FTTH (fiber to the home) network based optical and wireless hybrid access system and hybrid access method

Abstract

The invention discloses an FTTH network based optical and wireless hybrid access system and a hybrid access method, and relates to the field of optical access. The hybrid access system comprises a GPON (gigabit passive optical network) local-side OLT (optical line terminal) device and an optical wiring unit, wherein the local-side OLT device is connected with the optical wiring unit through an optical fiber link which transmits a digital baseband signal and a wireless analog signal simultaneously; the GPON local-side OLT device comprises sixteen slot positions where PON (passive optical network) interface discs and local-side light carrier radio frequency units are inserted; and when N wireless access channels are in one optical fiber link direction, N is larger than or equal to 1 and smaller than or equal to 7, the local-side OLT device utilizes N local-side light carrier radio frequency units, one local-side light carrier radio frequency unit is taken as a master local-side light carrier radio frequency unit, and the other (N-1) local-side light carrier radio frequency units are taken as cascading local-side light carrier radio frequency units. According to the FTTH network based optical and wireless hybrid access system and the hybrid access method, optical resources of the PON can be reused, a design of a far-end radio frequency module is simplified, the size, the power consumption and the cost are reduced, and by virtue of wireless relay transmission, the wireless access is integrated into the FTTH network.

Description

technical field [0001] The present invention relates to the field of optical fiber access, in particular to an optical fiber and wireless hybrid access system and a hybrid access method based on an FTTH (Fiber To The Home, fiber to the home) network. Background technique [0002] From FTTC (Fiber To The Curb, Fiber To The Curb) to FTTB (Fiber To The Building, Fiber To The Building), and then to FTTH (Fiber To The Home, Fiber To The Home), fiber access is constantly approaching the user premises. FTTH has basically become the preferred access method for newly built communities. This access method, which is endowed as the ultimate solution, not only inherits the characteristics of optical fiber transmission with large communication capacity, low loss, and strong anti-electromagnetic interference ability, but also because of its full optical link Passive components are used in all roads and have the characteristics of simple layout and convenient maintenance. However, this acc...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology, and to provide a fiber and wireless hybrid access system and hybrid access method based on FTTH network, which can not only reuse the fiber resources in the passive optical network, but also simplify remote The design of the end radio frequency module reduces the volume of the remote radio frequency module, reduces the power consumption of the remote radio frequency module, greatly reduces the construction cost of the operator, and creates conditions for the deployment of a large number of pico base stations close to users, and on this basis Through microwave relay transmission, it solves the problem of access blind spots of optical fiber access in areas with complex terrain such as mountains and lakes, as well as places where existing important infrastructures cause difficulties in optical fiber deployment.

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