| 基于自适应小区选择的切换控制算法研究 |
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| 引用本文： | 马秀荣,张会龙,白媛,程云翔.基于自适应小区选择的切换控制算法研究[J].通信学报,2011(9):9-17. |
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| 作者姓名： | 马秀荣 张会龙 白媛 程云翔 |
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| 作者单位： | 天津理工大学计算机与通信工程学院通信器件教育部工程研究中心;天津理工大学薄膜电子与通信器件天津市重点实验室; |
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| 基金项目： | 国家高技术研究发展计划(“863”计划)基金资助项目(2008AA011004); 天津市科技创新专项基金资助项目(10FDZDGX00400)~~ |
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| 摘 要： | 针对现有切换控制算法的不足,提出了一种基于自适应小区选择的优先级信道预留切换算法。该算法在切换时根据各小区的负载情况,通过调整导频功率使小区间负载均衡,以系统效用最大化为目标,进行基于预留信道的优先级切换。系统效用通过多选择多维背包算法建模实现,预留信道的优先级切换通过马尔科夫排队模型实现。通过多选择多维背包建模、马尔科夫排队建模与实验仿真表明,该算法的性能在相邻小区间负载不均衡的情况下比目前切换控制所用的优先级信道预留切换算法明显提高。在负载不均衡度为6时,话音业务阻塞率与数据业务分组丢失率比目前算法分别降低0.2%和3%左右,数据分组平均最大等待时间比目前算法降低0.15s,系统小区平均吞吐量最大时升高80kbit/s/cell/MHz。
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| 关 键 词： | 切换 优先级 阻塞率 小区选择 |
Research on handoff control algorithm based on adaptive cell selection |
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| MA Xiu-rong,ZHANG Hui-long,BAI Yuan,CHENG Yun-xiang.Research on handoff control algorithm based on adaptive cell selection[J].Journal on Communications,2011(9):9-17. |
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| Authors: | MA Xiu-rong ZHANG Hui-long BAI Yuan CHENG Yun-xiang |
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| Affiliation: | MA Xiu-rong1,2,ZHANG Hui-long1,BAI Yuan1,CHENG Yun-xiang1,2(1.Engineering Research Center of Communication Devices Ministry of Education,School of Computer and Communication Engineering,Tianjin University of Technology,Tianjin 300384,China,2.Tianjin Key Laboratory of Film Electronic and Communication Device,China) |
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| Abstract: | Aiming at overcoming the shortages of the current handoff control algorithm,a channel reservation for priority handoff algorithm based on adaptive cell selection was proposed.According to the load in cells,it dynamically adjusts the pilot power to achieve the load balance between different cells and takes the system utility maximization for priority handoff based on reserved channels.The system utility was implemented by the model of multi-choice multidimensional knapsack algorithm,and the priority handoff ... |
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| Keywords: | handoff priority blocking rate cell selection |
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