2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)最新文献_第2页

3GPP LTE traffic offloading onto WiFi Direct 3GPP LTE流量卸载到WiFi Direct

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533328

Alexander Pyattaev, Kerstin Johnsson, S. Andreev, Y. Koucheryavy

{"title":"3GPP LTE traffic offloading onto WiFi Direct","authors":"Alexander Pyattaev, Kerstin Johnsson, S. Andreev, Y. Koucheryavy","doi":"10.1109/WCNCW.2013.6533328","DOIUrl":"https://doi.org/10.1109/WCNCW.2013.6533328","url":null,"abstract":"Mobile network operators are struggling to handle the rapidly increasing amounts of data traffic on their networks. As a result, 3GPP is currently investigating possible scenarios for device-to-device (D2D) offloading in LTE networks. However, it remains unclear what kinds of gains can be expected from in-band D2D solutions. By comparison, the already available WiFi Direct D2D technology enables offloading onto unlicensed bands at data rates generally higher than infrastructure cellular links. In this paper1, we study the performance of WiFi Direct as a prominent technology for D2D communications in urban environments. We also discuss some of the potential performance gains for WiFi Direct communications in the presence of 3GPP LTE network-level management. Our extensive simulation study of LTE traffic offloading onto WiFi Direct covers a range of D2D loads and interference levels. We focus on the case where the D2D overlay network is assisted by the cellular infrastructure network; or more specifically, where the cellular network supplies its clients with service discovery information to facilitate the establishment of D2D sessions.","PeriodicalId":112418,"journal":{"name":"2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131223934","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: 134

A performance comparison of DTN protocols for high delay optical channels 高时延光信道DTN协议的性能比较

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533337

Paul Muri, J. Mcnair

{"title":"A performance comparison of DTN protocols for high delay optical channels","authors":"Paul Muri, J. Mcnair","doi":"10.1109/WCNCW.2013.6533337","DOIUrl":"https://doi.org/10.1109/WCNCW.2013.6533337","url":null,"abstract":"Designed for long propagation delay and frequent channel disruptions, delay tolerant networking (DTN) protocols are supporting the latest proposed optical space internetworking communication missions. While previous DTN-based testbeds experimented with bandwidth capacity in megabits, this paper presents a channel emulation testbed that supports multiple gigabit-bandwidth Ethernet clients and servers simultaneously. In addition to capacity, this testbed modeled optical link properties with channel emulation, and provided high flexibility by utilizing virtual LANs and link aggregation connected through a gigabit switch. The testbed emulated propagation delay, asynchronous channel rates, and bit errors, including free-space optical bit errors that varied as a function of time. We emulated an optical flight terminal relaying data between ground stations, and measured the maximum goodput of various DTN configurations while increasing the relay's round trip times. Results showed that for a 200 ms to one second round trip time, BP/TCPCL/TCP transmitted higher goodput than BP/LTP/UDP, and TCP/IP. For round trip times longer than one second, BP/LTP/UDP transmitted higher goodput than BP/TCPCL/TCP, and TCP/IP.","PeriodicalId":112418,"journal":{"name":"2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"5 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113999508","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 decentralized adaptive TDMA scheduling strategy for VANET 基于VANET的分散自适应TDMA调度策略

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533343

W. Ke, Weidong Yang, Lilu Pan, Hongsong Zhu

引用次数: 15

Massive MIMO or small cell network: Who is more energy efficient? 大规模MIMO还是小型蜂窝网络:谁更节能?

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533309

Wenjia Liu, Shengqian Han, Chenyang Yang, Chengjun Sun

{"title":"Massive MIMO or small cell network: Who is more energy efficient?","authors":"Wenjia Liu, Shengqian Han, Chenyang Yang, Chengjun Sun","doi":"10.1109/WCNCW.2013.6533309","DOIUrl":"https://doi.org/10.1109/WCNCW.2013.6533309","url":null,"abstract":"Energy efficiency (EE) is becoming an important design goal for wireless communication systems providing high spectral efficiency (SE). Both massive multi-input multi-output (MIMO) and small cell network (SCN) are expected to achieve high EE for high throughput cellular networks, though using different mechanisms. Massive MIMO improves EE by exploiting a large array gain, while SCN improves EE by deploying a large number of low-power base stations (BSs) to reduce the propagation loss and increase the opportunity of BS sleep. In this paper, we compare the EEs as well as the SEs of Massive MIMO and SCN. For a fair comparison, we consider a multi-cell network with the same user density, antenna density and average cell-edge signal-to-noise-ratio (SNR). Perfect channel information is assumed, and three BS sleep strategies are considered. Our analysis shows that the EE of SCN increases with the cell size shrinking, and the achievable SEs of SCN and Massive MIMO increase with the cell-edge SNR. When the number of cells is large, SCN is always more energy efficient than Massive MIMO. On the other hand, when the number of cells is small, Massive MIMO achieves higher EE than SCN when the circuit power consumptions of Massive MIMO are much lower than SCN.","PeriodicalId":112418,"journal":{"name":"2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130337008","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: 88

Cooperative Sleep-mode and performance modeling for heterogeneous mobile network 异构移动网络的协同睡眠模式及性能建模

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533306

G. Wu, G. Feng, Shuang Qin

引用次数: 13

A method for pico-specific upper bound CRE bias setting in HetNet 一种在HetNet中设置微特异性上界CRE偏置的方法

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533320

Yanzan Sun, Tianle Deng, Yong Fang, Min Wang, Yating Wu

引用次数: 11

Optimal Tomlinson-Harashima precoding for physical layer network coding 物理层网络编码的最优Tomlinson-Harashima预编码

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533335

A. Schmidt, R. Schober, W. Gerstacker

引用次数: 2

Wavelet BEM based channel estimation over rapidly time-varying channels 基于小波边界元的快速时变信道估计

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533318

Hua Yang, Jian Xiong, Suyue Li, Lin Gui

引用次数: 8

Precoding design for denoise-and-forward network coding in MIMO two-way relay systems MIMO双向中继系统中去噪前向网络编码的预编码设计

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533329

Zhongyuan Zhao, B. Han, Xinqian Xie, Wenbo Wang, M. Peng

引用次数: 1

eCOPE: Energy efficient network coding scheme in multi-rate wireless networks 多速率无线网络中的高能效网络编码方案

2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) Pub Date : 2013-04-07 DOI: 10.1109/WCNCW.2013.6533308

Keyin Xiao, Yide Zhang, G. Feng, X. Duan, Jiang Zhu, Ziyan Liu

{"title":"eCOPE: Energy efficient network coding scheme in multi-rate wireless networks","authors":"Keyin Xiao, Yide Zhang, G. Feng, X. Duan, Jiang Zhu, Ziyan Liu","doi":"10.1109/WCNCW.2013.6533308","DOIUrl":"https://doi.org/10.1109/WCNCW.2013.6533308","url":null,"abstract":"Recently energy-efficient system design in wireless networks, which in nature supports multi-rate transmissions, has become a focus in the research field. Meanwhile network coding has been proven as a very promising technique to improve wireless network throughput and energy-efficiency (EE). In multi-rate wireless networks, simply seeking more coding opportunities or coding more packets into one frame without exploiting multi-rate feature may lead to selecting low-rate links for transmission, and thus compromise the performance gain and EE brought by network coding. In this paper, we aim at exploiting the potential benefits brought by both multi-rate and network coding. We carefully address the bottleneck problem in applying energy-efficient network coding to multi-rate networks, and propose an energy-efficient COPE-like network coding scheme, which is called eCOPE and employs the energy-efficient Rate Adaptation(eRA) and Power Allocation(ePA) algorithm. Simulation experiments results based on NS-2 demonstrate that eCOPE can significantly improve network performances in terms of both throughput and end-to-end delay in 802.11 DCF multirate environment, at a relatively low cost of signaling overhead.","PeriodicalId":112418,"journal":{"name":"2013 IEEE Wireless Communications and Networking Conference Workshops (WCNCW)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121942198","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