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Patents Grants
last 30 patents
Information
Patent Grant
Cellular network synchronization methods and apparatus under separa...
Patent number
9,942,867
Issue date
Apr 10, 2018
Hitachi, Ltd.
Tao Zhao
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless communication system and method, and dynamic association c...
Patent number
9,801,093
Issue date
Oct 24, 2017
Hitachi, Ltd.
Peng Yang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Server, data caching method, and communication system
Patent number
9,635,528
Issue date
Apr 25, 2017
Hitachi, Ltd.
Chunguang Liu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Base station in cellular network system and sleep control method fo...
Patent number
9,369,956
Issue date
Jun 14, 2016
Hitachi, Ltd.
Dongheon Lee
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Renewable energy base station and coverage adjustment method theref...
Patent number
9,351,170
Issue date
May 24, 2016
Hitachi, Ltd.
Chunguang Liu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Heterogeneous cellular network
Patent number
9,271,152
Issue date
Feb 23, 2016
Hitachi, Ltd.
Dongxu Cao
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of sending data
Patent number
9,204,363
Issue date
Dec 1, 2015
Alcatel Lucent
Zhi Zheng
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Device and method for base stations dynamic clustering in mobile co...
Patent number
8,942,757
Issue date
Jan 27, 2015
Hitachi, Ltd.
Yunjian Jia
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for allocating subchannel in wireless network
Patent number
7,889,758
Issue date
Feb 15, 2011
Tsinghua University
Lei Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Handoff method of wireless local area network (LAN)
Patent number
7,289,472
Issue date
Oct 30, 2007
Hitachi, Ltd.
Masashi Yano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for retransmission of lost packet in fading channels
Patent number
7,069,490
Issue date
Jun 27, 2006
Tsinghua University
Zhisheng Niu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
TCP aware local retransmissioner scheme for unreliable transmission...
Patent number
6,961,327
Issue date
Nov 1, 2005
Fujitsu Limited
Zhisheng Niu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communications network independent designing system and managing me...
Patent number
5,583,860
Issue date
Dec 10, 1996
Fujitsu Limited
Akinori Iwakawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
CELLULAR NETWORK SYNCHRONIZATION METHODS AND APPARATUS UNDER SEPARA...
Publication number
20160353399
Publication date
Dec 1, 2016
Hitachi, Ltd
Tao ZHAO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS COMMUNICATION SYSTEM AND METHOD, AND DYNAMIC ASSOCIATION C...
Publication number
20150312799
Publication date
Oct 29, 2015
Hitachi, Ltd
Peng YANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SERVER, DATA CACHING METHOD, AND COMMUNICATION SYSTEM
Publication number
20140297792
Publication date
Oct 2, 2014
Hitachi, Ltd
Chunguang LIU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
HYPER-CELLULAR COMMUNICATION SYSTEM
Publication number
20140295839
Publication date
Oct 2, 2014
Hitachi, Ltd
Jian WU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
HETEROGENEOUS CELLULAR NETWORK
Publication number
20140256329
Publication date
Sep 11, 2014
Hitachi, Ltd
Dongxu CAO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RENEWABLE ENERGY BASE STATION AND COVERAGE ADJUSTMENT METHOD THEREF...
Publication number
20140256330
Publication date
Sep 11, 2014
Hitachi, Ltd
Chunguang LIU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
BASE STATION IN CELLULAR NETWORK SYSTEM AND SLEEP CONTROL METHOD FO...
Publication number
20140219150
Publication date
Aug 7, 2014
Hitachi, Ltd
Dongheon LEE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DEVICE AND METHOD FOR BASE STATIONS DYNAMIC CLUSTERING IN MOBILE CO...
Publication number
20120094710
Publication date
Apr 19, 2012
Hitachi, Ltd
Yunjian Jia
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication Control Server, Base Station, Terminal and Coordinate...
Publication number
20120014272
Publication date
Jan 19, 2012
Hitachi, Ltd
Sheng ZHOU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Methods of routing data within a wireless communication system
Publication number
20070286139
Publication date
Dec 13, 2007
LUCENT TECHNOLOGIES INC.
Zhisheng Niu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method of sending data
Publication number
20070230425
Publication date
Oct 4, 2007
LUCENT TECHNOLOGIES INC.
Zhi Zheng
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for allocating subchannel in wireless network
Publication number
20060056451
Publication date
Mar 16, 2006
Takashi Yano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Communication terminal device, communication terminal receiving met...
Publication number
20050207342
Publication date
Sep 22, 2005
Shiro Tanabe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Seamless handover method for mobile IPv6 home agent
Publication number
20050047372
Publication date
Mar 3, 2005
Masashi Yano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile IPv6 network having multiple home agents and method of load...
Publication number
20050047420
Publication date
Mar 3, 2005
Shiro Tanabe
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Handoff method of wireless local area network (LAN)
Publication number
20050030924
Publication date
Feb 10, 2005
Masashi Yano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TCP aware local retransmissioner scheme for unreliable transmission...
Publication number
20030035420
Publication date
Feb 20, 2003
Zhisheng Niu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for retransmission of lost packet in fading channels
Publication number
20020069388
Publication date
Jun 6, 2002
Zhisheng Niu
H04 - ELECTRIC COMMUNICATION TECHNIQUE