It stands for time division multiple access.

• It uses time instead of frequency. Different users share same time slots of the complete time available.
• Each user is allocated a time slot in which user can access the channel.
• Transmission of data is in “burst and buffer” method. The transmission from different users is interfaced into repeating frame structure.

A frame consists of a no of slots. Each frame consists of preamble, an information message and trail bits. Half of the time slots are used for forward link channels and remaining for reverse link channels.

Guard bits are used to provide synchronization of different receivers between different time slots and frames.

• Guard time needs to be minimized
• Transmission rates are high.
• Handoff process is simple.