Data packet retransmission method and system based on maximum retransmission time limit

The embodiment of the invention discloses a data packet retransmission method and system based on maximum retransmission frequency limitation. According to the technical scheme provided by the embodiment of the invention, the jitter length information reported by the data receiving end is acquired, and filtering estimation is performed on the jitter length information, so that the real-time jitter estimation length is obtained; determining round-trip delay information with a data receiving end, and calculating the maximum retransmission times of the data packet based on the real-time jitter estimation length, the jitter length information and the round-trip delay information; and under the condition that packet loss of the target data packet is detected, retransmitting the target data packet based on the maximum retransmission times. By adopting the technical means, stable receiving of the lost data packets can be guaranteed as much as possible, and the situation that a receiving end cannot receive the data p