Earticle

초록

영어

In order to optimize the utilization of limited resources, the operators have already addressed to deploy their services in heterogeneous networks integrated different Radio Access Technologies (RAT), e.g. WLAN/WiMAX/WCDMA. Vertical handoffs (VHO) as a key problem should be overcome while mobile users are moving in heterogeneous networks. In existing works, resource assignment depends on the packet’s size, which is usually defined a fix length. This paper proposes an analytical model for evaluating the VHO performance. In the model, resources are proportionally assigned to real-time services (RS) and to non real-time services (NRS) by a resource factor m, which can be defined as any value. The performances on blocking probability and on throughput are derived and evaluated with different values of m under the restriction of resources. For enhancing the effect of VHO, the Random Waypoint Model on the border (RWPB) is implemented in the simulation, which enforces the mobile users residing near the border of networks. Simulation results demonstrate that with a greater value of m, the blocking probability slightly increases while the total throughput is significantly improved.

목차

Abstract
 1. Introduction
 2. Related Works
 3. System Model and Performance Analysis
  3.1. Analysis of Blocking Probability
  3.2. Analysis of Throughput
 4. Performance Evaluation and Analysis
  4.1. Evaluation of Blocking Probability
  4.2. Evaluation of Throughput
 5. Conclusion
 ACKNOWLEDGEMENTS
 References

키워드

저자

• Yanling Wu [ School of Computing, Dongguan University of Technology, Dongguan, Guangdong, 523808, China ]
• Ming Li [ School of Electronic and Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, China) ]
• Guobin Zhang [ School of Electronic and Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, China) ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Multimedia and Ubiquitous Engineering

• 간기

  월간

• pISSN

  1975-0080

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605