Misc - MIYAMOTO Shinichi

Periodic Notification of NAV using Leaky Coaxial Cable for Establishment of Virtual Private Channel in WLAN System

淵辺 悠太, 宮本 伸一

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 ( 電子情報通信学会 )  117 ( 178 ) 7 - 12   2017.08

A Study on application of One Time Pad to enhance information secrecy in wireless distributed transmission

鄒 京博, 山中 仁昭, 大野 修一, 宮本 伸一, 三瓶 政一

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 ( 電子情報通信学会 )  116 ( 395 ) 81 - 86   2017.01

Access Point Allocation Scheme for Milli-meter Wave Wireless Local Area Network based on User Trajectory Prediction

棟田 淳哉, 宮本 伸一, 三瓶 政一

電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 ( 電子情報通信学会 )  115 ( 472 ) 333 - 338   2016.03

B-5-126 A Study on Access Point Allocation Scheme for Milli-meter Wave Wireless Local Area Network based on Estimated Trajectory of Users

MUNETA Junya, MIYAMOTO Shinichi, SAMPEI Seiichi

Proceedings of the IEICE General Conference ( The Institute of Electronics, Information and Communication Engineers )  2016 ( 1 ) 519 - 519   2016.03

B-5-161 A Study on Secure Transmission Capacity of Distributed Transmission in Wireless Space

Zou Jingbo, Yamanaka Masaaki, Ohno Shuichi, Miyamoto Shinichi, Sampei Seiichi

Proceedings of the IEICE General Conference ( The Institute of Electronics, Information and Communication Engineers )  2016 ( 1 ) 554 - 554   2016.03

B-5-122 A Study on Interference Elimination Strategy for Bluetooth LE Communication using Medium Reservation Scheme in Wireless LAN Systems

YAMABE Kazuaki, SAMPEI Seiichi, MIYAMOTO Shinichi

Proceedings of the IEICE General Conference ( The Institute of Electronics, Information and Communication Engineers )  2016 ( 1 ) 515 - 515   2016.03

B-5-167 A Study on Transmission Power of NAV Frames from Spatially Distributed Stations for Establishment of Virtual Private Channel in WLAN System

Miyamoto Shinichi, OMAE Atsushi, SAMPEI Seiichi

Proceedings of the IEICE General Conference ( The Institute of Electronics, Information and Communication Engineers )  2016 ( 1 ) 560 - 560   2016.03

B-5-87 Dual-band MAC Protocol for AP Coordinated Millimeter-wave WLAN Using Microwave Control Channel

KAWAHARA Masashi, MIYAMOTO Shinichi, SAMPEI Seiichi

Proceedings of the Society Conference of IEICE ( The Institute of Electronics, Information and Communication Engineers )  2015 ( 1 ) 349 - 349   2015.08

B-5-146 A Study on Periodic Notification of NAV from Spatially Distributed Stations for Establislment of Virtual Private Channel in WLAN System

OMAE Atsushi, MIYAMOTO Shinichi, SAMPEI Seiichi

Proceedings of the IEICE General Conference ( The Institute of Electronics, Information and Communication Engineers )  2015 ( 1 ) 501 - 501   2015.02

B-5-153 A Study on Beamforming Training Interval for Supporting Low-Speed Mobile Station in Access Point Coordinated Millimeter-Wave WLAN Systems

MIYAZAKI Shinya, MIYAMOTO Shinichi, SAKAGUCHI Kei, SAMPEI Seiichi

Proceedings of the IEICE General Conference ( The Institute of Electronics, Information and Communication Engineers )  2015 ( 1 ) 508 - 508   2015.02

A Proposal of Inter-BSS Cooperative Radio Resource Management for Centralized WLAN Systems in Overlapping BSS Environments

ENDO Takuya, MIYAMOTO Shinichi, SAMPEI Seiichi, JIANG Wenjie

Technical report of IEICE. RCS ( The Institute of Electronics, Information and Communication Engineers )  114 ( 372 ) 259 - 264   2014.12

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To enhance a throughput and satisfy quality of service (QoS) requirement of WLAN stations in overlapping basic service set (OBSS) enviroment, this paper proposes a inter-BSS cooperative radio resource management scheme. In the proposed scheme, multiple BSSs are organized into a group and share the radio resource based on a centralized control by a master AP. Master AP collects channel state information (CSI) and traffic states information (TSI) by receiving control frames from group members to adaptively allocates orthogonal frequency division multiple access (OFDMA) sub-channels to the stations. Numerical simulation results confirm that the proposed scheme can enhance throughput by dynamic resource allocation using frequency reuse and it is also effective to guarantee QoS requirement by avoiding inter-BSS competition especially in dense BSS deployments scenario.

A Proposal of Efficient Medium Reservation Scheme for Intra-BSS Centralized WLAN Systems

MUNETA Junya, MIYAMOTO Shinichi, SAMPEI Seiichi, JIANG Wenjie

Technical report of IEICE. RCS ( The Institute of Electronics, Information and Communication Engineers )  114 ( 372 ) 253 - 258   2014.12

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To enhance the throughput of wireless local area network (WLAN) while satisfying quality of service (QoS) requirements, Intra-BSS (Intra-Basic Service Set) centralized WLAN system has been proposed. In the system, channel and traffic state information (CTSI) of all associated stations are gathered at the access point (AP) by exchanging request-to-send (RTS) / clear-to-send (CTS) frames between AP and all associated stations, and the AP dynamically allocates reserved radio resource to the active stations based on their CTSI. However, since the exchanges of RTS/CTS frames are originally used for the reservation of radio resource, these frames should be transmitted with the lowest transmission rate, and the exchanges of RTS/CTS frames between AP and all associated stations incurs signaling overhead. To counter this problem, this paper proposes an efficient resource reservation scheme for intra-BSS centralized WLAN. In the proposed scheme, the AP exchanges RTS/CTS frames with a minimum number of stations required to reserve the radio resource for their exclusive use, and the other associated stations notify their CTSI using an adaptive modulation and coding (AMC) scheme. Since the period required to reserve the radio resource and gather the CTSI of all associated stations are shortened, the signaling overhead can be reduced. Numerical simulation confirms that the proposed scheme enhances the throughput of intra-BSS centralized WLAN.

B-5-106 A Study on Efficient Medium Reservation Scheme for DCF-based OFDMA WLAN Systems

MUNETA Junya, MIYAMOTO Shinichi, SAMPEI Seiichi, JIANG Wenjie

Proceedings of the Society Conference of IEICE ( The Institute of Electronics, Information and Communication Engineers )  2014 ( 1 ) 377 - 377   2014.09

B-5-107 A Study on Inter-BSS Radio Resource Management for DCF-based OFDMA WLAN Systems

ENDO Takuya, MIYAMOTO Shinichi, SAMPEI Seiichi, JIANG Wenjie

Proceedings of the Society Conference of IEICE ( The Institute of Electronics, Information and Communication Engineers )  2014 ( 1 ) 378 - 378   2014.09

Cooperative Resource Control of Millimeter Wave Wireless Access via Wi-Fi Coordinator

KUSANO Hideyuki, MAHMOUD MOHAMED MAHMOUD Ehab, SAKAGUCHI Kei, MIYAMOTO Shinichi, SAMPEI Seiichi

IEICE technical report ( The Institute of Electronics, Information and Communication Engineers )  113 ( 457 ) 145 - 150   2014.03

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This paper proposes a new network architecture and radio resource management scheme for broadband wireless access called Wi-Fi and millimeter wave integrated heterogeneous networks, in which Wi-Fi network takes on the role of coordinator in millimeter wave radio access to suppress inter-link interference as well as to create more robust link acquisition in millimeter wave radio links. Space-time scheduling scheme is used as a radio resource management in the proposed system. Numerical analysis confirms that the proposed network architecture can enhance throughput performance of the millimeter wave radio systems.

Distributed Transmission for Secure Wireless Links by Joint Transmitter-receiver Beamforming

山中 仁昭, 宮本 伸一, 三瓶 政一

情報処理学会論文誌   55 ( 2 ) 838 - 848   2014.02

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著者らは，プライベートな無線ネットワークにおいて第三者への情報漏洩の危険性を軽減する手法として，送信ノードから受信ノードへ至る複数のパスを選択した後，秘密分散法の考えに基づき，これらのパスへ情報を分散して伝送する手法を提案してきた．本手法では，送信ノードに搭載したアレーアンテナを用いて選択したパスの方向へ個別にビーム形成を行うことにより，無線空間内に複数の伝送路を形成し，分散伝送を実現する．本稿では，受信ノードへもアレーアンテナを搭載することにより，送信ビームと協調して受信ビームを制御する送受信ビームフォーミング法を提案するとともに，こうしたビームフォーミング法に基づく分散伝送路形成法を提案する．室内環境を模擬した計算機シミュレーションにより，提案法は少ないアンテナ素子で分散性の高い伝送路を形成でき，送信情報の秘匿性を向上させることができること，また，従来法では十分な秘匿性を確保できない見通し外環境においても有効な対策となることを確認した．The authors have proposed a secure wireless link creation scheme based on a distributed transmission by providing multiple transmission routes to a destination. In this scheme, the transmitted information is divided into pieces of "shared information" by a secret sharing method and separately sent to a destination through different transmission routes with individually controlled antenna directivities. In this paper, the authors propose a joint receiver beamforming in accordance with the transmitter antenna directivity for the distributed transmission. Computer simulations clarify that the proposed scheme can enhance the degree of spatial distribution of the transmission routes. Therefore the secrecy of the transmitted information is greatly improved through the distributed transmission in wireless spaces including non-line-of sight environment from the sender.

Wide-area Centralized Radio Resource Management for DCF-based Multi-hop Wireless Networks

MIYAMOTO Shinichi, HAYATA Naoki, SAMPEI Seiichi, JIANG Wenjie

IEICE technical report ( The Institute of Electronics, Information and Communication Engineers )  113 ( 360 ) 49 - 54   2013.12

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To enhance the end-to-end throughput of multi-hop wireless network using unlicensed spectrum, this paper proposes a distributed coordination function (DCF)-based medium access control (MAC) protocol that enables a wide area centralized radio resource management (RRM). In the proposed protocol, after the acquisition of transmission opportunity in a traditional DCF-manner, a source station attempts to forward a medium reservation advertisement (MRA) frame to a destination station. MRA forwarding enables multiple stations constituting a multi-hop network to reserve the radio resource for their exclusive use throughout multi-hop wide area. MRA forwarding is also utilized to gather channel state information (CSI) and traffic state information (TSI) of stations at the central controller that is adaptively selected among the stations. After the MRA forwarding, based on the CSI and TSI of each station, the central controller dynamically allocates the resource blocks to the appropriate stations through the opportunistic two-dimensional scheduling using OFDMA scheme. Assigned RB information is notified to stations by relaying transmission schedule advertisement (TSA) frame and the stations transmit their DATA frames on the allocated RBs. Numerical simulation confirms that the proposed protocol enhances the end-to-end throughput of multi-hop network operating at unlicensed band.

A Secure Wireless Link Creation Based on Distributed Transmission Using a Secret Sharing Method ―Positive and Negative Effects of Narrow-beam Creation

山中 仁昭, 宮本 伸一, 三瓶 政一

情報処理学会論文誌   54 ( 12 ) 2440 - 2450   2013.12

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著者らは，プライベートな無線ネットワークにおいて第三者への情報漏洩の危険性を軽減する手法として，送信ノードから受信ノードへ至る複数のパスを選択した後，秘密分散法の考えに基づき，選択したパスへ情報を分散して伝送する手法を提案してきた．提案方式では，送信ノードにアレーアンテナを搭載することを前提に，選択したパスに対して個別に鋭い指向性（狭ビーム）を形成し，これらの指向性を時間的に切り替えることにより送受信ノード間における分散伝送を実現する．本稿では，アレーアンテナのアンテナ本数を増大させ狭ビームを形成することの効果とその弊害について明らかにする．狭ビームを形成することにより，空間的な分散性を高めて情報を伝送できるため，無線ネットワーク内における情報の秘匿性を向上できると考えられる．その一方で，狭ビームを形成することにより，送受信ノード間の伝搬利得が減少するため，送信電力が増大する等の電力面における弊害が生じることが懸念される．計算機シミュレーションに基づく評価の結果，狭ビーム形成の効果として，個々の分散情報が伝達される領域の広がりを選択したパスの周囲に制限し，より分散性の高い複数の伝送路を無線空間内に形成できること，また，そのような伝送路を使用して分散伝送することにより，伝搬途中における情報漏洩の危険性を大幅に軽減できることを明らかにした．一方，その弊害として，受信ノードへの伝送品質の向上を目的としたビーム制御法と比較すると，狭ビームの度合いに比例して送信電力の増大が必要であることを明らかにした．The authors have proposed a secure wireless link creation scheme based on a distributed transmission by providing multiple numbers of separated propagation routes to a destination. In the proposed scheme, at first, narrow-beam antenna directivities are created with an array antenna installed at the transmitter. Then, the transmitted information is divided into multiple numbers of "shared information" by a secret sharing method and sent to a destination separately through the propagation routes created with the individually controlled antenna-beam directivities. In this paper, we will clarify the positive and negative effects of the narrow-beam creation. By creating a narrow beam at the transmitter, as a positive effect, each shared piece of information is concentrated along the selected paths which will enhance the dispersibility of the distributed transmission. On the other hand, as a negative effect, the transmitted power of each shared piece of information is increased due to the deterioration of the propagation gain. Computer simulations clarify that the transmission routes are formed in a separated manner along the selected path with the narrow-beam creation, so that the secrecy of the transmitted information is greatly improved with the distributed transmission. On the other hand, the transmission power should be increased to maintain a wireless link as the antenna-beam width got narrowed with the narrow-beam creation.

A Study on Wide Area Centralized RRM for DCF-based Multi-hop Ad hoc Networks

MIYAMOTO Shinichi, HAYATA Naoki, SAMPEI Seiichi, JIANG Wenjie

Proceedings of the Society Conference of IEICE ( The Institute of Electronics, Information and Communication Engineers )  2013 ( 1 ) 455 - 455   2013.09

A Study on Information Hiding Effect of Distributed Transmission by a Secret Sharing Method

Yamanaka Masaaki, Miyamoto Shinichi, Sampei Seiichi

Proceedings of the Society Conference of IEICE ( The Institute of Electronics, Information and Communication Engineers )  2013 ( 1 ) 458 - 458   2013.09