2015 IEEE Online Conference on Green Communications (OnlineGreenComm)最新文献

Two-level opportunistic spectrum management for green 5G Radio Access Networks 绿色5G无线接入网的两级机会频谱管理

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-10 DOI: 10.1109/OnlineGreenCom.2015.7387383

Christian Vitale, Vincenzo Sciancalepore, A. Asadi, V. Mancuso

引用次数: 4

Energy efficient content delivery in service provider networks with content caching 具有内容缓存的服务提供商网络中的节能内容交付

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387374

Nadeem Abji, A. Tizghadam, A. Leon-Garcia

引用次数: 2

Energy efficiency in reliable optical core networks 可靠光核心网的能源效率

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387370

F. Musumeci, Ali Hmaity, M. Tornatore, A. Pattavina

{"title":"Energy efficiency in reliable optical core networks","authors":"F. Musumeci, Ali Hmaity, M. Tornatore, A. Pattavina","doi":"10.1109/OnlineGreenCom.2015.7387370","DOIUrl":"https://doi.org/10.1109/OnlineGreenCom.2015.7387370","url":null,"abstract":"The continuous growth of the Internet in the last decade has contributed to an unprecedented increase of the total amount of energy consumed by telecommunication networks worldwide. In this context, Wavelengths Division Multiplexed networks, besides providing benefits in terms of high transport capacity, have been recognized as an effective solution to achieve substantial power savings in core transport networks, which are the focus of our work. One critical issue for telecom operators is network resilience to failures. When provisioning network capacity, operators need to reserve additional (backup) resources, to be used in case of failures of currently used (i.e., working) resources. However, backup network resources do not need necessarily to be powered-on when not used. In fact some network services may have looser requirements in terms of connection recovery time, and they can be put into a low-power sleep (i.e., idle) state in order to save energy. Furthermore, according to the specific Quality of Service (QoS) to be guaranteed to the users, a different level of protection (i.e., dedicated/shared) or even no protection can be implemented for different demands, so energy consumption can be further reduced. In this paper, we provide an Integer Linear Program formulation for the power-minimized design of resilient optical core networks to investigate on the power saving obtained by enabling three power-reduction strategies: i) setting protection devices into low-power sleep state, ii) differentiating the level of protection provided to traffic demands according to their required QoS, and iii) adapting the devices (i.e. transmitting/receiving equipment) usage to a realistic hourly traffic variation profile. We find that up to 25% of power savings can be obtained in case of peak-hour traffic, while this advantage increases up to 63% during off-peak hours. Considering the energy consumption over a whole day, up to 44% of energy savings can be achieved.","PeriodicalId":171886,"journal":{"name":"2015 IEEE Online Conference on Green Communications (OnlineGreenComm)","volume":"344 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134160121","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

Out-of-band radiation: Opportunities for antenna-based RF energy harvesting in wireless devices? 带外辐射:无线设备中基于天线的射频能量收集的机会?

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387379

Sean Rocke

{"title":"Out-of-band radiation: Opportunities for antenna-based RF energy harvesting in wireless devices?","authors":"Sean Rocke","doi":"10.1109/OnlineGreenCom.2015.7387379","DOIUrl":"https://doi.org/10.1109/OnlineGreenCom.2015.7387379","url":null,"abstract":"In this paper opportunities for wireless devices to harvest out-of-band RF energy are explored. Emerging multi-standard wireless communications devices such as mobile handsets currently include multiple antennas and multiple transceiver systems. Typical device usage leverages a subset of available antenna and transceiver systems at any given time. Additionally, receiver chains in use typically filter out-of-band energies to improve communications system performance. These out-of-band energies can be collected in multi-antenna and single-antenna systems or simpler devices such as wireless sensor nodes. In this paper, opportunities for harvesting out-of-band energy are investigated. Investigations use both data collected from an extensive measurement campaign spanning 88-2686MHz across 4 mid-sized US cities as well as simulations to provide insights into the opportunities for RF energy harvesting. An architecture is proposed using a 3-port out-of-band RF harvester to enable opportunistic capture of ambient RF energy. The proposed approach is demonstrated via simulation using a planar inverted-F antenna with feed line coupled to a split ring resonator, for harvesting out-of-band energy. Results indicate that potentially significant proportions of ambient energy remain untapped and can be harvested using the proposed approach. This work provides valuable insight into the design space for harvesting out-of-band RF energy.","PeriodicalId":171886,"journal":{"name":"2015 IEEE Online Conference on Green Communications (OnlineGreenComm)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129139424","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

Electromagnetic emission-aware scheduling for the uplink of coordinated OFDM wireless systems 协调OFDM无线系统上行链路的电磁发射感知调度

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387377

Y. Sambo, F. Héliot, M. Imran

{"title":"Electromagnetic emission-aware scheduling for the uplink of coordinated OFDM wireless systems","authors":"Y. Sambo, F. Héliot, M. Imran","doi":"10.1109/OnlineGreenCom.2015.7387377","DOIUrl":"https://doi.org/10.1109/OnlineGreenCom.2015.7387377","url":null,"abstract":"The increasing demand for data and multimedia services, as well as the ubiquitous nature of the current generation of mobile devices have resulted in continuous network upgrades to support an ever-increasing number of users. However, given that wireless communication systems operate on radiofrequency waves, the health effects of electromagnetic (EM) emission from these systems are increasingly becoming a concern. In order to address these concerns, we propose in this paper, an EM emission reduction scheme for the uplink of OFDM wireless systems with base station coordination. We formulate the EM reduction scheme as a convex optimization problem and solve it by iteratively allocating bits to users on their respective subcarriers in each sector. This is based on the assumption that the scheduler can predict the channel state information of all the users for a given transmission window. Simulation results show that, with coordination, our proposed scheme reduces EM emission by over 85% and 99% when compared with a no frequency reuse scheme and an energy efficiency based scheme, respectively.","PeriodicalId":171886,"journal":{"name":"2015 IEEE Online Conference on Green Communications (OnlineGreenComm)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131855589","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: 12

Optimal EE-delay relation in wireless systems 无线系统中最优ee -延迟关系

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387376

Changyang She, Chenyang Yang

引用次数: 2

Improving energy efficiency of Ethernet switching with modular Cuckoo hashing 利用模块化布谷鸟哈希提高以太网交换的能源效率

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387371

P. Reviriego, S. Pontarelli, Gil Levy

{"title":"Improving energy efficiency of Ethernet switching with modular Cuckoo hashing","authors":"P. Reviriego, S. Pontarelli, Gil Levy","doi":"10.1109/OnlineGreenCom.2015.7387371","DOIUrl":"https://doi.org/10.1109/OnlineGreenCom.2015.7387371","url":null,"abstract":"In recent years, energy efficiency has become an important design goal for routers, switches and other networking equipment. Traditionally, the energy consumption of these devices has been almost constant regardless of the traffic load and the device configuration. In computer networks, traffic loads typically present large variations and in many cases the links operate most of the time at low/medium loads. Therefore significant energy savings can be obtained by making energy consumption proportional to the traffic load. The same applies to the switch configuration that determines the processing done to incoming packets. In most cases, the settings are far from the worst case. This means again that by adapting the power consumption to the configuration settings substantial savings can be achieved. The importance of configuration and packet processing is poised to grow with the adoption of Software Defined Networking. Therefore improving its energy efficiency is important. In this paper, a step is made in this direction by introducing modular Cuckoo hashing an implementation of Cuckoo hashing that adapts its energy consumption as a function of the number of entries. Cuckoo hashing is commonly used in networking equipment to implement packet matching against a set of stored entries. The proposed scheme varies the number of hash tables used as a function of the number of entries thus enabling to power down memories and save energy. Modular Cuckoo hashing is evaluated by simulation and the estimated benefits in terms of power consumption are reported. The results show how modular Cuckoo hashing can make the energy consumption adapt to the number of entries. The practical benefits are also illustrated with a case study of data center switches. This is just an example but makes a strong case to develop more general energy efficient packet processing functions that adapt their power consumption to the configuration settings.","PeriodicalId":171886,"journal":{"name":"2015 IEEE Online Conference on Green Communications (OnlineGreenComm)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127291170","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

Connectivity in IoT indoor lighting systems with visible light communications 具有可见光通信的物联网室内照明系统的连接

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387378

K. Warmerdam, A. Pandharipande, D. Caicedo

引用次数: 33

Lifetime-aware data collection in Wireless Sensor Networks 无线传感器网络中的寿命感知数据采集

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/OnlineGreenCom.2015.7387375

Jingjing Fei, Hui Wu, Wenguang Zheng, Yongxin Wang

引用次数: 1

Controlling Data Aggregation and communication periodicity in Energy Harvesting networks 能量收集网络中数据聚合和通信周期的控制

2015 IEEE Online Conference on Green Communications (OnlineGreenComm) Pub Date : 2015-11-01 DOI: 10.1109/ONLINEGREENCOM.2015.7387382

Andre Riker, E. Cerqueira, M. Curado, E. Monteiro

引用次数: 2