VOLTE CLIENT ON WINDOWS PLATFORM
Geethabai, H K Krishnappa, T G Anish · IJITR International Journal of Innovative Technology and Research - IJITR International Journal of Innovative Technology and Research · 2017
Long Term Evolution (LTE) is a 4G technology developed by the 3GPP standards.Pre-LTE networks, 2G/3G/EDGE/HSPA/UMTS were used for data in conjunction with circuit switched GSM for Voice calls.Since LTE being only packet switched, for voice calls VoLTE that is based on IP Multimedia Subsystem (IMS) framework is the solution.LTE network has more advancement such as higher data transfer rate up to 100 MBPS [1], higher bandwidth, low latency, more efficient use of the network resources and lower operational cost compared to pre-LTE networks.In the existing solution, the Application Processor, directly calls the services from Service Adaptation Layer (SAL) of the IMS framework, bypassing the Universal Terminal API (UTA) layer in VoLTE client on Windows platform.The proposed work implements UTA sublayer between Application Processor and IMS framework, replicating the behavior of Target Hardware/Modem platform to Windows platform.This enables the Application Processor to call all the services of IMS framework using UTA layer instead of calling it from SAL directly.Thus, porting Modem platform specific UTA layer to Windows platform.The implementation also covers GUI enhancements, to adapt to Windows Platform.The results achieved shows that, debugging and development effort reduced from 75% to 25% of time.It also allows to verify the UTA services on Windows platform without using any Target Hardware/Modem platform and Network Simulators, thus completely eliminating dependency on hardware resource.I.