Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2008-03-04
2008-03-04
Trost, William (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S063400, C455S101000, C455S443000, C455S525000, C455S575700, C370S331000, C370S332000, C342S081000, C342S367000, C342S368000, C343S757000, C343S824000
Reexamination Certificate
active
11051016
ABSTRACT:
Measurement opportunities are provided to a wireless transmit/receive unit (WTRU) operating with a switched beam antenna in a CDMA wireless communication system. The switched beam antenna is a smart antenna generating a plurality of directional beams and an omni-directional beam. The bursty nature of packet data transmission generates periods of inactivity or low traffic during a call. The WTRU switches to antenna beams other than the selected antenna beam for receiving and measuring signals during these periods of inactivity or low traffic. Moreover, if the network has knowledge of the fact the WTRU is operating using a switched beam antenna, the network can use this information when making decisions on channel allocations, thus providing frequent measurement opportunities to the WTRU in order to support the switched beam antenna operation.
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Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Ewart James
Interdigital Technology Corporation
Trost William
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