METHOD AND APPARATUS FOR CONTROLLING DATA FLOW IN A DATA COMMUNICATION DEVICE

摘要

PURPOSE: A method for controlling data flow in a data communication device and an apparatus thereof are provided to prevent unnecessary PDCP(Packet Data Convergence Protocol) data discard due to transmission delay from the RLC(Radio Link Control Layer) to an MAC(Media Access Control) layer by using a RLC data flow control technology. CONSTITUTION: An RLC layer receives transmission data from a PDCP layer(402). The RLC layer processes data in RLC layer(406). The processed transmission data is transmitted to an MAC layer(408). The RLC layer gets a transmission time value of the transmission data from a PDCP layer(410). The RLC layer gets the time value which transfers the transmission data to the MAC layer(414). The RLC layer discards the transmission data according to a reception status of a PDCP data discard request signal(412). The RLC layer determines the input-output delay of RLC data by calculating the input output delay time of the RLC data(418).