MAC SUBLAYER

To the wireless communications MAC-sub layer has many important procedures to do.
The lower level MAC layer functions describe the rules for sharing frequencies,
time slots, cells, and codes.
It has also influence on physical layer constructions, in which way it`s designed.
- share the radio spectrum
- voice communications
- channels for user traffics and also for the signalling purposes
The MAC-sub layer is quite important when we are designing the wireless systems.
The MAC-sub layer assign different MAC-functions to the logical channels.
Logical channels may be assigned to the same or different physical channels.
Logical channels will use an FDMA, TDMA or CDMA strategy for multiplexing.
The different logical channels for the MAC-sub layer may be divided into four types:
1. Synchronization and broadcast channels
2. Paging and access channels
3. Control channels
4. Traffic Channels