摘要
The Burst Time Plan(BTP) generation is the key for resource allocation in Broadband Satellite Multimedia(BSM) system.The main purpose of this paper is to minimize the system response time to users' request caused by BTP generation as well as maintain the Quality of Service(QoS) and improve the channel utilization efficiency.Traditionally the BTP is generated periodically in order to simplify the implementation of the resource allocation algorithm.Based on the analysis we find that Periodical BTP Generation(P-BTPG) method cannot guarantee the delay performance,channel utilization efficiency and QoS simultaneously,especially when the capacity requests arrived randomly.The Optimized BTP Generation(O-BTPG) method is given based on the optimal scheduling period and scheduling latency without considering the signaling overhead.Finally,a novel Asynchronous BTP Generation(A-BTPG) method is proposed which is invoked according to users' requests.A BSM system application scenario is simulated.Simulation results show that A-BTPG is a trade-off between the performance and signaling overhead which can improve the system performance insensitive to the traffic pattern.This method can be used in the ATM onboard switching satellite system and further more can be expended to Digital Video Broadcasting-Return Channel Satellite(DVB-RCS) system or IP onboard routing BSM system in the future.
The Burst Time Plan （BTP） generation is the key for resource allocation in Broadband Satellite Multimedia （BSM） system. The main purpose of this paper is to minimize the system response time to users＇ request caused by BTP generation as well as maintain the Quality of Service （QoS） and improve the channel utilization efficiency. Traditionally the BTP is generated periodically in order to simplify the implementation of the resource allocation algorithm. Based on the analysis we find that Periodical BTP Generation （P-BTPG） method cannot guarantee the delay performance, channel utilization efficiency and QoS simultaneously, especially when the capacity requests arrived randomly. The Optimized BTP Generation （O-BTPG） method is given based on the optimal scheduling period and scheduling latency without considering the signaling overhead. Finally, a novel Asynchronous BTP Generation （A-BTPG） method is proposed which is invoked according to users＇ requests. A BSM system application scenario is simulated. Simulation results show that A-BTPG is a trade-off between the performance and signaling overhead which can improve the system performance insensitive to the traffic pattern. This method can be used in the ATM onboard switching satellite system and further more can be expended to Digital Video Broadcasting-Return Channel Satellite （DVB-RCS） system or IP onboard routing BSM system in the future.
基金
Supported by the National Natural Science Foundation ofChina (No. 60972061,60972062,and 61032004)
the Na-tional High Technology Research and Development Program of China ("863" Program) (No. 2008AA12A204,2008AA12Z307)
Natural Science Foundation of Jiangsu Province (BK2009060)
the"Triple Three" High Level Talent Development Plan of Jiangsu Province
作者简介
Communication author： Feng Shaodong, born in 1981, male, Ph.D.. Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007, China. Emaih fengshaodong1981Q 163.com.
