NETWORK TRAFFIC LOAD BASED HANDOFF ALGORITHM (NTL-HA) FOR GGSN-BASED TIGHT COUPLING ARCHITECTURE

Nowadays the attention of the standardization bodies and research groups is shifting towards the integration of wireless access networks such as, the UMTS and Wireless LAN networks. These networks show complimentary characteristic to each other by avoiding the weakness of each individual network. Therefore, the integration of these networks can come up with the better performance. The support of smooth call connectivity and effective resource management is the cores issue in the heterogeneous network platform. Therefore, in this paper the Network Traffic Load based Handoff Algorithm (NTL-HA) for GGSN-based Tight coupling Architecture is introduced. The NTL-HA use the advance handoff algorithm, in which the network load is regarded as the key parameter for the network selection. The NTL-HA can successfully improve the network performance in terms of the average-user throughput of data users, the end-to-end delay of voice users, furthermore decreases wrong handoff probability and wrong admission probability of wireless users in comparison to the existing tight coupling architecture (ETCA).