In this paper, we propose an improved resource reservation algorithm ESRPT (Enhanced Shortest Remaining Processing Time) for bursty traffic based on IEEE 802.15.3 standard. In this algorithm, each transmitter reports current fragments number of the first MSDU (MAC Service Data Unit) and all of the fragments number of the remainder MSDUs in the pending transmission queue to PNC (piconet coordinator). In the next superframe, PNC firstly allocates part CTAs (Channel Time Allocation) for each stream based on the remainder fragments number of the first MSDU by SRPT rule, then allocates remainder CTAs for each stream based on all fragments number of remainder MSDUs by the same SRPT rule. This algorithm decreases the job failure rates of delay-sensitive video streaming efficiently at the cost of slightly increasing communication overheads. Simulation results show that our proposed ESRPT method achieves better performance in QoS for multimedia streams compared to the existing SRPT schemes.