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Spatial correlation and SER performance analysis of circular antenna array 圆形天线阵空间相关与SER性能分析
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.49
Jie Zhou, Wei Zhao, Chao Huang, Jiejun Wang
{"title":"Spatial correlation and SER performance analysis of circular antenna array","authors":"Jie Zhou, Wei Zhao, Chao Huang, Jiejun Wang","doi":"10.1109/CNSR.2006.49","DOIUrl":"https://doi.org/10.1109/CNSR.2006.49","url":null,"abstract":"Spatial fading correlation is one of the impairments practical multiple antenna array have to cope with. Therefore, in this paper, the effect of fading correlation on symbol error rate (SER) performance of MPSK with maximal ratio combining (MRC) is investigated for uniform circular antenna array (UCA). The performance evaluation uses the known expression for the SER of M-ary PSK in additive white Gaussian noise (AWGN) as the conditional probability, then averages it over the density function for the combined symbol signal to noise ratio (SNR). Results show that, for circular array, decrease in the radius is equivalent to decrease in SNR and increase in SER","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116179856","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
Trusted computing for protecting ad-hoc routing 用于保护自组织路由的可信计算
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/cnsr.2006.56
Michael Jarrett, Paul A. S. Ward
{"title":"Trusted computing for protecting ad-hoc routing","authors":"Michael Jarrett, Paul A. S. Ward","doi":"10.1109/cnsr.2006.56","DOIUrl":"https://doi.org/10.1109/cnsr.2006.56","url":null,"abstract":"Ad-hoc networks rely on participation and cooperation of nodes within the network to transmit data to destinations. However, in networks where participating nodes are controlled by different owners, nodes may choose to act in their own interest to the detriment of the network. Current solutions either exact high overheads on the network and nodes, or only operate in specialized scenarios and prevent a small selection of attacks. Trusted computing provides additional security in open computing environments by allowing software to prove its identity and integrity to remote entities. We propose using trusted computing to prevent misconfigured or malicious nodes from participating in the network. We extend AODV to ensure that only trustworthy nodes participate in the network. The protocol exacts less overhead on the network than many other approaches and can be applied in a wide variety of scenarios","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133772750","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: 21
A new boundary location register signalling protocol for inter-system roaming 一种新的系统间漫游边界位置寄存器信令协议
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.8
C. Kumar, H. K. Pande, R. Tripathi
{"title":"A new boundary location register signalling protocol for inter-system roaming","authors":"C. Kumar, H. K. Pande, R. Tripathi","doi":"10.1109/CNSR.2006.8","DOIUrl":"https://doi.org/10.1109/CNSR.2006.8","url":null,"abstract":"In mobile networks, when the mobile terminal (MT) has an active call while crossing the boundary of two systems, it is required that the existing connection shouldn't be lost. To meet this demand, the signaling protocol of mobility management must be designed for supporting location registration and call delivery for roaming users who move beyond their home network. The objective of this paper is to provide a modified boundary location register (MBLR) signaling protocol for inter-system roaming. The location registration and call delivery process of the new protocol are proposed which tries to reduce the signaling cost and latency. An analytical model is developed for comparative performance analysis of the BLR and MBLR protocol. However, it is realize that this will result in increased processing requirements at the database server. Thus, tradeoff between signaling, database access costs & processing overheads must be recognized","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130397336","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
Bandwidth provisioning and capacity planning tools 带宽分配和容量规划工具
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.19
J. Almhana, Zikuan Liu, R. McGorman, Benoit Lanteigne
{"title":"Bandwidth provisioning and capacity planning tools","authors":"J. Almhana, Zikuan Liu, R. McGorman, Benoit Lanteigne","doi":"10.1109/CNSR.2006.19","DOIUrl":"https://doi.org/10.1109/CNSR.2006.19","url":null,"abstract":"Bandwidth provisioning is an important issue for Internet service providers (ISPs) and ensuring quality of service (QoS) is a major concern. QoS is closely related to the available bandwidth which itself is subject to financial constraints. Unfortunately, up to now there have been no adequate tools available in the market so that ISPs can do accurate bandwidth provisioning. In this paper, we describe the software tools developed by GRETI for that purpose. These tools provide several calculators for voice over IP and data traffic","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132753503","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
Design of a hybrid multi-slot optical code division/wavelength division multiple access system 混合多槽光码分多址/波分多址系统的设计
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.25
Po-Hao Chang, Hung-Shiang Chen, Jun-Ren Chen
{"title":"Design of a hybrid multi-slot optical code division/wavelength division multiple access system","authors":"Po-Hao Chang, Hung-Shiang Chen, Jun-Ren Chen","doi":"10.1109/CNSR.2006.25","DOIUrl":"https://doi.org/10.1109/CNSR.2006.25","url":null,"abstract":"For optical communication networks, the wavelength division multiple access (WDMA) system has been developed at first and maturely commercialized. Although WDMA can be used to satisfy the requirement mentioned above, it has the disadvantage of low efficiency in utilizing bandwidth (for the high bandwidth optical communication system). Thus, the optical code division multiple access (OCDMA) is developed in order to alleviate the problem, but its data rate is limited by the low repetition rate of the ultrashort pulse laser source. Hence, in this paper, we propose a Multi-slot OCDMA system to resolve the issue of low data rate. Data rate and total throughput can really be increased with the increased number of slots with the proposed system. For example, if 512 chips are used for OCDMA system, the system can simultaneously accommodate more than 10 6-slot OCDMA and 30 WDMA users, achieving a total throughput of around 660 Gbps at a BER of 10-9","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133800490","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
Loan-Grant based Round Robin scheduling 基于贷款授予的轮循调度
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.34
A. Rahbar, O. Yang
{"title":"Loan-Grant based Round Robin scheduling","authors":"A. Rahbar, O. Yang","doi":"10.1109/CNSR.2006.34","DOIUrl":"https://doi.org/10.1109/CNSR.2006.34","url":null,"abstract":"We propose the Loan-Grant based Round Robin (LGRR) scheduler in the DiffServ domain. Traffic from all streams in all classes is carried in a logical frame. Each frame includes smaller rounds for each class, and only one packet can be transmitted from each stream inside a class in each round. A stream can transmit traffic in the frame when it has enough grants. Each stream inside a class first obtains some quantum from the scheduler according to its average arrival rate, bandwidth usage, and traffic status. Bursty streams can be processed quickly by requesting bandwidth loan from the scheduler. To control the amount of transmitted bits from each stream, the loan is paid back from the future acquired quantum. Our evaluation and comparison shows that our algorithm performs better than DRR in handling traffic under both normal and bursty traffic","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131975060","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
SCTP multihoming support for handoffs across heterogeneous networks 跨异构网络切换的SCTP多宿主支持
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.47
Farhan Siddiqui, S. Zeadally
{"title":"SCTP multihoming support for handoffs across heterogeneous networks","authors":"Farhan Siddiqui, S. Zeadally","doi":"10.1109/CNSR.2006.47","DOIUrl":"https://doi.org/10.1109/CNSR.2006.47","url":null,"abstract":"Next-generation mobile terminals are expected to provide users with seamless, uninterrupted network connectivity while moving across wide geographic locations. Achieving continuous network access is made possible by exploiting multihoming in mobile nodes and providing support for several heterogeneous network interfaces. Efficient mechanisms are required to enable mobile nodes to connect to various available networks to improve connectivity and provide network resilience. Stream control transmission protocol (SCTP) has been proposed as a potential candidate for facilitating multiple network support to achieve smooth session continuity while moving across different types of networks. This paper analyses the design and performance of proposed SCTP implementations for multihoming purposes. We present an empirical evaluation of SCTP while performing handoffs by conducting experiments in a real multi-network environment. We also identify the benefits and limitations of user and kernel-level implementations of SCTP","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128887449","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: 21
Range-Based Density Control forWireless Sensor Networks 基于距离的无线传感器网络密度控制
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.44
Yang-Min Cheng, Li-Hsing Yen
{"title":"Range-Based Density Control forWireless Sensor Networks","authors":"Yang-Min Cheng, Li-Hsing Yen","doi":"10.1109/CNSR.2006.44","DOIUrl":"https://doi.org/10.1109/CNSR.2006.44","url":null,"abstract":"Density control in a wireless sensor network refers to the process of deciding which node is eligible to sleep (enter power-saving mode) after random deployment to conserve energy while retaining network coverage. Most existing approaches toward this problem require sensor's location information, which may be impractical considering costly locating overheads. This paper proposes a new density control protocol that needs sensor-to-sensor distance but no location information. It attempts to approach an optimal sensor selection pattern that demands the least number of working (awake) sensors. Simulation results indicate that the proposed protocol is comparable to its location-based counterpart in terms of coverage quality and the reduction of working sensors","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127880777","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: 10
Periodic Data Traffic Modeling and Predicition-Based Bandwith Allocation 周期数据流量建模与基于预测的带宽分配
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.41
Zikuan Liu, J. Almhana, V. Choulakian, R. McGorman
{"title":"Periodic Data Traffic Modeling and Predicition-Based Bandwith Allocation","authors":"Zikuan Liu, J. Almhana, V. Choulakian, R. McGorman","doi":"10.1109/CNSR.2006.41","DOIUrl":"https://doi.org/10.1109/CNSR.2006.41","url":null,"abstract":"For the purpose of provisioning bandwidth for Internet access, we need to model the traffic at large time scales, over which the traffic shows evident periodicity, long correlation and a non-Gaussian marginal distribution. To capture these characteristics simultaneously, in this paper we use a periodicity transform-to identify the most significant periods of the traffic and use an autoregressive time series to capture the autocorrelation and apply the G-and-H distribution to model the marginal distribution. A prediction-based bandwidth provisioning scheme is proposed and many experimental results on real Internet traces are also provided","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121489960","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: 4
Combining Petri nets and ns-2: a hybrid method for analysis and simulation 结合Petri网和ns-2:一种分析和模拟的混合方法
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.24
Qiang Ye, M. MacGregor
{"title":"Combining Petri nets and ns-2: a hybrid method for analysis and simulation","authors":"Qiang Ye, M. MacGregor","doi":"10.1109/CNSR.2006.24","DOIUrl":"https://doi.org/10.1109/CNSR.2006.24","url":null,"abstract":"Network protocol performance and evaluation study is often carried out using a couple of widely used simulation toolkits, such as ns-2 and OPNET. These toolkits usually contain many built-in protocol models. Using these toolkits is very efficient due to the abundant models. However, the correctness of a protocol that interests us can never be proved by simulation itself. Petri net modeling enables us to verify the protocol of interest formally. But because of the generality of Petri nets, not many network protocol models are bundled with Petri net modeling tools. In this paper we present an innovative network simulation methodology that benefits from the interaction between ns-2 and Petri nets. A communication mechanism based on Socket Programming and a synchronization mechanism used to coordinate ns-2 and Petri nets were designed to make possible the interaction. In this paper, a new version of SACK TCP, alpha-min Paced SACK TCP, is used to illustrate the power of the proposed methodology","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"122 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131289192","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
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