Bandwidth-efficient wireless network modem
AssigneeBAE Systems Information and Electronic Systems Integration Inc.
InventorKarl D Brommer
Life of this patent
Estimating the term…
Abstract
A modem that provides efficient use of wireless network bandwidth in the presence of multi-user interference and noise comprising a multi-user detection module (115), a data formatting module (120), a control processor (125) and a demultiplexer (135).
Claims8
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.
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:
- two or more terminals 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;
- each corresponding destination modem recovering the corresponding data using its co-channel demodulation capabilities;
- each modem adaptively learning modes of operation of which each particular modem in the network is capable;
- and
- storing the learned modes of operation,
- wherein the learned modes of operation include a legacy protocol mode and a bandwidth efficient aggressive access protocol mode that exploits co-channel demodulation capabilities.
Dependencies are inferred from the claim text.