default search action
Google
Google Scholar
Semantic Scholar
Internet Archive Scholar
CiteSeerX
ORCIDHirotaka Ujikawa
Person information
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
2020 – today
- 2024
[j16]Hirotaka Ujikawa
, Yuka Okamoto, Takumi Harada, Tatsuya Shimada, Tomoaki Yoshida:
Real-time optical-wireless cooperative switching on wireless quality degradation for end-to-end video delay guarantee. J. Opt. Commun. Netw. 16(10): 981-989 (2024)- [j15]Kenji Miyamoto, Hirotaka Ujikawa, Tatsuya Shimada, Tomoaki Yoshida:
User-dedicated optical path switching with optical-wireless cooperative control for low-latency and seamless handover. J. Opt. Commun. Netw. 16(10): 1050-1058 (2024) - [c17]Yuka Okamoto, Hirotaka Ujikawa, Kota Asaka, Tatsuya Shimada, Tomoaki Yoshida:
Proactive congestion control within 1-ms delay at mobile midhaul utilizing parallel traffic prediction and fast switchover of CU and optical path. OFC 2024: 1-3
2010 – 2019
- 2019
- [j14]Kota Asaka, Hirotaka Ujikawa, Hiroyuki Uzawa, Hirotaka Nakamura, Jun-ichi Kani, Akihiro Otaka, Jun Terada:
Disaggregation of Time-Critical Applications in Flexible Access System Architecture [Invited]. JOCN 11(1): A33-A39 (2019) - [c16]Takumi Harada, Takashi Yamada, Hirotaka Ujikawa, Hiroyuki Uzawa, Junichi Kani, Jun Terada:
In-Service Software Updating without Packet Loss for a Time-Critical Function on Optical Access Network System. OFC 2019: 1-3 - 2018
- [c15]Kota Asaka, Hirotaka Ujikawa, Junichi Kani, Akihiro Otaka:
Flexible Access System Architecture (FASA). OFC 2018: 1-3 - 2017
- [c14]Junichi Kani, Manabu Yoshino, Toshikiyo Tanaka, Kota Asaka, Hirotaka Ujikawa, Ken-Ichi Suzuki, Akihiro Otaka:
Flexible Access System Architecture to Support Diverse Requirements and Agile Service Creation. ECOC 2017: 1-3 - [c13]Yu Nakayama, Hiroyuki Uzawa, Daisuke Hisano, Hirotaka Ujikawa, Hirotaka Nakamura, Jun Terada, Akihiro Otaka:
Efficient DWBA Algorithm for TWDM-PON with Mobile Fronthaul in 5G Networks. GLOBECOM 2017: 1-6 - [c12]Takumi Harada, Hirotaka Ujikawa, Manabu Yoshino, Noriyuki Oota, Ken-Ichi Suzuki, Akihiro Otaka:
Dynamic software updating of OLTs without service interruption. SoftCOM 2017: 1-5 - 2016
- [j13]Jiajia Liu, Hongzhi Guo, Hiroki Nishiyama, Hirotaka Ujikawa, Ken-Ichi Suzuki, Nei Kato:
New Perspectives on Future Smart FiWi Networks: Scalability, Reliability, and Energy Efficiency. IEEE Commun. Surv. Tutorials 18(2): 1045-1072 (2016) - [j12]Hirotaka Ujikawa, Takashi Yamada, Ken-Ichi Suzuki, Akihiro Otaka, Hiroki Nishiyama, Nei Kato:
Stand-Alone and Cooperative Deep Sleep for Battery-Driven Optical Network Unit. IEEE Internet Things J. 3(4): 494-502 (2016) - [j11]Hirotaka Ujikawa, Ken-Ichi Suzuki, Akihiro Otaka, Hiroki Nishiyama, Nei Kato:
Energy-Efficient Service Multiplexing on Profile-Based TWDM Access Systems. IEEE Internet Things J. 3(6): 1427-1436 (2016) - [j10]Jiajia Liu, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
Device-to-Device Communication for Mobile Multimedia in Emerging 5G Networks. ACM Trans. Multim. Comput. Commun. Appl. 12(5s): 75:1-75:20 (2016) - [c11]Katsuya Suto, Tiago Gama Rodrigues, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
QoE-Guaranteed and Sustainable User Position Guidance for Post-Disaster Cloud Radio Access Network. GLOBECOM 2016: 1-6 - 2015
- [j9]Hiroshi Ou, Yoshihito Sakai, Hirotaka Ujikawa, Takuya Tsutsumi, Toshihito Fujiwara, Yasutaka Kimura, Takeshi Sakamoto, H. Suzuki, Jun Terada, Akihiro Otaka:
Integrated Dynamic Bandwidth Allocation for Low Buffer Aggregated Passive Optical Network Systems. JOCN 7(8): 814-824 (2015) - [j8]Jiajia Liu, Shangwei Zhang, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
Device-to-device communications for enhancing quality of experience in software defined multi-tier LTE-A networks. IEEE Netw. 29(4): 46-52 (2015) - [j7]Katsuya Suto, Keisuke Miyanabe, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
QoE-Guaranteed and Power-Efficient Network Operation for Cloud Radio Access Network With Power Over Fiber. IEEE Trans. Comput. Soc. Syst. 2(4): 127-136 (2015) - [j6]Keisuke Miyanabe, Katsuya Suto, Zubair Md. Fadlullah, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
A cloud radio access network with power over fiber toward 5G networks: QoE-guaranteed design and operation. IEEE Wirel. Commun. 22(4): 58-64 (2015) - [j5]Kei Saito, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
A MPCP-Based Centralized Rate Control Method for Mobile Stations in FiWi Access Networks. IEEE Wirel. Commun. Lett. 4(2): 205-208 (2015) - [c10]Shangwei Zhang, Jiajia Liu, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
Average rate analysis for a D2D overlaying two-tier downlink cellular network. ICC 2015: 3376-3381 - [c9]Yunseong Lee, Katsuya Suto, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki:
A novel network design and operation for reducing transmission power in cloud radio access network with power over fiber. ICCC 2015: 1-5 - 2014
- [c8]Hiroko Nomura, Hiroyuki Uzawa, Yuki Arikawa, Yukikuni Nishida, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto:
Coordinating energy-efficient CPEs on IEEE 1904.1 compliant systems Via ONU for enhanced power savings: Proposal and demonstration. ICC 2014: 4294-4299 - [c7]Keisuke Miyanabe, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto:
Synchronized Power Saving Mechanisms for Battery-Powered Mobile Terminals in Smart FiWi Networks. VTC Fall 2014: 1-5 - 2013
- [j4]Zubair Md. Fadlullah, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto:
Smart FiWi Networks: Challenges and Solutions for QoS and Green Communications. IEEE Intell. Syst. 28(2): 86-91 (2013) - [j3]Zubair Md. Fadlullah, Hiroki Nishiyama, Yuichi Kawamoto, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto:
Cooperative QoS Control Scheme Based on Scheduling Information in FiWi Access Network. IEEE Trans. Emerg. Top. Comput. 1(2): 375-383 (2013) - [j2]Ko Togashi, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto:
Cross Layer Analysis on ONU Energy Consumption in Smart FiWi Networks. IEEE Wirel. Commun. Lett. 2(6): 695-698 (2013) - [c6]Hirotaka Ujikawa, Takashi Yamada, Naoto Yoshimoto:
Demonstration of timer-based ONU deep sleep for emergency communication during power failure. GLOBECOM 2013: 2413-2417 - [c5]Ko Togashi, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto:
On the effect of cooperation between power saving mechanisms in WLANs and PONs. ICC 2013: 6225-6229 - 2012
- [c4]Hiroko Nomura, Susumu Nishihara, Hirotaka Ujikawa, Masashi Tadokoro, Takashi Yamada, Naoto Yoshimoto:
ONU sleep control by HGW considering users' traffic distribution for energy-aware access networks. APCC 2012: 486-491 - [c3]Ryogo Kubo, Masashi Tadokoro, Hiroko Nomura, Hirotaka Ujikawa, Susumu Nishihara, Ken-Ichi Suzuki, Naoto Yoshimoto:
Bandwidth scheduling techniques in TDM-PON supporting inter-ONU communication with network coding for smart grid applications. ICC 2012: 3206-3211 - [c2]Kenta Suzuki, Hiroki Nishiyama, Nei Kato, Hirotaka Ujikawa, Ken-Ichi Suzuki, Naoto Yoshimoto:
A bandwidth allocation method to improve user QoS satisfaction without decreasing system throughput in wireless access networks. PIMRC 2012: 1430-1435 - 2011
- [c1]Hirotaka Ujikawa, Takeshi Sakamoto, Naoto Yoshimoto, Hisaya Hadama:
Multilevel dynamic bandwidth allocation using buffer observation for cousin-fair access systems. APCC 2011: 218-223 - 2010
- [j1]Ryogo Kubo, Jun-ichi Kani, Hirotaka Ujikawa, Takeshi Sakamoto, Yukihiro Fujimoto, Naoto Yoshimoto, Hisaya Hadama:
Study and Demonstration of Sleep and Adaptive Link Rate Control Mechanisms for Energy Efficient 10G-EPON. JOCN 2(9): 716-729 (2010)
Coauthor Index
manage site settings
To protect your privacy, all features that rely on external API calls from your browser are turned off by default. You need to opt-in for them to become active. All settings here will be stored as cookies with your web browser. For more information see our F.A.Q.
Unpaywalled article links
Add open access links from 
to the list of external document links (if available).
Privacy notice: By enabling the option above, your browser will contact the API of unpaywall.org to load hyperlinks to open access articles. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Unpaywall privacy policy.
Archived links via Wayback Machine
For web page which are no longer available, try to retrieve content from the 
of the Internet Archive (if available).
Privacy notice: By enabling the option above, your browser will contact the API of archive.org to check for archived content of web pages that are no longer available. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Internet Archive privacy policy.
Reference lists
Add a list of references from 
, 
, and 
to record detail pages.
load references from crossref.org and opencitations.net
Privacy notice: By enabling the option above, your browser will contact the APIs of crossref.org, opencitations.net, and semanticscholar.org to load article reference information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the Crossref privacy policy and the OpenCitations privacy policy, as well as the AI2 Privacy Policy covering Semantic Scholar.
Citation data
Add a list of citing articles from and to record detail pages.
load citations from opencitations.net
Privacy notice: By enabling the option above, your browser will contact the API of opencitations.net and semanticscholar.org to load citation information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the OpenCitations privacy policy as well as the AI2 Privacy Policy covering Semantic Scholar.
OpenAlex data
Load additional information about publications from 
.
Privacy notice: By enabling the option above, your browser will contact the API of openalex.org to load additional information. Although we do not have any reason to believe that your call will be tracked, we do not have any control over how the remote server uses your data. So please proceed with care and consider checking the information given by OpenAlex.
last updated on 2024-10-23 20:34 CEST by the dblp team
all metadata released as open data under CC0 1.0 license
see also: Terms of Use | Privacy Policy | Imprint
dblp was originally created in 1993 at:
since 2018, dblp has been operated and maintained by:
the dblp computer science bibliography is funded and supported by:
