Message transmission method and user equipment

Abstract

The invention discloses a message transmission method and user equipment. The method includes the following steps: a sending node transmits a plurality of messages to a receiving node, receives a plurality of confirmation messages from the receiving node, and after determining that a first message is lost based on the received plurality of confirmation messages, retransmits the first message; and if packet loss of the retransmitted message is detected, the sending node continuously retransmits the first message to the receiving node at least twice within a predetermined time interval. The scheme of the invention enables the retransmitted message to be timely detected and recovered after packet loss occurs, reduces the number of times of retransmission timeout, improves the transmission rate, at the same time, reduces the packet loss probability of the retransmitted message, and reduces the probability of retransmission timeout.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a message transmission method and user equipment. Background technique [0002] In computer network communication, the packet loss recovery algorithm plays a vital role. It is an important algorithm in the TCP (Transmission Control Protocol) protocol stack to ensure the reliability of data transmission. It is a given in the case of data packet loss. The fault tolerance mechanism also directly affects the efficiency of data transmission and the utilization rate of network bandwidth. RFC2581 defines and describes typical packet loss recovery algorithms, mainly including timeout retransmission and fast retransmission. Timeout retransmission is an important mechanism for the TCP protocol to ensure data reliability. The principle is that the sending node starts a timeout timer after sending a message. If the timeout timer expires, the sending node still has not recei...

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Problems solved by technology

[0008] However, through testing, it is found that whether the DAC algorithm or the SACK+ algorithm is used, there is a high probability that the retransmission packet loss cannot be detected in time, so that the retransmission packet cannot be detected and recovered by the sender in time after the retransmission packet is lost, which eventually leads to Timeout retransmission, and in the scenario of high packet loss rate, frequent timeout retransmission will lead to an increase in transmission delay and a sharp drop in transmission rate

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