HITACHI : Broadcast Services and QoS Control Provided by 3rd-generation Mobile Communication Technology "1xEV-DO"

	February 2006
	Information Systems

AUTHORS

Naohisa Hamaguchi	Mobile Development Project, Hitachi Communication Technologies, Ltd.
Takashi Kagei	Software Dept., Carrier Network Systems, Hitachi Communication Technologies, Ltd.
Shiro Mazawa	Mobile Development Project, Hitachi Communication Technologies, Ltd.
Yosuke Takahashi	CDMA Development Dept., Hitachi Communication Technologies, Ltd.

OVERVIEW

The technical standards for attaining "BCMCS (broadcast and multicast services)" with accompanying guaranteed QoS levels on a 1xEV-DO 3rd-generation mobile communication system—providing wireless data transmission at a maximum rate of 2.4 Mbit/s—have been stipulated by the 3GPP2 standardization body. By adding this standardization to our already developed 1xEV-DO system, Hitachi has implemented BCMCS and QoS functions with its mobile telephony services. A trial 1xEV-DO system with these functions has been delivered to KDDI CORPORATION and tested under an experimental environment. With these additions of BCMCS and QoS functions, along with providing unicast transmission, this 1xEV-DO system is expected to provide services such as simultaneous data transmission and broadcasting as well as IP-videophone.

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RELEVANT SITES

	Hitachi Communication Technologies, Ltd. (Japanese Only)
	The Hitachi Hyoron (Japanese Only)

KEYWORDS

1xEV-DO, BCMCS, QoS, RAN

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