2008 Australasian Telecommunication Networks and Applications Conference最新文献_第8页

An Improved FEC Scheme for Mobile Wireless Communication at Vehicular Speeds 一种改进的车载移动无线通信FEC方案

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-09-01 DOI: 10.1109/ATNAC.2008.4783342

I. Ahmad, D. Habibi, Ziaur Rahman

{"title":"An Improved FEC Scheme for Mobile Wireless Communication at Vehicular Speeds","authors":"I. Ahmad, D. Habibi, Ziaur Rahman","doi":"10.1109/ATNAC.2008.4783342","DOIUrl":"https://doi.org/10.1109/ATNAC.2008.4783342","url":null,"abstract":"WiMAX has emerged as a promising wireless communication technology with potential to deliver high throughput and guaranteed quality of service to the end applications. Recent studies suggest that while WiMAX (802.16e) is capable of delivering a data rate of up to 75 Mbps for fixed wireless communications, data rate decreases drastically for mobile wireless communications, often providing a data rate less than 1 Mb/s when the mobile nodes travel at vehicular speeds. High bit error rate caused at high vehicular speeds is the key reason for low throughput. In noisy mobile communication environments, standard error control mechanisms like the transmission control protocol (TCP) has limited and often detrimental impacts on the overall throughput because of the excessive retransmission overheads. To address this issue, WiMAX standard incorporates forward error correction (FEC) mechanism that eliminates the need for retransmissions. In FEC, extra parity bits are added to the original message to recover the corrupted information. Adaptive FEC that adjusts the size of extra parity bits in response to packet retransmission requests is an enhancement over standard FEC that uses fixed block of party bits. Existing adaptive FEC schemes, however, have limited efficiency when the end terminal moves at vehicular speeds. In this paper, we propose a new FEC scheme that estimates and adjusts the size of extra parity bits to suit the channel conditions. We apply the concept of interval based data sampling to address the dynamic nature of communication environments at high vehicular speeds.","PeriodicalId":143803,"journal":{"name":"2008 Australasian Telecommunication Networks and Applications Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133964974","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: 7

Performance Evaluation and Improvement of Hybrid TCP Congestion Control Mechanisms in Wireless LAN Environment 无线局域网环境下混合TCP拥塞控制机制的性能评价与改进

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 2008-07-10 DOI: 10.1109/ATNAC.2008.4783352

Masafumi Hashimoto, G. Hasegawa, M. Murata

引用次数: 7

Ripple Effect: an Improved Geographic Routing with Local Connectivity Information 涟漪效应:一种具有本地连接信息的改进地理路由

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 1900-01-01 DOI: 10.1109/ATNAC.2008.4783332

Ming Li

引用次数: 3

Challenges and Recent Advances in QoS Provisioning, Signaling, Routing and MAC protocols for MANETs 面向manet的QoS配置、信令、路由和MAC协议的挑战和最新进展

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 1900-01-01 DOI: 10.1109/ATNAC.2008.4783303

S. Marwaha, J. Indulska, M. Portmann

引用次数: 34

Multi-core Security Defense System (MSDS) 多核安全防御系统(MSDS)

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 1900-01-01 DOI: 10.1109/ATNAC.2008.4783301

Ashley Chonka, Wanlei Zhou, Y. Xiang

引用次数: 3

PDF Not Yet Available In IEEE Xplore PDF尚未在IEEE explore中提供

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 1900-01-01 DOI: 10.1109/cleo.2007.4453259

引用次数: 8

Evaluation of Wireless Mesh Network Handoff Approaches for Public Safety and Disaster Recovery Networks 公共安全和灾难恢复网络无线Mesh网络切换方法的评估

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 1900-01-01 DOI: 10.1109/ATNAC.2008.4783339

R. Wishart, M. Portmann, J. Indulska

{"title":"Evaluation of Wireless Mesh Network Handoff Approaches for Public Safety and Disaster Recovery Networks","authors":"R. Wishart, M. Portmann, J. Indulska","doi":"10.1109/ATNAC.2008.4783339","DOIUrl":"https://doi.org/10.1109/ATNAC.2008.4783339","url":null,"abstract":"In public safety and disaster recovery (PSDR) scenarios, reliable communication is an imperative. Unfortunately, communication infrastructure is often destroyed or overwhelmed by whatever precipitated the scenario (e.g., a hurricane or terrorist attack). Thus, the PSDR workers must often deploy their own communications infrastructure on-site. Wireless mesh networks (WMN) have been identified as being ideally suited to this task. WMN offer a high-capacity wireless backhaul network, provided by mesh routers, through which clients can connect to one another or with external networks. Mobility of clients within the mesh is particularly important for public service and disaster recovery scenarios. This creates a challenging problem as clients may move out of range of the mesh router they were using to connect to the mesh and need to associate with another. Client handoff mechanisms provide this functionality. In this paper we provide a critical survey of client handoff approaches applicable to IEEE 802.11 WMN evaluating them based on the strict QoS requirements established by the US Department of Homeland Security for PSDR networks.","PeriodicalId":143803,"journal":{"name":"2008 Australasian Telecommunication Networks and Applications Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125734873","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: 13

PDF Not Yet Available In IEEE Xplore PDF尚未在IEEE explore中提供

2008 Australasian Telecommunication Networks and Applications Conference Pub Date : 1900-01-01 DOI: 10.1109/pedes.2006.344308

引用次数: 0