2008 Australasian Telecommunication Networks and Applications Conference最新文献_第2页

Automatic Placement of Actors within Wireless Sensor-Actor Networks 无线传感器- actor网络中actor的自动放置

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783327

S. Habib, Maytham Safar, Nosayba El-Sayed

{"title":"Automatic Placement of Actors within Wireless Sensor-Actor Networks","authors":"S. Habib, Maytham Safar, Nosayba El-Sayed","doi":"10.1109/ATNAC.2008.4783327","DOIUrl":"https://doi.org/10.1109/ATNAC.2008.4783327","url":null,"abstract":"This work explores the automatic placement of actors within wireless sensor-actor network through an evolutionary approach. A wireless sensor network (WSN) consists of two sets of nodes: sensors and actors, where the set of sensors performs all the sensing (data collection) from their surrounding environment. Since sensors operate by batteries, then they are limited with their processing and communication capabilities due to the short life-span of the batteries. On the other hand, the set of actors has more capabilities with extended life-span batteries, and their roles are to collect and process the raw data from the sensors to determine the next action for WSN. The actor placement problem is to select a minimal set of actors and their optimal locations in WSN keeping in mind the communication requirements between sensors and actors. We have encoded the actor placement problem into the evolutionary approach, where the objective function is to find the minimal total number of actors covering as many sensors as possible subject to budgetary and performance constraints. The experimental results demonstrate the feasibility of our evolutionary approach in covering 77% of 61 sensors by three actors within an area of 375 meters by 375 meters.","PeriodicalId":143803,"journal":{"name":"2008 Australasian Telecommunication Networks and Applications Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128765786","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

A Cross-layer Approach for Using Multiple Radio Channels with Directional Beams in a Suburban Ad Hoc Network 城郊自组网中使用带定向波束的多无线电信道的跨层方法

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783321

S. M. Rokonuzzaman, R. Pose, I. Gondal

引用次数: 4

Characterising the Interactions Between Unicast and Broadcast in IEEE 802.11 Ad Hoc Networks IEEE 802.11 Ad Hoc网络中单播和广播交互特性的研究

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783319

J.C.-P. Wang, D. Franklin, M. Abolhasan, F. Safaei

引用次数: 7

Adaptive Window Flow Control in MPLS Networks using Enhanced Kalman Filtering 基于增强卡尔曼滤波的MPLS网络自适应窗口流量控制

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783347

N. Wongvanich, H. Sirisena

引用次数: 1

Voice Activity Detection Using Entropy in Spectrum Domain 基于频谱域熵的语音活动检测

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783359

M. Asgari, A. Sayadian, M. Farhadloo, E. A. Mehrizi

引用次数: 12

How to Improve the Efficiency of IPv6 Handovers in IEEE 802.16 Networks 如何提高IEEE 802.16网络中IPv6切换的效率

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783337

Tomasz Mrugalski, J. Wozniak

{"title":"How to Improve the Efficiency of IPv6 Handovers in IEEE 802.16 Networks","authors":"Tomasz Mrugalski, J. Wozniak","doi":"10.1109/ATNAC.2008.4783337","DOIUrl":"https://doi.org/10.1109/ATNAC.2008.4783337","url":null,"abstract":"The first generation of fully conformant IEEE 802.16-based networks is being deployed throughout the world. Most of these networks do not support full mobility, due to radio access layer limitations. Newer solutions, based on IEEE 802.16-2005 standard, offer mobility support for subscriber stations. Unfortunately, after quickly changing the point of attachment on the WiMAX layer, very slow and inefficient IPv6 reconfiguration takes place. Delays introduced by DHCPv6 stateless automatic configuration and mobile IPv6 can easily diminish or even render useless all benefits gained using the efficient WiMAX - data link layer. IPv6 automatic configuration process was not designed with fast reconfiguration in mind. As handover speed is a crucial requirement in mobile cellular environments, reasons behind delays introduced by IPv6 layer mechanisms have to be analyzed and appropriate countermeasures applied. Proposals include novel use of DHCPv6 relays for remote configuration, solving DAD delays, limiting Binding Update procedure in Mobile IPv6, configuring routing through DHCPv6 communication and some other. This paper describes all stages of full IPv6 handover in IEEE 802.16 environment, focusing on major reasons of reconfiguration delays. A new metric for assessing impact of every stage on handover efficiency is defined. Several proposed improvements to the IPv6 handover process are evaluated and simulation results are presented. A discussion regarding possible generalization of best improvement proposals and further research areas concludes this paper.","PeriodicalId":143803,"journal":{"name":"2008 Australasian Telecommunication Networks and Applications Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123010625","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

Bandwidth Optimization for Mobile Thin Client Computing through Graphical Update Caching 通过图形更新缓存优化移动瘦客户端计算的带宽

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783355

B. Vankeirsbilck, P. Simoens, J. De Wachter, L. Deboosere, F. De Turck, B. Dhoedt, P. Demeester

引用次数: 15

Causal Multi Quantile Noise Spectrum Estimation for Speech Enhancement 语音增强的因果多分位数噪声谱估计

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783306

M. Farhadloo, A. Sayadian, M. Asgari, A. Mostafavi

引用次数: 1

Instant Handoffs for Wireless Infrastructure Meshed Networks 无线基础设施网状网络的即时切换

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783338

A. Kist

引用次数: 2

Optimizing Sensor Identification in Long-delay Networks to Account for Maximum Frame Size and Variations in Propagation Speed 考虑最大帧大小和传播速度变化的长延迟网络中传感器识别优化

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-12-01 DOI: 10.1109/ATNAC.2008.4783330

S.A. Howlader, M. Frater, M. Ryan

{"title":"Optimizing Sensor Identification in Long-delay Networks to Account for Maximum Frame Size and Variations in Propagation Speed","authors":"S.A. Howlader, M. Frater, M. Ryan","doi":"10.1109/ATNAC.2008.4783330","DOIUrl":"https://doi.org/10.1109/ATNAC.2008.4783330","url":null,"abstract":"Long-delay networks (LDNs) are networks in which the propagation wave speed is lower than that of radio waves, such as in underwater acoustic networks (UANs). The number of nodes is normally large in such a sensor network and the number may very due to different factors such as power failure or environmental disasters. An identification procedure is needed in this network to observe which nodes are currently operational and a large amount of time can be wasted in every probe of the procedure due to the long propagation delay. Optimizing the number of probes improves the identification time and power consumption by 75% and 60% respectively in both the slotted and un-slotted cases [1]. While optimizing the number of probes for the long delay, the frame size (the time within which the nodes send their packets) increases due to the lower offered load. In this work we show that even with the limitation of the maximum frame size our procedure works well. One of the limitations of LDNs is the variation of the propagating wave speed. We observe that if the standard deviation of the propagation speed is approximately less than 1/e of the packet size then the identification procedure for the slotted case is better than that for the un-slotted case. In order to alleviate the effect of variation in propagation speed we use a guard time in the slotted case.","PeriodicalId":143803,"journal":{"name":"2008 Australasian Telecommunication Networks and Applications Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120858911","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