Common public radio interface (CPRI) frame-based wavelength division multiplexing-passive optional network (WDM-PON) mobile and fixed integrated access system

Abstract

The invention discloses a common public radio interface (CPRI) frame-based wavelength division multiplexing-passive optional network (WDM-PON) mobile and fixed integrated access system, and relates to the field of PON access. The mobile and fixed integrated access system comprises a mobile and fixed integrated access optical line terminal (OLT), an optional distribution network (ODN) and a plurality of mobile and fixed integrated access optional network units (ONUs); the mobile and fixed integrated access OLT is connected with the mobile and fixed integrated access ONUs through the ODN; the mobile and fixed integrated access OLT comprises a local end relay framing module, N parallel local end WDM-PON optical modules and a coupler, wherein N is a positive integer and N is greater than or equal to 8 and is less than or equal to 64; the local end relay framing module is connected with the coupler through the N parallel local end WDM-PON optical modules; each mobile and fixed integrated access ONU comprises a far end framing module and a far end WDM-PON optical module; and the coupler is connected with each WDM-PON optical module through the ODN. By the CPRI frame-based WDM-PON mobile and fixed integrated access system, mobile service and fixed network service can be transmitted at the same time; deep coverage of mobile radio signals of an operator can be realized; and the trunk fiber resources accessed in a network can be saved.

Description

technical field [0001] The present invention relates to the field of PON (Passive Optical Network, Passive Optical Network) access, in particular to a WDM-PON (Wavelength Division Multiplexing Passive Optical Network, Wavelength Division Multiplexing Passive Optical Network) based on CPRI (Common Public Radio Interface, Common Public Radio Interface) frame Division multiplexing passive optical network) mobile fixed integrated access system. Background technique [0002] As an important part of the optical fiber communication network, the PON access network has broad application prospects. Existing EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network) and GPON (Gigabit-Capable Passive Optical Network, Gigabit-Capable Passive Optical Network) systems can only carry fixed network signals and cannot transmit mobile services. In the existing WDM-PON, each ONU (Optical Network Unit, optical network unit) uses a pair of uplink and downlink wavelengths, and the ...

AI Technical Summary

Problems solved by technology

But C-RAN can only carry digital wireless mobile signals similar to CPRI frames

Due to limited optical fiber resources, it is often difficult to find available optical fiber cables in practical applications

[0003] With the continuous development of communication services, people's demand for integrated transmission of mobile services and fixed network services is becoming more and more obvious. However, traditional indoor mobile services generally have defects such as insufficient deep coverage, and the existing optical access system cannot meet the simultaneous requirements. Delivering market demand for mobile and fixed-line services

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