2019 Wireless Days (WD)最新文献_第2页

Toward Intelligent Reconfiguration of RPL Networks using Supervised Learning 基于监督学习的RPL网络智能重构研究

2019 Wireless Days (WD) Pub Date : 2019-04-24 DOI: 10.1109/WD.2019.8734236

Moussa Aboubakar, Mounir Kellil, A. Bouabdallah, P. Roux

{"title":"Toward Intelligent Reconfiguration of RPL Networks using Supervised Learning","authors":"Moussa Aboubakar, Mounir Kellil, A. Bouabdallah, P. Roux","doi":"10.1109/WD.2019.8734236","DOIUrl":"https://doi.org/10.1109/WD.2019.8734236","url":null,"abstract":"Designing scalable and energy-efficient routing protocols for IoT low power networks is a particularly challenging problem. The IETF ROLL Working Group has defined and standardized an IPv6 routing protocol for IoT low power networks called RPL (IPv6 Routing Protocol for Low-Power and Lossy Networks) [1]. This protocol builds and maintains dynamic routes among network devices based on various objective functions (OFs) that exploit different network metrics for parent node selection (e.g., ETX-based [2], Energy-based [3]), etc.). With such OFs, RPL organizes the network topology as a Destination Oriented Directed Acyclic Graph (DODAG). However, the performance of RPL may be affected by frequent network topology changes, which may be caused by different factors like node battery depletion, link quality degradation, etc. Indeed, in such situations, the OF functions do not guarantee optimal maintenance of the RPL tree. To address this issue, this paper describes how Supervised Learning can be leveraged to improve RPL performance and energy efficiency by mitigating RPL DODAG instability when the network conditions, used by the RPL’s OF functions, change frequently. We use an offline supervised learning to provide the optimal value of the transmission range (the maximal distance to which a node can send its data to another one) that mitigates the instability of the RPL network, and hence minimizes the energy consumption. The preliminary simulation results show that our proposal can improve network performance and increase network lifetime.","PeriodicalId":432101,"journal":{"name":"2019 Wireless Days (WD)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131010004","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: 9

TLTN – The local things network: on the design of a LoRaWAN gateway with autonomous servers for disconnected communities TLTN——本地事物网络:关于为断开连接的社区设计带有自治服务器的LoRaWAN网关

2019 Wireless Days (WD) Pub Date : 2019-04-24 DOI: 10.1109/WD.2019.8734239

Pape Abdoulaye Barro, M. Zennaro, E. Pietrosemoli

{"title":"TLTN – The local things network: on the design of a LoRaWAN gateway with autonomous servers for disconnected communities","authors":"Pape Abdoulaye Barro, M. Zennaro, E. Pietrosemoli","doi":"10.1109/WD.2019.8734239","DOIUrl":"https://doi.org/10.1109/WD.2019.8734239","url":null,"abstract":"IoT devices should be easy to deploy and able to endure long periods of activity in the field without further intervention. LoRaWAN is geared to attain these objectives. European developers can easily leverage the public gateways of The Things Networks (TTN) already installed to obtain connectivity for LoRaWAN end-devices. In many developing countries Internet access cannot be taken for granted thus precluding the use of TTN. In this paper, we present a solution that allows connecting local IoT end-nodes to a LoRaWAN gateway without the need of internet access, at low cost and with low power consumption. We implement the three building blocks of the LoRaWAN architecture (Gateway, Network Server and Application Server) in a single box based on a Raspberry Pi and a LoRaWAN module. Local access to the application data is offered via a WiFi Access Point, allowing community members to access their community data even when there is no Internet access. In addition to real time IoT data, bulletin board like services can be implemented in the local repository to provide educational, health and other content that addresses the most pressing needs of isolated communities. The complete box with mentioned capabilities constitutes then the Base Station (BS).","PeriodicalId":432101,"journal":{"name":"2019 Wireless Days (WD)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126793405","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: 17

Password-Based Authenticated Key Exchange Based on Signcryption for the Internet of Things 基于签名加密的物联网密码认证密钥交换

2019 Wireless Days (WD) Pub Date : 2019-04-24 DOI: 10.1109/WD.2019.8734196

Van-Hoan Hoang, E. Lehtihet, Y. Ghamri-Doudane

引用次数: 5

Optimal placement of drones for fast sensor energy replenishment using wireless power transfer 使用无线电力传输快速补充传感器能量的无人机的最佳位置

2019 Wireless Days (WD) Pub Date : 2019-04-24 DOI: 10.1109/WD.2019.8734203

C. Caillouet, Tahiry Razafindralambo, Dimitrios Zorbas

{"title":"Optimal placement of drones for fast sensor energy replenishment using wireless power transfer","authors":"C. Caillouet, Tahiry Razafindralambo, Dimitrios Zorbas","doi":"10.1109/WD.2019.8734203","DOIUrl":"https://doi.org/10.1109/WD.2019.8734203","url":null,"abstract":"Lifetime is the main issue of wireless sensors networks. Since the nodes are often placed in inaccessible places, the replacement of their battery is not an easy task. Moreover, the node maintenance is a costly and time consuming operation when the nodes are high in numbers. Energy harvesting technologies have recently been developed to replenish part or all of the required energy that allows a node to function. In this paper, we use dedicated chargers carried by drones that can fly over the network and transmit energy to the nodes using radio-frequency (RF) signals. We formulate and optimally solve the Optimal Drone Placement and Planning Problem (OD3P) by using a given number of flying drones, in order to efficiently recharge wireless sensor nodes. Unlike other works in the literature, we assume that the drones can trade altitude with coverage and recharge power, while each drone can move across different positions in the network to extend coverage. We present a linear program as well as a fast heuristic algorithm to meet the minimum energy demands of the nodes in the shortest possible amount of time. Our simulation results show the effectiveness of our approaches for network scenarios with up to 50 sensors and a 50 × 50m terrain size.","PeriodicalId":432101,"journal":{"name":"2019 Wireless Days (WD)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125292044","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: 9

Optimization of Slot Allocation in Hybrid VLC/RF Networks for Throughput Maximization 基于吞吐量最大化的VLC/RF混合网络槽位分配优化

2019 Wireless Days (WD) Pub Date : 2019-04-24 DOI: 10.1109/WD.2019.8734271

M. Amjad, H. K. Qureshi, Sobia Jangsher

引用次数: 2

What is the Cost of the Index Selector Task for OFDM with Index Modulation? 带索引调制的OFDM索引选择器任务的成本是多少?

2019 Wireless Days (WD) Pub Date : 2019-04-24 DOI: 10.1109/WD.2019.8734233

Saulo Queiroz, J. Vilela, E. Monteiro

{"title":"What is the Cost of the Index Selector Task for OFDM with Index Modulation?","authors":"Saulo Queiroz, J. Vilela, E. Monteiro","doi":"10.1109/WD.2019.8734233","DOIUrl":"https://doi.org/10.1109/WD.2019.8734233","url":null,"abstract":"Index Modulation (IM) is a technique that activate k out of n subcarriers of an OFDM symbol to transmit ${{p}_{1}}=leftlfloor {{log }_{2}}binom{n}{k} rightrfloor $ bits in symbol’s indexes. Since both the symbol’s spectrum width and transmission air-time duration remain the same, OFDM-IM outperforms OFDM’s Spectral Efficiency (SE) for larger values of $binom{n}{k}$. However, OFDM-IM requires an extra step called Index Selector (IxS) which takes Tα time units to map a given p1-bit input to its corresponding pattern of active subcarriers. This extra overhead virtually enlarges the symbol duration, which is not captured by the classic SE definition. To fulfill this gap, in this work we present the Spectro-Computational Efficiency (SCE) metric. SCE parameterizes either the absolute runtime of Tα on a reference hardware or its computational complexity Tα(n, k) as function of n and k. Based on SCE, we present theoretical case studies to identify the asymptotic bounds for Tα(n, k) across different choices of k. if Tα(n, n/2) is at most linear on n the resulting overhead is asymptotically negligible and IxS can handle an arbitrarily large OFDM symbol. Otherwise, OFDM-IM’s SCE tends to zero regardless of the hardware processor speed. Also, we situate the inflection-point values for OFDM-IM’s SCE between $binom{6}{3}$ and $binom{14}{7}$ in some practical case studies.","PeriodicalId":432101,"journal":{"name":"2019 Wireless Days (WD)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130047158","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

Characterizing the Indoor Industrial Channel at 3.5GHz for 5G 3.5GHz的5G室内工业信道特性

2019 Wireless Days (WD) Pub Date : 2019-04-24 DOI: 10.1109/WD.2019.8734160

E. I. Adegoke, R. Edwards, W. Whittow, A. Bindel

引用次数: 13

Will Blockchain Technology Become a Reality in Sensor Networks? 区块链技术会在传感器网络中成为现实吗?

2019 Wireless Days (WD) Pub Date : 2019-04-01 DOI: 10.1109/WD.2019.8734268

Jims Marchang, Gregg Ibbotson, Paul Wheway

引用次数: 11

Load- and Interference-Balance Hybrid Routing Protocol for Hybrid Wireless Mesh Network 混合无线网状网络负载与干扰平衡混合路由协议

2019 Wireless Days (WD) Pub Date : 2019-04-01 DOI: 10.1109/WD.2019.8734257

Y. Chai, Xiao-Jun Zeng

引用次数: 7

Energy Consumption Management for Dense Wi-Fi Networks 高密度Wi-Fi网络能耗管理

2019 Wireless Days (WD) Pub Date : 2019-04-01 DOI: 10.1109/WD.2019.8734187

Paulo Silva, Nuno T. Almeida, R. Campos

{"title":"Energy Consumption Management for Dense Wi-Fi Networks","authors":"Paulo Silva, Nuno T. Almeida, R. Campos","doi":"10.1109/WD.2019.8734187","DOIUrl":"https://doi.org/10.1109/WD.2019.8734187","url":null,"abstract":"Wi-Fi networks lack energy consumption management mechanisms. In particular, during nighttime periods, the energy waste may be significant, since all Access Points (APs) are kept switched on even though there is minimum or null traffic demand. The fact that more than 80% of all wireless traffic is originated or terminated indoor, and served by Wi-Fi, has led the scientific community to look into energy saving mechanisms for Wi-Fi networks. State of the art solutions address the problem by switching APs on and off based on manually inserted schedules or by analyzing real-time traffic demand. The first are vendor specific; the second may induce frequent station (STA) handoffs, which has an impact on network performance. The lack of implementability of solutions is also a shortcoming in most works.We propose an algorithm, named Energy Consumption Management Algorithm (ECMA), that learns the daytime and nighttime periods of the Wi-Fi network. ECMA was designed having in mind its implementability over legacy Wi-Fi equipment. At daytime, the radio interfaces of the AP (2.4 GHz and 5 GHz) are switched on and off automatically, according to the traffic demand. At nighttime, clusters of APs, covering the same area, are formed, leaving one AP always switched on for basic coverage and the redundant APs swichted off to maximize energy savings, while avoiding coverage and performance hampering. Simulation results show energy savings of up to 50% are possible using the ECMA algorithm.","PeriodicalId":432101,"journal":{"name":"2019 Wireless Days (WD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130865434","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: 3