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Message sending method, network node and system

A technology for sending network nodes and messages, applied in the field of communication

Active Publication Date: 2019-11-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of link delay, the message may be sent at the nth cycle time of a node, but may be received at the (n+1)th cycle time of the next hop node. Therefore, CQF Deterministic delay guarantee cannot be accurately realized in the process of message forwarding

Method used

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  • Message sending method, network node and system
  • Message sending method, network node and system
  • Message sending method, network node and system

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Embodiment Construction

[0058] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0059] CQF is a queue management method that uses dual queues to alternately send messages. Messages have an independent sending time period on each network node, and messages in the same time period after resource reservation are guaranteed to have sufficient bandwidth. , the packets between different time periods are isolated, and the packets have a certain delay when they are forwarded by each network node. Such as figure 1 As shown, each network node has two message queues, one is a message receiving queue, and the other is a message sending queue. The message receiving queue is used to receive the message sent by the previous hop network node to the current network node. The packet sending queue is used to send the cached packets to the next-hop network node. The roles of the message receiving queue and the message sending queue can be switched to each o...

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PUM

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Abstract

The invention discloses a message sending method, a node and a system. The controller acquires a forwarding delay requirement of the service flow and a destination address of the service flow, determines a forwarding path meeting the forwarding delay requirement, and determines a first cycle time cycle time number of forwarding the message by the forwarding path entry node and a second cycle timenumber of forwarding the message by the forwarding path intermediate node; the controller sends a first table entry to the entry node, wherein the first table entry comprises a serial number and a first cycle time number of the message, and the first table entry is used for indicating the entry node to send the message within the time corresponding to the first cycle time number; a second table entry is sent to the intermediate node, wherein the second table entry comprises the serial number of the message and a second cycle time number, the second table entry is used for indicating the intermediate node to send the message within the time corresponding to the second cycle time number. According to the scheme, the entry node and the intermediate node of the forwarding path forward the message in the corresponding cycle time, so that the delay guarantee of message forwarding determination can be realized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a message sending method, network node and system. Background technique [0002] Deterministic networking (DetNet) can provide highly reliable paths for applications. Deterministic networks can provide bounded delay guarantees and extremely low packet loss rates. The bounded delay guarantee means that during the end-to-end forwarding of packets, the packet forwarding delay is within a fixed range, that is, the packet forwarding delay must be within this delay range. Bounded delay is realized through end-to-end reserved bandwidth resource and queue management algorithm. Cyclic queuing and forwarding (cyclic queuing and forwarding, CQF) is a queue management method applied to deterministic networks in the prior art. The core of CQF technology is that a message is sent out at a certain cycle time of a node on the forwarding path, will be received at the same cycle time of the ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/875H04L45/74H04L47/56H04L45/121
CPCH04L47/56H04L45/121H04L47/28H04L45/302H04L45/70H04L45/74H04L47/24
Inventor 耿雪松陈国义
Owner HUAWEI TECH CO LTD