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| Authors: | Marco Zimmerling, Federico Ferrari, Luca Mottola, Thiemo Voigt, Lothar Thiele |
| Group: | Computer Engineering |
| Type: | Inproceedings |
| Title: | pTunes: Runtime Parameter Adaptation for Low-power MAC Protocols |
| Year: | 2012 |
| Month: | April |
| Pub-Key: | ZFMVT2012 |
| Book Titel: | Proceedings of the 11th International Conference on Information Processing in Sensor Networks (IPSN) |
| Keywords: | SN, Runtime Adaptation, Parameter Optimization, MAC Protocol, Multi-objective, Centralized, End-to-end, Sensor Network |
| Publisher: | ACM/IEEE |
| Abstract: | We present pTunes, a framework for runtime adaptation of low-power MAC protocol parameters. The MAC operating parameters bear great influence on the system performance, yet their optimal choice is a function of the current network state. Based on application requirements expressed as network lifetime, end-to-end latency, and end-to-end reliability, pTunes automatically determines optimized parameter values to adapt to link, topology, and traffic dynamics. To this end, we introduce a flexible modeling approach, separating protocol-dependent from protocol-independent aspects, which facilitates using pTunes with different MAC protocols, and design an efficient system support that integrates smoothly with the application. To demonstrate its effectiveness, we apply pTunes to X-MAC and LPP. In a 44-node testbed, pTunes achieves up to three-fold lifetime gains over static MAC parameters optimized for peak traffic, the latter being current---and almost unavoidable---practice in real deployments. pTunes promptly reacts to changes in traffic load and link quality, reducing packet loss by 80% during periods of controlled wireless interference. Moreover, pTunes helps the routing protocol recover quickly from critical network changes, reducing packet loss by 70% in a scenario where multiple core routing nodes fail. |
| Location: | Beijing, China |
| Award: | Best Paper Runner-up |
| Resources: | [BibTeX] [ External LINK ] |
