PTN networking architecture based on 5G bearer network

Abstract

The invention provides a PTN networking architecture based on a 5G bearer network, and belongs to the technical field of transmission networks. The architecture comprises a plurality of subsystems connected through a convergence ring; wherein the convergence ring comprises two backbone convergence points, each subsystem comprises two convergence points and an access ring, and the convergence ringis connected with the access ring in each subsystem through the convergence point in each subsystem; and the convergent point in each subsystem is connected with the backbone convergent point in the convergent ring. The embodiment of the invention provides a networking architecture. The method comprises the following steps: taking a convergence point of each access ring and a bearing each access ring as a subsystem; and connecting the convergence point in each subsystem with the backbone convergence point in the convergence ring, so that the bandwidth shared by a plurality of access rings canbe changed into the exclusive bandwidth of each access ring, the bandwidth waste caused by bandwidth sharing is avoided, and the effective utilization rate of the bandwidth is improved. In addition, compared with a current networking architecture, the method is easier to implement.

Description

technical field [0001] The present invention relates to the field of transport network technology, and more specifically, to a PTN networking architecture based on a 5G bearer network. Background technique [0002] TD-LTE (TD-LTE, Time Division Long Term Evolution, Time Division Long Term Evolution), as one of the mainstream technologies of IMT-Advance, will enable mobile networks to truly enter the era of mobile broadband. Compared with the existing 2G and 3G mobile communication systems, TD-LTE puts forward higher requirements for the backhaul network in terms of high bandwidth, low delay, horizontal forwarding, and time-synchronized ground transmission. [0003] First, bandwidth requirements have grown from a few megabytes or tens of megabytes in the 2G / 3G era to hundreds of megabytes in the LTE era. [0004] Second, LTE needs to provide flexible QoS and stricter end-to-end delay. According to 3GPP regulations, the end-to-end one-way delay from the user terminal to the s...

AI Technical Summary

Problems solved by technology

[0005] Third, LTE introduces interconnection between adjacent base stations (X2 interface) and base station multi-homing (S1-Flex) requirements, resulting in the transformation of the backhaul network from point-to-point converged network to point-to-multipoint or multipoint-to-multipoint The existing 2G / 3G backhaul network cannot meet this horizontal forwarding requirement

However, the current PTN network architecture needs to transmit service network signals based on the service path between X2 stations, so the transmission delay is relatively high.

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