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A frame flow control method and device

A control method and frame flow technology, applied in the direction of digital transmission system, data exchange network, electrical components, etc., can solve the problem of not receiving the response and so on

Active Publication Date: 2021-01-22
SANECHIPS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a bad channel environment, the response may not be received, and the sending station can only release the sending frame stream unilaterally through the timer

Method used

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  • A frame flow control method and device
  • A frame flow control method and device
  • A frame flow control method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] see image 3 , which shows that an embodiment of the present invention provides a frame flow control method, the method may include:

[0071] S101. Determine whether the station has sent / received data, if the station has sent / received data, execute steps S102 and S103; if the station has not sent / received data, execute steps S106 to S108.

[0072] S102. If the station has sent / received data, acquire source address / destination address information of the sent / received data.

[0073] Understandably, if the station needs to send / receive data, it needs to obtain the source address / destination address information of the data to be sent / received, so as to send or receive the data.

[0074] S103. Judging whether the transmission link has been established by sending / receiving the frame stream according to the source address / destination address information, if it is judged that the transmission link has been established by sending / receiving the frame stream, then perform steps S...

Embodiment 2

[0097] see Figure 4 , which shows that an embodiment of the present invention provides a frame flow control method, the method may include:

[0098] S201. When it is determined that the station has no data transmission, check the timer count of the sending / receiving frame flow in the station, and release the sending / receiving frame flow whose timer count expires.

[0099] see Figure 5 , specifically, step S201 includes steps S2011 and S2012:

[0100]S2011. When it is determined that the station has no data transmission, check the timer count of the sending / receiving frame flow, and obtain an updated timer count.

[0101] It can be understood that when the station has no data to transmit, it considers releasing its sending / receiving frame flow to release the occupation. The release of the send / receive frame flow is judged based on whether the timer count of the send / receive frame expires, so first update the timer count of the send / receive frame flow to determine the remai...

Embodiment 3

[0130] see Figure 10 , which shows that an embodiment of the present invention provides a frame flow control method, which is used to realize asynchronous release of frame flow between the first station and the second station by counting the frame flow timer, and the method may include:

[0131] S301. The first station sends data to the second station by sending a frame stream, and resets a timer for sending the frame stream.

[0132] It should be noted that, when the first station and the second station perform data transmission, the first station sends data to the second station by sending frame streams. At this time, the sending frame flow of the first station and the receiving frame flow of the second station establish a data transmission link so that data can be transmitted between the two stations.

[0133] A timer is set when the first station creates the sending frame stream, and whenever data is sent, the timer for sending the frame stream is reset to keep it active...

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Abstract

The embodiment of the present invention discloses a frame flow control method. The method includes: when it is determined that the station has no data transmission, checking the timer count of the sending / receiving frame flow in the station, and expiring the timer count Release the sending / receiving frame flow; when it is determined that the station has data transmission, and when it is determined that there is an idle connection frame flow available in the station, use the idle connection frame flow to establish a data transmission link to the data to transfer. The embodiment of the invention also discloses a frame flow control device.

Description

technical field [0001] The present invention relates to the technical field of power line communication, in particular to a frame flow control method and device. Background technique [0002] The power line communication network generally adopts a tree topology. There is a continuous data flow between the two sites (respectively the sending site and the receiving site) of the parent-child node relationship. The data stream buffer is stored on the sending / receiving site, and the data structure for managing the data stream buffer is a frame stream. A logical data transmission link is formed between the sending frame stream and the receiving frame stream. Each site simultaneously maintains data communication with other sites directly adjacent in the network topology. In order to realize the synchronization of sending and receiving data between stations, some commands and responses must be used to coordinate the data transmission between the send / receive frame streams of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/823H04B3/54H04L47/32
Inventor 薛明惠
Owner SANECHIPS TECH CO LTD