The process that occurs during the handover intra BSC as follows:

A). During the call, MS will measure the strength and quality of the signal on the TCH and the signal strength from the neighboring cell. MS to evaluate and assess the average for each cell.

MS send the results to the BTS measurements every two times in one second cell not only on their own but also the results of measurements from the BTS neighboring cell.

B). The BTS will send the results of measurements on the TCH to the BSC. In the BSC, the function is activated when the placement is required to handover to another cell.

C). When the handover is done, BSC will check whether the channel had requested be met by another cell, if not the BSC will be the new BTS to enable TCH.

D). BSC will ask the BTS for a long time to send a message to MS with information about the frequency, time slot, and the output power for the change.

E). MS choose a new frequency handover and access to the appropriate time slot.

F). When the BTS to detect the handover, the BTS will send the information contains the physical "timing advance" (the distance between MS to the BTS) to MS. BTS also inform the BSC to send a "message HO detection" so that point on the new GS is connected.

G). MS send a "HO complete message."

H). Last time the BTS ordered not to activate the old TCH.

Intra BSC Handover