

FOLLOWUS
1.Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
2.Professional Graduate School of Embedded Technology, Tokai University, Tokyo 108-8619, Japan
[ "Yi-han XU, E-mail: xuyihan86@gmail.com" ]
[ "Chee-Onn CHOW, E-mail: cochow@um.edu.my" ]
[ "Mau-Luen THAM, E-mail: thammauluen@siswa.um.edu.my" ]
[ "Hiroshi ISHII, E-mail: ishii164@tokai.ac.jp" ]
Received:01 August 2013,
Revised:2013-12-19,
Published:2014-01
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Yi-han XU, Chee-Onn CHOW, Mau-Luen THAM, et al. An enhanced framework for providing multimedia broadcast/multicast service over heterogeneous networks[J]. Frontiers of Information Technology & Electronic Engineering, 2014, 15(1): 63-80.
Yi-han XU, Chee-Onn CHOW, Mau-Luen THAM, et al. An enhanced framework for providing multimedia broadcast/multicast service over heterogeneous networks[J]. Frontiers of Information Technology & Electronic Engineering, 2014, 15(1): 63-80. DOI: 10.1631/jzus.C1300205.
研究目的
2
多媒体广播多播服务(MBMS)因其节省网络资源的特性,已被视为有效利用此类资源的候选方案。另一方面,下一代移动网络(NGMN)的发展趋势将是融合多种无线接入技术(RAT),从而优化网络的整体性能。垂直切换的性能将直接影响移动用户的体验。与传统的垂直切换问题相比,我们面临的问题是如何在异构网络间无缝式地传输广播/多播服务,这有更高研究价值,同时更具挑战性。
创新方法
2
提出了一个新的网络实体:媒介独立广播多播服务中心,它是基于对多媒体广播多播服务(MBMS)和媒介独立信息服务(MIIS)的扩展和增强为移动用户提供异构网络中广播/多播业务的无缝切换服务。此外,提出了选择最佳目标网络和最佳小区传输模式的方案。这两项方案都是是基于一种负载感知的网络容量估计算法。
研究手段
2
本文提出的选择最佳目标网络和最佳小区传输模式的算法是基于一种负载感知的网络容量估计算法。该算法平衡了小区间的数据流量(如图14),从而提高了系统的性能(如图11)。同时,最重要的是提高了带宽利用率,这一性能也是提出MBMS的初衷(如图15)。
重要结论
2
仿真实验表明,本文提出的方案具有在异构网络中提供无缝式多媒体广播多播服务的能力,在丢包率、吞吐量、切换时延、小区负载、带宽利用率和峰值信噪比等性能方面均有很大提高。
Multimedia broadcast multicast service (MBMS) with inherently low requirement for network resources has been proposed as a candidate solution for using such resources in a more efficient manner. On the other hand
the Next Generation Mobile Network (NGMN) combines multiple radio access technologies (RATs) to optimize overall network performance. Handover performance is becoming a vital indicator of the quality experience of mobile user equipment (UE). In contrast to the conventional vertical handover issue
the problem we are facing is how to seamlessly transmit broadcast/multicast sessions among heterogeneous networks. In this paper
we propose a new network entity
media independent broadcast multicast service center (MIBM-SC)
to provide seamless handover for broadcast/multicast sessions over heterogeneous networks
by extensions and enhancements of MBMS and media independent information service (MIIS) architectures. Additionally
a network selection scheme and a cell transmission mode selection scheme are proposed for selecting the best target network and best transmission mode. Both schemes are based on a load-aware network capacity estimation algorithm. Simulation results show that the proposed approach has the capability to provide MBMS over heterogeneous networks
with improved handover performance in terms of packet loss rate
throughput
handover delay
cell load
bandwidth usage
and the peak signal-to-noise ratio (PSNR).
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