Methods and Systems for Wireless Transmission of Data Between Network Nodes

摘要

A network of environmental sensor nodes is proposed in which data is transmitted wirelessly between the nodes using a rateless erasure code with a redundancy which is matched to the effective data rate, thereby permitting distanceless link transmissions. The wireless sensor networks is suitable to be sparsely deployed over wide area. A communication protocol is proposed to efficiently coordinate the distanceless link transmissions. A new metric (expected distanceless transmission time) is proposed for routing selection. The distanceless transmissions are well-adapted to low duty-cycled sensor networks.

主权项

1. A method for communicating data within a network, the network comprising at least one sink node and plurality of sensor nodes distributed in an environment, each sensor node having at least one environmental sensor device for generating sensor data relating to the environment;
the method comprising the steps of: the sensor nodes encoding the sensor data within a data stream using a rateless code, and broadcasting the data stream; and another of the nodes receiving the data stream, and decoding the sensor data; wherein sensor data generated by any of the sensor nodes is relayed from node-to-node to reach the sink node.