About CDMA Voice Testing
Add support for CDMA voice over A1p/A2p interface between BSC and MSCe in Landslide. Landslide can emulate MS + BSC, and the SUT is MSCe.
CDMA Voice Nodal and to support back-to-back testing CDMA MSCe Node are available for testing (Internal Testing only).
Abbreviations
CDMA – Code Division Multiple Access
BSC – Base Station Controller
MSCe - Mobile Switching Center Emulation
BSAP – Base Station Application Part
BSMAP – Base Station Management Application Part
DTAP – Direct Transfer Application Part
MM - Mobility Management
CC - Call Control
SUA - Signalling Connection Control Part User Adaptation Layer
Architecture Model - A1p/A2p is the interface between BSC and MSCe
Call Flows
MM - Mobile Registration
The following message flow defines the Mobile Registration procedure.
CC - Call Setup
Call setup patterns supported : Mobile Origination and Mobile Termination
Mobile Origination Call
Mobile Termination Call
Call Clearing - Can be initiated by the network or the UE
Initiated by the Network:
Initiated by the UE:
Application Design ( Capacity and Session Loading Tests are supported)
- To support the test of CDMA voice over A1p/A2p interface, a call function has been implemented based on the Call Control procedures.
On CDMA Voice Nodal test case, we support two types of call function patterns: Mobile-to-Mobile Disabled and Mobile-to-Mobile Enabled.
- If mobile-to-mobile is disabled, the CC entity of the UE will be emulated on CDMA Voice Nodal test case, and the CDMA MSCe Node test case will emulate the CC entity of both the network and the other call party UE to support back-to-back test.
- The following call function patterns can be configured to support back-to-back test for this situation:
- CDMA Voice Nodal: All Originate, CDMA MSCe Node: All Terminate
- All calls are originated by UE.
- CDMA Voice Nodal: All Terminate, CDMA MSCe Node: All Originate
- All calls are originated by network.
- CDMA Voice Nodal: OTOT…, CDMA MSCe Node: TOTO…
- The calls 1, 3, 5 …are originated by UE, and the calls 2, 4, 6 … are originated by network
- CDMA Voice Nodal: TOTO…, CDMA MSCe Node: OTOT..
- The calls 1, 3, 5 …are originated by network, and the calls 2, 4, 6 … are originated by UE.
- If mobile-to-mobile is enabled, the CC entity of the UE will be emulated on CDMA Voice Nodal test case, and the CDMA MSCe Node test case will only emulate the CC entity of the network to support back-to-back test.
The following call function patterns can be configured to support back-to-back test for this situation:
- CDMA Voice Nodal: OTOT…
The call pairs between the UEs will be 1-2, 3-4, 5-6 …. The UEs 1, 3, 5 …will be call originators and UEs 2, 4, 6 …will be terminators respectively. The CDMA MSCe Node will act like a real MSCe to support the mobile to mobile call.
- Call hold time and call pending time will be configured to support multi-time call emulation.
- The voice traffic over the A2p interface will be emulated by rtpvoice DMF. The voice traffic will be started as a configurable delay time elapses since the call is established and be stopped as the call is cleared.
- If mobile-to-mobile is disabled, the CDMA MSCe Node will configure rtpvoice DMF to support voice traffic emulation, and the traffic path of one direction is UE/BSC -> MSCe and the traffic path of the other direction is MSCe -> UE/BSC.
If mobile-to-mobile is enabled, the rtpvoice DMF will only be configured on CDMA Voice Nodal, and the traffic path of both directions is UE/BSC -> MSCe -> UE/BSC.
- The call clearing procedure will be initiated by the originator after the call hold timer expires during call emulation. But at the stopping phase of test, the call clearing procedure will be initiated in the CDMA Voice Nodal test case no matter it’s originator or terminator.