This use case enables simulation of IMS along with the EPC-SIM, providing an all-in-one solution. Compatible with IR.92 and IR.94, the option enables validation of both audio and conversational video.
- Unmatched flexibility
- All-in-one solution (EPC, IMS, eNB, iRAT)
- Advanced features: PWS, LBS, SON, HetNets
The following is supported:
- IMS-authentication and key agreement (AKA)-based authentication
- Supports both session initiation protocol (SIP) and TEL URI
- Support of real-time transport protocol (RTP) and real-time transport control protocol (RTCP)
- Audio call: AMR-WB, AMR
- Conversational video codec: H.264
- Both the IPv4 and IPv6 IP address
Following VoLTE procedures:
- VoLTE UE attachment and IMS registration
- VoLTE UE initiated detach and IMS deregistration
- Basic VoLTE UE to VoLTE UE voice call establishment and call clearing
- Basic VoLTE UE to VoLTE UE multimedia (voice/video) call establishment and call clearing
End-to-End EPC Core testing
The enforcement of PCC policies is handled by the gateway elements in the EPC. Since this is such a crucial function, an important test setup would be isolating the gateway (typically the PDN-GW) for testing. The QualityAssurer can completely surround the gateway by simulating all the necessary elements. Special attention can be given in this setup to testing the enforcement of PCC functionality by the gateway.
End-to-End EPC and IMS Core testing
In this scenario the system under test (SUT) is comprised of an evolved packet core (EPC) and IP multimedia subsystem (IMS). Thousands of eNBs and millions of subscribers can be simulated to recreate live network volume and scale. Simulated subscriber behavior can be modeled to reflect behavior of those subscribers in a live network. As in the real world, this can be a mix of random, unpredictable behavior of the majority of subscribers together with more predictable behavior of specific groups of subscribers.
End-to-End EPC, IMS and 2G/3G Core testing
The figure below provides more coverage in terms of the network that is tested. It provides a more accurate measure of end-user experience even for iRAT scenarios. All the metrics of network performance are also relevant within this test setup. The testing does not need to be limited only to intra-LTE scenarios. It can also include iRAT mobility scenarios to 2G/3G networks. This can be accomplished by having the QualityAssurer simulate the necessary 2G/3G elements:
- MSC for Sv and I2 interfaces needed for SRVCC
- SGSN for S3 and S4 interfaces for handover of data sessions
- RNC for S12 interface
Thus the QualityAssurer solution can be used to completely surround the EPC and IMS networks for testing VoLTE under real-world conditions within a single system.
Emulate millions of VoLTE subscribers to test SBC device functions including P-CSCF, ATCF, IMS-AGW and ATGW. Quality Assurer test application sipFlex that emulates VoLTE subscriber and 2G/3G eMSC and MGW; proxyFlex that emulates P-CSCF, I-CSCF and S-CSCF; asFlex that emulates SCC-AS Application Server; and hssFlex that emulates HSS and PCRF, enables surround testing of SBC to characterize its functionality, performance, capacity, scalability and resiliency. These applications also can be used to test enhanced SRVCC (e-SRVCC) features such as alerting and mid-call.
End-to-End IMS Network testing
QualityAssurer provide two applications for end-to-end testing of IMS network including VoLTE and enhanced SRVCC (e-SRVCC) features such as alerting and mid-call. In this configuration, QualityAssurer emulates millions of VoLTE/SRVCC subscribers and 2G/3G eMSC using sipFlex application, and HSS device and PCRF device using hssFlex application. These applications enables manufacturers and mobile operators to verify their IMS network in their labs before deployment by recreating and simulating the real-world network traffic patterns of millions of subscribers.