| 一种蜂窝无线网络中的子信道合并多业务切换算法 |
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| 引用本文： | 李剑,胡波. 一种蜂窝无线网络中的子信道合并多业务切换算法[J]. 复旦学报(自然科学版), 2006, 45(4): 506-511 |
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| 作者姓名： | 李剑 胡波 |
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| 作者单位： | 复旦大学,电子工程系,上海,200433;复旦大学,电子工程系,上海,200433 |
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| 摘 要： | 从提高资源使用效率的角度出发,结合切换保护信道算法,提出一种多载波通信系统中的子信道合并切换算法,采用多维Markov链对多业务蜂窝网络通信系统中的切换保护信道算法性能进行了建模分析,得到了切换阻塞概率等系统性能关键参数的解析结果;与切换保护信道算法相比,在对其他类型呼叫性能影响很小的前提下,采用新算法,大大改善了数据业务呼叫切换的性能.算法仿真结果验证了理论分析的正确性.该算法还可以与其他资源预留切换算法相结合,改善其性能.
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| 关 键 词： | 通信技术 蜂窝无线网络 多业务切换 多维Markov链 |
| 文章编号： | 0427-7104（2006）04-0506-06 |
| 收稿时间： | 2006-01-23 |
| 修稿时间： | 2006-01-23 |
A Multi-Service Handoff Algorithm of Sub-Channel Combination Used in Wireless Cellular Network |
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| LI Jian,HU Bo. A Multi-Service Handoff Algorithm of Sub-Channel Combination Used in Wireless Cellular Network[J]. Journal of Fudan University(Natural Science), 2006, 45(4): 506-511 |
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| Authors: | LI Jian HU Bo |
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| Affiliation: | Department of Electronic Engineering, Fudan University, Shanghai 200433, China |
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| Abstract: | To improve the efficiency of the resource utilization,a handoff algorithm of sub-channel combination used in multi-carrier communication system is proposed for the multi-service guard channel handoff algorithm.Multi-dimensional Markov chain is used to analyze the performances of multi-service guard channel handoff algorithm.Analytical results of the key parameters such as handoff blocking probability are analytically obtained.Simulation confirms the theoretical analysis,showing the proposed scheme of sub-channel combination improves the handoff performance as compared with the guard channel algorithm.The handoff blocking probability is decreased while the other communication quality remains unchanged during the handoff.The sub-channel combination scheme can also work with the other resource reservation handoff schemes to improve their performances. |
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| Keywords: | communication technology wireless cellular network multi-service handoff multi-dimensional Markov chain |
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