Open AccessA QoS Aware Vertical Handover In Mobile Network
Author(s) -
S. Jayalakshmi,
Kumari Khushboo,
G M Kirubhashri,
Mark Manuel
Publication year - 2012
Publication title -
international journal of communication networks and security
Language(s) - English
Resource type - Journals
ISSN - 2231-1882
DOI - 10.47893/ijcns.2012.1038
Subject(s) - handover , computer science , computer network , rss , vertical handover , wireless network , heterogeneous network , wireless , quality of service , access network , bandwidth (computing) , heterogeneous wireless network , telecommunications , operating system
The convergence of heterogeneous wireless access technologies characterizes the 4G wireless networks. In such converged systems, the seamless and efficient handoff between different access technologies (vertical handoff) is essential and remains a challenging problem. The heterogeneous co-existence of access technologies with largely different characteristics creates a decision problem of determining the “best” available network at “best” time to reduce the unnecessary handoffs. This project proposes a dynamic decision model to decide the “best” network at “best” time moment to handoffs. The proposed dynamic decision model make the right vertical handoff decisions by determining the “best” network at “best” time among available networks based on, dynamic factors such as “Received Signal Strength(RSS)” of network and SNR(Signal-to-Noise Ratio), Link capacity(offered bandwidth) and power consumption. This model not only meets the individual user needs but also improves the whole system performance by reducing the unnecessary handoffs.