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2007 Second International Conference on Access Networks & Workshops最新文献

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Dynamic spectrum access in the IEEE 802.22 wireless regional area network IEEE 802.22无线区域网络中的动态频谱接入
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447115
D. Wright
{"title":"Dynamic spectrum access in the IEEE 802.22 wireless regional area network","authors":"D. Wright","doi":"10.1109/ACCESSNETS.2007.4447115","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447115","url":null,"abstract":"In view of the overcrowding of the wireless spectrum, government regulators have specified \"dynamic spectrum access\" in which unlicensed users can share spectrum licensed to incumbents, so long as they do not interfere with the licensee's transmissions. This paper describes the issues involved in standardizing the 802.22 wireless regional area network to share TV broadcast spectrum, including coexistence among TV broadcasts, Part 74 wireless microphones, and 802.22 base stations with overlapping coverage.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122556542","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
Solving the generalized base station placement problem in the planning of Broadband Power Line Communications access networks 解决宽带电力线通信接入网规划中的广义基站布局问题
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447106
A. Haidine, R. Lehnert
{"title":"Solving the generalized base station placement problem in the planning of Broadband Power Line Communications access networks","authors":"A. Haidine, R. Lehnert","doi":"10.1109/ACCESSNETS.2007.4447106","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447106","url":null,"abstract":"Broadband Power Line Communications (B-PLC) technology is an alternative for broadband access networks, allowing bit rates up to currently 200Mbps. This technique uses the wiring of the low-voltage grid in order to offer to the users the telecommunications services, such as Internet. In this paper, the B-PLC planning process is sub-divided into two parts, which are the Generalized Base Station Placement (GBSP) and the PLC Channel Allocation Problem (P-CAP). This paper focuses on GBSP that is formulated as multi-objective combinatorial optimization and solved by the means of metaheuristics. Two optimization approaches are used to solve it: the classical approach based on single-objective optimization and the modern approach based on multi-objective optimization. Their performances are evaluated and compared with each other.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115831180","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
Spectrum balancing for DSL with restrictions on maximum transmit PSD 限制最大传输PSD的DSL频谱平衡
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447105
D. Statovci, T. Nordström, R. Nilsson
{"title":"Spectrum balancing for DSL with restrictions on maximum transmit PSD","authors":"D. Statovci, T. Nordström, R. Nilsson","doi":"10.1109/ACCESSNETS.2007.4447105","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447105","url":null,"abstract":"The importance of a power spectral density (PSD) mask restriction is often overlooked when optimizing the spectrum usage for multiuser digital subscriber lines (DSL) systems. However, by developing the optimization strategies based only on the PSD constraints (masks) we can tremendously reduce the computation complexity compared to the methods only based on the total power restriction. In this paper we introduce a mask-based spectrum balancing (MSB) algorithm and demonstrate the near optimum performance of this optimization approach. Furthermore, we show that besides standards compliance, PSD restriction is also needed to ensure the convergence of iterative spectrum balancing methods, which use dual decomposition optimization.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130799540","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
DSL—from A to V and back again (invited paper) dsl -从A到V再返回(特邀论文)
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447104
S. Valcourt
{"title":"DSL—from A to V and back again (invited paper)","authors":"S. Valcourt","doi":"10.1109/ACCESSNETS.2007.4447104","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447104","url":null,"abstract":"Digital Subscriber Line (DSL) technology deployments have steadily increased in the last several years with current deployment counts topping over 200 million lines. While Asymmetric DSL (ADSL) technology continues to see the predominate share of access lines, Very high speed DSL (VDSL) has been in development for several years and has yet to overtake ADSL in the marketplace. While the increase in broadband communication demand has certainly fueled the growth of DSL, the deployment of the management protocol defined by the DSL Forum in Technical Report 69 (TR-69) offers the greatest potential for further increasing the speed by which deployments take place. With so much broadband communication technology available worldwide, are there other factors that should be considered to elongate DSL's hold on broadband into the future? We will attempt to consider the technology and the future of DSL by examining some of the historical advances that have led to DSL's existing success.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115172551","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
Using cross-layer information to improve TCP performance with vertical handoffs 使用跨层信息提高TCP垂直切换性能
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447135
L. Daniel, M. Kojo
{"title":"Using cross-layer information to improve TCP performance with vertical handoffs","authors":"L. Daniel, M. Kojo","doi":"10.1109/ACCESSNETS.2007.4447135","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447135","url":null,"abstract":"this paper we study the performance of TCP with a vertical handoff between access networks with widely varying link characteristics. TCP being an end-to-end protocol has performance problems as its behaviour depends on the end-to-end path characteristics which are likely to be affected by a vertical handoff. We propose a set of enhancements to the TCP sender algorithm that leverage on explicit cross-layer information regarding the change in the access link delay and bandwidth. We apply our enhanced algorithms and carry out a systematic study comparing the performance of the regular TCP to the performance of the enhanced TCP algorithms in various handoff scenarios between access networks having widely different bandwidth and delay characteristics. Our experiments show that with cross-layer notifications TCP performance can be improved significantly in most vertical handoff scenarios.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117034012","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: 9
On optimized Passive Optical Network (PON) deployment 无源光网络(PON)的优化部署
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447124
Branka Lakic, M. Hajduczenia
{"title":"On optimized Passive Optical Network (PON) deployment","authors":"Branka Lakic, M. Hajduczenia","doi":"10.1109/ACCESSNETS.2007.4447124","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447124","url":null,"abstract":"Service providers emphasize the need for faster, cheaper and more reliable deployment of broadband networks, therefore making the hardware manufacturers pursue innovative solutions driving down component complexity, installation time, required skill level and, ultimately, the overall deployment cost for an access network structure. The current dramatic increase in the fiber-to-the-home (FTTH) deployment pace along with the general desire to eventually migrate completely to these systems, puts the passive optical network (PON) deployment issues in the spotlight of current academic and system vendor research. Numerous publications explore new technology developments leading to the reduction in the overall costs required to deploy FTTH networks today, especially in terms of the PON structure, installation time, and required craftsman skill level.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114276694","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: 48
On triplexer design for next generation Ethernet Passive Optical Network (EPON) systems 下一代以太网无源光网络(EPON)系统的三工器设计
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447111
J. Santos, M. Hajduczenia
{"title":"On triplexer design for next generation Ethernet Passive Optical Network (EPON) systems","authors":"J. Santos, M. Hajduczenia","doi":"10.1109/ACCESSNETS.2007.4447111","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447111","url":null,"abstract":"The standardization effort targeting 10 Gbit/s EPON systems, together with the requirement for coexistence with the legacy IEEE 802.3ah compliant equipment, impose a set of very tight requirements in terms of wavelength allocation plan for future EPON systems and significant limitations in terms of triplexer design for optical network unit (ONU) modules, where 2 wavelength channels (or 3, when an analog video overlay is used on the downstream) must be properly separated with minimum power and quality loss, providing also a high quality transmission window for the upstream 1310 nm signal. In this paper, we look closer at the possible triplexer and filter design for emerging 10 Gbit/s EPON systems in the light of current IEEE 802.av Task Force activities and technical limitations of the wavelength division multiplexing (WDM) filter design process.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114322490","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
Routing for multi-antenna Wireless Mesh Network backhaul 多天线无线网状网络回程路由
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447128
E. Baccarelli, M. Biagi, C. Pelizzoni, N. Cordeschi
{"title":"Routing for multi-antenna Wireless Mesh Network backhaul","authors":"E. Baccarelli, M. Biagi, C. Pelizzoni, N. Cordeschi","doi":"10.1109/ACCESSNETS.2007.4447128","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447128","url":null,"abstract":"The goal of this contribution is to show which practical routing approach, for wireless mesh network (WMN) backhaul, is the best for systems presenting a constraint on the total power to be emitted be network nodes by modeling rounting as a power allocation problem. We consider at first multiple-input multiple-output (MIMO) point-to-point capacity-achieving codes, and nodes cooperation. Furthermore we take care of a WMN backhaul with a single source node, a single destination node, and N-l intermediate nodes placed equidis-tantly on a line between them. Additionally we consider also an interference cancellation able to enhance throughput and we compare the single-hop paradigm with multi-hop one.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129368812","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
On dynamic packet fragmentation for traffic integration over bandwidth-limited links 带宽受限链路上流量集成的动态分组碎片研究
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447108
Liang Guo, W. C. Lee, Ying-ieh Lin
{"title":"On dynamic packet fragmentation for traffic integration over bandwidth-limited links","authors":"Liang Guo, W. C. Lee, Ying-ieh Lin","doi":"10.1109/ACCESSNETS.2007.4447108","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447108","url":null,"abstract":"We consider a home networking system for integrating packetized isochronous and best-effort traffic over a shared link with limited bandwidth, wherein the isochronous traffic comprises multiple isochronous flows, each associated with a periodic packet arrival process having a constant isochronous packet transmission period. In such a system, best-effort packets of variable size can render it impossible to guarantee QoS of the isochronous traffic. We propose a dynamic packet fragmentation method to integrate isochronous and best-effort traffic, in particular, fragmentation with fixed size or variable size frames. We show that the method effectively increases link utilization and best-effort traffic throughput, without violating the delay and jitter requirements for isochronous traffic.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133572783","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
Capacity analysis and resource management of an integrated WiMAX & Wi-Fi access system for VoIP 一种用于VoIP的WiMAX & Wi-Fi集成接入系统的容量分析与资源管理
2007 Second International Conference on Access Networks & Workshops Pub Date : 2007-08-01 DOI: 10.1109/ACCESSNETS.2007.4447116
H. Pan, S. Yamano, Daisuke Kawasaki, H. Tani
{"title":"Capacity analysis and resource management of an integrated WiMAX & Wi-Fi access system for VoIP","authors":"H. Pan, S. Yamano, Daisuke Kawasaki, H. Tani","doi":"10.1109/ACCESSNETS.2007.4447116","DOIUrl":"https://doi.org/10.1109/ACCESSNETS.2007.4447116","url":null,"abstract":"In this paper, we give a quantitative evaluation on the effect of integrating WiMAX and Wi-Fi, as compared to the case of separate WiMAX and Wi-Fi systems, on the system capacity with QoS being considered. We focus particularly on the VoIP traffic aspects of the system. Based on this capacity evaluation, a cost analysis is further presented. We also propose and analyze a resource management scheme on Wi-Fi to WiMAX handover.","PeriodicalId":393914,"journal":{"name":"2007 Second International Conference on Access Networks & Workshops","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128538254","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
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