首页 > 最新文献

2015 European Conference on Networks and Communications (EuCNC)最新文献

英文 中文
Analysis of the impact of FEC techniques on a multicast video streaming service over LTE FEC技术对LTE多播视频流服务的影响分析
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194072
A. Fuente, C. M. Lentisco, L. Bellido, R. P. Leal, E. Pastor, A. G. Armada
In a multicast video streaming service the same multimedia content is sent to a mass audience using only one multicast stream. In multicast video streaming over a cellular network, due to the nature of the multicast communication, from a source to multiple recipients, and due to the characteristics of the radio channel, different for each receiver, transmission errors are addressed at the application level by using Forward Error Correction (FEC) techniques. However, in order to protect the communication over the radio channel, FEC techniques are also applied at the physical layer. Another important technique to improve the communication of the radio channel is the use of a single-frequency network. This paper analyzes the performance of a video streaming service over a cellular network taking into account the combined impact of different factors that affect the transmission, both the physical deployment of the service and the two levels of FEC.
在多播视频流服务中,相同的多媒体内容仅使用一个多播流发送给大量受众。在蜂窝网络上的多播视频流中,由于多播通信的性质,从一个源到多个接收方,以及由于无线电信道的特性,每个接收方都不同,传输错误通过使用前向纠错(FEC)技术在应用级别解决。然而,为了保护无线信道上的通信,FEC技术也被应用于物理层。另一项改善无线电信道通信的重要技术是使用单频网络。本文分析了蜂窝网络上视频流服务的性能,考虑了影响传输的不同因素的综合影响,包括服务的物理部署和两个级别的FEC。
{"title":"Analysis of the impact of FEC techniques on a multicast video streaming service over LTE","authors":"A. Fuente, C. M. Lentisco, L. Bellido, R. P. Leal, E. Pastor, A. G. Armada","doi":"10.1109/EuCNC.2015.7194072","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194072","url":null,"abstract":"In a multicast video streaming service the same multimedia content is sent to a mass audience using only one multicast stream. In multicast video streaming over a cellular network, due to the nature of the multicast communication, from a source to multiple recipients, and due to the characteristics of the radio channel, different for each receiver, transmission errors are addressed at the application level by using Forward Error Correction (FEC) techniques. However, in order to protect the communication over the radio channel, FEC techniques are also applied at the physical layer. Another important technique to improve the communication of the radio channel is the use of a single-frequency network. This paper analyzes the performance of a video streaming service over a cellular network taking into account the combined impact of different factors that affect the transmission, both the physical deployment of the service and the two levels of FEC.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128555464","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
Testbed for a LiFi system integrated in streetlights 路灯集成LiFi系统的测试平台
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194129
V. M. Baeza, M. S. Fernández, A. G. Armada, Antonio Royo
In this paper, a functional LiFi real-time testbed implemented on FPGAs is presented. The setup evaluates the performance of our design in a downlink scenario where the transmitter is embedded on the streetlights and a mobile phone's camera is used as receiver, therefore achieving the goal of lighting and communicating simultaneously. To validate the design, simulations of the whole system are performed. where simulations of the channel between streetlight and mobile device show the scope of the reflection in an outdoor environment. The measurements are carried out to characterize the modulator, in particular the FPGA resources and latency due to the encoder blocks. In addition the feasibility of the communication function in presence of the ambient light is verified.
本文介绍了一种基于fpga实现的功能性LiFi实时测试平台。该设置评估了我们的设计在下行场景中的性能,在下行场景中,发射器嵌入在路灯上,手机的摄像头用作接收器,从而实现了照明和通信同时进行的目标。为了验证该设计,对整个系统进行了仿真。其中路灯和移动设备之间通道的模拟显示了在室外环境中反射的范围。测量进行表征调制器,特别是FPGA资源和延迟由于编码器块。此外,还验证了在环境光存在下通信功能的可行性。
{"title":"Testbed for a LiFi system integrated in streetlights","authors":"V. M. Baeza, M. S. Fernández, A. G. Armada, Antonio Royo","doi":"10.1109/EuCNC.2015.7194129","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194129","url":null,"abstract":"In this paper, a functional LiFi real-time testbed implemented on FPGAs is presented. The setup evaluates the performance of our design in a downlink scenario where the transmitter is embedded on the streetlights and a mobile phone's camera is used as receiver, therefore achieving the goal of lighting and communicating simultaneously. To validate the design, simulations of the whole system are performed. where simulations of the channel between streetlight and mobile device show the scope of the reflection in an outdoor environment. The measurements are carried out to characterize the modulator, in particular the FPGA resources and latency due to the encoder blocks. In addition the feasibility of the communication function in presence of the ambient light is verified.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116823092","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
Interference protection of radio astronomy services using cognitive radio spectrum sharing models 基于认知无线电频谱共享模型的射电天文业务干扰防护
Pub Date : 2015-08-13 DOI: 10.1109/EUCNC.2015.7194046
Periola Ayodele, Falowo Olabisi
Radio astronomical services (RASs) use the radio spectrum to observe cosmic sources (Srcs). They are protected from interference by establishing national radio quiet zones (NRQZs). However, NRQZs do not prevent interference from satellite networks with intersatellite links. This causes impairment in directly observing cosmic sources. Therefore, current knowledge of the universe is inaccurate being obtained from filtered signals. However, accurate knowledge can be obtained in RASs via a pristine observation of Srcs using cognitive radio (CR) technology. This paper, examines the suitability of CR spectrum sharing models for interference protection of RASs. It proposes an interference protection framework and investigates the satellite's transmit opportunities using visibility duration data of RASs. It then examines the end to end delay of the satellite network when the framework is used. Simulation is conducted for a constellation of low earth orbit satellites and the obtained results show that transmit opportunities exist for intersatellite links when the interweave spectrum sharing model is used without causing any interference to RASs or significantly increasing the end to end delay.
射电天文服务(RASs)使用无线电频谱观测宇宙源(src)。通过建立国家无线电安静区(NRQZs)来保护它们免受干扰。然而,nrqz不能防止来自卫星间链路的卫星网络的干扰。这对直接观测宇宙源造成了损害。因此,目前对宇宙的认识是不准确的,因为它是从经过过滤的信号中获得的。然而,通过使用认知无线电(CR)技术对Srcs进行原始观察,可以在RASs中获得准确的知识。研究了CR频谱共享模型在红外光谱系统干扰保护中的适用性。提出了一种干扰保护框架,并利用雷达的可见持续时间数据研究了卫星的传输机会。然后在使用该框架时检查卫星网络的端到端延迟。对一个低地球轨道卫星星座进行了仿真,结果表明,采用交织频谱共享模式时,星间链路存在传输机会,且不会对RASs产生干扰,也不会显著增加端到端时延。
{"title":"Interference protection of radio astronomy services using cognitive radio spectrum sharing models","authors":"Periola Ayodele, Falowo Olabisi","doi":"10.1109/EUCNC.2015.7194046","DOIUrl":"https://doi.org/10.1109/EUCNC.2015.7194046","url":null,"abstract":"Radio astronomical services (RASs) use the radio spectrum to observe cosmic sources (Srcs). They are protected from interference by establishing national radio quiet zones (NRQZs). However, NRQZs do not prevent interference from satellite networks with intersatellite links. This causes impairment in directly observing cosmic sources. Therefore, current knowledge of the universe is inaccurate being obtained from filtered signals. However, accurate knowledge can be obtained in RASs via a pristine observation of Srcs using cognitive radio (CR) technology. This paper, examines the suitability of CR spectrum sharing models for interference protection of RASs. It proposes an interference protection framework and investigates the satellite's transmit opportunities using visibility duration data of RASs. It then examines the end to end delay of the satellite network when the framework is used. Simulation is conducted for a constellation of low earth orbit satellites and the obtained results show that transmit opportunities exist for intersatellite links when the interweave spectrum sharing model is used without causing any interference to RASs or significantly increasing the end to end delay.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115344840","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
SDN and NFV integration in generalized mobile network architecture 广义移动网络架构中SDN和NFV的融合
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194059
J. Costa-Requena, Jesus Llorente Santos, Vicent Ferrer Guasch, Kimmo Ahokas, Gopika Premsankar, S. Luukkainen, Oscar Lopez Perez, Mikel Uriarte Itzazelaia, Ijaz Ahmad, Madhusanka Liyanage, M. Ylianttila, Edgardo Montes de Oca
The main drivers for the mobile core network evolution is to serve the future challenges and set the way to 5G networks with need for high capacity and low latency. Different technologies such as Network Functions Virtualization (NFV) and Software Defined Networking (SDN) are being considered to address the future needs of 5G networks. However, future applications such as Internet of Things (IoT), video services and others still unveiled will have different requirements, which emphasize the need for the dynamic scalability of the network functionality. The means for efficient network resource operability seems to be even more important than the future network element costs. This paper provides the analysis of different technologies such as SDN and NFV that offer different architectural options to address the needs of 5G networks. The options under consideration in this paper may differ mainly in the extent of what SDN principles are applied to mobile specific functions or to transport network functions only.
移动核心网演进的主要驱动力是服务未来的挑战,并为需要高容量和低延迟的5G网络铺平道路。不同的技术,如网络功能虚拟化(NFV)和软件定义网络(SDN)正在考虑解决5G网络的未来需求。然而,未来的应用,如物联网(IoT)、视频服务和其他尚未公布的应用,将有不同的需求,这强调了对网络功能动态可扩展性的需求。有效的网络资源可操作性的手段似乎比未来网元成本更重要。本文分析了不同的技术,如SDN和NFV,提供不同的架构选择,以满足5G网络的需求。本文所考虑的选项可能主要在SDN原则应用于移动特定功能或仅应用于传输网络功能的程度上有所不同。
{"title":"SDN and NFV integration in generalized mobile network architecture","authors":"J. Costa-Requena, Jesus Llorente Santos, Vicent Ferrer Guasch, Kimmo Ahokas, Gopika Premsankar, S. Luukkainen, Oscar Lopez Perez, Mikel Uriarte Itzazelaia, Ijaz Ahmad, Madhusanka Liyanage, M. Ylianttila, Edgardo Montes de Oca","doi":"10.1109/EuCNC.2015.7194059","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194059","url":null,"abstract":"The main drivers for the mobile core network evolution is to serve the future challenges and set the way to 5G networks with need for high capacity and low latency. Different technologies such as Network Functions Virtualization (NFV) and Software Defined Networking (SDN) are being considered to address the future needs of 5G networks. However, future applications such as Internet of Things (IoT), video services and others still unveiled will have different requirements, which emphasize the need for the dynamic scalability of the network functionality. The means for efficient network resource operability seems to be even more important than the future network element costs. This paper provides the analysis of different technologies such as SDN and NFV that offer different architectural options to address the needs of 5G networks. The options under consideration in this paper may differ mainly in the extent of what SDN principles are applied to mobile specific functions or to transport network functions only.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114323128","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: 92
Optimizing Cloud-RAN deployments in real-life scenarios using Microwave Radio 使用微波无线电优化现实场景中的Cloud-RAN部署
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194060
Rami Al-obaidi, Aleksandra Checko, H. Holm, H. Christiansen
Cloud Radio Access Network (C-RAN) is a new architecture designed to be the candidate for enabling future mobile networks. However, it will be deployed only if it is economically viable. In this paper we investigate the technological options of C-RAN deployments. By using analytical methods we derive engineering guidelines for minimizing the CAPital EXpenditure (CAPEX) of C-RAN deployment. We show for which population density and span of BBU Pool coverage usage of Microwave Radio (MWR) links is viable. For larger scale deployment we recommend to divide the area into multiple BBU Pools.
云无线接入网(C-RAN)是一种新的架构,旨在成为未来移动网络的候选网络。然而,只有在经济上可行的情况下才会部署。在本文中,我们研究了C-RAN部署的技术选择。通过使用分析方法,我们得出了最小化C-RAN部署资本支出(CAPEX)的工程指导方针。我们展示了微波无线电(MWR)链路的人口密度和BBU池覆盖范围是可行的。对于更大规模的部署,建议将区域划分为多个BBU pool。
{"title":"Optimizing Cloud-RAN deployments in real-life scenarios using Microwave Radio","authors":"Rami Al-obaidi, Aleksandra Checko, H. Holm, H. Christiansen","doi":"10.1109/EuCNC.2015.7194060","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194060","url":null,"abstract":"Cloud Radio Access Network (C-RAN) is a new architecture designed to be the candidate for enabling future mobile networks. However, it will be deployed only if it is economically viable. In this paper we investigate the technological options of C-RAN deployments. By using analytical methods we derive engineering guidelines for minimizing the CAPital EXpenditure (CAPEX) of C-RAN deployment. We show for which population density and span of BBU Pool coverage usage of Microwave Radio (MWR) links is viable. For larger scale deployment we recommend to divide the area into multiple BBU Pools.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125589768","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: 18
Capacity evaluation of Aerial LTE base-stations for public safety communications 用于公共安全通信的空中LTE基站容量评估
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194055
K. Gomez, A. Al-Hourani, L. Goratti, R. Riggio, K. Sithamparanathan, I. Bucaille
Aerial-Terrestrial communication networks able to provide rapidly-deployable and resilient communications capable of offering broadband connectivity are emerging as a suitable solution for public safety scenarios. During natural disasters or unexpected events, terrestrial infrastructure can be seriously damaged or disrupted due to physical destruction of network components, disruption in subsystem interconnections and/or network congestion. In this context, Aerial-Terrestrial communication networks are intended to provide temporal large coverage with the provision of broadband services at the disaster area. This paper studies the performance of Aerial UMTS Long Term Evolution (LTE) base stations in terms of coverage and capacity. Network model relies on appropriate channel model, LTE 3GPP specifications and well known schedulers are used. The results show the effect of the temperature, bandwidth, and scheduling discipline on the system capacity while at the same time coverage is investigated in different public safety scenarios.
能够提供快速部署和弹性通信,能够提供宽带连接的地空通信网络正在成为公共安全场景的合适解决方案。在自然灾害或突发事件中,由于网络组件的物理破坏、子系统互连中断和/或网络拥塞,地面基础设施可能受到严重破坏或中断。在这方面,空中-地面通信网旨在通过在灾区提供宽带服务来提供大范围的时间覆盖。本文从覆盖和容量两个方面研究了空中UMTS长期演进(LTE)基站的性能。网络模型依赖于适当的信道模型,使用LTE 3GPP规范和众所周知的调度程序。结果显示了温度、带宽和调度规则对系统容量的影响,同时研究了不同公共安全场景下的覆盖情况。
{"title":"Capacity evaluation of Aerial LTE base-stations for public safety communications","authors":"K. Gomez, A. Al-Hourani, L. Goratti, R. Riggio, K. Sithamparanathan, I. Bucaille","doi":"10.1109/EuCNC.2015.7194055","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194055","url":null,"abstract":"Aerial-Terrestrial communication networks able to provide rapidly-deployable and resilient communications capable of offering broadband connectivity are emerging as a suitable solution for public safety scenarios. During natural disasters or unexpected events, terrestrial infrastructure can be seriously damaged or disrupted due to physical destruction of network components, disruption in subsystem interconnections and/or network congestion. In this context, Aerial-Terrestrial communication networks are intended to provide temporal large coverage with the provision of broadband services at the disaster area. This paper studies the performance of Aerial UMTS Long Term Evolution (LTE) base stations in terms of coverage and capacity. Network model relies on appropriate channel model, LTE 3GPP specifications and well known schedulers are used. The results show the effect of the temperature, bandwidth, and scheduling discipline on the system capacity while at the same time coverage is investigated in different public safety scenarios.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123441185","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: 64
Base-station positioning for heterogeneous systems with coverage, capacity and cost criteria 具有覆盖、容量和成本标准的异构系统的基站定位
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194047
G. Athanasiadou, G. Tsoulos, D. Zarbouti
The problem of optimum base station positioning started with the deployment of the first cellular wireless systems, initially with coverage and traffic criteria. Nowadays, the increased demand for geographically inhomogeneous capacity leads to mixed cell structures as well as relay nodes, while the cost of the different deployments varies significantly. The characteristic of heterogeneous systems is that the optimum solution can be a small group of macrocells or a large number of microcells or anything in between. The algorithm presented in this paper has been developed for heterogeneous wireless systems, follows a combinatorial approach and the optimization analysis is based on coverage, capacity and cost criteria. Results demonstrate the flexible performance of the algorithm, as well as the tendency of the solutions towards the deployment of very small cells in order to satisfy the ever increasing capacity requirements.
最佳基站定位问题始于第一批蜂窝无线系统的部署,最初有覆盖范围和流量标准。如今,对地理不均匀容量的需求增加导致混合小区结构和中继节点,而不同部署的成本差异很大。异质系统的特点是最佳的解决方案可以是一小群大细胞或大量的微细胞或介于两者之间的任何东西。本文提出的算法是针对异构无线系统开发的,采用组合方法,并基于覆盖、容量和成本标准进行优化分析。结果证明了该算法的灵活性能,以及解决方案倾向于部署非常小的小区,以满足不断增长的容量需求。
{"title":"Base-station positioning for heterogeneous systems with coverage, capacity and cost criteria","authors":"G. Athanasiadou, G. Tsoulos, D. Zarbouti","doi":"10.1109/EuCNC.2015.7194047","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194047","url":null,"abstract":"The problem of optimum base station positioning started with the deployment of the first cellular wireless systems, initially with coverage and traffic criteria. Nowadays, the increased demand for geographically inhomogeneous capacity leads to mixed cell structures as well as relay nodes, while the cost of the different deployments varies significantly. The characteristic of heterogeneous systems is that the optimum solution can be a small group of macrocells or a large number of microcells or anything in between. The algorithm presented in this paper has been developed for heterogeneous wireless systems, follows a combinatorial approach and the optimization analysis is based on coverage, capacity and cost criteria. Results demonstrate the flexible performance of the algorithm, as well as the tendency of the solutions towards the deployment of very small cells in order to satisfy the ever increasing capacity requirements.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125047962","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: 1
Fast Controller Failover for Multi-domain Software-Defined Networks 多域软件定义网络的快速控制器故障切换
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194101
Yi-Chen Chan, Kuochen Wang, Yi-Huai Hsu
We propose a Fast Controller Failover for Multi-domain Software-Defined Networks (SDNs) (FCF-M) to handle SDN controller failures. The proposed FCF-M is composed of controller failure detection and switch reassignment. In the controller failure detection, each controller checks the timestamp of its preceding controller. If a controller is failed, its succeeding controller will check its preceding controller. Because a failed controller does not prevent its preceding controller from healthy check, the proposed FCF-M can prevent a single point of failure (SPOF) for healthy check. We also make use of an adaptive timeout delay to reduce failure detection time. In the switch reassignment, when a controller is failed, we need to reassign the switches under the failed controller to an alternative controller. We consider controller load and distance between a switch and a controller to choose an alternative controller for reducing delay. The proposed FCF-M can achieve intra-domain controller failover and inter-domain controller failover. Using EstiNet, simulation results show that the proposed FCF-M outperforms the Devolved controller (DC) in terms of average end-to-end delay and failover time.
我们提出了一个多域软件定义网络(SDN) (FCF-M)的快速控制器故障转移来处理SDN控制器故障。提出的FCF-M由控制器故障检测和开关重分配两部分组成。在控制器故障检测中,每个控制器都会检查前一个控制器的时间戳。如果一个控制器出现故障,下一个控制器将检查前一个控制器。由于发生故障的控制器不会阻止其前一个控制器进行健康检查,因此建议的FCF-M可以防止进行健康检查的单点故障(SPOF)。我们还利用自适应超时延迟来减少故障检测时间。在交换机重分配中,当控制器发生故障时,需要将故障控制器下的交换机重新分配给备用控制器。我们考虑控制器的负载和开关与控制器之间的距离来选择备选控制器以减少延迟。提出的FCF-M可以实现域内控制器故障切换和域间控制器故障切换。利用EstiNet进行的仿真结果表明,所提出的FCF-M在平均端到端延迟和故障转移时间方面优于下放控制器(DC)。
{"title":"Fast Controller Failover for Multi-domain Software-Defined Networks","authors":"Yi-Chen Chan, Kuochen Wang, Yi-Huai Hsu","doi":"10.1109/EuCNC.2015.7194101","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194101","url":null,"abstract":"We propose a Fast Controller Failover for Multi-domain Software-Defined Networks (SDNs) (FCF-M) to handle SDN controller failures. The proposed FCF-M is composed of controller failure detection and switch reassignment. In the controller failure detection, each controller checks the timestamp of its preceding controller. If a controller is failed, its succeeding controller will check its preceding controller. Because a failed controller does not prevent its preceding controller from healthy check, the proposed FCF-M can prevent a single point of failure (SPOF) for healthy check. We also make use of an adaptive timeout delay to reduce failure detection time. In the switch reassignment, when a controller is failed, we need to reassign the switches under the failed controller to an alternative controller. We consider controller load and distance between a switch and a controller to choose an alternative controller for reducing delay. The proposed FCF-M can achieve intra-domain controller failover and inter-domain controller failover. Using EstiNet, simulation results show that the proposed FCF-M outperforms the Devolved controller (DC) in terms of average end-to-end delay and failover time.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123228342","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: 22
Transmit power control and clear channel assessment in LAA networks LAA网络中的发射功率控制和清信道评估
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194070
Pengfei Xia, Zi Teng, Jun Wu
Unlicensed LTE system holds high potential to effectively offload data traffic/video traffic from the crowded LTE networks. Listen-before-talk is generally necessary for unlicensed LTE to coexist with existing transmissions in the unlicensed band (e.g. wireless LAN). This paper studies static and dynamic clear channel assessment, static and dynamic transmit power control in unlicensed LTE systems.
免授权LTE系统具有很大的潜力,可以有效地从拥挤的LTE网络中卸载数据流量/视频流量。要使未授权的LTE与未授权频带(例如无线局域网)中的现有传输共存,通常需要先听后说。本文研究了无牌LTE系统中静态和动态清晰信道评估、静态和动态发射功率控制。
{"title":"Transmit power control and clear channel assessment in LAA networks","authors":"Pengfei Xia, Zi Teng, Jun Wu","doi":"10.1109/EuCNC.2015.7194070","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194070","url":null,"abstract":"Unlicensed LTE system holds high potential to effectively offload data traffic/video traffic from the crowded LTE networks. Listen-before-talk is generally necessary for unlicensed LTE to coexist with existing transmissions in the unlicensed band (e.g. wireless LAN). This paper studies static and dynamic clear channel assessment, static and dynamic transmit power control in unlicensed LTE systems.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123480582","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: 2
λ-selection strategy in C+L band 1-Pbit/s (448 WDM/19-core/128 Gbit/s/channel) flex-grid space division multiplexed transmission C+L波段1-Pbit/s (448 WDM/19核/128 Gbit/s/信道)柔性网格空分复用传输中的λ选择策略
Pub Date : 2015-08-13 DOI: 10.1109/EuCNC.2015.7194091
R. Asif, F. Ye, T. Morioka
In this paper, an inter-core crosstalk based wavelength selection scheme has been proposed for flex-grid super-channels in space division multiplexed transmission. The two λ-selection strategies are categorized as: (a) aligned wavelength super-channels (Aλ-SCs), where all super-channels are placed at same λ in all the cores and (b) interleaved wavelength super-channels (Iλ-SCs), where all super-channels are placed at different λ in all the neighboring cores. It is depicted that system performance is improved for DP-16QAM channels in 1-Pbit/s (448 WDM/19 Core/128 Gbit/s/channel) 60 km fiber link, when Iλ-SCs scheme is implemented.
提出了一种基于核间串扰的柔性化网格超信道空分复用传输波长选择方案。这两种λ选择策略被分类为:(a)对齐波长超通道(a λ- scs),其中所有超通道在所有核心中都以相同的λ放置;(b)交错波长超通道(Iλ-SCs),其中所有超通道在所有相邻核心中都以不同的λ放置。在1-Pbit/s (448 WDM/19 Core/128 Gbit/s/channel) 60 km光纤链路中,采用i - λ- sc方案,DP-16QAM信道的系统性能得到了改善。
{"title":"λ-selection strategy in C+L band 1-Pbit/s (448 WDM/19-core/128 Gbit/s/channel) flex-grid space division multiplexed transmission","authors":"R. Asif, F. Ye, T. Morioka","doi":"10.1109/EuCNC.2015.7194091","DOIUrl":"https://doi.org/10.1109/EuCNC.2015.7194091","url":null,"abstract":"In this paper, an inter-core crosstalk based wavelength selection scheme has been proposed for flex-grid super-channels in space division multiplexed transmission. The two λ-selection strategies are categorized as: (a) aligned wavelength super-channels (Aλ-SCs), where all super-channels are placed at same λ in all the cores and (b) interleaved wavelength super-channels (Iλ-SCs), where all super-channels are placed at different λ in all the neighboring cores. It is depicted that system performance is improved for DP-16QAM channels in 1-Pbit/s (448 WDM/19 Core/128 Gbit/s/channel) 60 km fiber link, when Iλ-SCs scheme is implemented.","PeriodicalId":310313,"journal":{"name":"2015 European Conference on Networks and Communications (EuCNC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131328505","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
期刊
2015 European Conference on Networks and Communications (EuCNC)
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1