基于IMS的VoLTE计费研究  

Research on IMS Based on Vo LTE Charging

作　　者：赵文贤[1] 黄琳[1] 马千里[1] 

机构地区：[1]中兴通讯股份有限公司南京研发中心,江苏南京210012

出　　处：《邮电设计技术》2015年第1期71-74,共4页Designing Techniques of Posts and Telecommunications

摘　　要：基于IMS的VoLTE(Voice over LTE)语音解决方案,已成为业界公认的LTE网络语音解决方案的主要发展方向。该方案可在实现LTE网络下提供高质量的音视频通话的同时提供高速率的数据业务。对基于IMS的VoLTE语音计费时如何实现IMS域和EPC域计费的关联进行了研究,提出了根据IMS APN标识关联EPC网络和通过PCRF传递IMS计费标识与P-GW计费标识进行关联的2种方法,从而使VoLTE语音产生的流量不进行计费;对当VoLTE语音发生SRVCC切换时如何避免IMS域和CS域语音重复计费进行了研究,提出了根据STN-SR和related-ICID进行话单过滤的2种方法,从而过滤掉CS重复话单。Vo LTE solution based on IMS has become the main development direction of LTE Vo IP solutions. The scheme can be realized in the LTE network to provide the high quality of audio and video calls while provide high rate data business. It studies how to realize the correlation of IMS domain and EPC domain during voice based on IMS charging, provides two methods of associating EPC network according to IMS APN identifier and through the PCRF IMS charging logo and P-GW identification for correlation, to avoid the charging of the traffic of Vo LTE. It also studies how to avoid the IMS domain and CS domain voice repeat billing when current voice SRVCC switching occurs, and put forward two methods on filtering bill according to the STN- SR and related-ICID, so as to filter out the repeated billed in CS.

关 键 词：基于IMS的VoLTE 计费关联 重复话单过滤 双模单待无线语音呼叫连续性 

分 类 号：TN915[电子电信—通信与信息系统]