Using phase difference to determine valid neighbors

Details Using phase difference to determine valid neighbors Using phase difference to determine valid neighbors

2011-07-19

2011-07-19

Nguyen, Tuan H (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S067110, C455S304000

Reexamination Certificate

active

07983622

ABSTRACT:
A method and system is disclosed for using phase shift to determine valid neighbors in a wireless communication system. A phase difference, measured at an access terminal, between an expected phase and an observed phase of a pilot signal from a given wireless service site is used to determine a differential distance. The differential distance corresponds to a difference between (i) the distance from the access terminal to the given wireless service site and (ii) the distance from the access terminal to a serving wireless service site. The expected phase is taken to be that of a known neighbor site of the access terminal, based on a postulation that the given site is the neighbor site. Upon a determination that the differential distance does not exceed a threshold distance, the given wireless service site is confirmed as being the neighbor site.

REFERENCES:
patent: 7536167 (2009-05-01), Gollnick et al.
patent: 7801487 (2010-09-01), Mehrabanzad et al.

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