3G网络优化难点及解决方案译文(5)

3G有两个有利的而优势：宽带语音通信和易IP为基础的服务。综合在一起,这些为先进的移动英特网服务奠定了基础,包括个性化的入口,你的手机将会自动接收最新的电视信息,提供高品质的声音和图像。使3G变为事实需要依靠不同地区相关技术的发展。它在改善介绍无线通信分界面,支持多频率通信扮演了重要的角色。

Enhanced Data Rates for Global Evolution (EDGE) enables GSM and TDMA operators to of f6r 3G services using 6xisting network frequencies. By making changes and additions to standardization of evolutionary phases of the air interface and the backbone networks, as well as the migration to ALL-IP and multimedia networks.

CDMA2000

Cdma2000 is a decidedly efficient 3G standard for the delivery of high bandwidth data and high capacity voice services. The evolution of the cdma2000 standard will enable mobile systems to offer data throughputs of 2 M bit/sec and beyond.

The higher bandwidth that cdma2000 provides will deliver the full potential of 3G. For example, cdma2000 also allows simultaneous access to several voice, video and data services at once.

Cdma2000 is fully compliant with IMT-2000 requirements for 3G. Cdma2000 \ rill be

implem6nted in the existing (\} equ6ncy bands of CDMA and TDMA at 800 and 1900 MHz, as well as in new spectrum at 2GHZ in Japan.

Ericsson is a leader in cdma2000 development, and a key driver in the standardization of evolutionary phases of the air interface and the backbone networks, as well as the migration to ALL-IP and multimedia networks.

Bluetooth

Bluetooth is an open standard for two-way, short-wave radio communications between different devices. It marks the end of cables and cords between mobile phones, palmtops, portable PCs and printers, for example. Furthermor6, Bluetooth enables information between such devices to be synchronized. Diary information held on a PDA can be updated automatically when thin range of a Bluetooth-enabled PC. Bluetooth is also going to be important for machine-to-machine communications - one of the largest growth areas in telecommunications.

Bluetooth is a key development for terminals and other devices using mobile networks. It is available now for 2G networks and as 3G syst6ms, will play an increasingly important supporting role in the \{ htur6 of mobile communications. Ericsson has already announced Bluetooth devices, including the T36 Bluetooth phone and a Bluetooth headset.

Bluetooth was originally developed by Ericsson, but is now under the auspices of the Bluetooth Special Interest Group. It bas \ ride spread support among telecom equipment vendors, computer and chip manufacturers.

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