Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
  • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • 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
  • H04W36/00835—Determination of neighbour cell lists
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W36/00—Hand-off or reselection arrangements
  • H04W36/08—Reselecting an access point

Definitions

• the present application relates generally to an apparatus and a method for cell confusion avoidance.
• LTE is a standard for wireless communication that seeks to provide improved speed and capacity for wireless communications by using new modulation/ signal processing techniques.
• the standard was proposed by the 3GPP. Since its inception, LTE has seen extensive deployment in a wide variety of contexts involving the communication of data. In recent years, the exponential growth of smartphones and the traffic they generate have become a major challenge of the industry. 3GPP has been continuing to alleviate this challenge by enhancing LTE standards to further improve capacity and performance and introducing improvements for system robustness.
• 3GPP 5G or NG system may support a number of use cases and features. These use cases are, but not limited to: eMBB and URLLC, as well as mMTC.
• 5G is mostly built on a NR, but a 5G (or NG) network can also build on LTE radio.
• NR is expected to deliver extreme broadband and ultra- robust, low latency connectivity and massive networking to support the loT. With loT and M2M communication becoming more widespread, there will be a growing need for designs that meet the needs of lower power, high data rate, and long battery life.
• the nodes that can provide radio access functionality to a user equipment may be named gNB when built on NR radio and may be named NG-eNB when built on LTE radio.
• a disaggregated architecture is defined in the 3GPP standard as a decomposition of a gNB into multiple logical entities, including a central unit, CU, and distributed units, DUs.
• a single DU may host multiple cells.
• the CU itself is split into a control plane component, CU-CP, and a user plane component, CU-UP.
• the CU-CP is connected to the CU-UP via an El connection
• the DUs are connected to the CU-CP via a Fl-C connection
• the DUs are connected to the CU-UP via a Fl-U connection.
• a method includes by a network element (NE), receiving from a second NE a list of cells that are neighbours of the cells the NE controls, including cells outside the NE; receiving a measurement report on a cell from a UE; and determining whether the cell measured and reported by UE is out of the NE.
• NE network element
• an apparatus includes at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to by a network element (NE), receive from a second NE a list of cells that are neighbours of the cells the NE controls, including cells outside the NE; receive a measurement report on a cell from a UE; and determine whether the cell measured and reported by UE is out of the NE.
• a network element NE
• an apparatus includes means for, by a network element (NE), receiving from a second NE a list of cells that are neighbours of the cells the NE controls, including cells outside the NE; means for, by the NE, receiving a measurement report on a cell from a UE; and means for, by the NE, determining whether the cell measured and reported by UE is out of the NE.
• a network element NE
• a computer program product including a non- transitory computer-readable storage medium and storing executable code that, when executed by at least one apparatus, is configured to cause the at least one apparatus to perform a method including by a network element (NE), receiving from a second NE a list of cells that are neighbours of the cells the NE controls, including cells outside the NE; receiving a measurement report on a cell from a UE; and determining whether the cell measured and reported by UE is out of the NE.
• a network element NE
• a method includes by a network element (NE), sending to a second NE a list of cells that are neighbours of the cells the second NE controls, including cells outside the second NE; receiving a measurement report on a cell from a UE or the second NE; and triggering a handover of the UE to a cell identified in the measurement report.
• NE network element
• an apparatus includes at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to by a network element (NE), send to a second NE a list of cells that are neighbours of the cells the second NE controls, including cells outside the second NE; receive a measurement report on a cell from a UE or the second NE; and trigger a handover of the UE to a cell identified in the measurement report.
• a network element NE
• an apparatus includes means for, by a network element (NE), sending to a second NE a list of cells that are neighbours of the cells the second NE controls, including cells outside the second NE; means for, by the NE, receiving a measurement report on a cell from a UE or the second NE; and means for, by the NE, triggering a handover of the UE to a cell identified in the measurement report.
• a network element NE
• a computer program product including a non- transitory computer-readable storage medium and storing executable code that, when executed by at least one apparatus, is configured to cause the at least one apparatus to perform a method including by a network element (NE), sending to a second NE a list of cells that are neighbours of the cells the second NE controls, including cells outside the second NE; receiving a measurement report on a cell from a UE or the second NE; and triggering a handover of the UE to a cell identified in the measurement report.
• NE network element
• a method includes by a user equipment (UE), sending a measurement report on a cell to a NE; receiving an indication from the NE indicating that the measured cell does not belong to the NE; sending the measurement report to a second NE; and receiving a handover command to handover to a cell identified in the measurement report.
• UE user equipment
• an apparatus includes at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to by a user equipment (UE), send a measurement report on a cell to a NE; receive an indication from the NE indicating that the measured cell does not belong to the NE; send the measurement report to a second NE; and receive a handover command to handover to a cell identified in the measurement report.
• UE user equipment
• an apparatus includes means for, by a user equipment (UE), sending a measurement report on a cell to a NE; means for, by the UE, receiving an indication from the NE indicating that the measured cell does not belong to the NE; means for, by the UE, sending the measurement report to a second NE; and means for, by the UE, receiving a handover command to handover to a cell identified in the measurement report.
• UE user equipment
• a computer program product including a non- transitory computer-readable storage medium and storing executable code that, when executed by at least one apparatus, is configured to cause the at least one apparatus to perform a method including by a user equipment (UE), sending a measurement report on a cell to a NE; receiving an indication from the NE indicating that the measured cell does not belong to the NE; sending the measurement report to a second NE; and receiving a handover command to handover to a cell identified in the measurement report.
• UE user equipment
• Figure 1 illustrates an example communication system in which various example embodiments of the application implement.
• Figure 2 is a diagram illustrating a disaggregated gNB architecture according to an example embodiment.
• Figure 3 describes an example scenario where multiple cells share the same PCI according to an example embodiment.
• Figure 4 describes a message flow according to an example embodiment.
• Figure 5 describes a block diagram for some operation of a NE according to an example embodiment.
• Figure 6 describes a block diagram for some operation of a NE according to another example embodiment.
• Figure 7 describes a block diagram for some operation of a UE according to an example embodiment.
• Figure 8 illustrates a simplified block diagram of various example apparatuses that are suitable for use in practicing various example embodiments of this application.
• FIG. 1 illustrates an example communication system 100 in which various embodiments of the application can be implemented.
• the example communication system 100 comprises a NE, 101, such as for example, an AP, an eNB, a gNB or a NG-eNB connecting to a core network that is not shown for brevity. Part of the functionalities of the NE 101 may be also carried out by any node, server or host which may be operably coupled to a transceiver, such as a remote radio head.
• NE 101 provides wireless coverage within a cell 103, including the UEs 102, 104 and 106. Although just one NE, one cell, and three UEs are shown in Figure 1, it is only for the purpose of illustration and the example communication system 100 may comprise any number of NE(s), cell(s), and UE(s).
• the various example implementations may be applied to a wide variety of wireless technologies, wireless networks, such as LTE, LTE-A, 5G (New Radio, or NR), cmWave, and/or mmWave band networks, or any other wireless network or use case.
• LTE, 5G, cmWave and mmWave band networks are provided only as illustrative examples, and the various example implementations may be applied to any wireless technology/wireless network.
• the various example implementations may also be applied to a variety of different applications, services or use cases, such as, for example, URLLC, loT, TSC, eMBB, MMTC, V2V, V2D, etc. Each of these use cases, or types of UEs, may have its own set of requirements.
• a disaggregated architecture is defined in the 3GPP standard as a decomposition of a gNB into multiple logical entities.
• Figure 2 illustrates such an architecture 200, in which a gNB, such as for example, the NE 101 of Figure 1, has a CU and DUs.
• the CU itself is split into a control plane component, CU-CP, and a user plane component, CU-UP.
• the CU-CP is connected to the CU-UP via an El connection
• the DUs are connected to the CU-CP via a Fl-C connection
• the DUs are connected to the CU-UP via a Fl-U connection.
• a DU may host multiple cells up to a maximum of 512 according to current 3GPP specifications. Accordingly, serving cell change between cells may be considered intra-DU for a serving cell change between cells of the same DU, and inter-DU between cells of different DUs.
• the L1/L2 mobility is a new feature being studied in 3GPP. With this feature, the change of serving cell of the UE is not managed by the CU but by the DU. The CU may not be involved in the UE mobility inside the cells controlled by the DU.
• an UE such as for example, the UE 102, 104 or 106 of Fig. 1, may know the list of cells belonging to the DU (with their cell ID such as for example, PCI).
• the UE may send the measurement performed on a neighboring cell either to DU via L1/L2 signaling if the cell belongs to the DU (case 1), or to CU via L3 signaling if otherwise (case 2).
• DU may trigger L1/L2 mobility for the UE.
• the UE changes cell but gNB CU is not involved in the handover / change of cell.
• the gNB CU can take care of the handover to the cell that does not belong to the DU, via a handover procedure.
• two cells, Cl and C2 share the same PCI, for example, PCI1.
• One of them (Cl) is controlled by the considered DU 301 and the other one (C2) is outside the considered DU 301.
• the two cells are geographically separated so that a UE may not be able to see the two cells at the same time.
• Cl is neighbor of C4 and C2 is neighbor of C3.
• C3 and C4 are also controlled by the considered DU 301.
• the de-ambiguation of the cells may be done using the current serving cell (and possibly measurement on other cells).
• the ID of the serving cell may tell if the measured cell is Cl or C2. For example, in Figure 3, if the serving cell is C3 the measured cell with PCI1 is C2, and if the serving cell is C4 the measured cell with PCI1 is Cl.
• the UE may not be able to distinguish by itself whether the measured cell is Cl or C2, because it doesn’t have the neighboring relations between Cl and C4, and between C2 and C3. Therefore, it may happen that UE measures C2 but thinks it is Cl. In this case, UE may send the measurement to DU 301.
• UE does not belong to the DU 301 and the L1/L2 mobility would fail so UE may lose connection with the network.
• UE has the list of the cells belonging to DU, e.g., list of PCIs, so when UE measures a cell with a PCI that may correspond to a cell belonging to the DU, the UE may consider it a priori as a cell belonging to the DU.
• a DU such as for example, DU 301 of Figure 3 is made aware of the cells that are neighbors of cells belonging to it, and thus knows the possible cell confusion issue.
• the DU may receive from a UE, such as for example, UE 102, 104 or 106 of Figure 1, measurements associated with a specific PCI about a measured cell. If there is a possible confusion between two cells with the same PCI, the DU may determine whether the measured cell is a neighbor of the serving cell of the UE.
• a L1/L2 handover may be triggered.
• the DU may send a L1/L2 indication (for example a MAC indication) to the UE so that UE may send the measurement to a CU and the CU can then trigger a handover to the measured cell; or may send via Fl, the measurements (probably with a full cell ID that identifies the measured cell unambiguously) to the CU so that the CU can trigger the handover.
• a L1/L2 indication for example a MAC indication
• the determination of the measured cell may also be done using measurements sent by UE on other neighboring cells.
• the DU can then determine which is the measured cell by checking the possible cells UE can see when UE measures the measured cell.
• FIG. 4 A flow of procedures for a gNB DU 401, a gNB CU-CP 403 and a UE 405 according to an example embodiment is presented in Figure 4.
• a DU 401 such as for example, the DU 301 of Figure 3
• a UE 405, such as for example, UE 102, 104 or 106 of Figure 1 is assumed to be served by C3, a cell belonging to the DU 401.
• the UE is configured for L1/L2 measurements and has the list of the cells belonging to the DU 401.
• the DU 401 may receive from a CU 403 at 402 a list of cells that are neighbours of the cells the DU controls, including cells outside the DU.
• cell C2 (not belonging to the DU) is listed as a neighbor of cell C3 as shown in the example of Figure 3.
• UE 405 may send measurement made on a cell identified by a cell ID such as for example, PCI1.
• the UE has the list of cells belonging to the DU, and PCI1 is one of PCIs of the cells belonging to the DU.
• PCI1 is the PCI of cell C2 but is also the PCI of cell Cl that belongs to the DU.
• UE may assume (wrongly) that the measured cell is cell Cl and belongs to the DU, and may send the measurement to the DU via L1/L2 signalling.
• the DU at 406 may determine that the cell reported by UE is actually out of the DU based on the reported PCI and neighbouring information. For example, because the serving cell for the UE is cell C3, the DU may determine that the measured cell with PCI1 is not cell Cl but cell C2 that is a neighbor of cell C3 and is not part of the cells belonging to the DU.
• the DU may send an indication to UE at 408 via e.g., L1/L2 informing that the measured cell does not belong to the DU, as one alternative, ALT.
• the UE may send the measurement to CU 403 via e.g., L3 signalling at 410.
• the CU 403 may trigger a handover to the measured cell that is cell C2 in this example.
• the DU may forward the measurement (probably with the cell ID) to CU 403 at 414 as another alternative. Then the CU 403 may trigger a handover to the measured cell that is cell C2 in this example at 416.
• Figure 5 describes a block diagram for some operation of a NE according to an example embodiment.
• a NE such as for example, NE 101 of Figure 1, DU 301 of Figure 3, or DU 401 of Figure 4
• the list of cells may include information regarding of which cell controlled by the NE a cell outside the NE is a neighbour.
• the NE may receive a measurement report on a cell from a UE, such as for example, UE 102, 104, or 106 of Figure 1, or UE 405 of Figure 4.
• the measurement report is received via L1/L2 signaling.
• the measurement report may include a cell ID such as for example, PCI, of the measured cell.
• the NE at 503 may determine whether the cell measured and reported by UE is out of the NE. In an example embodiment, the determination is performed by using the reported cell ID and the list of neighbouring cells.
• the NE may identify a serving cell of the UE and determine whether the cell measured and reported by UE is out of the NE based on the identified serving cell.
• the NE may send an indication to UE at 504 indicating that the measured cell does not belong to the NE.
• the indication is sent via Ll/MAC signaling.
• the NE may forward the measurement report to the CU at 505.
• Figure 6 describes a block diagram for some operation of a NE according to another example embodiment.
• a NE such as for example, NE 101 of Figure 1, or CU 403 of Figure 4
• the list of cells may include information regarding of which cell controlled by the DU a cell outside the DU is a neighbour.
• the NE may receive a measurement report on a cell from a UE, such as for example, UE 102, 104, or 106 of Figure 1, or UE 405 of Figure 4.
• the measurement report is received via L3 signaling.
• the NE may receive a measurement report from the DU at 603.
• the measurement report may include a cell ID such as for example, PCI, of the measured cell, and the cell identified in the measurement report from either the UE or the DU is out of the DU.
• the NE may trigger a handover of the UE to the identified cell.
• Figure 7 describes a block diagram for some operation of a UE according to an example embodiment.
• a UE such as for example, UE 102, 104, or 106 of Figure 1, or UE 405 of Figure 4
• a NE such as for example, NE 101 of Figure 1, DU 301 of Figure 3, or DU 401 of Figure 4.
• the measurement report is sent via Ll/MAC signaling.
• the measurement report may include a cell ID, such as for example, PCI, of the measured cell.
• the UE may receive an indication from the NE at 702 indicating that the measured cell does not belong to the NE.
• the indication is received via L1/L2 signaling.
• the UE may send at 703 the measurement report to another NE such as for example, NE 101 of Figure 1, or CU 403 of Figure 4.
• the measurement report is sent via L3 signaling.
• the measurement report may include the cell ID of the measured cell.
• the UE may receive a handover command to handover to the cell identified in the measurement report.
• a network element, NE, 801 such as for example, the NE 101 of Figure 1, is adapted for communication with a UE 811, such as for example, the UE 102, 104 or 106 of Figure 1.
• the UE 811 includes at least one processor 815, at least one memory, MEM, 814 coupled to the at least one processor 815, and a suitable transceiver, TRANS, 813 (having a transmitter, TX, and a receiver, RX) coupled to the at least one processor 815.
• the at least one MEM 814 stores a program, PROG, 812.
• the TRANS 813 may include or be coupled to one or more antennas 817 and is for bidirectional wireless communications with the NE 801.
• the NE 801 includes at least one processor 805, at least one MEM 804 coupled to the at least one processor 805, and a suitable TRANS 803 (having a TX and a RX) coupled to the at least one processor 805.
• the at least one MEM 804 stores a PROG 802.
• the TRANS 803 may include or be coupled to one or more antennas 807 and is for bidirectional wireless communications with the UE 811.
• the NE 801 may be coupled to one or more cellular networks or systems, which is not shown in this figure.
• the NE 801 may further include a mobility/handover control unit 806.
• the unit 806, together with the at least one processor 805 and the PROG 802 may be utilized by the NE 801 in conjunction with various example embodiments of the application, as described herein.
• the UE 811 may further include a mobility/handover unit 816.
• the unit 816, together with the at least one processor 815 and the PROG 812, may be utilized by the UE 811 in conjunction with various example embodiments of the application, as described herein.
• apparatus 801 can include a node, host, or server in a communications network or serving such a network.
• apparatus 801 may be a network node, satellite, base station, a Node B, an evolved Node B, eNB, 5G Node B or access point, next generation Node B, NG-NB or gNB, or a WLAN access point, associated with a radio access network, such as a LTE, 5G or NR network.
• apparatus 801 may be comprised of an edge cloud server as a distributed computing system where the server and the radio node may be stand-alone apparatuses communicating with each other via a radio path or via a wired connection, or they may be located in a same entity communicating via a wired connection.
• apparatus 801 represents a gNB
• it may be configured in a central unit, CU, and distributed unit, DU, architecture that divides the gNB functionality.
• the CU may be a logical node that includes gNB functions such as transfer of user data, mobility control, radio access network sharing, positioning, or session management, etc.
• the CU may control the operation of DU(s) over a front -haul interface.
• the DU may be a logical node that includes a subset of the gNB functions, depending on the functional split option.
• a gNB may comprise multiple TRPs. It should be noted that one of ordinary skill in the art would understand that apparatus 801 may include components or features not shown in Figure 8.
• the various example embodiments of the apparatus 811 can include, but are not limited to, cellular phones, personal digital assistants having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices having wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate combinations of such functions.
• apparatus 811 may be a node or element in a communications network or associated with such a network, such as a UE, mobile equipment, ME, mobile station, mobile device, stationary device, loT device, or other device.
• a UE may alternatively be referred to as, for example, a mobile station, mobile equipment, mobile unit, mobile device, user device, subscriber station, wireless terminal, tablet, smart phone, loT device, sensor or NB-IoT device, a watch or other wearable, a head-mounted display, a vehicle, a drone, a medical device and applications thereof (e.g., remote surgery), an industrial device and applications thereof (e.g., a robot and/or other wireless devices operating in an industrial and/or an automated processing chain context), a consumer electronics device, a device operating on commercial and/or industrial wireless networks, or the like.
• apparatus 811 may be implemented in, for instance, a wireless handheld device, a wireless plug-in accessory, or the like. It should be noted that one of ordinary skill in the art would understand that apparatus 811 may include components or features not shown in Figure 8.
• the example embodiments of this disclosure may be implemented by computer software or computer program code executable by one or more of the processors 805, 815 of the NE 801 and the UE 811, or by hardware, or by a combination of software and hardware.
• At least one of the PROGs 802 and 812 is assumed to include program instructions that, when executed by the associated processor, enable the electronic apparatus to operate in accordance with the example embodiments of this disclosure, as discussed herein.
• the TRANS 803 and 813 may include, for example, a plurality of radio interfaces that may be coupled to the antenna(s) 807 and 817, respectively.
• the radio interfaces may correspond to a plurality of radio access technologies including one or more of GSM, WCDMA, NB-IoT, LTE, 5G, WLAN, Bluetooth, BT-LE, NFC, radio frequency identifier, ultrawideband, MulteFire, and the like.
• the radio interface may include components, such as filters, converters (for example, digital-to-analog converters and the like), mappers, a Fast Fourier Transform module, and the like, to generate symbols for a transmission and to receive symbols.
• TRANS 803 and 813 may be configured to modulate information on to a carrier waveform for transmission by the antenna(s) and demodulate information received via the antenna(s) for further processing by other elements of apparatus 801 and 811, respectively.
• TRANS 803 and 813 may be capable of transmitting and receiving signals or data directly.
• apparatus 801 and/or 811 may include an input and/or output device.
• the MEMs 804 and 814 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, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples.
• memory 804 and 814 can be comprised of any combination of random access memory, read only memory, static storage such as a magnetic or optical disk, hard disk drive, or any other type of non- transitory machine or computer readable media.
• the instructions stored in memory 804 or 814 may include program instructions or computer program code that, when executed by processor 805 or 815, enable the apparatus 801 or 811 to perform tasks as described herein.
• apparatus 801 or 811 may further include or be coupled to (internal or external) a drive or port that is configured to accept and read an external computer readable storage medium, such as an optical disc, USB drive, flash drive, or any other storage medium.
• an external computer readable storage medium such as an optical disc, USB drive, flash drive, or any other storage medium.
• the external computer readable storage medium may store a computer program or software for execution by processor 805/815 or apparatus 801/811.
• the processors 805 and 815 may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors, field-programmable gate arrays, applicationspecific integrated circuits, and processors based on multi-core processor architecture, as non-limiting examples. While a single processor 805 and 815 is shown in NE and UE of Figure 8, respectively, multiple processors may be utilized according to other embodiments.
• apparatus 801 or 811 may include two or more processors that may form a multiprocessor system (e.g., in this case processor 805 or 815 may represent a multiprocessor) that may support multiprocessing.
• the multiprocessor system may be tightly coupled or loosely coupled (e.g., to form a computer cluster).
• ANR UE reads the SIB of the cell and gets the full Cell ID
• Using ANR is a long procedure that would slow the handover process and may lead to Radio Link Failure if the procedure can’t be completed in time.
• Example 1 A method, comprising: by a network element (NE), receiving from a CU a list of cells that are neighbours of the cells the NE controls, including cells outside the NE; receiving a measurement report on a cell from a UE; and determining whether the cell measured and reported by UE is out of the NE.
• a network element NE
• Example 2 The method of example 1, wherein if it is determined that the cell measured and reported by UE is out of the NE, further comprising: sending an indication to the UE indicating that the measured cell does not belong to the NE.
• Example 3 The method of example 1 or 2, wherein if it is determined that the cell measured and reported by UE is out of the NE, further comprising: forwarding the measurement report, probably including a cell ID, to the CU.
• Example 4 The method of any of examples 1 to 3, wherein the list of cells may include information regarding of which cell controlled by the NE a cell outside the NE is a neighbour.
• Example 5 The method of any of examples 1 to 4, wherein the measurement report is received via L1/L2 signaling.
• Example 6 The method of any of examples 1 to 5, wherein the measurement report may include a cell ID, such as for example, PCI, of the measured cell.
• a cell ID such as for example, PCI
• Example 7 The method of example 6, wherein the determination is performed by using the reported cell ID and the list of neighbouring cells.
• Example 8 The method of any of examples 1 to 7, further comprising: identifying a serving cell of the UE, wherein the determination is based on the identified serving cell.
• Example 9 The method of any of examples 2 to 8, wherein the indication is sent via L1/L2 signaling.
• Example 10 A method, comprising: by a network element (NE), sending to a DU a list of cells that are neighbours of the cells the DU controls, including cells outside the DU; receiving a measurement report on a cell from a UE or the DU; triggering a handover of the UE to a cell identified in the measurement report.
• NE network element
• Example 11 The method of example 10, wherein the list of cells may include information regarding of which cell controlled by the DU a cell outside the DU is a neighbour.
• Example 12 The method of example 10 or 11, wherein the measurement report is received from the UE via L3 signaling.
• Example 13 The method of any of examples 10 to 12, wherein the measurement report may include a cell ID, such as for example, PCI, of the measured cell, and the cell identified in the measurement report from either the UE or the DU is out of the DU.
• a cell ID such as for example, PCI
• Example 14 A method, comprising: by a user equipment (UE), sending a measurement report on a cell to a NE; receiving an indication from the NE indicating that the measured cell does not belong to the NE; sending the measurement report to another NE; and receiving a handover command to handover to a cell identified in the measurement report.
• UE user equipment
• Example 15 The method of example 14, wherein the measurement report is sent to the NE via L1/L2 signaling.
• Example 16 The method of example 14 or 15, wherein the measurement report is sent to the other NE via L3 signaling.
• Example 17 The method of any of examples 14 to 16, wherein the measurement report sent to the NE or the other NE may include a cell ID, such as for example, PCI, of the measured cell.
• Example 18 The method of example 17, wherein the cell identified in the measurement report is out of the NE.
• Example 19 The method of any of examples 14 to 18, wherein the indication is received via L1/L2 signaling.
• Example 20 A computer program, comprising code for performing the methods of any of examples 1 to 19, when the computer program is run on a computer.
• Example 21 The computer program according to example 20, wherein the computer program is a computer program product comprising a computer-readable medium bearing computer program code embodied therein for use with the computer.
• Example 22 The computer program according to example 20, wherein the computer program is directly loadable into an internal memory of the computer.
• Example 23 An apparatus, comprising means for performing the method of any of examples 1 to 19.
• Example 24 The apparatus of example 23, wherein the means comprising: at least one processor; and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
• Example 25 A computer program product comprising a computer-readable storage medium bearing computer program code embodied therein for use with a computer, the computer program code comprising code for performing the method of any of examples 1 to 19.
• Embodiments of the present invention may be implemented in software, hardware, application logic or a combination of software, hardware and application logic.
• the software, application logic and/or hardware may reside on an apparatus such as a user equipment, a gNB or other mobile communication devices. If desired, part of the software, application logic and/or hardware may reside on a NE 801, part of the software, application logic and/or hardware may reside on a UE 811, and part of the software, application logic and/or hardware may reside on other chipset or integrated circuit.
• the application logic, software or an instruction set is maintained on any one of various conventional computer-readable media.
• a “computer-readable medium” may be any media or means that can contain, store, communicate, propagate or transport the instructions for use by or in connection with an instruction execution system, apparatus, or device.
• a computer-readable medium may comprise a non-transitory computer-readable storage medium that may be any media or means that can contain or store the instructions for use by or in connection with an instruction execution system, apparatus, or device.

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  • 2022-08-19 WO PCT/IB2022/057811 patent/WO2023026159A1/en active Application Filing
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