世界中学生文摘Pub Date : 2019-10-04DOI: 10.1145/3349621.3355725
Murtadha M. N. Aldeer, Ahmed Al Hilli, R. Howard, R. Martin
{"title":"Lifetime Optimization of Transmit-Only Sensor Networks with Adaptive Mobile Cluster Heads","authors":"Murtadha M. N. Aldeer, Ahmed Al Hilli, R. Howard, R. Martin","doi":"10.1145/3349621.3355725","DOIUrl":"https://doi.org/10.1145/3349621.3355725","url":null,"abstract":"In this paper, we propose a mathematical model that aims at prolonging the lifetime of sensor networks via an adaptive cluster head placement technique. We consider Transmit-Only (TO) sensor networks, where each group of sensor nodes directly communicate with their cluster head (CH) to report their sensed events. Our model makes use of the residual energy levels in the TO nodes and adapts the CH location accordingly such that it minimizes the energy consumption of the nodes with lowest residual energy. Using simulations, we show our approach can achieve up to a 50% improvement in lifetime compared to the static approach.","PeriodicalId":62224,"journal":{"name":"世界中学生文摘","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77532847","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}
世界中学生文摘Pub Date : 2019-10-04DOI: 10.1145/3349621.3355727
Konstantinos Kousias, G. Caso, Özgü Alay, Filip Lemic
{"title":"Empirical Analysis of LoRaWAN Adaptive Data Rate for Mobile Internet of Things Applications","authors":"Konstantinos Kousias, G. Caso, Özgü Alay, Filip Lemic","doi":"10.1145/3349621.3355727","DOIUrl":"https://doi.org/10.1145/3349621.3355727","url":null,"abstract":"Built on top of the Long Range (LoRa) physical layer, the LoRa Wide-Area Network (LoRaWAN) protocol has recently emerged as one of the most promising Low-Power Wide-Area Network (LPWAN) technologies, for several Internet of Things (IoT) applications. LoRaWAN introduces the Adaptive Data Rate (ADR) mechanism, aiming to deliver a fair compromise between network performance and system reliability. ADR performs adaptive tuning of communication parameters, e.g., the Spreading Factor (SF), which is used to modulate the transmitted signals. Although the performance of ADR has been explored in conjunction with stationary End-Devices (EDs), little is known about its suitability for mobile IoT applications. In this paper, we investigate the performance of ADR in diverse mobility scenarios by leveraging a large amount of LoRaWAN experimental traces, collected in the urban area of Antwerp, Belgium. Using a data-driven statistical approach, we show that, whilst ADR enhances network reliability and coverage in low mobility settings, its beneficial effects decrease as mobility increases, hence calling for possible improvement and optimization.","PeriodicalId":62224,"journal":{"name":"世界中学生文摘","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88381145","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}
世界中学生文摘Pub Date : 2019-10-04DOI: 10.1145/3349621.3355726
Cise Midoglu, Özgü Alay, C. Griwodz
{"title":"Evaluation Framework for Real-Time Adaptive 360-Degree Video Streaming over 5G Networks","authors":"Cise Midoglu, Özgü Alay, C. Griwodz","doi":"10.1145/3349621.3355726","DOIUrl":"https://doi.org/10.1145/3349621.3355726","url":null,"abstract":"The end-to-end distribution of real-time 360-degree video needs to be evaluated in a wholesome manner, considering all aspects from video capture to encoding, delivery, and playback, as well as timely and appropriate analytics, with a focus on end-user Quality of Experience (QoE). This requires a measurement framework which allows for the collection of metrics from multiple dimensions at the same time. In this work, we propose such a framework for evaluating real-time adaptive 360degree video streaming over an experimental Fifth Generation (5G) network, which allows for the investigation of different aspects of the end-to-end video delivery chain.","PeriodicalId":62224,"journal":{"name":"世界中学生文摘","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83691564","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}
世界中学生文摘Pub Date : 2019-10-04DOI: 10.1145/3349621.3355733
Xiao Zhu, Yuqi Jin, Feng Qian, Z. Morley Mao
{"title":"Poster: Experimental Evaluation of TCP Congestion Control over 60GHz WLAN","authors":"Xiao Zhu, Yuqi Jin, Feng Qian, Z. Morley Mao","doi":"10.1145/3349621.3355733","DOIUrl":"https://doi.org/10.1145/3349621.3355733","url":null,"abstract":"The multi-Gbps bandwidth offered by 60GHz millimeter-wave (mmWave) links has enabled a wide range of applications such as untethered virtual reality, fast file synchronization, and uncompressed video streaming. To provide these applications with high network utilization while preventing overload, TCP congestion control (CC) determines the data sending rate to achieve high throughput and/or low delay. CC over highly fluctuating 60GHz networks is extremely challenging -- the high directionality and small wavelength of mmWave make it vulnerable to mobility and blockage. Despite numerous studies on CC in WiFi/LTE, CC in 60GHz remains underexplored. To the best of our knowledge, the only related work on CC in mmWave is~citezhang2016transport. However, it's simulation-based and focuses on 28GHz mmWave cellular. Also, it only looks at loss-based CC algorithms and limited scenarios. We close this gap with a first experimental study that comprehensively evaluates the CC performance over commercial 60GHz WLAN using COTS devices. Our study aims to characterize the behavior and performance of different CC algorithms over 60GHz in a wide range of real-world mobility and blockage scenarios. We believe this is a critical step towards designing mmWave-friendly CC algorithms.","PeriodicalId":62224,"journal":{"name":"世界中学生文摘","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89240582","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}
世界中学生文摘Pub Date : 2019-10-04DOI: 10.1145/3349621.3355731
Karyn Doke, Nachuan Chengwang, Andrew Boggio-Dandry, Petko Bogdanov, M. Zheleva
{"title":"Demo: EApp: Improving Rural Emergency Preparedness and Response","authors":"Karyn Doke, Nachuan Chengwang, Andrew Boggio-Dandry, Petko Bogdanov, M. Zheleva","doi":"10.1145/3349621.3355731","DOIUrl":"https://doi.org/10.1145/3349621.3355731","url":null,"abstract":"Large-scale emergencies, both natural and man-made, are increasingly incurring devastating losses in terms of infrastructure and human lives. Rural areas, with their unique socio-economic structure, are particularly vulnerable to such losses. Emergency preparedness and response in rural areas severely lags behind that of their urban counterparts. One of the key limiting factors is the lack of adequate broadband connectivity, which limits agencies' capabilities to (i) disseminate emergency preparedness and response information to residents and (ii) efficiently coordinate in the face of a disaster. In this demo, we will present the EApp; a smartphone application that strives to improve the information access regarding emergencies for rural residents and first responders.","PeriodicalId":62224,"journal":{"name":"世界中学生文摘","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85726305","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}
世界中学生文摘Pub Date : 2019-10-04DOI: 10.1145/3349621.3355735
Dinesh Bharadia
{"title":"Sensing the Physical World with RF: Self-Interferometry & Passive-Interferometry","authors":"Dinesh Bharadia","doi":"10.1145/3349621.3355735","DOIUrl":"https://doi.org/10.1145/3349621.3355735","url":null,"abstract":"RF can provide a non-contact and non-line-of-sight of sensing of the physical world, therefore, it makes RF unique sensing modality that has found applications in automotive sensing, smart-home sensing, health monitoring, and many other applications. Over the years, sensing using RF has explored different application domains wherein RF sensing is used dedicatedly for sensing and may or may not be used for productive wireless communication concurrently. In this talk, I would present active and passive RF sensing platforms, wherein active approaches require a transmitter to transmit the signal and measure reflections to perceive the environment and passive relies on ambient transmissions. Furthermore, the platforms I would describe inherently allows for concurrent productive communication for both active and passive sensing. The landscape of concurrent RF sensing and communication is relatively unexplored, allowing students to choose many interesting research problems to choose from and platforms to conduct research.","PeriodicalId":62224,"journal":{"name":"世界中学生文摘","volume":"132 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90703468","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}
世界中学生文摘Pub Date : 2019-10-04DOI: 10.1145/3349621.3355729
Xumiao Zhang, Xiao Zhu, Y. Guo, Feng Qian, Z. Morley Mao
{"title":"Poster: Characterizing Performance and Power for mmWave 5G on Commodity Smartphones","authors":"Xumiao Zhang, Xiao Zhu, Y. Guo, Feng Qian, Z. Morley Mao","doi":"10.1145/3349621.3355729","DOIUrl":"https://doi.org/10.1145/3349621.3355729","url":null,"abstract":"During the first half of this year, three major operators in the US have announced their 5G deployment, which indicates the advent of next generation networks. To reduce the time to market, carriers utilize 5G NR for data plane operations while retaining the existing 4G infrastructure for control plane operations in what is called NSA (Non-Standalone) deployment mode defined as 5G system Phase I. EN-DC is a core technology of NSA 5G which supports the introduction of 5G services under 4G infrastructure. It enables a UE to connect to LTE and NR at the same time whereas the control plane connection is handled by LTE infrastructure. In this case, the UE will have only one single RRC state machine. Note that LTE RRC state machine contains RRC_CONNECTED and RRC_IDLE with different DRX settings while NR RRC has an additional state called RRC_INACTIVE. In this work, we aim to explore network and power characteristics for NSA 5G which introduces a surprisingly high data rate.","PeriodicalId":62224,"journal":{"name":"世界中学生文摘","volume":"152 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76012471","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}