Thomas Kunz
Systems and Computer Engineering
35
GSM Logic Channels
nTraffic channels (2-way)
–Full-rate
(TCH/F)
–Half-rate
(TCH/H)
nSignaling Channels
–Broadcast
Channels (base to mobile)
nFrequency Correction Channel (FCCH)
nSynchronization Channel (SCH)
nBroadcast Control Channel (BCCH)
–Common
Control Channels
nPaging Channel (PCH) - base to mobile
nAccess Grant Channel (AGCH) - base to mobile
nRandom Access Channel (RACH) - mobile to base
–Dedicated
Control Channels (2-way)
nStand-alone Dedicated Control Channel (SDCCH)
nSlow Associated Control Channel (SACCH)
nFast Associated Control Channel (FACCH)