Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-01-29
2008-01-29
Trost, William (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S063400, C455S464000, C455S525000, C342S354000, C342S367000
Reexamination Certificate
active
07324817
ABSTRACT:
A wireless communication method and apparatus for selecting and reselecting cells used by a wireless transmit/receive unit (WTRU) in a wireless multi-cell communication system. The WTRU includes a switched beam antenna configured to form a plurality of directional beams and an omni-directional beam pattern. The WTRU measures signals from a plurality of cells using the directional beams and the omni-directional beam pattern. The WTRU selects and registers with the cell having the strongest signal. In one embodiment, the WTRU selects a directional beam which has the strongest signal and uses it as an active beam to communicate with the selected cell. In another embodiment, the WTRU selects a cell/beam combination and registers with the selected cell using the selected beam. In yet another embodiment, the WTRU initiates a handoff to a neighboring cell that has a better signal measurement result than the selected cell.
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Iacono Ana Lucia
Stern-Berkowitz Janet
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Ewart James D
InterDigital Technology Corporation
Trost William
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