2012 1st IEEE International Conference on Communications in China (ICCC)最新文献_第2页

Multiuser Effective Capacity analysis for Queue Length Based Rate Maximum wireless scheduling 基于队列长度的速率最大无线调度的多用户有效容量分析

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356922

Zhengyong Feng, Guang-jun Wen, Chang Wen Chen

{"title":"Multiuser Effective Capacity analysis for Queue Length Based Rate Maximum wireless scheduling","authors":"Zhengyong Feng, Guang-jun Wen, Chang Wen Chen","doi":"10.1109/ICCChina.2012.6356922","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356922","url":null,"abstract":"Recently the Effective Capacity of multi-user wireless scheduling has been analyzed based on large deviation principle. The users' queue length distribution bound of wireless scheduling algorithm such as round robin and rate maximum was discussed based on Effective Capacity analysis. But for Queue Length Based (QLB) Rate Maximum scheduling algorithm, the analysis result is only limited to system bound performance and not for each user's bound performance. In this paper we consider each user's amount of input traffic and channel statistical characteristics and introduce a new Effective Capacity analysis model for QLB scheduling algorithm. The queue length distribution bound of the QLB scheduling algorithm for each user is then predicted by the proposed analysis model. Based on the predicted queue length distribution bound, we can set different queue length threshold, that is, delay constraint (queue length can be translated to delay) for each user to obtain different queue length violation (or delay constraint violation or queue overflow) probability. Then the effect of each user's amount of input traffic to their queue length (or delay constraint) violation probability in multiuser environment is analyzed. The proposed analysis model and the estimation results have been verified by numerical simulations.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134086356","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 centrally-controlled intelligent protection switching scheme for WDM-PONs 一种wdm - pon集中控制智能保护开关方案

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356887

Min Zhu, W. Zhong, S. Xiao

{"title":"A centrally-controlled intelligent protection switching scheme for WDM-PONs","authors":"Min Zhu, W. Zhong, S. Xiao","doi":"10.1109/ICCChina.2012.6356887","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356887","url":null,"abstract":"Several protection schemes have been proposed for wavelength division multiplexed passive optical networks (WDM-PONs). However these schemes only work under the assumption that all the optical network units (ONUs) and the optical light terminal (OLT) continuously transmit optical signals. In practice, some ONUs may be in sleep mode to save power consumption or may be shut down whenever users are offline. Under such scenarios, the existing schemes would not work. To deal with more practical operation scenarios, we propose a centrally controlled intelligent protection switching scheme for survivable WDM-PONs. It provides 1:1 downstream protection and 1+1 upstream protection capabilities. A novel logic decision unit in conjunction with a power monitoring unit is implemented in the OLT to enable the intelligent protection switching in more practical operation scenarios. Moreover, by monitoring the optical power of each channel on both working and protection paths, our proposed protection scheme can tell the connection status of every fiber path, thus facilitating a faster failure recovery. The scheme feasibility is experimentally verified with 10 Gbit/s downstream and 1.25 Gbit/s upstream transmissions.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134366852","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: 0

Empirical performance evaluation of data dissemination mechanisms for spot applications 现场应用数据传播机制的实证性能评价

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356977

A. E. Fawal, J. Boudec, A. Aziz

{"title":"Empirical performance evaluation of data dissemination mechanisms for spot applications","authors":"A. E. Fawal, J. Boudec, A. Aziz","doi":"10.1109/ICCChina.2012.6356977","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356977","url":null,"abstract":"We evaluate, by measurements on a real testbed, the performance of networking services required for spot applications. We call a “spot application” an application for smartphones (such as “Ad-hoc Flash Sales”) that disseminates information in a local neighborhood through hop-by-hop wireless forwarding. The dissemination environment is challenging. It is open-ended, and highly dynamic with very limiting resource constraints. We define five success criteria that are required by a spot application to ensure a sustainable dissemination. They cover issues such as adaptability, resource conserving and co-existence with TCP applications. We evaluate a package of mechanisms and we identify how those, through their interaction, can altogether meet these criteria. This package includes flow control, forwarding factor control and buffer management. Our measurements are carried out on a realistic testbed composed of 50 wireless devices. Our metrics include spread, application rate, forwarding factor and delay. Some findings are: blind mechanisms can interact among each other to meet the success criteria; aging entails intolerable processing complexity for smartphones; and TTL-based buffer management performs poorly with large buffer size.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134390646","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: 0

Analysis of express forwarding schemes in wireless mesh networks 无线网状网络中快件转发方案分析

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356872

Jiazhen Zhou, K. Mitchell, R. Hu, Y. Qian

引用次数: 1

Combined bulk and per-tone relay selection in cooperative OFDM systems 协同OFDM系统中分组中继和按音中继的组合选择

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356932

Yixin Li, Wenjin Wang, F. Zheng

引用次数: 18

Throughput performance of V-BLAST-enabled wireless ad hoc networks 支持v - blast的无线自组织网络的吞吐量性能

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356971

Fadhil Firyaguna, Ana Carolina O. Christofaro, Everton A. L. Andrade, T. S. Bonfim, Marcelo M. Carvalho

引用次数: 2

Smart-blocking file storage method in cloud computing 云计算中的智能阻断文件存储方法

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356951

K. Fan, L. Zhao, Xuemin Shen, Hui Li, Yintang Yang

{"title":"Smart-blocking file storage method in cloud computing","authors":"K. Fan, L. Zhao, Xuemin Shen, Hui Li, Yintang Yang","doi":"10.1109/ICCChina.2012.6356951","DOIUrl":"https://doi.org/10.1109/ICCChina.2012.6356951","url":null,"abstract":"Cloud storage is one of the underlying services in cloud computing. However, there are some critical issues in file storage which should be resolved urgently, such as the blocking file storage. In order to solve the shortages of hot file storage and parallel computing support issues in fixed-blocking storage, we propose a smart-blocking file storage method in this paper. By setting up 6 grouping factors, the method can determine whether the file should be blocked or not automatically depending on the size of the file and the client bandwidth. The proposed method can block the file into similar size sub-blocks as large as possible when the file is judged to be blocked. Normally the size of the last sub-block is smaller than other similar sub-blocks. But the gap maintains within the size of the next smaller grouping factor. The Metadata server can address the hot files when the file is blocked. In addition, the proposed method also defines the file uniformity and the system uniformity to quantitatively describe the uniformity of sub-blocks in the file and in the whole system. Analysis and simulation demonstrate the proposed method has better system uniformity in file storage, the node load balance caused by hot file, and a large number of file fragments reduction.","PeriodicalId":154082,"journal":{"name":"2012 1st IEEE International Conference on Communications in China (ICCC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115571078","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

Noncoherent coded space-time modulation for a large number of transmit antennas 大量发射天线的非相干编码空时调制

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356905

Yen-ming Chen, Yeong-Luh Ueng, Hau-Jung Shiau, Dung-Rung Hsieh, Jen-Yuan Hsu, Pangan Ting

引用次数: 2

Using simple relays to improve physical-layer security 使用简单中继提高物理层安全性

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356902

G. Zheng, Jiangyuan Li, Kai‐Kit Wong, A. Petropulu, B. Ottersten

引用次数: 15

Performance evaluation and analysis of bundle protocol in cislunar communications 月月通信中束协议的性能评价与分析

2012 1st IEEE International Conference on Communications in China (ICCC) Pub Date : 2012-11-26 DOI: 10.1109/ICCChina.2012.6356945

D. Zhou, Mingchuan Yang, Qing Guo

引用次数: 2