WO2026028040A1 - Procédé, appareil et programme informatique de rapport de mesure basé sur un événement de cellules cibles - Google Patents

Procédé, appareil et programme informatique de rapport de mesure basé sur un événement de cellules cibles

Info

Publication number
WO2026028040A1
WO2026028040A1 PCT/IB2025/057537 IB2025057537W WO2026028040A1 WO 2026028040 A1 WO2026028040 A1 WO 2026028040A1 IB 2025057537 W IB2025057537 W IB 2025057537W WO 2026028040 A1 WO2026028040 A1 WO 2026028040A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
user equipment
condition
value
service
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/IB2025/057537
Other languages
English (en)
Inventor
Renato Barbosa ABREU
Rapeepat Ratasuk
Nitin MANGALVEDHE
Diomidis Michalopoulos
Sayed Ali MARANDI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Technologies Oy
Original Assignee
Nokia Technologies Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Technologies Oy filed Critical Nokia Technologies Oy
Publication of WO2026028040A1 publication Critical patent/WO2026028040A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off

Definitions

  • the present application relates to an apparatus, method and computer program.
  • the present application relates measurement reporting.
  • a communication network can be seen as a facility that enables communications between two or more terminal devices or provides terminal devices access to a data network.
  • a mobile or wireless communication network is one example of a communication network.
  • a terminal device may be provided with a service or application.
  • a method performed by a user equipment comprising: receiving, from a first cell that is serving the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level; performing measurements on a second cell that is a candidate for handover; determining whether a condition of the at least one condition has been triggered based on: the measurements, and the respective value associated with the at least one of: the respective service, or the respective coverage enhancement level; and based on the determining that the condition has been triggered, sending a measurement report to the first cell, wherein the measurement report is related to the second cell.
  • an user equipment comprising: at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the user equipment to perform: receiving, from a first cell that is serving the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level; performing measurements on a second cell that is a candidate for handover; determining whether a condition of the at least one condition has been triggered based on: the measurements, and the respective value associated with the at least one of: the respective service, or the respective coverage enhancement level; and based on the determining that the condition has been triggered, sending a measurement report to the first cell, wherein the measurement report is related to the second cell.
  • a computer program comprising instructions, which when executed by a user equipment, cause the user equipment to perform at least the following: receiving, from a first cell that is serving the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level; performing measurements on a second cell that is a candidate for handover; determining whether a condition of the at least one condition has been triggered based on: the measurements, and the respective value associated with the at least one of: the respective service, or the respective coverage enhancement level; and based on the determining that the condition has been triggered, sending a measurement report to the first cell, wherein the measurement report is related to the second cell.
  • a user equipment comprising: circuitry configured to perform: receiving, from a first cell that is serving the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level; circuitry configured to perform: performing measurements on a second cell that is a candidate for handover; circuitry configured to perform: determining whether a condition of the at least one condition has been triggered based on: the measurements, and the respective value associated with the at least one of: the respective service, or the respective coverage enhancement level; and circuitry configured to perform: based on the determining that the condition has been triggered, sending a measurement report to the first cell, wherein the measurement report is related to the second cell.
  • the user equipment is further caused to perform: based on determining that the condition has not been triggered, refraining from sending the measurement report to the first cell.
  • the value is associated with the respective service and wherein the respective service is associated with at least one respective coverage enhancement level.
  • the user equipment is further caused to perform: determining, based on the measurements performed on the second cell, a coverage enhancement level of the user equipment at the second cell, wherein the determining whether the condition has been triggered is based on the determined coverage enhancement level of the user equipment at the second cell.
  • the at least one condition comprises a plurality of values.
  • each of the plurality of values is associated with a different coverage enhancement level for the respective service.
  • the configuration identifies the respective service based on at least one of: a QoS indicator value, a QoS flow identifier, a service type, a resource type, a data rate or a data burst volume.
  • the user equipment is further caused to perform: when the user equipment is utilizing the respective service that is being provided by the first cell and no value associated with the respective service is received, performing at least one of: refraining from sending the measurement report to the first cell, determining whether the condition has been triggered based on a default value, determining whether the condition has been triggered based on a legacy value, or determining whether the condition has been triggered based on a value defined for a service with a higher priority level than the respective service being utilized.
  • the second cell is a low power wide area cell.
  • the value comprises at least one of a: threshold value, or a hysteresis value.
  • a network entity comprising: at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the network entity to perform: sending, to the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level; and receiving a measurement report from the user equipment, wherein the measurement report is related to a second cell.
  • a computer program comprising instructions, which when executed by a network entity, cause the network entity to perform at least the following: sending, to the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level; and receiving a measurement report from the user equipment, wherein the measurement report is related to a second cell.
  • a network entity comprising: circuitry configured to perform: sending, to the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level; and circuitry configured to perform: receiving a measurement report from the user equipment, wherein the measurement report is related to a second cell.
  • the measurement report is related to a service supported at a coverage enhancement level of the user equipment at the second cell.
  • the second cell is a candidate for handover for the user equipment.
  • the value is associated with the respective service and wherein the respective service is associated with at least one respective coverage enhancement level.
  • the configuration for the at least one condition is sent to the user equipment while the user equipment is utilizing the service, the service being provided by the first cell.
  • the at least one condition comprises a plurality of values.
  • each of the plurality of values is associated with a different coverage enhancement level for the respective service.
  • the configuration identifies the respective service based on at least one of: a QoS indicator value, a QoS flow identifier, a service type, a resource type, a data rate or a data burst volume.
  • the value comprises at least one of a: threshold value, or a hysteresis value.
  • the network entity provides a first cell that is serving the user equipment.
  • a computer program comprising computer executable instructions which when executed, cause any of the methods described herein to be performed.
  • a computer product stored on a medium may cause an apparatus to perform the methods as described herein.
  • a non-transitory computer readable medium comprising program instructions, that, when executed by an apparatus, cause the apparatus to perform the methods as described herein.
  • An electronic device may comprise apparatus as described herein.
  • Fig. 1 shows an example of a communication network to which examples disclosed herein may be applied;
  • Fig. 2 shows an example of an interaction between broadband carrier and a low-power wide area (LPWA) carrier
  • Fig. 3 shows an example of an interaction between broadband carrier and a LPWA carrier
  • Fig. 4 shows a signaling procedure for part of a handover process
  • Fig. 5a shows, an example LPWA mobility scenario in a terrestrial network.
  • Fig. 5b shows, an example LPWA mobility scenario in a non-terrestrial network.
  • Fig. 6 show an example of a signalling flow diagram
  • Fig. 7 shows an example of a method of some embodiments
  • Fig. 8 shows an example of a method of some embodiments.
  • Fig. 9 shows an example of an apparatus.
  • the phrases “at least one of A or B”, “at least one of A and B”, and “A and/or B” means (A), (B), or (A and B).
  • the phrase “A, B, and/or C” means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B, and C).
  • communication within the communication network may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiple (OFDM), and/or Discrete Fourier Transform spread OFDM (DFT-s-OFDM).
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • MIMO Multiple-Input Multiple-Output
  • OFDM Orthogonal Frequency Division Multiple
  • DFT-s-OFDM Discrete Fourier Transform spread OFDM
  • network entity or “network device” or “network node” refers to a node in a communication network via which user equipment may access the network and/or which is capable of controlling radio communication and managing radio resources within a cell.
  • the network entity or network node or network device may be referred to as a base station (BS), an access point (AP) or an access node.
  • BS base station
  • AP access point
  • the network device or network entity may be, depending on the applied technology, for example, a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), an NR NB (also referred to as a gNB), a Remote Radio Unit (RRU), a radio head (RH), a remote radio head (RRH), a relay, an Integrated Access and Backhaul (IAB) node, a low power node, a non-terrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, or an aircraft network device.
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • NR NB also referred to as a gNB
  • RRU Remote Radio Unit
  • RH radio head
  • RRH remote radio head
  • IAB Integrated Access and Backhaul
  • low power node a non-
  • RLC radio link control
  • MAC medium access control
  • PHY physical
  • PDCP packet data convergence protocol
  • RRC radio resource control
  • IP internet protocol
  • terminal device refers to any end device that may be capable of wireless communication.
  • a terminal device may be referred to as a communication device, user equipment (UE), a Subscriber Station (SS), or a Mobile Station (MS).
  • the terminal device may include a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones a tablet, a wearable terminal device, a personal digital assistant (PDA), portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, USB dongles, an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD), a vehicle, a drone, a medical device and applications (e.g., remote surgery), an industrial device and applications (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain contexts), a consumer electronics device, a device operating on commercial and/
  • a term “resource”, as used herein, may refer to radio resources in time domain, in frequency domain, in space domain, and/or in code domain. Some examples of resources include e.g. a physical resource block (PRB), a radio frame, a subframe, a time slot, a subband, a frequency region, a sub-carrier, a beam, etc.
  • PRB physical resource block
  • the term “transmission” and/or “reception” may refer to wirelessly transmitting and/or receiving via a wireless propagation channel on radio resources.
  • Fig. 1 illustrates an example of a communication network to which examples disclosed herein may be applied.
  • the communication network or a cellular communication network may comprise a network node 110 providing one or more cells, such as cell 100, and a network node 112 providing one or more other cells, such as cell 102.
  • Each cell may be, e.g., a macro cell, a micro cell, femto, or a pico cell, for example.
  • the cell may define a coverage area or a service area of the corresponding access node.
  • the network node 1 10 may provide a user equipment (UE) 120 (one or more UEs) with wireless access to the communication network.
  • the wireless access may comprise downlink (DL) communication from the network node to the UE 120 and uplink (UL) communication from the UE 120 to the network node.
  • uplink channels comprise physical uplink control channel (PUCCH) for transmitting control information and physical uplink shared channel (PUSCH) for transmitting data towards the network.
  • Examples of downlink channels comprise physical downlink control channel (PDCCH) for transmitting control information and physical downlink shared channel (PDSCH) for transmitting data towards the user equipment.
  • PUCCH physical uplink control channel
  • PDSCH physical downlink shared channel
  • UEs 120, 122 There may be a plurality of UEs 120, 122 in the system. Each of them may be served by the same or by different network nodes 110, 1 12.
  • UE may be configured with dual connectivity (DC), wherein the UE, e.g. UE 120, may be connected to multiple network nodes 110, 1 12.
  • the UEs 120, 122 may communicate with each other, in case device-to-device (D2D) communication interface is established between them via a so- called sidelink (SL).
  • D2D communications may be referred to as machine-to-ma- chine, peer-to-peer (P2P) communications, or vehicle-to-vehicle (V2V), for example.
  • the network nodes may be connected to each other via an interface.
  • LTE specifications call such an interface as X2 interface.
  • An interface between an LTE node and a 5G node, or between two 5G nodes may be called Xn interface.
  • the network nodes 110 and 1 12 may be further connected via another interface to a core network 116 of the communication network.
  • the LTE specifications specify the core network as an evolved packet core (EPC), and the core network may comprise e.g. a mobility management entity (MME) and a gateway node.
  • the MME may handle mobility of terminal devices in a tracking area encompassing a plurality of cells and handle signalling connections between the terminal devices and the core network.
  • the gateway node may handle data routing in the core network and to/from the terminal devices.
  • the 5G specifications specify the core network as a 5G core (5GC).
  • the 5G core may comprise e.g. an access and mobility management function (AMF) and a user plane function/gateway (UPF) and other functions.
  • AMF access and mobility management function
  • UPF user plane function/gateway
  • the AMF may handle termination of non-access stratum (NAS) signalling, NAS ciphering & integrity protection, registration management, connection management, mobility management, access authentication and authorization, security context management.
  • NAS non-access stratum
  • the UPF node may support packet routing and forwarding, packet inspection and quality of service (QoS) handling, for example.
  • QoS quality of service
  • loT Internet of Things
  • loT categories may include massive loT, critical loT, and broadband loT.
  • Massive loT may have the widest application.
  • Use cases of massive loT may include: smart meters, asset tracking and management, fleet management, sensors, remote monitoring and smart cities, etc.
  • LPWA low power wide area
  • a LPWA network is a wireless telecommunication wide area network designed to allow long-range communication at a low bit rate between loT devices.
  • a LPWA network may be based on long-term evolution machine type communication (LTE-M) technology and/or narrowband internet of things (NB-loT) technology.
  • LTE-M long-term evolution machine type communication
  • NB-loT narrowband internet of things
  • a LPWA network may have at least one of the following characteristics: low device complexity and/or cost; low device power consumption (which may enable a long battery life e.g., of greater than 10 years); enhanced coverage compared to broadband services (for example, up to 20-25 dB enhanced coverage); support for a large number of devices; delay tolerant data transmission; and infrequent data transmissions.
  • Some advantages of providing a 6G LPWA network may include: providing a replacement technology when 4G LTE carriers are no longer supported; improving 4G LTE solutions by introducing a lightweight radio protocol; and providing a single solution to address massive loT use cases.
  • LPWA technology may be used as a fallback for a mobile broadband device.
  • a 6G LPWA carrier/cell may have an enhanced coverage compared to an enhanced mobile broad (eMBB) carrier/cell.
  • eMBB enhanced mobile broad
  • a 6G LPWA carrier may have up to 20 - 25 dB greater coverage than an eMBB carrier.
  • the LPWA carrier may support services.
  • the LPWA carrier may support basic voice, data and messaging services.
  • the LPWA carrier may be used for utilizing emergency services.
  • a UE may switch from a broadband carrier (e.g., an eMBB carrier) to a LPWA carrier (e.g. a carrier that supports loT UEs or reduced capability UEs or UE capabilities) when the broadband carrier can no longer support broadband services for the UE, for example, because the UE has moved out of coverage of the cell.
  • a broadband carrier e.g., an eMBB carrier
  • a LPWA carrier e.g. a carrier that supports loT UEs or reduced capability UEs or UE capabilities
  • the broadband carrier can no longer support broadband services for the UE, for example, because the UE has moved out of coverage of the cell.
  • the UE may use a LPWA carrier as a fallback carrier.
  • Fig. 2 shows a schematic of an example in which a UE switches from a broadband carrier 200 to a LPWA carrier 202.
  • the broadband carrier 200 is separate from the LPWA carrier 202.
  • the LPWA carrier 202 is deployed out of band to the broadband carrier 200.
  • the UE may switch to the LPWA carrier 202 so that the UE can utilize a service that is no longer supported by the broadband carrier 200 (e.g., emergency services) due to the UE’s mobility.
  • a service that is no longer supported by the broadband carrier 200 (e.g., emergency services) due to the UE’s mobility.
  • Fig. 3 shows a schematic of an example in which a UE switches from a broadband carrier 300 (e.g., an eMBB carrier) to a LPWA carrier 302.
  • the LPWA carrier 302 is deployed in-band to the broadband carrier 300.
  • in-band deployment may allow for efficient spectral usage.
  • in-band deployment may allow for efficient spectral usage in the early LPWA deployment stage where there may not be large number of LPWA devices (e.g., loT UEs or reduced capability UEs) in the system.
  • the LPWA carrier 200, 300 may support and/or be associated with one or more coverage enhancement (CE) levels. In this case, the UE may be able to access the LPWA carrier 200, 300 at an appropriate coverage enhancement level.
  • CE coverage enhancement
  • LTE-M and NB-loT may support three different CE levels that may be configured by a network.
  • Table 1 shows an example of a CE level configuration configured by a network, based on a determined Maximum Coupling Loss (MCL).
  • MCL Maximum Coupling Loss
  • the determined MCL is based on reference signal received power (RSRP) measurements performed by the UE.
  • RSRP reference signal received power
  • CE level CEO may be used by the UE at normal coverage (i.e. , by a UE experiencing a RSRP measurement above a configured threshold).
  • CE level CE1 may be used by a UE requiring up to a 10dB coverage enhancement in comparison to normal coverage.
  • CE level CE2 may be used by a UE requiring from 10 to 20 dB coverage enhancement in comparison to normal or enhanced coverage.
  • Fig. 4 shows a signaling procedure for part of a handover process.
  • a UE 400 is served by a serving cell, with source gNB 402 providing access to the serving cell.
  • the target gNB 404 may provide access to a target cell.
  • the source gNB 402 may decide to handover the UE 400 to a target gNB 404.
  • the source gNB 402 may send a handover request message to the target gNB 404.
  • the target gNB 404 may perform admission control.
  • 5G NR provides a mobility framework defining a set of mobility events and a set of associated thresholds and hysteresis.
  • the UE may report the event to the serving cell.
  • the events may include, for example:
  • Event A2 (Serving cell becomes worse than a threshold)
  • Event A3 (Neighbour cell becomes offset better than a SpCell)
  • Event A4 (Neighbour cell becomes better than a threshold)
  • Event A5 (Serving cell becomes worse than thresholdl and neighbour cell becomes better than threshold2)
  • Event B1 (Inter RAT neighbour cell becomes better than a threshold)
  • Table 2 provides a list of threshold parameters (Parameter), the range of values that can be indicated (Range), and the corresponding actual values configured for the threshold parameters (Value) associated with each of the mobility events (Event).
  • Table 2 Mobility trigger events in 5G NR with associated threshold parameters.
  • the hysteresis acts as a margin around the threshold so that the event is not triggered unnecessarily.
  • event A2 defines an event wherein measurements (e.g., RSRP, RSRQ, SINR) of the serving cell becomes worse than a configured threshold.
  • the UE may be configured with a threshold of e.g. -65dBm RSRP and a 5dB hysteresis. If the RSRP measurement of the serving cell becomes lower than -65dBm-5dB, the UE may report event A2 to the serving cell and/or may initiate a reporting interval for RSRP measurements. If the RSRP measurement of the serving cell goes beyond -65dBm+5dB, the reporting interval for RSRP measurement may be stopped.
  • the UE may provide measurement reports according to configured measurement report events regardless of a CE level of the UE at a target cell and/or a CE level associated with a service that is being utilized by the UE. Based on the measurement report, the serving cell may request handover of the service to the target cell.
  • the service to be handed over may not be supported on the CE level of the UE at the target cell.
  • the target cell may reject the handover which may result in unnecessary signaling overhead and energy consumption used for UE measurement reporting.
  • a UE accesses a LPWA cell (e.g. a cell in the network providing services to loT devices)
  • the types of services that can be supported may vary among different CE levels. For example, different services may be associated with different CE levels.
  • Table 3 shows example LPWA data rates at different coverage enhancement levels based on NB-loT technology.
  • a voice service may be supported at CEO but not at CE1 or CE2 (e.g., the AMR codec encodes voice at a minimum bit rate of 4.75 kbps at the application layer).
  • a text messaging service may be supported at all CE levels.
  • a high-definition streaming service may not be supported at all in a LPWA cell and/or at any CE level.
  • the signal strength and/or the CE level measured by the UE from the serving cell and target cells may vary with time.
  • the varied signal strength and/or CE level measurement by the UE may be due to the movement of the UE relative to the terrestrial network (TN) and/or due to the movement of the cells in a non-terrestrial network (NTN).
  • TN terrestrial network
  • NTN non-terrestrial network
  • Fig. 5a shows an example LPWA mobility scenario in a TN.
  • Fig. 5b shows an example LPWA mobility scenario in a NTN.
  • the serving cell and the target cell are shown as adjacent to each other in Figs. 5a and 5b, this is for the purpose of illustration only and it shall be understood that other cell deployments are not precluded.
  • the serving cell may partially or fully overlap (i.e., lie entirely within) the target cell.
  • the UE may be configured to trigger mobility measurement reports associated with the target cell. In this way, the serving cell may make handover decisions, based on the mobility measurement reports.
  • measurement reporting may cause signaling overhead and energy consumption even though the service to be handed over is not supported at the CE level of the UE at the target cell for handover.
  • the service is not supported at the CE level of the UE at the target cell, there may be no need to send a measurement report associated with the target cell, to the serving cell. In this way, sending a measurement report associated with the target cell may cause unnecessary signaling and energy consumption.
  • measurement reports may be sent when the UE is on the cell edge, which may require maximum transmission power and multiple repetitions being applied by the UE. In some examples, this may require further signaling overhead and energy consumption.
  • the serving cell may send handover requests to a target cell and/or the target cell performing an admission control.
  • signaling overhead may be large for NTN scenarios, where communication between cells is difficult to achieve (e.g. due to limitations of satellite base stations in terms of energy, latency, etc.).
  • Some embodiments herein may prevent a UE from triggering unnecessary mobility measurement reports. For example, some embodiments herein may prevent a UE from triggering mobility measurement reports when a desired service (e.g., a service that is being utilized by the UE) is not supported at the CE level of the UE at the target cell.
  • a desired service e.g., a service that is being utilized by the UE
  • Some embodiments herein provide an event trigger configuration for each service supported by the serving cell and/or a target cell, for determining whether to send measurement reports to the serving cell under the respective CE level of the UE at the target cell.
  • trigger thresholds are defined for services which may have restricted support at the target cell, such that the UE may not trigger a measurement report when the service is not supported at a determined CE level of the UE at the target cell.
  • the trigger threshold may be set higher and/or may be undefined such that the event is not triggered at the determined CE level of the UE at the target cell.
  • Fig. 6 shows a schematic overview of some example embodiments.
  • Fig. 6 shows a flow diagram of a communication between a UE 600, a first cell 602 and a second cell 604.
  • the first cell 602 is a serving cell (e.g., a cell that is serving the UE 600).
  • a network entity provides the first cell 602.
  • the second cell 604 is a candidate cell for handover.
  • the second cell 604 is candidate cell for fallback, including fallback handover.
  • the second cell 604 is a neighbor cell.
  • the second cell 604 is a target cell.
  • the second cell 604 is a LPWA cell.
  • the first cell 602 and/or the second cell 604 may determine a configuration for at least one condition related to event-based measurement reporting.
  • the first cell 602 and the second cell 604 may exchange and/or negotiate the configuration through the core network.
  • the first cell 602 and/or second cell 604 may determine at least one measurement reporting event.
  • the first cell 602 and/or second cell 604 may define the configuration for at least one condition related to event-based measurement reporting.
  • condition related to event-based measurement reporting
  • (measurement reporting) event may be used interchangeably.
  • each condition comprises one or more values.
  • the value(s) may be associated with at least one of: a respective service, or a respective CE level.
  • the value comprises at least one of a: threshold value, or a hysteresis value.
  • a condition may be associated with and/or comprise a respective triggering threshold and/or hysteresis for a service supported by the first cell 602.
  • each condition may be associated with a respective triggering threshold and/or hysteresis for one or more CE levels.
  • the threshold value may comprise at least one of: a RSRP value, a RSRQ value, or a SINR value.
  • each value is associated with a different CE level.
  • each value associated with a service is associated with at least one CE level.
  • the first cell 602 may send the configuration for the condition(s) related to event-based measurement reporting, to the UE 600.
  • the second cell 604 may send the configuration to the UE 600.
  • the second cell 604 may send the configuration via a broadcast signal e.g., a system information block (SIB).
  • SIB system information block
  • the configuration for the condition(s) is received by the UE 600 while the UE 600 is utilizing a service.
  • the configuration for a condition comprising a value associated with service#1 is received by the UE 600 while the UE 600 is utilizing service#"! .
  • the service is provided to the UE 600 by the first cell 602.
  • the UE 600 determines the CE level of the UE 600 at the second cell 604. In some examples, the UE 600 determines the CE level of the UE 600 at the second cell 604 based on the measurements performed on the second cell in S603.
  • the UE 600 determines whether the service is associated with the determined CE level of the UE 600 at the second cell 604. For example, the UE 600 may determine whether the CE level(s) associated with the service being utilized by the UE matches the determined CE level of the UE 600 at the second cell 604. For example, the UE 600 determines whether the service being utilized by the UE 600 is supported at the CE level of the UE 600 at the second cell.
  • the UE 600 may refrain from sending a measurement report to the first cell 602.
  • the UE 600 may send a measurement report to the first cell 602.
  • the measurement report is related to the second cell 604.
  • the measurement report is related to a service supported at a CE level of the UE 600 at the second cell 604.
  • the UE 600 may refrain from sending a measurement report to the first cell 602.
  • a configuration may be associated with a single service (e.g., only service S1 ).
  • S2 as example, if the UE 600 receives the above configuration and is utilizing service S2, the UE 600 may perform measurements on a second cell 604. Based on said measurements, the UE 600 may determine the CE level of the UE 600 at the second cell 604. In an example where the CE level of the UE 600 at the second cell is determined as CE2, the UE 600 may refrain from sending a measurement report, related to the second cell 604, to the first cell 602.
  • the UE 600 may determine whether condition E1 is triggered, based on at least one of: the measurements performed on the second cell 604, or the threshold value t2 and/or the hysteresis value h2. If condition E1 is triggered, the UE 600 may send a measurement report related to the second cell 604, to the first cell 602. If condition E1 is not triggered, the UE 600 may refrain from sending a measurement report, related to the second cell 604, to the first cell 602.
  • the configuration determined by the first cell 602 and/or the second cell 604, as described at S601 may be provided by the first cell 602 and/or the second cell 604 to the UE 600 as an extension of an existing measurement report event with a configured value, e.g., a threshold, for a specific service.
  • the configuration may be provided for event B2 of an inter-RAT handover from a regular broadband cell to a LPWA cell, or for event A5 of an intra-RAT handover from one LPWA cell to another LPWA cell.
  • a new measurement reporting event may be defined specifically for a LPWA cell, with triggering thresholds defined for each CE level and/or service.
  • the first cell 602 may define thresholds for a subset of the events.
  • the first cell 602 may define threshold for only A events and not B events.
  • legacy event thresholds (which may be independent of service type and CE level) may be applicable when no overriding (per service and/or CE level) thresholds are configured.
  • the new measurement reporting event may override the legacy measurement reporting event. For example, if the UE is configured with legacy measurement events and with separate per service measurement reporting events, the UE may decide whether to provide the measurement report based on whether the per service event is triggered.
  • the configuration may be defined to identify a service.
  • the configuration may identify a service based on, QoS indicator values (e.g., 5QI), a QoS flow identifier (e.g., associated with the established radio bearers or PDU sessions), service types (e.g., push-to-talk voice, conversational voice, emergency call, text messaging, buffered or live streaming), resource type (e.g., GBR, non- GBR, or delay critical GBR), data rate or data burst volume.
  • QoS indicator values e.g., 5QI
  • a QoS flow identifier e.g., associated with the established radio bearers or PDU sessions
  • service types e.g., push-to-talk voice, conversational voice, emergency call, text messaging, buffered or live streaming
  • resource type e.g., GBR, non- GBR, or delay critical GBR
  • data rate or data burst volume e.g., data burst volume.
  • the first cell 602 may configure the UE 600 with a default triggering behavior, for example, in case a configuration is not provided for a service on a determined CE level of the UE 600 at the second cell.
  • the default triggering behavior may be embedded in the configuration provided by the first cell 602.
  • the default triggering behavior may indicate that the UE 600 is to always refrain from sending a measurement report when a condition is not defined for a service associated with a CE level that matches the CE level of the UE 600 at the second cell. For example, when the UE 600 is utilizing a service that is being provided by the first cell 602 and no value associated with the service is received, the UE 600 may refrain from sending a measurement report to the first cell 602.
  • the default triggering behavior may indicate default trigger threshold values which may apply to default and/or undefined services. This may be defined in a case where the configuration is provided as an additional event for LPWA cells.
  • the default triggering behavior may indicate that the threshold values of legacy events may be applied by default when a specific threshold configuration is not provided for the service.
  • a QoS parameter of a service defined in the configuration may be compared with the QoS parameter of the service being utilized by the UE 600. For example, if the priority level of the service being utilized (e.g., based on a 5QI value, where the lower the level the higher is the priority) is lower than at least one of the priority levels of the services defined in the configuration, the configuration of the service defined in the configuration with the next highest priority level may be used.
  • the priority level of the service being utilized e.g., based on a 5QI value, where the lower the level the higher is the priority
  • the configuration of the service defined in the configuration with the next highest priority level may be used.
  • the first cell 602 may provide different measurement reporting event configurations for loT UEs and for broadband UEs.
  • broadband UEs may operate in fallback mode in the LPWA cell.
  • providing different configurations for different UE types may distinguish how different types of UEs perform measurement reports.
  • the configuration for broadband UEs may indicate that the broadband UEs are permitted to use an LPWA cell as fallback (e.g., to avoid degrading the performance of loT UEs), or vice-versa.
  • the configuration for loT UEs may indicate that, by default, the loT UEs support all loT services at any CE level, while the configuration for broadband UEs may indicate that measurement reporting is triggered only for emergency call or text messaging services.
  • the first cell 602 may configure the UE 600 with a limit for how many times or for how long the UE 600 can refrain from sending a measurement report. For example, if the UE 600 has refrained from sending a measurement report for a number of times (e.g., because the UE 600 has determined that the CE level of the UE at second cell 604 does not support the service being utilized by the UE 600 that is more than a configured limit, then the UE 600 may send a measurement report if a legacy event is triggered.
  • the first cell 602 may provide configurations which allows the UE 600 to send measurement reports including the CE level information which the UE determines for the second cell 604.
  • the Handover Request message which the first cell 602 sends to the second cell 604, may indicate the CE levels of the UE 600 at the first and second cell. This indication may be in addition to the PDU sessions and/or the service requirements associated to the PDU sessions.
  • the second cell may determine whether there should be a handover. The second cell may then send the first cell 602 a list of accepted and failed PDU Sessions in the Handover Request Acknowledgment.
  • the UE 600 may evaluate the fallback mode it deploys based on the determined CE level of the UE 600 at the second cell 604. For example, in an emergency situation of low coverage, at least some service connectivity needs to be maintained with the network, even if the service that was supported by the first cell during the handover is not supported by the CE level of the UE at the second cell.
  • the UE 600 may be configured with a sorted list of subservices associated with a service (e.g., an emergency communication service).
  • Subservices may include: an emergency 91 1 call; a push-to-talk over cellular (PoC) with a dispatched center; or texting an emergency number with emergency location service (ELS).
  • PoC push-to-talk over cellular
  • ELS emergency location service
  • the UE 600 may determine the CE level at the second cell 604. If the 91 1 call service is not supported at the second cell (e.g., as the determined CE level of the UE 600 at the second cell is CE2), this may trigger one of the emergency sub-services (e.g., ELS) that can be supported by the determined CE level. In this case, the UE 600 may use the configuration defined for the new (sub)-service (e.g., ELS) for handover.
  • ELS emergency sub-service
  • the UE 600 may determine its capacity to complete an emergency service upon being served by a second cell 604 at a lower CE level than the first cell. For example, a UE 600 sending text updates with location information as part of ELS may determine a CE level at the second cell that supports additional emergency sub-services (e.g., 91 1 call), such that a new sub-service (e.g., emergency voice call) may be triggered.
  • additional emergency sub-services e.g., 91 1 call
  • An advantage of some embodiments herein enables reduced measurement reporting overhead for UEs. For example, reduced measurement reporting overhead for UEs in mobility situations in LPWA networks. In some examples, this advantage may be beneficial for broadband UEs using LPWA as fallback and/or for LPWA loT devices which may require lean signalling for low complexity and energy saving.
  • At least one of the measurement reporting step at S402, the handover decision at S403, the handover request message at S404, the admission control step at S405 and/or the handover request acknowledge message at S406 may not occur. In this way, signaling overhead and/or energy consumption may be reduced,
  • Fig. 7 shows a method of some example embodiments.
  • the apparatus may comprise suitable means, such as circuitry for providing the method.
  • the apparatus may comprise at least one processor and at least one memory storing instructions that, when executed by the at least one processor cause the apparatus at least to provide the method below.
  • the apparatus may be such as discussed in relation to FIG. 9.
  • the method may be computer-implemented.
  • the method may be provided by computer program code or computer executable instructions.
  • the method may comprise, as referenced at S701 , receiving, from a first cell that is serving the user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level.
  • the method may comprise, as referenced at S702, performing measurements on a second cell that is a candidate for handover.
  • the method may comprise, as referenced at S703, determining whether a condition of the at least one condition has been triggered based on: the measurements, and the respective value associated with the at least one of: the respective service, or the respective coverage enhancement level.
  • the method may comprise, as referenced at S704, based on the determining that the condition has been triggered, sending a measurement report to the first cell, wherein the measurement report is related to the second cell.
  • Fig. 8 shows a method of some example embodiments.
  • This method may be performed by an apparatus.
  • the apparatus may comprise or be a network entity.
  • the network entity provides a first cell that is serving a user equipment.
  • the apparatus may comprise suitable means, such as circuitry for providing the method.
  • the apparatus may comprise at least one processor and at least one memory storing instructions that, when executed by the at least one processor cause the apparatus at least to provide the method below.
  • the apparatus may be such as discussed in relation to FIG. 9.
  • the method may be computer-implemented.
  • the method may be provided by computer program code or computer executable instructions.
  • the method may comprise, as referenced at S801 , sending, to a user equipment, a configuration for at least one condition related to event-based measurement reporting, wherein each of the at least one condition comprises a value, the value being associated with at least one of: a respective service, or a respective coverage enhancement level.
  • the method may comprise, as referenced at S802, receiving a measurement report from the user equipment, wherein the measurement report is related to a second cell.
  • Fig. 9 shows, by way of example, a block diagram of an apparatus 10.
  • the apparatus 10 comprises, for example, at least one processor 12 and at least one memory 14 storing instructions 15 that, when executed by the at least one processor, cause the apparatus 10 at least to perform the method or methods as disclosed herein, and any of the embodiments thereof.
  • the at least one memory and the instructions e.g. a computer program code, software
  • the at least one processor are configured, with the at least one processor, to cause the apparatus 10 to perform the method or methods as disclosed herein, and any of the embodiments thereof.
  • a processor 12 may comprise circuitry, or be constituted as circuitry or circuitries, the circuitry or circuitries being configured to perform phases of methods in accordance with example embodiments described herein.
  • circuitry may refer to one or more or all of the following: (a) hardware-only circuit implementations, such as implementations in only analog and/or digital circuitry, and (b) combinations of hardware circuits and software, such as, as applicable: (I) a combination of analog and/or digital hardware circuit(s) with software/fi rmware and (ii) any portions of hardware processor(s) with software (including digital signal processors)), software, and memory(ies) that work together to cause an apparatus, such as a user equipment, to perform various functions) and (c) hardware circuit(s) and or processors), such as a microprocessors) or a portion of a microprocessors), that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.
  • firmware firmware
  • circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
  • the memory 14 may be implemented using any suitable data storage technology.
  • the memory may comprise a database for storing data.
  • the memory 14 may be at least in part external to apparatus 10 but accessible to apparatus 10.
  • the instructions 15 may be comprised in a computer readable medium or a non-transitory computer readable medium.
  • a term non-transitory, as used herein, is a limitation of the medium itself (i.e. tangible, not a signal) as opposed to a limitation on data storage persistency (e.g. random access memory, RAM, vs. read only memory, ROM).
  • the apparatus 10 is a terminal device, such as the UE of Fig. 6.
  • the apparatus is comprised in such a terminal device, e.g. as a chipset configured to control the terminal device.
  • the apparatus 10 may be caused or configured to perform at least the method of Fig. 7 and/or any one or more of the embodiments described.
  • the apparatus 10 is a network entity that provides the first cell of Fig. 6.
  • the apparatus is comprised in such a network entity e.g. as a chipset configured to control the network entity.
  • the apparatus 10 may be caused or configured to perform at least the method of Fig. 8 and/or any one or more of the embodiments described.
  • the apparatus may comprise one or more entities of any of protocol layers, such as a MAC entity, an RRC entity, an RLC entity, a PDCP entity or a PHY entity.
  • the entity is configured to perform at least the method of Fig. 7 or Fig. 8, and/or any one or more of the embodiments described.
  • the apparatus 10 comprises a radio interface 16.
  • the radio interface 16 may provide the apparatus 10 with communication capabilities.
  • the radio interface 16 may comprise a receiver configured to receive information in accordance with at least one cellular or non-cellular standard.
  • the radio interface 16 may comprise a transmitter configured to transmit information in accordance with at least one cellular or non-cellular standard.
  • the receiver may comprise more than one receiver.
  • the transmitter may comprise more than one transmitter.
  • the radio interface 16 may comprise a transceiver configured to receive and transmit information in accordance with at least one cellular or non-cellular standard.
  • the transceiver may comprise more than one transceiver.
  • the apparatus 10 may comprise a user interface 18 comprising, for example, at least one of a keypad, a microphone, a touch display, a display, a speaker, etc.
  • the user interface 18 may be used to control the apparatus by the user.
  • the user interface 18 may be external to the apparatus 10.
  • the apparatus 10 may be connected to another device, such as a computer, either via wireless or wired connection, and the apparatus 10 is controlled by the user via the computer.
  • At least some of the processes described herein may be carried out by an apparatus comprising means for carrying out at least some of the described processes.
  • Means for performing method steps as disclosed herein may include software and/or hardware components of the apparatus 10.
  • the at least one processor 12, the memory 14, and the computer program code form means for carrying out the method or methods as disclosed herein, and any of the embodiments thereof.
  • the term “means” is to be construed in singular form, i.e. referring to a single element, or in plural form, i.e. referring to a combination of single elements.
  • terminology “means for [performing A, B, C]”, is to be interpreted to cover an apparatus in which there is only one means for performing A, B and C, or where there are separate means for performing A, B and C, or partially or fully overlapping means for performing A, B, C.
  • terminology “means for performing A, means for performing B, means for performing C” is to be interpreted to cover an apparatus in which there is only one means for performing A, B and C, or where there are separate means for performing A, B and C, or partially or fully overlapping means for performing A, B, C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un équipement utilisateur comprenant : des moyens pour recevoir, en provenance d'une première cellule qui dessert l'équipement utilisateur, une configuration pour au moins une condition liée à un rapport de mesure basé sur un événement, chacune de la ou des conditions comprenant une valeur, la valeur étant associée à au moins l'un parmi : un service respectif, ou un niveau d'amélioration de couverture respectif ; des moyens pour effectuer des mesures sur une seconde cellule qui est un candidat pour un transfert ; des moyens pour déterminer si une condition de ladite ou desdites conditions a été déclenchée sur la base des mesures et de la valeur respective associée audit service respectif ou au niveau d'amélioration de couverture respectif ; et des moyens pour, sur la base de la détermination que la condition a été déclenchée, envoyer un rapport de mesure à la première cellule, le rapport de mesure étant associé à la seconde cellule.
PCT/IB2025/057537 2024-07-31 2025-07-24 Procédé, appareil et programme informatique de rapport de mesure basé sur un événement de cellules cibles Pending WO2026028040A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2411238.5A GB2643062A (en) 2024-07-31 2024-07-31 Method, apparatus and computer program
GB2411238.5 2024-07-31

Publications (1)

Publication Number Publication Date
WO2026028040A1 true WO2026028040A1 (fr) 2026-02-05

Family

ID=92633628

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2025/057537 Pending WO2026028040A1 (fr) 2024-07-31 2025-07-24 Procédé, appareil et programme informatique de rapport de mesure basé sur un événement de cellules cibles

Country Status (2)

Country Link
GB (1) GB2643062A (fr)
WO (1) WO2026028040A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3057464A1 (fr) * 2017-03-22 2018-09-27 Comcast Cable Communications, Llc Procede d'acces aleatoire dans une nouvelle radio
US20190021021A1 (en) * 2016-01-13 2019-01-17 Telefonaktiebolaget L M Ericsson (Publ) Adapting measurement procedure of nb-iot
WO2022028229A1 (fr) * 2020-08-06 2022-02-10 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil pour effectuer une mesure associée à une ressource

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3370451B1 (fr) * 2014-01-30 2019-10-23 NEC Corporation Terminal machine-machine (m2m), station de base, procédé et support lisible par ordinateur
US11051193B2 (en) * 2015-07-22 2021-06-29 Qualcomm Incorporated Configurable measurement gap and window for machine type communications
US11700555B2 (en) * 2015-08-14 2023-07-11 Qualcomm Incorporated Mobility design for eMTC

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190021021A1 (en) * 2016-01-13 2019-01-17 Telefonaktiebolaget L M Ericsson (Publ) Adapting measurement procedure of nb-iot
CA3057464A1 (fr) * 2017-03-22 2018-09-27 Comcast Cable Communications, Llc Procede d'acces aleatoire dans une nouvelle radio
WO2022028229A1 (fr) * 2020-08-06 2022-02-10 Telefonaktiebolaget Lm Ericsson (Publ) Procédé et appareil pour effectuer une mesure associée à une ressource

Also Published As

Publication number Publication date
GB2643062A (en) 2026-02-04
GB202411238D0 (en) 2024-09-11

Similar Documents

Publication Publication Date Title
CN116325870B (zh) 用于管理ml处理模型的方法和装置
US10701751B2 (en) Signaling for multiple radio access technology dual connectivity in wireless network
CN119893574A (zh) 在用户设备ue、基站处进行无线通信的方法和装置
CN115443734A (zh) 避免同时的有条件切换和有条件主scg小区改变
US11419018B2 (en) Anchor management for dual connectivity devices
CN112788788A (zh) 用于快速单dci和多dci模式切换的系统和方法
US11621982B1 (en) Seamless voice call initiation
CN119631370A (zh) 用于空间波束预测的标称csi-rs配置
WO2020089511A1 (fr) Réduction d'interruption de transfert avec deux émetteurs et récepteurs
CN119137877A (zh) 波束相关预测的基于事件的报告
US12010628B2 (en) Power-efficient measurement reporting for multi/dual connectivity in cellular communication networks
WO2024092605A1 (fr) Procédés et appareil de rapport de mesure de couche physique amélioré dans des communications sans fil
WO2026028040A1 (fr) Procédé, appareil et programme informatique de rapport de mesure basé sur un événement de cellules cibles
WO2025129588A1 (fr) Commutation autonome de partie de bande passante
WO2025261581A1 (fr) Prise en charge d'un service de débit binaire extrême
WO2026068357A1 (fr) Procédé et appareil de rapport de mesure de mobilité déclenchée par couche inférieure (ltm)
WO2026068352A1 (fr) Procédé et appareil d'établissement de rapport de mesure de mobilité déclenchée par couche inférieure (ltm)
WO2026068355A1 (fr) Procédé et appareil de rapport de mesure de mobilité déclenchée par couche inférieure (ltm)
WO2026074334A1 (fr) Procédé et appareil de gestion de faisceau et d'interfonctionnement de rapport basé sur un événement de mobilité déclenchée par couche 1/couche 2 (ltm)
WO2026074399A1 (fr) Rapport déclenché par un événement pour mobilité déclenchée par couche 1/couche 2 (ltm)
WO2026002485A1 (fr) Prise en charge d'un service de débit binaire extrême
WO2026068354A1 (fr) Procédé et appareil d'établissement de rapport de mesure de mobilité déclenchée par couche inférieure (ltm)
WO2025256810A1 (fr) Appareil, procédé et programme informatique
WO2026002486A1 (fr) Prise en charge d'un service de débit binaire extrême
GB2624149A (en) Use of estimated arrival probability-related information to select target secondary nodes for early data forwarding for dual connectivity wireless communicati

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25754295

Country of ref document: EP

Kind code of ref document: A1