{"title":"Redundant Multipath-TCP Scheduling with Desired Packet Latency","authors":"V. Vu, B. Walker","doi":"10.1145/3349625.3355440","DOIUrl":"https://doi.org/10.1145/3349625.3355440","url":null,"abstract":"Several network transport protocols have been developed to provide reliable connection-oriented multipath concurrent data transmission. One of their advantages is reducing end-to-end latency by redundantly transmitting data through multiple network paths. In this paper, we address the problem of redundant packet scheduling in MPTCP over networks with asymmetric heterogeneous paths. We propose two schedulers, SlothTail and ReMDeLa (Redundant MPTCP Scheduling With Desired Packet Latency), which aim to maximize the quantile of one-way segment latencies satisfying a target latency threshold. Our experimental results show that ReMDeLa satisfies an application's desired latency better than existing redundant schedulers.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115104634","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}
{"title":"Towards a Programmable World: Lua-based Dynamic Local Orchestration of Networked Microcontrollers","authors":"Fiona Guerin, Teemu Kärkkäinen, J. Ott","doi":"10.1145/3349625.3355441","DOIUrl":"https://doi.org/10.1145/3349625.3355441","url":null,"abstract":"Microcontrollers execute much of the logic that makes the appliances and infrastructure around us work. Recent years have seen a significant increase in the microcontroller capabilities, with modern designs including multiple 32-bit processor cores and integrated wireless communications. At the same time, microcontrollers still typically execute fixed code burned into their firmware, leaving much of their capacity unused. In this paper we propose a Lua-based framework for microcontrollers, capable of dynamically receiving code for execution from nearby devices via wireless networks. We show that this framework allows multiple nearby microcontroller devices to be dynamically orchestrated to compose complex services. This serves as a step towards making the physical world around us dynamically programmable, enabling the creation of new local and pervasive applications that are deeply integrated into the physical world.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122115933","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}
{"title":"Enabling Seamless Container Migration in Edge Platforms","authors":"Ali E. Elgazar, Khaled A. Harras","doi":"10.1145/3349625.3355438","DOIUrl":"https://doi.org/10.1145/3349625.3355438","url":null,"abstract":"Fog and cloud computing are becoming increasingly popular as computational offloading platforms. However, many areas throughout the world either do not have a stable enough network connection to effectively use cloud computing, or do not have the required infrastructure or resources to set up fog nodes. Moreover, many application categories such as cognitive assistance and augmented reality applications require single digit latency, which both cloud and fog cannot provide. As such, these areas can benefit tremendously from edge computing. To ensure single digit latency, Edge nodes are typically other co-located devices within single-hop proximity. Having said that, due to user mobility, single edge devices set up at home will not provide the required latency if the user is on the move. Therefore, we introduce Teddybear, a Docker based system that seamlessly and efficiently migrates server containers between edge computing platforms by utilizing both the Internet and the user's mobile device as a carrier for the container. We show how Teddybear can continue to provide ultra-low latency services to users on the move, with minimal service downtime as they change locations.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130498943","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}
{"title":"Spectrum Measurement and Management for Future Spectrum-sharing Networks","authors":"M. Zheleva","doi":"10.1145/3349625.3358900","DOIUrl":"https://doi.org/10.1145/3349625.3358900","url":null,"abstract":"Mobile wireless networks are at a tipping point. While traditionally they have been a key enabler of distributed Internet applications, in recent years they have become throttled by heterogeneous and bandwidth-hungry applications such as immersive virtual reality and the Internet of Things. The rapid growth of the number of connected devices and the volume and diversity of traffic they generate calls for a fundamental rethink in wireless network design and operation. In addition, future wireless networks have to be conceived with an outlook towards inclusiveness to equally cater to infrastructure-challenged environments such as rural and post-disaster areas. This talk will introduce our work on future networks with Dynamic Spectrum Access. We will begin by discussing the speed and latency requirements of future applications. We will then talk about our work on automating the measurement and management of the radio spectrum for future spectrum-sharing applications. In the second part of the talk, we will discuss challenges that inhibit mobile wireless network advances in infrastructure-challenged areas and discuss the advantages of shared spectrum access for such environments. We will talk about several of the systems we have developed to bridge the connectivity gap in rural areas and discuss their applicability in rural emergency preparedness and response.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117201119","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}
P. Apostolopoulos, M. Torres, Eirini-Eleni Tsiropoulou
{"title":"Satisfaction-aware Data Offloading in Surveillance Systems","authors":"P. Apostolopoulos, M. Torres, Eirini-Eleni Tsiropoulou","doi":"10.1145/3349625.3355437","DOIUrl":"https://doi.org/10.1145/3349625.3355437","url":null,"abstract":"In this paper, we exploit the capabilities of Fully Autonomous Aerial Systems' (FAAS) and the Mobile Edge Computing (MEC) to introduce a novel data offloading framework and support the energy and time efficient video processing in surveillance systems based on game theory in satisfaction form. A surveillance system is introduced consisting of Areas of Interest (AoIs), where a MEC server is associated with each AoI, and a FAAS is flying above the AoIs to collectively support the IP cameras' computing demands. Each IP camera adopts a utility function capturing its Quality of Service (QoS) considering the experienced time and energy overhead to offload and process its data either remotely or locally. A non-cooperative game among the cameras is formulated to determine the amount of offloading data to the MEC server and/or the FAAS. The novel concept of Satisfaction Equilibrium (SE) is introduced where the IP cameras satisfy their minimum QoS prerequisites instead of maximizing their performance by wasting additional system resources. A distributed learning algorithm determines the IP cameras' stable data offloading, while a reinforcement learning algorithm determines the FAAS's movement among the AoIs exploiting the accuracy, timeliness, and certainty of the collected data by the IP cameras per AoI. The performance evaluation of the proposed framework is achieved via modeling and simulation.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123700210","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}
{"title":"Monitoring Food Storage with the Help of a LoRa-based DTWSN","authors":"Björn Gernert, J. Schlichter, L. Wolf","doi":"10.1145/3349625.3355442","DOIUrl":"https://doi.org/10.1145/3349625.3355442","url":null,"abstract":"Food such as grain, potatoes, onions and other vegetables as well as fruits is stored in warehouses after harvesting which ensures availability throughout the year. Good storage conditions are crucial to avoid loss due to wrong conditions such as temperature, humidity, and attacks by bacteria. Therefore, modern warehouses are equipped with Heating, Ventilation and Air Conditioning (HVAC) systems including sensors that continuously monitor the warehouse to provide optimal conditions for storage. So far such monitoring sensors are installed outside the goods, thus, providing a coarse estimate of the real conditions only. We present a LoRa-based system which improves such warehouse monitoring by enabling sensor nodes to transmit data from the inside of food storage boxes to a sink. Our system was evaluated in a potato warehouse; this is a challenging environment due to the high water content of the potatoes (up to 80%). The results show that with the help of the developed system a communication through more than 3m of potatoes is possible and that the developed communication protocol works reliably.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125450784","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}
{"title":"Towards Exploiting Wi-Fi Signals From Low Density Infrastructure for Crowd Estimation","authors":"Leonardo Tonetto, Moritz Untersperger, J. Ott","doi":"10.1145/3349625.3355439","DOIUrl":"https://doi.org/10.1145/3349625.3355439","url":null,"abstract":"The ubiquity of wireless devices such as smartphones, tablets and laptops, has enabled sensing large crowds. This was made possible with numerous methods available that mostly listen to Bluetooth or Wi-Fi channels to observe traffic diversity, sources, and destinations. On one hand, it is clearly useful to create crowd awareness, for example to estimate the number of people and assess people flows inside buildings or in areas, with applications in disaster management, network evaluation, and human mobility modeling, as well as for individual mobile devices to assess their context. At the same time, most of these network activity monitoring methods risk compromising the privacy of the individuals being counted and possibly---deliberately or inadvertently---tracked. That is, they may leak private information about people's individual mobility patterns without their consent or even awareness. In this paper, we take a first stab at addressing the problem of privacy-preserving crowd (density) estimation by utilizing the received signal strength (RSS) of Wi-Fi signals from stationary beacons. We use management frames as an approximation of ground truth to validate our observations. We evaluate this method in a real world measurement, observing very strong correlations between the presence of over 35,000 mobile devices in a large building and Wi-Fi RSS values from stationary devices.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124635344","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}
{"title":"Proceedings of the 14th Workshop on Challenged Networks","authors":"S. Tarkoma, L. Wolf","doi":"10.1145/3349625","DOIUrl":"https://doi.org/10.1145/3349625","url":null,"abstract":"It is our great pleasure to welcome you to the Twelfth Workshop on Challenged Networks (CHANTS'17). The workshop series has already a long tradition to serve as premium forum for the discussion of research on challenged networks, i.e., networks which deal with those situations where communication is desired, but traditional Internet architectures fail to provide it effectively. \u0000 \u0000This year's edition had the goal to encourages submissions of theoretical and experimental work, with a primary interest in the new directions of challenged networking such as crowdsourcing, mobile cloud/mobile edge/fog computing, IoT, WSN, CPS, mobile data offloading, and challenged SDN. \u0000 \u0000The program consists of 6 full papers, which we accepted out of 16 submissions, discussing security, IoT, vehicular, and offloading issues. Additionally, we have an extensive demo and poster session where further topics such as challenged networks aspects in automation, smart farming, and web are considered. The program is complemented with a keynote given by Prof. Jorg Ott and an industrial keynote by Dr. Henning Sanneck.","PeriodicalId":143275,"journal":{"name":"Proceedings of the 14th Workshop on Challenged Networks","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133917608","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}