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Signal interconnecting method based on WDM (wavelength division multiplex) and baseband unit

A baseband unit and signal technology, applied in the field of communication, can solve problems such as increasing the difficulty of PCB design, increasing the complexity of system design, and increasing manufacturing costs.

Active Publication Date: 2015-05-13
WUHAN HONGXIN TELECOMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a WDM-based signal interconnection method and baseband unit to overcome the increased system design complexity caused by increasing the number of signal transmission channels or using high-speed electrical signal transmission in the prior art, Increase the manufacturing cost, increase the difficulty of PCB design, and the signal integrity and EMC problems caused by the inevitable high-speed electrical signal transmission

Method used

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  • Signal interconnecting method based on WDM (wavelength division multiplex) and baseband unit
  • Signal interconnecting method based on WDM (wavelength division multiplex) and baseband unit
  • Signal interconnecting method based on WDM (wavelength division multiplex) and baseband unit

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Embodiment 1

[0077] A signal interconnection method based on wavelength division multiplexing WDM disclosed in this application is mainly applied to the indoor baseband processing equipment BBU, the BBU equipment such as figure 1 As shown, it mainly includes:

[0078] The baseband processing board group 1 is provided with the board 2 of the main control board, the backplane board 3, the power supply board (not shown in the figure) and the fan board (not shown in the figure), the baseband processing board The card group 1 includes at least two baseband processing boards. In this application, the baseband processing board group 1 contains three baseband processing boards as an example. The figure shows the first baseband processing board 11, the second The baseband processing board 12 and the third baseband processing board 13 are not limited thereto, and may include more baseband processing boards, usually two to six baseband processing boards.

[0079] The baseband processing board group ...

Embodiment 2

[0095] Based on the above-mentioned WDM-based signal interconnection method disclosed in Embodiment 1 of the present application, the interconnection between baseband processing boards, and the interconnection between baseband processing boards, main control boards and backplane boards are realized. Afterwards, the application also discloses based on figure 1 The shown cooperative scheduling method of the main control board for each baseband processing board using the SRIO interface to transmit baseband data mainly includes the following steps:

[0096] Step S201, the main control board monitors the baseband data flow of each baseband processing board in the baseband processing board group, when the baseband data flow of any baseband processing board in the baseband processing board group is greater than a threshold , determining that the baseband processing board whose baseband data traffic is greater than the threshold is a data congestion baseband processing board;

[0097...

Embodiment 3

[0101] Based on the WDM-based signal interconnection method disclosed in Embodiment 1 and Embodiment 2 of the above application, such as figure 1 Each of the baseband processing boards shown is divided into an FPGA area and an Ethernet switching area; each baseband processing board is executing the above figure 2 During the illustrated step S101, it mainly includes the following steps:

[0102] Step S301, the baseband processing board introduces the parallel high-speed signal into the FPGA area, performs parallel-to-serial processing on the parallel high-speed signal in the FPGA area, and obtains a first signal;

[0103] Step S302, the baseband processing board introduces the low-speed signal into the FPGA area for time-division multiplexing processing to obtain a second signal;

[0104] Step S303, the baseband processing board introduces the received serial high-speed signal into the Ethernet switching area for forwarding.

[0105] Such as figure 1 Each of the baseband pr...

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Abstract

The embodiment of the invention discloses a signal interconnecting method based on a WDM (wavelength division multiplex) and a baseband unit. The method comprises the following steps: dividing a to-be-interconnected signal into a low-speed signal, a parallel high-speed signal and a serial high-speed signal through each baseband processing board card, performing parallel to series processing on the parallel high-speed signal, performing time division multiplexing processing on the low-speed signal, respectively modulating various obtained signals into a gamma A light carrier, a gamma B light carrier and a gamma C light carrier through electric / optical conversion, coupling the gamma A light carrier, the gamma B light carrier and the gamma C light carrier to the same optical fiber based on the WDM technology, and transmitting to the FPGA on the backboard board card to perform corresponding processing through the optical fibers. According to the signal interconnecting method, the baseband processing board card is realized based on the WDM technology, the main control board card and the backboard board are in signal interconnection, so that the interconnecting complexity of interfaces between the board cards is greatly lowered, the signal integrity and the EMC capacity are effectively improved, and the application of large-data throughput capacity is facilitated.

Description

technical field [0001] The present invention relates to the technical field of communication, and more specifically, relates to a WDM (Wavelength Division Multiplexing, wavelength division multiplexing)-based signal interconnection method and a baseband unit. Background technique [0002] With the rapid development of wireless communication technology, the demand for bandwidth is also increasing. In order to support large-scale communication, the existing technology is to interconnect signals between different printed circuit boards (PCB, Printed Circuit Board) to Meet large throughput requirements. Since the number and rate of interconnection channels between PCB boards restrict the data throughput of the inter-board interconnection interface, it is necessary to consider the transmission bandwidth of the interface when designing the interconnection between PCB boards. [0003] At present, on the baseband unit (BBU, BaseBand Unit), the signal interconnection between the bus...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04B10/25H04L45/60
Inventor 张明陈印锋朱宇霞
Owner WUHAN HONGXIN TELECOMM TECH CO LTD