Adaptively controlling prefix length

A method for adaptively setting a prefix length in communication with a base station, the method comprising:

• receiving base station information from the base station;
• determining the prefix length based on the received base station information;
• and inserting a cyclic prefix in a transmission frame with the determined prefix length,
• wherein the determining the prefix length includes:
• determining a communication distance of the base station based on the received base station information;
• and
• setting the prefix length differently according to the determined communication distance of the base station.

A method for adaptively setting a prefix length, the method comprising:

• receiving base station information from a base station;
• selecting at least one from a plurality of prefix lengths based on the received base station information;
• and
• inserting a cyclic prefix in a transmission frame with the selected prefix length and transmitting signals using the transmission frame,
• wherein:
• the received base station information includes information of at least one of transmission power, a cell radius, a base station identifier, a cell identifier associated with the base station, delay spread in a cell of a base station, and a zone indicator.

An apparatus for adaptively setting a prefix length, the apparatus comprising:

• a memory configured to store and to manage a plurality of prefix lengths associated with base station types
• a receiver configured to receive base station information from a base station;
• a selector configured to select a prefix length from the plurality of prefix length based on the received base station information;
• and
• an inserter configured to insert a cyclic prefix having the determined prefix length in a guard interval of a transmission frame,
• wherein the plurality of prefix lengths are:
• previously determined by determining a comparatively short prefix length for a femtocell base station and mapping the comparatively short prefix length to the femtocell base station, and determining a comparatively long prefix length for a macrocell base station and mapping the comparatively long prefix length to a macrocell base station;
• and
• stored in the memory in as a prefix length set.