Communication in Wireless Sensor Networks generally is the most energy consuming task. Retrieving query results from deep within the sensor network therefore consumes a lot of energy and hence shortens the network's lifetime. In this work optimizations for processing queries by using adaptive caching structures are discussed. Results can be retrieved from caches that are placed nearer to the query source. As a result the communication demand is reduced and hence energy is saved by using the cached results. To verify cache coherence in networks with non-reliable communication channels, an approximative update policy is presented. A degree of result quality can be defined for a query to find the adequate cache adaptively.
|Title of host publication||2010 Eleventh International Conference on Mobile Data Management|
|Number of pages||2|
|Publication status||Published - 01.05.2010|
|Event||11th IEEE International Conference on Mobile Data Management - Kansas City, United States|
Duration: 23.05.2010 → 26.05.2010
Conference number: 81312