NTP
(Network Time Protocol)
NTP
is a TCP/IP protocol used to broadcast the precise time in the entire IP
network. The transmission itself is based on UDP
-The RFC1305 standard
defines the algorithm used by the NTP, to ensure the accuracy of the clock
synchronization.
The
Huawei
SGSN9810 supports setting the remote server as the local time server. The local
peer works in client mode.
Functions - NACC (Network Assisted Cell
Change)
When the MS initiates a cell reselection between the BSCs during the data transmission, NACC function reduces the time delay of the cell reselection greatly and improves the QoS.
Generally, it maintains the service interruption within 300 ms to 700 ms, rather than 1 second or 2 seconds without applying this function.
To assist fast cell reselection, the MS needs to know the system information of the target cell before cell change.
[If the target cell belongs to another BSC/RNC, In this case, the system information is included in the RAN-INFORMATION message, and then sent to the target BSC/RNC by SGSN.
