Abstract
The network topology and interferences causes significant effects on data collection and hence on sensors’ energy usage. Various approaches using single channel, multichannel and convergecasting had already been proposed. In this chapter, we survey contention-free Time Division Multiple Access (TDMA) based scheduling protocols for such data collection applications over tree-based routing topologies. We classify the algorithms according to their common design objectives, identifying the follow-ing four as the most fundamental and most studied with respect to data collection in WSNs
