Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-08-12
2008-08-12
Nguyen, Duc (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S443000, C370S329000
Reexamination Certificate
active
07412240
ABSTRACT:
A method and system wherein handover information is broadcast in a wireless local area network. Handover information is broadcast in a beacon frame thereby allowing WTRUs operating in a wireless area network to handover to available alternative systems as desired. WTRUs may read the beacon frame and obtain appropriate information for handing over to alternative systems having coverage areas that overlap that of the wireless local area network. The alternative systems may be any type of wireless system and the wireless local area network may be any type of wireless area network.
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“Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications.” Jun. 12, 2003. ANSI/IEEE Std 802.11, 1999 Edition (R2003).
InterDigital Technology Corporation
Nguyen Duc
Thier Michael T
Volpe and Koenig P.C.
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