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http://dx.doi.org/10.5573/ieie.2015.52.1.032

Mutual-Backup Architecture of SIP-Servers in Wireless Backbone based Networks  

Kim, Ki-Hun (Samsung Thales, Graduate School of IT Convergence, Ajou University)
Lee, Sung-Hyung (Department of Electrical and Computer Engineering, Ajou University)
Kim, Jae-Hyun (Department of Electrical and Computer Engineering, Ajou University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.1, 2015 , pp. 32-39 More about this Journal
Abstract
The voice communications with wireless backbone based networks are evolving into a packet switching VoIP systems. In those networks, a call processing scheme is required for management of subscribers and connection between them. A VoIP service scheme for those systems requires reliable subscriber management and connection establishment schemes, but the conventional call processing schemes based on the centralized server has lack of reliability. Thus, the mutual-backup architecture of SIP-servers is required to ensure efficient subscriber management and reliable VoIP call processing capability, and the synchronization and call processing schemes should be changed as the architecture is changed. In this paper, a mutual-backup architecture of SIP-servers is proposed for wireless backbone based networks. A message format for synchronization and information exchange between SIP servers is also proposed in the paper. This paper also proposes a FSM scheme for the fast call processing in unreliable networks to detect multiple servers at a time. The performance analysis results show that the mutual backup server architecture increases the call processing success rates than conventional centralized server architecture. Also, the FSM scheme provides the smaller call processing times than conventional SIP, and the time is not increased although the number of SIP servers in the networks is increased.
Keywords
Wireless Backbone; VoIP; Session Initiation Protocol; Backup Server; Flood Search Message;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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