Method and system for data transmission among Ir interfaces of double-module base station

A technology for data transmission and dual-mode base station, applied in the direction of optical fiber transmission, optical fiber radio, etc., can solve the problems of insufficient utilization of optical fiber, increase in construction cost, increase in bandwidth demand, etc., and achieve the effect of reducing deployment cost and bandwidth.

Inactive Publication Date: 2014-07-02
CHINA MOBILE GROUP JIANGSU +1
View PDF10 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this deployment also brings two problems: First, high-speed orthogonal modulation (IQ) data needs to be transmitted between the BBU and the RRU, which requires high bandwidth. TD-LTE8 antenna 20MHz single carrier requires 9.8304Gbps transmission bandwidth, which consumes a lot of Fiber resources between the BBU and RRU, and with the use of broadband RRU, such as 40M bandwidth RRU, this bandwidth demand will increase exponentially
The 6.144G optical module that is widely used now requires two pairs of optical fiber transmission. Even if a 10G optical module is used, two pairs of optical fiber transmission are required in a dual-mode scenario, and the cost increases.
[0006] (2) Insufficient use of optical fiber: in the existing technical solutions, a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for data transmission among Ir interfaces of double-module base station
  • Method and system for data transmission among Ir interfaces of double-module base station
  • Method and system for data transmission among Ir interfaces of double-module base station

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] The basic idea of ​​the present invention is: data compression is used for transmission, the compressed data is transmitted in a dual-mode mixed transmission mode, and a single-core optical fiber is used for bidirectional transmission on the basis of compression and dual-mode mixed transmission.

[0038] The method for data transmission between Ir interfaces of dual-mode base stations of the present invention includes: adjusting the initial quadrature modulation IQ data to be transmitted to the expected target value by using automatic gain control AGC factor, and compressing and transmitting according to the compression ratio.

[0039] Further, adjusting the initial IQ data to be transmitted to an expected target value using an AGC factor is specifically: uniformly adjusting the IQ data to be transmitted with different receiving or transmitting power to the same power.

[0040] Further, the compressed transmission is specifically: the compressed IQ data is carried on the AxC tr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and system for data transmission among Ir interfaces of double-module base station. The method comprises the steps that IQ modulation data to be transmitted are adjusted to an expected target value by adopting an AGC factor, are compressed according to a compression ratio and then are transmitted. An AGC module in the system is used for adjusting the IO modulation data to be transmitted to the expected target value by adopting the AGC factor. Through the adoption of the method and system for the data transmission among the Ir interfaces of the double-module base station, bandwidth occupied by data transmission between a BBU and an RRU is reduced, optical fiber occupied amount is reduced, and network deployment cost is lowered.

Description

technical field [0001] The present invention relates to the field of optical fiber data transmission between a base band unit (BBU, Base Band Unit) and a radio frequency unit (RRU, Radio Remote Unit) of mobile communication, in particular to a method and system for data transmission between Ir interfaces of a dual-mode base station. Background technique [0002] At present, wireless communication equipment generally adopts the remote baseband mode of BBU+RRU, and the interface between the BBU and the RRU is called an Ir interface. For example, baseband remote mode, such as 3G Time Division Synchronous Code Division Multiple Access (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access) and 4G Time Division Long Term Evolution (TD-LTE, Time Division Long Term Evolution) , the base stations are deployed in a distributed manner, and the BBU and RRU are directly connected through optical fibers. The advantage of this deployment is that the BBU can be placed in the e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H04B10/2575
Inventor 蔡伟明戴海兵陈聃青方乐明王浩娟林兴侯晓明孙咏葛磊
Owner CHINA MOBILE GROUP JIANGSU
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap