Dynamic bandwidth allocation in OFDM communication systems

摘要

Various embodiments of a mechanism of dynamic allocation of bandplan are provided. In one aspect, a communication device utilizes a bandplan during initialization in a digital communication system. The communication device modifies the bandplan after one or more channel estimations to optimize data rates of communications in a downstream direction and an upstream direction.

主权项

1. A method, comprising:
performing, by a first communication device in an orthogonal frequency-division multiplexing (OFDM) communication system with the first communication device and a second communication device, one or more channel estimations, either on its own or using the second communication device; and modifying, by the first communication device, a predefined bandplan after performing the one or more channel estimations in either a downstream direction or in an upstream direction or both in the downstream direction and in the upstream direction, wherein each communication device transmits either in the downstream direction or in the upstream direction, and wherein initially both the first communication device and the second communication device transmit using the predefined bandplan which determines a set of subcarriers used for transmissions in the upstream direction and a set of subcarriers used for transmissions in the downstream direction.