2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)最新文献_第3页

Assessment of packet latency on the 4G LTE S1-U interface: Impact on end-user throughput 4G LTE S1-U接口的分组延迟评估:对终端用户吞吐量的影响

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314072

A. Rusan, R. Vasiu

{"title":"Assessment of packet latency on the 4G LTE S1-U interface: Impact on end-user throughput","authors":"A. Rusan, R. Vasiu","doi":"10.1109/SOFTCOM.2015.7314072","DOIUrl":"https://doi.org/10.1109/SOFTCOM.2015.7314072","url":null,"abstract":"4th Generation Long Term Evolution (4G LTE) networks are about to become the standard in mobile communications. These networks' backhaul transport for the LTE user and signaling traffic needs to operate in various environments and over a wide variety of networks built on a mix of technologies and equipments. All network elements of such a network are interconnected over other wired and wireless network technologies, each with performance characteristics of their own - and performance issues which will often be translated into issues seen on the overall LTE network performance. It is important to understand this behavior and the interdependencies in order to understand how to optimize and eventually predict performance of 4G LTE networks. Since 4G LTE itself is a full IP-based network, this means understanding and assessing the effect of IP impairments on LTE and its transport links. In this paper, we analyze the impact of backhaul packet delay (latency) on the LTE S1-U interface, which provides user plane transport between the Core Network and the Evolved NodeBs. We emulate different packet delays on the S1-U interface, measuring the impact on end-user throughput and discussing the results. We use a custom, self-built IP Impairment Tool: its flexible, cost-effective and mobile concept allows quick and easy integration and testing even on live commercial-grade LTE networks.","PeriodicalId":264787,"journal":{"name":"2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115579435","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

Automatic parameter tuning for Class-Based Virtual Machine Placement in cloud infrastructures 云基础设施中基于类的虚拟机放置的自动参数调整

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314075

C. Canali, R. Lancellotti

{"title":"Automatic parameter tuning for Class-Based Virtual Machine Placement in cloud infrastructures","authors":"C. Canali, R. Lancellotti","doi":"10.1109/SOFTCOM.2015.7314075","DOIUrl":"https://doi.org/10.1109/SOFTCOM.2015.7314075","url":null,"abstract":"A critical task in the management of Infrastructure as a Service cloud data centers is the placement of Virtual Machines (VMs) over the infrastructure of physical nodes. However, as the size of data centers grows, finding optimal VM placement solutions becomes challenging. The typical approach is to rely on heuristics that improve VM placement scalability by (partially) discarding information about the VM behavior. An alternative approach providing encouraging results, namely Class-Based Placement (CBP), has been proposed recently. CBP considers VMs divided in classes with similar behavior in terms of resource usage. This technique can obtain high quality placement because it considers a detailed model of VM behavior on a per-class base. At the same time, scalability is achieved by considering a small-scale VM placement problem that is replicated as a building block for the whole data center. However, a critical parameter of CBP technique is the number (and size) of building blocks to consider. Many small building blocks may reduce the overall VM placement solution quality due to fragmentation of the physical node resources over blocks. On the other hand, few large building blocks may become computationally expensive to handle and may be unsolvable due to the problem complexity. This paper addresses this problem analyzing the impact of block size on the performance of the VM class-based placement. Furthermore, we propose an algorithm to estimate the best number of blocks. Our proposal is validated through experimental results based on a real cloud computing data center.","PeriodicalId":264787,"journal":{"name":"2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123247245","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

Measurement of DVB-S and DVB-S2 parameters DVB-S和DVB-S2参数测量

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314105

K. Malaric, Ivan Suc, I. Bacic

{"title":"Measurement of DVB-S and DVB-S2 parameters","authors":"K. Malaric, Ivan Suc, I. Bacic","doi":"10.1109/SOFTCOM.2015.7314105","DOIUrl":"https://doi.org/10.1109/SOFTCOM.2015.7314105","url":null,"abstract":"Satellite television is probably most used satellite technology today. One of the biggest providers is the ASTRA system of geostationary satellites. Television satellite standard widely used is the DVB-S which established a unified standard for a satellite transmission accepted both by customers as well as the industry. Standard DVB-S2 has improvements in efficiency (bits/Hz) and adaptive as well as variable coding and modulation. While DVB-S digital satellite standard has constant modulation and coding, standard DVB-S2 can adopt both modulation and coding depending on the weather conditions, channel interference, etc. Both technologies still co-exist today. This paper analyses the parameters of both DVB-S and DVB-S2 standards such as bit error rate, modulation error rate, signal to noise ratio and signal level in different weather conditions. The measurements were performed in clear sky, clouds and rain conditions. They included extensive coverage of digital video signal in thirty different weather conditions. The results showed that DVB-S2 standard performs similar to DVB-S standard in clear sky conditions as well as cloudy weather, while for rain DVB-S2 excels. Bit error rate for DVB-S2 standard stayed the same regardless of weather conditions and about four orders of magnitude compared to DVB-S standard.","PeriodicalId":264787,"journal":{"name":"2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130163372","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

Evolution of a double-exponential pulse signal in a rectangular cavity filled with a plasma 双指数脉冲信号在充满等离子体的矩形腔中的演化

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314092

F. Erden

引用次数: 1

Analyzing incoming workload in Cloud business services 分析云业务服务中的传入工作负载

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314068

Nikola Tanković, N. Bogunovic, Tihana Galinac Grbac, M. Zagar

{"title":"Analyzing incoming workload in Cloud business services","authors":"Nikola Tanković, N. Bogunovic, Tihana Galinac Grbac, M. Zagar","doi":"10.1109/SOFTCOM.2015.7314068","DOIUrl":"https://doi.org/10.1109/SOFTCOM.2015.7314068","url":null,"abstract":"A recent trend, movement of software applications to Cloud, provides among numerous benefits, an important model for infrastructure cost reduction using the pay-as-you-go concept. In our experiments, we noticed that software distribution may significantly influence cost benefits achieved in Cloud. Software distribution optimization requires a continuous information influx on key metrics characterizing incoming workload. In this paper we propose a method for modeling workloads of business applications characterized by nonuniform distribution over the day. Two important properties are described: (1) modeling and forecasting repeatable patterns observed in the business context, and (2) modeling the inter-arrival time distribution of service requests. While former is important for constructing automated capacity planning controllers, latter is required for describing the amount of traffic variability. We analyzed these properties on a two-month workload collected from a production business services used by several thousand customers in retail domain in Croatia. Based on this analysis, we propose a high-level design of a quality of service controller applicable to business services in cloud environment.","PeriodicalId":264787,"journal":{"name":"2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"87 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127995343","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

Modeling fuzzy rules for managing power consumption of ethernet switch 以太网交换机功耗管理的模糊规则建模

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314106

Alifia Fithritama, É. Rondeau, V. Bombardier, J. Georges

{"title":"Modeling fuzzy rules for managing power consumption of ethernet switch","authors":"Alifia Fithritama, É. Rondeau, V. Bombardier, J. Georges","doi":"10.1109/SOFTCOM.2015.7314106","DOIUrl":"https://doi.org/10.1109/SOFTCOM.2015.7314106","url":null,"abstract":"Surveys in ISP and telecommunication companies around the world showed that power consumption of network significantly elevated over the years. Furthermore, studies indicated that major contributors to the power consumption of network are the power consumed by routers and switch during the runtime. Therefore, minimizing the power consumption of these network equipments is becoming an issue of increasing importance in the field of green network. To minimize the power consumption of the network, it is important to identify the relationship between network parameters and their effect on power consumption of the network equipments. The objective of this paper is to propose a method, based on fuzzy logic, to identify this relationship and use it to predict/ estimate the saving of power consumption when deploying new network equipments. Moreover, it can also be developed as a strategy to control the desired level of power consumption by tuning the network parameters. This study only focuses on impact of four network parameters, which are bandwidth, number of connections, traffic-load, and hibernation-mode, to the power consumption of an Ethernet switch. A test bed of extensive experimentations is implemented in order to measure the data to cover all possible combination of scenarios.","PeriodicalId":264787,"journal":{"name":"2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129231405","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: 6

Architectures for an efficient SMS Gateway service 高效短信网关服务的体系结构

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314071

C. Taddia, G. Mazzini

引用次数: 4

Adaptive modulation and coding scheme for MB-OFDM UWB systems MB-OFDM超宽带系统的自适应调制与编码方案

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314065

H. Chihi, R. D. Lacerda, R. Bouallègue

引用次数: 5

A modular sampling framework for flexible traffic analysis 灵活流量分析的模块化采样框架

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314061

J. M. Silva, P. Carvalho, S. R. Lima

{"title":"A modular sampling framework for flexible traffic analysis","authors":"J. M. Silva, P. Carvalho, S. R. Lima","doi":"10.1109/SOFTCOM.2015.7314061","DOIUrl":"https://doi.org/10.1109/SOFTCOM.2015.7314061","url":null,"abstract":"The paradigm of having everyone and everything connected in an ubiquitous way poses huge challenges to today's networks due to the massive traffic volumes involved. To turn treatable all network tasks requiring traffic analysis, sampling the traffic has become mandatory triggering substantial research in the area. Aiming at fostering the deployment and tuning of new sampling techniques, this paper presents a flexible sampling framework developed following a multilayer design in order to easily set up the characteristics of a sampling technique according to the measurement task to be assisted. The framework implementation relies on a comprehensive sampling taxonomy which identifies the granularity, selection scheme and selection trigger as the inner characteristics distinguishing current sampling proposals. As proof of concept of the versatility of this framework in testing the suitability of distinct sampling schemes, this work provides a comparative performance evaluation of classical and recent sampling techniques regarding the estimation accuracy, the volume of data involved in the sampling process and the computational weight in terms of CPU and memory usage.","PeriodicalId":264787,"journal":{"name":"2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125535284","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

Intelligent type 2 fuzzy-based mobile application for indoor geolocalization 基于智能2型模糊的室内地理定位移动应用

2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2015-11-02 DOI: 10.1109/SOFTCOM.2015.7314101

Noura Baccar, R. Bouallègue

{"title":"Intelligent type 2 fuzzy-based mobile application for indoor geolocalization","authors":"Noura Baccar, R. Bouallègue","doi":"10.1109/SOFTCOM.2015.7314101","DOIUrl":"https://doi.org/10.1109/SOFTCOM.2015.7314101","url":null,"abstract":"Geolocalization is a keyword for the emerging location-based applications. This paper presents a new architecture of a geolocalization Android application based on artificial intelligence concept. Our approach considers two contributions: In the learning stage, the system provides an interval-type 2 Fuzzy logic (IT2 FL) processing of the collected radio signal strength (RSS) fingerprints from the Wi-Fi access points. The second contribution is on the output side, a fuzzy location indicator (FLI) is defined to characterize the map zones and rooms. FLIs are type 1 fuzzy sets that will ensure linguistic localization. Then, a Wang-Mendel algorithm is applied to generate the rule base mapping the RSS and their corresponding FLI. For the online stage, the algorithm is implemented and tested using an indoor localization mobile application through the Cynapsys company premises. Using this intelligent localization algorithm based on (IT2 FL), the application has proved better positioning accuracy then classical Wi-Fi fingerprinting systems in zone level and presents ergonomic positioning process through the linguistic learning.","PeriodicalId":264787,"journal":{"name":"2015 23rd International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121226860","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: 6