Channel testing device and method

Abstract

The invention provides a channel testing device and method. The channel testing device comprises an SDH multiplex unit, an IMA module, an ATM module, a host control module and one or more STM-1 optical interfaces. Whether a load sharing IMA set exists or not is judged according to configuration information; if the load sharing IMA set does not exist, a data stream is directly multiplexed or demultiplexed into a virtual container through an SDH to be transmitted, sent or received when the data stream is sent or received; if the load sharing IMA set exists, according to the upper-layer allocation load sharing condition, the receiving direction is characterized in that an E1 in the IMA set is multiplexed to a virtual container of the corresponding optical interfaces in an intersected mode to be transmitted and sent; the receiving direction is characterized in that according to the load sharing allocation conditions, VC-12s in the same IMA sets in the two pairs of STM-1s are gathered into a pair of STM-1 in an intersected mode, and then an 2M E1 stream is demultiplexed from the VC-12s to be sent to the IMA processing module; the IMA processing module conducts timestamp adding and data decode processing on the recovered ATM data stream. According the technical scheme, the function of a common STM-1 IMA set can be tested, and two pairs of STM-1 load sharing IMA sets can be further directly tested without an external optical transmitter and receiver.

Description

Technical field [0001] The invention relates to a channel testing device and method, and belongs to the technical field of mobile communication. Background technique [0002] On the current 3G (third generation mobile communication) transmission network, there are mainly three physical interfaces: IUB, IUR, and IU. IUB is the physical interface between NodeB (base station) and RNC (radio network controller), and IUR is RNC and For the interface between RNC, IU is the interface between RNC and CN (core network). For the first two interfaces, my country mainly adopts the IMA (Inverse Multiplexing Asynchronous Transmission Mode) protocol. [0003] The IMA protocol can bundle one or more physical links to form an IMA virtual link group, which is a physical link with variable bandwidth relative to the user. In order to increase the reliability of transmission, load sharing technology can be used. The multiple links forming the IMA virtual link group are transmitted on different physical...

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Problems solved by technology

[0005] In order to solve the technical problems in the prior art, especially when the current IMA test equipment tests the channelized STM-1 IMA communication equipment, the problem that the load sharing IMA group in two pairs of STM-1 cannot be tested

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