2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975)最新文献_第5页

Link layer measurements in sensor networks 传感器网络中的链路层测量

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392161

N. Reijers, G. Halkes, K. Langendoen

引用次数: 143

A self-organizing, location-aware media access control protocol for DS-CDMA sensor networks 一种用于DS-CDMA传感器网络的自组织、位置感知媒体访问控制协议

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392197

B. Liu, N. Bulusu, H. Pham, S. Jha

引用次数: 7

TCP-friendly medium access control for ad-hoc wireless networks: alleviating self-contention 面向自组织无线网络的tcp友好介质访问控制:减轻自争

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392160

Dan Berger, Zhenqiang Ye, P. Sinha, S. Krishnamurthy, M. Faloutsos, S. Tripathi

{"title":"TCP-friendly medium access control for ad-hoc wireless networks: alleviating self-contention","authors":"Dan Berger, Zhenqiang Ye, P. Sinha, S. Krishnamurthy, M. Faloutsos, S. Tripathi","doi":"10.1109/MAHSS.2004.1392160","DOIUrl":"https://doi.org/10.1109/MAHSS.2004.1392160","url":null,"abstract":"We focus on self-contention: contention between packets of the same transport layer connection along the path from source to destination. We observe that self-contention plays an important role in degrading TCP performance in multi-hop wireless networks and that the use of the popular IEEE 802.11 MAC protocol exacerbates self-contention. We propose and study two MAC-layer approaches to alleviate self-contention. The first approach, called quick-exchange (QE), is designed with the intent of reducing the effects of inter-flow self-contention (e.g. between packets of the same connection traveling in opposite directions). The design of our second mechanism, called fast-forward (FF), is geared towards decreasing intra-flow self-contention (e.g. between packets of the same connection traveling in the same direction). We simulate and study our proposed schemes and observe that quick-exchange consistently improves net-work aggregate goodput (by as much as 20% in string topologies, 15% in random static scenarios, and 10% in random mobile scenarios). In contrast to our expectations, fast-forward causes sporadic and often negative effects on goodput for TCP connections. Upon investigation we find that while the MAC is, in some respect, operating more efficiently, as demonstrated by improved UDP throughput; interactions with TCPs congestion control mechanism cause the goodput to degrade. We analyze various effects that cause the respective behaviors with QE and FF in detail.","PeriodicalId":150940,"journal":{"name":"2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115293867","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}

引用次数: 44

A study of the coverage of large-scale sensor networks 大型传感器网络的覆盖研究

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392188

Benyuan Liu, D. Towsley

引用次数: 440

GCRP: geographic virtual circuit routing protocol for ad hoc networks 用于自组织网络的地理虚拟电路路由协议

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392181

Sophia Fotopoulou-Prigipa, A. B. McDonald

引用次数: 18

IEEE 802.11 fragmentation-aware energy-efficient ad-hoc routing protocols IEEE 802.11分片感知节能ad-hoc路由协议

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392081

T. Nadeem, A. Agrawala

引用次数: 25

Time indexing in sensor networks 传感器网络中的时间分度

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392166

Rong L. Zheng, Guanghui He, Indranil Gupta, L. Sha

{"title":"Time indexing in sensor networks","authors":"Rong L. Zheng, Guanghui He, Indranil Gupta, L. Sha","doi":"10.1109/MAHSS.2004.1392166","DOIUrl":"https://doi.org/10.1109/MAHSS.2004.1392166","url":null,"abstract":"We define the time indexing problem as the in-network storage and querying of sensor network data based solely on the time attribute. We argue qualitatively why existing storage schemes may be insufficient as solutions. We then present, analyze, and evaluate novel and lightweight solutions to both the storage and the querying sub-problems for time indexing. First, the time-indexed storage problem is formally defined, and two formulations are presented, seeking to optimize generic utility functions that are derived from concerns about energy, bandwidth usage, and storage balancing. We present and analyze decentralized protocols to solve these formulations, and prove the optimality of some of our solutions. Secondly, maintenance and use of simple overlays among rendezvous point nodes, in order to enable fault-tolerant and efficient time-indexed queries, are discussed. Finally, simulation results are presented to quantify performance characteristics of the protocols, and we find that our proposed scheme has low query overhead that scales with system size and density while exhibiting very good load balancing and fault tolerance properties.","PeriodicalId":150940,"journal":{"name":"2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130114887","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}

引用次数: 7

Enhancing broadcast operations in ad hoc networks with two-hop connected dominating sets 利用两跳连接支配集增强自组织网络中的广播操作

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392202

M. Spohn, J. Garcia-Luna-Aceves

引用次数: 17

Selective backbone construction for topology control in ad hoc networks 面向自组网拓扑控制的选择性骨干结构

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392069

Haitao Liu, Rajiv Gupta

{"title":"Selective backbone construction for topology control in ad hoc networks","authors":"Haitao Liu, Rajiv Gupta","doi":"10.1109/MAHSS.2004.1392069","DOIUrl":"https://doi.org/10.1109/MAHSS.2004.1392069","url":null,"abstract":"A key step in controlling topology in ad hoc networks is the construction of the backbone which is then used to transfer data. Nodes that are not part of the backbone can then go to sleep to save energy and increase the lifetime of the network. Centralized backbone construction algorithms give better performance but incur high communication overhead, while localized algorithms lack sufficient topology information needed to construct efficient backbones. We present selective backbone construction (SBC) which starts by selecting a small number of seed nodes in the backbone and then completes its construction by making a sweep of the network spreading outwards from the seed nodes. During the latter process, topology information is transferred to allow better coordinator selection decisions. We compared SBC with other power-saving protocols in a variety of tests featuring different mobility levels, traffic patterns, and node densities. Our experiments show that SBC is more efficient in saving energy and extending network life while providing satisfactory network performance when compared with 802.11, 802.11 PSM, and GAF.","PeriodicalId":150940,"journal":{"name":"2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123566041","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}

引用次数: 29

An adaptive and fault-tolerant gateway assignment in sensor networks 传感器网络中的自适应容错网关分配

2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975) Pub Date : 2004-10-25 DOI: 10.1109/MAHSS.2004.1392213

W. Su, Sung-Ju Lee

{"title":"An adaptive and fault-tolerant gateway assignment in sensor networks","authors":"W. Su, Sung-Ju Lee","doi":"10.1109/MAHSS.2004.1392213","DOIUrl":"https://doi.org/10.1109/MAHSS.2004.1392213","url":null,"abstract":"Gateway nodes are important elements in a sensor network since they provide the ability to establish long-range reach-back communication in order to retrieve critical data to remote locations. The gateways are however prone to failures just like any sensor nodes, and they consume significantly more energy since they transmit over longer distances compared with sensor-to-sensor links. We introduce an adaptive and fault-tolerant method for gateway assignment in sensor networks. Our approach is fully distributed and achieves the following objectives: (i) it allows surviving gateways to recover for other failed gateways; (ii) it distributes energy usage and traffic load between several gateway nodes within the sensor network. Each gateway adaptively controls its region of influence based on local conditions such as remaining energy level and traffic load. Our methodology was evaluated via simulation using a network model containing 400 sensor nodes with virtual targets. The simulation results indicate that our scheme is robust to gateway failures. Moreover, our scheme successfully balances the energy consumption and traffic load among the gateways.","PeriodicalId":150940,"journal":{"name":"2004 IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE Cat. No.04EX975)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122381786","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}

引用次数: 6