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Scheduling of data traffic

A flow scheduling and flow technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as real-time constraints, jitter accumulation and/or lack of resources, violation of time constraints, etc.

Active Publication Date: 2020-05-08
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Additionally, real-time constraints can occur where the latency of packet transmission varies, e.g., packet loss and / or violation of time constraints
Specifically, variations in delay may occur, for example, due to jitter accumulation and / or lack of resources (such as bandwidth) at one or more nodes

Method used

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  • Scheduling of data traffic
  • Scheduling of data traffic
  • Scheduling of data traffic

Examples

Experimental program
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Embodiment Construction

[0038] figure 1 A network N with a linear topology is shown, that is to say network nodes B1 , B2 , B3 , B4 are connected in a linear fashion (with open ends). The network nodes B1 , B2 , B3 , B4 are connected via transmission lines via which data packets can be transmitted and / or received. The network nodes B1 , . . . , B4 can transmit and / or receive data packets in a synchronous manner, eg via a transmission line. Other network nodes, such as bridges, may be present in network N, but may not be part of the path through which one or more data packets are transmitted. For example, according to IEEE 802.1Q, the network N may be a VLAN, ie part of a larger network.

[0039] figure 2 A network N with a ring topology is shown, ie network nodes B1 , B2 , B3 , B4 are connected in a circle. The network nodes B1 , B2 , B3 , B4 are connected via transmission lines via which data packets can be transmitted and / or received. The network nodes B1 , . . . , B4 can transmit and / or rece...

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Abstract

A method of scheduling traffic in a network node (B2), wherein a cyclic traffic schedule (C1, C2) for a first traffic class (RT), e.g. a first real time traffic class, comprises a reception phase (T01) and a transmission phase (T00), the method comprising and / or initiating the step of: setting (S1) the transmission phase (T00) of the network node (B) to coincide with the reception phase (T01) of at least two neighboring network nodes (B1, B3).

Description

technical field [0001] The invention relates to a method for scheduling traffic in a network node, a network node and a network comprising a plurality of network nodes. Background technique [0002] Local Area Networks (LANs) are typically arranged to provide network connectivity between nodes within a confined area. LANs generally enable connected nodes to transmit packets of data called frames. Typically, this frame includes an address identifying the receiving node or destination. Data transmission is mainly based on Ethernet or IEEE 802.3 protocol. To extend the range of such networks, layer 2 switches (bridges) are often used. In addition to Layer 1 functions (signal amplification, forwarding), bridges can also extract address information in order to filter traffic. [0003] The Institute of Electrical and Electronics Engineers (IEEE) has proposed a standard (IEEE 802.1Q) that defines the operation of a Layer 2 VLAN bridge that allows virtual LAN topologies to be de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/853H04L12/931H04L47/2416
CPCH04L49/351H04L47/2416H04L49/206H04L47/62H04L49/354
Inventor 马塞尔·基斯林
Owner SIEMENS AG