| 移动WiMAX网络下行链路TCP吞吐量公平性的跨层优化 |
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| 引用本文： | 宋建锋,李建东.移动WiMAX网络下行链路TCP吞吐量公平性的跨层优化[J].电子与信息学报,2010,32(7):1548-1552. |
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| 作者姓名： | 宋建锋 李建东 |
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| 作者单位： | 西安电子科技大学综合业务网理论和关键技术国家重点实验室,西安,710071 |
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| 基金项目： | 国家杰出青年科学基金，国家973计划项目，长江学者和创新团队发展计划项目，国家自然科学基金，高等学校创新引智111计划，国家863计划项目，国家重点实验室专项基金，教育部科学技术研究 |
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| 摘 要： | 该文提出了一种移动WiMAX网络中的TCP公平性跨层优化模型，设计了基于此模型的cross-layer TCP改进协议。利用端节点链路层的速率信息和在基站BS(Base Station)处预分配ACK分组所需带宽的策略改善了下行终端的QoS (Quality of Service)指标，保证了下行终端和上行终端的吞吐量公平性。仿真结果表明cross- layer-TCP改进协议能够在保持原有系统吞吐量的前提下改善下行终端的公平性。
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| 关 键 词： | 无线通信 跨层优化 移动WiMAX TCP 公平性 |
| 收稿时间： | 2009-7-20 |
| 修稿时间： | 2010-1-29 |
Cross-Layer TCP Throughput Fairness Optimization for Downlink in Mobile WiMAX |
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| Song Jian-feng,Li Jian-dong.Cross-Layer TCP Throughput Fairness Optimization for Downlink in Mobile WiMAX[J].Journal of Electronics & Information Technology,2010,32(7):1548-1552. |
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| Authors: | Song Jian-feng Li Jian-dong |
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| Affiliation: | State Key Laboratory of Integrated Service Networks Xidian University, Xi’an 710071, China |
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| Abstract: | A cross-layer TCP fairness optimization model in mobile WiMAX is proposed, under which a TCP protocol, cross-layer TCP, is designed. The rate information from link layer of the mobile nodes and the strategy of preallocation bandwidth for ACK packet at the base station are both used to improve the quality of service of the downlink nodes, which gives throughput fairness to the downlink nodes and the uplink nodes. Experiments show that cross-layer TCP protocol can improve the fairness of the downlink nodes under the same system throughtput. |
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| Keywords: | Wireless communication Cross-layer optimization Mobile WiMAX TCP Fairness |
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