研究者詳細 - 野林　大起

論文 - 野林　大起

分割表示108 件中 81 - 100 件目／全件表示 >>

Estimating the Randomness of Domain Names for DGA Bot Callbacks 査読有り

Akihiro Satoh, Yutaka Nakamura, Daiki Nobayashi, Takeshi Ikeanga,

IEEE Communications Letters 2018年04月

Multipath TCP path schedulers for streaming video 査読有り

Matsufuji R., Cavendish D., Kumazoe K., Nobayashi D., Ikenaga T.

2017 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, PACRIM 2017 - Proceedings 2017-January 1 - 6 2017年11月

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2017 IEEE. Modern internet traffic is heavily composed of some form of video communication. In addition, video streaming is slowly replacing regular phone connections. Given that most video transport utilizes Video over Hypertext Transfer Protocol/Transmission Control Protocol (HTTP/TCP), it is important to understand TCP performance in transporting video streams. Recently, multipath transport protocols have allowed video streaming over multiple paths to become a reality. In this paper, we investigate packet scheduling disciplines for injecting video stream packets into multiple paths at the video server. We study video streaming performance when subjected to these schedulers in conjunction with various TCP variants. We utilize network performance measures, as well as video quality metrics, to characterize the performance and interactions between network and application layers of video streams for various network scenarios.

DOI： 10.1109/PACRIM.2017.8121920

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85043452797&origin=inward

Performance Evaluation of 920 MHz band communication for underground infrastructure monitoring

Yuri Fujisaki, Daiki Nobayashi, Kazuya Tsukamoto, Takeshi Ikenaga

Technical Report of IEICE 2017年10月

VANET based Effective Data Transmission Control for Spatio-Temporal Data Retention System

Hiroki Teshiba, Daiki Nobayashi, Kazuya Tsukamoto, Takeshi Ikenaga

Technical Report of IEICE 2017年10月

Multipath TCP Packet Scheduling for Streaming Video 査読有り

Ryota Matsufuji, Dirceu Cavendish, Kazumi Kumazoe, Daiki Nobayashi, Takeshi Ikenaga

The Nineth International Conference on Evolving Internet (INTERNET 2017) 2017年07月

Field tests and indoor emulation of Real-Spatial Information Based Group Communication 査読有り

Nagata A., Nakamura K., Fuji H., Nobayashi D., Tsukamoto K., Ikenaga T.

2017 IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2017 66 - 67 2017年05月

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2017 IEEE. We proposed a novel scheme that combines information exchange and user social activities in real-time so that users can integrate their communications seamlessly with their daily lives. Called the Real-Spatial Information-Based Group Communication (r-Space) system, this scheme creates r-Space groups by considering personal and location information and enables users to share information within those groups. We developed a prototype system consisted of client application and control server and then conducted a field experiment in Nov. 2016. In PerCom 2017, the introduction of the experiment and its live demonstration will be exhibited.

DOI： 10.1109/PERCOMW.2017.7917524

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85019969814&origin=inward

Adaptive Data Transmission Control for Reliable and Efficient Spatio-Temporal 査読有り

Hiroki Teshiba, Daiki Nobayashi, Kazuya Tsukamoto, Takeshi Ikenaga

The Sixteenth International Conference on Networks (ICN2017) 2017年04月

Reliable Data Delivery Scheme for Real-Spatial Information Based Group Communication 査読有り

Daiki Nobayashi, Masaya Mitsuishi, Takeshi Ikenaga, Akira Nagata, Katsuichi Nakamura

IEICE Communications Express 6 ( 6 ) 393 - 398 2017年03月

Performance Characterization of Streaming Video over Multipath TCP 査読有り

Ryota Matsufuji, Dirceu Cavendish, Kazumi Kumazoe, Daiki Nobayashi, Takeshi Ikenaga, Yuji Oie

The Eighth International Conference on Evolving Internet (INTERNET 2016) 2016年11月

ROD無線LANにおける消費電力削減のための代理応答手法査読有り

野林大起, 福田豊, 池永全志

電子情報通信学会和文論文誌B J99-B ( 10 ) 908 - 910 2016年10月

Regional infohubs by vehicles: Balancing spatio-temporal coverage and network load 査読有り

Higuchi T., Onishi R., Altintas O., Nobayashi D., Ikenaga T., Tsukamoto K.

IoV-VoI 2016 - Proceedings of the 1st MobiHoc International Workshop on Internet of Vehicles and Vehicles of Internet 25 - 30 2016年07月

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2016 ACM. The growing ubiquity of on-board wireless communication devices in vehicles is steadily opening up new possibilities of vehicular networks. In this paper, we design a framework to utilize radio-equipped cars as regional information hubs, which periodically disseminate public regional information (e.g., advertisements, travel tips, emergency info, etc.) over a designated geographical area in a city. The cars driving in the designated area repeatedly broadcast the data messages, allowing other drivers and pedestrians to passively obtain the information with their on-board wireless devices and/or smartphones. Although the idea follows a natural extension of the current capability of vehicular networks, vehicle densities in urban areas are typically highly non-uniform both in time and space, making it difficult to robustly disseminate data messages with minimal network load. We tackle this issue by introducing a probabilistic framework to intelligently adapt message dissemination strategy. Analyzing location broadcast messages, which are periodically exchanged among vehicles for safety applications, our protocol predicts future locations of neighboring radio-equipped vehicles and dynamically adjusts probability of message transmissions at each moment to suppress redundant network traffic. Simulation results show that our protocol can reduce the total amount of redundant message transmissions by up to 78%, while maintaining the spatio-temporal coverage of message dissemination.

DOI： 10.1145/2938681.2938688

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84979762833&origin=inward

Radio on Demand Networks 技術による無線アクセスネットワークの省電力化招待有り査読有り

池永全志, 四方博之, 長谷川晃朗, 阿部憲一, 野林大起, 伊藤哲也

電子情報通信学会和文論文誌B J99-B ( 4 ) 261 - 274 2016年04月

Adaptive contention window control scheme for dense IEEE802.11 wireless LANs 査読有り

Ito R., Nobayashi D., Ikenaga T.

IEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings 2015-November 326 - 331 2015年11月

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2015 IEEE. As portable information devices with a wireless local area network (LAN) interfaces, such as smartphones and tablet computers, become increasingly widespread, high station density and accompanying severe area throughput degradation are becoming more commonplace. One factor related to this situation is that the initial minimum contention windows size (CWmin) value in current Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) systems is set too low for the number of accessing stations. Because small CWmin values are unsuitable for high station densities, frame collisions become more commonplace and per-station communication performance decreases. In this paper, we assume that numerous stations are connected to a single access point (AP) and propose a media access control method for high station density network. In our proposed method, the AP periodically measures channel utilization and the number of stations that are transmitting frames to the AP, and then modifies the CWmin value based on these parameters. The AP then uses a beacon signal to inform the stations accessing the network of the new CWmin value. To verify the performance of our scheme, QualNet network simulations were performed, the results of which show us that, in terms of throughput, our proposed method outperforms conventional CSMA/CA schemes in wireless LAN environments with high station densities.

DOI： 10.1109/PACRIM.2015.7334856

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84958757333&origin=inward

Performance evaluation of multi-hop communication with a dynamic channel switching scheme in ROD-SAN 査読有り

Hidaka T., Nobayashi D., Fukuda Y., Tsukamoto K., Ikenaga T.

IEEE Pacific RIM Conference on Communications, Computers, and Signal Processing - Proceedings 2015-November 332 - 337 2015年11月

担当区分：責任著者記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

© 2015 IEEE. Wireless sensor and actuator networks (WSANs) are expected to be come fundamental technologies supporting machine-to-machine (M2M) communication and the internet of things (IoT). However, wireless sensors face inherent limitations because they must provide high demand response (DR) despite severely limited battery power. In an effort to achieve both power-saving characteristics in addition to high DR, we are working on research and development of radio-on-demand sensor and actuator networks (ROD-SANs), in which each node is equipped with a wake-up receiver that allows all nodes to stay in sleep mode most of the time, and transmit only after a wake-up signal is received. Since the wake-up signal can also include channel information, the sender nodes can direct the receiver nodes to switch communication channels when needed. However, as the number of nodes using the same channel increases, packet collisions occur more frequently, thereby degrading response performance. On the other hand, frequent channel switching inevitably increases channel switching delays. To simultaneously reduce both packet collisions and channel switching delays, we have extended the average-channel-utilization-based channel switching (ACS) scheme, discussed in our previous work on single-hop communication in a way that allows it to provide efficient performance in multi-hop communication. In this paper, based on simulations, we show how our scheme can improve the delivery ratio performance by approximately 20%.

DOI： 10.1109/PACRIM.2015.7334857

Scopus

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84958757392&origin=inward

On Demand Routing Scheme for Real-Spatial Information based Group Communication 査読有り

Masaya Mitsuishi, Daiki Nobayashi, Takeshi Ikenaga, Yuji Oie, Hiroshi Ishinishi, Akira Nagata, Katsuichi Nakamura

Proc. on IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM) 2015 2015年08月

Transmission Channel Switching Based on Channel Utilization in ROD-SAN 査読有り

Takeo Hidaka, Daiki Nobayashi, Yutaka Fukuda, Kazuya Tsukamoto, Takeshi Ikenaga

Future Network System and Security, Springer International Publishing 129 - 138 2015年06月

A Self-adaptive Reliable Packet Transmission Scheme for Wireless Mesh Networks (共著) 査読有り

Shi Wenze, Takeshi Ikenaga, Daiki Nobayashi, Xinchun Yin, and Hui Xu

Proc. of The 5th International Workshop on Wireless Networks and Multimedia (WNM-2014) 2014年08月

Reliable Transmission with Multipath and Redundancy for Wireless Mesh Networks (共著) 査読有り

Shi Wenze, Takeshi Ikenaga, Daiki Nobayashi, Xinchun Yin, and Hui Xu

Proc. of The 5th International Workshop on Wireless Networks and Multimedia (WNM-2014) 2014年08月

Expiration Timer Control Method for QoS-aware Packet Chunking (共著) 査読有り

Hiroki Yanaga, Daiki Nobayashi, Takeshi Ikenaga

Proc. of The 38th Annual International Computers, Software & Applications Conference 638 - 639 2014年07月

Station Reassociation Scheme for Wireless Green Networking (共著) 査読有り

Kazumi Kumazoe, Daiki Nobayashi, Yutaka Fukuda, Takeshi Ikenaga

Proc. of International Workshop on Wireless Networks and Energy Saving Techniques (WNTEST) 2014年06月

　前のページ - 次のページ　

<野林 大起>

論文 - 野林 大起

<野林　大起>

論文 - 野林　大起