Method and System for changing cyclic prefix length in wireless communication system

摘要

the invention in a base station in a wireless communication system of the cyclic prefix (Cyclic Prefix) length to about how to change as , to determine the state of the data transmission channel comprising the steps of: determining a cyclic prefix length, the cyclic prefix length, and the determined current as compared with the process of generating a cyclic prefix length of the cyclic prefix length change information, the cyclic prefix length change information adding a downlink is characterized in that it comprises the step of transmitting a reference signal to the terminal. Also changes the cyclic prefix length information, is characterized in that in addition to the initial value (C _int ) of the pseudo-random number sequence (pseudo-random sequence) to use when generating the downlink reference signal. ; by changing the length of the cyclic prefix flexibly according to channel conditions according to the base station of the cyclic prefix length to change the method of the present invention to efficiently cope with the channel variation, and keep a stable connection, the base station is the length of the cyclic prefix to the terminal by notifying in advance can obtain the symbol synchronization and efficiently. ; guard interval, cyclic prefix, Cyclic Prefix