Methods for reliable user switchback on a PHS spatial...

Details Methods for reliable user switchback on a PHS spatial... Methods for reliable user switchback on a PHS spatial...

2006-03-28

2006-03-28

Sam, Phirin (Department: 2661)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S339000, C370S344000, C370S503000

Reexamination Certificate

active

07020107

ABSTRACT:
An embodiment of the invention provides a method for effecting switchback on a spatial division multiple access (SDMA) PHS channel. A communication signal is broadcast over each of one or more SDMA channels of a multi-access channel to one or more corresponding user terminals. A set of transmit spatial weights is determined for a synchronization burst to a user terminal attempting to reestablish communication over an SDMA channel of the multi-access channel. The set of transmit spatial weights is determined such that interference caused by one or more communication signals to the synchronization burst is reduced.

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PCT International Search Report, Dec. 1, 2004, 3 pages.

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