A method and system for managing memory using Hybrid Automatic Repeat Request in a communication system is provided. The method includes storing a retransmitted burst in a memory. The retransmitted burst includes plurality of bits. One or more of memory address of the retransmitted burst and the information corresponding to the retransmitted burst is recorded in a location table. The location table records memory addresses and the information corresponding to a plurality of bursts stored in the memory. The method further includes determining one or more preceding bursts corresponding to the retransmitted burst stored in the memory using location table. Thereafter, a combined burst is generated using the retransmitted burst and one or more preceding burst, if one or more preceding bursts corresponding to the retransmitted burst are stored in the memory. The combined burst includes the plurality of bits.