Method and system for processing multi-antenna signal

A multi-antenna and signal technology, applied in the field of communication, can solve the problems of high cost, high BBU cost, and short transmission distance, and achieve the effects of cost reduction, easy expansion, flexible networking, and improved capacity expansion

Active Publication Date: 2013-04-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Claims
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Problems solved by technology

However, the cost of the BBU is relatively high, which brings pressure to the expansion work
[0005] It can be seen that the existing technology supports more signal volumes by superimposing analog signals to achieve coverage without blind spots. This method has the problems of short transmission distance and large interference by noise signals
Or, the existing technology supports more antennas by adding BBUs to achieve coverage without blind spots, which makes the cost of network construction and maintenance higher

Method used

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  • Method and system for processing multi-antenna signal
  • Method and system for processing multi-antenna signal
  • Method and system for processing multi-antenna signal

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Embodiment Construction

[0060] The embodiment of the present invention enables the BBU in the distributed base station system to support more antennas by combining multiple digital signals.

[0061] The basic technical solution of this embodiment is: in the uplink (UL), the multi-channel digital signals with the same subcarrier are vector superimposed according to the same time position, so as to be combined into one digital signal; and in the downlink (DL) In the process, one digital signal is copied into multiple digital signals, which are respectively mapped to each port for transmission. Wherein, the number of multiple digital signals to be copied depends on the number of corresponding ports.

[0062] see figure 1 In this embodiment, the flow of the method for the RRU to combine multiple digital signals is as follows:

[0063] Step 101: Convert multiple analog signals received from multiple antennas into corresponding digital signals, and obtain the corresponding relationship between multiple a...

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Abstract

A method for processing signals of multiple antennas is disclosed.The method makes a single baseband unit(BBU) supporting multiple antennas which exceed itselfs design capability in a distributed base station system.The developing demands of communication field is satisfied, and the cost of building network is reduced. The method includes: a radio frequency remote unit(RRU) converting the received multiple ways of analog signals from multiple antennas to corresponding digital signals, the RRU making vectors accumulation to the multiple digital signals which are corresponding to a same sub-carrier according to a same position of time, combining the multiple ways of digital signals to a single way of digital signal. A system of distributed base station, a BBU, a baseband interface unit and a RRU are also disclosed.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for processing multi-antenna signals. Background technique [0002] With the rapid development of communication users and communication services, the number of existing antennas can no longer meet the demand. In order to expand the communication system, one way is to increase the number of antennas, and the other way is to combine multiple signals into one signal . [0003] In traditional base station systems, analog signals are transmitted between the baseband and transceivers. The analog signal can be superimposed directly through the transmission line and sent to the baseband side for processing. However, during the transmission of the analog signal, the analog signal will continue to attenuate as the transmission distance increases. In the process of long-distance transmission of analog signals, relay equipment (such as dry amplifier stations) is usually used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W92/02H04B7/04
CPCH04B7/0613
Inventor 邹素玲李军王洪波范炬
Owner DATANG MOBILE COMM EQUIP CO LTD
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