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In-band data transmission method and system

A data transmission method and data technology, applied in the direction of digital transmission systems, transmission systems, electrical components, etc., can solve the problems of increasing the number of retransmissions of sub-packet data frames and low in-band transmission efficiency, so as to reduce the number of retransmissions and improve the The effect of efficiency

Inactive Publication Date: 2015-08-19
DATA COMM SCI & TECH RES INST
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  • Description
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Problems solved by technology

[0005] However, in this method, the sending end cyclically sends all the sub-package data frames of this service data packet to the receiving end, and stops sending the sub-packet data frames of this service data packet until the confirmation response is received. The logic of this method is simple , although the number of data packet interactions is reduced, since there is no confirmation of the subpacket data frame, each subpacket data frame will be retransmitted regardless of whether the receiving end receives it, that is, the number of retransmissions of the subpacket data frame is increased, resulting in in-band Transmission is not efficient

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  • In-band data transmission method and system

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Embodiment Construction

[0032] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] figure 1 It is a flowchart of an in-band data transmission method according to an embodiment of the present invention; refer to figure 1 , the method includes the following steps:

[0034] S1: The sending end cyclically sends the subpacket data frames to be transmitted in this service to the receiving end;

[0035] It should be noted that, in this implementation manner, the task of sending a complete data packet from the sending end to the receiving end is called a service interaction. Considering the maximum transmission unit (Maximum Transmission Unit) allowed by the path, when the size of the data to be sent exceeds the MTU limit, the sending end divides the c...

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Abstract

The invention discloses an in-band data transmission method and system relating to the technical field of mobile communication. According to the invention, by sending sequence numbers of received sub package data frames back to a transmitting terminal through the receiving terminal and by determining sub package data frames that are not received according to the sequence numbers of the received sub package data frames through the transmitting terminal, the transmitting terminal only needs to send the sub package data frames that are not received to the receiving terminal in a circulating manner and does not need to send all the sub package data frames to the receiving terminal in a circulating manner, so that retransmission frequency of the sub package data frames is reduced and in-band transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an in-band data transmission method and system. Background technique [0002] In a 3G mobile communication system, non-speech data transmission through an in-band channel is widely used, and this method is also called in-band data transmission. [0003] In the 3GPP mobile communication system, the speech codec technology is Adaptive Multi-Rate (Adaptive Multi-Rate, AMR) technology. According to the 3GPP TS 26.101 standard, the AMR speech frame is divided into three parts: frame type, core frame and bit stuffing. Among them, the AMR core frame is composed of voice and noise data, and is divided into three types according to the importance of the data it carries: Type A, Type B, and Type C (Class A / B / C). Among them, type A is the most sensitive and important data in a frame. Once this part of the data is corrupted, the entire frame cannot be decoded and is simply dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00
Inventor 李旭东叶琅周星王斌
Owner DATA COMM SCI & TECH RES INST
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