| 支持权重优先等级的自适应接入机制 |
| |
| 引用本文： | 陈彩霞,李春雨,何书前,邓正杰,杨琳,石春. 支持权重优先等级的自适应接入机制[J]. 计算机工程与设计, 2019, 40(6): 1535-1539 |
| |
| 作者姓名： | 陈彩霞 李春雨 何书前 邓正杰 杨琳 石春 |
| |
| 作者单位： | 海南师范大学信息科学技术学院,海南海口,571158;三亚学院信息与智能工程学院,海南三亚,572022;海南师范大学信息科学技术学院,海南海口571158;厦门大学水声通信与海洋信息技术教育部重点实验室,福建厦门361005 |
| |
| 基金项目： | 海南省自然科学基金;海南省自然科学基金;海南省自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金;国家自然科学基金;国家国际科技合作专项基金;海南省重大科技项目 |
| |
| 摘 要： | 研究IEEE 802.11e协议中吞吐量权重比例公平性问题,提出基于业务负载增量估计算法的自适应分布式信道接入机制。给出竞争窗口(CW)关于业务负载线性调整规则,建立接入参数与动态网络条件的关联;提出业务负载的增量估计算法;通过引入优先等级因子参数和多阈值设置,支持吞吐量权重比例的优先等级(WPL)并获得更好的总吞吐量性能。CW决定了节点接入信道的概率,保证了吞吐量权重公平性性能。仿真结果表明了自适应接入机制的有效性和可扩展性。
|
| 关 键 词： | IEEE 802.11 媒体接入控制 权重公平性 空闲时隙间隔 增量估计 |
Adaptive access mechanism for supporting weighted priority |
| |
| CHEN Cai-xia,LI Chun-yu,HE Shu-qian,DENG Zheng-jie,YANG Lin,SHI Chun. Adaptive access mechanism for supporting weighted priority[J]. Computer Engineering and Design, 2019, 40(6): 1535-1539 |
| |
| Authors: | CHEN Cai-xia LI Chun-yu HE Shu-qian DENG Zheng-jie YANG Lin SHI Chun |
| |
| Affiliation: | (School of Information Science and Technology,Hainan Normal University,Haikou 571158,China;Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of Ministry of Education,Xiamen University,Xiamen 361005,China;School of Information and Intelligence Engineering,University of Sanya,Sanya 572022,China) |
| |
| Abstract: | Focusing on the fairness of throughput weighted proportions in IEEE 802.11e WLANs, an adaptive and full-distributed access mechanism with delta estimation algorithm of traffic loads was proposed. A linear adjustment rule of contention window (CW) about traffic loads was deduced, parameters of access mechanism were connected with dynamic network conditions. A delta estimation algorithm of traffic loads was given. For better performance of aggregate throughput and supporting weighted priority levels (WPLs), a priority index and multiple thresholds were introduced in the adjustment rules of access parameters. The sizes of CW determined the access channel probability of nodes, which guaranteed the performance of weighted fairness. The simulation results confirm the validity and good scalability of the proposed access mechanism. |
| |
| Keywords: | IEEE 802.11 medium access control weighted fairness idle slot intervals delta estimation |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
