2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR)最新文献

Performance of secure SIP and LoST signaling in a Next Generation 9–1–1 testbed 下一代9-1-1测试平台中安全SIP和LoST信令的性能研究

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267108

U. Desai, S. Alagesan, Anna Goulart, W. Magnussen

引用次数: 1

Joint encryption error correction and modulation (JEEM) scheme 联合加密纠错和调制(JEEM)方案

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267103

O. Adamo, E. Ayeh, M. Varanasi

引用次数: 5

Evaluation and improvement of end-to-end bandwidth measurement method for power-saving routers 节能路由器端到端带宽测量方法的评价与改进

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267095

D. Kobayashi, G. Hasegawa, M. Murata

{"title":"Evaluation and improvement of end-to-end bandwidth measurement method for power-saving routers","authors":"D. Kobayashi, G. Hasegawa, M. Murata","doi":"10.1109/CQR.2012.6267095","DOIUrl":"https://doi.org/10.1109/CQR.2012.6267095","url":null,"abstract":"The increase in energy consumption associated with ever-intensifying network traffic is becoming a major problem. A number of researchers have focused on technologies that dynamically adjust the processing performance and the link speed of routers according to the network traffic load in order to achieve energy-efficient networking. However, when such power-saving routers are present in an end-to-end network path, the accuracy of existing methods for measuring the end-to-end available bandwidth may degrade because of the variable bandwidth and delays at bottleneck links. Furthermore, the energy efficiency of power-saving routers also decreases under the additional traffic load caused by bandwidth probing. In this paper, we employ a network environment with a power-saving router to evaluate the performance of Pathload, which is a popular tool for measuring the end-to-end available bandwidth. By showing detailed simulation results, we demonstrate that both the measurement accuracy of Pathload and the energy efficiency of routers degrade, particularly when the power saving function of routers is triggered in shorter cycles. We also propose Pathload parameter settings that maintain measurement accuracy without affecting the behavior of power-saving routers.","PeriodicalId":394442,"journal":{"name":"2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130205940","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

Performance evaluation of the simplified WFQ to multiplex a huge number of queues 简化WFQ对大量队列进行多路复用的性能评估

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267099

S. Taniguchi, R. Kawate, K. Sato, E. Horiuchi, T. Yokotani

引用次数: 5

QoE assessment of olfactory media in remote ikebana with haptic media 有触觉介质的偏远插花嗅觉介质QoE评价

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267110

Pingguo Huang, Y. Ishibashi, N. Fukushima, S. Sugawara

引用次数: 10

Assignment strategy mechanism for heterogeneous types of mobile users and access points 异构类型移动用户和接入点的分配策略机制

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267107

T. Kimura, T. Murase, T. Okuda

{"title":"Assignment strategy mechanism for heterogeneous types of mobile users and access points","authors":"T. Kimura, T. Murase, T. Okuda","doi":"10.1109/CQR.2012.6267107","DOIUrl":"https://doi.org/10.1109/CQR.2012.6267107","url":null,"abstract":"This paper discusses a various customer heterogeneous server (VCHS) queuing system strategy for the optimal assignment of mobile users to wireless LAN access points (APs) to optimize user quality of service (QoS). The users and APs have heterogeneous types of service requests and services, such as types of service providers, respectively. It is assumed that users arrive in a stochastic manner and that the proportions of user traffic volumes to each service request are provided. The user only connects to an AP that matches the service with the user request. Then, the user leaves after downloading a specific volume of data. A “group” assignment strategy is proposed to match the service resources to the service request demands. The strategy includes how to make a group from a number of APs proportional to the volume of user traffic to each service request. The evaluations show that the “group” assignment strategy is significantly better than a “random” assignment strategy in terms of mean waiting time. The proposed strategy reduces the mean waiting time by 25%, with more significant decreases as the number of APs with more types of services increases.","PeriodicalId":394442,"journal":{"name":"2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133423062","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

On an efficient computational resource scheduling for prioritized multiple target contents searching in large-scale networks 大规模网络中优先多目标内容搜索的高效计算资源调度

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267112

C. Miura, S. Sugawara, Y. Ishibashi

引用次数: 1

Evaluation for cost-effective cache deployment in ISP networks ISP网络中高速缓存部署的经济效益评估

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267100

M. Shibuya, Y. Hei, T. Ogishi

{"title":"Evaluation for cost-effective cache deployment in ISP networks","authors":"M. Shibuya, Y. Hei, T. Ogishi","doi":"10.1109/CQR.2012.6267100","DOIUrl":"https://doi.org/10.1109/CQR.2012.6267100","url":null,"abstract":"Internet traffic for video content delivery has grown rapidly because consumer-generated media has been shared throughout the world and the number of contents has increased tremendously. In response to this, ISPs have faced to the issue that how to deliver the massive contents with low cost and without losing network quality. The issue is significant for the ISPs providing Internet access service at a flat fee. One of the solutions to the problem is to cache contents on the servers located in ISP networks. The cache technology itself was developed from ten-odd years ago and several research works were done according to the traffic model in those days. However, most of works focused on the traffic between network providers; i.e. the traffic of inter-domain links. Although ISPs has the issue to reduce intra-domain links as well as inter-domain links, previous works have not answered the question that where cache servers should be located in ISP networks. In this paper, we analyzed the traffic in ISP networks with various conditions on the deployment of cache servers. The simulation considered the network topology including core and access networks, the disk capacity of cache servers and users' access model for requesting contents considering the unbalanced distribution of the populations on geographic locations. As one of results, we found that the traffic of the heaviest used link when the cache servers were deployed on the core network in city area was reduced 38.89% by the ratio of cache server disk size was 1 comparing to the case that the ratio of the cache server disk size was 4.","PeriodicalId":394442,"journal":{"name":"2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125279435","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 study of hybrid DS/FFH spread-spectrum systems in the presence of frequency-selective fading and multiple-access interference 频率选择衰落和多址干扰下DS/FFH混合扩频系统性能研究

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267102

M. Olama, S. Smith, T. Kuruganti, Xiao Ma

{"title":"Performance study of hybrid DS/FFH spread-spectrum systems in the presence of frequency-selective fading and multiple-access interference","authors":"M. Olama, S. Smith, T. Kuruganti, Xiao Ma","doi":"10.1109/CQR.2012.6267102","DOIUrl":"https://doi.org/10.1109/CQR.2012.6267102","url":null,"abstract":"Hybrid spread-spectrum (HSS) systems have recently received considerable interest in commercial, Smart Grid, and military communication systems because they accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this modulation scheme is the specific code-related combination of standard direct-sequence spread spectrum (DSSS) with fast frequency-hopping (FFH) spread spectrum, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper we perform a simulation-based study of the DS/FFH performance as compared to the existing standard DSSS and FHSS wireless networks. The performance metrics are biterror probability and multiple-access capability. The parameter space of DS/FFH, including the DS spreading rate, frequency hopping rate, carrier frequencies, and numbers of users, is explored to show its performance under frequency-selective Rayleigh fading environments and multiuser interference. Direct digital synthesizers to achieve fast hopping speeds are also considered in our study.","PeriodicalId":394442,"journal":{"name":"2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129900816","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: 8

Traffic classification and observer design of cable networks 有线网络业务分类与观测器设计

2012 IEEE International Workshop Technical Committee on Communications Quality and Reliability (CQR) Pub Date : 2012-05-15 DOI: 10.1109/CQR.2012.6267105

Haihong Gao, T. Best, R. Pendse, M. E. Sawan

引用次数: 1