Pedro Júlio, Filipe Ribeiro, J. Dias, J. Mamede, R. Campos
The increasing trend in wireless Internet access has been boosted by IEEE 802.11. However, the application scenarios are still limited by its short radio range. Stub Wireless Multi-hop Networks (WMNs) are a robust, flexible, and cost-effective solution to the problem. Yet, typically, they are formed by single radio mesh nodes and suffer from hidden node, unfairness, and scalability problems. We propose a simple multi-radio, multi-channel WMN solution, named Wi-Fi network Infrastructure eXtension - Dual-Radio (WiFIX-DR), to overcome these problems. WiFIX-DR reuses IEEE 802.11 built-in mechanisms and beacons to form a Stub WMN as a set of self-configurable interconnected Basic Service Sets (BSSs). Experimental results show the improved scalability enabled by the proposed solution when compared to single-radio WMNs.
{"title":"Stub Wireless Multi-hop Networks using self-configurable Wi-Fi Basic Service Set Cascading","authors":"Pedro Júlio, Filipe Ribeiro, J. Dias, J. Mamede, R. Campos","doi":"10.1109/WD.2017.7918147","DOIUrl":"https://doi.org/10.1109/WD.2017.7918147","url":null,"abstract":"The increasing trend in wireless Internet access has been boosted by IEEE 802.11. However, the application scenarios are still limited by its short radio range. Stub Wireless Multi-hop Networks (WMNs) are a robust, flexible, and cost-effective solution to the problem. Yet, typically, they are formed by single radio mesh nodes and suffer from hidden node, unfairness, and scalability problems. We propose a simple multi-radio, multi-channel WMN solution, named Wi-Fi network Infrastructure eXtension - Dual-Radio (WiFIX-DR), to overcome these problems. WiFIX-DR reuses IEEE 802.11 built-in mechanisms and beacons to form a Stub WMN as a set of self-configurable interconnected Basic Service Sets (BSSs). Experimental results show the improved scalability enabled by the proposed solution when compared to single-radio WMNs.","PeriodicalId":179998,"journal":{"name":"2017 Wireless Days","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126752895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marcus Haferkamp, Benjamin Sliwa, Christoph Ide, C. Wietfeld
High transfer speeds, low latencies and a widespread availability qualify Long Term Evolution (LTE) for various applications and services in the field of Human-to-Human (H2H) as well as fast growing Vehicle-To-X (V2X) and Cyber Physical Systems (CPS) communications. As a result, a steady growth of mobile data traffic causing an increasing interaction of different traffic classes can be observed. In order to ensure timely transmissions of time-critical data in the future, we propose the novel Payload-Size and Deadline-Aware (PayDA) scheduling approach and compare its performance regarding the compliance with deadlines with those of other common packet scheduling mechanisms. The performance analysis is done with the complex and open-source LTE simulation environment LTE-Sim. The results show that the average latency can be reduced by the factor of 20 and the mean goodput can be enhanced by a factor of about 3.5 for a high miscellaneous data traffic. In case of a heavy homogeneous and time-critical data traffic the mean Deadline-Miss-Ratio (DMR) can be decreased by about 35%.
高传输速度、低延迟和广泛的可用性使长期演进(LTE)技术适用于人与人(H2H)以及快速增长的车对x (V2X)和网络物理系统(CPS)通信领域的各种应用和服务。因此，可以观察到移动数据流量的稳定增长导致不同流量类别的交互增加。为了保证未来时间关键型数据的及时传输，我们提出了新的PayDA (Payload-Size and Deadline-Aware)调度方法，并将其在遵守截止日期方面的性能与其他常见的分组调度机制进行了比较。性能分析是在复杂的开源LTE仿真环境LTE- sim中完成的。结果表明，对于高杂项数据流量，平均延迟可降低20倍，平均goodput可提高约3.5倍。在大量同质和时间关键型数据流量的情况下，平均截止日期缺失率(DMR)可以降低约35%。
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