GSM System
GSM :Global System for Mobile Communications, originally known as Groupe Spécial Mobile
- A standard set to describe protocols for second generation (2G) digital cellular networks used by mobile phones.
- GSM is a cellular network, which means that mobile phones connect to it by searching for cells in the immediate vicinity.
- Use TDMA for greater capacity
Frequency Band
MS communicates with base station via radio channel.
Transmission Link
Both Base station & mobile station transmits with different frequency to create full-duplex communication path
- Downlink: transmission path from Base station to mobile station
- Uplink: transmission path from mobile station to Base station
source: wiki-GSM, UTM note.
No comments:
Post a Comment