TD-SCDMA系统中动态信道分配技术研究

作为第三代移动通信系统的标准之一,时分-同步码分多址(TD-SCDMA)系统由于采用了时分双工(TDD)方式而在性能上显示出了不同于其他两个主流标准的优势,它能更充分满足日益兴起的不对称传输服务的需求。动态信道分配(DCA)技术是TD-SCDMA系统中的一种关键技术,它从业务服务的实际情况和趋势出发,更合理地分配信道,缓解频谱资源的紧张状态。本文主要是在现有的动态信道分配技术的基础上提出一种改进算法,通过仿真分析确认该改进算法可以减少数据掉包概率,使得系统资源得到更好的利用,更好的提高无线频谱利用率,防止网络阻塞。

TD-SCDMA System Dynamic Channel Allocation Technology Research

As one of the standards of 3G mobile communication systems, the TD-SCDMA system has some performance advantages which are different from the other two main standards because of its TDD duplex. It can improve the quality of the asymmetry transmitting service. Dynamic Channel Allocation (DCA) technology is one of the key technologies in the TD-SCDMA system, which has been putted forward based on the real conditions and the development trend of the communication service, can not only allocate the channel resources more reasonably but also improve the tense states of the spectrum resources. This main contribution in the paper is given an improved algorithm which can reduce the proportion of data lose and make better in the utilization of the wireless spectrum.