation unit, such as a global positioning system (GPS) device, desktop or laptop computer, single-location device, such as a sensor or smart meter, or any combination thereof.
  • a mobile device such as a mobile phone, smart phone, personal digital assistant (PDA), tablet, or portable media player, digital camera, pocket video camera, video game console, navigation unit, such as a global positioning system (GPS) device, desktop or laptop computer, single-location device, such as a sensor or smart meter, or any combination thereof.
  • GPS global positioning system
  • NE 720 may be one or more of a base station, such as an eNB or gNB, a serving gateway, a server, and/or any other access node or combination thereof. Furthermore, UE 710 and/or NE 720 may be one or more of a citizens broadband radio service device (CBSD).
  • CBSD citizens broadband radio service device
  • NE 720 may further comprise at least one gNB-CU, which may be associated with at least one gNB-DU.
  • the at least one gNB-CU and the at least one gNB-DU may be in communication via at least one Fl interface, at least one X n -C interface, and/or at least one NG interface via a 5GC.
  • UE 710 and/or NE 720 may include at least one processor, respectively indicated as 711 and 721.
  • Processors 711 and 721 may be embodied by any computational or data processing device, such as a central processing unit (CPU), application specific integrated circuit (ASIC), or comparable device.
  • the processors may be implemented as a single controller, or a plurality of controllers or processors.
  • At least one memory may be provided in one or more of the devices, as indicated at 712 and 722.
  • the memory may be fixed or removable.
  • the memory may include computer program instructions or computer code contained therein.
  • Memories 712 and 722 may independently be any suitable storage device, such as a non-transitory computer-readable medium.
  • a hard disk drive (HDD), random access memory (RAM), flash memory, or other suitable memory may be used.
  • the memories may be combined on a single integrated circuit as the processor, or may be separate from the one or more processors.
  • the computer program instructions stored in the memory, and which may be processed by the processors may be any suitable form of computer program code, for example, a compiled or interpreted computer program written in any suitable programming language.
  • Processors 711 and 721, memories 712 and 722, and any subset thereof, may be configured to provide means corresponding to the various blocks of FIGS. 4-6.
  • the devices may also include positioning hardware, such as GPS or micro electrical mechanical system (MEMS) hardware, which may be used to determine a location of the device.
  • MEMS micro electrical mechanical system
  • Other sensors are also permitted, and may be configured to determine location, elevation, velocity, orientation, and so forth, such as barometers, compasses, and the like.
  • transceivers 713 and 723 may be provided, and one or more devices may also include at least one antenna, respectively illustrated as 714 and 724.
  • the device may have many antennas, such as an array of antennas configured for multiple input multiple output (MIMO) communications, or multiple antennas for multiple RATs. Other configurations of these devices, for example, may be provided.
  • Transceivers 713 and 723 may be a transmitter, a receiver, both a transmitter and a receiver, or a unit or device that may be configured both for transmission and reception.
  • the memory and the computer program instructions may be configured, with the processor for the particular device, to cause a hardware apparatus, such as UE, to perform any of the processes described above (z.e., FIGS. 4-6). Therefore, in certain embodiments, a non-transitory computer- readable medium may be encoded with computer instructions that, when executed in hardware, perform a process such as one of the processes described herein. Alternatively, certain embodiments may be performed entirely in hardware.
  • an apparatus may include circuitry configured to perform any of the processes or functions illustrated in FIGS. 4-6.
  • circuitry may be hardware-only circuit implementations, such as analog and/or digital circuitry.
  • circuitry may be a combination of hardware circuits and software, such as a combination of analog and/or digital hardware circuitry with software or firmware, and/or any portions of hardware processors with software (including digital signal processors), software, and at least one memory that work together to cause an apparatus to perform various processes or functions.
  • circuitry may be hardware circuitry and or processors, such as a microprocessor or a portion of a microprocessor, that includes software, such as firmware, for operation. Software in circuitry may not be present when it is not needed for the operation of the hardware.
  • FIG. 8 illustrates an example of a 5G network and system architecture according to certain embodiments. Shown are multiple network functions that may be implemented as software operating as part of a network device or dedicated hardware, as a network device itself or dedicated hardware, or as a virtual function operating as a network device or dedicated hardware.
  • the NE and UE illustrated in FIG. 8 may be similar to UE 710 andNE 720, respectively.
  • the user plane function (UPF) may provide services such as intra-RAT and inter-RAT mobility, routing and forwarding of data packets, inspection of packets, user plane quality of service (QoS) processing, buffering of downlink packets, and/or triggering of downlink data notifications.
  • the application function (AF) may primarily interface with the core network to facilitate application usage of traffic routing and interact with the policy framework.
  • LEO Low Earth Orbit [0117] LTE Long-Term Evolution [0118J LTE-A Long-Term Evolution Advanced [0119] MCS Modulation and Coding Scheme [0120] MEMS Micro Electrical Mechanical System [0121] MME Mobility Management Entity [0122] mMTC Massive Machine Type Communication [0123] MPDCCH Machine Type Communication Physical Downlink Control Channel [0124] MTC Machine Type Communication [0125] NAS Non-Access Stratum [0126] NE Network Entity [0127] NG Next Generation [0128]NG-eNB Next Generation Evolved Node B [0129]NG-RAN Next Generation Radio Access Network [0130] NR New Radio [0131] NR-U New Radio Unlicensed [0132] NTN Non-Terrestrial Network [0133] OLLA Outer Loop Link Adaptation [0134] PCI Physical Cell Identifier [0135] PDA Personal Digital Assistance [0136] PLMN Public Land Mobile Network [0137] PSS Primary Synchronization Signal [0138]

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  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil pouvant faire intervenir la réception d'au moins une valeur d'identifiant de cellule physique (PCI) configurée pour être utilisée par au moins une cellule. Le procédé peut comprendre en outre la détection d'au moins une cellule de station de plate-forme à haute altitude (HAPS) d'après la ou les valeurs de PCI reçues. Le procédé peut comprendre en outre la transmission d'au moins un compte rendu de mesure comportant un ou plusieurs éléments parmi au moins un identifiant global de cellule améliorée (EGCI) ou au moins une coordonnée de HAPS.
PCT/EP2020/075588 2020-09-14 2020-09-14 Lecture améliorée d'identifiants de cellules physiques pour réseau incluant un système de plate-forme à haute altitude Ceased WO2022053153A1 (fr)

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WO2019098933A1 (fr) * 2017-11-16 2019-05-23 Telefonaktiebolaget Lm Ericsson (Publ) Signalisation d'identifiant global de cellule dans un système de communication sans fil
KR20200085986A (ko) * 2019-01-07 2020-07-16 주식회사 케이티 셀 선택 제어 방법 및 장치

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