Earticle

초록

영어

The paper proposes a vertical handoff algorithm based on differential pre-decision and improved utility-function method. This algorithm is relied on utility function to improve its two parameters, which are received signal strength and bandwidth, by using their normalized values to determine the target network. Then, it enters judgment stage of vertical handoff, where introduce differential prediction algorithm that has good accuracy to further constraint the switching decision through taking a prediction of the RSS into account. The purpose is to reduce the impact of ping-pong effect and to obtain accurate handoff. The paper applies MATLAB software to gain the simulated analysis based on this algorithm, And compares the performance of this switching algorithm with utility function algorithm to demonstrate its priority. Simulation results shows that the proposed algorithm can significantly reduce the impact of the ping-pong effect and improve the switching efficiency and the system performance as well in heterogeneous network environments.

목차

Abstract
 1. Introduction
 2. Utility Function
  2.1 General Utility Function
  2.2 Improved Utility Function
 3. The Introduction of Differential Pre-Decision to Vertical Handoff Algorithm
  3.1 Differential Prediction Algorithm
  3.2 Pre-Decision Model
 4. Simulation
  4.1 Heterogeneous Network Environment Settings
  4.2 Simulation Results and Performance Analysis of Algorithm
 5. Conclusion
 Acknowledgements
 References

키워드

저자

• Chenghai Yu [ Zhejiang Sci-Tech University ]
• Dawei Ma [ Zhejiang Sci-Tech University ]
• Feng Wang [ Zhejiang Sci-Tech University ]
• Xiaoan Bao [ Zhejiang Sci-Tech University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605