Asynchronous point-to-point communication method and device
A point-to-point communication and point-to-point protocol technology, applied in the field of Internet communication, can solve the problems of reduced real-time performance, inability to provide reliable transmission, and increased overhead, and achieve the effect of improving reliability and real-time performance.
Inactive Publication Date: 2011-08-03
EMERSON NETWORK POWER CO LTD
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Problems solved by technology
According to the existing scheme, if the working method without serial number and confirmation is used for communication, reliable transmission cannot be provided in a noisy environment; if the mechanism of serial number confirmation is used for communication, the overhead will increase and the real-time performance will decrease
Method used
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[0027] The present invention will be further described in detail below through embodiments in conjunction with the accompanying drawings.
[0028] see figure 1 , the asynchronous point-to-point communication method of an embodiment includes a data sending process A and a data receiving process B, specifically as follows:
[0029] Data sending process A includes:
[0030] Step S1. The external controller hands over the data to be sent to the data sending unit in the point-to-point protocol controller;
[0031] Step S2. The data sending unit performs framing and check code calculation on the data to be sent;
[0032] Step S3. The data sending unit sends data with a serial bit stream, and the communication link management unit in the point-to-point protocol controller performs error control and flow control;
[0033] Data receiving process B includes:
[0034] Step S4. The data receiving unit in the point-to-point protocol controller receives the serial bit stream, and extrac...
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The invention discloses an asynchronous point-to-point communication method which comprises steps as follows: an external controller hands data to be transmitted over to a data transmitting unit in a point-to-point protocol controller; the data transmitting unit carries out framing and check code calculation on the data to be transmitted; the data transmitting unit transmits the data through a serial bit stream, and a communication link management unit in the point-to-point protocol controller executes error control and flow control; a data receiving unit in the point-to-point protocol controller receives the serial bit stream, extracts the data from the received serial bit stream, and completes verification and frame structure analysis, and the communication link management unit executes error control and flow control; and the external controller reads the data from the point-to-point protocol controller. The invention also discloses a corresponding asynchronous point-to-point communication device which comprises an external controller and a point-to-point protocol controller based on hardware. The invention enhances the real-time performance and reliability of point-to-point communication.
Description
technical field [0001] The invention relates to Internet communication technology, in particular to an asynchronous point-to-point communication method and device. Background technique [0002] The PPP protocol (Point to Point Protocol, point-to-point communication protocol) is one of the widely used serial communication protocols in the field of communication. It can be used in the field of synchronous / asynchronous transmission, and has the characteristics of strong error detection capability and high efficiency. According to the existing scheme, if the working method without serial number and confirmation is used for communication, reliable transmission cannot be provided in a noisy environment; if the mechanism of serial number confirmation is used for communication, the overhead will increase and the real-time performance will decrease. Therefore, it becomes an urgent need to seek a real-time / reliable asynchronous point-to-point link layer communication solution. Conte...
Claims
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Login to View More IPC IPC(8): H04L12/56H04L1/18H04L1/16H04L29/08
Inventor 陈富文江丽萍陶洪胡煜单世强吕琳
Owner EMERSON NETWORK POWER CO LTD