Toward the coming of ubiquitous network society, we are addressing the research areas of radio, mobile, and broadband network infrastructure technology, as well as its application technology. The main research topics include, Optical Broadband Access Network, 3G/4G Mobile Communication System, Next-generation Radio and Optical Communication Technology, Intelligent Transportation System, and Multiparty Video Conferencing System. In our laboratory, researchers conduct the Tsinghua-Hitachi Joint Laboratory and BUPT-Hitachi Joint Laboratory activity, collaborate with institutes/universities/customers, and participate in standardization activity in China and abroad.
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3G/4G Mobile Communication System |
Fixed/Mobile Convergence
All-IP core network can support seamless roaming of mobile stations among different wireless access network entities or among heterogeneous networks.
Uniform platform for multimedia communication service
With uniform service platform, service continuity, QoS and security for multimedia communication service can be guaranteed across heterogeneous networks.
Optimized group communication over mobile networks
In operators' hybrid mobile networks (3G/B3G, 802.11, WiMAX, etc), the contents of the same group will be distributed to the end users by the use of broadcast and multicast technologies. It achieves optimization of group communication support and efficient usage of radio resources in mobile network.
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Intelligent Transportation System (ITS) |
Probe car system
By analyzing GPS data from probe cars, and combining with wireless network technology, a web system with highly accurate realtime traffic information and traffic prediction function are realized.
Advanced Internet-ITS Applications
By vehicle-to-vehicle and vehicle-to-roadside communication, applications such as safety driving support and portal service are realized, and a comfortable and reliable social transport environment is established.
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Optical Broadband Access Network |
GPON (Gigabit Passive Optical Network)
Research on the next-generation GPON system providing high-speed and cost-effective Internet access, voice and IPTV services.
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Next-generation Radio and Optical Communication Technology |
Tsinghua-Hitachi Ubiquitous IT Joint Laboratory
Research topics focus on next-generation radio communication technology, including MIMO-OFDM wireless technology, adaptive antenna selection technologies, sub-carrier wave and power joint allocation technologies, and wireless sensor networks.
BUPT-Hitachi Joint Laboratory of Optical Broadband Access Network Tech.
Research topics focus on next-generation optical communication technology, including multi-services modeling (voice/video/data), band-efficiency DBA algorithm, queue/buffer management, protection solutions comparison in EPON/GPON system, and wavelength allocation scheme in WDM-PON.
HITACHI China 
