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

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Measurement Based Call Quality Reporting 基于测量的呼叫质量报告
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.76
R. Serral-Gracià, L. Jakab, J. Domingo-Pascual
{"title":"Measurement Based Call Quality Reporting","authors":"R. Serral-Gracià, L. Jakab, J. Domingo-Pascual","doi":"10.1109/LCN.2007.76","DOIUrl":"https://doi.org/10.1109/LCN.2007.76","url":null,"abstract":"Real-time traffic is an important issue when designing networks. The growth in the deployment of voice applications in packet switched networks requires that the network can guarantee a minimum level of quality. At the same time, customers want guaranties that the proper quality of service is provided for their contracted services. In this environment service providers need means of reporting the quality level of their networks. Standardisation bodies define general metrics, such as delay, jitter or losses without giving detailed information regarding the actual user's perception of the traffic. Other approaches such as the mean opinion score (MOS), are too coarse to be significant on best-effort based environments such as the Internet. This work is motivated by the potential change in the quality of service (QoS) parameters found in packet switched networks. Which highlights the inaccuracy of metrics such as MOS, since they were designed for the stable circuit switched networks. This paper proposes a novel approach to on-line voice quality measurement which is more suitable for packet switched networks than the classical alternatives, while keeping the subjective approach of MOS. Moreover, our solution permits the real-time reporting of the voice communication's quality. Along with the specification of this metric, the paper provides an experimental validation of the proposal using a real testbed with real applications. The results show the higher accuracy in reporting using this proposal over the standard metrics currently used.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"4 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":"129154785","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
Prototyping Service Discovery and Usage in Wireless Sensor Networks 无线传感器网络中的原型服务发现与使用
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.58
R. Marin-Perianu, H. Scholten, P. Havinga
{"title":"Prototyping Service Discovery and Usage in Wireless Sensor Networks","authors":"R. Marin-Perianu, H. Scholten, P. Havinga","doi":"10.1109/LCN.2007.58","DOIUrl":"https://doi.org/10.1109/LCN.2007.58","url":null,"abstract":"Heterogeneous Wireless Sensor Networks (WSNs) are envisioned to provide different types of services in an open and dynamic environment. This paper presents the design, implementation and evaluation of a service discovery and usage solution for heterogeneous WSNs. The users have the possibility to discover and use the services available in the WSN, while sensor nodes can search for the existing gateways to the outside world in order to signal important events. The WSN self-organizes in a clustered structure that acts as a distributed directory of service registrations. The clustering offers the necessary support to achieve energy-efficient discovery within the WSN. We implement the combined solution on resource-constrained sensor nodes, and we analyse the performance characteristics. The results show that the clustering algorithm has low communication overhead and the service discovery protocol scales with the number of nodes and network density. In addition, we show that the solution is lightweight (both code and data memory footprint) and the the interaction user-WSN is straightforward and intuitive.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"32 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":"128772545","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: 23
An AAA Study for Service Provisioning in Vehicular Networks 车载网络服务供给的AAA研究
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.27
E. S. Coronado, S. Cherkaoui
{"title":"An AAA Study for Service Provisioning in Vehicular Networks","authors":"E. S. Coronado, S. Cherkaoui","doi":"10.1109/LCN.2007.27","DOIUrl":"https://doi.org/10.1109/LCN.2007.27","url":null,"abstract":"This paper investigates the key elements for a scalable solution of authentication, authorization, and accounting for service delivery in vehicular networks. Different approaches were studied to identify their advantages and disadvantages according to main evaluation parameters, two of which are scalability and latency. Upcoming research efforts need to address these elements to provide an appropriate service provisioning framework for the future deployment of vehicular networks.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"20 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":"117041512","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
Factoring IPv6 Device Mobility and Ad-hoc Interactions into the Service Location Protocol 将IPv6设备移动性和Ad-hoc交互纳入服务定位协议
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.108
B. Silverajan, J. Harju
{"title":"Factoring IPv6 Device Mobility and Ad-hoc Interactions into the Service Location Protocol","authors":"B. Silverajan, J. Harju","doi":"10.1109/LCN.2007.108","DOIUrl":"https://doi.org/10.1109/LCN.2007.108","url":null,"abstract":"The rise in device mobility, interactions for service discovery as well as IPv6 networking, necessitate a means by which a clear and consistent approach towards supporting rapid, dynamic service discovery and service provision must be undertaken. This paper describes ways to provide movement detection, automatic and dynamic discovery of network services as well as network characteristics at the point of attachment for mobile devices moving in IPv6 network spaces. It employs a service discovery mechanism based on using the service location protocol (SLP), one of the most extensively researched and standardised discovery protocols in existence today. We show why traditional means of service discovery have shortcomings when used in advanced mobile networking environments, and describe new extensions to overcome these issues without losing compatibility to existing work in SLP. Prototypes developed and tested from the work described provided empirical verification over several of our production and research IPv6 networks.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"148 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":"127222436","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
Improving Probabilistic Route Discovery in Mobile Ad Hoc Networks 改进移动Ad Hoc网络中的概率路由发现
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.114
J. Abdulai, M. Ould-Khaoua, L. Mackenzie
{"title":"Improving Probabilistic Route Discovery in Mobile Ad Hoc Networks","authors":"J. Abdulai, M. Ould-Khaoua, L. Mackenzie","doi":"10.1109/LCN.2007.114","DOIUrl":"https://doi.org/10.1109/LCN.2007.114","url":null,"abstract":"Conventional on-demand route discovery methods in mobile ad hoc networks (MANET) employ blind flooding, where a mobile node blindly rebroadcasts received Route Request (RREQ) packets until a route to a particular destination is established. This can potentially lead to high channel contention, causing redundant retransmissions and thus excessive packet collisions in the network. Such a phenomenon induces what is known as broadcast storm problem, which has been shown to greatly increase the network communication overhead and end-to-end delay. In this paper, we show that the deleterious impact of such a problem can be reduced if measures are taken during the dissemination of RREQ packets. We propose two new probabilistic methods for on-demand route discovery, that is simple to implement and can significantly reduce the overhead involved in the dissemination of RREQs. Our analysis reveals that equipping AODV with probabilistic route discovery can result in significant performance improvements on all the standard metrics.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"26 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":"125779854","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: 115
Tunable Group Key Agreement 可调组密钥协议
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.83
Rajesh Ingle, G. Sivakumar
{"title":"Tunable Group Key Agreement","authors":"Rajesh Ingle, G. Sivakumar","doi":"10.1109/LCN.2007.83","DOIUrl":"https://doi.org/10.1109/LCN.2007.83","url":null,"abstract":"Secure group communication has various applications. Requirements for an application differ in various parameters such as tolerance times for join and leave, arrival rate, departure rate, staying period and group life time. Existing group key agreement protocols do not harness knowledge of application requirements. In this paper we present scheme for tunable group key agreement. We introduce an application class awareness concept, rekeying algorithms and novel key tree structure. We simulated periodic refresh mode, periodic batch mode and controlled periodic refresh mode. Simulation experiment clearly shows that controlled periodic refresh mode outperforms periodic refresh mode and periodic batch mode.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"261 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":"124935492","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
Local Area Network Modeling for Performance Prediction 性能预测的局域网建模
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.16
P. Salvador, A. Nogueira, R. Valadas
{"title":"Local Area Network Modeling for Performance Prediction","authors":"P. Salvador, A. Nogueira, R. Valadas","doi":"10.1109/LCN.2007.16","DOIUrl":"https://doi.org/10.1109/LCN.2007.16","url":null,"abstract":"This paper proposes a new approach to the modeling of packet switching networks that is based only on measurements (or simulations) and does not require any information on the network structure. Network managers usually need to assess network behavior for varying number of users or evolving traffic profiles, even without a complete knowledge of the network topology or resources. In these cases, it is critical to have a framework that, based on existing measurements and/or mathematical models (that describe the evolution of the number of users and their traffic profiles), infer the future network quality of service (QoS) parameters. Using these predictions, the network manager can take substantiated decisions on the need for resources reallocation or upgrading.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"13 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":"121900155","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: 5
A Measurement-Based Modeling Approach for Network-Induced Packet Delay 基于测量的网络数据包延迟建模方法
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.136
Daniel A. Vivanco, A. Jayasumana
{"title":"A Measurement-Based Modeling Approach for Network-Induced Packet Delay","authors":"Daniel A. Vivanco, A. Jayasumana","doi":"10.1109/LCN.2007.136","DOIUrl":"https://doi.org/10.1109/LCN.2007.136","url":null,"abstract":"An approach is presented to capture and model Internet end-to-end packet delay behavior using ARMA and ARIMA models. Autocorrelation (ACF) and Partial Autocorrelation (PACF) functions are used to identify the most appropriate model and the model order. Impact due to sending rate and packet size of the probe, and the available link capacity on these two metrics are investigated. Results indicate that the models presented reflect accurately the effect of packet correlation induced by the network. Modeling Inter-Packet Gap (IPG) is an alternative for capturing the effect of the network on a packet stream. A methodology for fitting ARMA and ARIMA models to end-to-end packet delay and IPG series is presented.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"77 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":"121966943","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
A Novel MIMO-Aware Distributed Media Access Control Scheme for IEEE 802.11 Wireless Local Area Networks 一种新的IEEE 802.11无线局域网支持mimo的分布式媒体访问控制方案
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.14
D. Dechene, Khalim Amjad Meerja, A. Shami, S. Primak
{"title":"A Novel MIMO-Aware Distributed Media Access Control Scheme for IEEE 802.11 Wireless Local Area Networks","authors":"D. Dechene, Khalim Amjad Meerja, A. Shami, S. Primak","doi":"10.1109/LCN.2007.14","DOIUrl":"https://doi.org/10.1109/LCN.2007.14","url":null,"abstract":"This paper proposes a new distributed media access control (MAC) scheme to improve the network performance of Multiple-Input Multiple-Output (MIMO) wireless systems. In particular, this novel MAC scheme efficiently schedules two simultaneous transmissions between wireless stations (each equipped with three antennas) that are located in a single collision domain. Along with weighted nulling and intelligent packet fragmentation, this MAC scheme is capable of providing more efficient utilization of channel resources. The proposed MIMO-aware MAC scheme is compatible with the IEEE 802.11 standard. Detailed simulations are carried out to study the performance of the proposed scheme. The performance of the MIMO-aware MAC scheme is also compared with a recently proposed MIMO MAC scheme in the literature which is compatible with the IEEE 802.11 standard. Comparisons reveal that the proposed MIMO-aware MAC scheme achieves better throughput and delay performance under both saturated and unsaturated conditions.","PeriodicalId":333233,"journal":{"name":"32nd IEEE Conference on Local Computer Networks (LCN 2007)","volume":"60 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":"126346899","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: 23
Voice quality measurement in a typical router-based network 典型的基于路由器的网络中的语音质量测量
32nd IEEE Conference on Local Computer Networks (LCN 2007) Pub Date : 2007-10-15 DOI: 10.1109/LCN.2007.143
A. Azarfar, A. Jahangir
{"title":"Voice quality measurement in a typical router-based network","authors":"A. Azarfar, A. Jahangir","doi":"10.1109/LCN.2007.143","DOIUrl":"https://doi.org/10.1109/LCN.2007.143","url":null,"abstract":"In this paper, we introduce novel mechanisms for measuring and evaluating the performance of a network and its devices, configured especially for voice over IP (VoIP). We study the effects of different configurations on final voice quality by enabling or changing the related equipment features. In our study we quantify quality changes based on different router configurations and discuss precisely to what extent and how much this quality is improved versus features or special configurations of network devices. These results can be used for two purposes: compare and benchmark different routers in order to know which one is proper for a typical VoIP network, and select the best configurations. We demonstrate that the highest final quality of voice is achieved in packet remarking configurations with IP precedence and DSCP.","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":"120979345","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: 0
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