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Device and method for switching data traffic in a digital transmission network

A digital transmission and network technology, applied in the direction of digital transmission system, data exchange network, transmission system, etc., can solve problems affecting the delay of data services, etc., to reduce the risk of entry buffer congestion, small delay, and reduce data loss Effect

Inactive Publication Date: 2015-04-01
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, buffering at the ingress affects the delay of the data traffic carried by the data packets
Also, in case multiple packet traffic flows should be switched from different ingress ports to the same egress port, the sum of the data rates of these packet traffic flows may exceed the data rate at which data can be read out at the output port of the unit switch

Method used

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  • Device and method for switching data traffic in a digital transmission network
  • Device and method for switching data traffic in a digital transmission network
  • Device and method for switching data traffic in a digital transmission network

Examples

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Embodiment Construction

[0034] figure 1 The proposed network element NE is shown. The network element comprises ingress ports IP1, IP2, IP3 capable of receiving data packets of the packet traffic flow. Each of the ingress ports IP1, IP2, IP3 is connected to a corresponding incoming line IL1, IL2, IL3 to other network elements. Each ingress port IP1, IP2, IP3 contains an ingress traffic manager iTM1, iTM2, iTM3 that maps received data packets into data units of fixed size. Each ingress traffic manager iTM1, iTM2, iTM3 is connected to a corresponding ingress fabric access iFA1, iFA2, iFA3 also contained in an ingress port IP1, IP2, IP3. Each inlet port IP1, IP2, IP3 is connected to a corresponding input interface IIA1, IIA2, IIA3 of the first switching matrix SA. In addition, each inlet port IP1, IP2, IP3 is connected to a corresponding input interface IIB1, IIB2, IIB3 of the second switching matrix SB. Accessing iFA1, iFA2, iFA3 via the ingress structure, the ingress ports IP1, IP2, IP3 forward da...

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Abstract

A network element for a digital transmission network is proposed. The network element contains two switching matrices for switching data cells, as well as ingress ports that receive TDM traffic flow and packet traffic flow and segment the traffic flows into cells. A control system for controlling the configuration of the ingress ports and the switching matrices controls the ingress ports, in case of no failure of the switching matrices, to forward the TDM traffic flows to both switching matrices and to split the packet traffic flow over the two switching matrices.

Description

technical field [0001] The invention relates to a device and method for switching data services in a digital transmission network. Background technique [0002] In a digital transmission network, the data of a traffic flow is transmitted from a source host (such as a computer or a communication device) to a destination host, which can be another single host in the case of unicast, multiple hosts forming a multicast group host or broadcast domain. A traffic flow is considered to be data transported on a specific transport connection or media stream. A traffic flow is the logical equivalent of a call from a source host to a destination host or a connection between a source host and a destination host. Each host is connected to at least one node of the digital transmission network via a physical connection. A digital transmission network consists of different nodes, where a physical connection between two nodes is called a link. A single node may be connected to multiple ot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/851H04L12/951H04L49/111H04L47/43
CPCH04L49/606H04L49/3072H04L49/1523H04L49/30H04L12/00H04L49/90
Inventor R·格梅利L·龙彻蒂A·帕帕雷拉V·塞斯蒂托
Owner ALCATEL LUCENT SAS
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