Researchers at Edinburgh University have developed a new metric for assessing the capability of nodes on wireless networks to transmit data (relay capacity), coupled to a new routing mechanism. This increases the likelihood that a route remains open for the duration of data transfer, improving connectivity, whilst providing energy savings.
Current routing schemes are based on minimal total transmission power and do not guarantee that the route can survive for the duration of the transfer. The new technique increases route survival probability (RSP), improving throughput and efficiency of the network, as well as reducing the power usage of battery-operated devices.
If the source node cannot find a route to support the whole transmission task, it divides up the task. Therefore, initiation of data transfer guarantees that the nodes en route have sufficient capacity to complete the transaction. This technology increases RSP and supports continuous services by providing longer node lifetime.
The key benefits are increased energy efficiency, improved quality of service, prolonging battery lifetime of devices such as computers and mobile phones, and better signal and coverage for wireless networks
The technique could be applied to mobile wireless networks to enable dynamic communication between the emergency services, for the development of sensor networks such as smoke or heat sensors in buildings; or for wireless surveillance networks monitoring traffic, or to provide security.
The technology is available to license for applications including mobile/multi-media communications and for the development of wireless networks.
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