Autor: Yamazaki, Taku - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Adaptive Load Balancing Ad Hoc Routing Scheme Inspired by True Slime Mold
Autorzy:: Katada, Hiroshi
Yamazaki, Taku
Miyoshi, Takumi
Powiązania:: https://bibliotekanauki.pl/articles/309453.pdf
Data publikacji:: 2019
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: adaptive ad hoc routing
ad hoc network
engineering neo biomimetic
physarum solver
true slime mold
Opis:: Engineering neo-biomimetics, i.e. imitation models based on body structures and behavior of living organisms, relied upon to solve complex problems, have been studied in various ﬁelds. In distributed networks, such as ad-hoc networks and wireless sensor networks, the behavior of a variety of true slime molds which are capable of constructing multipath ﬂow networks based on the amount of body, has been studied. Ad hoc networks only consist of mobile terminals (nodes) that can relay packets along an established route. However, link relations and the available bandwidth of the nodes change dynamically due to the mobility of nodes. In addition, the speed of communication between nodes also varies due to node positions and their communication-related quality. Thus, practical use of ad-hoc networks still remains an issue, because it is diﬃcult to establish stable routes under such environments. This study aims to propose an adaptive load balancing routing technique that adaptively diversiﬁes the transmission paths based on the available bandwidth, residual battery life, and the data transmission volume, by applying a mathematical model of slime mold routing, known as the physarum solver. We conﬁrm the eﬀectiveness of its adaptive behavior in dynamic environments using computer simulations.
Źródło:: Journal of Telecommunications and Information Technology; 2019, 1; 14-22
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: ACO-Inspired Energy-Aware Routing Algorithm for Wireless Sensor Networks
Autorzy:: Yamamoto, Ryo
Nishibu, Seira
Yamazaki, Taku
Okamura, Yasushi
Tanaka, Yoshiaki
Powiązania:: https://bibliotekanauki.pl/articles/308447.pdf
Data publikacji:: 2019
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: ant colony optimization
loadbalancing
routing algorithm
sensor networks
Opis:: Multi-hop networks, such as WSNs, become an object of increasing attention as an emerging technology which plays an important role for practical IoT applications. These multi-hop networks generally consist of mobile and small terminals with limited resources, which makes them vulnerable to various network status changes. Moreover, the limited nature of terminal resources available, especially in terms of battery capacity, is one of the most important issues to be addressed in order to prolong their operating time. In order to ensure eﬃcient communications in such networks, much research has already been conducted, especially in the ﬁeld of routing and transmission technologies. However, conventional approaches adopted in the routing ﬁeld still suﬀer from the so-called energy hole problem, usually caused by unbalanced communication loads existing due to diﬃculties in adaptive route management. To address this issue, the present paper proposes a novel routing algorithm that utilizes ACO-inspired routing based on residual energy of terminals. Operational evaluation reveals its potential to ensure balanced energy consumption and to boost network performance.
Źródło:: Journal of Telecommunications and Information Technology; 2019, 1; 5-13
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: LoCO: Local Cooperative Data Oﬄoading System Based on Location Information
Autorzy:: Yamazaki, Taku
Asano, Kazuma
Arai, Satoshi
Shimomura, Yusuke
Miyoshi, Takumi
Powiązania:: https://bibliotekanauki.pl/articles/308602.pdf
Data publikacji:: 2019
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: cooperative offloading
distributed download
load balance
load reduction
location information
peer-to-peer
Opis:: The development of high speed mobile networks and the widespread use of smartphones have enabled users to easily obtain large data volumes via the Internet. This causes a heavy consumption of network resources, a burden on the available bandwidth. To solve such problems, a data oﬄoading method with a wireless LAN access point has been used to distribute traﬃc from mobile to ﬁxed networks. However, the method using wireless LAN access points can only change the communication paths but cannot reduce the overall traﬃc. This paper proposes a local cooperative data ofﬂoading system (LoCO) that reduces the overall traﬃc by sharing data, with direct communication between neighbors based on their location-related information. Moreover, the authors implemented the LoCO system on Android smartphones and clariﬁed its performance in comparison with a traditional client/server system through experiments to download data in a real-world environment.
Źródło:: Journal of Telecommunications and Information Technology; 2019, 1; 67-75
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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