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32nd IEEE Conference on Local Computer Networks (LCN 2007)最新文献

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Handoff Performance Enhancement for TCP-based Streaming Services in Heterogeneous Networks 异构网络中基于tcp的流服务切换性能增强
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.91
M. Yoshimoto, K. Kawano, K. Kinoshita, T. Matsuda, K. Murakami
{"title":"Handoff Performance Enhancement for TCP-based Streaming Services in Heterogeneous Networks","authors":"M. Yoshimoto, K. Kawano, K. Kinoshita, T. Matsuda, K. Murakami","doi":"10.1109/LCN.2007.91","DOIUrl":"https://doi.org/10.1109/LCN.2007.91","url":null,"abstract":"The development and enhancement of wireless communication systems such as cellular network and wireless LAN initiate the interests of heterogeneous networks where mobile users can make use of desirable wireless communication system. Furthermore, streaming services in a mobile environment have much attention with the wider bandwidth of wireless networks. Especially, TCP-based streaming service have more attention rather than UDP-based ones, since then can be used via some wide-accepted TCP-based protocols such as HTTP. However, in heterogeneous networks, the throughput of TCP-based communication is drastically degraded by decreasing of TCP congestion window size because of communication interrupt at vertical handoff. Therefore, QoS requirement of applications is not kept until the congestion window size increases enough again. In this paper, we proposed the method to immediately recover the TCP congestion window size by applying IEEE 802.11e EDCA. It can be implemented without extension of the existing TCP. Finally, we show the effectiveness of the proposed method by simulation experiments.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114164162","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
Adaptive out-of-band routing protocol auto-negotiation for mobile ad hoc networks 移动自组织网络的自适应带外路由协议自动协商
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.63
O. Battenfeld, P. Reinhardt, Bernd Freisleben
{"title":"Adaptive out-of-band routing protocol auto-negotiation for mobile ad hoc networks","authors":"O. Battenfeld, P. Reinhardt, Bernd Freisleben","doi":"10.1109/LCN.2007.63","DOIUrl":"https://doi.org/10.1109/LCN.2007.63","url":null,"abstract":"There is no universal approach for the routing problem in mobile ad hoc networks: Depending on mobility or data traffic patterns, resource constraints, environmental conditions or delivery requirements in terms of reliability, latencies or available bandwidth, protocol designs and optimizations focus on different aspects. Changes in the usage context have an effect on the suitability or efficiency of the utilized routing protocol, such that switching to another protocol intended to work in the altered environment might be desired. In this paper, we present a novel approach to automatically configure and adaptively switch between routing protocols at runtime by coordinating local preferences using a fault-tolerant distributed voting algorithm. It has been implemented as an extension to a routing software running on Linux and Unix-like systems.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121117577","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: 19
Design and Performance Evaluation of Multipath Extensions for the DYMO Protocol DYMO协议多路径扩展的设计与性能评估
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.104
J. J. Galvez, P. M. Ruiz
{"title":"Design and Performance Evaluation of Multipath Extensions for the DYMO Protocol","authors":"J. J. Galvez, P. M. Ruiz","doi":"10.1109/LCN.2007.104","DOIUrl":"https://doi.org/10.1109/LCN.2007.104","url":null,"abstract":"In this paper we propose a multipath extension to dynamic MANET on-demand (DYMO) routing protocol. Multipath protocols have been shown to benefit on-demand routing in MANETs, where the knowledge of alternate paths allows to reduce the frequency of route discovery in the presence of link failures. Route discovery is an operation which accounts for most of the overhead of these protocols. This is specially helpful in scenarios with node mobility where link failures are frequent. Our extension is based on AOMDV. It can discover multiple disjoint paths in one route discovery with minimal additional overhead over DYMO. We analyze the performance gains of using alternate path information with DYMO. Simulation results show that multipath routing greatly benefits DYMO in reducing overhead and therefore increasing performance.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"8 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114052145","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: 12
A Game-Theoretic Framework for Bandwidth Attacks and Statistical Defenses 带宽攻击与统计防御的博弈论框架
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.11
Mark E. Snyder, Ravi Sundaram, Mayur Thakur
{"title":"A Game-Theoretic Framework for Bandwidth Attacks and Statistical Defenses","authors":"Mark E. Snyder, Ravi Sundaram, Mayur Thakur","doi":"10.1109/LCN.2007.11","DOIUrl":"https://doi.org/10.1109/LCN.2007.11","url":null,"abstract":"We introduce a game-theoretic framework for reasoning about bandwidth attacks, a common form of distributed denial of service (DDoS) attacks. In particular, our traffic injection game models the attacker as a rational but limited-resource entity who uses limited knowledge of traffic patterns to launch IP spoofing based bandwidth attacks on a server. We model the defender as a coarse-grained, relative volume based statistical filter. We analyze the effectiveness of the defender against the attacker by analyzing the payoffs of various strategies in the traffic injection game. Furthermore, we analyze how these payoffs change in the presence of random noise. Our results show that there is potential for using statistical methods for creating defense mechanisms that can detect a DDoS attack and that even when an attacker has a priori knowledge of the expected traffic volume for the dimension and divisions employed in the attack, the attack traffic can still be exposed to the defender.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122396463","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: 11
Rate Splitting MIMO-based MAC Protocol 基于速率分裂mimo的MAC协议
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.89
Abduladhim Ashtaiwi, H. Hassanein
{"title":"Rate Splitting MIMO-based MAC Protocol","authors":"Abduladhim Ashtaiwi, H. Hassanein","doi":"10.1109/LCN.2007.89","DOIUrl":"https://doi.org/10.1109/LCN.2007.89","url":null,"abstract":"Multiple input multiple output (MIMO) offers significant advantages in terms of rate and reliability. We consider sharing the MIMO increased rate in wireless mesh networks (WMNs) links. Such sharing allows nodes in a WMN to concurrently meet more demanding communication requirements such as high data rates, increased transmission range, power savings and low dropping rates. In this paper, we propose the rate splitting MIMO-based Mac protocol (RSMP) which is a distributed Mac protocol where pairs of nodes can locally cooperate with other nodes in their vicinities to reserve the required rate through effective selection on transmit antennas. Nodes can then use any preferable MIMO coding technique that best suit their communication requirements. RSMP is evaluated using OPNET interfaced with Matlab. OPNET is used to model the details of the Mac protocol while Matlab is used to compute the MIMO channel capacity and interference. Simulation results are obtained and compared to those of 802.11n MIMO-based DCF MAC protocol. We show that our proposed RSMP scheme outperforms MIMO DCF MAC in medium access delay and throughput. We also show that nodes can always attain their requested rate and that RSMP can be applied to satisfy multiple QoS requirements.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133990703","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: 18
Developing Wireless Sensor Nodes for Real-World Applications 为实际应用开发无线传感器节点
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.111
R. Newman, J. Kemp
{"title":"Developing Wireless Sensor Nodes for Real-World Applications","authors":"R. Newman, J. Kemp","doi":"10.1109/LCN.2007.111","DOIUrl":"https://doi.org/10.1109/LCN.2007.111","url":null,"abstract":"This paper describes the development of a wireless sensor node platform, driven by the requirements of two real-world applications. Although there are several commercial, off the shelf platforms available, none was found to be suitable against the needs of the two applications. The platform that has been developed provides a number of advantages over existing systems, the primary one being rapidity of development of both software and the integration new transducer types. Although targeted at the two applications described, the platform makes available a 'multi modal mote' which mimics the multi-sensor card available with the popular MICA mote, but offers a better performance.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117301335","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: 2
Performance Evaluation of Traffic Mix in IP Based Networks 基于IP网络的流量组合性能评价
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.75
N. Sulaiman, R. Carrasco, E. G. Chester
{"title":"Performance Evaluation of Traffic Mix in IP Based Networks","authors":"N. Sulaiman, R. Carrasco, E. G. Chester","doi":"10.1109/LCN.2007.75","DOIUrl":"https://doi.org/10.1109/LCN.2007.75","url":null,"abstract":"With the convergence of mobile telephony and the Internet, it seems that future telephony data will be transferred on VoIP datagram. Mobility will affect the overall system performance especially for voice communication. Thus, maintaining the quality of voice is necessary. It is important to guarantee that the end-to-end delay must be kept at a certain level. This paper investigates the performance of voice in traffic mix environment. Handover which is based on incoming traffics may cause the system to be unbalanced. A load balancing scheme was deployed to optimise the system capacity and to improve performance. The throughput, end-to-end delay and packet loss are used in measuring the performance. The results show that a better performance can be achieved by deploying this scheme. In addition, the system is able to support more number of connected users.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124884405","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: 12
Reliability Control for Aggregation in Wireless Sensor Networks 无线传感器网络中聚合的可靠性控制
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.106
J. Benson, Tony O'Donovan, C. Sreenan, U. Roedig
{"title":"Reliability Control for Aggregation in Wireless Sensor Networks","authors":"J. Benson, Tony O'Donovan, C. Sreenan, U. Roedig","doi":"10.1109/LCN.2007.106","DOIUrl":"https://doi.org/10.1109/LCN.2007.106","url":null,"abstract":"Data aggregation is a method used in sensor networks to reduce the amount of messages transported. By aggregating, the data contained in several messages is fused into one single message. If such a message, containing the equivalent of many individual messages, is lost due to transmission errors then this has a detrimental effect on the application quality experienced. In many sensor network applications a constant supply of data is needed and therefore application quality is severely effected by excessive data loss. This paper proposes and evaluates the use of an in-network control mechanism to offset this disadvantageous effect. The control mechanism analytically calculates the correct reliability that an aggregate of given size must be forwarded at in order to meet application specific goals.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123301327","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: 13
Co-operative handover in 3G System Architecture Evolution 3G系统架构演进中的协同切换
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.160
G. Kuhn, J. Eisl, H. Becker
{"title":"Co-operative handover in 3G System Architecture Evolution","authors":"G. Kuhn, J. Eisl, H. Becker","doi":"10.1109/LCN.2007.160","DOIUrl":"https://doi.org/10.1109/LCN.2007.160","url":null,"abstract":"This paper outlines the challenges and possible solutions for mobility management between 3GPP and non-3GPP access systems. Given the differences between technologies and mobility principles in 3GPP and non-3GPP access networks it is feasible to implement the mobility features between 3GPP and non-3GPP networks in a stepwise approach. This allows on one hand an early market entry of a basic solution and on the other hand a later enhancement aiming at co-operative handover decisions and context aware mobility. The latter enables a mobile node to change point of network attachment in a secure and seamless fashion. In order to enable short term deployment of mobility over heterogeneous access networks, mobile IPv4 and mobile IPv6 should be introduced with some additional changes for the handover of non-real-time traffic and non-co-operative handover. In a further step, an enhanced mobility solution shall be introduced which supports a preparation phase including possible pre-authentication before the handover of the transmission path. In conjunction with this approach it is proposed to enable coordination on handover decision between the mobile node and the evolved packet core network.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126185575","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
Improvement on Network Capacity for Voice Services over HCCA 基于HCCA的话音业务网络容量改进
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.41
Wenpeng Yuan, Guangxi Zhu, Gan Liu, Di Wu
{"title":"Improvement on Network Capacity for Voice Services over HCCA","authors":"Wenpeng Yuan, Guangxi Zhu, Gan Liu, Di Wu","doi":"10.1109/LCN.2007.41","DOIUrl":"https://doi.org/10.1109/LCN.2007.41","url":null,"abstract":"In the 802.11e protocol, voices traffic takes a higher priority than other services. However, there are still some technical problems existing in VoIP services over WLAN: (a) low voice capacity caused by the inherent characteristic of WLAN and heavy packet headers from upper layers and (b) unacceptable voice delay in the presence of coexisting with other applications. To address these problems, in this paper we propose several schemes to better manage the limited network capacity of VoIP network. In the proposed schemes, every voice stream occupies a fixed bandwidth to avoid collision between packets. With the Packet Header Compression technology, the overhead of voice packets is greatly reduced. Under various PHY rates, we investigate the performance of our proposed scheme over various voice codecs. Compared to HCCA, the proposed scheme greatly advances the maximum throughput of voice streams.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129553149","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
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