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Retransmission message determination method and device

A technology of message and message sequence number, applied in the field of communication, can solve the problem of high error rate of retransmission message determination, and achieve the effect of improving the determination accuracy rate and accuracy

Active Publication Date: 2017-03-15
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiments of the present invention expect to provide a method and device for determining retransmitted messages, which can at least partially solve the problem of high error rate in determining retransmitted messages

Method used

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  • Retransmission message determination method and device
  • Retransmission message determination method and device
  • Retransmission message determination method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] like figure 1 As shown, this embodiment provides a method for confirming a retransmission message, the method comprising:

[0053] Step S110: At the first moment, record the message out-of-order phenomenon to form message out-of-order information, the message out-of-order information at least includes the missing message sequence number of the missing message to be completed and the out-of-order formation time;

[0054] Step S120: At a second moment, match the first packet sequence number of the received first packet with the missing packet sequence number; wherein, the second moment is later than the first moment;

[0055] Step S130: If the sequence number of the first packet matches the sequence number of the missing packet successfully, then determine the time difference between the receiving time of the first packet and the formation time of the out-of-sequence;

[0056]Step S140: comparing the time difference with the retransmission timeout time to form a comparis...

example 1

[0091] like image 3 As shown, the message processing method shown in this example is based on a message processing method of the retransmission message determination method in the foregoing method embodiment, including:

[0092] Step S1: receiving a message;

[0093] Step S2: Judging whether the current address is equal to the destination address of the message. The destination address here is the address of the target receiving end carried in the message. The current is the address of the receiving end. If yes, go to step S3.

[0094] Step S3: Judging whether the current message sequence number is equal to the expected message sequence number. The current message serial number here is the message serial number of the message received in step S1, if yes, go to step S4, if not, go to step S5.

[0095] Step S4: Calculate the sequence number of the next expected message.

[0096] Step S5: Determine whether the current message serial number is greater than the expected mess...

example 2

[0103] like Figure 4A As shown, after the message corresponding to the message start sequence number is received, the message corresponding to the message end sequence number is directly received. In this case, the message corresponding to the message sequence number between the message start sequence number and the message end sequence number is lacking The messages corresponding to these serial numbers are the aforementioned missing messages. In Fig. 4, there are also missing message start sequence numbers and missing message end sequence numbers.

[0104] against Figure 4A , if the message sequence number of the currently received first message is the sequence number of all missing messages, it is obvious that the lack of messages is not shallow, and the out-of-sequence information of the message can be deleted, and the normal reception of messages can be resumed.

[0105] like Figure 4B As shown, if the message sequence number of the currently received first message ...

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Abstract

The embodiment of the invention discloses a retransmission message determination method and device. The method comprises the steps of recording a message disorder phenomenon to form message disorder information at a first moment, wherein the message disorder information at least comprises a defective message serial number and disorder forming time of a to-be-completed defective message; matching a received first message serial number of a first message with the defective message serial number at a second moment, wherein the second moment is later than the first moment; if the first message serial number matches with the defective message serial number successfully, determining the time difference of the receiving time of the first message and the disorder forming time; comparing the time difference with retransmission timeout, thereby forming a comparison result; and determining whether the first message is a retransmission message or not based on the comparison result.

Description

technical field [0001] The present invention relates to the retransmission technology in the communication field, in particular to a method and device for determining a retransmission message. Background technique [0002] The packet retransmission rate is an important indicator for measuring packet transmission. During the transmission of a message based on the Transmission Control Protocol (Transmission Control Protocol, TCP), each time the sender sends a message, it starts a timer to wait for confirmation information. The confirmation information is returned to the receiving end after the receiving end successfully receives the data. If the sending end does not receive the acknowledgment information before the timer expires, it considers that the message is lost or damaged, and needs to be retransmitted. The retransmission rate is defined as the ratio between the length of the resent message and the length of all call messages. Generally, the higher the retransmission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18
Inventor 吴博
Owner CHINA MOBILE COMM GRP CO LTD
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