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近日在新加坡举行的第二届CDMA世界年会上,著名的移动通信设备供应商朗讯科技、摩托罗拉、北方电讯和高通(Qualcomm)宣布,他们将会同CDMA发展集团与世界各地的标准管理机构,一起为新一代移动通信技术制定详尽的标准和规范。这种建立在IS-95标准之上的第三代系统将采用更宽频带的CDMA技术,所提供的先进移动通信服务包括高质量语音、高速数据、图像传输和多媒体应用。新标准将符合甚至超过ITU对第三代移动通信IMT-2000高速数据传输所提出的技术要求。ITU要求无线数据的传输速率在移动状态下达到144kbps,在步行状态下达到384kbps,在静止环境中的要求为2Mbps。由于新标准对频带的广泛适用性,因而无论在现有的蜂窝通信频带,PCS频带,还是未来的FPLMTS频带范围内,均可开展各项先进的无线通信业务。
At the second annual CDMA World Congress in Singapore recently, renowned mobile equipment vendors Lucent Technologies, Motorola, Nortel and Qualcomm announced that they will work with CDMA Development Group and standard regulators all over the world For the new generation of mobile communication technology to develop detailed standards and norms. This third-generation system, based on the IS-95 standard, will employ wider-band CDMA technology, offering advanced mobile services including high-quality voice, high-speed data, video transmission and multimedia applications. The new standard will meet or even surpass the technical requirements set by the ITU for IMT-2000 high-speed data transmission of 3G mobile communications. The ITU requires that the transmission rate of wireless data reach 144kbps in the mobile state, 384kbps in the pedestrian state, and 2 Mbps in the quiescent environment. Due to the broad applicability of the new standard to frequency bands, advanced wireless communication services can be carried out in the existing cellular communication band, PCS band and future FPLMTS band.