西安电子科技大学学报（自然科学版）2018，Vol.45Issue(2)：90-96,7.DOI:10.3969/j.issn.1001-2400.2018.02.016
802.11n/ac/ad中的两级聚合重传算法设计
Two-level frame aggregation retransmission scheme design in 802.11n/ac/ad
摘要
Abstract
The IEEE802.11n/ac/ad support multiple aggregation schemes, which can improve the efficiency of the MAC layer by aggregating MAC protocol data units and thus reducing the overhead of the MAC and PHY layer. However, in error-prone environments, the aggregation level of retransmitted aggregation frames severely fluctuates,incurring the instability of system throughput.In this paper,we propose a novel two-level retransmission aggregation scheme in erroneous environments.This scheme first introduces the aggregation sliding window in the MAC layer to increase the aggregation level; second, through theoretical analysis,the second level aggregation level and the first level A-MSDU frame length are optimized and adjusted dynamically according to the subframe size,the maximum aggregation level (MAL) allowed by the current two-level frame aggregation and the real-time channel bit-error-rate (BER). Simulation by using NS-3 shows that this scheme outperforms other schemes for different subframe sizes and aggregation levels.关键词
802.11n/ac/ad/两级聚合/误码率/网络仿真器/子帧长度/聚合包长Key words
802.11n/ac/ad/two-Level aggregation/BER/NS-3/subframe size/aggregation level分类
信息技术与安全科学引用本文复制引用
钱煦,吴斌,叶甜春..802.11n/ac/ad中的两级聚合重传算法设计[J].西安电子科技大学学报（自然科学版）,2018,45(2):90-96,7.基金项目
超高速无线局域网的国际标准化与技术验证研究资助项目(2012ZX03004004) （2012ZX03004004）
