SMS network architecture and elements
This Article on SMS covers following:
SMS basics and types
SMS network and elements
SMS MO MT call flow
SMS versus MMS
SMS network is composed of following network elements in GSM.
• SMSC
• HLR
• MSC
• VLR
• BSC
• BTS
• MS or UE
SMS is carried by signaling channel(i.e.SDCCH) on the air interface from MS to BTS. Then SMS is transported by SS7 channel through BSC,MSC/VLR and SMSC. ReferGPRS tutorialfor complete network architecture of GSM including elements used in SMS.
Useful Links
GSM RF planningMobile Terminated CallGSM downlink PS data call flowGSM uplink PS data call flowGSM TutorialGSM protocol stackGSM physical layerGPRS protocol stackGPRS tutorialCS vs PS
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CS vs PS
MS vs PS