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Traffic Management Algorithm and Adaptive Handover Initiation Time for Dynamic Traffic Load Distribution


Azita Laily Yusof, Mahamod Ismail, Norbahiah Misran


Vol. 8  No. 7  pp. 203-207


In next-generation all-IP based wireless systems, Radio Resource Management (RRM) algorithms are required in order to effectively control resources and maintain the acceptable service quality. RRM algorithms are needed to guarantee the required Quality of Service (QoS), to supply the optimum coverage area and to offer high capacity. Therefore, there is a critical need for RRM to provide efficient utilisation of the air interface resources. A users, with a large range of mobility, will access the network and will be able to seamlessly reconnect to different networks, even within the same session. The core network will enable inter- and intra-access handover. In the next-generation wireless systems coverage/capacity will change dynamically to accommodate changing user patterns. Users will automatically move from congested cell to allow the network to dynamically self-balance. The objective of this research is to propose a handover-based traffic management algorithm in order to adaptively controls the handover initiation time according to the load status of cells. Under the proposed algorithm, the signaling burden is evenly distributed and the regional network boundary is dynamically adjusted according to the up-to-date mobility and handover types for each terminal. A simulation model is developed to investigate the handover performance. Simulation results show that the proposed algorithm can reduce call drop rate of handoff calls and the use of adaptive value of received signal strength avoids too early or too late initiation of the handover process.


Radio Resource Management, Quality of Service, inter- and intra-access handover, handover-based traffic management, adaptive handover time.