Interference detection and avoidance in a telecommunication network

摘要

Presented herein are techniques for detection and avoidance of interference in a telecommunications network. In one example, a cable modem termination system (CMTS) is configured to receive upstream traffic from a plurality of cable modems. The CMTS detects collision characteristics resulting from substantially simultaneous transmissions from different combinations of the cable modems. Based on the detected collision characteristics, the CMTS designates/identifies collision groups for each of a plurality of the cable modems. After designation of the collision groups, the CMTS schedules upstream transmissions by the plurality of cable modems such that cable modems within the same collision group do not transmit within a same time frame and such that two or more cable modems that are not within the same collision group may transmit within a same time frame.

主权项

1. A method comprising:
at a cable modem termination system:
detecting collision characteristics resulting from substantially simultaneous upstream transmissions from different combinations of cable modems;in response to detecting the collision characteristics, dynamically designating collision groups for each of a plurality of the cable modems, wherein a collision group comprises a primary cable modem and one or more secondary cable modems that, based on the collision characteristics, represent each of the cable modems that may interfere with the upstream transmissions of the primary cable modem; andscheduling upstream transmissions by the plurality of cable modems such that the primary cable modem and the one or more secondary cable modems within the same collision group do not transmit within a same time frame and such that two or more cable modems that are not within the same collision group may transmit within a same time frame.