Asymmetrical Handover Algorithm for Broadcast Services in Broadband Wireless Multimedia Systems

被引：0
|
作者：
Wang, Min [1 ]
Feng, Chunyan [1 ]
Zhang, Tiankui [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Beijing 100088, Peoples R China
来源：
2011 6TH INTERNATIONAL ICST CONFERENCE ON COMMUNICATIONS AND NETWORKING IN CHINA (CHINACOM) | 2011年
关键词：
broadband wireless multimedia system; handover algorithm; quality of service; point-to-multipoint; point-to-point;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
To guarantee the quality of service (QoS) of broadcast services in broadband wireless multimedia (BWM) systems, a novel seamless broadcast cell asymmetrical handover (BCAH) algorithm is proposed. BCAH adopts the asymmetrical handover between the broadcast base station (BBS) with point-to-multipoint (PTM) transmission and the cell base station (CBS) with point-to-point (PTP) transmission. The handover from BBS PTM to CBS PTP takes into account the handover delay for accurate execution to maximize the utilization of the broadcast resources. The handover from CBS PTP to BBS PTM reduces unnecessary handover by considering the handover threshold predefined with QoS requirement of broadcast services to avoid ping-pong effect. BCAH maximizes the resource utilization while providing the continuity of broadcast services with QoS guarantees. Simulation results show that the proposed algorithm improves system performance in terms of throughput and delay.
引用
收藏
页码：913 / 917
页数：5
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