TY - CHAP T1 - Small World VoIP T2 - Mobile Computing, Applications, and Services: Second International ICST Conference, MobiCASE 2010, Santa Clara, CA, USA, October 25-28, 2010, Revised Selected Papers Y1 - 2010 A1 - Yang, Xiaohui A1 - Stavrou, Angelos A1 - Ram Dantu A1 - Wijesekera, Duminda ED - Gris, Martin ED - Yang, Guang KW - closeness KW - electing KW - mobility KW - optimize KW - Peer-to-peer KW - popular KW - small world KW - VoIP AB -

We present the analysis and design of a Small World VoIP system (SW-VoIP) which is geared towards customers that are communicating with their Small World of social contacts. We use the term Small World to refer to the Peer-to-Peer (P2P) network of a client and his contacts both incoming and outbound. We reconstruct the small world of a user by collecting calling patterns over a configurable period of time. We enable user mobility by using a stepwise social identity to an IP address binding propagation model. We propose an efficient algorithm to locate users by electing popular users and leveraging the users closeness. We also introduce a self-stabilized load balancing mechanism to optimize the system performance under heavy network traffic. We evaluate our SW-VoIP system performance by simulating the user’s lookup process using real-world telephone logs. Our experimental results show that our SW-VoIP system offers a better performance in optimizing the required routing path and reducing the average lookup delay when compared to traditional, non small-world P2P VoIP systems.

JF - Mobile Computing, Applications, and Services: Second International ICST Conference, MobiCASE 2010, Santa Clara, CA, USA, October 25-28, 2010, Revised Selected Papers PB - Springer Berlin Heidelberg CY - Berlin, Heidelberg SN - 978-3-642-29336-8 UR - http://dx.doi.org/10.1007/978-3-642-29336-8_8 ER -