摘要
在对3G手机VoIP话音QoS的主要实现技术进行分析的基础上,提出了3G手机VoIP话音QoS新的实现技术。文中通过对实时传输控制协议(RTCP协议)的详细研究,同时根据3G系统无线信道的具体特点,说明了实时传输控制协议运用于3G手机VoIP话音的QoS控制中的缺陷,并阐述了相应的控制解决方法。在基于Android的3G智能手机的VoIP客户端软件中,综合运用VoIP话音QoS的主要成熟实现技术,同时结合文中提出的VoIP话音QoS的解决思路,实现了对VoIP话音的QoS的控制。基于Android的3G智能手机的VoIP客户端软件通过在不同的网络环境条件下的测试,VoIP话音质量良好,说明文中提出的3G手机VoIP话音QoS新的实现技术具有一定的实用价值。
On the basis of analyzing the main realization technology of 3 G mobile phone VoIP voice of QoS, a new implementation technique of 3G mobile phone VoIP voice of QoS is proposed. After studying the RTCP（ Real-time Transport Control Protocol） and the features of 3G wireless communication channel, the imperfection of the RTCP protocol applying to the VoIP QoS control over 3G mobile communications is presented, and then the corresponding solution is described subsequently. Both of the mature QoS technol- ogy and the .methods presented in this paper are applied to android client software running on 3G cell phone, and then the voice quality over different network conditions is tested. The test results show that the voice quality becomes better, which presents the new QoS technology of 3G VolP mobile communication discussed in this thesis is practical.
出处
《通信技术》
2014年第4期425-429,共5页
Communications Technology
