METHOD AND SYSTEM FOR DEVICE POSITIONING UTILIZING DISTRIBUTED TRANSCEIVERS WITH ARRAY PROCESSING
First Claim
1. A method of processing signals, the method comprising:
- in a mobile device;
receiving 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;
generating channel measurements for said received radio frequency signals; and
receiving a position estimate for said mobile device from a remote location server, wherein;
corresponding transmit diversity configurations are determined by said remote 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; and
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 remote 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 remote location server;
said signature function is utilized by said remote 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 remote location server based on resolution of said signature function over said scanned locations in said location scanning region; and
a subset of said corresponding transmit diversity configurations and/or a subspace of said location scanning region is selected by said remote location server based on said resolution of said signature function over said scanned locations in said location scanning region.
0 Assignments
0 Petitions
Accused Products
Abstract
A mobile device receives RF signals from base stations each having a plurality of distributed transceivers. Each distributed transceiver comprises an independently configurable antenna array for transmitting the radio frequency signals to the mobile device. The mobile device determines channel characteristics for the received RF signals, generates channel measurements for the received RF signals, and receives a position estimate for the mobile device from a remote location server (RLS). The corresponding transmit diversity configurations are determined by the RLS and applied to the base stations for the (1) channel measurements for mobile device and (2) channel measurements at scanned locations in a location scanning region, which are both calculated by the RLS. The RLS weights the generated channel measurements utilizing one or more scaling factors, which are utilized to determine a relative reliability and contribution of the generated channel measurements.
-
Citations
28 Claims
-
1. A method of processing signals, the method comprising:
in a mobile device; receiving 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; generating channel measurements for said received radio frequency signals; and receiving a position estimate for said mobile device from a remote location server, wherein; corresponding transmit diversity configurations are determined by said remote 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; and 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 remote 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 remote location server; said signature function is utilized by said remote 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 remote location server based on resolution of said signature function over said scanned locations in said location scanning region; and a subset of said corresponding transmit diversity configurations and/or a subspace of said location scanning region is selected by said remote location server based on said resolution of said signature function over said scanned locations in said location scanning region. - View Dependent Claims (2, 3, 4)
-
5. 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 remote location server, wherein; corresponding transmit diversity configurations are determined by said remote 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 remote 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 remote location server; said signature function is utilized by said remote 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 remote location server based on resolution of said signature function over said scanned locations in said location scanning region; and a subset of said corresponding transmit diversity configurations and/or a subspace of said location scanning region is selected by said remote location server based on said resolution of said signature function over said scanned locations in said location scanning region. - View Dependent Claims (6, 7, 8)
-
9. A method of processing signals, the method comprising:
in a mobile device; receiving 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; generating channel measurements for said received radio frequency signals; and receiving a position estimate for said mobile device from a remote location server, wherein; corresponding transmit diversity configurations are determined by said remote 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 remote location server; and said remote location server weighs said generated channel measurements utilizing one or more scaling factors to determine a relative reliability and contribution of said generated channel measurements. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
-
19. 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 remote location server, wherein; corresponding transmit diversity configurations are determined by said remote 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 remote location server; and said remote location server weighs said generated channel measurements utilizing one or more scaling factors to determine a relative reliability and contribution of said generated channel measurements. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
Specification