Sectorization of a cell : 

• Sectorization is a process to cut down equipment costs in a cellular network. It influences in traffic load and cell size
• Sectorization reduces co-channel interference, when applied to clusters of cells
• The maximum traffic capacity of sectored ANTENNAS is more than omnidirectional antennas.

Frequency Re-use :

• Frequency re-use is the key factor of cellular network ability for increasing both coverage and capacity.
• Different frequencies are utilized by adjacent cells; however problem does not arise to determine the cell sufficiently far apart using the same frequency.
• Reuse distance and the reuse factor are the two ELEMENTS that influence frequency reusability
• The frequency is 1/K, where K is the number of cells that cannot use the same frequencies for transmission.

TRANSMITTED Power Control :

• Transmitted power control is one of the technical mechanism used within some networking devices
• TPC is used for preventing too much unwanted interference among wireless networks
• The central idea is to automatically REDUCE the transmission OUTPUT power used, when other networks are within the same range.
• TPC reduces interference problems and increases the battery capacity
• The power levels of a single mobile device can be reduced by 6dB

Discontinuous Transmission : 

• Discontinuous Transmission, also known as DTX in short is a method of momentarily powering down a mobile set when there is no voice input to the set.
• The overall efficiency of a wireless voice communication system is optimized by DTX.
• Each speaker in a two way conversation speaks slightly less than half of the time.
• The workload of the components in the transmitter amplifiers are made easy and reduces interference. 

 Sectorization of a cell : 

Frequency Re-use :

Transmitted Power Control :

Discontinuous Transmission :