EP4635241A1 - Procédés et dispositifs de radiomessagerie à faible consommation d'énergie dans un système sans fil à faisceaux multiples - Google Patents

Procédés et dispositifs de radiomessagerie à faible consommation d'énergie dans un système sans fil à faisceaux multiples

Info

Publication number
EP4635241A1
EP4635241A1 EP23817974.1A EP23817974A EP4635241A1 EP 4635241 A1 EP4635241 A1 EP 4635241A1 EP 23817974 A EP23817974 A EP 23817974A EP 4635241 A1 EP4635241 A1 EP 4635241A1
Authority
EP
European Patent Office
Prior art keywords
user equipment
beams
inactive
network node
configuration parameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23817974.1A
Other languages
German (de)
English (en)
Inventor
Rikin SHAH
David GONZALEZ GONZALEZ
Reuben GEORGE STEPHEN
Andreas Andrae
Hojin Kim
Osvaldo Gonsa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aumovio Germany GmbH
Original Assignee
Continental Automotive Technologies GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive Technologies GmbH filed Critical Continental Automotive Technologies GmbH
Publication of EP4635241A1 publication Critical patent/EP4635241A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/04—User notification, e.g. alerting and paging, for incoming communication, change of service or the like multi-step notification using statistical or historical mobility data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure generally relates to wireless communication and more particularly to a method for optimizing power consumption when paging a user equipment in inactive or idle state.
  • Wireless communication systems like LTE or 5G New Radio (NR) provide support for various types of communication, such as voice, video, packet data, messaging, broadcast, and so on.
  • Such a communication system typically includes a number of base stations (BS) providing user equipment (UE) with wireless access to a core communication network.
  • BS base stations
  • UE user equipment
  • 5G NR makes use of the millimeters waves spectrum to offer very high bandwidth. However, these high frequencies are subject to increased pathloss, channel intermittency, and may be blocked by many common materials, even user’s body, what may lead to rapid drops in signal strength. To mitigate these impairments, 5G NR makes use of highly directional transmission links what requires beamforming techniques to align the transmitter and receiver beams.
  • a user equipment may switch to an inactive or idle state when it does not have any ongoing data transmission. If new data arrives for the user equipment, a base station may probe the user equipment by sending a paging message.
  • gNB is not aware of the user equipment’s localization when it is in inactive or idle state, a paging message is transmitted over all beams of each cell in a RAN based notification area. However, repeating the same paging message in all transmitted beams increases signaling overhead and waste of radio resource of gNB which contribute to unnecessary energy consumption. There is therefore a need for a method for paging a user equipment in inactive or idle state with a reduced power consumption.
  • a method of wireless communication by a network node for transmitting a paging notification to a user equipment in inactive or idle state comprises:
  • a configuration parameter including at least one preferred beam for receiving a transmission
  • the paging request is thus transmitted on a subset of beams selected by the base station according to beam preferences provided by the user equipment before it enters inactive or idle state. Because the paging message is transmitted only on a subset of beams, the power consumption is reduced.
  • the received configuration parameter further comprise a cell preference and the subset of beams is further determined based on said preferred cell.
  • the paging message is thus transmitted only within cells that are indicated as preferred cells by the user equipment. This way, power may be saved by avoiding useless transmission.
  • said configuration parameter is received in an Assistance Information message.
  • the user equipment transmits indications regarding beams and cells preferences in a UEAssistancelnformation message.
  • UEAssistanceMessage may be sent by UE to provide preferences, for example in response to a RRCReconfiguration request.
  • the disclosure relates to an apparatus for transmitting a paging notification to a user equipment in inactive or idle state in a wireless network, said apparatus comprising a processor coupled with a memory in which computer program instructions are stored, said processor being configured by said instructions to perform step of:
  • a configuration parameter including at least one preferred beam for receiving a transmission
  • the present disclosure also contemplates a network node (e.g., a base station) comprising such an apparatus.
  • a network node e.g., a base station
  • Another aspect of the disclosure relates to a method of wireless communication by a user equipment device for receiving a paging notification from a network node while in inactive or idle state, the method comprising:
  • a UE may thus indicate its one or more preferred beams to a network node (e.g., a base station) before entering inactive/idle state. Whenever a base station is willing to send a paging notification, said notification may be sent only over said preferred beams to avoid useless transmission. Thanks to UE determining its preferred beams according to at least its current location, it may still receive a paging notification event if said notification is sent over a limited subset of beams. UE may thus help a network node to save power.
  • a network node e.g., a base station
  • the method further comprises a step of determining a mobility status of said user equipment, said configuration parameter comprising:
  • the number of preferred beams indicated in the configuration parameter thus depends on a mobility status of the UE.
  • a limited number of beams may be indicated to the network node when the UE is determined stationary because beams configuration may not change, whereas a larger number of beams may be signaled as preferred when the UE is determined non-stationary or semi-stationary to cover potential new locations of the UE.
  • said configuration parameter further includes a cell preference, said received paging request being transmitted by a network node in a preferred cell.
  • the method avoids transmitting paging notifications in cells where the target UE is not located. Power consumption is thus reduced.
  • said configuration parameter is transmitted in an Assistance Information message.
  • said step of determining at least one preferred beam further comprise:
  • a user equipment may determine its future location based on its current location and/or an history of its former location. Based on the determined future location, the user equipment may determine one or more beams and/or one or more cells that would match said future location. Knowing these one or more determined beams allows a network node to later transmit a paging message to the user equipment in inactive or idle state using only a subset of beams that best matches user equipment location.
  • Another aspect of the disclosure contemplates an apparatus for receiving a wireless paging notification from a network node while in inactive or idle state, said apparatus comprising a processor coupled with a memory in which computer program instructions are stored, said processor being configured by said instructions to perform step of:
  • a user equipment comprising an apparatus for receiving a wireless paging notification as described hereinabove.
  • the present disclosure further relates to a wireless communication system for transmitting a paging notification to a user equipment, said system comprising a network node for receiving a paging notification and a user equipment for receiving said paging notification as described above.
  • steps of the method for transmitting a paging notification to a user equipment and of the method for receiving said paging notification described hereinabove are determined by computer program instructions.
  • an embodiment of the present disclosure relates to a computer program stored on an information medium, said program being suitable to be implemented in user equipment device or more generally in a computer, said program comprising instructions configured to implement steps of the methods for receiving a paging notification and/or the method for transmitting a paging notification which have just been described.
  • the program can use any programming language, and be in the form of source code, object code, or of code intermediate between source code and object code, such as in a partially compiled form, or in any other desirable form.
  • a further aspect contemplates a computer-readable information medium comprising computer program instructions for implementing steps of the methods mentioned hereinabove.
  • the information medium may be any entity or device capable of storing the program.
  • the medium can comprise a storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, FLASH memory or any magnetic recording means, for example a hard drive.
  • the information medium may be a transmissible medium such as an electrical or optical signal, which may be conveyed via an electrical or optical cable, by radio or by other means.
  • the information medium may be an integrated circuit into which the program is incorporated, the circuit being adapted to execute or to be used in the execution of the methods in question.
  • FIG. 1 is a schematic diagram of a wireless communication system in which aspects of the method disclosed herein may be practiced, according to an embodiment
  • FIG. 2 is a combined flow chart illustrating steps of the methods disclosed herein and messages exchanged, according to an embodiment of the present disclosure
  • FIG. 3 is a block diagram showing an architecture of an apparatus suitable to implement a method for transmitting a paging notification to a user equipment according to an embodiment
  • FIG. 4 is a block diagram showing an architecture of an apparatus suitable to implement a method for receiving a paging notification from a network node according to an embodiment.
  • FIG. 1 shows an exemplary 5G New Radio (NR) wireless communication system 100 comprising a user equipment 101 and a base station 102 in which aspects of the present disclosure may be practiced.
  • the wireless network 100 may be an LTE network or some other wireless network, such as 5G NR network.
  • the wireless network 100 may include one or more base stations 102.
  • the base station 102 may be referred as BS, NB, eNodeB (or eNB), gNodeB (or gNB), an access point or the like, depending on the wireless standard implemented.
  • Base station 102 provide radio communication coverage for a cell 103.
  • User equipment 101 may communicate with base station 102 through radio signals to access a core communication network (not shown).
  • the base station 102 may communicate with user equipment 101 using downlink (DL) and uplink (UL) radio channels.
  • DL downlink
  • UL uplink
  • User equipment 101 may be referred as a mobile station, a wireless terminal, or the like.
  • user equipment 101 may be a cellular phone, a wireless modem, a wireless communication device, a handheld device, a laptop computer or the like.
  • User equipment 101 may also be an loT (internet of things) device, like wireless camera, a smart sensor or smart meter, a vehicle, a global positioning system device, or any other device configured to communicate through a wireless network.
  • loT internet of things
  • the base station 102 may implement beamforming techniques to target a specific user equipment like UE 101 . This is illustrated on FIG. 1 with a first set of beams 104 and a second set of beams 105. Based on feedbacks received from US 101 , the base station 102 may select one or more beams directed toward UE 101 for downlink communication. For example, the base station 102 may send downlink data to UE 101 using beam 104a. Beam 104a may be selected based on radio signal characteristics reported by UE 101.
  • UE 101 may enter an inactive or idle state to save power.
  • base station 102 may broadcast a paging message. Because the location of the UE 101 is unknown, the paging message needs to be transmitted on all beams within all cells of the RAN (Radio Access Network) notification area (RNA).
  • RAN Radio Access Network
  • the RAN Notification Area comprises one or more cells belonging to one or more base stations. If the last serving 5G BS receives downlink data destinated to a UE, it sends the paging messages to every cell in the RNA. The paging message can also be sent to neighboring base stations belonging to the RNA, through the Xn interface.
  • the present disclosure contemplates a selective transmission of the paging message according to which the paging message is transmitted on a subset of cells and/or beams based on cell/beam preferences signaled by the UE before it enters inactive or idle state.
  • a user equipment may determine one or more preferred beams and or preferred cell.
  • the beam preference may be determined by the user equipment according to a mobility status indicating whether the user equipment is stationary, semi-stationary or non-stationary.
  • the user equipment may determine a first number of preferred beams when said mobility status indicates a stationary user equipment, and a second number of preferred beams when said mobility status indicates a non-stationary user equipment, the second number of beams being greater than the first number of beams.
  • the number of preferred beams for a specific mobility status is configured by a network node beforehand through a configuration message, for example a RRCReconfiguration request.
  • a base station may send a configuration message to instruct a UE to report a first number of preferred beams and/or cells when UE is stationary, a second number of preferred beams and/or cells when UE is semi-stationary, and a third number of preferred beams and/or cells when UE is non-stationary.
  • the user equipment may determine beam preference according to its future location.
  • the future location of the user equipment may be determined based on its current location or an history of previous locations, a velocity and/or a moving direction.
  • the user equipment may periodically update its beam/cell preference.
  • the user equipment may report its beam/cell preferences to a base station in a message 202.
  • the user equipment reports beam/cell preferences by sending a configuration parameter to a base station in said message 202, said configuration parameter including at least said one or more preferred beam determined at step 200.
  • the message 202 is a UEAssistancelnformation message.
  • UE Assistance Information is a special RRC message defined in 3GPP specification TS 38.331 by which a user equipment can inform various internal status to the network.
  • the network may thus adjust resources allocated to said user equipment to better fit its needs.
  • a user equipment may send UEAssistancelnformation message in response to a RRCReconfiguration message or whenever it wants.
  • the base station 102 receives the message 202 comprising beam/cell preferences at step 203 and stores the preferences in a context associated with the user equipment.
  • the user equipment may enter a RRC Inactive or RRC Idle state at step 204.
  • the user equipment may be instructed by the base station to enter Inactive or Idle state through a RRC Release with SuspendConfig message. While in RRC Inactive or Idle state continue to monitor the paging channel.
  • the base station is aware of the user equipment having entered inactive state, either because user equipment has entered inactive state on request from the base station, or because user equipment has reported its state change through signaling.
  • the base station may receive data for transmission to the user equipment. If the base station determines that the user equipment is in Inactive or Idle state, the base station may retrieve beams and/or cell preference received from the user equipment during step 203.
  • the base station prepares and sends a paging notification 207 to the user equipment using beams/cells preference associated with the user equipment.
  • the paging notification is transmitted only on a subset of beams and/or a subset of cells reported as preferred by the user equipment.
  • the user equipment receives said paging message 207 while in inactive or idle state.
  • the user equipment may then establish a downlink connection in order to receive incoming data.
  • FIG.3 shows a schematic architecture of an apparatus 300 suitable to implement a method for transmitting a paging notification, according to an embodiment.
  • the computer program instructions 303 may be loaded into the memory 302 before being executed by the processor 301.
  • the processor 301 implements the steps of the method according to the instructions of the computer program 303.
  • the apparatus 400 may also comprise a beam determination unit 305 configured to determine one or more beams or cells suitable for transmitting data to a specific user equipment while the user equipment is in inactive or idle state.
  • the beam determination unit may retrieve beam and/or cell preferences received in a UEAssistance Information message received from a user equipment by the communication module 304, and to store the received beam/cells preferences in a database in association with an identifier of the user equipment.
  • the beam determination unit may be implemented by computer program instructions configured to determine a set of preferred beams and/or cells that could be used to send a paging notification to the user equipment when said user equipment is in inactive or idle state.
  • the communication module 304 is further configured to transmit a paging notification to a user equipment in active or idle state when downlink data is available for transmission to said user equipment, said paging notification being transmitter using a subset of beams and/or cells determined by the beam determination unit 305.
  • the apparatus 300 is included in a network node, for example a LTE or 5G NR base station.
  • FIG.4 shows a schematic architecture of an apparatus 400 suitable to implement a method for receiving a paging notification, according to an embodiment.
  • the apparatus 400 comprises a processor 401 and a memory 402, for example a Random Access Memory (RAM).
  • the processor 401 may be controlled by a computer program 403 stored in the memory 402 comprising instructions configured to implement a method for receiving a paging notification, according to an embodiment.
  • the computer program 403 comprises instructions configured to implement steps of determining one or more preferred beam based at least on user equipment location, transmitting a configuration parameter to said network node before entering idle or inactive state, said configuration parameter including at least said one or more preferred beam, and receiving a paging request while in inactive or idle state from said network node, said paging request being transmitted by said network node on a subset of beams comprising said one or more preferred beam.
  • the computer program instructions 403 may be loaded into the memory 402 before being executed by the processor 401.
  • the processor 401 implements the steps of the method according to the instructions of the computer program 403.
  • the apparatus 400 comprises a wireless communication unit 404 configured to exchange data using radio signals.
  • the communication unit 304 may be a 3G, 4G, 5G, NR, WiFi or Wimax transceiver suitable for establishing connections and exchange data with one or more user equipment of a wireless network, for example, with a base station.
  • the apparatus 400 also comprise a beam determination module 405 configured to determine one or more beams or cells suitable for receiving data from a network node while in inactive or idle state.
  • the beam determination module is implemented by computer program instructions configured to determine a mobility status of the apparatus 400, and to determine a set of preferred beams and/or cells that could be used by a network node to send a paging notification while the apparatus is in idle or inactive state.
  • the communication unit 404 may be configured by computer program instructions to receive a configuration message from a network node, said message comprising a number of preferred beams or cells that the apparatus may report to the network node depending on its mobility status.
  • said configuration parameter may comprise a first number of beams when said mobility status indicates a stationary user equipment, and a second number of beams when said mobility status indicates a non-stationary user equipment, the second number of beams being greater than the first number of beams.
  • the apparatus 400 comprises a power saving unit 406 configured to switch from a connected mode to an inactive or idle state when no data transfer is expected.
  • the power saving module may be implemented by computer program instructions configured to determine that no downlink data is expected from a network node, (e.g., a command for switching to inactive state may be send by the network node) and/or no uplink data is expected to be sent and to release some radio resources if applicable.
  • the communication unit 404 is further configured for receiving a paging message from a network node after the power saving unit 406 has switched to inactive or idle state, said paging request being transmitted by said network node on a subset of beams comprising said one or more preferred beam.
  • the apparatus is included in a user equipment device, for example in 5G NR compatible smartphone, tablet, connected vehicle, computer or any connected device.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La divulgation porte sur un procédé, un appareil et un nœud de réseau pour recevoir (203) un ou plusieurs faisceaux ou cellules préférés à partir d'un équipement utilisateur et transmettre (206) une notification de radiomessagerie audit équipement utilisateur dans un état inactif ou inactif à l'aide desdits faisceaux ou cellules préférés. La divulgation porte également sur un procédé, un appareil et un équipement utilisateur pour transmettre (201) un sous-ensemble de faisceaux ou de cellules préférés dans un message (202) à un nœud de réseau et recevoir (208) un message de radiomessagerie (207) à partir d'un nœud de réseau pendant un état inactif ou inactif.
EP23817974.1A 2022-12-14 2023-12-01 Procédés et dispositifs de radiomessagerie à faible consommation d'énergie dans un système sans fil à faisceaux multiples Pending EP4635241A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022213670.5A DE102022213670A1 (de) 2022-12-14 2022-12-14 Verfahren und Vorrichtungen für energieeffizientes Paging in einem Mehrstrahl-Drahtlossystem
PCT/EP2023/083863 WO2024126084A1 (fr) 2022-12-14 2023-12-01 Procédés et dispositifs de radiomessagerie à faible consommation d'énergie dans un système sans fil à faisceaux multiples

Publications (1)

Publication Number Publication Date
EP4635241A1 true EP4635241A1 (fr) 2025-10-22

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ID=89119303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23817974.1A Pending EP4635241A1 (fr) 2022-12-14 2023-12-01 Procédés et dispositifs de radiomessagerie à faible consommation d'énergie dans un système sans fil à faisceaux multiples

Country Status (4)

Country Link
EP (1) EP4635241A1 (fr)
CN (1) CN120345319A (fr)
DE (1) DE102022213670A1 (fr)
WO (1) WO2024126084A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170141609A (ko) 2016-06-15 2017-12-26 삼성전자주식회사 무선 통신 시스템에서 빔포밍을 이용한 페이징 방법 및 장치
WO2021002863A1 (fr) 2019-07-03 2021-01-07 Nokia Solutions And Networks Oy Radiomessagerie utilisant des paramètres de faisceau pour opération à base de faisceau
EP4074090A1 (fr) 2019-12-10 2022-10-19 Telefonaktiebolaget LM Ericsson (publ) Radiomessagerie d'un équipement utilisateur par un noeud de réseau
US11653329B2 (en) 2020-07-16 2023-05-16 Qualcomm Incorporated Beam-specific page monitoring
US11419093B2 (en) 2020-10-15 2022-08-16 PanPsy Technologies, LLC Wireless device and wireless network processes for paging enhancement

Also Published As

Publication number Publication date
WO2024126084A1 (fr) 2024-06-20
CN120345319A (zh) 2025-07-18
DE102022213670A1 (de) 2024-06-20

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