Master Thesis defence - Zhitao He: Implementation and Evaluation of the SP Sensor Network Link-level Abstraction for Contiki

Supervisors: Adam Dunkels, Thiemo Voigt (SICS) Examiner: Ingo Sander Opponents: Vitaliy Kuhar, Robert Andersson

SP is a link abstraction layer between the network layer and the link layer for sensor networks. SP was proposed as the core of a future-oriented sensor node architecture that allows flexible and optimized combination between multiple coexisting protocols. This thesis implements the SP sensornet protocol on the Contiki operating system in order to: evaluate the effectiveness of the original SP services; explore further requirements and implementation trade-offs uncovered by the original proposal. We analyze the original SP design and the TinyOS implementation of SP to design the porting to Contiki. We implement the data sending and receiving part of SP using Contiki processes, and the neighbor management part as a group of global routines. The evaluation consists of a single-hop traffic throughput test and a multi-hop convergecast test. Both tests are conducted using both simulation and experimentation. We conclude from the evaluation results that SP's link-level abstraction effectively improves modularity in protocol construction without sacrificing performance, and our SP implementation on Contiki lays a good foundation for future protocol innovations in wireless sensor networks. Welcome!

Friday, June 8, 2007, 15:00