Analysis of TD-SCDMA master calledprocess

Differences between calling and calling Processes

1. The callee has one more pagingtype than the caller.
2. After RRC is established, the Ca sends the CM service request, while the CA sends the RR paging response.

3. The caller has an authentication and encryption process, while the called name only has an encryption process and no authentication process.

4. The setup message is sent to RNC on ue, while the called setup message is sent to ue by RNC. You can view the UE number in setup.
5. After setup, the caller receives the call proceeding, and the called receives the call confirmed

6. Alerting, connect, and connect acknowledge messages are called in the opposite way.

We can also see that:
1. The RRC creation process is usually around S.

|2. the establishment process of Rb is usually about S.
3. The Calling starts from the RRC request to the connection time of about 9 s, and the called time is about 7 s.

4. When the caller receives the call proceeding, the called party initiates the RRC establishment, and the two are almost synchronized. This can be used to analyze the call failure caused by the called location.