Wireless Multihop Transmission with Buffering in Neighbor Sensor Nodes for Shorter Delay

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Executive Summary

In wireless multihop transmission of sensor data, in addition to avoidance of contentions and collisions of wireless signals, available capacity of communication buffers in sensor nodes should be considered. If a communication buffer in a next-hop wireless sensor node is filled, it is impossible for a wireless sensor node to forward a message with sensor data to the next-hop one. Here, the sensor node stores the message to its communication buffer and waits for the buffer in the next-hop sensor node to have enough space. The buffered messages are required to be transmitted to a sink node as soon as possible.

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