WiMobCity '14Pub Date : 2014-08-01DOI: 10.1145/2633661.2633673
Peyman Pahlevani, Juan A. Cabrera, D. Lucani, F. Fitzek, M. Médard
{"title":"On the packet loss correlation in wireless mesh networks: channel models and practical schemes","authors":"Peyman Pahlevani, Juan A. Cabrera, D. Lucani, F. Fitzek, M. Médard","doi":"10.1145/2633661.2633673","DOIUrl":"https://doi.org/10.1145/2633661.2633673","url":null,"abstract":"State-of-the-art analysis and protocols in wireless mesh networks typically assume an independent packet loss channel for each receiver of a transmission. Although this is usually transparent for single-path protocol design, this assumption may severely degrade the performance of opportunistic and/or multi-path routing approaches as well as network coding (NC) subgraph selection problems (routing in NC). This paper proposes simple channel models to incorporate the effect of correlation between receivers in a parametric fashion and supports them with a measurement campaign that leverages various commercial devices and network conditions. Finally, we illustrate the effect of correlation in the design and performance of the PlayNCool network coding protocol introduced by the authors in prior work. Our results show that the modified PlayNCool protocol decreases the overhead by a factor of 2.5x.","PeriodicalId":213937,"journal":{"name":"WiMobCity '14","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127630160","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}
WiMobCity '14Pub Date : 2014-06-20DOI: 10.1145/2633661.2633663
T. Lin, H. Rivano, Frédéric Le Mouël
{"title":"Performance comparison of contention- and schedule-based mac protocols in urban parking sensor networks","authors":"T. Lin, H. Rivano, Frédéric Le Mouël","doi":"10.1145/2633661.2633663","DOIUrl":"https://doi.org/10.1145/2633661.2633663","url":null,"abstract":"Network traffic model is a critical problem for urban applications, mainly because of its diversity and node density. As wireless sensor network is highly concerned with the development of smart cities, careful consideration to traffic model helps choose appropriate protocols and adapt network parameters to reach best performances on energy-latency tradeoffs. In this paper, we compare the performance of two off-the-shelf medium access control protocols on two different kinds of traffic models, and then evaluate their application-end information delay and energy consumption while varying traffic parameters and network density. From the simulation results, we highlight some limits induced by network density and occurrence frequency of event-driven applications. When it comes to realtime urban services, a protocol selection shall be taken into account - even dynamically - with a special attention to energy-delay tradeoff. To this end, we provide several insights on parking sensor networks.","PeriodicalId":213937,"journal":{"name":"WiMobCity '14","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131530820","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}