Anritsu MT8820C - CS Fallback to TD-Scdma;Redirection to TD-SCDMA

231
CS Fallback to TD-SCDMA/Redirection to TD-SCDMA 6.1.2.
This chapter describes an example where the LTE cell executes CS fallback to TD-SCDMA DL Channel 10054.
1. Execute STDSEL TDSCDMA to change the system to TD-SCDMA.
2. Execute PRESET to perform TD-SCDMA initialization.
3. Execute CHAN 10054 to set Common Parameter - Channel to 10054.
4. Execute INTEGRITY ON to set Call Processing Parameter - Integrity Protection to ON.
5. Execute REGMODE CS to set Call Processing Parameter - Registration Mode to CS.
6. Execute LAC 0001 to set Call Processing Parameter - LAC to 0001.
7. Execute STDSEL LTE to change the system to LTE.
8. Execute PRESET to perform LTE initialization.
9. Execute IRAT CSFB_TDSCDMA to set the destination at CS Fallback execution to TD-SCDMA.
10. Execute IRATW_CH 10054 to set Call Processing Parameter - Inter-RAT Mobility - W-CDMA - DL Channel to
the same value as the above TD-SCDMA Channels setting.
11. Execute IRAT_STDCNG ON to set automatic switching when CS Fallback is executed to change Standard.
12. Perform the LTE connection. (2.1.2, 2.1.3, 2.1.4)
13. Execute CSFB to set CS Fallback or Redirection to TD-SCDMA.
14. Execute CALLSTAT? to query the call processing status is 7 (= Loop Mode 1).
(If not 7 (= Loop Mode 1 ), repeat step 14.)
For Redirection, the changes to the above procedure are shown below.
9. Execute IRAT REDIRECT_TDSCDMA to set the destination when Redirection is executed to TD-SCDMA.
14. Execute CALLSTAT? to query the call processing status is 2 (=Idle (Regist)).
(If not 2 (= Idle(Regist)), repeat step 14.)
NOTE:
 TD-SCDMA LAC must be fixed to “0001”
 To perform CS Fallback/Redirection to TD-SCDMA at 1 Port, version 22.25 or later of the TSCDMA
software is required.