Adaptive Array Antenna Systems with Machine Learning Based Image Recognitions for Vehicular Delay Tolerant Networking

2017 ◽  
pp. 534-541
Author(s):  
Noriki Uchida ◽  
Tomoyuki Ishida ◽  
Yoshitaka Shibata
Keyword(s):  
Machine Learning ◽  
Array Antenna ◽  
Adaptive Array ◽  
Delay Tolerant Networking ◽  
Delay Tolerant ◽  
Antenna Systems

scholarly journals Vehicular Delay-Tolerant Networks with Image Recognition-Based Adaptive Array Antenna for Winter Road Surveillance in Local Areas

2019 ◽  
Vol 11 (9) ◽  
pp. 203
Author(s):  
Uchida ◽  
Sato ◽  
Shibata
Keyword(s):  
Image Recognition ◽  
Surveillance System ◽  
Delay Tolerant Networks ◽  
Array Antenna ◽  
Future Research ◽  
Adaptive Array ◽  
Prototype System ◽  
Intelligent Transport System ◽  
Winter Road ◽  
Delay Tolerant

The rapid growth of the ITS (intelligent transport system) development requires us to realize new kinds of applications, such as the winter road surveillance system. However, it is still necessary to consider the network difficulty areas for LTE (long-term evolution) or 3G transmissions when one visits sightseeing spots such as ski resorts or spas in mountain areas. Therefore, this paper proposes a winter road surveillance system in the local area based on vehicular delay-tolerant networks. The adaptive array antenna controlled by image recognition with the Kalman filter algorithm is proposed as well to the system in order to realize higher delivery rates. The implementations of the prototype system are presented in this paper as well, and the effectivity of the radio transmission in the prototype system is realized by vehicular image recognition methods and the asynchronous voltage controls for antenna elements for the rapid directional controls of the radio transmission. The experimental results showed that the radio directional controls by the prototype system for the target vehicle can proceed within one second, and that the simulation with the GIS (geographic information system) map pointed out the delivery rates of the proposed method—which are better than those of the epidemic DTN (delay-tolerant networking) routing by the nondirectional antenna. The experiments of the proposed methods indicate a higher efficiency of the data transmissions—even in the mountain area. Furthermore, future research subjects are discussed in this paper.

scholarly journals An Efficient Routing Protocol with Overload Control for Group Mobility in Delay-Tolerant Networking

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 521
Author(s):  
Min Wook Kang ◽  
Yun Won Chung
Keyword(s):  
Routing Protocol ◽  
Overload Control ◽  
Group Mobility ◽  
Movement Model ◽  
Delay Tolerant Networking ◽  
Group Movement ◽  
Dtn Routing ◽  
Military Networks ◽  
Delay Tolerant ◽  
Stable Routing

In delay-tolerant networking (DTN), messages are delivered to destination nodes by using opportunistic contacts between contact nodes, even if stable routing paths from source nodes to destination nodes do not exist. In some DTN network environments, such as military networks, nodes movement follows a group movement model, and an efficient DTN routing protocol is required to use the characteristics of group mobility. In this paper, we consider a network environment, where both intra- and intergroup routing are carried out by using DTN protocols. Then, we propose an efficient routing protocol with overload control for group mobility, where delivery predictability for group mobility is defined and proactive overload control is applied. Performance evaluation results show that the proposed protocol had better delivery ratios and overhead ratios than compared protocols, although the delivery latency was increased.

Spatial Ambiguity and Resolution for Array Antenna Systems

1965 ◽  
Vol 9 (3) ◽  
pp. 229-237 ◽  
Author(s):  
J. V. DiFranco ◽  
W. L. Rubin
Keyword(s):  
Array Antenna ◽  
Antenna Systems
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