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本文介绍了在移动通信用户激增,网络规模迅速扩大的情况下,第二代(2G)向第三代(3G)演进的发展过程,向3G过渡的第2 5代GPRS技术;WCDMA及第三代伙伴计划(3GPP)对其网络的三个版本以及3G业务种类等。
This article introduces the development of the second generation (2G) toward the third generation (3G) evolution and the second generation GPRS technology transitioning to 3G under the circumstance of the rapid increase of mobile communication users and the rapid expansion of the network scale. WCDMA and third Generation Partnership Project (3GPP) three versions of its network as well as the type of 3G services.