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Reducing synchronization errors in common public radio interface (cpri) passive optical networks (pons)

An optical network unit and synchronization message technology, which is applied in the field of reducing synchronization errors in a common public radio interface (CPRI) passive optical network (PON), and can solve the problems of high aggregated channel data rate and complex communication system.

Active Publication Date: 2020-11-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high data rate of the aggregated channel will inevitably lead to the complexity of the communication system

Method used

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  • Reducing synchronization errors in common public radio interface (cpri) passive optical networks (pons)
  • Reducing synchronization errors in common public radio interface (cpri) passive optical networks (pons)
  • Reducing synchronization errors in common public radio interface (cpri) passive optical networks (pons)

Examples

Experimental program
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Embodiment Construction

[0022] It should be understood at the outset that, although an illustrative implementation of one or more embodiments is provided below, the disclosed systems and / or methods may be implemented using any number of techniques, whether currently known or in existence. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but rather be within the scope of the appended claims and their equivalents Modified within the full range of .

[0023] The following abbreviations and acronyms apply:

[0024] ADC: analog-to-digital conversion, analog-to-digital converter

[0025] ASIC: application-specific integrated circuit (application-specific integrated circuit)

[0026] BBU: baseband unit (baseband unit)

[0027] CoMP: coordinated multi-point

[0028] CPRI: Common Public Radio Interface

[0029] C-RAN: cloud radio access network (c...

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Abstract

The first device includes: a processor for generating a first synchronization message; a transmitter coupled to the processor and for transmitting the first synchronization message to a second device at a first wavelength; and a receiver coupled to to the processor and for receiving, in response to the first synchronization message, a second synchronization message from the second device at a second wavelength, the first wavelength and the second wavelength being based on the second synchronization A reduction in the delay difference between a message and the first synchronization message, and the processor is further configured to calculate a timing offset between the first device and the second device based on the reduction , TO).

Description

Background technique [0001] RAN is the network between mobile devices and the core network. In the RAN, the radio base station located on the side of the remote cell site performs digital baseband processing. However, in C-RAN, the RRU replaces the radio base station, and the centralized BBU located at the central site near the core network performs digital baseband processing. The RRU is connected to the antenna for wireless RF transmission and reception. The RRU requires limited digital baseband processing. [0002] In C-RAN, the fronthaul connects the BBU to the RRU. CPRI, a fronthaul standard, describes digitizing radio channels to create digitized channels, aggregating digitized channels to create aggregated channels, and communicating aggregated channels using aggregated fiber channels or aggregated microwave channels. The high data rate of the aggregation channel inevitably leads to the complexity of the communication system. Contents of the invention [0003] In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2507
CPCH04B10/2507H04B10/25754H04B10/27H04J3/0667H04J14/0227H04J14/0282H04Q11/0062H04Q11/0067H04Q2011/0064H04L7/0075
Inventor 刘翔弗兰克·埃芬博格曾怀玉
Owner HUAWEI TECH CO LTD