Resource Management using Route Selection and Vertical Handoff Algorithm in Next Generation All-IP Wireless Network

The present work is a resource management scheme using route selection algorithm and vertical handoff algorithm for next generation all-IP wireless network. It considers two different variant for scheduling and resource management in next generation all-IP wireless network. The present work considers the integration of WLAN domain and cellular domain under the control of global mobility agent. A vertical handoff controller is maintained centrally at global mobility agent to trigger route selection algorithm and network initiated vertical handoff algorithm. When a mobile node wants to initiate a session or the remaining battery power life time of a mobile node becomes equal to a threshold, it sends a route request message to the vertical handoff controller. The vertical handoff controller triggers route selection algorithm to select the most appropriate route for the mobile node so that the transmission or reception of the data packets is completed within the remaining battery power life time of the mobile node. The proposed scheme considers two different variants for scheduling and resource management. The route selection algorithm selects a single route for all the sessions of a mobile node provided by the desired resource to maintain transmission or reception of all the sessions is available in variant 1. Otherwise all the sessions of a mobile node is considered as loss of sessions. The route selection algorithm selects route for each session of a mobile node independently if the desired resource to maintain transmission or reception of a session is available in variant. Otherwise only the corresponding session of the mobile node is considered as loss of session. The vertical handoff controller also triggers vertical handoff algorithm in case the power consumption of a domain crosses a threshold. This algorithm helps to achieve load balancing and also helps to maintain the packet loss probability, call block probability, average delay and average cost of the network almost constant. Results based on a detailed performance evaluation study are also presented to demonstrate the efficacy of the proposed scheme.