下一代移动无线通信系统的目标是实现无所不在的、高质量的、高速率的移动多媒体传输。
The next-generation wireless personal communication systems are expected to provide ubiquitous, high-quality, and high-rate mobile multimedia transmission.
IMS允许运营商对多媒体会话进行适当收费：如果用户通过3 G移动网络使用了视频会议，则通常会产生包含音频和视频的大量数据传输。
IMS allows operators to charge multimedia session appropriately: If a user USES videoconference over the 3g cellular network, there is usually a large data transfer that consists of audio and video.
第四代无线通信中，多媒体移动服务需要高速率的传输机制。
Multimedia mobile services afforded in the 4th generation wireless communication require high bit-rate transmission technology.
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