{"title":"TCP support for sensor networks","authors":"Torsten Braun, T. Voigt, A. Dunkels","doi":"10.1109/WONS.2007.340494","DOIUrl":"https://doi.org/10.1109/WONS.2007.340494","url":null,"abstract":"Communication between sensors and controlling entities at the edge or outside the sensor network is needed for reliable remote sensor node management and reprogramming. TCP would be useful for tasks, where reliable unicast is appropriate, but the high bit error rates in wireless sensor networks lead to energy inefficiencies reducing the sensor network lifetime. We introduce an approach to support energy-efficient TCP operation in sensor networks. The concept called TCP support for sensor nodes (TSS) allows intermediate sensor nodes to cache TCP data segments and to perform local retransmissions in case of errors. TSS does not forward a cached segment until it knows that the previous segment has been successfully received by the next hop. This forms a backpressure mechanism for congestion control. Simulations show that TSS significantly reduces the number of TCP data segment and acknowledgement transmissions","PeriodicalId":151450,"journal":{"name":"2007 Fourth Annual Conference on Wireless on Demand Network Systems and Services","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134380980","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}
{"title":"Performance evaluation of a DUT-based approach to resource discovery in mobile ad hoc networks","authors":"Thomas Zahn, France Jochen Schiller","doi":"10.1109/WONS.2007.340479","DOIUrl":"https://doi.org/10.1109/WONS.2007.340479","url":null,"abstract":"Recently, approaches to DHT-style key-based routing explicitly designed for the use in mobile ad hoc networks (MANETs) have been proposed. However, as DHTs are usually no applications as such, a very practical distributed application running on top of such mobile DHTs could be resource discovery. Therefore, in this paper, a DHT-based approach to resource discovery -MAPNaS- will be described in detail and thoroughly evaluated through simulations. We aim at gaining a first insight into the question under which network conditions it is meaningful to perform DHT-based resource discovery and when it would be more advisable to opt for a less complex-e.g. a simple broadcast-based-approach instead","PeriodicalId":151450,"journal":{"name":"2007 Fourth Annual Conference on Wireless on Demand Network Systems and Services","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122326068","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}
{"title":"Peer-to-peer file transfer in wireless mesh networks","authors":"Sherif M. ElRakabawy, C. Lindemann","doi":"10.1109/WONS.2007.340491","DOIUrl":"https://doi.org/10.1109/WONS.2007.340491","url":null,"abstract":"In this paper, we consider the peer-to-peer transfer of popular files between devices in a wireless mesh network. We address the problem that occurs when multiple nodes try to access the same file simultaneously, resulting in increased contention on the shared wireless channel. To counteract this problem, we propose a cooperative file transfer protocol which splits a file into fixed-sized pieces and allows simultaneous downloads of such pieces from multiple peers. Opposed to previous approaches, the proposed protocol selects the potential download peers such that the corresponding download paths possess minimum interference among each other. In a performance study where we compare our approach with other download schemes proposed in the literature, we show that our cooperative protocol roughly halves the time required for downloading a file","PeriodicalId":151450,"journal":{"name":"2007 Fourth Annual Conference on Wireless on Demand Network Systems and Services","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130379123","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}