# US 2021/0243592 A1 · Pci configuration and mobility robustness optimization son functionality for 5g networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243592 A1 - Document ID: US20210243592A1 - Status: Published application - Kind: A1 - Application number: 17/167,522 - Filed: 2021-02-04 - Published: 2021-08-05 - Earliest claimed: 2020-02-05 - Assignees: Intel Corporation - Inventors: Joey Chou; Yizhi Yao - Web page: https://patentgrep.com/patent/US20210243592A1 ## CPC - H04W 8/26: Network addressing or numbering for mobility support - H04W 24/02: Arrangements for optimising operational condition - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Systems and methods of re-configuring PCI values for a NR cell and performing mobility robustness optimization are described. To reconfigure the PCI values. The NRM data and the PCI of candidate cells measurements are analyzed to detect a potential PCI collision or PCI confusion among NR cells. In response to detection of the potential PCI collision or confusion, a new PCI value for at least one NR cell is determined and instructions to re-configure the at least one NR cell with the new PCI value are sent to a producer of provisioning MnS. For MRO, a NF provisioning MnS with modifyMOIAttributes operation to configure MRO targets for an MRO function and to enable the MRO function for a NR cell are consumed, as is a performance assurance MnS with a notifyFileReady or reportStreamData operation to collect MRO-related performance measurements. The measurements are analyzed to evaluate MRO performance. ## Claims ### Claim 1 An apparatus for a new radio (NR) network configured to operate as a Centralized Self-Organizing Network (C-SON) function, the apparatus comprising: processing circuitry configured to: receive, from a producer of performance assurance Management Service (MnS), performance measurements and a Physical Layer Cell Identity (PCI) of candidate cells measurements for each of a plurality of NR cells; analyze network resource model (NRM) data and the PCIs to detect a potential PCI collision or PCI confusion among the NR cells; determine, in response to the detection of potential PCI collision or PCI confusion for at least one NR cell of the NR cells, a new PCI value for the at least one of the NR cells, the new PCI value selected to avoid potential PCI collision or PCI confusion among neighboring NR cells of the at least one NR cell; and send, to a producer of provisioning MnS, instructions to re-configure the at least one NR cell with the new PCI value; and a memory to store the PCI of the candidate cells measurements. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the C-SON function is configured to consume a MnS of NF provisioning with modifyMOIAttributes operation to re-configure the at least one NR cell with the new PCI value. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the C-SON function is configured to receive, from the producer of provisioning MnS, a notification notifyMOIAttributeValueChange to indicate the new PCI value being assigned to the at least one NR cell. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the processing circuitry is configured to derive the PCI of one of the candidate cells from a MeasResultNR information element (IE) that contains a PhysCellId to indicate the PCI value of the candidate cell. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the PCI of candidate cells measurements contains subcounters per PCI to indicate a number of MeasResultListNR information elements (IEs) with a PCI value being received in a granularity interval. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the processing circuitry is configured to obtain the PCI of candidate cells measurements by incrementing a subcounter corresponding to a PCI value received in a MeasResultNR IE, a total number of subcounters equaling a number of unique PCI values received in the granularity interval. ### Claim 7 (depends on 5) The apparatus of claim 5, wherein the PCI of the candidate cells measurements is generated in each NR cell DU in the granularity interval. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the processing circuitry is configured to, in response to detection of the potential PCI collision or PCI confusion among NR cells. ### Claim 9 An apparatus of a New Radio (NR) network configured to operate as a Distributed Self-Organizing Network (D-SON) function, the apparatus comprising: processing circuitry configured to: consume a Management Service (MnS) of network function (NF) provisioning with a modifyMOIAttributes operation to configure a Physical Layer Cell Identity (PCI) list for a NR cell to set a PCI list for a PCI configuration function in the NR cell; consume a MnS of NF provisioning with modifyMOIAttributes operation to enable the PCI configuration function for the NR cell; and receive, from the MnS of NF provisioning, a notification notifyMOIAttributeValueChange to indicate a PCI value being assigned to the NR cell; and a memory configured to store the PCI value being assigned to the NR cell. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the PCI list is defined as pciList, which holds a list of PCIs that can be assigned to NR cells, a number of PCI values in the list is 0 to 1007. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein an attribute to enable the PCI configuration function is defined as pciConfigurationControl. ### Claim 12 (depends on 11) The apparatus according to claim 11, wherein the pciList and pciConfigurationControl attributed are contained in a PCIConfiguration Information Object Class (IOC). ### Claim 13 (depends on 9) The apparatus of claim 9, wherein an attribute to enable the PCI configuration function is defined as pciConfigurationControl. ### Claim 14 An apparatus for a new radio (NR) network configured to operate as a mobility robustness optimization (MRO) management function, the apparatus comprising: processing circuitry configured to: consume a network function (NF) provisioning Management Service (MnS) with modifyMOIAttributes operation to configure MRO targets for an MRO function; consume a MnS of NF provisioning with modifyMOIAttributes operation to enable the MRO function for a NR cell; consume a performance assurance MnS with a notifyFileReady or reportStreamData operation to collect MRO-related performance measurements; and analyze the MRO-related performance measurements to evaluate MRO performance; and a memory configured to store the MRO-related performance measurements. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein attributes representing the MRO targets and control to enable MRO function are defined in a MobilityRobustnessOptimization Information Object Class (IOC). ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the MobilityRobustnessOptimization IOC is contained in a NRCellCU IOC, and is inherited from a top IOC. ### Claim 17 (depends on 15) The apparatus of claim 15, wherein the MobilityRobustnessOptimization IOC contains attributes for MRO targets that include: totalHoFailureRate, intraRATHoFailureRate, intraRATTooEarlyHoFailureRate, intraRATTooLateHoFailureRate, intraRATHoToWrongCellFailureRate, interRATHoFailureRate, interRATTooEarlyHoFailureRate, interRATTooLateHoFailureRate, interRATUnnecessarvHoFailureRate, and interRATPingPongHoFailureRate, and the attributes are defined as: totalHoFailureRate This indicates the target of the number type: <> of handover failure events divided by multiplicity: 0 . . . * the total number of handover events, isOrdered: N/A together with its targetWeight. isUnique: N/A This target is suitable for MRO or local defaultValue: None breakout (LBO). isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. intraRATHoFailureRate This indicates the assigned target of the type: <> number of handover failure events multiplicity: 0 . . . * divided by the total number of intra- isOrdered: N/A radio access technology (RAT) isUnique: N/A handover events, together with its defaultValue: None targetWeight. isNullable: True This target is suitable for MRO or LBO. allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. intraRATTooEarlyHoFailureRate This indicates the assigned target of the type: <> number of too early handover failure multiplicity: 0 . . . * events divided by the total number of isOrdered: N/A intra-RAT handover events, together isUnique: N/A with its targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. intraRATTooLateHoFailureRate This indicates the assigned target of the type: <> number of too late handover failure multiplicity: 0 . . . * events divided by the total number of isOrdered: N/A intra-RAT handover events, together isUnique: N/A with its targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. intraRATHoToWrongCellFailureRate This indicates the assigned target of the type: <> number of handover to wrong cell multiplicity: 0 . . . * failure events divided by the total isOrdered: N/A number of intra-RAT handover events, isUnique: N/A together with its targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. interRATHoFailureRate This indicates the assigned target of the type: <> number of handover failure events multiplicity: 0 . . . * divided by the total number of inter- isOrdered: N/A RAT handover events, together with its isUnique: N/A targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. interRATTooEarlyHoFailureRate This indicates the assigned target of the type: <> number of too early handover failure multiplicity: 0 . . . * events divided by the total number of isOrdered: N/A inter-RAT handover events, together isUnique: N/A with its targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. interRATTooLateHoFailureRate This indicates the assigned target of the type: <> number of too late handover failure multiplicity: 0 . . . * events divided by the total number of isOrdered: N/A inter-RAT handover events, together isUnique: N/A with its targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. interRATUnnecessaryHoFailureRate This indicates the assigned target of the type: <> number of unnecessary handover failure multiplicity: 0 . . . * events divided by the total number of isOrdered: N/A inter-RAT handover events, together isUnique: N/A with its targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. interRATPingPongHoFailureRate This indicates the assigned target of the type: <> number of ping-pong handover failure multiplicity: 0 . . . * events divided by the total number of isOrdered: N/A inter-RAT handover events, together isUnique: N/A with its targetWeight. defaultValue: None This target is suitable for MRO or LBO. isNullable: True allowed Values: hoFailureRate: Integer 1 . . . 100 (percentage). targetWeight: Integer 1 . . . N. The higher the number the higher the weight. ### Claim 18 (depends on 15) The apparatus of claim 15, wherein the MobilityRobustnessOptimization contains an attribute of mroControl to enable or disable the MRO function. ### Claim 19 (depends on 14) The apparatus of claim 14, wherein the MRO targets and the MRO-related performance measurements related to each target include: Performance measurements Description Related targets Number of handover Includes all successful and Total handover events unsuccessful handover events failure rate Number of handover Includes unsuccessful Total handover failures handover events with failure failure rate causes Number of intra-radio Includes all successful and Total intra-RAT access technology unsuccessful intra-RAT handover failure (RAT) handover handover events rate events Number of intra-RAT Includes unsuccessful intra- Total intra-RAT handover failures RAT handover events with handover failure failure causes. rate Number of inter-RAT Includes all successful and Total inter-RAT handover failures unsuccessful inter-RAT handover failure handover events. rate Number of inter-RAT Includes unsuccessful inter- Total inter-RAT handover failures RAT handover events with handover failure failure causes. rate Number of inter-RAT Detected when a radio link Intra-RAT too too early handover failure (RLF) occurs after the early handover failures UE has stayed for a long failure rate period of time in the cell. Number of intra-RAT Detected when an RLF Intra-RAT too too late handover occurs shortly after a late handover failures successful handover from a failure rate source cell to a target cell or a handover failure occurs during the handover procedure. Number of intra-RAT Detected when an RLF Intra-RAT handover failures to occurs shortly after a handover to wrong cell successful handover from a wrong cell source cell to a target cell or failure rate a handover failure occurs during the handover procedure. Number of inter-RAT Detected when an RLF occurs Inter-RAT too too early handover after a user equipment (UE) early handover failures has stayed in an E-UTRAN failure rate cell which connects with 5GC for a long period of time. Number of inter-RAT Detected when an RLF occurs Inter-RAT too too late handover shortly after a successful late handover failures handover from an E-UTRAN failure rate cell which connects with EPC to a target cell in a E-UTRAN cell which connects with 5GC. Number of Detected when a UE is Inter-RAT unnecessary handed over from NG-RAN unnecessary handover to another to other system even though handover RAT quality of the NG-RAN failure rate coverage was sufficient for the service used by the UE. Number of inter-RAT Detected when an UE is Inter-RAT handover ping pong handed over from a cell in a ping-pong source system to a cell in a handover target system different from failure rate the source system, then within a predefined limited time the UE is handed over back to a cell in the source system, while the coverage of the source system was sufficient for the service used by the UE. ### Claim 20 (depends on 14) The apparatus of claim 14, wherein the MRO related measurements include handover failures related to MRO for intra-system mobility, handover failures related to MRO for inter-system mobility, unnecessary handovers for inter-system mobility, and handover ping-pong for inter-system mobility.