How Many Broadcast Channels & what’s it work in GSM ?

BCCH(Broadcast Control Channels)
  • Downlink Only.
  • Broadcast information of the serving cell (System Information).
  • Transmitted on timeslot zero of BCCH carrier.
  • Read only by idle mobile at least once every 30 secs.
SCH (Synchronization Channels)
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  • Carries information for frame synchronization.
  • Contains frame number and BSIC (Base Station Identity Code).
FCCH (Frequency Correction Channels)
  • Downlink Only.
  • Enable MS to synchronize to the frequency.
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