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Design and Analysis of Compact Triple Band Microstrip Patch Antenna for Multiband Applications 用于多波段应用的紧凑型三带微带贴片天线的设计与分析
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2018-03-22 DOI: 10.4108/eai.22-3-2018.154383
Z. Ullah, M. I. Khattak, Ejazul Haq, Sheeraz Ahmed, A. Khattak
{"title":"Design and Analysis of Compact Triple Band Microstrip Patch Antenna for Multiband Applications","authors":"Z. Ullah, M. I. Khattak, Ejazul Haq, Sheeraz Ahmed, A. Khattak","doi":"10.4108/eai.22-3-2018.154383","DOIUrl":"https://doi.org/10.4108/eai.22-3-2018.154383","url":null,"abstract":"In this article, a novel design of multiband microstrip patch antenna has been presented for multiband applications. The Shirt shape antenna is designed on FR-4 substrate and is fed through 50 ohm microstrip feed line. Two l-shape slots are introduced in antenna for size reduction and to provide multiband characteristics while DGS (defected ground structure) is used to achieve bandwidth enhancement. The simulated results show that the antenna operates in three different frequency bands having resonance frequencies at 4.4GHz, 6.2GHz and 8.5GHz. The antenna exhibits good return loss of -21.1dB @4.4Ghz, -15dB @6.2GHz and -30.5dB @8.5GHz. The proposed antenna has stable radiation patterns and gain values which are 5.3db at 4.4GHz, 5.03dB at 6.2GHz, 5.27 at 8.5GHz. The VSWR is also less than 2 and has good efficiency values at the operating bands 62%, 89% and 93% respectively. The Shirt shape antenna finds its applications in commercial WLAN, Wi-MAX and in Radar application.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126908200","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
MAC Protocol Operation in Energy Harvesting for 5G Networks 5G网络能量采集中的MAC协议操作
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2018-01-10 DOI: 10.4108/eai.10-1-2018.153554
Joydev Ghosh, Z. Jakó
{"title":"MAC Protocol Operation in Energy Harvesting for 5G Networks","authors":"Joydev Ghosh, Z. Jakó","doi":"10.4108/eai.10-1-2018.153554","DOIUrl":"https://doi.org/10.4108/eai.10-1-2018.153554","url":null,"abstract":"Two vital challenges arise in the next generation 5G networks: scarcity of spectrum and the aspect of energy efficiency (EE). In this letter, we first formulate the prime issue, i.e., energy harvesting (EV) for 5G wireless networks, in which spectrum and energy resources are efficiently received and resourcefully managed. Thereafter, we introduce a medium access control (MAC) scheme for dual tier 5G networks; it also invokes the simultaneous wireless information and power transfer (SWIPT) technique with other data transmission schemes, i.e., cooperative transmission (CT) scheme and non-cooperative transmission (NCT) scheme with EV abilities. Illustrative results demonstrate significant improvement in aggregated throughput and EE.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115144286","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
Rank Average for handover decision making in heterogeneous wireless networks 异构无线网络切换决策的秩平均算法
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2018-01-10 DOI: 10.4108/eai.10-1-2018.153555
Saida Driouache, N. Naja, A. Jamali
{"title":"Rank Average for handover decision making in heterogeneous wireless networks","authors":"Saida Driouache, N. Naja, A. Jamali","doi":"10.4108/eai.10-1-2018.153555","DOIUrl":"https://doi.org/10.4108/eai.10-1-2018.153555","url":null,"abstract":"Vertical handover mechanism is an important issue in heterogeneous wireless networks. Continuity of service during handover and QoS are relevant issues to deal with. This paper focuses on vertical handover decision making. It proposes a Rank Average method for the best access network selection. This method is an aggregation of two Multi Attributes Decision Making (MADM) methods: Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) and VIse Kriterijumska Optimizacija kompromisno Resenja (VIKOR), together with Shannon entropy-based weights. Entropy is an adequate tool to weigh up the handover criteria in a quiet easy and straightforward way. Rank Average outperforms TOPSIS and VIKOR in terms of throughput, end to end delay, packet loss, and significantly reduces the number of unnecessary handovers related to the ping-pong effects. Performance results are obtained within the scope of MIH through NS3 simulator.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128277982","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
High Capacity Ethernet Radio Relay Networks in Mobile Communications 移动通信中的高容量以太网无线电中继网络
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2018-01-10 DOI: 10.4108/eai.10-1-2018.153553
Madalina Oproiu, Alexandru Vulpe, O. Fratu, I. Marghescu
{"title":"High Capacity Ethernet Radio Relay Networks in Mobile Communications","authors":"Madalina Oproiu, Alexandru Vulpe, O. Fratu, I. Marghescu","doi":"10.4108/eai.10-1-2018.153553","DOIUrl":"https://doi.org/10.4108/eai.10-1-2018.153553","url":null,"abstract":"The present paper studies the main characteristics of digital radio relays used by the largest mobile network operator (MNO) in Romania in order to develop a network supporting the newest technologies available on the market. The main contribution is the design of a high capacity Ethernet radio relay network in an area around Bucharest, Romania. The location was chosen on the criterion that it is a high-density traffic area where high-capacity radio links are in operation and use the newest digital radio relay features that are explained in this paper: high modulation scheme, adaptive radio modulation, radio traffic aggregation and cross-polarization interference cancellation. The network contains PDH and SDH links to transport the entire traffic in the area. We analyse several links between different sites that present particularities in the mobile operator's network. Finally, the most suitable parameters are chosen and the designed radio relay network is presented and analysed. It has been implemented in the MNO's network since 2015.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125246947","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
Africa: cyber-security and its mutual impacts with computerisation, miniaturisation and location-based authentication 非洲:网络安全及其与计算机化、小型化和基于位置的认证的相互影响
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2017-09-13 DOI: 10.4108/eai.13-9-2017.153339
Muhammad Adeka, K. Anoh, M. Ngala, S. Shepherd, E. Ibrahim, I. Elfergani, A. S. Hussaini, Jonathan Rodriguez, R. Abd‐Alhameed
{"title":"Africa: cyber-security and its mutual impacts with computerisation, miniaturisation and location-based authentication","authors":"Muhammad Adeka, K. Anoh, M. Ngala, S. Shepherd, E. Ibrahim, I. Elfergani, A. S. Hussaini, Jonathan Rodriguez, R. Abd‐Alhameed","doi":"10.4108/eai.13-9-2017.153339","DOIUrl":"https://doi.org/10.4108/eai.13-9-2017.153339","url":null,"abstract":"The state of insecurity occasioned by fraudulent practices in Africa has been of concern economically, both at home and abroad. In this paper, we propose ways to mitigate this problem, using Nigeria as a case study. Based on surveys in West Africa, the paper examines the security situation in the continent and its mutual impacts with computerisation, miniaturisation and Location-Based Authentication (LBA). It was discovered that computerisation and miniaturisation had negative effects on cyber-security, as these were being exploited by fraudsters, using advance fee fraud; called 419. As a countermeasure, the paper examines the possibility of using LBA and digitisation of the GSM Mobile country codes down to city/area codes along with GSM/GPS authentications. These could also be combined with the use of a web-based Secret Sharing Scheme for services with very high security demands. The challenges of roaming were also examined and considered to be of negligible impact.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"177 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126745289","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
An Actor-Based Middleware for Crowd-Sourced Services 面向众包服务的基于参与者的中间件
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2017-09-13 DOI: 10.4108/eai.13-9-2017.153070
Ahmed Abdel Moamen, Nadeem Jamali
{"title":"An Actor-Based Middleware for Crowd-Sourced Services","authors":"Ahmed Abdel Moamen, Nadeem Jamali","doi":"10.4108/eai.13-9-2017.153070","DOIUrl":"https://doi.org/10.4108/eai.13-9-2017.153070","url":null,"abstract":"The growing ubiquity and variety of personal connected computational devices – each with a number of sensors – has created the opportunity for a wide range of crowd-sourced services. A busy professional could find a restaurant to go to for a quick lunch based on information available from smartphones of other people already there. Sensors on diners’ smartphones could detect whether their owners are eating, waiting to be seated, or even heading to a restaurant. Although the programming required for offering a new service of this sort is significant if done from scratch, we identify core communication mechanisms underlying such services, and implement them as part of a middleware, CSSWare. Service designers can then launch novel services over CSSWare by plugging in small pieces of service-specific code. This paper describes the multi-origin communication mechanism which we believe to underlie many crowdsourced services. It presents our design and prototype Actor-based implementation of CSSWare, a middleware for crowd-sourced services. We present source code for two realistic crowd-sourced services to illustrate the ease with which new services can be specified and launched. Finally, we present our experimental results demonstrating scalability, performance and data-contributor side energy efficiency of the approach. Received on 21 December 2016; accepted on 06 July 2017; published on 13 September 2017","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114562698","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
Video-on-demand QoE Evaluation Across Different Age- Groups and Its Significance for Network Capacity 不同年龄段视频点播QoE评价及其对网络容量的意义
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2017-04-01 DOI: 10.4108/eai.10-1-2018.153557
M. Roshan, J. Schormans, R. Ogilvie
{"title":"Video-on-demand QoE Evaluation Across Different Age- Groups and Its Significance for Network Capacity","authors":"M. Roshan, J. Schormans, R. Ogilvie","doi":"10.4108/eai.10-1-2018.153557","DOIUrl":"https://doi.org/10.4108/eai.10-1-2018.153557","url":null,"abstract":"Quality of Experience (QoE) drives churn in the broadband networks industry, and good QoE plays a large part in the retention of customers. QoE is known to be affected by the Quality of Service (QoS) factors packet loss probability (PLP), delay and delay jitter caused by the network. Earlier results have shown that the relationship between these QoS factors and QoE is non-linear, and may vary from application to application. We use the network emulator Netem as the basis for experimentation, and evaluate how QoE varies as we change the emulated QoS metrics. Focusing on Video-on-Demand, we discovered that the reported QoE may differ widely for users of different age groups, and that the most demanding age group (the youngest) can require an order of magnitude lower PLP to achieve the same QoE than is required by the most widely studied age group of users. We then used a bottleneck TCP model to evaluate the capacity cost of achieving an order of magnitude decrease in PLP, and found it be (almost always) a 3-fold increase in link capacity that was required. Keywords—Quality of experience, quality of service, packet loss probability, network capacity.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126290459","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
Interference Assessment for the Spectrum Sharing between IMT-2020 and Inter-Satellite Service IMT-2020与星间业务频谱共享的干扰评估
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2017-03-27 DOI: 10.4108/eai.10-1-2018.153556
Bo Li, Weidong Wang, Yinghai Zhang, Chaowei Wang, Shuaijun Liu, Zhaojun Qian
{"title":"Interference Assessment for the Spectrum Sharing between IMT-2020 and Inter-Satellite Service","authors":"Bo Li, Weidong Wang, Yinghai Zhang, Chaowei Wang, Shuaijun Liu, Zhaojun Qian","doi":"10.4108/eai.10-1-2018.153556","DOIUrl":"https://doi.org/10.4108/eai.10-1-2018.153556","url":null,"abstract":"This paper analyzes interference coexistence of IMT-2020 (International Mobile Telecommunications-2020) and inter-satellite service where both systems operate in the same spectrum band of 25.25–27.5 GHz. This work can be regarded as a good reference to the research community, industry and regulators which are currently investigating spectrum requirements and technology options for 5G system. Considering the interference scenario between the return inter-orbit link of data relay satellite system and downlink of IMT-2020, we adopt realistic system parameters and radiation pattern, combined with very recent channel from the literature. Simulation results indicate that the interference from IMT-2020 downlink to Data Relay Satellite (DRS) is above the interference level while the LEO spacecraft cause acceptable interference to IMT-2020 downlink.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117266177","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
F-ETX: a predictive link state estimator for mobile networks F-ETX:移动网络的预测链路状态估计器
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2016-06-20 DOI: 10.4108/eai.20-6-2016.151517
S. Bindel, S. Chaumette, B. Hilt
{"title":"F-ETX: a predictive link state estimator for mobile networks","authors":"S. Bindel, S. Chaumette, B. Hilt","doi":"10.4108/eai.20-6-2016.151517","DOIUrl":"https://doi.org/10.4108/eai.20-6-2016.151517","url":null,"abstract":"Due to their inherent features, Mobile Ad Hoc Networks have proven their efficiency to exchange data between mobile nodes. The main issue in this type of a network is the delivery of data to a destination. Unfortunately, the mobility of nodes and the disturbances of the propagation channel lead to the increase of the loss rate, which undermines routing performances. To address this issue, routing protocols use link quality estimators as a metric. However, current estimators have been designed for static wireless sensor networks and are not suitable in case of mobility. In order to overcome this issue, a novel metric called Fast ETX is suggested, which gives a reliable and accurate link quality assessment. It is setup by four estimators which assess and predict the link state. In addition, we design a framework to integrate this multi-estimator metric into a routing protocol.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114842381","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
History-based MAC Protocol for Low Duty-Cycle Wireless Sensor Networks: the SLACK-MAC Protocol 基于历史的低占空比无线传感器网络MAC协议:SLACK-MAC协议
EAI Endorsed Trans. Mob. Commun. Appl. Pub Date : 2016-06-20 DOI: 10.4108/eai.20-6-2016.151516
Affoua Thérèse Aby, A. Guitton, P. Lafourcade, M. Misson
{"title":"History-based MAC Protocol for Low Duty-Cycle Wireless Sensor Networks: the SLACK-MAC Protocol","authors":"Affoua Thérèse Aby, A. Guitton, P. Lafourcade, M. Misson","doi":"10.4108/eai.20-6-2016.151516","DOIUrl":"https://doi.org/10.4108/eai.20-6-2016.151516","url":null,"abstract":"Wireless sensor networks (WSNs) are increasingly used in environmental monitoring applications. They are designed to operate for several months by featuring low activity cycles in order to save energy. In this paper, we propose a Medium Access Control (MAC) protocol for such WSNs with very low duty-cycles of 1% and less. Nodes are activated randomly and use a history of previous successful frame exchanges to decide their next activation time. We study the choice of the history size, and we compare the performance of our protocol with other protocols from the literature. We show by simulations and real experiments that with a limited history size of only six entries, our protocol achieves better performance than other protocols from the literature, while keeping the advantages of fully asynchronous protocols.","PeriodicalId":299985,"journal":{"name":"EAI Endorsed Trans. Mob. Commun. Appl.","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128944906","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
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