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WO2024245564A1 - Commande de mobilité en mode veille (resélection de cellule) pendant un mode d'économie d'énergie de réseau mis en œuvre sur une base de cellule - Google Patents

Commande de mobilité en mode veille (resélection de cellule) pendant un mode d'économie d'énergie de réseau mis en œuvre sur une base de cellule Download PDF

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Publication number
WO2024245564A1
WO2024245564A1 PCT/EP2023/064747 EP2023064747W WO2024245564A1 WO 2024245564 A1 WO2024245564 A1 WO 2024245564A1 EP 2023064747 W EP2023064747 W EP 2023064747W WO 2024245564 A1 WO2024245564 A1 WO 2024245564A1
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WO
WIPO (PCT)
Prior art keywords
network
cell reselection
energy
saving mode
cell
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
PCT/EP2023/064747
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English (en)
Inventor
Mads LAURIDSEN
Daniela Laselva
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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/EP2023/064747 priority Critical patent/WO2024245564A1/fr
Publication of WO2024245564A1 publication Critical patent/WO2024245564A1/fr
Anticipated expiration legal-status Critical
Pending 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
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
    • H04W52/028—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof switching on or off only a part of the equipment circuit blocks
    • 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
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
    • H04W16/08—Load shedding arrangements
    • 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
    • H04W68/025—Indirect paging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • 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

  • Various example embodiments generally relate to a wireless communication technique. More specifically, measures/mechanisms (including methods, apparatuses, and computer program products) are described for controlling cell reselection during a network energy saving in a network.
  • Various example embodiments relate to considerations in a (e.g., mobile/wireless) communication system or network, such as a 5G/NR system and a next-generation system beyond 5G.
  • a (e.g., mobile/wireless) communication system or network such as a 5G/NR system and a next-generation system beyond 5G.
  • various example embodiments are applicable in a 3 GPP-standardized mobile/wireless communication system or network of Release 18 onwards.
  • a method performed by a terminal node comprises: receiving, from a network (e.g., a network node such as a basis station), a cell reselection configuration related to an energy-saving mode in the network (e.g., an energy-saving mode of a cell), and responsive to the network indicating the energysaving mode, performing cell reselection according to the cell reselection configuration.
  • a network e.g., a network node such as a basis station
  • a cell reselection configuration related to an energy-saving mode in the network e.g., an energy-saving mode of a cell
  • the method may further comprise receiving, from the network, an indication indicating the energy-saving mode in the network.
  • the indication may be implicit or explicit.
  • the indication may also indicate when the energy-saving mode is to be entered.
  • receiving the indication may comprise one of: receiving a message (e.g., a short message) of a paging downlink control information (DCI), the message comprising one or more bits indicating the energy-saving mode in the network; or receiving a system information broadcast (SIB), the system information broadcast comprising one or more bits indicating the energy-saving mode in the network.
  • a message e.g., a short message
  • SIB system information broadcast
  • receiving the indication may comprise defining a time when the energy-saving mode is to be entered.
  • the time when the energysaving mode is to be entered is defined based on one of: a system information (SI) modification period; a timer included in the cell reselection configuration; an offset to an absolute time of the network, a time offset before the time when the energy-saving mode is to be entered; an indication of an absolute time.
  • SI system information
  • the cell reselection according to the cell reselection configuration may be performed based on the indication.
  • the cell reselection configuration related to the energysaving mode may differ from a cell reselection configuration used in a mode in the network other than the energy-saving mode (i.e., a primary cell reselection configuration such as a legacy cell reselection configuration).
  • the cell reselection configuration related to the energysaving mode may comprise at least one of a priority configuration or a threshold configuration, the priority configuration and the threshold configuration being related to one or more of intrafrequency, inter-frequency, and inter-radio access technology (RAT) mobility.
  • the priority configuration may include one or more of an absolute priority, a relative priority relative to a priority of a cell reselection configuration used in a mode in the network other than the energy-saving mode (e.g., the legacy cell reselection configuration) or a priority currently used, and an offset relative to a cell reselection configuration used in a mode in the network other than the energy-saving mode (e.g., the legacy cell reselection configuration).
  • the threshold configuration may include one or more radio power/quality thresholds for the cell reselection.
  • the one or more radio power/quality thresholds may comprise one or more absolute radio power/quality thresholds and/or one or more relative radio power/quality thresholds relative to a cell reselection configuration used in a mode other than the energy-saving mode.
  • performing the cell reselection may comprise one or more of: performing a cell reselection procedure according to the priority configuration; and performing the cell reselection procedure according to the threshold configuration.
  • the cell reselection procedure comprises a measurement process and/or an evaluation process.
  • the energy-saving mode may comprise one or more of a cell shutdown, a cell deactivation, a cell sleep, a cell discontinuous reception (DRX), and a cell discontinuous transmission (DTX).
  • the terminal node may comprise a User Equipment (UE).
  • UE User Equipment
  • a terminal node e.g., a user device or User Equipment (UE)
  • the terminal node or apparatus according to the second aspect comprises at least one processor and at least one memory including computer program code.
  • the computer program code causes the terminal node or apparatus, when executed with the at least one processor, to: receive, from a network, a cell reselection configuration related to an energy-saving mode in the network; and responsive to the network indicating the energy-saving mode, perform cell reselection according to the cell reselection configuration.
  • the computer program code may further cause the terminal node or apparatus, when executed with the at least one processor, to receive, from the network, an indication indicating the energy-saving mode in the network.
  • the computer program code to receive the indication may further cause the terminal node or apparatus, when executed with the at least one processor, to: receive a message of a paging downlink control information (DCI), the message comprising one or more bits indicating the energy-saving mode in the network; or receive a system information broadcast (SIB), the system information broadcast comprising one or more bits indicating the energy-saving mode in the network.
  • DCI paging downlink control information
  • SIB system information broadcast
  • the computer program code to receive the indication may further cause the terminal node or apparatus, when executed with the at least one processor, to define a time when the energy-saving mode is to be entered.
  • the time when the energy-saving mode is to be entered may be defined based on one of: a system information (SI) modification period; a timer included in the cell reselection configuration; an offset to an absolute time of the network; a time offset before the time when the energy-saving mode is to be entered; an indication of an absolute time.
  • SI system information
  • the cell reselection according to the cell reselection configuration may be performed based on the indication.
  • the cell reselection configuration related to the energysaving mode may differ from a cell reselection configuration used in a mode of the network other than the energy-saving mode.
  • the cell reselection configuration related to the energysaving mode may comprise at least one of a priority configuration or a threshold configuration, the priority configuration and the threshold configuration being related to one or more of intrafrequency, inter-frequency, and inter-radio access technology (RAT) mobility.
  • the priority configuration may include one or more of an absolute priority, a relative priority relative to a priority of a cell reselection configuration used in a mode in the network other than the energy-saving mode (e.g., the legacy cell reselection configuration) or a priority currently used, and an offset relative a cell reselection configuration used in a mode of the network other than the energy-saving mode.
  • the threshold configuration may include one or more radio power/quality thresholds for the cell reselection.
  • the one or more radio power/quality thresholds may comprise one or more absolute radio power/quality thresholds and/or one or more relative radio power/quality thresholds relative to a cell reselection configuration used in a mode other than the energy-saving mode.
  • the computer program code to perform the cell reselection may further cause the terminal node or apparatus, when executed with the at least one processor, to: perform a cell reselection procedure according to the priority configuration; and/or perform the cell reselection procedure according to the threshold configuration.
  • the cell reselection procedure comprises a measurement process and/or an evaluation process.
  • the energy-saving mode may comprise one or more of a cell shutdown, a cell deactivation, a cell sleep, a cell discontinuous reception (DRX), and a cell discontinuous transmission (DTX).
  • a terminal node e.g., a user device or User Equipment (UE)
  • the terminal node or apparatus according to the third aspect comprises: means or modules for receiving, from a network, a cell reselection configuration related to an energy-saving mode in the network (i.e., a receiver), and means or modules for performing cell reselection according to the cell reselection configuration responsive to the network indicating the energy-saving mode (i.e., cell reselector).
  • the terminal node or apparatus further comprises means or modules for performing one or more of the examples according to the first aspect.
  • a terminal node e.g., a user device or User Equipment (UE)
  • the terminal node or apparatus according to the fourth aspect comprises: circuitry to receive, from a network, a cell reselection configuration related to an energy-saving mode in the network; and circuitry to perform cell reselection according to the cell reselection configuration responsive to the network indicating the energy-saving mode.
  • UE User Equipment
  • the terminal node or apparatus further comprises circuitry to perform one or more of the examples according to the first aspect.
  • a method performed by a network comprises: transmitting, to a terminal node, a cell reselection configuration related to an energy-saving mode in the network (e.g., an energy-saving mode of a cell); and indicating, to the terminal node, to perform cell reselection according to the cell reselection configuration.
  • the method may further comprise transmitting, to the terminal node, an indication indicating the energy-saving mode in the network.
  • the indication may be implicit or explicit.
  • the indication may also indicate when the energy-saving mode is to be entered.
  • transmitting the may indication comprise one of: transmitting a message (e.g., a short message) of a paging downlink control information (DCI), the message comprising one or more bits indicating the energy-saving mode in the network; or transmitting a system information broadcast (SIB), the system information broadcast comprising one or more bits indicating the energy-saving mode in the network.
  • transmitting the indication may comprise defining a time when the energy-saving mode is to be entered.
  • the time when the energysaving mode is to be entered is defined based on one of: a system information (SI) modification period; a timer included in the cell reselection configuration; an offset to an absolute time of the network; a time offset before the time when the energy-saving mode is to be entered; an indication of an absolute time.
  • SI system information
  • the cell reselection configuration related to the energysaving mode may comprise at least one of a priority configuration or a threshold configuration, the priority configuration and the threshold configuration being related to one or more of intrafrequency, inter-frequency, and inter-radio access technology (RAT) mobility.
  • the priority configuration may include one or more of an absolute priority, a relative priority relative to a priority of a cell reselection configuration used in a mode in the network other than the energy-saving mode (e.g., the legacy cell reselection configuration) or a priority currently used, and an offset relative a cell reselection configuration used in a mode of the network other than the energy-saving mode.
  • the threshold configuration may include one or more radio power/quality thresholds for the cell reselection.
  • the one or more radio power/quality thresholds may comprise one or more absolute radio power/quality thresholds and/or one or more relative radio power/quality thresholds relative to a cell reselection configuration used in a mode other than the energy-saving mode.
  • the energy-saving mode may comprise one or more of a cell shutdown, a cell deactivation, a cell sleep, a cell discontinuous reception (DRX), and a cell discontinuous transmission (DTX).
  • the network node comprises a Base Station (BS).
  • BS Base Station
  • the computer program code to indicate to perform the cell reselection may further cause the network node or apparatus, when executed with the at least one processor, to transmit, to the terminal node, an indication indicating the energy-saving mode in the network.
  • the computer program code to transmit the indication may further cause the network node or apparatus, when executed with the at least one processor, to: transmit a message of a paging downlink control information (DCI), the message comprising one or more bits indicating the energy-saving mode in the network; or transmit a system information broadcast (SIB), the system information broadcast comprising one or more bits indicating the energy-saving mode in the network.
  • DCI paging downlink control information
  • SIB system information broadcast
  • the computer program code to transmit the indication may further cause the network node or apparatus, when executed with the at least one processor, to define a time when the energy-saving mode is to be entered.
  • the time when the energy-saving mode is to be entered may be defined based on: a system information (SI) modification period; a timer included in the cell reselection configuration; an offset to an absolute time of the network; a time offset before the time when the energy-saving mode is to be entered; an indication of an absolute time.
  • SI system information
  • the cell reselection configuration related to the energysaving mode may comprise at least one of a priority configuration or a threshold configuration, the priority configuration and the threshold configuration being related to one or more of intrafrequency, inter-frequency, and inter-radio access technology (RAT) mobility.
  • the priority configuration may include one or more of an absolute priority, a relative priority relative to a priority of a cell reselection configuration used in a mode in the network other than the energy-saving mode (e.g., the legacy cell reselection configuration) or a priority currently used, and an offset relative a cell reselection configuration used in a mode of the network other than the energy-saving mode.
  • the threshold configuration may include one or more radio power/quality thresholds for the cell reselection.
  • the one or more radio power/quality thresholds may comprise one or more absolute radio power/quality thresholds and/or one or more relative radio power/quality thresholds relative to a cell reselection configuration used in a mode other than the energy-saving mode.
  • the energy-saving mode may comprise one or more of a cell shutdown, a cell deactivation, a cell sleep, a cell discontinuous reception (DRX), and a cell discontinuous transmission (DTX).
  • the network node or apparatus further comprises means or modules for performing one or more of the examples according to the fifth aspect.
  • a network node e.g., a Base station (BS)
  • the network node or apparatus according to the eighth aspect comprises: circuitry to transmit, to a terminal node, a cell reselection configuration related to an energy-saving mode in a network; and circuitry to indicate, to the terminal node, to perform cell reselection according to the cell reselection configuration.
  • BS Base station
  • the network node or apparatus further comprises circuitry to perform one or more of the examples according to the fifth aspect.
  • a computer program product comprises program instructions stored on a computer readable medium to execute steps according to any one of the examples of the methods according to the first and fifth aspect as outlined above when said program is executed on a computer.
  • FIG. 1 shows a schematic diagram of an example (mobile/wireless) communication system or network
  • FIG. 2 shows a schematic diagram of an example wireless device or entity
  • FIG. 3 shows a schematic diagram of an example network node or entity
  • FIG. 4 illustrates a scenario where a cell is shut down and a UE moves to a cell, using the same frequency on a different base station
  • FIG. 5 illustrates a flowchart of a method or process, to be performed by a terminal node, for cell reselection during a network energy saving in a network according to some embodiments
  • FIG. 6 illustrates a flowchart of a method or process, to be performed by a network node, for cell reselection during a network energy saving in a network according to some embodiments
  • FIG. 7 illustrates an exemplary message sequence diagram of the methods or processes for cell reselection during a network energy saving in a network according to some embodiments.
  • FIGS. 8 A and 8B illustrate schematic block diagrams showing structures of apparatuses according to some embodiments. DETAILED DESCRIPTION
  • references in the specification to "one embodiment,” “an embodiment,” “an example embodiment,” etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include 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 implement such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • various example embodiments are applicable in any (e.g., mobile/wireless) communication system, such as a 5G/NR system and a next-generation system beyond 5G.
  • various example embodiments are applicable in a 3 GPP-standardized mobile/wireless communication system of Release 18 onwards.
  • the words “comprising” and “including” should be understood as not limiting the example embodiments to consist of only those features that have been mentioned, and example embodiments may also contain, among other things, e.g., features, structures, units, modules, or the like, that have not been specifically mentioned.
  • any operations of sending or receiving may comprise actual transmission or communication operations, i.e., transmitting or communicating associated messages or signals, but may additionally or alternatively comprise related processing operations, i.e., preparing/generating/issuing associated messages or signals before sending and/or obtaining/handling/processing of associated messages or signals after receiving.
  • sending a message at/by an entity may comprise generating/issuing and/or transmitting/communicating thereof or a corresponding signal in/at/by the entity
  • receiving a message at/by an entity may comprise obtaining/handling and/or processing thereof or a corresponding signal in/at/by the entity.
  • a message may refer to and/or encompass any kind of corresponding information, signal, or the like.
  • FIG. 1 illustrates an example of a (mobile/wireless) communication system or network 100 that may be used for wireless communications.
  • Communication system or network 100 includes wireless devices or entities, such as UEs 110 (e.g., 110A-110C), and network nodes or entities, such as radio access nodes 120 (e.g., 120A-120B) (e.g., eNBs, gNBs, etc.), connected to one or more network nodes or entities 130 via an interconnecting network 125.
  • UEs 110 within coverage area 115 may each be capable of communicating directly with radio access nodes 120 over a wireless interface.
  • UE 110A may communicate with radio access node 120A over a wireless interface. That is, UE 110A may transmit wireless signals to and/or receive wireless signals from radio access node 120A.
  • the wireless signals may contain voice traffic, data traffic, control signals, and/or any other suitable information.
  • UE user equipment
  • UE user equipment
  • Examples of UE are target device, D2D UE, machine type UE or UE capable of machine-to-machine (M2M) communication, personal digital assistant, tablet, mobile terminal, smartphone, laptop embedded equipped (LEE), laptop mounted equipment (LME), USB dongles, ProSe UE, vehicle-to-vehicle (V2V) UE, V2X UE, MTC UE, eMTC UE, FeMTC UE, UE Cat 0, UE Cat Ml, narrow band loT (NB-IoT) UE, UE Cat NB1, etc.
  • Example embodiments of a UE are described in more detail below with respect to FIG. 2.
  • an area of wireless signal coverage 115 associated with a radio access node 120 may be referred to as a cell.
  • a cell an area of wireless signal coverage 115 associated with a radio access node 120
  • 5G fifth generation
  • NR New Radio
  • the radio access node 120 may transmit a beamformed signal to the UE 110 in one or more transmit directions (transmission beam, Tx beam).
  • the UE 110 may receive the beamformed signal from the base station 120 in one or more receive directions (reception beam, Rx beam).
  • the UE 110 may also transmit a beamformed signal to the base station 120 in one or more directions and the base station 120 may receive the beamformed signal from the UE 110 in one or more directions.
  • the base station 120 and the UE 110 may determine the best receive and transmit directions, e.g., best in the sense of these directions leading to the highest link quality or fulfilling other quality conditions in the most suitable manner, for each of the base station/UE pairs.
  • the interconnecting network 125 may refer to any interconnecting system capable of transmitting audio, video, signals, data, messages, etc., or any combination of the preceding.
  • the interconnecting network 125 may include all or a portion of a public switched telephone network (PSTN), a public or private data network, a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN), a local, regional, or global communication or computer network such as the Internet, a wireline or wireless network, an enterprise intranet, or any other suitable communication link, including combinations thereof.
  • PSTN public switched telephone network
  • LAN local area network
  • MAN metropolitan area network
  • WAN wide area network
  • Internet a local, regional, or global communication or computer network
  • wireline or wireless network such as the Internet
  • enterprise intranet an enterprise intranet, or any other suitable communication link, including combinations thereof.
  • the network node 130 may be a core network node, managing the establishment of communication sessions and other various other functionalities for UEs 110.
  • Examples of network node 130 may include mobile switching center (MSC), MME, serving gateway (SGW), packet data network gateway (PGW), operation and maintenance (O&M), operations support system (OSS), SON, positioning node (e.g., Enhanced Serving Mobile Location Center, E-SMLC), location server node, MDT node, etc.
  • UEs 110 may exchange certain signals with the network node 130 using the non-access stratum (NAS) layer.
  • NAS non-access stratum
  • signals between UEs 110 and the network node 130 may be transparently passed through the radio access network.
  • radio access nodes 120 may interface with one or more network nodes 130 over an internode interface.
  • network node or entity has the full breadth of its ordinary meaning and may correspond to any type of radio access node (or radio network node) or any network node, which can communicate with a UE and/or with another network node in a cellular or mobile or wireless communication system.
  • Examples of network nodes are NodeB, MeNB, SeNB, a network node may belonging to MCG or SCG, base station (BS), multi-standard radio (MSR) radio access node such as MSR BS, eNodeB, network controller, radio network controller (RNC), base station controller (BSC), relay, donor node controlling relay, base transceiver station (BTS), access point (AP), transmission point, transmission node, RRU, RRH, node in distributed antenna system (DAS), core network node (e.g., MSC, MME, etc.), O&M, OSS, Self-organizing Network (SON), positioning node (e.g., E-SMLC), MDT, test equipment, etc.
  • MSR multi-standard radio
  • radio access node 120 may be a distributed radio access node.
  • the components of the radio access node 120, and their associated functions, may be separated into two main units (or sub-radio network nodes) which may be referred to as the central unit (CU) and the distributed unit (DU).
  • CU central unit
  • DU distributed unit
  • Different distributed radio network node architectures are possible. For instance, in some architectures, a DU may be connected to a CU via dedicated wired or wireless link (e.g., an optical fiber cable) while in other architectures, a DU may be connected a CU via a transport network. Also, how the various functions of the radio access node 120 are separated between the CU(s) and DU(s) may vary depending on the chosen architecture.
  • Exemplary wireless communication systems are architectures standardized by the 3rd Generation Partnership Project (3GPP).
  • 3GPP 3rd Generation Partnership Project
  • LTE long-term evolution
  • UMTS Universal Mobile Telecommunications System
  • RAT Universal Mobile Telecommunications System
  • LTE-A LTE Advanced
  • the LTE (LTE-A) employs a radio mobile architecture known as the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and a core network known as the Evolved Packet Core (EPC).
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • EPC Evolved Packet Core
  • Base stations of such systems are known as evolved or enhanced Node Bs (eNBs) and provide E-UTRAN features such as user plane Packet Data Convergence/Radio Link Control/Medium Access Control/Physical layer protocol (PDCP/RLC/MAC/PHY) and control plane Radio Resource Control (RRC) protocol terminations towards the communication devices.
  • eNBs evolved or enhanced Node Bs
  • RRC Radio Resource Control
  • Other RAT examples comprise those provided by base stations of systems that are based on technologies such as WLAN and/or Worldwide Interoperability for Microwave Access (WiMax).
  • a base station can provide coverage for an entire cell or similar radio service area.
  • Core network elements include Mobility Management Entity (MME), Serving Gateway (S-GW) and Packet Gateway (P-GW).
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • P-GW Packet Gateway
  • Network architecture in NR may be similar to that of LTE-A.
  • Base stations of NR systems may be known as next generation Node Bs (gNBs).
  • Changes to the network architecture may depend on the need to support various radio technologies and finer Quality of Service (QoS) support, and some on-demand requirements for QoS levels to support Quality of Experience (QoE) of user point of view.
  • QoS Quality of Service
  • QoE Quality of Experience
  • network aware services and applications, and service and application aware networks may bring changes to the architecture. Those are related to Information Centric Network (ICN) and User-Centric Content Delivery Network (UC-CDN) approaches.
  • ICN Information Centric Network
  • UC-CDN User-Centric Content Delivery Network
  • NR may use multiple input-multiple output (MIMO) antennas, many more base stations or nodes than the LTE (a so-called small cell concept), including macro sites operating in co-operation with smaller stations and perhaps also employing a variety of radio technologies for better coverage and enhanced data rates.
  • MIMO multiple input-multiple output
  • Future networks may utilize network functions virtualization (NFV) which is a network architecture concept that proposes virtualizing network node functions into "building blocks" or entities that may be operationally connected or linked together to provide services.
  • a virtualized network function may comprise one or more virtual machines running computer program codes using standard or general type servers instead of customized hardware. Cloud computing or data storage may also be utilized.
  • radio communications this may mean node operations to be carried out, at least partly, in a server, host or node operationally coupled to a remote radio head. It is also possible that node operations will be distributed among a plurality of servers, nodes, or hosts. It should also be understood that the distribution of labor between core network operations and base station operations may differ from that of the LTE or even be non-existent.
  • An example 5G core network comprises functional entities.
  • the CN is connected to a UE via the radio access network (RAN).
  • An UPF User Plane Function
  • PSA PDU Session Anchor
  • PSA Packet Control Function
  • the CN may also include an AMF (Access & Mobility Function).
  • all concepts disclosed herein may be applicable to different communication networks, comprising but not limited to LTE, LTE-A, 5G, 5G advanced, 6G, and other future or already implemented networks.
  • FIG. 2 is a schematic diagram of an example wireless device, UE 110, according to certain example embodiments.
  • UE 110 may include one or more of at least one transceiver 210, at least one processor 220, at least one memory 230, and at least one network interface 240.
  • the transceiver 210 facilitates transmitting wireless signals to and receiving wireless signals from radio access node 120 (e.g., via transmitted s) (Tx), receiver(s) (Rx) and antenna(s)).
  • the processor 220 executes instructions to provide some or all of the functionalities described herein as being provided by a wireless device/entity or UE, and the memory 230 stores the instructions executed by the processor 220.
  • the processor 220 and the memory 230 form processing circuitry.
  • the processor 220 may include any suitable combination of hardware to execute instructions and manipulate data to perform some or all the described functions of a wireless device or entity, such as the functions of UE 110 described herein.
  • the processor 220 may include, for example, one or more computers, one or more central processing units (CPUs), one or more microprocessors, one or more application specific integrated circuits (ASICs), one or more field programmable gate arrays (FPGAs) and/or other logic.
  • the memory 230 is generally operable to store instructions, such as a computer program, software, an application including one or more of logic, rules, algorithms, code, tables, etc. and/or other instructions capable of being executed by a processor 220.
  • Examples of memory 230 include computer memory (for example, Random Access Memory (RAM) or Read Only Memory (ROM)), mass storage media (for example, a hard disk), removable storage media (for example, a Compact Disk (CD) or a Digital Video Disk (DVD)), and/or or any other volatile or non-volatile, non- transitory computer-readable and/or computer-executable memory devices that store information, data, and/or instructions that may be used by the processor 220 of UE 110.
  • the memory 230 includes computer program code causing the processor 220 to perform processing according to any corresponding methods described herein.
  • the network interface 240 is communicatively coupled to the processor 220 and may refer to any suitable device operable to receive input for UE 110, send output from UE 110, perform suitable processing of the input or output or both, communicate to other devices, or any combination thereof.
  • the network interface 240 may include appropriate hardware (e.g., port, modem, network interface card, etc.) and software, including protocol conversion and data processing capabilities, to communicate through a network.
  • UE 110 may include additional components beyond those shown in FIG. 2 that may be responsible for providing certain aspects of the wireless device’s functionalities, including any of the functionalities described herein and/or any additional functionalities (including any functionality necessary to support the mechanisms according to the subject disclosure).
  • UE 110 may include input devices and circuits, output devices, and one or more synchronization units or circuits, which may be part of the processor 220.
  • Input devices include mechanisms for entry of data into UE 110.
  • input devices may include input mechanisms, such as a microphone, input elements, a display, etc.
  • Output devices may include mechanisms for outputting data in audio, video and/or hard copy format.
  • output devices may include a speaker, a display, etc.
  • the wireless device UE 110 may comprise a series of modules configured to implement the functionalities of the wireless device described herein.
  • modules may be implemented as combination of hardware and software, for instance, the processor, memory, and transceiver(s) of UE 110 shown in FIG. 2. Certain example embodiments may also include additional modules to support additional and/or optional functionalities.
  • FIG. 3 is a schematic diagram of an example radio access node 120 or network node or entity
  • Radio access node 120 or network node or entity 130 may include one or more of at least one transceiver 310, at least one processor 320, at least one memory 330, and at least one network interface 340.
  • the transceiver 310 facilitates transmitting wireless signals to and receiving wireless signals from wireless devices, such as UE 110 (e.g., via transmitter(s) (Tx), receiver(s) (Rx), and antenna(s)).
  • the processor 320 executes instructions to provide some or all the functionalities described herein as being provided by the radio access node 120 or the network node or entity 130, the memory 330 stores the instructions executed by the processor 320.
  • the processor 320 and the memory 330 form processing circuitry.
  • the network interface 340 can communicate signals to backend network components, such as a gateway, switch, router, Internet, Public Switched Telephone Network (PSTN), core network nodes or radio network controllers, etc.
  • PSTN Public Switched Telephone Network
  • the processor 320 can include any suitable combination of hardware to execute instructions and manipulate data to perform some or all the described functions of the radio access node 120 or the network node or entity 130, such as those described herein.
  • the processor 320 may include, for example, one or more computers, one or more central processing units (CPUs), one or more microprocessors, one or more application specific integrated circuits (ASICs), one or more field programmable gate arrays (FPGAs) and/or other logic.
  • CPUs central processing units
  • ASICs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • the memory 330 is generally operable to store instructions, such as a computer program, software, an application including one or more of logic, rules, algorithms, code, tables, etc. and/or other instructions capable of being executed by a processor 320.
  • Examples of memory 330 include computer memory (for example, Random Access Memory (RAM) or Read Only Memory (ROM)), mass storage media (for example, a hard disk), removable storage media (for example, a Compact Disk (CD) or a Digital Video Disk (DVD)), and/or or any other volatile or non-volatile, non- transitory computer-readable and/or computer-executable memory devices that store information.
  • the memory 330 includes computer program code causing the processor 320 to perform processing according to any corresponding methods described herein.
  • the network interface 340 is communicatively coupled to the processor 320 and may refer to any suitable device operable to receive input for the radio access node 120 or the network node or entity 130, send output from the radio access node 120 or the network node or entity 130, perform suitable processing of the input or output or both, communicate to other devices, or any combination of the preceding.
  • the network interface 340 may include appropriate hardware (e.g., port, modem, network interface card, etc.) and software, including protocol conversion and data processing capabilities, to communicate through a network.
  • radio access node 120 or the network node or entity 130 can include additional components beyond those shown in FIG. 3 that may be responsible for providing certain aspects of the node’s functionalities, including any of the functionalities described herein and/or any additional functionalities (including any functionality necessary to support the solutions described herein).
  • the various different types of radio access nodes or network nodes may include components having the same physical hardware but configured (e.g., via programming) to support different radio access technologies, or may represent partly or entirely different physical components.
  • Processors, interfaces, and memory similar to those described with respect to FIG. 3 may be included in other nodes or entities (such as UE 110, radio access node 120, etc.).
  • Other nodes or entities may optionally include or not include a wireless interface (such as the transceiver described in FIG. 3).
  • the radio access node 120 or the network node or entity 130 may comprise a series of modules configured to implement the functionalities of the radio access node 120 or the network node or entity 130 described herein.
  • modules may be implemented as combination of hardware and software, for instance, the processor, memory, and transceiver(s) of the radio access node 120 or the network node or entity 130 shown in FIG. 3. Certain example embodiments may also include additional modules to support additional and/or optional functionalities.
  • Energy saving features allowing to power off cells and/or frequency layers when operating in low load conditions (e.g., cells or frequency layers on which UEs in RRC Idle and/or RRC Inactive are camping and/or where a limited number of UEs in RRC Connected are served) may cause signaling overhead and time-consuming procedures.
  • powering off cells and/or frequency layers may require reconfiguring the cell reselection parameters including (inter-frequency) priorities or thresholds in system information broadcast (e.g., SIB2-4) messages.
  • SIB2-4 system information broadcast
  • reconfiguring the cell reselection parameters is a time-consuming procedure because all UEs need to be notified about the change in the SIB(s) messages and then the UEs need to acquire the updated SIB(s).
  • the procedure for changing the SIB(s) is based on the UEs receiving an indication related to the change in a short message carried in a paging downlink control information (DCI) in a first modification period after which the system information (SI) change will take place in the next modification period.
  • the modification periods are defined to be a multiple (i.e., 2, 4, 8, 16) of the default paging cycle, where the default paging cycle is 32-256 radio frames (i.e., 320 ms to 2.56 s) as per DownlinkConfigCommonSIB of the SIB1.
  • the modification period may be several seconds causing a significant delay for updating the cell reselection parameters at the UEs.
  • the short messages are defined in 3GPP specifications:
  • the system information change indication provided to the UEs does not define which SIB(s) have changed.
  • the UEs are forced to receive and decode all broadcasted SIB(s).
  • FIG. 4 illustrates a network having two base stations BS #A 410 and BS #B 420, each serving cells.
  • the cells served by BS #A 410 use a first frequency layer Fl 412 and a second frequency layer F2 414.
  • the BS #B 420 serves cells using a first frequency layer Fl 422 and a second frequency layer F2 424.
  • the frequency layer Fl 412 of BS #A 410 is the same as the frequency layer Fl 422 of BS #B 420.
  • the frequency layer F2 414 is the same as the frequency layer F2 424.
  • the UE 430 in RRC Idle or RRC Inactive is camping on the frequency layer F2 414 provided by BS #A 410.
  • the BS #A 410 decides to power off the cell on the frequency layer F2 414.
  • the powering off of the cell on the frequency layer F2 414 requires the UE to perform cell reselection. Due to the reselection procedure in which absolute frequency priorities may favor capacity cells, the UE may most likely reselect to the cell on the frequency layer F2 424 of the neighbor BS #B 420. Typically, UE will reselect to the same frequency layer F2, instead of moving to the cell operating on the frequency layer Fl 412 of BS #A 410. However, the cell coverage / radio strength (RSRP) of the cell using the frequency layer F2 424 of BS #B 420 may be not sufficient.
  • RSRP radio strength
  • the reselection requires the UE context to be moved from BS #A 410 to BS #B 420, whenever the UE has to be served, causing significant delays.
  • the reselection may cause a Tracking Area (TA) / RAN Notification Area (RNA) update if the cells from BS #A 410 and BS #B 420 belong to different areas, causing unnecessary signaling overhead and energy consumption at UE and RAN.
  • TA Tracking Area
  • RNA RAN Notification Area
  • the UE will camp thereon and does not perform measurements if the RSRP (Srxlev) and radio quality (Squal) is sufficiently good (network configured thresholds SintraSearchP and SintraSearchQ).
  • the UE will perform intra-frequency measurements and thus reselect to the cell using the frequency layer F2 424 of BS #B 420 if that cell is sufficiently good in terms of RSRP and radio quality.
  • FIG. 5 illustrates a flowchart of a method 500 or process for cell reselection during a network energy saving in a network according to some embodiments.
  • the method 500 is performed by a terminal node (e.g., a user device or a User Equipment ( E)).
  • the method 500 may also be performed by an apparatus in, or for use in, such a terminal node.
  • the terminal node may be represented by any one of the wireless devices, such as UEs 110A-110B of the wireless network 100 as described above with reference to FIG. 1, or the wireless device 110 as described above with reference to FIG. 2.
  • the terminal node is connected to, and served by, the network 100 of FIG. 1.
  • the network 100 may include one or more network nodes such as base stations (e.g., gNBs 120A, 120B of FIG. 1) and the network node or network function 130 of FIG. 1.
  • the terminal node may be located in an area (e.g., a cell 115 of FIG. 1) served by the base station (e.g., gNBs 120A, 120B). In other words, the terminal node may be camping on the (serving) cell 115 served by the gNBs 120 A, 120B.
  • the terminal node may also be represented by the UE 430 camping on a frequency layer (e.g., the frequency layer F2 414) provided by the base station BS #A 410, shown in FIG. 4.
  • the terminal node may be in a Radio Resource Control (RRC) Idle or RRC Inactive mode.
  • RRC Radio Resource Control
  • the method 500 starts at block 510.
  • the terminal node receives, from the network, a cell reselection configuration related to an energy-saving mode in the network.
  • the cell e.g., the serving cell
  • the energy-saving mode in the network represents a mode where the cell (e.g., the serving cell or a frequency layer of the serving cell) is powered off or shut down (e.g., a cell shutdown mode, a cell deactivation mode).
  • the cell may be powered off or shut down at some point in time to obtain energy saving.
  • the network or the base station serving the cell may at some point in time determine that most or all UEs are camping on the cell (i.e., the UEs are in the RRC idle or inactive mode) and decide that there is no need to keep the cell active.
  • the network may decide to save energy by setting the cell (or a frequency layer of the cell) in the energy-saving mode (i.e., the network energy saving (NES) mode).
  • the energy-saving mode represents a mode where one or more functions such as reception and/or transmission within the cell are deactivated (e.g., a cell discontinuous reception (DRX) mode, a discontinuous transmission (DTX) mode).
  • the cell reselection configuration related to the energy-saving mode may also be referred to as a secondary configuration for cell reselection information (or secondary cell reselection configuration).
  • the cell reselection configuration related to the energy-saving mode may be different from a cell reselection configuration used in a mode of the network (or the cell) other than the energy-saving mode.
  • the cell reselection configuration related to the mode other than the energy-saving mode e.g., an active mode
  • the terminal node is preconfigured by the cell (or the base station serving the cell) with the cell reselection configuration related to a mode other than the energy-saving mode (i.e., primary /legacy cell reselection configuration) as well as the cell reselection configuration related to the energy-saving mode (i.e., secondary cell reselection configuration).
  • the cell reselection configuration related to a mode other than the energy-saving mode (i.e., primary /legacy cell reselection configuration) as well as the cell reselection configuration related to the energy-saving mode (i.e., secondary cell reselection configuration).
  • the terminal node performs cell reselection according to the cell reselection configuration related to the energy-saving mode. More specifically, the terminal node performs the cell reselection according to the cell reselection configuration related to the energy-saving mode in response to the network indicating the energy saving mode.
  • the network e.g., the base station or the cell
  • the network may indicate to the terminal node that the cell or part thereof (e.g., a frequency layer of the cell) is or will be set to the energy-saving mode.
  • the terminal node is informed that the cell on which the terminal node is camping is (or will be) entering the energy-saving mode and that the terminal node is to perform a procedure for cell reselection to select a cell (or a frequency layer of the cell) which is in a mode different from the energy-saving mode (e.g., an active mode).
  • a mode different from the energy-saving mode e.g., an active mode
  • the terminal node may also be informed that the cell on which the terminal node is camping is (or will be) change the energy-saving mode (e.g., between different energy-saving modes or from the energy-saving mode to a different mode such as an active mode) and that the terminal node is to perform a procedure for cell reselection to select a cell (or a frequency layer of the cell) which is in a mode different from the energy-saving mode.
  • the terminal node applies the cell reselection configuration related to the energy-saving mode.
  • the terminal node when the network indicates the energy-saving mode, applies the cell reselection configuration related to the energy-saving mode (i.e., the secondary cell reselection configuration) and not the cell reselection configuration related to a mode other than the energysaving mode (i.e., primary /legacy cell reselection configuration).
  • the terminal node applies the secondary cell reselection configuration when the energy-saving mode of the network (e.g. of the network node) is on (e.g. when the cell of the network node is in or enters the energy-saving mode), and the terminal node applies the primary cell reselection configuration when the energy-saving mode of the network (e.g. of the network node) is off.
  • the terminal node may apply the cell reselection configuration related to a mode other than the energy-saving mode in situations other than when the network indicates the energy-saving mode.
  • the terminal node may perform the cell reselection (or the corresponding procedure) at block 520 in response to receiving, at block 515, an indication indicating the energy-saving mode from the network.
  • the network may provide the indication to the terminal node by the base station transmitting a message indicating the energy-saving mode to the terminal node and the network node may then perform the cell reselection (block 520) based on the indication (i.e., the message or information included in the message).
  • the terminal node may also derive the indication and thus entry of the energy-saving mode (i.e., the cell entered or will enter the energy-saving mode) from an updated cell reselection configuration received from the network or from an updated transmit power level.
  • the terminal node determines that the cell reselection configuration has been updated by the network.
  • the terminal node determines a change in the transmit power level compared to a transmit power level configured for the terminal node or used by the terminal node, the terminal node determines that the transmit power level has been updated by the network.
  • the terminal node may perform the cell reselection according to the cell reselection configuration related to the energy-saving mode.
  • Examples of messages that indicate the energy-saving mode in the network include a message of a downlink control information (DCI), e.g. a short message of a paging DCI, or a system information broadcast (SIB) received by the terminal node from the network.
  • the terminal node may determine the energy-saving mode from one or more bits of the DCI or the SIB, which are associated with the indication of the energy-saving mode. For example, when the terminal node determines that a bit associated with the indication of the energy-saving mode is set (e.g., is set to a bit value "1"), the terminal node determines that the energy-saving mode is to be entered or will be entered.
  • DCI downlink control information
  • SIB system information broadcast
  • the terminal node performs the cell reselection according to the cell reselection configuration related to the energy-saving mode. Otherwise (i.e., when the terminal node determines that the bit associated with the indication of the energy-saving mode is not set - e.g., is set to a bit value "0"), the terminal node determines that the energy-saving mode is not to be entered. In this case, the terminal node does not perform the cell reselection at all or may perform the cell reselection according to the cell reselection configuration related to a mode other than the energy-saving mode (e.g., the primary /legacy cell reselection configuration).
  • the terminal node does not perform the cell reselection at all or may perform the cell reselection according to the cell reselection configuration related to a mode other than the energy-saving mode (e.g., the primary /legacy cell reselection configuration).
  • the indication received by the terminal node may further define a time when the energy-saving mode is to be entered.
  • the indication is included in the cell-reselection configuration.
  • the indication is a separate message from the cell-reselection configuration.
  • the indication indicates that the cell enters the energy-saving mode and when (i.e., the time) the cell enters the energy-saving mode.
  • the time may be defined based on a system information (SI) modification period, a timer included in the cell reselection configuration, an offset to an absolute time of the network (e.g.
  • SI system information
  • the absolute time being the time when the network enters the energy-saving mode, or some other time instant defined by network
  • a time offset before the time when the energy-saving mode is to be entered i.e., a time offset configured by the network node before the cell shutdown
  • an indication of an absolute time e.g. the absolute time being the time when the network enters the energysaving mode, or some other time instant defined by network
  • the indication received by the terminal node may also define a time when the energysaving mode is changed or stopped. That is, the indication indicates that the cell changes or stops the energy-saving mode and when (i.e., the time) the cell changes or stops the energysaving mode.
  • the terminal node may perform the cell reselection (block 520) in accordance with the SI modification period.
  • the terminal node may initialize the timer with a timer value defined by the cell reselection configuration related to the energy-saving mode (or with a timer value preconfigured at the terminal node) and start the timer in response to receiving the indication (block 515).
  • the terminal node may detect that the network has entered the energy saving mode in response to lapse of the timer.
  • the terminal node may then perform the cell reselection according to the secondary cell-reselection configuration (block 520) in response to lapse of the timer.
  • the terminal node may determine the absolute time configured by the network and calculate a time when the network enters the energy saving mode and thus the start of the time when the terminal node performs the cell reselection according to the secondary cell reselection configuration (block 520) based on the absolute time of the network and the offset.
  • the offset and the absolute time may be provided in the indication, or the offset may be provided in the secondary cell reselection configuration and the absolute time in the indicator, or vice versa.
  • the terminal node may subtract the offset from the absolute time to calculate the time when the network enters the energy saving mode.
  • the terminal node may then perform the cell reselection (block 520) according to the secondary cell reselection configuration.
  • the offset may define or relate to a (sub-)frame number.
  • the terminal device may perform the cell reselection (block 520) at or after the absolute time according to the secondary cell reselection configuration.
  • the absolute time may be provided in the indication.
  • the cell reselection configuration related to the energy-saving mode comprises information typically different from information included in a cell reselection configuration used in a mode of the network other than the energy-saving mode (i.e., the primary/legacy cell reselection configuration).
  • the cell reselection configuration related to the energy-saving mode may comprise a priority configuration and/or a threshold configuration.
  • the priority configuration and the threshold configuration may relate to intra-frequency, inter-frequency, and inter-radio access technology (RAT) mobility.
  • RAT inter-radio access technology
  • the priority configuration may differ from a priority configuration (a threshold configuration) of the cell reselection configuration used in a mode of the network other than the energy-saving mode.
  • the terminal node may perform the cell reselection (block 520) according to the priority configuration and/or the threshold configuration.
  • the terminal node may perform a cell reselection process according to the priority configuration and/or the threshold configuration.
  • the cell reselection procedure may comprise a measurement process and/or an evaluation process.
  • secondary cell reselection configuration may have a different radio power and/or quality threshold for selecting to another (neighboring) cell than the primary cell reselection configuration, and/or the secondary cell reselection configuration may have a different priority for a certain frequency than the primary cell reselection configuration, as will be explained later in more details.
  • the priority configuration examples include an absolute priority (i.e., a priority to be used as is by the terminal node), a relative priority relative to a priority of the cell reselection configuration used in a mode of the network other than the energy-saving mode such as the primary/legacy cell reselection configuration or relative to a priority currently used (i.e., a priority to be used by the terminal node is determined based on a reference priority such as the actual priority and the relative priority), and/or an offset relative to the cell reselection configuration used in a mode of the network other than the energy-saving mode such as the primary/legacy cell reselection configuration (i.e., a priority to be used by the terminal node is determined based on the priority included in the primary/legacy cell reselection configuration and the offset).
  • an absolute priority i.e., a priority to be used as is by the terminal node
  • the threshold configuration examples include one or more radio power/quality thresholds for the cell reselection. Similar to the priority configuration, the one or more radio power/quality thresholds may also be defined by including an absolute radio power/quality threshold, a relative radio power/quality threshold relative to a cell reselection configuration used in a mode other than the energy-saving mode (e.g., the primary/legacy cell reselection configuration or the cell reselection configuration currently used), and/or an offset relative to radio power/quality thresholds of the primary/legacy cell reselection configuration.
  • an absolute radio power/quality threshold e.g., a relative radio power/quality threshold relative to a cell reselection configuration used in a mode other than the energy-saving mode (e.g., the primary/legacy cell reselection configuration or the cell reselection configuration currently used)
  • an offset relative to radio power/quality thresholds of the primary/legacy cell reselection configuration e.g., the primary/legacy cell
  • FIG. 6 illustrates a flowchart of a method 600 or process for cell reselection during a network energy saving in a network according to some embodiments.
  • the method 600 is performed by a network (e.g., a network node or network function, including a Base Station (BS)).
  • the method 600 may also be performed by an apparatus in, or for use in, such a network node or network function.
  • the network node may be represented by any one of the networks nodes, such as gNBs 120A-120B or network node 130 of the wireless network 100 as described above with reference to FIG. 1, or the network node 120/130 as described above with reference to FIG. 3.
  • the network node may serve a cell (e.g., a cell 115 of FIG. 1) in an area of which a terminal node (e.g., the user device or UE 110) is located.
  • the terminal node may be camping on the (serving) cell 115 served by the gNBs 120A, 120B.
  • the network node may also be represented by the base station BS #A 410 shown in FIG. 4 that serves a cell having a frequency layer (e.g., the frequency layer F2 414) on which the terminal node (e.g., the UE 430 of FIG. 4) is camping.
  • the terminal node may be in a Radio Resource Control (RRC) Idle or RRC Inactive mode.
  • RRC Radio Resource Control
  • the method 600 starts at block 610.
  • the network node transmits, to the terminal node, a cell reselection configuration related to an energy-saving mode in the network.
  • the network node i.e., the (serving) cell
  • the energy-saving mode in the network represents a mode where the cell (e.g., the serving cell or a frequency layer of the serving cell) is powered off or shut down.
  • the network node e.g., the base station
  • the network node may at some point in time determine that most or all terminal nodes (e.g., UEs) are camping on the cell (i.e., the UEs are in the RRC idle or inactive mode) and decide that there is no need to keep the cell active. That is, the network node may decide to save energy by setting the cell (or a frequency layer of the cell) in the energy-saving mode.
  • the network node may decide to deactivate one or more functions of the cell such as reception and/or transmission (e.g., a cell discontinuous reception (DRX) mode, a discontinuous transmission (DTX) mode).
  • DRX cell discontinuous reception
  • DTX discontinuous transmission
  • the cell reselection configuration related to the energy-saving mode may be different from a cell reselection configuration used in a mode of the network (or the cell) other than the energy-saving mode (e.g., the primary /legacy configuration for cell reselection information or the primary /legacy cell reselection configuration).
  • the network node preconfigures the terminal node with the cell reselection configuration related to a mode other than the energy-saving mode (i.e., the primary/legacy cell reselection configuration) as well as the cell reselection configuration related to the energy-saving mode (i.e., the secondary cell reselection configuration).
  • the cell reselection configuration related to a mode other than the energy-saving mode (i.e., the primary/legacy cell reselection configuration) as well as the cell reselection configuration related to the energy-saving mode (i.e., the secondary cell reselection configuration).
  • the network node indicates, to the terminal node, to perform cell reselection according to the cell reselection configuration related to the energy-saving mode. In response to indicating the energy-saving mode, the terminal node performs the cell reselection.
  • the network node may indicate to the terminal node that the cell or part thereof (e.g., a frequency layer of the cell) is or will be set to the energysaving mode, thereby informing the terminal node that the cell on which the terminal node is camping is (or will be) entering the energy-saving mode and that the terminal node is to perform a procedure for cell reselection to select a cell (or a frequency layer of the cell) which is in a mode different from the energy-saving mode (e.g., an active mode).
  • the cell or part thereof e.g., a frequency layer of the cell
  • the energysaving mode e.g., an active mode
  • the network node may at some point in time determine that the cell or a part thereof (i.e., a frequency layer of the cell or a function of the cell such as transmission or reception) is to be set to the energy-saving mode (block 615).
  • the network node serving the cell may determine that most or all terminal nodes (e.g., UEs) are camping on the cell (i.e., the UEs are in the RRC idle or inactive mode) and then decide that there is no need to keep the cell active. That is, the network node may decide to save energy by setting the cell or part thereof in the energy-saving mode.
  • the network node may trigger the cell to enter the energy-saving mode or schedule (i.e., define a time) when the cell is to enter the energy-saving mode.
  • the network node may decide whether the cell is to enter the energy-saving mode instantly (i.e., without substantial time delay) or after a certain time period (i.e., at a certain time) in response to the decision.
  • the network node may provide an indication to indicate the energy-saving mode to the terminal node.
  • the network node may provide the indication to the terminal node by transmitting a message indicating the energy-saving mode.
  • the network node may also provide an updated cell reselection configuration or an updated transmit power level, from which the terminal node derives the indication and thus entry of the energy-saving mode (i.e., the cell entered or will enter the energy-saving mode).
  • network node may change the cell reselection configuration (e.g., the primary cell reselection configuration) or one or more parameters thereof compared to the cell reselection configuration configured at the terminal node.
  • the network node may change the transmit power level compared to a transmit power level configured for the terminal node or used by the terminal node.
  • Examples of messages the network node transmits to the terminal node to indicate the energysaving mode include a short message of a paging downlink control information (DCI) or a system information broadcast (SIB).
  • the network node may set one or more bits of the paging DCI or the SIB, which are associated with the indication of the energy-saving mode, to provide the indication to the terminal node. For example, the network node may set a bit associated with the indication of the energy-saving mode (i.e., set the bit to a bit value "1") to indicate the energy-saving mode. Otherwise, the network node may not set the bit (i.e., set the bit to a bit value "0") to indicate that the energysaving mode is not to be entered (or that a mode other than the energy-saving mode is entered).
  • DCI paging downlink control information
  • SIB system information broadcast
  • the network node may further define a time when the energy-saving mode is to be entered.
  • the indication therefore indicates that the cell will enter the energy-saving mode and when (i.e., the time) the cell is to enter the energy-saving mode.
  • the time may be defined based on a system information (SI) modification period, a timer included in the cell reselection configuration, an offset of an absolute time of the network, a time offset before the time when the energy-saving mode is to be entered (i.e., a time offset before the cell shutdown), or an indication of an absolute time.
  • SI system information
  • the network node may define or update the SI modification period to define the time when the energy-saving mode will be entered.
  • the network node may define the time by indicating a timer included in the cell reselection configuration.
  • the timer is to be initialized and started by the terminal node. Lapse of the timer indicates to the terminal node that the terminal node is to perform the procedure for cell reselection as the cell entered or is to enter the energy-saving mode.
  • the network node may define an offset of an absolute time of the network.
  • the terminal node calculates the time for performing the cell reselection based on the absolute time and the offset.
  • the terminal node may perform the cell reselection at the calculated time.
  • the network node may define an absolute time (e.g., the absolute time of the network) when the terminal device is to perform the cell reselection.
  • the network node may transmit the cell reselection configuration related to the energy-saving mode (i.e., the secondary cell reselection configuration) to the terminal node (block 610) which comprises information different from information included in a cell reselection configuration used in a mode of the network other than the energy-saving mode (i.e., the primary/legacy cell reselection configuration).
  • the cell reselection configuration related to the energy-saving mode may comprise a priority configuration and/or a threshold configuration.
  • the priority configuration and the threshold configuration may relate to intra-frequency, inter-frequency, and inter-radio access technology (RAT) mobility.
  • the priority configuration (the threshold configuration) may differ from a priority configuration (a threshold configuration) of the cell reselection configuration used in a mode of the network other than the energy-saving mode.
  • the priority configuration examples include an absolute priority (i.e., a priority to be used as is by the terminal node), a relative priority relative to a priority of a cell reselection configuration used in a mode in the network other than the energy-saving mode (e.g., the legacy cell reselection configuration) or a priority currently used (i.e., a priority to be used by the terminal node is determined based on a reference priority such as the actual priority and the relative priority), and/or an offset relative to the cell reselection mode used in a mode of the network other than the energy-saving mode such as the primary/legacy cell reselection configuration (i.e., a priority to be used by the terminal node is determined based on the priority included in the primary/legacy cell reselection configuration and the offset).
  • an absolute priority i.e., a priority to be used as is by the terminal node
  • the threshold configuration examples include one or more radio power/quality thresholds for the cell reselection. Similar to the priority configuration, the one or more radio power/quality thresholds may also be defined by including an absolute radio power/quality threshold, a relative radio power/quality threshold relative to a cell reselection configuration used in a mode other than the energy-saving mode (e.g., the primary/legacy cell reselection configuration or the cell reselection configuration currently used) and/or an offset relative to radio power/quality thresholds of the primary /legacy cell reselection configuration.
  • an absolute radio power/quality threshold e.g., a relative radio power/quality threshold relative to a cell reselection configuration used in a mode other than the energy-saving mode (e.g., the primary/legacy cell reselection configuration or the cell reselection configuration currently used) and/or an offset relative to radio power/quality thresholds of the primary /legacy cell reselection configuration.
  • FIG. 7 An exemplary message sequence diagram of the methods or processes for cell reselection during a network energy saving in a network according to some embodiments will now be described with reference to FIG. 7.
  • the UE e.g., a terminal node performing the methods of FIG. 5
  • the first cell is served by a first base station (e.g., a network node performing the methods of FIG. 6).
  • a second cell (designed cell B in FIG. 7) which may be a neighboring cell to the first cell is served by a second base station or by the first base station.
  • the first cell configures the UE at least with a cell reselection configuration related to an energy-saving mode (e.g., a secondary cell reselection configuration).
  • Step 705 of FIG. 7 corresponds to block 510 of FIG. 5 and block 610 of FIG. 6.
  • the secondary cell reselection configuration may be provided by the first base station to the UE in a system information broadcast (SIB) message.
  • SIB system information broadcast
  • the first cell also configures the UE with a cell reselection configuration related to a mode different than the energy-saving mode (e.g., a primary /legacy cell reselection configuration).
  • the UE applies the primary /legacy cell reselection configuration and performs a procedure for cell reselection according to the primary/legacy cell reselection configuration.
  • the UE performs the procedure for cell reselection by evaluating the first cell and the second cell according to the primary/legacy cell reselection configuration (step 725). The evaluation is based on reference signals received from the first cell (step 715) and from the second cell (step 720). Based on the result of the procedure, the UE may select the first cell (i.e., cell A).
  • the first base station may decide to place the first cell in the energy-saving mode. For example, the first base station may determine that the UE in the RRC idle or RRC inactive mode is camping on the first cell for some time and decide that the first cell may enter the energy-saving mode. Examples for the energy-saving mode includes a cell shutdown mode, a cell deactivation mode, a cell sleep, a cell DRX mode or a cell DTX mode. The decision to place the first cell in the energy-saving mode corresponds to block 615 of FIG. 6.
  • the first cell indicates to the UE that the first cell will enter the energy-saving mode (e.g., that cell A will shut down).
  • the indication may also indicate a time when the first cell will enter the energy-saving mode (e.g., when cell A will shut down).
  • the first cell may provide a short message of a paging DCI or a SIB to the UE to indicate that the first cell will enter the energy-saving mode.
  • Step 730 of FIG. 7 corresponds to block 515 of FIG. 5 and block 620 of FIG. 6.
  • the first cell enters the energy-saving mode (e.g., cell A is shut down) (step 735).
  • the energy-saving mode e.g., cell A is shut down
  • the first cell may also provide the indication that the first cell will enter the energy-saving mode and optionally when the first cell will enter the energy-saving mode in the (SIB) message (step 705). That is, the first cell may configure the primary/legacy cell reselection configuration and the secondary cell reselection configuration and also indicate that (and/or when) the first cell will enter the energy-saving mode in the (SIB) message at step 705.
  • the UE In response to receiving the indication, the UE applies the secondary cell reselection configuration and thus the cell reselection configuration related to the energy-saving mode (step 740) and performs the procedure for cell reselection according to the secondary cell reselection configuration.
  • the UE performs the procedure for cell reselection (e.g a measurement process and/or an evaluation process) according to a priority configuration and/or a threshold configuration of the secondary cell reselection configuration.
  • Step 740 of FIG. 7 corresponds to block 520 of FIG. 5.
  • the UE performs the procedure for cell reselection by evaluating the second cell according to the secondary cell reselection configuration (step 750).
  • the evaluation is based on reference signals received from the second cell (step 745). Since the first cell entered or will enter the energy-saving mode, the UE does not evaluate the first cell according to the secondary cell reselection configuration. The first cell may not provide reference signals at all.
  • the UE may reselect the second cell (i.e., cell B) at step 755.
  • the first cell defines energy-saving mode-specific counterparts (i.e., the secondary cell reselection configuration comprising a priority configuration and/or a threshold configuration that are specifically applied when the cell is in the energy-saving mode) to the primary/legacy cell reselection configuration (i.e., a priority configuration and/or a threshold configuration that are applied when the cell is not in the energy-saving mode).
  • the secondary cell reselection configuration comprising a priority configuration and/or a threshold configuration that are specifically applied when the cell is in the energy-saving mode
  • the primary/legacy cell reselection configuration i.e., a priority configuration and/or a threshold configuration that are applied when the cell is not in the energy-saving mode
  • An exemplary parameter for a secondary cell reselection configuration includes the cellReselectionPriority parameter in SIB4 (inter-frequency) and SIB5 (inter-RAT).
  • the cellReselectionPriority parameter may include an option for the energy-saving mode (e.g., a cellReselectionPriority-NES option).
  • the cellReselectionPriority-NES option may be activated upon reception of the indication that the cell will enter the energy-saving mode (i.e., the cell will be shut down).
  • Another exemplary parameter for a secondary cell reselection configuration includes the parameters (for intra-frequency reselection) related to the RSRP and radio quality thresholds in SIB2 (i.e., SnonimraSearchP and SnonintraSearchQ). These parameters may include an option for the energy-saving mode (e.g., a SnonintraSearchP-NES option and SnonintraSearchQ-NES option).
  • SIB2 may be the cellReselectionPriority parameter, which may be complemented with an option for the energy-saving mode (e.g., a cellReselectionPriority-NES option).
  • the UE will perform the procedure for cell reselection according to the secondary cell reselection configuration and thus applies the exemplary parameters as given by the options for the energy-saving mode. For example, the UE performs the procedure for cell reselection (e.g., a measurement process and/or an evaluation process) according to a priority configuration and/or a threshold configuration of the secondary cell reselection configuration.
  • the procedure for cell reselection e.g., a measurement process and/or an evaluation process
  • the embodiments of the subject disclosure preconfigure UEs in RRC Idle or RRC Inactive with a secondary configuration for cell reselection measurements.
  • the secondary configuration relates to a network energy saving mode and may include at least a different value of a priority per frequency layer compared to the primary/legacy configuration for cell reselection measurements or a different value for radio power/quality intra-frequency cell reselection thresholds compared to the primary/legacy configuration for cell reselection measurements.
  • the secondary configuration is activated by the cell (the cell providing an indication related to the network energy saving mode) before the cell enters the network energy saving mode (e.g., the cell is shut down). Activating the secondary configuration enables the UEs to make a cell reselection according to the secondary configuration that is different than a cell reselection when made using the primary /legacy configuration information.
  • the cell preconfigures the UE with a secondary configuration for cell reselection information in addition to a primary/legacy configuration for cell reselection information.
  • the secondary configuration may cover additional priorities and/or thresholds for intra-frequency, inter-frequency and/or inter-RAT mobility.
  • the cell may provide an additional intraFreqCellReselectionlnfo information element (IE) including at least a different value of the parameter cellReselectionPriority or cellReselectionSubPriority compared to the primary/legacy configuration.
  • the secondary configuration may also indicate an offset X relative to the primary configuration.
  • the cell may provide additional intra-frequency radio power/quality thresholds for the cell reselection evaluation procedure.
  • the cell indicates the network energy saving mode (e.g., the cell shut down) to the UE.
  • the indication may be in one of the spare bits of the short message of the paging DCI or alternatively SIB 1.
  • the indication triggers the UE to acquire SIB2, which the cell may update to reflect the values, otherwise provided in the secondary configuration (e.g., the reselection priorities).
  • the indication may also define when the network energy saving mode will be entered (e.g., when the cell will shut down) in an absolute time.
  • the indication may be linked to the SI modification period, or a timer indicated in the secondary configuration for cell reselection.
  • the UE applies the secondary configuration for cell reselection.
  • the UE may apply the information such as the frequency priority and/or RSRP/power/quality thresholds according to the secondary configuration.
  • the UE may apply the primary/legacy configuration for cell reselection until the time of network energy saving (i.e., until the time of cell shut down) and afterwards the secondary configuration.
  • the UE may apply the secondary configuration a time offset configured by the cell before the network energy saving (i.e., the cell shut down).
  • the UE performs the cell reselection procedure according to the secondary configuration.
  • the priority for frequency layer Fl may be increased to be higher than the priority for frequency layer F2 or the SnonimraSearchP and the SnonintraSearchQ may be reduced to force the UE to measure also lower priority cells.
  • the embodiments of the subject disclosure enable the network to control the RRC Idle/Inactive UE cell reselection without utilizing the system information change procedure which is typically relatively slow.
  • the embodiments of the subject disclosure also facilitate the use of network energy saving (e.g., cell shutdown) while avoiding unexpected UE mobility events and related TA/RNA updates.
  • embodiments of the subject disclosure allow to set the priority of the frequency layer Fl 412 higher than the frequency layer F2 414, causing the UE 430 camping on the frequency layer F2 414 to reselect the frequency layer Fl 412 of BS #A 410.
  • the UE 430 will only measure the lower priority inter-frequency (and inter-RAT) if the serving cell RSRP and radio quality is below the network configured thresholds SnonintraSearchP and SnonintraSearchQ. Otherwise, the UE will not perform such measurements.
  • FIGS. 8 A and 8B illustrate schematic block diagrams showing structures of apparatuses according to embodiments of the subject disclosure.
  • the blocks are basically configured to perform respective methods, procedures and/or functions as described above. It is to be noted that the individual blocks are meant to illustrate respective functional blocks implementing a respective function, process, or procedure, respectively. Such functional blocks are implementation-independent, i.e., may be implemented by means of any kind of hardware or software or combination thereof, respectively.
  • An apparatus may represent or realize/embody a (e.g., part of a) a User Equipment (UE) as an example of a wireless device or entity. Such apparatus may be illustrated or realized as is shown in FIG. 2.
  • the apparatus or the at least one processor 220 (e.g., together with instructions stored in the at least one memory 230) may be configured to receive, from a network, a cell reselection configuration related to an energy-saving mode in the network and perform cell reselection according to the cell reselection configuration responsive to the network indicating the energy-saving mode.
  • the apparatus or the at least one processor 220 may be configured to receive, from the network, an indication indicating the energy-saving mode in the network. Such receiving may comprise receiving a short message of a paging downlink control information (DCI) or receiving a system information broadcast (SIB). The short message or the SIB comprises one or more bits indicating the energy-saving mode in the network. Also, the apparatus or the at least one processor 220 (e.g., together with instructions stored in the at least one memory 230) may be configured to define a time when the energy-saving mode is to be entered.
  • DCI paging downlink control information
  • SIB system information broadcast
  • the short message or the SIB comprises one or more bits indicating the energy-saving mode in the network.
  • the apparatus or the at least one processor 220 e.g., together with instructions stored in the at least one memory 230
  • the apparatus or the at least one processor 220 may be configured to perform a cell reselection procedure according to the priority configuration and/or perform the cell reselection procedure according to the threshold configuration.
  • the cell reselection procedure may include a measurement process and/or an evaluation process.
  • the apparatus 800 may comprise (at least) one or more unit/means/circuitry, denoted by receiving section 810, which represent any implementation for (or configured to) receiving, from a network, a cell reselection configuration related to an energy-saving mode in the network, and (at least) one or more unit/means/circuitry, denoted by cell reselection section 820, which represent any implementation for (or configured to) performing cell reselection responsive to the network indicating the energy-saving mode.
  • receiving section 810 represent any implementation for (or configured to) receiving, from a network, a cell reselection configuration related to an energy-saving mode in the network
  • cell reselection section 820 which represent any implementation for (or configured to) performing cell reselection responsive to the network indicating the energy-saving mode.
  • the apparatus 800 may comprise (at least) one or more unit/means/circuitry, denoted by defining section 830, which represent any implementation for (or configured to) defining a time when the energy-saving mode is to be entered.
  • an apparatus may represent or realize/embody a (e.g., part of a) network entity (such as any kind of base station or the like) as an example of a network device or entity.
  • a network entity such as any kind of base station or the like
  • the apparatus or the at least one processor 320 may be configured to transmit, to a terminal node (e.g., a User Equipment ( E)), a cell reselection configuration related to an energy-saving mode in a network and indicate, to the terminal node, to perform cell reselection according to the cell reselection configuration.
  • a terminal node e.g., a User Equipment ( E)
  • E User Equipment
  • the apparatus or the at least one processor 320 may be configured to transmit, to the terminal node, an indication indicating the energy-saving mode in the network. Such transmitting may comprise transmitting a short message of a paging downlink control information (DCI) or transmitting a system information broadcast (SIB). The short message or the SIB comprises one or more bits indicating the energy-saving mode in the network. Also, the apparatus or the at least one processor 320 (e.g., together with instructions stored in the at least one memory 330) may be configured to define a time when the energy-saving mode is to be entered.
  • DCI paging downlink control information
  • SIB system information broadcast
  • the apparatus 850 may comprise (at least) one or more unit/means/circuitry, denoted by transmitting section 860, which represent any implementation for (or configured to) transmitting, to a terminal node, a cell reselection configuration related to an energy-saving mode in a network, and (at least) one or more unit/means/circuitry, denoted by indicating section 860, which represent any implementation for (or configured to) indicating, to the terminal node, to perform cell reselection according to the cell reselection configuration.
  • transmitting section 860 which represent any implementation for (or configured to) transmitting, to a terminal node, a cell reselection configuration related to an energy-saving mode in a network
  • indicating section 860 which represent any implementation for (or configured to) indicating, to the terminal node, to perform cell reselection according to the cell reselection configuration.
  • the apparatus 850 may comprise (at least) one or more unit/means/circuitry, denoted by defining section 870, which represent any implementation for (or configured to) defining a time when the energy-saving mode is to be entered.
  • defining section 870 represent any implementation for (or configured to) defining a time when the energy-saving mode is to be entered.
  • apparatuses may comprise or be coupled to other units or modules etc., such as radio parts or radio heads, used in or for transmission and/or reception.
  • apparatuses have been described as one entity, different modules and memory may be implemented in one or more physical or logical entities.
  • the various exemplary embodiments may be implemented in hardware or special purpose circuits, software, logic, or any combination thereof.
  • Some aspects of the subject disclosure 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, although the subject disclosure is not limited thereto. While various aspects of the subject disclosure may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques, or methods 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.
  • Example embodiments of the subject disclosure may be implemented by computer software executable by a data processor of the mobile device, such as in the processor entity, or by hardware, or by a combination of software and hardware.
  • Computer software or program also called program product, including software routines, applets and/or macros, may be stored in any apparatus-readable data storage medium and they comprise program instructions to perform particular tasks.
  • a computer program product may comprise one or more computer- executable components which, when the program is run, are configured to carry out embodiments.
  • the one or more computer-executable components may be at least one software code or portions of it.
  • any blocks of the logic flow as in the figures may represent program steps, or interconnected logic circuits, blocks and functions, or a combination of program steps and logic circuits, blocks, and functions.
  • the software may be stored on such physical media as memory chips, or memory blocks implemented within the processor, magnetic media such as hard disk or floppy disks, and optical media such as for example DVD and the data variants thereof, CD.
  • the physical media is a non-transitory media.
  • the memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, and removable memory.
  • the data processors may be of any type suitable to the local technical environment, and may comprise one or more of general-purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs), application specific integrated circuits (ASICs), FPGA, gate level circuits and processors based on multi-core processor architecture, as non-limiting examples.
  • Example embodiments of the subject disclosure may be practiced in various components such as integrated circuit modules.
  • the design of integrated circuits is by and large a highly automated process.
  • Complex and powerful software tools are available for converting a logic level design into a semiconductor circuit design ready to be etched and formed on a semiconductor substrate.

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Abstract

L'invention concerne des techniques de commande de resélection de cellule pendant une économie d'énergie de réseau dans un réseau. Par exemple, un procédé mis en œuvre par un nœud terminal consiste à : recevoir, en provenance d'un réseau, une configuration de resélection de cellule associée à un mode d'économie d'énergie dans le réseau ; et en réponse au réseau indiquant le mode d'économie d'énergie, effectuer une resélection de cellule selon la configuration de resélection de cellule.
PCT/EP2023/064747 2023-06-01 2023-06-01 Commande de mobilité en mode veille (resélection de cellule) pendant un mode d'économie d'énergie de réseau mis en œuvre sur une base de cellule Pending WO2024245564A1 (fr)

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PCT/EP2023/064747 WO2024245564A1 (fr) 2023-06-01 2023-06-01 Commande de mobilité en mode veille (resélection de cellule) pendant un mode d'économie d'énergie de réseau mis en œuvre sur une base de cellule

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PCT/EP2023/064747 WO2024245564A1 (fr) 2023-06-01 2023-06-01 Commande de mobilité en mode veille (resélection de cellule) pendant un mode d'économie d'énergie de réseau mis en œuvre sur une base de cellule

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150312826A1 (en) * 2014-04-28 2015-10-29 Candy Yiu Load balancing in a wireless cellular network based on user equipment mobility
US20190182764A1 (en) * 2016-03-01 2019-06-13 Telefonaktiebolaget Lm Ericsson Energy efficient operation of radio network nodes and wireless communication devices in nb-iot
GB2609048A (en) * 2021-07-21 2023-01-25 Nec Corp Communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150312826A1 (en) * 2014-04-28 2015-10-29 Candy Yiu Load balancing in a wireless cellular network based on user equipment mobility
US20190182764A1 (en) * 2016-03-01 2019-06-13 Telefonaktiebolaget Lm Ericsson Energy efficient operation of radio network nodes and wireless communication devices in nb-iot
GB2609048A (en) * 2021-07-21 2023-01-25 Nec Corp Communication system

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