1
Meghna N Gandhi, Hector M Ribas, E Michael Shafer: Method and system for management of RF access probes based on RF conditions. Sprint Spectrum, December 22, 2009: US07636322 (17 worldwide citation)

A method and system for dynamically optimizing access channel parameters in a cellular wireless communication system. A computer system monitors the level of access channel occupancy and the level of reverse link noise in a given cell sector, and the computer system then automatically adjusts access ...


2
Nandish M Chalishazar, Hector M Ribas, Jason Sigg, Meng Y Yew, Abhijit V Apte: Method of selecting carrier frequency for call origination. Sprint Spectrum, November 27, 2007: US07302265 (17 worldwide citation)

A mobile station in an idle state is associated with a current sector-carrier that has a current pilot channel at a current carrier frequency. In response to a request to originate a call, the mobile station compares its current sector-carrier with one or more candidate sector-carriers that have pil ...


3
Hector M Ribas, Abhijit V Apte, Ryan S Talley, Meng Y Yew: Method and system for mobile station handoff. Sprint Spectrum, April 6, 2010: US07693521 (11 worldwide citation)

A mobile station is associated with a first wireless coverage area that has a first pilot signal. A second wireless coverage area that has a second pilot signal is in the mobile station's neighbor list. The mobile station measures E1, the energy per chip of the first pilot signal, and I1, the total ...


4
Hector M Ribas, Jason P Sigg, Meng Y Yew, Abhijit V Apte, Nandish M Chalishazar: Method and system for reducing pilot pollution by systematically adjusting sector power allocations. Sprint Spectrum, October 14, 2008: US07437176 (10 worldwide citation)

A method and system are disclosed for reducing pilot pollution in a wireless communication system by systematically (i) identifying areas of sector overlap and (ii) for each area, adjusting power allocation in one or more of the overlapping sectors so as to create a dominant sector and to reduce the ...


5
Meng Y Yew, Hector M Ribas, Jason P Sigg, Abhijit V Apte, Nandish M Chalishazar: Method and system for data rate based vertical handoff. Sprint Spectrum, June 23, 2009: US07551586 (9 worldwide citation)

A method and system for using data rate as a basis to allow or deny handoff from an IS-856 (e.g., EV-DO) communication system to an IS-2000 (e.g., 1xRTT) communication system. A base station detects that a hybrid terminal has received a threshold low forward link IS-856 data rate for a threshold tim ...


6
Jason Sigg, Hector M Ribas: Method and system for dynamic adjustment of radio frequency registration period based on load conditions. Sprint Spectrum, February 7, 2012: US08112083 (8 worldwide citation)

A method for handling registration requests in a cellular wireless communication system. The method includes determining that an air interface in the cellular wireless communication system has at least a threshold level of load. The method further includes, in response to the determination that the ...


7
Meng Y Yew, Hector M Ribas, Jason P Sigg, Abhijit V Apte, Nandish M Chalishazar: Method and system for data rate based vertical handoff. Sprint Spectrum, June 15, 2010: US07738427 (8 worldwide citation)

A method and system for using data rate as a basis to allow or deny handoff from a communication system operating under a first air interface protocol (first protocol system) to a communication system operating under a second air interface protocol (second protocol system). A base station detects th ...


8
Abhijit V Apte, Hector M Ribas, Ryan S Talley, Meng Y Yew, E Michael Shafer II: Method and system for timer-based mobile IP re-registration in a wireless wide area network. Sprint Spectrum, April 13, 2010: US07697489 (6 worldwide citation)

A network access server, such as a PDSN, might provide Mobile IP services to one or more access points for a wireless wide area network. A wireless device might handoff to an access point served by the network access server, and the wireless device might receive from the access point an identifier, ...


9
Meghna N Gandhi, Hector M Ribas, E Michael Shafer: Method and system for management of RF access probes based on RF conditions. Sprint Spectrum, June 5, 2012: US08194562 (6 worldwide citation)

A method and system for dynamically optimizing access channel parameters in a cellular wireless communication system. A computer system monitors the level of access channel occupancy and the level of reverse link noise in a given cell sector, and the computer system then automatically adjusts access ...


10
Jason P Sigg, Meng Y Yew, Hector M Ribas, Abhijit V Apte, Nandish M Chalishazar: Method and system for dynamically adjusting forward-link transmission power for sole sector serving one or more active mobile stations in cluster. Sprint Spectrum, May 17, 2011: US07945281 (5 worldwide citation)

A method and system are disclosed for dynamically adjusting forward-link transmission power in a cellular wireless communication system. A base station controller (BSC) or other radio network entity determines that a given cell sector a given sector is serving at least one active mobile station whil ...