Broadcast Channel (BCCH) Update Procedure (SIB Contents)

Last updated: January 15, 2009

While in active cell operating mode, the test set broadcasts the System Information Message on the BCCH. The System Information Message consists of a Master Information Block (MIB) and several System Information Blocks (SIBs 1, 2, 3, 5, 7 and 11). The information in these SIBs helps the UE (mobile station) successfully communicate with the network.

The user-settable parameters contained in the MIB and SIBs are listed in the table below. When you change any of these parameters, the test set changes the information it sends on the BCCH accordingly. Some of these parameters can not be changed while in active cell operating mode (you must first switch to cell off operating mode). Changing any of the other parameters causes the test set to perform a BCCH update procedure if the call status is idle and BCCH Update Page is set to Auto (if the test set is on a connection with a UE, the test set will post an error if you try to change any of these parameters). During a BCCH update procedure, the test set sends a Paging Type I message to the UE indicating that it needs to re-read the BCCH. If your UE does not support the BCCH update procedure, you may set BCCH Update Page to Inhibit , which prevents the test set from sending a Paging Type I message to the UE (the test set still updates the BCCH). However, note that the UE will then be unaware of the changes in the BCCH. See BCCH Update Page for more information.