Ryota OKUMURA


Feasibility Study of Wi-SUN JUTA Profile-Compliant F-RIT Protocol
Ryota OKUMURA Keiichi MIZUTANI Hiroshi HARADA 
Publication:   
Publication Date: 2021/10/01
Vol. E104-B  No. 10  pp. 1354-1365
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
Wi-SUNJUTA profileIEEE 802.15.4RITMAC protocol
 Summary | Full Text:PDF(2.6MB)

Efficient Polling Communications for Multi-Hop Networks Based on Receiver-Initiated MAC Protocol
Ryota OKUMURA Keiichi MIZUTANI Hiroshi HARADA 
Publication:   
Publication Date: 2021/05/01
Vol. E104-B  No. 5  pp. 550-562
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
Wi-SUNF-RITmulti-hoppollingrouting
 Summary | Full Text:PDF(1.7MB)

Enhanced F-RIT Protocol for Wireless Smart Utility Networks with High Traffic Bi-Directional Communications
Ryota OKUMURA Jun FUJIWARA Keiichi MIZUTANI Hiroshi HARADA 
Publication:   
Publication Date: 2018/12/01
Vol. E101-B  No. 12  pp. 2487-2497
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
Wi-SUNIEEE 802.15.4eRITF-RITenhanced F-RIT (eF-RIT)MAC protocol
 Summary | Full Text:PDF(3MB)

IEEE 802.15.4g Based Wi-SUN Communication Systems
Hiroshi HARADA Keiichi MIZUTANI Jun FUJIWARA Kentaro MOCHIZUKI Kentaro OBATA Ryota OKUMURA 
Publication:   
Publication Date: 2017/07/01
Vol. E100-B  No. 7  pp. 1032-1043
Type of Manuscript:  INVITED PAPER (Special Section on Smart Radio and Its Applications in Conjunction with Main Topics of SmartCom)
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
IEEE 802.15.4gWi-SUNmobile communicationsensor networksmart utility network
 Summary | Full Text:PDF(4.5MB)