2014 IEEE Global Communications Conference最新文献_第3页

Analysis of a network coding-aware MAC protocol for IEEE 802.11 wireless networks with Reverse Direction transmissions 基于反向传输的IEEE 802.11无线网络的网络编码感知MAC协议分析

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036975

Raúl Palacios, H. Haile, J. Alonso-Zarate, F. Granelli

{"title":"Analysis of a network coding-aware MAC protocol for IEEE 802.11 wireless networks with Reverse Direction transmissions","authors":"Raúl Palacios, H. Haile, J. Alonso-Zarate, F. Granelli","doi":"10.1109/GLOCOM.2014.7036975","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7036975","url":null,"abstract":"The implementation of Network Coding (NC) in IEEE 802.11-based wireless networks presents the important challenge of providing additional transmission priority for the relay nodes responsible for coding. These nodes are able to convey more information in each transmission than those that forward single packets, by combining several received packets in a single coded packet. To transmit data, the nodes execute the IEEE 802.11 Medium Access Control (MAC) protocol, called the Distributed Coordination Function (DCF). Thus, they compete for the access to the wireless channel and get equal transmission opportunities under high congestion. As a result, congested relay nodes will severely limit the performance of the network. In this paper, we investigate a backwards-compatible mechanism, called Reverse Direction DCF (RD-DCF), that allows relay nodes to transmit data upon successful reception of data. We analyze the performance limits of the proposed protocol with and without NC in terms of throughput and energy efficiency. The performance evaluation considers different traffic loads, packet lengths, and data rates. The results of this work show that the proposed RD-DCF+NC protocol can improve throughput and energy efficiency up to 335% when compared to legacy DCF.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"53 1","pages":"1218-1224"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75190873","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

Wireless information and energy transfer in interference aware massive MIMO systems 感知干扰的大规模MIMO系统中的无线信息和能量传输

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037192

Hengzhi Wang, Wei Wang, Xiaoming Chen, Zhaoyang Zhang

引用次数: 31

Hotspot discovery algorithms in coverage selection model over VANETs VANETs覆盖选择模型中的热点发现算法

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036798

Huang Cheng, Xin Fei, A. Boukerche, M. Almulla

引用次数: 0

Heterogeneous network throughput with hybrid-duplex systems 混合双工系统的异构网络吞吐量

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037372

Jemin Lee, Tony Q. S. Quek

引用次数: 2

QoS-aware energy-efficient multicast for multi-view video in indoor small cell networks 室内小蜂窝网络中多视点视频qos感知节能组播

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037513

Quanxin Zhao, Y. Mao, S. Leng, Yuming Jiang

{"title":"QoS-aware energy-efficient multicast for multi-view video in indoor small cell networks","authors":"Quanxin Zhao, Y. Mao, S. Leng, Yuming Jiang","doi":"10.1109/GLOCOM.2014.7037513","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7037513","url":null,"abstract":"Multi-view video (MVV) consists of multiple video streams captured simultaneously by multiple closely spaced cameras and enables users to freely change their viewpoints by playing different video streams. Those close deployed cameras will capture overlapping frames (OFs) and then transmit OFs in multiple video streams. With the viewpoint change from one stream to another, redundant OFs in the latter stream can be useless for a user. Moreover, the redundant transmission will increase with the number of users and result in severe bandwidth waste for both base stations and users. In order to reduce the redundant transmission of OFs and increase energy efficiency (EE), a new architecture Overlapping Reduced Multi-view Video Transmission (ORMVVT), which is based on User dependent Multi-view video Streaming for Multi-users (UMSM), is proposed for downlink transmission of MVV in small cell networks (SCNs). Then, a novel resource allocation model is introduced to help users achieve different data rates according to their Quality of Service (QoS) requirements. Contrarily, for the simplicity of implementation, existing schemes can only support a single reception data rate for all users in a multicast group. Further, we formulate an optimization problem to maximize the EE with the QoS constraint of services. Finally, a suboptimal QoS-aware Energy-efficient Multicast Resource Allocation scheme (QEMRA) is proposed to reduce the computational complexity. Numerical results show that the proposed low-complexity QEMRA scheme is able to get a close-to-optimal performance under general fading distributions.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"23 1","pages":"4478-4483"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75519194","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

Soft-iterative magnitude demodulation 软迭代幅度解调

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037303

M. Gomes, V. Silva, F. Cercas, M. Tomlinson

引用次数: 0

Exploiting channel-aware reputation system against selective forwarding attacks in WSNs 利用通道感知信誉系统对抗无线传感器网络中的选择性转发攻击

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036829

Ju Ren, Yaoxue Zhang, Kuan Zhang, Xuemin Shen

{"title":"Exploiting channel-aware reputation system against selective forwarding attacks in WSNs","authors":"Ju Ren, Yaoxue Zhang, Kuan Zhang, Xuemin Shen","doi":"10.1109/GLOCOM.2014.7036829","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7036829","url":null,"abstract":"Wireless sensor networks (WSNs) are vulnerable to selective forwarding attacks that selectively drop a subset of the forwarding packets to degrade network performances. Due to unstable wireless channels, the packet loss rate between sensor nodes might be high, especially in hostile environments. Therefore, it is difficult to distinguish the malicious drop and normal packet loss. In this paper, we propose a Channel-aware deputation System (CRS) to identify selective forwarding misbehaviours from normal packet losses caused by poor channel quality or medium access collision. Specifically, CRS is based on normal packet loss estimation and neighbour monitoring. Each node maintains a reputation table to evaluate forwarding behaviours of its neighbours. Reputation value is determined by the deviation of the monitored packet loss rate and estimated normal loss rate. The nodes with reputation below a threshold are identified as misbehaving nodes and isolated from data forwarding paths. Furthermore, we develop weighted reputation propagation and integration functions to improve detection efficiency. Through theoretical analysis and extensive simulations, we demonstrate that CRS can accurately detect selective forwarding attacks and significantly improve the network throughput.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"180 1","pages":"330-335"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72586042","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: 15

On the value of collaboration in multidimensional location estimation 论协同在多维位置估计中的价值

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036857

J. Schloemann, R. Buehrer

引用次数: 5

Characterization of aggregate interference in arbitrarily-shaped underlay cognitive networks 任意形状的底层认知网络中聚合干扰的表征

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7036933

Jing Guo, S. Durrani, Xiangyun Zhou

{"title":"Characterization of aggregate interference in arbitrarily-shaped underlay cognitive networks","authors":"Jing Guo, S. Durrani, Xiangyun Zhou","doi":"10.1109/GLOCOM.2014.7036933","DOIUrl":"https://doi.org/10.1109/GLOCOM.2014.7036933","url":null,"abstract":"This paper characterizes the aggregate interference at the primary user (PU) due to M secondary users (SUs) in an underlay cognitive network, where appropriate SU activity protocols are employed in order to limit the interference generated by the SUs. Different from prior works, we assume that the PU can be located anywhere inside an arbitrarily-shaped convex network region. Using the moment generating function (MGF) of the interference from a random SU, we derive general expressions for the n-th moment and the n-th cumulant of the aggregate interference for guard zone and multiple-threshold SU activity protocols. Using the cumulants, we study the convergence of the distribution of the aggregate interference to a Gaussian distribution. In addition, we compare the well-known closed-form distributions in the literature to approximate the complementary cumulative distribution function (CCDF) of the aggregate interference. Our results show that care must be undertaken in approximating the aggregate interference as a Gaussian distribution, even for a large number of SUs, since the convergence is not monotonie in general. In addition, the shifted lognormal distribution provides the overall best CCDF approximation, especially in the distribution tail region, for arbitrarily-shaped network regions.","PeriodicalId":6492,"journal":{"name":"2014 IEEE Global Communications Conference","volume":"299302 1","pages":"961-966"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77884950","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

A distributed energy consumption optimization algorithm for content-centric networks via dual decomposition 基于对偶分解的内容中心网络分布式能耗优化算法

2014 IEEE Global Communications Conference Pub Date : 2014-12-01 DOI: 10.1109/GLOCOM.2014.7037077

Chao Fang, F. Yu, Tao Huang, Jiang Liu, Yun-jie Liu

引用次数: 4