Monday, 9 November 2015

CS fallback Delay time Test Report

The test result about the CS fallback delay time from LTE to UMTS shows as below table.
For each test case, there are 5 times be tested in lab environment.
1.2 CSFB from LTE to UMTS Based on Redirection With Measurement
1.2.1 Mobile Terminating Call Test
The average Mobile Terminating Call of CS fallback from LTE to UMTS is about 3.636s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile terminating CS fallback.
The start time is 14:13:44:426
UE redirection to the UTRAN cell and send the “Alerting” message.
the time is 14:13:46:706.
1.2.2 Mobile Originating Call Test
The average Mobile Originating Call of CS fallback from LTE to UMTS is about 3.884s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile originating CS fallback.
The time is 14:15:41:880.
UE redirection to the UTRAN cell and receive the “Alerting” message. The time is 14:15:45:274.
The average Mobile Terminating Call of CS fallback from LTE to UMTS is about 3.782s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile terminating CS fallback.
The start time is 14:21:00:841
UE redirection to the UTRAN cell and send the “Alerting” message.
The time is 14:21:03:521.The average Mobile Originating Call of CS fallback from LTE to UMTS is about 3.899s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile originating CS fallback.
The time is 14:22:38:670.
UE redirection to the UTRAN cell and receive the “Alerting” message. The time is 14:22:42:569.
The average Mobile Terminating Call of CS fallback from LTE to UMTS is about 4.604s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile terminating CS fallback.
The start time is 14:28:27:718
UE handover to the UTRAN cell and send the “Alerting” message.the time is 14:28:32:427.

1.4.2 Mobile Originating Call Test
The average Mobile Originating Call of CS fallback from LTE to UMTS is about 4.793s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile originating CS fallback.
The time start time is 14:26:59:310.
UE handover to the UTRAN cell and receive the “Alerting” message. The time is 14:27:04:217.

1.5.1 Mobile Terminating Call Test
The average Mobile Terminating Call of CS fallback from LTE to UMTS is about 4.376s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile terminating CS fallback.
The start time is 14:33:09:511
UE handover to the UTRAN cell and send the “Alerting” message.the time is 14:33:13:883.

1.5.2 Mobile Originating Call Test
The average Mobile Originating Call of CSfallback from LTE to UMTS is about 4.783s.
There is the test signaling analysis at UE side below, just take one test result for example.
UE send Extend Service Request message and service type is mobile originating CS fallback.
The start time is 14:31:41:048

UE handover to the UTRAN cell and receive the “Alerting” message. The time is 14:31:45:828.

 
 Solution
CSFB from LTE to UMTS Based on Redirection With Measurement;
CSFB from LTE to UMTS Based on Redirection Without Measurement;
CSFB from LTE to UMTS Based on Handover With Measurement;
CSFB from LTE to UMTS Based on Handover Without Measurement;
All tests CSfall back from LTE to UMTS Delaytime is less than 5S.
 

Budi Prasetyo

About Budi Prasetyo

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