Adjusting transmission power in customer premise equipment
Methods, systems, and apparatuses operate to adjust transmission power of a customer premise equipment device using a transmit channel set parameter. Power characteristics associated with a received signal from a customer premise equipment device can be identified, and a determination is made whether to adjust a transmission power associated with transmission of the signal. Based upon the determination, an adjustment can be made to the transmission power using a transmit channel set parameter, thereby adjusting the channels used by the customer premise equipment device to transmit the signal.
1. A computer-implemented method, comprising:
receiving an upstream signal transmitted from a cable modem;
identifying a transmission power of the received signal at a cable modem termination system or a converged cable access device;
identifying a signal to noise ratio associated with the received signal;
determining, at the cable modem termination system or converged cable access device, a first determination and a second determination, wherein the first determination indicates whether to increase the power associated with the transmission of the received signal based upon a comparison of the transmission power to the signal to noise ratio and an evaluation of the potential data rate improvement, and wherein the second determination, based upon comparing the transmission power with a maximum power specified, indicates whether the cable modem can transmit increased transmission power using the current channel assignment; and
if the first determination is to increase the power associated with the transmission of the received signal and the second determination indicates that increased power on the current channel assignment cannot be performed, adjusting a transmit channel set parameter associated with the cable modem, wherein the transmit channel set parameter provides an indication for instructing the cable modem to adjust a number of channels used by the cable modem for transmitting the signal; and
wherein adjusting the transmit channel set parameter comprises:
identifying channels with higher transmit power capabilities, and
including the channels with higher transmit power capabilities in a transmit channel set on which the cable modem is assigned to transmit.
2. The computer-implemented method of claim 1 , wherein adjusting the transmit channel set parameter comprises reducing the number of channels included in the transmit channel set parameter.
3. The computer-implemented method of claim 1 , further comprising:
determining whether transmission power associated with transmission of the signal is above a high power threshold based upon a comparison of the transmission power to the signal to noise ratio;
if the comparison is below the specified threshold, adjusting the transmit channel set parameter to decrease the transmission power associated with the transmission of the signal.
4. The computer-implemented method of claim 1 , wherein determining whether to increase the power associated with the transmission of the received signal comprises determining that power level is below a low power threshold based upon a comparison of the transmission power to the signal to noise ratio, and if the power is below the low power threshold, determining to increase the power associated with transmission of the signal.
5. The computer-implemented method of claim 1 , wherein the signal comprises a plurality of channels.
6. The computer-implemented method of claim 5 , wherein the plurality of channels are DOCSIS channels.
7. The computer implemented method of claim 1 , wherein identifying a transmission power associated with transmission of the signal comprises receiving a parameter set by the remote device identifying the transmission power.
8. A system, comprising:
a cable modem operable transmit a signal upstream on a cable network;
a central cable network node operable to receive the signal via the network, identify whether to adjust the power associated with transmission of the signal based upon power characteristics associated with the signal, and to transmit a command to the cable modem comprising an adjustment to a transmit channel set parameter associated with the cable modem based upon the power characteristics associated with the signal, wherein the transmit channel set parameter provides an indication for instructing the cable modem to increase transmission power of the transmitted signal, or if transmission power cannot be increased based upon reaching a maximum power level allowable by the cable modem, wherein the transmit channel set parameter provides an indication for instructing the cable modem to adjust a number of channels used by the cable modem for transmitting the signal;
wherein the cable modem is operable to receive the command and adjust transmission power or adjust the number of channels used based upon instructions in the transmit channel set parameter, thereby adjusting the transmission power associated with signals the remote device transmits upstream on the network while remaining in a dynamic range window associated with the cable modem.
9. The system of claim 8 , wherein the central network node is operable to adjust the transmit channel set parameter by reducing the number of channels included in the transmit channel set parameter, thereby allowing increased signal transmission power.
10. The system of claim 8 , wherein the central network node is operable to adjust the transmit channel set parameter by:
identifying channels with higher transmit power capabilities, and
including those channels with higher transmit power capabilities in the transmit channel set parameter included in the command sent to the remote device, thereby increasing the transmission power of the signal.
11. The system of claim 8 , wherein the central network node is operable to adjust the transmit channel set parameter by increasing the number of channels included in the transmit channel set parameter, thereby decreasing the transmission power of the remote device.
12. The system of claim 8 , wherein the central network node is operable to adjust the transmit channel set parameter by:
identifying channels with lower transmit power capabilities, and
including those channels with lower transmit power capabilities in the transmit channel set parameter included in the command sent to the remote device, thereby decreasing the transmission power of the signal.
13. The system of claim 8 , wherein the signal comprises a plurality of channels.
14. The system of claim 13 , wherein the plurality of channels are DOCSIS channels.
15. The system of claim 8 , wherein the central network node is further operable to identify a transmission power associated with transmission of the signal by extracting a parameter sent by the remote device identifying the transmission power.
16. One or more non-transitory computer readable media embodied in computer executable instructions that, when executed, cause a processor to perform operations comprising:
receiving a signal transmitted from a cable modem;
identifying transmission power characteristics of the received signal at a cable plant headend;
determining a first determination and a second determination, wherein the first determination indicates whether to adjust a transmission power associated with the transmission of the received signal based upon the transmission power characteristics, and wherein the second determination, based upon comparing the transmission power with a maximum power specified, indicates whether the cable modem can transmit increased transmission power using the current channel assignment based on a dynamic range window associated with the cable modem; and
if the first determination is to adjust the transmission power associated with the transmission of the received signal and the second determination indicates that increased power on the current channel assignment cannot be performed, adjusting a transmit channel set parameter associated with the cable modem, wherein the transmit channel set parameter provides an indication for instructing the cable modem to adjust a number of channels used by the cable modem for transmitting the signal; and
wherein adjusting the transmit channel set parameter comprises:
identifying channels with higher transmit power capabilities, and
including the channels with higher transmit power capabilities in a transmit channel set on which the cable modem is assigned to transmit.
17. The computer readable media of claim 16 , wherein adjusting the transmit channel set parameter comprises:
reducing the number of channels included in the transmit channel set parameter, thereby increasing the transmission power associated with the transmission of the signal.
18. The computer readable media of claim 16 , wherein adjusting the transmit channel set parameter comprises:
increasing the number of channels included in the transmit channel set parameter, thereby decreasing the transmission power associated with the transmission of the signal.