Adaptive data rate control for narrowcast networks

Details Adaptive data rate control for narrowcast networks Adaptive data rate control for narrowcast networks

2011-03-29

2011-03-29

Appiah, Charles N (Department: 2617)

Multiplex communications

Communication over free space

Repeater

C370S252000, C370S316000, C370S317000, C370S318000, C370S329000, C455S427000, C455S430000, C455S012100, C455S013100, C455S013300, C455S013400, C455S016000, C455S063100

Reexamination Certificate

active

07916680

ABSTRACT:
A system to provide narrowcast communications uses adaptive data rate control to individual subscribers such that the effects of precipitation or other link conditions, which are not common to all subscribers, is mitigated. The invention takes advantage of the fact that the narrowcast data consist of packets which are individually addressed to specific subscribers, or groups of subscribers. The narrowcast data is communicated on a plurality of channels, each of potentially differing data rates. The subscribers are assigned a particular channel, based upon their link quality, to receive packets addressed to them. The lower data rate channel will be less affected by adverse link conditions and are hence assigned to subscribers most likely to incur adverse link conditions.

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