Time slot cross path configuration method, computer device and readable medium

A technology of time slot configuration and time slot crossing, applied in the field of communication, can solve the problems of inability to adopt ASON solution, difficult to network across manufacturers, low configuration efficiency, etc., to achieve the effect of automatic creation, easy interoperability, and high configuration efficiency

Active Publication Date: 2022-02-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the rise of the new generation of 5G networks, an MTN (Metro Transport Network, Metro Transport Network) channel forwarding based on FlexE (Flexible Ethernet) Shim layer 66-bit code block time slot interleaving is proposed in the mobile backhaul network. path (G.mtn), but the protocol deployment is simplified in the 5G mobile backhaul network, and the label distribution protocol is no longer introduced. Therefore, the ASON solution cannot be adopted, and the ASON solution is for SDH / OTN networks, even in 5G The label distribution protocol deployed in the mobile backhaul network also needs to be modified to be applicable to the MTN network
However, if a method similar to traditional SDH is used to create an end-to-end time slot cross path, there are also problems such as complex configuration, low configuration efficiency, and difficulty in cross-vendor networking.

Method used

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  • Time slot cross path configuration method, computer device and readable medium
  • Time slot cross path configuration method, computer device and readable medium
  • Time slot cross path configuration method, computer device and readable medium

Examples

Experimental program
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Effect test

Embodiment 1

[0156] Embodiment 1 is a unidirectional cross-slot service path in the domain. It is assumed that there is an SPN or IPRAN network using FlexE technology, which supports the cross-slot service forwarding path of the MTN Channel described in G.mtn. The network topology is as follows Figure 9a As shown, all nodes are in an ISIS routing domain. To provide a one-way cross-slot service in the network, the service path is A->B->C->D->Z, and the bandwidth is 30M (accounting for 3 time slots). This service path requires MTN Channel to provide A hard-isolated, deterministically delayed forwarding path.

[0157] Perform initial configuration according to the SR-MPLS network, assign Node-SID (the node identifier that the forwarding path passes through) to the network node, and assign Adj-SID (the link identifier that the forwarding path passes through) to the link, such as Figure 9b As shown, a centralized controller is used to calculate the forwarding path.

[0158] Configure the L2...

Embodiment 2

[0168] Embodiment 2 is an intra-domain bidirectional time slot cross service path. On the basis of embodiment 1, it is required to create a bidirectional time slot cross service path, that is, after the user specifies node A and node Z, he needs to create A->B- >C->D->Z and Z->D->C->B->A are two bidirectional time-slot cross service paths with the same path.

[0169] The main steps of embodiment 2 and embodiment 1 are the same, and the main difference is in steps (5) and (6). In step (5) of Embodiment 2, in addition to configuring the time slot cross relationship of incoming link + incoming time slot -> outgoing link + outgoing time slot to the forwarding plane, nodes B, C, and D also Configure the reverse cross relationship, that is, outbound link + outbound time slot --> inbound link + inbound time slot, to the forwarding plane.

[0170] In step (6) of Embodiment 2, the service mapping relationship and For the reverse service demapping relationship, configure the service m...

Embodiment 3

[0172] Embodiment 3 is to allocate end-to-end time slots in the domain according to the intention of the first node. On the basis of embodiment 1, in order to achieve the lowest end-to-end delay or other special requirements, it is hoped that the end-to-end use the same time slot number as much as possible At the same time, the OSPF protocol extension is used to realize the transmission of link time slot allocation information.

[0173] The main steps of embodiment 3 are the same as those of embodiment 1, the main difference is in steps (1) and (2). In the step (1) of embodiment 3, at node A, to OSPF protocol extension, as Figure 8 As shown, a new LSA is defined in the OSPF protocol (assuming that the LSA type is 15, indicating a time slot cross LSA), which describes a complete time slot cross forwarding path. Node A configures outbound time slots 2-1 / 2-5 / 2-9, and expects other nodes to also allocate the same time slots. Therefore, as Figure 13 As shown, fill in 2-1 / 2-5 / 2-...

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Abstract

The present disclosure provides a time slot cross path configuration method, the method comprising: receiving forwarding path description information sent by a controller; sending a first flood message carrying path time slot configuration information in the IGP domain where the network node is located, Make network nodes on the forwarding path configure link time slots according to the path time slot configuration information to form a time slot cross path; wherein the path time slot configuration information is generated according to the forwarding path description information, including the network Link time slots of nodes on the forwarding path; the embodiments of the present disclosure can realize the automatic creation of time slot crossing service paths, facilitate cross-domain and cross-vendor interoperability, do not need to deploy a label distribution protocol, and the protocol deployment is simpler and the configuration efficiency is higher. The embodiment of the present disclosure also provides a computer device and a readable medium.

Description

technical field [0001] The present disclosure relates to the technical field of communication, and in particular to a time slot cross path configuration method, computer equipment and a readable medium. Background technique [0002] The traditional SDH (Synchronous Digital Hierarchy, Synchronous Digital System) network provides a TDM (Time Division Multiplexing) service, which provides users with a service forwarding path based on time slot crossover, and the forwarding path is centralized through the SDH network management The formula calculates the path and allocates the link time slot. This service provisioning method is complex to configure (the time slot cross relationship is visible to users), and the configuration efficiency is low (the configuration needs to be delivered to all nodes on the forwarding path), and it is difficult to realize flexible networking across vendors (different vendors’ devices are in different management domains, cannot achieve end-to-end pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/52H04W72/04
CPCH04L45/32H04W72/0446H04L45/04H04Q11/0001
Inventor 温建中周华东陈然
Owner ZTE CORP
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