Patent ID: 7599346
Filing Date: 2009-10-06
Classification: H04J,H04L,H04W

Abstract:
1. A method for polling and scheduling in a multiuser network that includes a plurality of bandwidth efficient modems configured to carry out a distributed coordination function (DCF) for providing best-effort delivery of asynchronous packet data, the method comprising: each modem detecting that one or more of the other modems included in the network are bandwidth efficient and therefore capable of an aggressive access protocol that exploits co-channel demodulation capabilities; switching from a legacy protocol mode to the bandwidth efficient aggressive access protocol mode for at least one pair of communicating modems included in the network; two or more modems simultaneously transmitting on a single channel requests-to-send (RTS) messages to a first set of destination modems; simultaneously receiving clear-to-send (CTS) messages from the first set of destination modems at each of the requesting-to-send modems; recovering each corresponding CTS message using co-channel demodulation capabilities of the corresponding requesting modem; each requesting modem simultaneously transmitting its respective data on to the network; and each corresponding destination modem recovering the corresponding data using its co-channel demodulation capabilities.