2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop最新文献

CORP: Cooperative rateless code protocol for vehicular content dissemination 车载内容传播的合作无速率代码协议

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-18 DOI: 10.1109/MEDHOCNET.2009.5205197

Pasquale Cataldi, A. Tomatis, G. Grilli, M. Gerla

{"title":"CORP: Cooperative rateless code protocol for vehicular content dissemination","authors":"Pasquale Cataldi, A. Tomatis, G. Grilli, M. Gerla","doi":"10.1109/MEDHOCNET.2009.5205197","DOIUrl":"https://doi.org/10.1109/MEDHOCNET.2009.5205197","url":null,"abstract":"Data dissemination in vehicular networks has been a challenge due to unpredictable network dynamics and channel unreliability. In fact, conventional approaches that rely on TCP or UDP do not perform well and cannot consistently guarantee reliable communications. A potential solution to these problems involves using erasure-correcting codes to make UDP transmissions reliable. However, it is also important to note that, due to vehicular mobility and road obstacles, connections among nodes can be as short as a few seconds. Therefore, in a communication between two nodes, the delay between node discovery and data exchange must be minimized. In this paper we present CORP, a Cooperative Rateless Protocol that exploits the reliability of the rateless coding approach while performing fast and efficient dissemination through cooperating nodes within the network. The use of rateless codes and unicast connections places minimal constraints on the delay between node discovery and data transmission, thus simplifying and rendering feasible the content reliable download even in a highly dynamic scenario. Results from simulations reveal that performance improves as more and more nodes cooperate. In sum, CORP yields important improvements in terms of speed of dissemination when compared to traditional approaches such as TCP.","PeriodicalId":301316,"journal":{"name":"2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132001011","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: 22

A novel routing algorithm based on chord for hybrid wireless ad-hoc networks 一种基于chord的混合无线自组网路由算法

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-18 DOI: 10.1109/MEDHOCNET.2009.5205203

Jing Cao, Wei Wu

引用次数: 1

Scalable communication cost reduction: The Chord case 可伸缩的通信成本降低:Chord案例

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-18 DOI: 10.1109/MEDHOCNET.2009.5205198

K. Oikonomou, S. Sioutas, I. Stavrakakis

{"title":"Scalable communication cost reduction: The Chord case","authors":"K. Oikonomou, S. Sioutas, I. Stavrakakis","doi":"10.1109/MEDHOCNET.2009.5205198","DOIUrl":"https://doi.org/10.1109/MEDHOCNET.2009.5205198","url":null,"abstract":"In peer-to-peer (P2P) network system design a main focus is on efficient service discovery schemes, most frequently assuming permanent (or long-term stationary) positions for service facilities, neglecting communication costs due to the actual locations of the facilities. Since the problem of communication cost minimization is a large optimization problem (NP-hard) and requires global information (i.e., not scalable), in this paper the service migration philosophy is adopted which permits service facility movements and yields smaller communication cost in a scalable manner (i.e., based on local information). Service migration is incorporated in the Chord P2P system, imposing certain changes (e.g., the extension of the service discovery scheme of Chord) and introducing an extra system overhead (i.e., update messages) for the efficient operation of the (enhanced) system. As it is demonstrated here using simulation results, the communication cost corresponding to the extra system overhead is significantly small and more than enough compensated for by the communication cost reduction due to the introduction of service migration. As long as the network remains unchanged, the former communication cost is paid only once while the latter communication cost reduction is permanent.","PeriodicalId":301316,"journal":{"name":"2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126656913","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: 1

Extrapolation-based and QoS-aware real-time communication in wireless mobile ad hoc networks 无线移动自组网中基于外推和qos感知的实时通信

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-18 DOI: 10.1109/MEDHOCNET.2009.5205201

A. Agbaria, G. Gershinsky, Nir Naaman, K. Shagin

引用次数: 9

Content-based routing using subpart orthogonal codes 使用子部分正交码的基于内容的路由

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-18 DOI: 10.1109/MEDHOCNET.2009.5205202

Christine Jardak, J. Riihijarvi, P. Mahonen

引用次数: 1

Throughput-capacity and bit-per-joule performance of IEEE 802.11 based wireless mesh networks 基于IEEE 802.11的无线网状网络的吞吐量容量和每焦耳位性能

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-18 DOI: 10.1109/MEDHOCNET.2009.5205200

Rima Khalaf-Bitar, I. Rubin

{"title":"Throughput-capacity and bit-per-joule performance of IEEE 802.11 based wireless mesh networks","authors":"Rima Khalaf-Bitar, I. Rubin","doi":"10.1109/MEDHOCNET.2009.5205200","DOIUrl":"https://doi.org/10.1109/MEDHOCNET.2009.5205200","url":null,"abstract":"Energy consumption is of utmost importance in wireless mesh networks where nodes are battery operated and have limited power resources. In this paper, we develop an analytical model to estimate the throughput-capacity of a wireless mesh network and use this model to study the network's bit-per-joule performance. We assume that each node uses an IEEE 802.11 based software controlled radio whose modulation/coding scheme and rate can be dynamically selected. A topology synthesis algorithm is used to elect nodes to act as access points as well as backbone nodes (BNs). The latter form a mesh backbone network infrastructure. We present an algorithm that is used to analytically calculate an approximation of the throughput capacity performance of the network. We use this algorithm to examine the performance efficiency of the network, expressed in terms of the throughput rate per unit energy consumed under the joint setting of nodal transmit power and data rate levels. Our results show that when traffic is uniformly distributed across the area of operations, increasing the nodal transmit power levels, as well as the data rates, tend often to enhance the bit-per-joule performance of the system. We also examine the impact of the selection of the transmit data rate and power levels used in conducting the topology synthesis of the backbone network.","PeriodicalId":301316,"journal":{"name":"2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126097399","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: 3

Preventing Layer-3 wormhole attacks in ad-hoc networks with multipath DSR 利用多路径DSR防止ad-hoc网络中的三层虫洞攻击

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-18 DOI: 10.1109/MEDHOCNET.2009.5205196

Luis Fernando Garcia, J. Robert

引用次数: 10

Random access wireless networks with controlled mobility 随机存取无线网络与控制移动

2009 8th IFIP Annual Mediterranean Ad Hoc Networking Workshop Pub Date : 2009-08-01 DOI: 10.1109/MEDHOCNET.2009.5205194

G. Çelik, E. Modiano

引用次数: 9