Abstract

Wireless and mobile network technologies often impose severe resource limitations, resulting in poor and often unsatisfactory performance of the commonly used wire-less networking protocols. For instance, power and memory/storage constraints of miniaturized network nodes reduce the throughput and increase the network latency. Through various approaches and technological advances, researchers at-tempt to compensate somehow for such hardware limitations. However, this is not always necessary. Sometimes, the required performance of such networks does not need to adhere to the level of services that would be required for performance-critical applications. For example, for some applications of sensor networks, min-imal latency is not a critical factor and it could be traded off for a more limited resource, such as energy or throughput. Thus, to reduce the energy expenditure, the transmission range of such sensor nodes would be quite short, leading to net-work topologies in which the average number of neighbors of the network nodes is very small. If the sensor nodes are mobile, then most of the time a node has no neighbors; only infrequently another node migrates into its neighborhood. This

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