Method and system for device positioning utilizing distributed transceivers with array processing

A system for processing signals, the system comprising:

• a mobile device, said mobile device being operable to:
• receive radio frequency signals from one or more base stations, wherein:
• each of said one or more base stations comprises a plurality of distributed transceivers;
• and
• each of said plurality of distributed transceivers comprises an independently configurable antenna array for transmitting said radio frequency signals to said mobile device;
• determine channel characteristics for said received radio frequency signals;
• generate channel measurements for said received radio frequency signals;
• and
• receive a position estimate for said mobile device from a location server, wherein:
• corresponding transmit diversity configurations are determined by said location server, said corresponding transmit diversity configurations being applied to said one or more base stations for both said channel measurements for said mobile device and channel measurements at scanned locations in a location scanning region;
• said position estimate for said mobile device over said location scanning region utilizing said channel measurements for said mobile device, said channel measurements at said scanned locations, and said corresponding transmit diversity configurations are calculated by said location server;
• a signature function for said channel measurements for said mobile device, and said channel measurements at said scanned locations over said corresponding transmit diversity configurations, are selected by said location server;
• said signature function is utilized by said location server to determine said position estimate for said mobile device over said corresponding transmit diversity configurations;
• said position estimate for said mobile device is updated by said location server based on a resolution of said signature function over said scanned locations in said location scanning region;
• at least one of (i) a subset of said corresponding transmit diversity configurations and (ii) a subspace of said location scanning region is selected by said location server based on said resolution of said signature function over said scanned locations in said location scanning region;
• and
• said signature function is utilized by said location server to calculate said updated position estimate for said mobile device over at least one of (i) said subset of said corresponding transmit diversity configurations and (ii) said subspace of said location scanning region.

A method for processing signals, the method comprising:

• in a mobile device:
• receiving radio frequency signals from one or more base stations in a location scanning region, wherein:
• each of said one or more base stations comprises a plurality of distributed transceivers;
• and
• each of said plurality of distributed transceivers comprises an independently configurable antenna array for transmitting said radio frequency signals to said mobile device;
• communicating channel measurements generated by said mobile device for said received radio frequency signals to a location server, wherein said location server:
• configures, utilizing one or more channel transmit settings, said independently configurable antenna array for said plurality of distributed transceivers in said one or more base stations in said location scanning region to transmit said radio frequency signals;
• determines a coarse position estimate for said mobile device for each of a plurality of sub-regions within said location scanning region;
• applies a plurality of different signature functions to said determined coarse position estimate for said each of said plurality of sub-regions to generate corresponding sub-regions position estimates;
• and
• determines a position estimate for said mobile device based on said sub-regions position estimates;
• and
• receiving said position estimate for said mobile device from said location server.

A system for processing signals, the system comprising:

• a mobile device, said mobile device is operable to:
• receive radio frequency signals from one or more base stations in a location scanning region, wherein:
• each of said one or more base stations comprises a plurality of distributed transceivers;
• and
• each of said plurality of distributed transceivers comprises an independently configurable antenna array for transmitting said radio frequency signals to said mobile device;
• communicate channel measurements generated by said mobile device for said received radio frequency signals to a location server, wherein said location server:
• configures, utilizing one or more channel transmit settings, said independently configurable antenna array for said plurality of distributed transceivers in said one or more base stations in said location scanning region to transmit said radio frequency signals;
• determines a coarse position estimate for said mobile device for each of a plurality of sub-regions within said location scanning region;
• applies a plurality of different signature functions to said determined coarse position estimate for said each of said plurality of sub-regions to generate corresponding sub-regions position estimates;
• and
• determines a position estimate for said mobile device based on said sub-regions position estimates;
• and
• receive said position estimate for said mobile device from said location server.