Clarification about the Fastreturntolteswitch parameter

4G LTE
, , ,
1

Hi Experts.

I need more clarification about the Fastreturntolteswitch parameter:

FASTRETURNTOLTESWITCH

In Huawei vendor, when exporting the 3G cell parameters data template from planned area portal (U2020) the value of FASTRETURNTOLTESWITCH appeared as 0 or 1 composed of 7 digits as figure attached.

However in Hedex library the FASTRETURNTOLTESWITCH about six switches as mentioned below:

  1. PERFENH_PS_FAST_RETURN_LTE_SWITCH: Whether the BSC6900 releases the RRC connection when a CS fallback UE keeps a PS connection after terminating the CS service.
    When this switch is turned on, the BSC6900 releases the RRC connection by sending to a UE an RRC CONNECTION RELEASE message that carries the information about UE-supported LTE frequencies if the UE keeps the PS connection after terminating the CS service. When this switch is turned off, the BSC6900 does not release the RRC connection if a CS fallback UE keeps the PS connection after terminating the CS service.

  2. HO_UMTS_TO_LTE_FAST_RETURN_SWITCH: Whether the information about frequencies of neighboring LTE cells is carried in the RRC CONNECTION RELEASE message the BSC6900 sends to a CS fallback UE in a UMTS cell for RRC connection release. This parameter is configured at the cell. When this switch is turned on, the information about UE-supported frequencies of neighboring LTE cells is carried in the RRC CONNECTION RELEASE message. When this switch is turned off, the information about UE-supported frequencies of neighboring LTE cells is not carried in the RRC CONNECTION RELEASE message.

  3. HO_SRVCC_FAST_RETURN_TO_LTE_SWITCH: Whether to trigger measurement-based UMTS-to-LTE fast return for an SRVCC UE whose CS service has been released in the UMTS network. SRVCC is short for single radio voice call continuity.When this switch is set to ON, measurement-based UMTS-to-LTE fast return can be triggered for an SRVCC UE whose CS service has been released in the UMTS network. When this switch is set to OFF, measurement-based UMTS-to-LTE fast return cannot be triggered for an SRVCC UE whose CS service has been released in the UMTS network.

  4. HO_CSFB_BASED_MEAS_FAST_RETURN_SWITCH: Whether the RNC triggers the measurement-based UMTS-to-LTE fast return for CSFB UEs after their voice services are released in a cell on the UMTS network. When this switch is turned on and the UE supports LTE measurement, the UE triggers an LTE measurement after its voice service is complete. After the RNC receives the measurement report, the RNC decides whether to trigger a U2L fast return based on the measurement result. When this switch is turned off, the RNC can perform only a blind fast return for the UE.

  5. HO_CSFB_BASED_RSCP_FAST_RETURN_SWITCH: Whether the RNC triggers the UMTS-to-LTE fast return for CSFB UEs based on the RSCP of the best cell after their voice services are released in a cell on the UMTS network. When this switch is turned on, the RNC sends a periodic intra-frequency measurement control message to the UE, instructing the UE to measure the RSCP of the best cell. If the RSCP of the best cell reported by the UE is equal to or greater than the value of U2LNCovRscpThd, the RNC will trigger a blind fast return. Otherwise, the RNC will not trigger the blind fast return. When this switch is turned off, the RNC does not send the UE the periodic intra-frequency measurement control message instructing the UE to measure the RSCP of the best cell.

  6. HO_CSFB_BASED_GRID_FAST_RETURN_SWITCH: Whether virtual grid-based CSFB fast return takes effect.
    When this switch is turned on, virtual grid-based CSFB fast return takes effect.
    When this switch is turned off, virtual grid-based CSFB fast return does not take effect.

So kindly your clarification regarding:

Why in the export data existed as 7 digits and in the Hedex library the same parameter has 6 switches?