Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Reexamination Certificate
2006-05-23
2006-05-23
Appiah, Charles N (Department: 2686)
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
C455S574000, C370S331000, C340S007320
Reexamination Certificate
active
07050782
ABSTRACT:
A system and method for performing power management in a communication system without losing data is disclosed. The G.Lite system is an exemplary system suitable for implementing the present invention because it includes at least one operational state and an idle state in which no data is transmitted. The G.Lite standard defines ATU states. The defined states are full on state L0, low power state L1 and idle state L3. In L0 state, the ADSL link is fully operational at full data rate. In L1 state, the ADSL link is fully operational at a lower data rate. In L3 state, no signal is transmitted. Because no signal is transmitted, no idle cells are transmitted. This will result in losing the cell delineation and ATM link connectivity. Therefore, when data is received for an ATU in L3 state, data cells may be lost. The present invention solves the problem of lost data cells by allowing interaction between the control path and the data path by requesting that the micro-controller be interrupted when a data cell arrives for an ATU-C that is in L3 state. When a data cell arrives for an ATU-C in L3 state, the micro-controller is interrupted. The micro-controller then ensures that a sufficient number of idle cells are sent to the ATU-C prior to any data cells being sent to the ATU-C.
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Adas Abdelnaser M.
Famorzadeh Shahram
Peshkin Joel D.
Appiah Charles N
Ly Nghi H.
Mindspeed Technologies Inc.
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