METHOD FOR UPDATING LOCATION OF USER EQUIPMENT

WIPO Patent Application WO/2009/058555

A3

A method for updating location of a user equipment in a cellular system is disclosed. The method comprises the user equipment receiving route update radius information 220. The user equipment further calculates a route update radius from the received route update radius information 230 by using a random number generated by the user equipment. The user equipment then transmits the calculated route update radius to a cellular network 240. Alternatively, the method comprises the cellular network receiving a route update message from a user equipment 420. The cellular network further calculates a route update radius 430 using a random number generated by the cellular network. The cellular network then unicasts the calculated route update radius to the user equipment 440.

RAMACHANDRAN VINOD KUMAR (IN)
DHAM RICHA (IN)
KALYANASUNDARAM SURESH (IN)

PCT/US2008/079831

July 15, 2010

October 14, 2008

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MOTOROLA INC (US)
RAMACHANDRAN VINOD KUMAR (IN)
DHAM RICHA (IN)
KALYANASUNDARAM SURESH (IN)

H04B7/26

US20070249329A1

2007-10-25

R. AGRAWAL ET AL: "Enhanced Distance-Based Location Update Mechanism(Directional distance- based location update mechanism using knowledge of mobility patterns)", THE 3RD MOTOROLA CHINA TECHNOLOGY SYMPOSIUM, May 2006 (2006-05-01)
"cdma2000 high rate packet data air interface specification", 3GPP2 C.S0024-B, VERSION 2, March 2007 (2007-03-01)

ANOLICK, Simon B. et al. (Schaumburg, Illinois, US)

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