2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)最新文献

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Zephyr: First-person wireless analytics from high-density in-stadium deployments Zephyr:从高密度体育场内部署的第一人称无线分析
Nathan D. Mickulicz, Utsav Drolia, P. Narasimhan, R. Gandhi
{"title":"Zephyr: First-person wireless analytics from high-density in-stadium deployments","authors":"Nathan D. Mickulicz, Utsav Drolia, P. Narasimhan, R. Gandhi","doi":"10.1109/WoWMoM.2016.7523552","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523552","url":null,"abstract":"Zephyr is a first-person wireless-performance data-collection approach to study the end-user's perspective of the wireless-network's performance using an OTT video-streaming service used in 35 mobile applications and 25 sports stadiums. We use Zephyr to provide insights into user behavior and user disengagement from production traces gathered over 2+ years. We identify the different types of failures that we've observed, and describe how frequently they occur. Finally, we correlate low-level Wi-Fi performance data with application-level failures and describe the trends that we observe. The data from Zephyr reveals that 50% of users disengage if video playback does not begin within 12 seconds, and also if video playback stalls, instream, for more than 6 seconds. The most dominant failure type for video playback is cancellation during the initial buffering phase, which accounts for 30% of all streams.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126290513","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
Enabling crowdsourced live event coverage with adaptive collaborative upload strategies 通过自适应协作上传策略实现众包现场活动报道
Björn Richerzhagen, Julian Wulfheide, H. Koeppl, A. Mauthe, K. Nahrstedt, R. Steinmetz
{"title":"Enabling crowdsourced live event coverage with adaptive collaborative upload strategies","authors":"Björn Richerzhagen, Julian Wulfheide, H. Koeppl, A. Mauthe, K. Nahrstedt, R. Steinmetz","doi":"10.1109/WoWMoM.2016.7523526","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523526","url":null,"abstract":"User-generated content, such as short video snippets or tweets, is increasingly used in event coverage even by professional media outlets. Especially in unforeseen events, or when dealing with large crowds, these snippets provide unique perspectives on the scene. While uploading a tweet does not impose much load on the communication system, uploading live video at today's camera resolutions consumes a significant amount of resources. At the same time, only a fraction of the uploaded streams is suitable for event coverage (e.g., shakiness of the video, focus on the scene, obstructions). By identifying the set of relevant streams early, and postponing the upload of other content, the available network resources can be dedicated to the upload of the most relevant streams. In this paper, we propose a set of strategies to collaboratively upload the most relevant streams at high quality by utilizing freed resources. We argue that these strategies can be exchanged during runtime to adapt to user dynamics and network heterogeneity, and present initial findings on the performance of our system.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129624300","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
Buddies, not enemies: Fairness and performance in cellular offloading 伙伴,而不是敌人:细胞卸载中的公平性和性能
Nils Richerzhagen, Björn Richerzhagen, Michael Walter, D. Stingl, R. Steinmetz
{"title":"Buddies, not enemies: Fairness and performance in cellular offloading","authors":"Nils Richerzhagen, Björn Richerzhagen, Michael Walter, D. Stingl, R. Steinmetz","doi":"10.1109/WoWMoM.2016.7523505","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523505","url":null,"abstract":"Recently, a number of offloading approaches have been proposed to reduce the burden on the cellular infrastructure, especially during peak hours. Ranging from pure data offloading concepts using local caches to fully-fledged services operating on ad hoc networks, these approaches are mostly tuned towards their performance. Consequently, cache hit ratios, achieved throughput, or end-to-end latencies, are prominent evaluation metrics. However, when utilizing users' resources to improve the performance of a shared service, the fairness with respect to the resources contributed by individual users should be considered as well. Resource consumption, e.g., the battery lifetime, can vary significantly between individual users, depending on their contributions. This effect can have a significant impact on user acceptance and, thus, the usability of the overall system. In this paper, we examine the trade-off between overall system performance and fairness w.r.t. resource utilization for a state-of-the-art monitoring service relying on offloading. To bridge the identified gap between performance and fairness, we propose a number of protocol adjustments to increase the system's fairness. Through an extensive simulation study we show that the proposed mechanisms lead to improvements in the overall achieved fairness of up to 60%, with below 4% degradation in service quality.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130599000","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
Towards content delivery optimization in future wireless networks 面向未来无线网络的内容交付优化
P. Kamaraju
{"title":"Towards content delivery optimization in future wireless networks","authors":"P. Kamaraju","doi":"10.1109/WoWMoM.2016.7523545","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523545","url":null,"abstract":"The last few years have seen an enormous growth in the usage of smart phones and this trend is expected to continue in the near future with increased processing power and larger form factors. This explosive growth has contributed to an unprecedented adoption of mobile data services and increase in data usage. The demand is also driving the development of next generation networks to support novel data hungry and user-experience focused applications such as virtual reality video. Global mobile data traffic is increasing at an unprecedented rate and video traffic alone currently constitutes about 50% of the total traffic and is predicted to grow up to 70% by 2021 as user preferences are shifting towards more video based applications relative to browsing. The explosion of traffic associated with video content poses significant challenges for mobile content provision. While, on the one hand, mobile video traffic surge is forecasted to require significant investments in bandwidth acquisition, infrastructure deployment and roll-out, on the other hand, users are not likely to be willing to pay significantly more than they are today. Operators would in turn like to charge the content providers for revenue. Furthermore, user expectations for high quality video content is constantly increasing.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"116 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131486926","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
Traffic situation estimator for Adaptive Cruise Control 自适应巡航控制的交通状况估计
Tianyi Yu, Jenny Eden, Cristofer Englund, Tony Larsson
{"title":"Traffic situation estimator for Adaptive Cruise Control","authors":"Tianyi Yu, Jenny Eden, Cristofer Englund, Tony Larsson","doi":"10.1109/WoWMoM.2016.7523567","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523567","url":null,"abstract":"A traffic situation estimator capable of analyzing driving behavior utilizing an image analysis-based tracking module is presented. The behavior is analyzed by using a state machine driven counter to estimate the traffic rhythm and determine if the detected vehicles are approaching, getting away, have been overtaken or have overtaken the ego-vehicle. Depending on the result, the traffic situation estimator suggest different reactions, either to drive faster, slower or optionally suggest to overtake vehicles ahead to help the driver to follow the traffic rhythm which in turn will improve safety and energy efficiency. The proposed approach is implemented in a smart-phone and has shown good performance while testing the application on a two-lane highway.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130149140","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
Should I seed or should I not: On the remuneration of seeders in D2D offloading 我应该播种还是不应该播种:关于在D2D卸载中播种者的报酬
Filippo Rebecchi, M. Amorim, V. Conan
{"title":"Should I seed or should I not: On the remuneration of seeders in D2D offloading","authors":"Filippo Rebecchi, M. Amorim, V. Conan","doi":"10.1109/WoWMoM.2016.7523496","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523496","url":null,"abstract":"Traffic offloading using opportunistic device-to-device (D2D) communications is a new and exciting opportunity for cellular operators to cope with the unprecedented mobile data growth. A limitation of existing proposals is that they assume that all terminals are, by default, involved in the D2D forwarding process. In particular, they do not capture the need to reward seed users. For this reason, we include a rewarding cost in the design of the opportunistic offloading strategy. In our solution, we make the difference between nodes that receive content through the cellular channel only (leechers) and nodes that take part in the forwarding process (seeders). The key point for an operator is to design a global strategy to select which nodes act as seeders and which ones as leechers, in order to reduce the total dissemination cost. We formulate this question as a stochastic control problem that we solve using an application of Pontryagin's Maximum Principle. We provide a mathematical framework to devise the optimal strategy for opportunistic offloading under a generic cost model. First, we show that an optimal solution exists; then, from this policy, we extract some insights to develop heuristics. Finally, we discuss the advantages of the proposed model compared to the classic seeder-only model. We demonstrate that separating seeders/leechers leads to better incentive strategies in the most demanding cases of content with a large span of delivery delays.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121853362","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
A novel parallelized motion estimation algorithm for GPU based video encoding 一种新的基于GPU视频编码的并行运动估计算法
Wenbin Jiang, Pengcheng Wang, Min Long, Hai Jin
{"title":"A novel parallelized motion estimation algorithm for GPU based video encoding","authors":"Wenbin Jiang, Pengcheng Wang, Min Long, Hai Jin","doi":"10.1109/WoWMoM.2016.7523558","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523558","url":null,"abstract":"Cloud-based video encoding has become more and more popular in Internet, especially for mobile clients, considering their limited resources. Recently, GPUs (Graphics Processor Units) make the cloud-based video encoding more economic and efficient. However, the motion estimation in inter prediction, which usually occupies about 70% encoding time in H.264/AVC, is still a big headache because of its complexity. In this paper, a novel motion estimation algorithm is proposed, which is customized for GPU-based cloud encoding, considering motion tendency. A mean subsampling template is presented for a pre-search approach to get motion tendency, which can reduce computation cost obviously with less quality loss. To improve the efficiency of the CUDA (Compute Unified Device Architecture) thread organization for motion estimation, a section-division method is presented. Experimental results show that the proposed algorithm can reduce nearly 22% computation time with less video quality loss, compared with the state-of-the-art work.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126727601","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
Device-free indoor localization and tracking through Human-Object Interactions 通过人机交互实现无设备室内定位和跟踪
Wenjie Ruan, Quan Z. Sheng, Lina Yao, Tao Gu, M. Ruta, Longfei Shangguan
{"title":"Device-free indoor localization and tracking through Human-Object Interactions","authors":"Wenjie Ruan, Quan Z. Sheng, Lina Yao, Tao Gu, M. Ruta, Longfei Shangguan","doi":"10.1109/WoWMoM.2016.7523524","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523524","url":null,"abstract":"Device-free indoor localization aims to localize people without requiring them to carry any devices or being actively involved in the localizing process. It underpins a wide range of applications including older people surveillance, intruder detection and indoor navigation. However, in a cluttered environment such as a residential home, the Received Signal Strength Indicator (RSSI) is heavily obstructed by furniture or metallic appliances, thus reducing the localization accuracy. This environment is important to observe as human-object interaction (HOI) events, detected by pervasive sensors, can potentially reveal people's interleaved locations during daily living activities, such as watching TV, opening the fridge door. This paper aims to enhance the performance of commercial off-the-shelf (COTS) RFID-based localization system by leveraging HOI contexts in a furnished home. Specifically, we propose a general Bayesian probabilistic framework to integrate both RSSI signals and HOI events to infer the most likely location and trajectory. Experiments conducted in a residential house demonstrate the effectiveness of our proposed method, in which we can localize a resident with average 95% accuracy and track a moving subject with 0.58m mean error distance.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129041399","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: 35
Jamming and advanced modular-based blind rendezvous algorithms for Cognitive Radio Networks 认知无线电网络中的干扰和基于模块化的先进盲交会算法
Young-Hyun Oh, D. Thuente
{"title":"Jamming and advanced modular-based blind rendezvous algorithms for Cognitive Radio Networks","authors":"Young-Hyun Oh, D. Thuente","doi":"10.1109/WoWMoM.2016.7523514","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523514","url":null,"abstract":"Modular-based channel hopping (CH) rendezvous algorithms can provide guaranteed rendezvous for Cognitive Radio Networks (CRNs) without time synchronization or Common Control Channels (i.e., blind rendezvous). Recently, the Enhanced Jump-Stay (EJS) scheme [13] has been proposed that decreases the Maximum Time To Rendezvous (MTTR) and the Expected Time To Rendezvous (ETTR) for users with a different number of channels (asymmetric). We develop a Symmetric Channel Detecting Jamming (SCDJ) attack and a novel probabilistic Asymmetric Channel Detecting Jamming (ACDJ) attack that dramatically decrease the rendezvous success rates of EJS. Our simulation results show that ACDJ significantly reduces the rendezvous probability of the asymmetric EJS scheme. We analyze the Random rendezvous scheme for the asymmetric model and show it vastly outperforms asymmetric EJS under ACDJ. We also developed the Random Enhanced Jump Stay (REJS) rendezvous that guarantees MTTR, significantly decreases the Expected Time To Rendezvous (ETTR) of EJS, and, due to the random part, appears to be resistant to channel detecting jamming attacks. REJS appears to be uniformly better than EJS with major performance improvements and significantly smaller theoretical ETTR upper-bounds and similar positive simulation results.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133601008","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
Wireless bandwidth management for multiple video clients through network-assisted DASH 通过网络辅助DASH对多个视频客户端进行无线带宽管理
T. Ojanperä, H. Kokkoniemi-Tarkkanen
{"title":"Wireless bandwidth management for multiple video clients through network-assisted DASH","authors":"T. Ojanperä, H. Kokkoniemi-Tarkkanen","doi":"10.1109/WoWMoM.2016.7523530","DOIUrl":"https://doi.org/10.1109/WoWMoM.2016.7523530","url":null,"abstract":"Today's video streaming services utilize widely adaptive streaming techniques implemented over HTTP. While the approach is robust and compatible with today's internet architecture, middleboxes, and CDNs, it leaves several places for optimization. This paper proposes enhancements to the video bitrate adaptation solution of adaptive HTTP streaming by defining two network-assisted adaptation approaches based on a cognitive network management architecture. The architecture considered in the paper supports enhanced network and service awareness and distributed control over video bitrate adaptation. The presented bandwidth management concepts are experimented in a testbed environment, including prototypes of the proposed algorithms, signaling framework, and video streaming service supporting MPEG-DASH. The implementation details and evaluation results of the work introduced in this overview paper are planned to be included into a follow-up paper.","PeriodicalId":187747,"journal":{"name":"2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131999937","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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