Patent ID: 9167553
Filing Date: 2015-10-20
Classification: G01S,H04W

Abstract:
1. A method of determining proximity of a plurality of associated mobile devices, comprising: receiving a proximity request relating to a plurality of associated mobile devices; obtaining a list of identities of said plurality of associated mobile devices for which proximity is to be determined; determining a bucket index of a place to which proximity is to be determined for each of said plurality of associated mobile devices; querying a target geonexus node server associated with said determined bucket index requesting which of said plurality of associated mobile devices are currently located within an area of responsibility of said target geonexus node server; initiating a query to each geonexus node server responsible for an area adjacent to said target geonexus node server, requesting which of said plurality of associated mobile devices are currently located within the respective adjacent area of responsibility; and responding to said proximity request with a proximity determination for each of said plurality of associated mobile devices.