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A method of transmitting data packets

A data packet and data technology, applied in the field of data packet transmission, can solve problems such as fixed, short data packet length, and complex structure, and achieve the effect of simple protocol structure, high applicability, and low implementation cost

Active Publication Date: 2018-10-12
北京锁定精密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length of the data packet is short and fixed, and the data packet cannot be effectively transmitted on other communication interfaces.
[0003] The UART interface is a serial interface, which is a simple and commonly used communication interface. Its structure is simple and easy to use, but it cannot support multiple nodes.
[0004] The OpenCAN protocol is an upper-layer communication protocol based on the CAN bus, which extends the capabilities of CAN, defines the data exchange method and the description method of nodes, but its structure is relatively complicated, it is not convenient to use in low-cost systems, and cannot be used in other Type Link Transmission

Method used

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Embodiment Construction

[0031] In order to express the technical solutions and advantages of the embodiments of the present invention more clearly, the technical solutions of the present invention will be described in further detail below through the accompanying drawings and examples. The following examples are used to illustrate the application, but not to limit the application range.

[0032] figure 1 It is a schematic flowchart of a method 100 for transmitting data packets according to an embodiment of the present invention. Such as figure 1 The illustrated method 100 includes:

[0033] 110. A first interface among the at least two interfaces belonging to the first node receives a data packet sent by the second node, where the data packet includes: a protocol ID, a source device ID, a target device ID, a data type ID, and data, The device ID of the first node is used as the target device ID in the data packet, and the device ID of the second node is used as the source device ID in the data pac...

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Abstract

The invention relates to a method for transmitting a data packet. The method comprises the following steps: receiving the data packet transmitted by a second node by a first interface in at least two interfaces that belong to a first node, wherein the data packet comprises a protocol ID, a source equipment ID, a target equipment ID and a data type ID, and data; judging whether the protocol ID, the source equipment ID, the target equipment ID and the data type ID in the data packet are consistent with a stored protocol ID, a source equipment ID, a target equipment ID and a data type ID by a receiving filter of the first interface; if the judging result of the receiving filter is being consistent, then judging whether the protocol ID, the source equipment ID, the target equipment ID and the data type ID in the data packet are consistent with the stored protocol ID, the source equipment ID, the target equipment ID and the data type ID by a transmitting filter of each second interface in at least one second interface; and if the judging result of the transmitting filter is being consistent, then forwarding the data packet through a third interface.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for transmitting data packets. Background technique [0002] CAN bus is a bus-type communication interface for industrial embedded systems, which has the characteristics of high reliability and multi-node. However, the length of the data packet is short and fixed, and the data packet cannot be effectively transmitted on other communication interfaces. [0003] The UART interface is a serial interface, which is a simple and commonly used communication interface. It has a simple structure and is easy to use but cannot support multiple nodes. [0004] The OpenCAN protocol is an upper-layer communication protocol based on the CAN bus, which extends the capabilities of CAN, defines the data exchange method and the description method of nodes, but its structure is relatively complicated, it is not convenient to use in low-cost systems, and cannot be used in other type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/08
CPCH04L65/60H04L69/324
Inventor 张敬然卢轩
Owner 北京锁定精密科技有限公司