Parameter Name |
Max Resend Times of Phy.Info. |
|---|---|
Description |
This parameter specifies the maximum number of Physical information retransmissions. Assume that the maximum number is Ny1. If the number of retransmissions exceeds Ny1 before the BTS receives any correct SAMB frame from the MS, the BTS sends the BSC a connection failure message, which can also be a handover failure message. After receiving the message, the BSC releases the newly assigned dedicated channel and stops the timer T3105. During asynchronous handover, the MS constantly sends handover access bursts to the BTS. Usually, the Timer T3124 is set to 320 ms. Upon detecting the bursts, the BTS sends a Physical information message to the MS over the main DCCH/FACCH and sends the MSG_ABIS_HO_DETECT message to the BSC. Meanwhile, the timer T3105 starts. The Physical information containing information about different physical layers guarantees correct MS access. If the timer T3105 expires before the BTS receives the SAMB frame from the MS, the BTS resends the Physical information message to the MS. For details, see GSM Rec. 08.58 and 04.08. |
GUI Value Range |
[1,255] |
Default Value |
30 |
Unit |
Times |
Step |
- |
Modification Rules |
None |
Configuration Policy |
The value of this parameter can be increased when handover becomes slow or the handover success rate decreases because of clock problems or poor transmission.An MS can be handed over only when Max Resend Times of Phy Info multiplied by Radio Link Timeout is greater than the interval between EST IND and HO DETECT (120-180 ms). Otherwise, the handover fails. |
Recommended Value |
30 |
Parameter Relationship |
Radio Link Timeout |
BSC Feature |
Handover |
Parameter Class |
Parameters About Radio Resources |
Caution |
None |