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Method and device for controlling communication bus

A communication bus and control method technology, applied in the field of communication, can solve the problem of high probability of conflict, and achieve the effects of reducing the packet loss rate, improving stability, and reducing the probability of bus conflict

Inactive Publication Date: 2010-01-13
ZTE CORP
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  • Abstract
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Problems solved by technology

[0009] In order to solve the problem of high probability of conflicts caused by traditional technical means, the present invention proposes a communication bus control method, which includes the following steps: generating different delay times on at least two line cards; After the card detects that the communication bus is idle, it will delay according to different delay times; line cards with communication needs will seize the current idle communication bus according to their respective delays, and send data to the communication bus

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  • Method and device for controlling communication bus

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Embodiment Construction

[0031] The communication bus control method and device will be described below in conjunction with the accompanying drawings.

[0032] figure 1 A plurality of communication bus control devices according to the present invention are shown. For example, in the #1 line card, it includes: a random delay generation module, arranged on each of at least two line cards, for generating different delay times from each other; a delay unit (not shown), for After the line card with communication needs detects that the communication bus is idle, it will be delayed according to different delay times; When using the communication bus, enable the line cards that have communication requirements to send data to the bus.

[0033] However, even if the delay time is randomly generated at one time, a conflict will occur in the next preemption of multiple line cards. For this reason, preferably, this embodiment also includes: an update unit (not shown), for The delay time is updated each time the ...

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Abstract

The invention provides a method for controlling a communication bus for solving the problem of great collision occurrence probability caused by traditional technological methods. The method comprises the following steps: generating mutually different delay times on at least two line cards; delaying according to the mutually different delay times when detecting that the communication bus is idle by line cards with communication requests; and preempting the current idle communication bus by the line cards with the communication requests according to the respective delay times and sending data to the communication bus. The invention also provides a device for controlling the communication bus. The method and the device lower the collision probability of the bus to a maximum extent, reduces the data packet loss ratio caused by collision, improves the working stability of the bus and enables corresponding equipment to work more reliable and stable.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a communication bus control method and device. Background technique [0002] Taking the HDLC bus control protocol as an example, High-Level Data Link Control (High-Level Data Link Control or HDLC for short) is a bit-oriented data link layer protocol that transmits data on a synchronous network. It is developed by the International Organization for Standardization (ISO) Developed according to the extension of IBM's SDLC (Synchronous Data Link Control) protocol. [0003] Link control protocols focus on the transmission of data segmented into physical blocks or packets, led by a start marker and terminated by a stop marker, also known as a frame. Each start (frame head) and end (frame end) has a sign code 01111110, which is used as the start and end indication of the frame and the synchronization of the frame. Its frame format structure is as follows figure 1 Shown: The...

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Application Information

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IPC IPC(8): H04L12/407
CPCH04L12/413
Inventor 罗伟石鸿斌苏红峰
Owner ZTE CORP
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