METHOD FOR CFN DETERMINATION BETWEEN RNC AND NODE-B IN 3GPP IMT-2000 SYSTEM

摘要

a. This invention belongs to the art described in the claims ; The present invention relates to a method for determining the CFN period in the base station and the radio network controller in a mobile communication system of the asynchronous system. ; or . Technical problem to be solved by this invention ; using the communication frame of a base station and a radio network controller in a mobile communication system, an asynchronous period related to a method for determining the CFN. ; The . Solution subject matter of the invention ; The process according to the invention is transmitted to the base station in a radio network controller to a forward node synchronization control frame, when transmitted to the downlink node synchronization control frame from the radio network controller calculate the time and the time received from the base station. In addition, the base station receives the forward node synchronization control frame is sent to the radio network controller the uplink node synchronization control frame. In the uplink node synchronization control frame sent with the time obtained in the above. Also transmits the uplink node synchronization control frame includes the time sent from the base station to the RNC. The uplink node synchronization control frame is obtained with the time received in the radio network controller. On the basis of the four time to obtain the round-trip delay (Round Trip Delay). ; is the synchronization process of the transmission channel downlink synchronization control frame is received in the range by specifying a range to be received in the base station when transmitting a downlink synchronization control frame to the base station in the radio network controller Identify how. If the received frame is received out of the range has to be sent and with a difference in the reception time described in the synchronization control frame for uplink transmission. By repeating the above process, the information of the downlink synchronization control frame to the range to be received and to be received. ; in determining a connection frame number, type of transmission channel, the arrival time of the transmission channel The analysis of the value of (Time of Arrival). Sending air from one hour to obtain a reception time and the node receiving the transmission ratio of the Node B has the value of the synchronization frame, calculates a difference between the reception time and sent one hour. ; in the The terms of the time difference in a unit of 10ms frame. Also determines the next connection frame number and the base station transmitting the frame and the connection frame number determined by the radio network controller time to transmit the difference between the air in addition to the round-trip delay to the difference in the time to send a radio network controller.