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Message forwarding method, device and system

A technology of message forwarding and network equipment, which is applied in the field of communication, can solve the problems of clock jitter increasing the difficulty of realizing accurate time synchronization, the whole network equipment increasing the difficulty and cost of network deployment, and achieving the effect of improving calculation accuracy

Pending Publication Date: 2021-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the network scenario where the CQF mechanism is implemented, the precise time synchronization of the entire network equipment increases the difficulty and cost of network deployment. In addition, the accumulation of clock jitter in the communication link increases the difficulty of realizing precise time synchronization

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  • Message forwarding method, device and system
  • Message forwarding method, device and system
  • Message forwarding method, device and system

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Embodiment Construction

[0052] In the following, specific examples will be used to describe in detail respectively.

[0053] figure 1 It is a schematic structural diagram of a communication network according to an embodiment of this application. Such as figure 1Said, the communication network includes a first network device and a second network device. In a possible implementation manner, the communication network is a fully distributed time-sensitive network (time-sensitive networking, TSN). For the network architecture of the TSN of the fully distributed model, please refer to the relevant explanations in "Section 46. Time Sensitive Network (TSN) Configuration" of IEEE 802.1Qcc-2018. In an implementation manner of the present application, the message transmission direction is: sending a message from the second network device to the first network device. The second network device includes a second egress port. The first network device includes a first ingress port and a first egress port. Wher...

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Abstract

The invention discloses a message forwarding method, device and system. The method comprises: a first network device receiving a first message sent by a second network device via a second output portof the second network device, the first message being used for measuring a phase difference, wherein the phase difference is the phase difference between the switching time of one first cache in a plurality of first caches of a first output port of the first network equipment and the switching time of one second cache in a plurality of second caches of a second output port of the second network equipment under the condition of considering the link delay; the first network device determines a phase difference according to the first message; , the first network equipment schedules a second datamessage sent by the first output port according to the phase difference. Therefore, the first network device and the second network device realize queuing and forwarding of data messages without depending on time synchronization.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a message forwarding method, device and system. Background technique [0002] Audio video bridging (AVB) is a new Ethernet standard. AVB-related standards are formulated by the AVB task group under the 802.1 working group of the Institute of Electrical and Electronics Engineers (IEEE). In 2012, the AVB task group was officially renamed as the time-sensitive networking (TSN) task group. TSN mainly involves stream reservation protocol (stream reservation protocol, SRP), precision time protocol (precision time protocol, PTP), and flow control (trafficshaping). TSN can be applied in network scenarios with low-latency requirements or based on time-synchronized data transmission, such as audio and video transmission, automotive control, industrial control, and commercial electronics. [0003] TSN technical standards can be divided into four parts: data plane, co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
CPCH04J3/0667H04L47/283H04L47/56H04L49/25H04L49/30H04J3/0658
Inventor 陈李昊王童童
Owner HUAWEI TECH CO LTD