Data acquisition method based on asynchronous transfer mode inverse multiplexing agreement

Abstract

The invention discloses a data acquisition method based on asynchronous transfer mode inverse multiplexing agreement (IMA). The method comprises: configuring IMA parameters by an IMA processing unit of the data acquisition equipment configures and accessing the IMA frame of the object to be acquired to an IMA data access unit of the data acquisition equipment; extracting an IMA control agreement cell in the accessed IMA frame and resolving to obtain IMA parameter configuration of the data source to be acquired; reconfiguring IMA parameters by the IMA processing unit according to the obtained IMA parameter configuration; setting a loopback to establish an IMA group in the data acquisition equipment; disconnecting the set loopback and performing delay compensation to the established IMA group; and acquiring the asynchronous transfer mode cell in the accessed IMA frame. With the invention adopted, normal data transmission and communication can be ensured while acquiring needed data.

Description

technical field [0001] The invention relates to an asynchronous transfer mode inverse multiplexing (IMA) technology, in particular to a data collection method based on the IMA protocol. Background technique [0002] The IMA (Inverse Multiplexing over ATM) protocol is an inverse multiplexing protocol of Asynchronous Transfer Mode (ATM). It is a protocol defined by the ATM Forum and is used to bundle multiple narrowband circuits to transmit high-speed ATM services. The goal of the IMA protocol is to realize the management of multiple low-speed links, so as to provide a transparent transmission path for the upper layer, that is, the ATM layer. The IMA protocol implements data transmission in the form of frames, and an IMA frame includes IMA control protocol (ICP) cells, padding cells, and ATM cells. The ICP cell mainly implements the management function stipulated in the IMA protocol; the filling cell has no management function, and is mainly used to maintain a steady stream o...

AI Technical Summary

Problems solved by technology

[0005] 1) The data receiving end of Node B 2 receives the IMA frame sent by the data acquisition device 1 and RNC 3 at the same time, which will have mutual influence on data transmission;

[0006] 2) Even if Node B 2 can receive the IMA frames sent by the data acquisition device 1 and RNC 3 respectively, and extract ICP cells, there are three state machines in the IMA protocol: link state machine (LSM), group state machine (GSM)) and the working mechanism of the group communication state machine (GTSM), it can be seen that the ICP cell sent by the data acquisition device 1 will still affect the IMA group state machine of Node B 2, for example, Node B 2 knows that the data acquisition device 1 If all the sending link states of Node B 2 do not enter the activated or available state, the receiving link state of Node B 2 cannot enter the activated state to prepare to receive ATM cells, so that the IMA group state machine of Node B 2 cannot enter the operable state state, so it will affect the normal communication between Node B 2 and RNC 3, affecting the normal operation of the equipment

Images