求翻译：目前ITU接受了4种制式的3G标准：WCDMA、cdma2000、TD-SCDMA和WiMAX。本文通过技术演变、专利分布情况和频谱分配技术三个方面入手分析3G四大标准。是什么意思？

Itu to accept the four kinds of standard 3g standard: wcdma, of cdma2000, td-scdma and the wimax and. In this paper, the evolution of technology, patent distribution and spectrum allocation in the three-pronged analysis 3g four standards.

Currently ITU accepted the 4 standard 3 G WCDMA , CDMA standards: 2000, TD - SCDMA and WiMAX. Through this technology evolution, and distribution of proprietary technology and spectrum allocation with 3 in 4 large G analysis 3 standard.

At present ITU has accepted 4 kind of service pattern 3G standards: WCDMA, cdma2000, TD-SCDMA and WiMAX.This article evolves, the patent distribution situation and the frequency spectrum assignment technology three aspects through the technology obtains analyzes the 3G four big standards.

Currently accepted 4 standard ITU 3G standards: WCDMA, CDMA2000, TD-SCDMA and WiMAX. This article through the evolution of technology, patents and spectrum allocation 3G four standard three-pronged analysis.

is accepted by ITU DTT standard 4 of 3 criteria: G WCDMA, CDMA 2000, TD - SCDMA and WiMAX . Through this technology evolution, and distribution of proprietary technology and spectrum allocation with 3 in 4 large G analysis 3 standard. ;