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Method for simulating encapsulation and de-encapsulation from edge to edge pseudo-wire of EI service and device

A technology of pseudowire simulation and packaging method, which is applied in the direction of electrical components, transmission systems, etc., and can solve problems such as bit errors

Active Publication Date: 2009-12-23
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a pseudowire simulation encapsulation and decapsulation method for E1 service PWE3 messages, so as to solve the problem of bit errors in the process of PTN equipment reconfiguration cascading number in the prior art

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  • Method for simulating encapsulation and de-encapsulation from edge to edge pseudo-wire of EI service and device
  • Method for simulating encapsulation and de-encapsulation from edge to edge pseudo-wire of EI service and device
  • Method for simulating encapsulation and de-encapsulation from edge to edge pseudo-wire of EI service and device

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Embodiment Construction

[0038] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the drawings and embodiments.

[0039] Such as figure 1 Shown is a block diagram of a PTN device with an E1PWE3 encapsulation device and a decapsulation device of the present invention. Such as figure 1 Among them, the PTN equipment configured with the encapsulation and decapsulation device of the present invention generally includes an E1 data frame generator (E1Framer), an E1 business emulation processing module and an E1PWE3 encapsulation device and decapsulation device, a tunnel encapsulation / decapsulation device and a data link layer and physical layer processing modules. Among them, the E1PWE3 encapsulation device 1 and the decapsulation device 2 are provided by the present invention, through these two modules, when the number of cascades is changed, no bit error will occur. Other modules are all existing technologies, and will not be ...

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Abstract

The invention discloses a method for simulating encapsulation from edge to edge pseudo-wire of an EI service, comprising the following steps of: placing effective payloads of EI data frames into a caching array; determining that the lengths of the effective payloads achieve the product of the cascading number of a preset cascading configuration and a byte number to be transmitted by each EI data frame; and adding control words and pseudo-wire heads to the cascaded effective payloads. The invention also discloses a method for simulating de-encapsulation from edge to edge pseudo-wire of the EI service, comprising the following steps of: determining that a pseudo-wire head from edge to an edge pseudo-wire simulation message of the EI service is correct; cutting the effective payloads into pieces; and determining no existence of fragment finally and recovering cut data into the EI data frames. The invention also discloses a device for simulating encapsulation from edge to edge pseudo-wire of the EI service and a device for the simulating de-encapsulation from edge to edge pseudo-wire of the EI service. Therefore, the invention changes the cascading number of an EI PWE3 message of PTN equipment without error codes.

Description

technical field [0001] The present invention relates to the field of packet transport network (Packet Transport Network, PTN), in particular to a method for encapsulating and decapsulating E1 edge-to-edge pseudowire emulation (Pseudo Wire EmulationEdge-to-Edge, PWE3) messages on PTN equipment and Corresponding encapsulation and decapsulation devices. Background technique [0002] In recent years, the IP network has achieved rapid development with its own advantages, and the network scale has continued to expand. In the process of upgrading and expanding applications, the traditional communication network should establish duplicate networks or make full use of existing or public resources. In view of this situation, PWE3 technology came into being. PWE3 can be adapted to many application environments, and the edge-to-edge pseudowire emulation of E1 services is one of them. [0003] There are two types of PWE3 encapsulation for E1 services, one is structure-aware and the ot...

Claims

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Application Information

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IPC IPC(8): H04L29/06
Inventor 崔春来黄俊强
Owner ZTE CORP
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