Multiplex communications – Communication over free space – Signaling for performing battery saving
Reexamination Certificate
2011-03-08
2011-03-08
Qureshi, Afsar M. (Department: 2472)
Multiplex communications
Communication over free space
Signaling for performing battery saving
C370S352000, C370S401000, C375S222000, C713S320000, C340S007320, C725S118000
Reexamination Certificate
active
07903598
ABSTRACT:
An apparatus and method is disclosed to calculate the actual received desired channel power from the downstream transmit power of a Cable Modem Termination System (CMTS) when operating at the nominal line voltage and/or at the normal room temperature as per the DOCSIS specification. A Set-top Device produces a Downstream Power Management (DPM) gain measurement signal having a known power level. The Set-top Device embeds the DPM gain measurement signal onto a received downstream multi-channel communication signal. After embedding the DPM gain measurement signal onto the downstream multi-channel communication signal, the Set-top Device downconverts the combined DPM gain measurement signal and downstream multi-channel communication signal to recover one or more communication channels containing information of a broadcast. The Set-top Device measures a power level of a representation of the DPM gain measurement signal embedded within the one or more communication channels containing the information of the broadcast to determine a Set-top Device gain. The Set-top Device measures a power level of the one or more communication channels containing the information of the broadcast. The Set-top Device calculates the actual received desired channel power from the downstream transmit power of the CMTS based on the Set-top Device gain and the power level of the one or more communication channels containing the information of the broadcast.
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“Data-Over-Cable Service Interface Specifications DOCSIS 1.1 Operations Support System Interface Specification SP-OSSIv1.1-I07-030730”, IEEE Computer Society, IEEE, New York, NY, ISBN 0-7381-3696-4 (SH95132) (Print), ISBN 0-7381-3697-2 (SS95132) (PDF), Jun. 18, 2003, pp. i-ix and 1-121 (133 pages total).
Gatta Francesco
Gomez Ramon Alejandro
Koh Dongsoo Daniel
McMullin Donald G.
Whitehead Harold Raymond
Broadcom Corporation
Qureshi Afsar M.
Sterne Kessler Goldstein & Fox P.L.L.C.
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