Far-end RF module and its method for transmitting signal

Abstract

The disclosed remote RF module comprises: a local signal process part (110), two serial-to-parallel conversion and transmission devices (1202a / b), two optical modules (1201a / b), and a control module (400) to detect fault of (110) and send directly signal from (1201a / b) to another (1201b / a) once (110) failure. This invention ensures continuity of signal transmission.

Description

technical field [0001] The invention relates to the field of radio frequency technology in communication systems, in particular to a remote radio frequency module and a signal transmission method thereof. Background technique [0002] With the development of wireless radio frequency technology, the development of the base station tends to separate the baseband processing and control part from the radio frequency part, thereby pulling the radio frequency part of the base station far away. In the base station, the baseband processing and control part is usually called the radio equipment controller (REC), the radio frequency part is called the radio equipment (RE), and the radio equipment formed by the remote radio part is called the remote radio unit (RRU) ). [0003] In the base station, a single REC can control multiple RRUs, which is realized by forming a topological connection structure such as a star, chain, tree or ring between the REC and the RRU. In these connection...

AI Technical Summary

Problems solved by technology

[0005] In a topology connection structure with multiple RRUs, the failure of an RRU node will cause the interruption of signal transmission through the RRU node, which will affect the subsequent RRU nodes, so that the RRU node that has not failed cannot communicate with REC or other RRU nodes. to communicate

For example, in figure 2 In the shown chain topology connection structure, when the local signal processing part of the second RRU node 202 fails, the RRU node 202 cannot process the signals input to it, nor can it output signals to other devices, resulting in Subsequent RRU nodes 203 and 204 cannot obtain the signal output by REC200 or RRU node 201, and cannot transmit the signal to REC200 or RRU node 201 through RRU node 202

For another example, in image 3 In the shown ring topology connection structure, if both the RRU node 302 and the RRU node 304 fail, the RRU node 303 cannot receive the signals output by the REC 300 and the RRU node 301 from either side, nor can the signal generated by itself Send to REC300 or RRU node 301

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