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Dynamic DRX algorithms for reduced energy consumption and delay in LTE networks 动态DRX算法在LTE网络中降低能耗和延迟
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020799
R. SyamaVarma, K. Sivalingam, Li-Ping Tung, Ying-Dar Lin
{"title":"Dynamic DRX algorithms for reduced energy consumption and delay in LTE networks","authors":"R. SyamaVarma, K. Sivalingam, Li-Ping Tung, Ying-Dar Lin","doi":"10.1109/WD.2014.7020799","DOIUrl":"https://doi.org/10.1109/WD.2014.7020799","url":null,"abstract":"The Long Term Evolution (LTE) standard specifies the Discontinuous Reception Mechanism (DRX) mechanism for saving power at the User Equipment (UE). Here, a UE switches off its RF circuitry when there are no packets to be transmitted or received. The existing DRX algorithms use static operational parameters that are determined by the evolved nodeB (eNB) at the start of a UE's session. During the switch-off period, packets destined to the UE are buffered in the eNB leading to higher packet latency. This paper presents two adaptive algorithms to dynamically adjust the DRX parameters, in order to reduce both energy consumption and the extra delay incurred. The algorithms use application Quality-of-Service (QoS) and Channel Quality Information (CQI) to adjust the DRX parameters. Performance studies based on ns3 simulator show that the algorithms are able to reduce packet delay compared to static DRX by up to 60%, 60% and 75% and reduce energy consumption by up to 75%, 43% and 90% for video streaming, VoIP and bursty data applications respectively.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115990417","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: 10
Applying wireless sensor networks to renaturation monitoring: From requirements to deployment 将无线传感器网络应用于再生监测:从需求到部署
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020825
Hannes Menzel, R. Karnapke, Steffen Büchner, J. Nolte
{"title":"Applying wireless sensor networks to renaturation monitoring: From requirements to deployment","authors":"Hannes Menzel, R. Karnapke, Steffen Büchner, J. Nolte","doi":"10.1109/WD.2014.7020825","DOIUrl":"https://doi.org/10.1109/WD.2014.7020825","url":null,"abstract":"In Germany, renaturation of former coal mining regions is an important topic. One of these regions, called Chicken Creek, is used by ecologists to observe the development of an initial ecosystem without human interference - a scenario that seems perfect for a wireless sensor network. However, the sensor network applications are still mostly designed from scratch for every new scenario. The reason for this are strongly differing user requirements. This time-consuming problem can be overcome by providing a reusable module pool from which hard- and software components can be chosen. Based upon this module pool, a semi-automatic generation of sensor network applications becomes possible. In this paper we focus on the differences between the aforesaid theory and the practice during the initial deployment.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115150317","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
Optimal sinks deployment and packet scheduling for Wireless Sensor Networks 无线传感器网络的最优汇聚部署和分组调度
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020827
N. Achir, P. Mühlethaler
{"title":"Optimal sinks deployment and packet scheduling for Wireless Sensor Networks","authors":"N. Achir, P. Mühlethaler","doi":"10.1109/WD.2014.7020827","DOIUrl":"https://doi.org/10.1109/WD.2014.7020827","url":null,"abstract":"In this paper we propose an optimal deployment and distributed packet scheduling of multi-sink Wireless Sensors networks (WNSs). This work is devoted to computing the optimal deployment of sinks for a given maximum number of hops between nodes and sinks. We also propose an optimal distributed packet scheduling in order to estimate the minimum energy consumption. We consider the energy consumed due to reporting, forwarding and overhearing. In contrast to reporting and forwarding, the energy used in overhearing is difficult to estimate because it is dependent on the packet scheduling. In this case, we determine the lower-bound of overhearing, based on an optimal distributed packet scheduling formulation. We also propose another estimation of the lower-bound in order to simulate non interfering parallel transmissions which is more tractable in large networks. We note that overhearing largely predominates in energy consumption. A large part of the optimizations and computations carried out in this paper are obtained using ILP formalization.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126139569","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
Interference analysis in cooperative multi-hop networks subject to multiple flows 多流协同多跳网络的干扰分析
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020823
Quratulain Shafi, Syed Ali Hassan
{"title":"Interference analysis in cooperative multi-hop networks subject to multiple flows","authors":"Quratulain Shafi, Syed Ali Hassan","doi":"10.1109/WD.2014.7020823","DOIUrl":"https://doi.org/10.1109/WD.2014.7020823","url":null,"abstract":"This paper studies the effects of allowing multiple packets to flow simultaneously in a cooperative multi-hop transmission system. Although, the packet delivery rate may increase with multiple packet flows, however, the desired signals of one packet may get interfered with the signals of the other packets in the network, thereby causing some of the packets to die off. This phenomenon is analyzed by modeling the multi-hop transmission as a conditional Markov process, followed by the derivation of its transition matrix. The resulting distribution is used to calculate the outage probability of a node in a cooperative environment in the presence of desired as well as interfering signals. The model is then used to obtain the network coverage, until which a packet can travel for a given packet delivery ratio constraint. Numerical simulations are performed to validate the analytical models.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115267672","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: 8
Imperfect timing synchronization in multi-hop cooperative networks: Statistical modeling and performance analysis 多跳合作网络中的不完全定时同步:统计建模与性能分析
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020838
Muddassar Hussain, Syed Ali Hassan
{"title":"Imperfect timing synchronization in multi-hop cooperative networks: Statistical modeling and performance analysis","authors":"Muddassar Hussain, Syed Ali Hassan","doi":"10.1109/WD.2014.7020838","DOIUrl":"https://doi.org/10.1109/WD.2014.7020838","url":null,"abstract":"This paper studies a multi-hop cooperative network operating under imperfect timing synchronization. The timing errors at the receiving nodes are statistically modeled and the effects on the signal-to-noise ratio (SNR) are derived. The distribution of SNR is then used to find the outage probability of the nodes in a hop which together with a Markov model provides the probability of making a successful hop. The results show that the timing synchronization errors reduce the one-hop success probability and the coverage of the network.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127591486","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
A scheme for using closest rendezvous points and Mobile Elements for data gathering in wireless sensor networks 一种在无线传感器网络中使用最近会合点和移动元件进行数据收集的方案
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020793
Abdullah Alomari, N. Aslam, W. Phillips, Frank Comeau
{"title":"A scheme for using closest rendezvous points and Mobile Elements for data gathering in wireless sensor networks","authors":"Abdullah Alomari, N. Aslam, W. Phillips, Frank Comeau","doi":"10.1109/WD.2014.7020793","DOIUrl":"https://doi.org/10.1109/WD.2014.7020793","url":null,"abstract":"A variety of wireless sensor network (WSN) applications have been proposed. However, the efficiency of WSNs, as well as their ability to interact with different environments, varies. Many challenges and problems to be solved remain. Overcoming these challenges requires a protocol that will design and provide a highly efficient system, thus helping the WSN to transmit data in a suitable time. In WSNs with Mobile Elements (MEs), the task is first to find an effective way to minimize the length of the tour that the ME follows for data gathering. However, the minimized tour length should still offer access to all nodes in the networks for data collection form the sensor nodes. In this paper, we propose a protocol that results in a shorter ME tour length than previously proposed protocols, using closest rendezvous points (CRPs) distributed throughout the network. Furthermore, this proposed protocol offers access to all nodes inside the network for the exchange of data with the MEs, as facilitated by the suggested CRP algorithm. One or more nodes can be represented by a single CRP that provides connectivity to all of the nodes within its wireless range. In cases where a greater number of MEs are used, less time is required to traverse the network for data gathering. This research demonstrates that the tour time can be reduced significantly by using more than one ME.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130358135","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: 10
Comparative performance study of LTE uplink schedulers for M2M communication M2M通信中LTE上行调度器的性能比较研究
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020853
A. M. Maia, Dario Vieira, M. D. Castro, Y. Ghamri-Doudane
{"title":"Comparative performance study of LTE uplink schedulers for M2M communication","authors":"A. M. Maia, Dario Vieira, M. D. Castro, Y. Ghamri-Doudane","doi":"10.1109/WD.2014.7020853","DOIUrl":"https://doi.org/10.1109/WD.2014.7020853","url":null,"abstract":"The Long Term Evolution (LTE) standard is one of the most promising technologies of wireless network for the development of Machine-to-Machine (M2M) communication because of its high data rates, low latency, high flexibility and low cost. However, improvements are needed in the network to support the uplink-heavy traffic generated by M2M communication and also to ensure the diversity of service requirements of this communication. The uplink packet scheduler is included in the necessary improvements. In this article, we evaluate the performance of the main schedulers for M2M communication regarding the aspects of service requirements, fairness, energy efficiency and impact on the system performance of current LTE traffic.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126500600","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
Experimental protocols and testbed for radio link quality evaluation over the freshwater 淡水无线链路质量评价的实验方案和试验台
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020849
Honoré Bizagwira, Joël Toussaint, M. Misson
{"title":"Experimental protocols and testbed for radio link quality evaluation over the freshwater","authors":"Honoré Bizagwira, Joël Toussaint, M. Misson","doi":"10.1109/WD.2014.7020849","DOIUrl":"https://doi.org/10.1109/WD.2014.7020849","url":null,"abstract":"Estimating a radio link quality for WSNs “Wireless Sensor Networks” becomes a big challenge when these networks are deployed in harsh or hostile environment. The quality of a radio link is a useful information for higher layer protocols as it has an impact on the network performance. The harsh or hostile outdoor conditions have a strong impact on signal propagation and make communication difficult or unreliable. Hence, deploying a wireless sensor network in such an environment requires a full knowledge of radio channel characteristics provided by the hardware designed to tackle the deployment. This paper describes a novel experimental testbed platform and a method to estimate the radio link quality and to determine WSN deployment parameters by using nodes shaped to the monitored site. The objective is to design a platform, independent from the environment, that can be used to estimate the radio link quality independently from the deployment context. This SDR “software defined radio” based solution will be used in this paper to estimate the parameters of an overwater radio link.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133910437","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
Networking-computing resource allocation for hard real-time Green Cloud applications 网络-硬实时绿色云应用的计算资源分配
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020844
N. Cordeschi, Danilo Amendola, F. Rango, E. Baccarelli
{"title":"Networking-computing resource allocation for hard real-time Green Cloud applications","authors":"N. Cordeschi, Danilo Amendola, F. Rango, E. Baccarelli","doi":"10.1109/WD.2014.7020844","DOIUrl":"https://doi.org/10.1109/WD.2014.7020844","url":null,"abstract":"Performing real-time applications on top of virtualized cloud systems requires that the overall per-job delay due to the in-cloud processing is upper bounded in a hard way. This opens the question about the optimal dynamic joint allocation of both computing and networking resources hosted in the Cloud. This is the focus of this contribution, where we develop in closed-form the optimal fully scalable energy-saving scheduler for the joint allocation of the task sizes, communication rates and processing rates in delay-constrained Clouds composed by multiple frequency-scalable parallel Virtual Machines (VMs).","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134633250","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
Analysis of multichannel wireless networks With priority-based polling MAC protocols 基于优先级轮询MAC协议的多通道无线网络分析
2014 IFIP Wireless Days (WD) Pub Date : 2014-11-01 DOI: 10.1109/WD.2014.7020807
L. D. Moraes, R. S. Silva
{"title":"Analysis of multichannel wireless networks With priority-based polling MAC protocols","authors":"L. D. Moraes, R. S. Silva","doi":"10.1109/WD.2014.7020807","DOIUrl":"https://doi.org/10.1109/WD.2014.7020807","url":null,"abstract":"This paper presents an analytic approach for the modeling, analysis and performance evaluation of multichannel wireless networks using priority-based polling multiple access protocol. The multichannel operation is modeled by a multiserver polling system, where the order in which stations are polled can be accomplished either under regular cycles or at random. The number of messages transmitted per visit at each polled station is defined by using a gated + L-limited rule. The analytic model also accounts for multiple priority classes, that can be assigned to determine the order in which messages (within each visited station) are selected for transmission. Multi-channel operation is modeled by using an heuristic approximation for an M/G/K system, and the scenario also accounts for a classic Head-Of-Line (HOL) policy to support priority-based services. In addition, a terminal's random-choice component, implying a random polling policy, is added to approximate an Ad Hoc network. Numerical and simulation results indicate coherence of the models proposed under asymptotic and regular conditions.","PeriodicalId":311349,"journal":{"name":"2014 IFIP Wireless Days (WD)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114250020","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
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