Channel correction method of remote radio unit (RRU), relevant equipment and system

Abstract

The embodiment of the invention discloses a channel correction method of a remote radio unit (RRU), relevant equipment and a system. The technical solution provided by the embodiment of the invention is that correction signals are interacted through a service channel of a first RRU and a correction reference channel of a second RRU, a compensation factor for channel compensation between the RRUs is acquired according to the interacted correction signals, and service signal compensation is carried out by combining a self-correcting RRU and the compensation factor, thereby being conducive to meeting the requirement of uplink and downlink reciprocity after a plurality of the RRUs are spliced. The mechanism disclosed by the embodiment of the invention can realize splicing of a plurality of the RRUs so as to obtain more service channel RRUs, thereby being conducive to meeting higher communication requirements and giving consideration to requirements of the cost and system capacity expansion. For example, two 2T2Rs in the prior art are spliced into one 4T4R, thereby utilizing the existing investment reasonably.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201210592421.9 and the title of the invention "Channel Calibration Method for Remote Radio Frequency Unit and Related Equipment and System" filed with China Patent Office on December 31, 2012, the entire contents of which are incorporated by reference incorporated in this application. technical field [0002] The invention relates to the field of communication technology, in particular to a channel calibration method of a remote radio frequency unit and related equipment and systems. Background technique [0003] In the time division duplex (TDD, Time Division Duplexing) system, the base station estimates the uplink channel by detecting the sounding reference signal (SRS, Sounding Reference Signal) signal sent by the user terminal (UE, User Equipment), and uses the TDD system uplink and downlink channel Reciprocity, using the uplink channel estimation result as the downl...

AI Technical Summary

Problems solved by technology

For example, the 2T2R RRU was used before (that is, the RRU has 2 transmit channels and 2 receive channels), and later, with the need for capacity expansion, it was found that the 4T4R RRU (that is, the RRU has 4 transmit channels and 4 receive channels) can be updated. To meet the needs, if all are replaced to 4T4R in this scenario, the investment cost of the existing 2T2R RRU will be wasted

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