Method and equipment for calibrating reference antenna between two base stations in CoMP (Coordinated Multi-Point) system and base station

An antenna calibration, inter-base station technology, applied in transmission systems, transmission monitoring, electrical components, etc., can solve problems such as large errors, affecting the accuracy of detection channels, and large calibration errors

Inactive Publication Date: 2011-08-31
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The second problem is that the channel from the user to all the base stations in the CoMP transmission system is not necessarily good, which will affect the accuracy of the detection channel fed back to the base station through the air interface
If there is a large error between the channel detected by the user and the actual channel, there will inevitably be a large error in the final calibration

Method used

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  • Method and equipment for calibrating reference antenna between two base stations in CoMP (Coordinated Multi-Point) system and base station
  • Method and equipment for calibrating reference antenna between two base stations in CoMP (Coordinated Multi-Point) system and base station
  • Method and equipment for calibrating reference antenna between two base stations in CoMP (Coordinated Multi-Point) system and base station

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Embodiment Construction

[0017] The method for antenna calibration between two base stations proposed by the embodiment of the present invention is: use a static method to determine the cooperative calibration node in the network, the base station to be calibrated and the cooperative calibration node obtain the average signal-to-interference-noise ratio between each other, and the cooperative calibration node feeds back to the home base station The average channel quality information, the central scheduler selects the calibration path between the two base stations, on the calibration path, selects a node as the starting node of the calibration (using method 2) and starts the calibration of the antennas selected by the adjacent two nodes on the calibration path .

[0018] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

[0019] figure 2 It is a flow chart of the antenna calibration method between two base stations in ...

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Abstract

The invention discloses a method for calibrating a reference antenna between two base stations in a CoMP (Coordinated Multi-Point) system, a device for implementing the method and a base station comprising the calibrating device. The method comprises the following steps: determining a coordinated calibration node in a network; acquiring an average SINR (signal-to-interference-and-noise-ratio) by a base station to be calibrated and the coordinated calibration node; feeding average channel quality information back to a home base station by the coordinated calibration node; selecting a calibration path between two base stations by a centre scheduler; on the calibration path, choosing a node as an initial node of calibration and starting to calibrating an antenna selected by two neighboring nodes on the calibration path. By adopting the method provided by the invention, the reference antenna between two base stations can be calibrated by utilizing an air interface to feed back less information, and calibration between base stations can be better realized.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for calibrating antennas between base stations in a CoMP system, a calibrating device for realizing the method, and a base station including the calibrating device. Background technique [0002] In a traditional cellular system with co-frequency networking, users at the edge of a cell will be interfered by signals from adjacent cells, which severely limits the service quality and throughput of edge users. The multi-base station cooperative multi-point transmission system refers to multiple base stations (or multiple remote radio frequency nodes) jointly receiving user signals through cooperation and combining the received signals (uplink: users transmit signals to the base station, and the base station receives signals), or Through cooperation, user signals are weighted differently and then jointly transmit weighted user signals (downlink: the base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04B17/12
Inventor 耿健黄帆王亚峰裕华龙
Owner BEIJING UNIV OF POSTS & TELECOMM
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