Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2008-07-08
2011-10-25
Gesesse, Tilahun B (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S069000, C455S524000, C455S067110
Reexamination Certificate
active
08046022
ABSTRACT:
A base station (BTS) may instruct a client station (CS) to transmit sounding signals that the BTS may analyze to determine what adjustments, such as power, time, and/or frequency adjustment(s) should be made by the CS. The BTS may control when and how the sounding signals are sent by the CS. This helps reduce the possibility of adjustment signals transmitted by two or more CSs colliding. Thus, sounding signals transmitted by the CS in response to a request by the BTS can be received by the BTS with higher a probability of success. This permits the BTS to more accurately characterize the channel and to provide better adjustment of power level, frequency offset, and/or timing offset for more optimal communication. Such techniques can be used to reduce bit error rates and to improve the overall signal to noise ratio encountered by the system.
REFERENCES:
patent: 6985749 (2006-01-01), Bannasch et al.
patent: 7962113 (2011-06-01), Gao et al.
patent: 7995981 (2011-08-01), Gao et al.
Gesesse Tilahun B
Volpe and Koenig P.C.
WI-LAN Inc.
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