Proceedings of the 20th annual international conference on Mobile computing and networking最新文献_第4页

Demo: real-time MU-MIMO channel analysis with a custom 802.11 implementation 演示:实时MU-MIMO信道分析与自定义802.11实现

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2641746

Christopher Hunter, P. Murphy, E. Welsh

引用次数: 0

Demo: tracking user browsing on a demo floor Demo:跟踪用户在演示层的浏览情况

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2641754

Aishwarya Ganesan, S. Rallapalli, Krishna Chintalapudi, V. Padmanabhan, L. Qiu

引用次数: 0

Demo: OpenAirInterface: an open LTE network in a PC 演示:OpenAirInterface: PC机的开放式LTE网络

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2641745

N. Nikaein, R. Knopp, F. Kaltenberger, Lionel Gauthier, C. Bonnet, D. Nussbaum, R. Ghaddab

{"title":"Demo: OpenAirInterface: an open LTE network in a PC","authors":"N. Nikaein, R. Knopp, F. Kaltenberger, Lionel Gauthier, C. Bonnet, D. Nussbaum, R. Ghaddab","doi":"10.1145/2639108.2641745","DOIUrl":"https://doi.org/10.1145/2639108.2641745","url":null,"abstract":"LTE 4G cellular networks are gradually being adopted by all major operators in the world and are expected to rule the cellular landscape at least for the current decade. They will also form the starting point for further progress beyond the current generation of mobile cellular networks to chalk a path towards fifth generation mobile networks. The lack of open cellular ecosystem has limited applied research in this field within the boundaries of vendor and operator R&D groups. Furthermore, several new approaches and technologies are being considered as potential elements making up such a future mobile network, including cloudification of radio network, radio network programability and APIs following SDN principles, native support of machine-type communication, and massive MIMO. Research on these technologies requires realistic and flexible experimentation platforms that offer a wide range of experimentation modes from real-world experimentation to controlled and scalable evaluations while at the same time retaining backward compatibility with current generation systems. In this work, we present OpenAirInterface (OAI) as a suitably flexible platform towards open LTE ecosystem and playground [1]. We will demonstrate an example of the use of OAI to deploy a low-cost open LTE network using commodity hardware with standard LTE-compatible devices. We also show the reconfigurability features of the platform.","PeriodicalId":331897,"journal":{"name":"Proceedings of the 20th annual international conference on Mobile computing and networking","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120968311","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: 87

Accurate indoor localization with zero start-up cost 精确的室内定位，零启动成本

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2639142

Swarun Kumar, Stephanie Gil, D. Katabi, D. Rus

{"title":"Accurate indoor localization with zero start-up cost","authors":"Swarun Kumar, Stephanie Gil, D. Katabi, D. Rus","doi":"10.1145/2639108.2639142","DOIUrl":"https://doi.org/10.1145/2639108.2639142","url":null,"abstract":"Recent years have seen the advent of new RF-localization systems that demonstrate tens of centimeters of accuracy. However, such systems require either deployment of new infrastructure, or extensive fingerprinting of the environment through training or crowdsourcing, impeding their wide-scale adoption. We present Ubicarse, an accurate indoor localization system for commodity mobile devices, with no specialized infrastructure or fingerprinting. Ubicarse enables handheld devices to emulate large antenna arrays using a new formulation of Synthetic Aperture Radar (SAR). Past work on SAR requires measuring mechanically controlled device movement with millimeter precision, far beyond what commercial accelerometers can provide. In contrast, Ubicarse's core contribution is the ability to perform SAR on handheld devices twisted by their users along unknown paths. Ubicarse is not limited to localizing RF devices; it combines RF localization with stereo-vision algorithms to localize common objects with no RF source attached to them. We implement Ubicarse on a HP SplitX2 tablet and empirically demonstrate a median error of 39 cm in 3-D device localization and 17 cm in object geotagging in complex indoor settings.","PeriodicalId":331897,"journal":{"name":"Proceedings of the 20th annual international conference on Mobile computing and networking","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128230442","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: 371

Jigsaw: indoor floor plan reconstruction via mobile crowdsensing 拼图:通过移动众测重建室内平面图

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2639134

Ruipeng Gao, Mingmin Zhao, Tao Ye, Fan Ye, Yizhou Wang, Kaigui Bian, Tao Wang, Xiaoming Li

{"title":"Jigsaw: indoor floor plan reconstruction via mobile crowdsensing","authors":"Ruipeng Gao, Mingmin Zhao, Tao Ye, Fan Ye, Yizhou Wang, Kaigui Bian, Tao Wang, Xiaoming Li","doi":"10.1145/2639108.2639134","DOIUrl":"https://doi.org/10.1145/2639108.2639134","url":null,"abstract":"The lack of floor plans is a critical reason behind the current sporadic availability of indoor localization service. Service providers have to go through effort-intensive and time-consuming business negotiations with building operators, or hire dedicated personnel to gather such data. In this paper, we propose Jigsaw, a floor plan reconstruction system that leverages crowdsensed data from mobile users. It extracts the position, size and orientation information of individual landmark objects from images taken by users. It also obtains the spatial relation between adjacent landmark objects from inertial sensor data, then computes the coordinates and orientations of these objects on an initial floor plan. By combining user mobility traces and locations where images are taken, it produces complete floor plans with hallway connectivity, room sizes and shapes. Our experiments on 3 stories of 2 large shopping malls show that the 90-percentile errors of positions and orientations of landmark objects are about 1~2m and 5~9°, while the hallway connectivity is 100% correct.","PeriodicalId":331897,"journal":{"name":"Proceedings of the 20th annual international conference on Mobile computing and networking","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134059254","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: 249

Demo: mobile opportunistic system for experience sharing (MOSES) in indoor exhibitions 演示:室内展览经验分享(MOSES)移动机会系统

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2641750

F. Abdesslem, Anders Lindgren

引用次数: 7

Poster: Are you driving?: non-intrusive driver detection using built-in smartphone sensors 海报:你在开车吗?:使用内置智能手机传感器的非侵入式驾驶员检测

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2642896

Homin Park, DaeHan Ahn, M. Won, S. Son, Taejoon Park

引用次数: 8

Demo: Luxapose: indoor positioning with mobile phones and visible light 演示:Luxapose:利用手机和可见光进行室内定位

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2641747

Ye-Sheng Kuo, P. Pannuto, P. Dutta

{"title":"Demo: Luxapose: indoor positioning with mobile phones and visible light","authors":"Ye-Sheng Kuo, P. Pannuto, P. Dutta","doi":"10.1145/2639108.2641747","DOIUrl":"https://doi.org/10.1145/2639108.2641747","url":null,"abstract":"We explore the indoor positioning problem with unmodified smartphones and slightly-modified commercial LED luminaires. The luminaires - modified to allow rapid, on-off keying - transmit their identifiers and/or locations encoded in human-imperceptible optical pulses. A camera-equipped smartphone, using just a single image frame capture, can detect the presence of the luminaires in the image, decode their transmitted identifiers and/or locations, and determine the smartphone's location and orientation relative to the luminaires. Continuous image capture and processing enables continuous position updates. The key insights underlying this work are (i) the driver circuits of emerging LED lighting systems can be easily modified to transmit data through on-off keying; (ii) the rolling shutter effect of CMOS imagers can be leveraged to receive many bits of data encoded in the optical transmissions with just a single frame capture, (iii) a camera is intrinsically an angle-of-arrival sensor, so the projection of multiple nearby light sources with known positions onto a camera's image plane can be framed as an instance of a sufficiently-constrained angle-of-arrival localization problem, and (iv) this problem can be solved with optimization techniques.","PeriodicalId":331897,"journal":{"name":"Proceedings of the 20th annual international conference on Mobile computing and networking","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133797218","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: 16

Rethink energy accounting with cooperative game theory 用合作博弈论重新思考能源会计

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2639128

Mian Dong, Tian Lan, Lin Zhong

{"title":"Rethink energy accounting with cooperative game theory","authors":"Mian Dong, Tian Lan, Lin Zhong","doi":"10.1145/2639108.2639128","DOIUrl":"https://doi.org/10.1145/2639108.2639128","url":null,"abstract":"Energy accounting determines how much a software principal contributes to the total system energy consumption. It is the foundation for evaluating software and for operating system based energy management. While various energy accounting policies have been tried, there is no known way to evaluate them directly simply because it is hard to track all hardware usage by software in a heterogeneous multicore system like modern smartphones and tablets. In this work, we argue that energy accounting should be formulated as a cooperative game and that the Shapley value provides the ultimate ground truth for energy accounting policies. We reveal the important flaws of existing energy accounting policies based on the Shapley value theory and provide Shapley value-based energy accounting, a practical approximation of the Shapley value, for battery-powered mobile systems. We evaluate this approximation against existing energy accounting policies in two ways: (i) how well they identify the top energy consuming applications, and (ii) how effective they are in system energy management. Using a prototype based on Texas Instruments Pandaboard and smartphone workload, we experimentally demonstrate existing energy accounting policies can deviate by 400% in attributing energy consumption to running applications and can be up to 25% less effective in system energy management when compared to Shapley value-based energy accounting.","PeriodicalId":331897,"journal":{"name":"Proceedings of the 20th annual international conference on Mobile computing and networking","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116137786","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: 38

Poster: HiLight: hiding bits in pixel translucency changes 海报:高光:隐藏位在像素半透明的变化

Proceedings of the 20th annual international conference on Mobile computing and networking Pub Date : 2014-09-07 DOI: 10.1145/2639108.2642895

Tianxing Li, Chuankai An, A. Campbell, Xia Zhou

引用次数: 3