Journal of Xidian University ›› 2021, Vol. 48 ›› Issue (3): 63-70.doi: 10.19665/j.issn1001-2400.2021.03.008

• Information and Communications Engineering & Mechanical Engineering • Previous Articles     Next Articles

Video multipath transmission mechanism with load balancing in the FiWi network

LÜ Yi1,2,3(),ZHU Bo1,2,3(),WU Dapeng1,2,3()   

  1. 1. School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China
    2. Chongqing Key Laboratory of Optical Communication and Networks,Chongqing 400065,China
    3. Chongqing Key Laboratory of Ubiquitous Sensing and Networking,Chongqing 400065,China
  • Received:2020-12-03 Online:2021-06-20 Published:2021-07-05
  • Contact: Bo ZHU E-mail:luyi@cqupt.edu.cn;zhubo1202@163.com;wudp@cqupt.edu.cn

Abstract:

Aiming at the differentiated needs of users and the problem of video service interruption caused by the local overload of the converged network,a load-balanced video transmission mechanism is proposed.First,the split multipath routing protocol is improved to obtain the path selection model according to the front-end structural characteristics of the optical fiber wireless access network;second,we calculate the path differential delay and the video transmission delay on wireless side,and set their threshold as the quality of the experience constraint.Finally,while considering the quality of user experience,a particle swarm optimization algorithm with a multi-stage penalty function is used for video distribution.Simulation results show that the proposed mechanism is better than the throughput-aware load-sensing algorithms,enhances delay-control load distribution algorithms and delay-energy-quality aware multipath algorithms,and that it can effectively balance the network load and alleviate network congestion while avoiding user loss.

Key words: fiber-wireless access network, load balancing, multipath, quality of experience constraint

CLC Number: 

  • TP393.04