# US 9,882,640 B1 · Visible light communication personal area network coordinator (VPANC) and associated method for selecting suitable VPANCs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,882,640 B1 - Document ID: US9882640B1 - Status: Granted - Kind: B1 - Application number: 15/372,675 - Filed: 2016-12-08 - Granted: 2018-01-30 - Earliest claimed: 2016-10-28 - Assignees: Wipro Limited - Applicants: Wipro Limited - Inventors: Saptarshi Chaudhuri; Avijit Manna - Web page: https://patentgrep.com/patent/US9882640B1 ## CPC - H04B 10/116: Visible light communication - H04B 10/07953: {Monitoring or measuring OSNR, BER or Q} - H04B 10/11: Arrangements specific to free-space transmission, i.e. transmission through air or vacuum - H04B 10/27: Arrangements for networking - H04W 36/302: {due to low signal strength} - H04W 48/18: Selecting a network or a communication service - H04W 48/20: Selecting an access point - H04W 64/006: {with additional information processing, e.g. for direction or speed determination} - H04W 36/322: {by location data} - H04W 36/38: by fixed network equipment - H04W 88/08: Access point devices - H04W 88/12: Access point controller devices - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Visible light communication Personal Area Network Coordinators (VPANCs) and associated method for selecting VPANCs is disclosed. The method includes receiving, by a VPANC, channel scan parameters and VPANC controlling parameters created for the VPANC from a controller and End User Devices (EUD) information from each of a plurality of EUDs associated with the VPANC; creating, by the VPANC, a set of customized channel scan parameters and a VPANC selection policy for each of the plurality of EUDs based on the channel scan parameters, the VPANC controlling parameters, and the EUD information; and sharing, by the VPANC, with each EUD of the plurality of EUDs, an associated set of customized channel scan parameters and VPANC selection policy, wherein sharing enables an EUD to select a new VPANC from the plurality of VPANCs. ## Claims ### Claim 1 A method for selecting Visible light communication Personal Area Network Coordinators (VPANCs), the method comprising: receiving, by a VPANC, channel scan parameters and VPANC controlling parameters created for the VPANC from a controller and End User Devices (EUD) information from each of a plurality of EUDs associated with the VPANC, wherein the channel scan parameters and the VPANC controlling parameters are created by the controller based on VPANC information received from a plurality of VPANCs that includes the VPANC, the VPANC controlling parameters are associated with VPANCs and dead zones neighboring the VPANC; creating, by the VPANC, a set of customized channel scan parameters and a VPANC selection policy for each of the plurality of EUDs based on the channel scan parameters, the VPANC controlling parameters, and the EUD information; and sharing, by the VPANC, with each EUD of the plurality of EUDs, an associated set of customized channel scan parameters and VPANC selection policy, wherein sharing enables an EUD to select a new VPANC from the plurality of VPANCs. ### Claim 2 (depends on 1) The method of claim 1 further comprising requesting, by the VPANC: the EUD information from each of the plurality of EUDs; and the channel scan parameters and the VPANC controlling parameters from the controller. ### Claim 3 (depends on 1) The method of claim 1, wherein EUD information associated with an EUD of the plurality of EUDs comprises geo-location of the EUD and channel quality measurement reports for neighboring VPANCs of the EUD. ### Claim 4 (depends on 1) The method of claim 1 further comprising storing control data comprising geo-location of the VPANC, number of EUDs associated with the VPANC, list of the EUDs associated with the VPANC, default VPANC selection policy, geo-location of a requester EUD associated with the VPANC, distance between two or more EUDs in the list of EUDs, a threshold distance between a requested EUD and an EUD from the list of associated EUDs, and EUD parameters associated with the plurality of EUDs. ### Claim 5 (depends on 2) The method of claim 2 further comprising discarding the channel quality measurement reports of the EUD information associated with an EUD of the plurality of EUDs, when distance between a requester EUD and the EUD of the plurality of EUDs is more than a threshold distance. ### Claim 6 (depends on 4) The method of claim 4, wherein EUD parameters associated with an EUD of the plurality of EUDs comprises geo-location of the EUD, a set of customized channel scan parameters created for the EUD, channel quality of neighboring VPANCs of the EUD, a channel quality threshold for neighboring VPANCs, and a VPANC selection policy created for the EUD. ### Claim 7 (depends on 6) The method of claim 6 further comprising considering a neighboring VPANC as a candidate VPANC, when channel quality measured for the neighboring VPANC is greater than the channel quality threshold. ### Claim 8 (depends on 6) The method of claim 6, wherein the VPANC selection policy created for the EUD comprises number of candidate VPANCs, list of the candidate VPANCs, and suitability requirement parameters associated with each candidate VPANC in the list of candidate VPANCs. ### Claim 9 (depends on 8) The method of claim 8, wherein suitability requirement parameters for a candidate VPANC in the list of candidate VPANCs comprises a candidate VPANC-Identifier (ID) of the candidate VPANC, geo-location of the candidate VPANC, geo-location of dead zones near the candidate VPANC, current load on the candidate VPANC, backhaul configured for the candidate VPANC, and backhaul currently used by the candidate VPANC. ### Claim 10 (depends on 1) The method of claim 1 further comprising providing, by the VPANC, to the controller VPANC information associated with the VPANC. ### Claim 11 (depends on 10) The method of claim 10, wherein VPANC information collected from the VPANC comprises information associated with neighboring VPANC of the VPANC, geo-location of the VPANC, current load on the VPANC, backhaul throughput configured for the VPANC, and currently used backhaul throughput by the VPANC. ### Claim 12 (depends on 1) The method of claim 1, wherein the VPANC controlling parameters associated with the VPANC comprises number of neighboring VPANCs of the VPANC, list of the neighboring VPANCs, geo-location of dead zones near the VPANC, and VPANC measurement reports associated with each neighboring VPANC. ### Claim 13 A Visible light communication Personal Area Network Coordinator (VPANC) in a Light Fidelity (Li-Fi) network, the VPANC comprising: a network interface communicatively coupled to a controller and a plurality of End User Devices (EUDs); a processor; and a memory storing instructions that, when executed, cause the processor to perform operations comprising: receiving channel scan parameters and VPANC controlling parameters created for the VPANC from a controller and EUD information from each of a plurality of EUDs associated with the VPANC, wherein the channel scan parameters and the VPANC controlling parameters are created by the controller based on VPANC information received from a plurality of VPANCs that includes the VPANC, the VPANC controlling parameters are associated with VPANCs and dead zones neighboring the VPANC; creating a set of customized channel scan parameters and a VPANC selection policy for each of the plurality of EUDs based on the channel scan parameters, the VPANC controlling parameters, and the EUD information; and sharing with each EUD of the plurality of EUDs, an associated set of customized channel scan parameters and VPANC selection policy, wherein sharing enables an EUD to select a new VPANC from the plurality of VPANCs. ### Claim 14 (depends on 13) The VPANC of claim 13, wherein the operations further comprise requesting, by the VPANC: the EUD information from each of the plurality of EUDs; and the channel scan parameters and the VPANC controlling parameters from the controller. ### Claim 15 (depends on 13) The VPANC of claim 13, wherein EUD information associated with an EUD of the plurality of EUDs comprises geo-location of the EUD and channel quality measurement reports for neighboring VPANCs of the EUD. ### Claim 16 (depends on 13) The VPANC of claim 13, wherein the operations further comprise storing control data comprising geo-location of the VPANC, number of EUDs associated with the VPANC, list of the EUDs associated with the VPANC, default VPANC selection policy, geo-location of a requester EUD associated with the VPANC, distance between two or more EUDs in the list of EUDs, a threshold distance between a requested EUD and an EUD from the list of associated EUDs, and EUD parameters associated with the plurality of EUDs. ### Claim 17 (depends on 15) The VPANC of claim 15, wherein the operations further comprise discarding the channel quality measurement reports of the EUD information associated with an EUD of the plurality of EUDs, when distance between a requester EUD and the EUD of the plurality of EUDs is more than a threshold distance. ### Claim 18 (depends on 17) The VPANC of claim 17, wherein EUD parameters associated with an EUD of the plurality of EUDs comprises geo-location of the EUD, a set of customized channel scan parameters created for the EUD, channel quality of neighboring VPANCs of the EUD, a channel quality threshold for neighboring VPANCs, and a VPANC selection policy created for the EUD. ### Claim 19 (depends on 18) The VPANC of claim 18, wherein the operations further comprise considering a neighboring VPANC as a candidate VPANC, when channel quality measured for the neighboring VPANC is greater than the channel quality threshold. ### Claim 20 (depends on 18) The VPANC of claim 18, wherein the VPANC selection policy created for the EUD comprises number of candidate VPANCs, list of the candidate VPANCs, and suitability requirement parameters associated with each candidate VPANC in the list of candidate VPANC. ### Claim 21 A non-transitory computer-readable storage medium having stored thereon, a set of computer-executable instructions for selecting Visible light communication Personal Area Network Coordinators (VPANCs), causing a computer comprising one or more processors to perform steps comprising: receiving channel scan parameters and VPANC controlling parameters created for the VPANC from a controller and EUD information from each of a plurality of EUDs associated the VPANC, wherein the channel scan parameters and the VPANC controlling parameters are created by the controller based on VPANC information received from a plurality of VPANCs that includes the VPANC, the VPANC controlling parameters are associated with VPANCs and dead zones neighboring the VPANC; creating a set of customized channel scan parameters and a VPANC selection policy for each of the plurality of EUDs based on the channel scan parameters, the VPANC controlling parameters, and the EUD information; and sharing with each EUD of the plurality of EUDs, an associated set of customized channel scan parameters, and the EUD information; and sharing with each EUD of the plurality of EUDs, an associates set of customized channel scan parameters and VPANC selection policy, wherein sharing enables an EUD to select a new VPANC from the plurality if VPANCs.