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Method and device for continuation of interruption point in data packet transmission process

A transmission process and data packet technology, applied in digital transmission systems, transmission systems, electrical components, etc., can solve problems such as time waste and low efficiency, and achieve the effects of saving time, increasing transmission speed, and improving transmission efficiency

Active Publication Date: 2015-08-19
BEIJING JINGWEI HIRAIN TECH CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a method and device for continuation of interruption points in the data packet transmission process, so as to solve the problems of inefficiency and time waste caused by the interruption of data transmission and the need to retransmit data during the data packet transmission process

Method used

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  • Method and device for continuation of interruption point in data packet transmission process
  • Method and device for continuation of interruption point in data packet transmission process
  • Method and device for continuation of interruption point in data packet transmission process

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Embodiment 1

[0034] When the data sending end and the data receiving end are in the process of transmitting data packets, the communication is interrupted due to various reasons, so that the data packet transmission fails. When the data sending end and the data receiving end establish a communication connection again, in order to improve the efficiency of data packet transmission, Continue to transmit data information from the position where the last data packet was interrupted, which solves the problem of low data transmission efficiency.

[0035] see figure 1 , the present embodiment discloses a method for surviving interruption points in the data packet transmission process. After the data receiving end and the data sending end establish a connection again, the method includes:

[0036] S101: Obtain the current read index value, and assign the read index value to a temporary read index as a temporary read index value;

[0037] S102: Send the data block numbered as the temporary reading...

Embodiment 2

[0044] see figure 2 , this embodiment discloses a method for continuation of interruption points in a data packet transmission process, the method comprising:

[0045] S201: Divide the data packet into at least two data blocks of the same size, and sequentially number the data blocks, and set both the read index value and the temporary read index value as the number of the current data block to be sent;

[0046]It should be noted that the method of dividing the data packet into multiple data blocks of the same size for transmission and numbering each data block belongs to the conventional method adopted by those skilled in the art when solving data transmission problems. I won't go into details.

[0047] In this embodiment, it is assumed that the data packet is divided into N equal-sized data blocks, numbered sequentially as 1, 2, 3...N-1, N. At the same time, this embodiment sets two variables: read index value and temporary read index value ; Wherein, the temporary read i...

Embodiment 3

[0066] see image 3 , this embodiment provides a device for continuation of interruption points in a data packet transmission process, the device comprising:

[0067] A read index value obtaining unit 301, configured to obtain a current read index value, and assign the read index value to a temporary read index as a temporary read index value;

[0068] The data block sending unit 302 is used to send the data block numbered as the temporary reading index value to the data receiving end, and the temporary reading index value is automatically increased by 1 after sending successfully;

[0069] The response signal receiving unit 303 is used to receive the response signal returned by the data receiving end; when the positive response signal returned by the data receiving end is received within the set time period, the read index value is increased by 1; otherwise the value of the read index remains unchanged ;

[0070] The storage unit 304 is configured to store the read index va...

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Abstract

The invention discloses a method and device for breakpoint renewing in a data package transmitting procedure. A read index and a temporary read index are arranged, the read index directs to data blocks waiting for responses of the data receiving end, the temporary read index directs to data blocks to be transmitted, and when the data blocks are successfully transmitted, 1 is automatically added on the temporary read index, a next data block can be continuously transmitted before the data receiving end returns the responses, and accordingly transmitting speed of data packages can be quickened. When the data blocks are not received by the data receiving end, a read index value is kept unchanged and stored, the read index value can be read after a data transmitting end is communicated with the data receiving end, a temporary read index value is provided for the read index value, and the data blocks which are not successfully received are transmitted again. The method and device for breakpoint renewing in the data package transmitting procedure improves data package transmitting speed on one hand, and achieves functions of the breakpoint renewing on the other hand.

Description

technical field [0001] The invention relates to the technical field of wireless data transmission, in particular to a method and device for continuing to save interruption points in a data packet transmission process. Background technique [0002] Nowadays, cars are equipped with a variety of electronic systems. In order to grasp the working status of automotive electronic systems in real time, car networking technology has been applied to the current automotive field. A type of Internet of Things. The vehicle terminal equipment is mainly composed of data acquisition unit, data storage unit and data communication unit based on GPRS / 3G network. The on-board terminal in the vehicle will collect all the working conditions and static and dynamic information of the vehicle, including vehicle bus information, sensor information, vehicle location information, etc., store these information, and upload the information through the data communication unit and wireless radio frequency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 李娟王旭勾晓菲
Owner BEIJING JINGWEI HIRAIN TECH CO INC
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