Programmable PHY for broadband wireless access systems
First Claim
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1. A method for selecting a channel for communication between two wireless devices, comprising:
- synchronizing a wireless modem with a wireless hub on a downstream channel of a plurality of downstream channels by synchronizing the symbol timing, forward error correction framing, and recognition of a synchronization message at the wireless modem, the channel of the plurality of downstream channels being transmitted from the wireless hub to a plurality of wireless modems including the wireless modem;
receiving at the wireless modem on the downstream channel a message comprising information regarding the parameters for communicating over each of the plurality of downstream channels;
determining a selected downstream channel of the plurality of downstream channels for communication with the wireless hub; and
resynchronizing the wireless modem with the wireless hub on the selected downstream channel of the plurality of downstream channels.
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Abstract
A system and method for communication between a wireless modem and wireless hub on a selected downstream channel of a plurality of downstream channels is provided. The selected downstream channel is selected by the wireless modem after receiving communication parameters for each of the downstream channels and selecting the selected downstream channel by determining the most efficient of the downstream channels at that time for downstream communication.
65 Citations
28 Claims
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1. A method for selecting a channel for communication between two wireless devices, comprising:
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synchronizing a wireless modem with a wireless hub on a downstream channel of a plurality of downstream channels by synchronizing the symbol timing, forward error correction framing, and recognition of a synchronization message at the wireless modem, the channel of the plurality of downstream channels being transmitted from the wireless hub to a plurality of wireless modems including the wireless modem;
receiving at the wireless modem on the downstream channel a message comprising information regarding the parameters for communicating over each of the plurality of downstream channels;
determining a selected downstream channel of the plurality of downstream channels for communication with the wireless hub; and
resynchronizing the wireless modem with the wireless hub on the selected downstream channel of the plurality of downstream channels. - View Dependent Claims (2, 3, 4, 5)
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6. A method for selecting a channel for communication between two wireless devices, comprising:
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receiving at a wireless modem on a downstream channel a message comprising information regarding the parameters for communicating over each of a plurality of upstream channels, the wireless modem already being synchronized with the downstream channel;
determining a selected upstream channel of the plurality of upstream channels for communication with the wireless hub; and
communicating from the wireless modem to the wireless hub on the selected upstream channel of the plurality of upstream channels. - View Dependent Claims (7)
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8. A method for communicating between two wireless devices in a communication system, comprising:
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receiving at a first wireless device on a downstream channel a message comprising information regarding parameters for communicating over each of a plurality of downstream channels, the first wireless device already being synchronized with the downstream channel;
synchronizing the first wireless device on a selected downstream channel of the plurality of downstream channels for receiving communication from the second wireless device; and
receiving communication from the second wireless device to the first wireless device on the selected upstream channel of the plurality of upstream channels. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21)
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17. A wireless communication system, comprising:
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a wireless hub configured to send downstream communications on at least one of a set of predefined downstream channels and receive upstream communications on at least one of a set of predefined upstream channels;
at least one wireless modem configured to receive said downstream communications, and send said upstream communications;
wherein said wireless modem comprises, an acquisition unit configured to acquire a predefined downstream channel transmitted by said hub and read DCD messages describing available downstream channels, a scanning unit configured to scan the available downstream channels, and a selection unit configured to select the best available downstream channel.
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22. A communication device, comprising:
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a hub configured to send downstream communications on at least one of a set of predefined downstream channels and receive upstream communications on at least one of a set of predefined upstream channels;
wherein;
said hub includes a DCD message generator that constructs at least one DCD message sent on said downstream channels; and
said at least one DCD message defines all downstream channels utilized by said hub. - View Dependent Claims (24, 25, 26, 27, 28)
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23. A modem unit for use in a communication system, comprising:
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a reception unit configured to receive downstream communications on a current downstream channel; and
a downstream channel selection unit to read DCD messages received by said reception unit and select a best available channel as said current downstream channel from priorities contained in said DCD messages.
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Specification