2007 15th IEEE Workshop on Local & Metropolitan Area Networks最新文献_第3页

An Efficient Call Admission Control for IEEE 802.16 Networks IEEE 802.16网络中有效的呼叫接纳控制

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295997

Sarat Chandra, A. Sahoo

引用次数: 67

Uplink Capacity Enhancement In Two-Hop Cellular Networks With Limited Mobile Relays 具有有限移动中继的二跳蜂窝网络的上行链路容量增强

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295988

Jingyuan Sun

{"title":"Uplink Capacity Enhancement In Two-Hop Cellular Networks With Limited Mobile Relays","authors":"Jingyuan Sun","doi":"10.1109/LANMAN.2007.4295988","DOIUrl":"https://doi.org/10.1109/LANMAN.2007.4295988","url":null,"abstract":"This paper studies system uplink capacity in multi-hop cellular networks with mobile nodes as relays. And according to simulation and analysis results, author provides an enhanced architecture in CDMA Two-Hop Cellular Networks (THCN) with relay capability limitation. We analyze the real relay capability request in the general layered multi-hop cellular networks, which provide relay capability is an indispensable factor when set up a multi-hop cellular system. Simulations show that mobile and fixed relay capability limitation will decide the enhancement of system uplink capacity. We provide the maximum system uplink capacity in a CDMA THCN cell. And then compare the different scenarios with lack of relay capability in uplink, we get single-hop mobile user percentage should be 10-40% if there is no or less fixed relay nodes. Considering detects of the general architecture, we propose a new enhanced architecture, which is more effective with relay capability limitation. Simulation results show that it will enhance the system uplink capacity by about 21.4%, while about 17% with relay limitation. Simulation also shows that when enlarging single-hop user area, the total system capacity will be kept and the sending power in uplink will be saved.","PeriodicalId":347028,"journal":{"name":"2007 15th IEEE Workshop on Local & Metropolitan Area Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128165987","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

On scalable measurement-driven modeling of traffic demand in large WLANs 大型无线局域网中流量需求的可扩展测量驱动建模

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295983

M. Karaliopoulos, M. Papadopouli, Elias Raftopoulos, Haipeng Shen

{"title":"On scalable measurement-driven modeling of traffic demand in large WLANs","authors":"M. Karaliopoulos, M. Papadopouli, Elias Raftopoulos, Haipeng Shen","doi":"10.1109/LANMAN.2007.4295983","DOIUrl":"https://doi.org/10.1109/LANMAN.2007.4295983","url":null,"abstract":"Models of traffic demand are fundamental inputs to the design and engineering of data networks. In this paper we address this requirement in the context of large-scale wireless infrastructures using real measurement data from the University of North Carolina (UNC) wireless campus network. Our modeling effort focuses on capturing the demand variation in both the spatial and temporal domain in a way that scales well with the size of the wireless network. The network traffic dynamics are studied over two different week-long monitoring periods at various levels of spatial aggregation, from individual buildings to the whole network. We model traffic workload in terms of wireless sessions and network flows and find several modeling elements that are reusable in both temporal and spatial dimensions. The same set of parametric distributions for the session-and flow-related traffic variables capture the network traffic demand in both monitoring periods. Even more interestingly, these same distributions can characterize traffic dynamics at finer spatial scales, such as a single building or a group of buildings. We use our models to generate synthetic traffic and compare with trace data. The comparison clearly illustrates the trade-off between model scalability and reusability, on the one hand, and accuracy in capturing local-scale traffic dynamics on the other. Our main contribution is a novel behavioral approach for traffic demand modeling in large wireless networks that features high flexibility in the exploitation of the spatial and temporal resolution available in data traces.","PeriodicalId":347028,"journal":{"name":"2007 15th IEEE Workshop on Local & Metropolitan Area Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129320234","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

Mesh Free Space Optical Systems: A Method to Improve Broadband Neighborhood Area Network Backhaul 无网格空间光学系统:一种改进宽带邻域网络回程的方法

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295972

D. Britz, Robert R. Miller

引用次数: 11

Power Control for Cognitive Radio Ad Hoc Networks 认知无线电自组织网络的功率控制

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295967

Lijun Qian, Xiangfang Li, J. Attia, Z. Gajic

引用次数: 108

A Hardware Platform for Utilizing TV Bands With a Wi-Fi Radio 利用Wi-Fi无线电的电视频段的硬件平台

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295974

Srihari Narlanka, Ranveer Chandra, P. Bahl, J. I. Ferrell

引用次数: 51

An Energy Efficient MAC in Wireless Sensor Networks to Provide Delay Guarantee 无线传感器网络中提供延迟保证的节能MAC

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295970

引用次数: 1

A Connection Oriented Internet Architecture for Restricting Reachability 一种限制可达性的面向连接的因特网结构

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295991

S. Kasera

引用次数: 0

Dynamics of End-to-End Bandwidth Allocations in QoS-adaptive Data Connections qos自适应数据连接中端到端带宽分配的动态

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295982

M. Rabby, K. Ravindran

{"title":"Dynamics of End-to-End Bandwidth Allocations in QoS-adaptive Data Connections","authors":"M. Rabby, K. Ravindran","doi":"10.1109/LANMAN.2007.4295982","DOIUrl":"https://doi.org/10.1109/LANMAN.2007.4295982","url":null,"abstract":"The paper discusses the dynamics of bandwidth allocations that occur in an end-to-end QoS-aware data transport system over a LAN-MAN. Here, the controlled object is a logical connection that carries the application-level data flows over the service provider's data transport infrastructure. The goal is to allocate just-enough bandwidth, in order to maximize the service-provider revenues. Accurate control of bandwidth allocations with a revenue-oriented goal is quite complex, due to the interactions among various data flows that dynamically share the network capacity in the system. So, we employ an on-line monitor-and-control scheme, aided by heuristics, that iteratively adjusts the bandwidth allocation based on the observed packet loss rate. The bandwidth allocation is increased when the observed packet loss rate exceeds a user-specified threshold, with the increase being proportional to the loss rate (i.e., multiplicative increase). The bandwidth is decreased additively when the loss rate falls below a safe limit. We describe this MIAD-based bandwidth allocation scheme, and study its dynamics. When the LAN-MAN environments provide bandwidth capacities in a stable manner, our MIAD scheme can achieve an optimal bandwidth allocation (in the sense of user-level QoS and service-provider revenues).","PeriodicalId":347028,"journal":{"name":"2007 15th IEEE Workshop on Local & Metropolitan Area Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116599322","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

Distributed Backlog-Driven Power Control in Wireless Networking 无线网络中的分布式待机驱动功率控制

2007 15th IEEE Workshop on Local & Metropolitan Area Networks Pub Date : 2007-06-10 DOI: 10.1109/LANMAN.2007.4295968

A. Dua, N. Bambos

{"title":"Distributed Backlog-Driven Power Control in Wireless Networking","authors":"A. Dua, N. Bambos","doi":"10.1109/LANMAN.2007.4295968","DOIUrl":"https://doi.org/10.1109/LANMAN.2007.4295968","url":null,"abstract":"We address the problem of distributed power control for supporting packetized traffic in wireless ad hoc networks (e.g. 802.11 based wireless LANs). The interference experienced by a link coexisting with other links in a shared wireless medium is responsive to the actions of the transmitter on the link. Consequently, the evolution of seemingly independent queues at autonomously acting transmitters is tightly entangled through the shared wireless channel. Thus, an exact analysis of the distributed power control problem which also incorporates queuing dynamics is intractable. To establish a performance benchmark, we first design the optimal centralized backlog aware power control algorithm (Oracle) in a dynamic programming (DP) framework. We then propose a heuristic backlog aware distributed power control algorithm (BDD). The implementation of BDD is based on randomized selection from lookup tables which are computed offline at each transmitter. The computational complexity and memory requirements for BDD are independent of the network size and topology, making it attractive from a practical perspective. Experimental results demonstrate that BDD closely matches Oracle in performance and enhances system throughput by 20-30% compared to benchmark backlog insensitive power control algorithms (e.g. Foschini-Miljanic).","PeriodicalId":347028,"journal":{"name":"2007 15th IEEE Workshop on Local & Metropolitan Area Networks","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128892635","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