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The information gradient-based routing and navigation protocols have been proved to be effective when collecting data from the distributed wireless sensor networks, because the data collector can achieve the global objective through local greedy decision based on the information gradient. An efficient method to establish this information gradient is to solve a discrete approximation to the harmonic...
Aiming at shortcomings of existing handover algorithms which do not apply to voice and data mix traffic, and considering the wide use of TD-SCDMA technology in personal mobile communications, a baton handover strategy with channel reservation and preemptive priority mechanism is proposed. The strategy reserves channels for voice handover calls, sets different priorities to different handover calls...
The effects of the IP telephone's entrance into the long-distance telephone service market in China were analyzed empirically. It is the high speed expansion of the Internet users, as well as the relatively lower call fees, that has promoted the IP telephone's blast into that market in recent years. The entrance of the IP telephone has changed the structure of the market into a triangular framework...
We consider data-streaming from an access point to multiple receivers, which is modeled as packet erasure channel. A simple network coding is shown to achieve larger rate region than without network coding, using minimal control information. The performance is characterized exactly using state transition graph. The scheme is then mapped to an information theoretic formulation for broadcast channel...
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