INITIAL TRANSMISSION AND RE-TRANSMISSION METHOD IN MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: An initial transmission and re-transmission method in a mobile communication system is provided to dynamically control a data block for initial transmission for smooth data block transmission upon re-transmission, and to give a multimedia service and allow data re-transmission according to synchronous or asynchronous methods. CONSTITUTION: A base station analyzes a rate of data to be forward transmitted(300) and decides a data rate(302). The base station checks a state of a Tx buffer(304), and configures an EP(Encoder Packet)(306). The base station checks whether the current data rate supports the EP(308). If not, the base station segments the current EP into a smaller EP by one stage to meet the data rate for reconfiguration(310). And if the current data rate supports the EP in the step 308, the base station checks whether the current EP is 3840-bit(312). If so, the base station checks whether to be Rate Set 1(314). If so, the base station configures the EP with the Rate Set 1(316). In case of Rate Set 2, the base station configures the EP with the Rate Set 2(318). After configuring the EP, the base station configures one PLP(Packet Level protocol) with two EPs(320), and transmits the PLP(328). If the current EP is not 3840-bit in the step 312, the base station checks whether to be 3072-bit(322). If so, the base station configures a PLP through the steps 314 to 320(322). If the current EP is 2304-bit, the base station configures a PLP through the steps 314 to 320(324). If the current packet does not correspond to the step 312, 322 or 324, the base station configures one PLP with one EP(326) and transmits the configured PLP(328).