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Method, device and equipment for reducing signal crosstalk

A signal crosstalk and signal technology, applied in the field of communication, can solve the problem of low transmission capacity of indoor distributed base station system, achieve the effect of reducing indoor rewiring problems, improving and extending the coverage distance, and reducing the cost of transformation and upgrading

Active Publication Date: 2020-06-05
CHINA MOBILE GROUP SICHUAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present application provide a method, device, device, and computer storage medium for reducing signal crosstalk, which are used to solve indoor distributed base station systems that cause far-end Problem of low transmission capacity of distributed base station system

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  • Method, device and equipment for reducing signal crosstalk
  • Method, device and equipment for reducing signal crosstalk
  • Method, device and equipment for reducing signal crosstalk

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Embodiment Construction

[0103] The characteristics and exemplary embodiments of various aspects of the application will be described in detail below. In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only configured to explain the application, not to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0104] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily ...

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Abstract

The embodiment of the invention provides a method, a device and equipment for reducing signal crosstalk. The method can comprise the following steps that: a baseband unit (BBU) establishes frame synchronization of an uplink signal and a downlink signal between the BBU and a radio remote unit (RRU) according to a preset pilot frequency sequence; the BBU performs MIMO equalization processing on theuplink signal; the BBU pre-codes a downlink signal sent to the RRU according to channel state information (CSI) and pre-coding matrix information sent by the RRU, so that the RRU determines an averageerror vector magnitude (EVM); and when the EVM is less than a preset threshold, the BBU updates the precoding matrix information so as to precode the downlink signal according to the updated pre-coding matrix information. According to the application, the downlink coding technology and the uplink equalization technology are utilized, and the crosstalk between the network cables is fully utilizedto carry out combined signal processing, so that the problem that the transmission capacity is reduced due to the crosstalk between the network cables when transmitting and receiving channels are in the same frequency and the RRU in an indoor distributed base station system returns signals to the BBU by utilizing the network cables is solved.

Description

technical field [0001] The present application belongs to the technical field of communication, and in particular relates to a method, device, equipment and computer storage medium for reducing signal crosstalk. Background technique [0002] At present, indoor distributed base station systems such as figure 1 As shown, it mainly includes a baseband unit (baseband unit, BBU), a remote signal forwarding unit (remote hub, RHUB) and a radio remote unit (radio remote unit, RRU). Among them, the BBU and the RHUB are connected by optical fibers, and the RHUB and the RRU are connected by a super-category five network cable (CAT5e) or a six-category network cable (CAT6) for power supply, and the data return task is completed. Since the CAT5e or CAT6 cables connecting the RHUB and RRU are unshielded network cables, one RHUB can support up to 16 RRUs. Therefore, the network cables are usually tightly bundled at the entrance of the cabinet where the RHUB is located, and the crosstalk b...

Claims

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Application Information

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IPC IPC(8): H04B7/0456H04B7/0413H04B3/32H04W88/08
CPCH04B3/32H04B7/0413H04B7/0456H04W88/085
Inventor 周键杨爽刘迅许鹏陈可周琴
Owner CHINA MOBILE GROUP SICHUAN