Parameter

Description

Max Cell Radius (Km)

(Current/Configured)

The Maximum Cell Radius is used to adapt various timing parameters of the MAC to the time it takes a message to reach its destination. This time delay is dependent upon the distance between the originating and receiving units. The timing parameters should be adapted to the largest expected delay, which is determined by the distance from the farthest SU served by the AU/Micro Base Station.

In a TDD system, the values range for the Maximum Cell Distance is from 10 to 50 km for a bandwidth of 3.5 MHz, and 7 to 45 km for a bandwidth of 5 MHz (representing a maximum delay of 6 symbols).

The actual value that the system will use is a multiple of the the one-way delay for a single basic time element: N*10 km for a bandwidth of 3.5 MHz or N*7.5 km for a bandwidth of 5 MHz, where N is a an integer from 1 to 6. The value configured for the Maximum Cell Radius will be up-rounded to the nearest applicable value.