Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
RCS, NS (Joint) |
2017-12-15 10:30 |
Hiroshima |
Aster Plaza |
[Invited Lecture]
Realization of Network Slice in 5G Mobile Core Takeshi Usui, Yoshinori Kitatsuji (KDDI Research) NS2017-134 RCS2017-260 |
Recently, the research and development, and standardization regarding the 5th generation mobile network (5G) have been a... [more] |
NS2017-134 RCS2017-260 pp.43-46(NS), pp.55-58(RCS) |
NS, ASN, RCC, RCS, SR (Joint) |
2017-07-20 15:25 |
Hokkaido |
Hokkaido Univ. |
[Invited Talk]
Outlook of the fifth Generation Mobile Communication System and Mobile Core Network Operations Ryota Mizutani, Takeshi Usui, Yoshinori Kitatsuji (KDDI Research) RCC2017-39 NS2017-60 RCS2017-131 SR2017-54 ASN2017-48 |
[more] |
RCC2017-39 NS2017-60 RCS2017-131 SR2017-54 ASN2017-48 pp.145-150(RCC), pp.159-164(NS), pp.199-204(RCS), pp.157-162(SR), pp.177-182(ASN) |
ICM |
2017-03-10 18:00 |
Okinawa |
Miyakojima Marine Terminal Bldg. |
Automatic generation method of workflow utilized in verification of Openstack operation Ryota Mizutani, Takeshi Usui, Yoshinori Kitatsuji (KDDI Research, Inc.) ICM2016-71 |
[more] |
ICM2016-71 pp.105-109 |
IA |
2015-08-25 17:05 |
Tokyo |
IIJ Seminar Room (Iidabashi Grand Bloom 13F) |
A Resource Estimation Method Considering Terminals Communication Initiation Delay in Virtualized EPC Ryota Mizutani, Takeshi Usui, Takeshi Kubo, Yoshinori Kitatsuji (KDDI Lab.) IA2015-27 |
Due to the high usability of smartphones, various applications running in the smartphones are rapidly increase. Although... [more] |
IA2015-27 pp.47-52 |
IN, NV (Joint) |
2015-07-17 17:00 |
Hokkaido |
Hokkaido University |
On Resource Estimation Method Preventing Degradation of Waiting Time of User in Virtualized EPC Ryota Mizutani, Takeshi Usui, Yoshinori Kitatsuji (KDDI Lab) IN2015-38 |
As Long Term Evolution (LTE) develops, mobile devices start to use various kinds of the applications. Nowadays, the burs... [more] |
IN2015-38 pp.91-96 |
ICM |
2015-03-20 14:50 |
Okinawa |
Ishigaki-City-Hall |
[Encouragement Talk]
Proposal and Evaluation of Redirect Process for Congestion Tolerance of EPC Signaling by Using Network Function Virtualization Takeshi Usui, Yujin Noishiki, Takeshi Hashimoto, Yoshinori Kitatsuji (KDDI Lab) ICM2014-72 |
Virtualized functions of EPC(Evolved Packet Core) which is mobility management system in LTE(Long Term Evolution) have b... [more] |
ICM2014-72 pp.109-114 |
ICM |
2014-03-14 16:00 |
Okinawa |
|
Congestion Control of EPC Signaling by Using Network Function Virtualization Takeshi Usui, Yujin Noishiki, Takeshi Hashimoto, Yoshinori Kitatsuji (KDDI Labo) ICM2013-75 |
(To be available after the conference date) [more] |
ICM2013-75 pp.137-142 |
IA, SITE, IPSJ-IOT [detail] |
2013-03-14 17:15 |
Nara |
Todaiji Total Cultural Center |
A Server Configuration with Autonomous Session State Migration to Demand Fluctuation Takeshi Usui, Masahiro Jibiki (NICT), Yusuke Sakumoto (Tokyo Metropolitan Univ.), Chisa Takano (Hiroshima City Univ.), Masaki Aida (Tokyo Metropolitan Univ.), Nozomu Nishinaga (NICT) SITE2012-60 IA2012-98 |
Optimal server consolidation is attracting attention for energy saving. The service access increases or decreases in num... [more] |
SITE2012-60 IA2012-98 pp.133-138 |
NS, IN (Joint) |
2013-03-08 10:00 |
Okinawa |
Okinawa Zanpamisaki Royal Hotel |
Predictive Discarding of Registration for Fast Recovery of IMS-based Services Takeshi Usui (NICT), Kohei Sugiyama, Atsushi Tagami (KDDI Lab), Nozomu Nishinaga (NICT) NS2012-277 |
This paper proposes a method for fast reovery of IP Multimedia Subsystem (IMS) –based services, when the network c... [more] |
NS2012-277 pp.651-656 |
IA, SITE, IPSJ-IOT [detail] |
2012-03-15 16:45 |
Hokkaido |
Hokkaido Univ. |
Design and Implementation of Service Mobility Middleware with Session State Migration Takeshi Usui (NICT), Yoshinori Kitatsuji (KDDI Labs), Kiyohide Nakauchi, Yozo Shoji (NICT), Hidetoshi Yokota (KDDI Labs), Nozomu Nishinaga (NICT) SITE2011-41 IA2011-91 |
We propose a service mobility architecture enabling network service providers (NSPs) to switch a server to which user eq... [more] |
SITE2011-41 IA2011-91 pp.119-124 |
MoNA, IPSJ-MBL, IPSJ-DPS |
2011-06-03 09:50 |
Okayama |
Osaka Univ. 50th Anniversary Hall |
A Design of Service Mobility Architecture with Session State Migration Takeshi Usui, Kiyohide Nakauchi (NICT), Yoshinori Kitatsuji, Hidetoshi Yokota (KDDI Lab) MoMuC2011-8 |
While heterogeneous wireless access environments (e.g., 3G, Wimax and Wifi hotspot) are arranged, the number of the serv... [more] |
MoMuC2011-8 pp.81-86 |
IA, SITE, IPSJ-IOT [detail] |
2011-03-01 09:00 |
Kochi |
Kochi City Culture-Plaza CUL-PORT (Kochi prefecture) |
Buffered-Packets Releasing Method in Network-based Seamless Handoff for Wireless LAN Networks Takeshi Usui (NICT), Yoshinori Kitatsuji, Hidetoshi Yokota (KDDI Lab) SITE2010-57 IA2010-93 |
The seamless handoff technique which keeps the communication of mobile terminals prevents the packet loss by buffering ... [more] |
SITE2010-57 IA2010-93 pp.123-128 |
MoNA, IN (Joint) |
2009-11-12 13:00 |
Fukuoka |
Fukuoka Institute of Technology |
A Proposal of Reducing Packet Buffering for Network-based Fast Handover Harmonizing with IMS Takeshi Usui, Yoshinori Kitatsuji, Hidetoshi Yokota (KDDI R&D Labs,inc) MoMuC2009-42 |
Proxy Fast Mobile IPv6 (PFMIPv6) which improves the handover durations of Proxy Mobile IPv6 which is network-based hando... [more] |
MoMuC2009-42 pp.17-22 |
IA, SITE |
2009-03-05 15:00 |
Kumamoto |
|
On locating lossy segments for SIP signaling message in SIP service Takeshi Usui, Takeshi Kubo, Yoshinori Kitatsuji, Teruyuki Hasegawa, Hidetoshi Yokota (KDDI lab) SITE2008-50 IA2008-73 |
Recently, the number of SIP-based communication by Service Providers has been increasing. SIP allows Service Providers t... [more] |
SITE2008-50 IA2008-73 pp.37-42 |
NS |
2008-10-24 11:45 |
Osaka |
Kansai University |
A study on distributed design of Policy and Charging Rules Function Takeshi Usui, Yoshinori Kitatsuji, Teruyuki Hasegawa, Hidetoshi Yokota (KDDI Lab) NS2008-87 |
[more] |
NS2008-87 pp.109-112 |
ICM |
2008-03-13 11:15 |
Okinawa |
|
A study on efficient traffic engineering method for IMS/MMD Takeshi Usui, Yoshinori Kitatsuji, Teruyuki Hasegawa, Hidetoshi Yokota (KDDI lab) TM2007-56 |
IMS/MMD is a key technology for NGN, which integrates the fixed network and the mobile network. IMS/MMD adopts a basic ... [more] |
TM2007-56 pp.19-23 |