求翻译：由于语音业务是移动通信业务最重要的组成部分，而QoE(Quality of Experience,用户体验)已经成为衡量运营商网络质量的主要标准之一，所以在无线网络优化测试工作中，掉话性能指标一直是测试工作的重点，更能体现用户的主观感受，因此针对掉话问题进行原因分析并迅速解决就显得十分必要了。在此背景下，本文以“TD-SCDMA网络中掉话问题的分析与优化”为课题，通过TD-SCDMA关键技术的理论分析，就可能的掉话现象从网络优化的角度提出详细的处理流程和常规方法，并结合TD-SCDMA试验网的优化案例，对其进行了验证和总结。是什么意思？

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The voice is the most important mobile communication services, and the components of Experience QoE (Quality, user experience has become a carrier network quality of one of the key criteria, so in a wireless network to optimize testing work performance indicators, the phone has been the focus of the

Due to voice business is mobile communications business most important of part, and QoE (Quality of Experience, user experience) has became measure operators network quality of main standard one, so in wireless network optimization test work in the, off words performance index has been is test work