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Data transmission method for ensuring receiver and transmitter data identification

A data transmission method and data technology, applied in the field of data transmission

Active Publication Date: 2011-05-11
DATANG MOBILE COMM EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0035] In this case, the sender believes that the Nth SDU was not sent to the receiver correctly, but the receiver submitted it to the upper layer correctly and completely , and sent the correctly received status report information to the sender, which caused the SDUs processed by the RLC peers to be inconsistent, and the sender may inform the upper layer that the Nth SDU was discarded, but the actual situation is that the receiver It has been handed over to the upper layer, so for the RLC upper layer of the sending and receiving parties, there will be two completely different results, so it will inevitably cause data communication errors

Method used

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  • Data transmission method for ensuring receiver and transmitter data identification
  • Data transmission method for ensuring receiver and transmitter data identification
  • Data transmission method for ensuring receiver and transmitter data identification

Examples

Experimental program
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Embodiment Construction

[0062] Below with reference to Fig. 4, describe in detail according to the preferred embodiment of the present invention, the data transmission process of the SDU between the sender of the RLC layer peer entity and the receiver, wherein the technology of the known RLC layer protocol will not be repeated here. .

[0063] As shown in Figure 4, at T0 to T n At this time, the sender sends the AMD PDU of each fragment carrying the Nth SDU respectively (the process is the same as that in Figure 3), and will not be described again;

[0064] The receiver first receives these AMD PDUs from the sender, and tries to perform SDU reassembly;

[0065] If the receiver receives the AMD PDU carrying all the fragments of the Nth SDU, it can correctly reassemble the Nth SDU, and does not immediately send it to the upper layer, but starts the timer Timer_MRW_Storage for the Nth SDU (this The timing duration of the timer is determined by the relevant discussion below), and it is cached, and then...

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Abstract

The invention relates to a method of data transmission between a transmitter side and a receiver side, comprising: setting time length of first timer corresponding to the data to be T1 on the transmitter side and setting that of second timer corresponding to the data to be T2 on the receiver side, and restarting the second timer after the data is recombined: if not receiving feedback information expressing data recombination within T1, the transmitter side transmits data discarding information to the receiver side; if receiving the recombined data discarding information within T2, the receiver side discards the data ad cancels the timer; if not receiving the recombined data discarding information within T2, the receiver side transmits the recombined data to its upper layer and cancels thesecond timer.

Description

technical field [0001] The present invention relates to a data transmission method between a sender and a receiver, and more particularly to a data transmission method for maintaining data consistency between a sender and a receiver in all communication systems requiring high-reliability data transmission transfer method. Background technique [0002] In recent years, acknowledgment (acknowledgment) mode data transmission technology has been applied to communication systems that require reliable data transmission to prevent data loss and / or damage. According to these known data transmission technologies, in the process of data transmission, after sending a set of data to the receiver, the sender judges whether the receiver has completely received the set of data according to the confirmation information sent from the receiver. If the receiver does not receive all of the data, the sender retransmits (retransmission) the part of the data that the receiver did not receive. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L29/06
Inventor 郝禺台
Owner DATANG MOBILE COMM EQUIP CO LTD
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