Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization最新文献

Demo: Nano Power Draw in Duty-Cycled Wireless Sensor Networks 演示:占空比无线传感器网络中的纳米功耗

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355478

Giannis Kazdaridis, Ioannis Zographopoulos, N. Sidiropoulos, Polychronis Symeonidis, T. Korakis

引用次数: 2

Poster: Secure Visible Light Communication via Two-Dimensional Spatially Aliased Patterns 海报:通过二维空间混叠模式安全可见光通信

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355724

Hao Pan, Yi-Chao Chen, Guangtao Xue

引用次数: 2

Evaluation of LoRa Performance in a City-wide Testbed: Experimentation Insights and Findings 在城市范围的测试平台上评估LoRa性能:实验见解和发现

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355474

Giannis Kazdaridis, Stratos Keranidis, Polychronis Symeonidis, Panagiotis Tzimotoudis, Ioannis Zographopoulos, P. Skrimponis, T. Korakis

引用次数: 11

Time-of-flight Wireless Indoor Navigation System for Industrial Environment 工业环境下的飞行时间无线室内导航系统

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355476

Maurizio Rea, Héctor Cordobés, D. Giustiniano

引用次数: 6

Demo: LoRa Mesh Network Experimentation in a City-Wide Testbed 演示:LoRa Mesh网络在全市试验台的试验

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355479

Panagiotis Tzimotoudis, Stratos Keranidis, Giannis Kazdaridis, Polychronis Symeonidis, T. Korakis

引用次数: 2

Learning from Industrial Ixperimental Research 从工业实验研究中学习

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3361681

Ilias Leontiadis, Diego Perino

引用次数: 0

Free Your CSI: A Channel State Information Extraction Platform For Modern Wi-Fi Chipsets 释放您的CSI:一个用于现代Wi-Fi芯片组的通道状态信息提取平台

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355477

F. Gringoli, Matthias Schulz, Jakob Link, M. Hollick

{"title":"Free Your CSI: A Channel State Information Extraction Platform For Modern Wi-Fi Chipsets","authors":"F. Gringoli, Matthias Schulz, Jakob Link, M. Hollick","doi":"10.1145/3349623.3355477","DOIUrl":"https://doi.org/10.1145/3349623.3355477","url":null,"abstract":"Modern wireless transmission systems heavily benefit from knowing the channel response. The evaluation of Channel State Information (CSI) during the reception of a frame preamble is fundamental to properly equalizing the rest of the transmission at the receiver side. Reporting this state information back to the transmitter facilitates mechanisms such as beamforming and MIMO, thus boosting the network performance. While these features are an integral part of standards such as 802.11ac, accessing CSI data on commercial devices is either not possible, limited to outdated chipsets or very inflexible. This hinders the research and development of innovative CSI-dependent techniques including localization, object tracking, and interference evaluation. To help researchers and practitioners, we introduce the nexmon CSI Extractor Tool. It allows per-frame CSI extraction for up to four spatial streams using up to four receive chains on modern Broadcom and Cypress Wi-Fi chips with up to 80MHz bandwidth in both the 2.4 and 5GHz bands. The tool supports devices ranging from the low-cost Raspberry Pi platform, over mobile platforms such as Nexus smartphones to state-of-the-art Wi-Fi APs. We release all tools and Wi-Fi firmware patches as extensible open source project. It includes our user-friendly smartphone application to demonstrate the CSI extraction capabilities in form of a waterfall diagram.","PeriodicalId":403596,"journal":{"name":"Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116987318","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: 145

Arena: A 64-antenna SDR-based Ceiling Grid Testbed for Sub-6 GHz Radio Spectrum Research 竞技场:用于sub - 6ghz无线电频谱研究的64天线sdr天花板网格测试平台

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355473

L. Bertizzolo, Leonardo Bonati, Emrecan Demirors, T. Melodia

{"title":"Arena: A 64-antenna SDR-based Ceiling Grid Testbed for Sub-6 GHz Radio Spectrum Research","authors":"L. Bertizzolo, Leonardo Bonati, Emrecan Demirors, T. Melodia","doi":"10.1145/3349623.3355473","DOIUrl":"https://doi.org/10.1145/3349623.3355473","url":null,"abstract":"Arena is an open-access wireless testing platform based on a grid of antennas mounted on the ceiling of a large office-space environment. Each antenna is connected to programmable software-defined radios enabling sub-6 GHz 5G-and-beyond spectrum research. With 12 computational servers, 24 software defined radios synchronized at the symbol level, and a total of 64 antennas, Arena provides the computational power and the scale to foster new technology development in some of the most crowded spectrum bands. Arena is based on a clean three-tier design, where the servers and the software defined radios are housed in a double rack in a dedicated room, while the antennas are hung off the ceiling of a 2240 square feet office space and cabled to the radios through 100 ft long cables. This ensures a reconfigurable, scalable, and repeatable real-time experimental evaluation in a real wireless indoor environment. This article introduces for the first time architecture, capabilities, and system design choices of Arena, and provide details of the software and hardware implementation of the different testbed components. Finally, we showcase some of the capabilities of Arena in providing a testing ground for key wireless technologies, including synchronized MIMO transmission schemes, multi-hop ad hoc networking, multi-cell LTE networks, and spectrum sensing for cognitive radio.","PeriodicalId":403596,"journal":{"name":"Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121028730","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: 15

Enabling OFDMA in Wireless Backscatter 在无线反向散射中启用OFDMA

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-10-04 DOI: 10.1145/3349623.3355483

Xiaohua Tian

{"title":"Enabling OFDMA in Wireless Backscatter","authors":"Xiaohua Tian","doi":"10.1145/3349623.3355483","DOIUrl":"https://doi.org/10.1145/3349623.3355483","url":null,"abstract":"Wireless backscatter communication can provide ultra-low power backhaul to Internet-of-Things (IoT) devices, which usually have very limited energy budgets. With proliferation of IoT widgets into human activities, an important design goal for the backhaul is to connect as many devices as possible, which are featured by short bursts of data. The crux to achieve this goal is to enhance concurrency of the wireless backscatter network, so that many concurrent transmissions can be supported. Orthogonal frequency division multiple access (OFDMA) is a multiple access mechanism based on orthogonal frequency division multiplexing (OFDM), which is a multi-carrier modulation mechanism widely used in modern wireless systems including 802.11 a/g/n/ac, 4G and 5G. This talk focuses on how to enable OFDMA in the wireless backscatter network, which not only maintains the advantage of ultra-low power consumption but also improve the system concurrency. The major challenge for enabling OFDMA in wireless backscatter is to achieve the strict synchronization in both time and frequency domain. In fact, the synchronization is critical for all the OFDMA systems; however, in the OFDMA backscatter network, the signal at the receiver side is reflected from backscattering devices (tags), thus introduce more opportunities for offsets in both time and frequency domain, which incurs new challenges in the system design. This talk presents the major challenges in realizing OFDMA backscatter network, and provide our solutions to deal with those problems. The design for excitation signal transmitter, tag and receiver will be explained. The phenomena we observed in realizing the system will be illustrated. Moreover, the new issues discovered in existing OFDMA backscatter is to be revealed, and the preliminary result for the future work is also to be presented.","PeriodicalId":403596,"journal":{"name":"Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128076265","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

Dead on Arrival: An Empirical Study of The Bluetooth 5.1 Positioning System 一到即死:蓝牙5.1定位系统的实证研究

Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization Pub Date : 2019-09-02 DOI: 10.1145/3349623.3355475

Marco Cominelli, P. Patras, F. Gringoli

{"title":"Dead on Arrival: An Empirical Study of The Bluetooth 5.1 Positioning System","authors":"Marco Cominelli, P. Patras, F. Gringoli","doi":"10.1145/3349623.3355475","DOIUrl":"https://doi.org/10.1145/3349623.3355475","url":null,"abstract":"The recently released Bluetooth 5.1 specification introduces fine-grained positioning capabilities in this wireless technology, which is deemed essential to context-/location-based Internet of Things (IoT) applications. In this paper, we evaluate experimentally, for the first time, the accuracy of a positioning system based on the Angle of Arrival (AoA) mechanism adopted by the Bluetooth standard. We first scrutinize the fidelity of angular detection and then assess the feasibility of using angle information from multiple fixed receivers to determine the position of a device. Our results reveal that angular detection is limited to a restricted range. On the other hand, even in a simple deployment with only two antennas per receiver, the AoA-based positioning technique can achieve sub-meter accuracy; yet attaining localization within a few centimeters remains a difficult endeavor. We then demonstrate that a malicious device may be able to easily alter the truthfulness of the measured AoA, by tampering with the packet structure. To counter this protocol weakness, we propose simple remedies that are missing in the standard, but which can be adopted with little effort by manufacturers, to secure the Bluetooth 5.1 positioning system.","PeriodicalId":403596,"journal":{"name":"Proceedings of the 13th International Workshop on Wireless Network Testbeds, Experimental Evaluation & Characterization","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132324315","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: 49