Blind detection of packet data control channel

Details Blind detection of packet data control channel Blind detection of packet data control channel

2003-06-25

2008-08-12

Tieu, Binh K (Department: 2614)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S550100, C370S913000

Reexamination Certificate

active

07412238

ABSTRACT:
System and method for efficiently detecting packet format from a control channel. A preferred embodiment comprises the use of a slot counter (for example, slot counter1310) to count the number of slots received (perhaps at a buffer, such as buffer1305) since the last successfully demodulated packet. Using the slot counter, the number of demodulation attempts can be reduced. For example, if slot counter is one, then a single slot format decode is attempted. If slot counter is two, then a single and dual slot format decode is attempted. Additionally, channel quality can be used to determine likely channel formats. Furthermore, when multiple control channels are used, decoding information regarding one control channel can assist in determining the slot format of another.

REFERENCES:
patent: 6288748 (2001-09-01), Watanabe et al.
patent: 6728296 (2004-04-01), Yung
patent: 2003/0119452 (2003-06-01), Kim et al.
patent: 2003/0227875 (2003-12-01), Wei et al.
patent: 2004/0160933 (2004-08-01), Odenwalder et al.
patent: 2005/0003768 (2005-01-01), Laroia et al.

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