Multicarrier transmission system with low power sleep mode and rapid-on capability
View Patent ↗A multicarrier transceiver is provided with a sleep mode in which it idles with reduced power consumption when it is not needed to transmit or receive data. The full transmission and reception capabilities of the transceiver are quickly restored when needed, without requiring the full (and time-consuming) initialization commonly needed to restore such transceivers to operation after inactivity.
1. An apparatus comprising a transceiver operable to:
transmit, in a full power mode, a plurality of superframes, wherein each superframe comprises a plurality of data frames followed by a synchronization frame;
transmit a message to enter a low power mode;
enter the low power mode by at least transmitting a flag signal;
store, in the low power mode, one or more parameters associated with the full power mode;
exit from the low power by at least transmitting a plurality of frames of known data; and
restore the full power mode by at least using the one or more parameters and without reinitializing the transceiver.
2. The apparatus of claim 1 , further operable to transmit a pilot tone during the low power mode.
3. The apparatus of claim 1 , further operable to continue to maintain a synchronized frame count with a second transceiver during the low power mode.
4. The apparatus of claim 1 , wherein the apparatus is a CO device that is capable of transmitting internet and video data.
5. The apparatus of claim 1 , wherein the apparatus is a customer premises equipment that is capable of transmitting internet and video data.
6. The apparatus of claim 1 , wherein the at least one parameter comprises at least one of a fine gain parameter and a bit allocation parameter.
7. An apparatus comprising a transceiver operable to:
receive, in a full power mode, a plurality of superframes, wherein each superframe comprises a plurality of data frames followed by a synchronization frame;
receive a message to enter a low power mode;
enter the low power mode by at least receiving a flag signal;
store, in a low power mode, one or more parameters associated with the full power mode;
exit from the low power by at least receiving a plurality of frames of known data; and
restore the full power mode by at least using the one or more parameters and without reinitializing the transceiver.
8. The apparatus of claim 7 , further operable to receive a pilot tone during the low power mode.
9. The apparatus of claim 7 , further operable to continue to maintain a synchronized frame count with a second transceiver during the low power mode.
10. The apparatus of claim 7 , wherein the apparatus is a CO device that is capable of receiving internet and video data.
11. The apparatus of claim 7 , wherein the apparatus is a customer premises equipment that is capable of receiving internet and video data.
12. The apparatus of claim 7 , wherein the at least one parameter comprises at least one of a fine gain parameter and a bit allocation parameter.
13. A method, in a multicarrier transceiver, comprising:
transmitting, in a full power mode and a low power mode, a respective plurality of superframes, wherein each superframe comprises a plurality of data frames followed by a synchronization frame;
transmitting a message to enter a low power mode;
entering the low power mode by at least transmitting a flag signal;
storing, in the low power mode, one or more parameters associated with the full power mode; and
exiting from the low power by at least transmitting a plurality of frames of known data; and
restoring the full power mode by at least using the one or more parameters and without reinitializing the transceiver.
14. The method of claim 13 , further comprising transmitting a pilot tone during the low power mode.
15. The method of claim 13 , further comprising continuing to maintain a synchronized frame count with a second transceiver during the low power mode.
16. The method of claim 13 , wherein the method is performed by a CO device that is transmitting internet and video data.
17. The method of claim 13 , wherein the method is performed by a customer premises equipment that is transmitting internet and video data.
18. The method of claim 13 , wherein the at least one parameter comprises at least one of a fine gain parameter and a bit allocation parameter.
19. A method, in a multicarrier transceiver, comprising:
receiving, in a full power mode, a plurality of superframes, wherein each superframe comprises a plurality of data frames followed by a synchronization frame;
receiving a message to enter a low power mode;
entering the low power mode by at least receiving a flag signal;
storing, in a low power mode, one or more parameters associated with the full power mode; and
exiting from the low power by at least transmitting a plurality of frames of known data; and
restoring the full power mode by at least using the one or more parameters and without reinitializing the transceiver.
20. The method of claim 19 , further comprising receiving at least one test signal prior to restoring the full power mode.
21. The method of claim 19 , further comprising continuing to maintain a synchronized frame count with a second transceiver during the low power mode.
22. The method of claim 19 , wherein the method is performed by a CO device that is receiving internet and video data.
23. The method of claim 19 , wherein the method is performed by a customer premises equipment that is receiving internet and video data.
24. The method of claim 19 , wherein the at least one parameter comprises at least one of a fine gain parameter and a bit allocation parameter.