Method and apparatus for transmitting and receiving...

Details Method and apparatus for transmitting and receiving... Method and apparatus for transmitting and receiving...

2008-01-29

2008-01-29

Payne, David C. (Department: 2611)

Pulse or digital communications

Spread spectrum

Frequency hopping

C375S130000, C375S146000, C375S134000, C370S479000, C370S441000

Reexamination Certificate

active

07324578

ABSTRACT:
A method and apparatus for efficiently transmitting and receiving information about spreading codes used for a packet data-transmitting channel in a spread spectrum communication system. A BS determines Walsh codes for spreading a PDCH and transmits on a PDCCH an index of a last determined Walsh code. Also, if the determined Walsh codes cannot be fully represented by the use of the last Walsh code index only, the BS transmits a Walsh space bitmap indicating the availability of the Walsh codes individually on another PDCCH or a WAICH.

REFERENCES:
patent: 6952454 (2005-10-01), Jalali et al.
patent: 2003/0067961 (2003-04-01), Hudson et al.
patent: 2003/0114162 (2003-06-01), Chheda et al.

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