Software replacement in a stream processing system

A stream processing system and software technology, applied in the direction of transmission system, digital transmission system, software engineering design, etc., can solve problems such as system abnormal operation and system crash

Inactive Publication Date: 2008-02-20
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] A software replacement process with interface and data context changes cannot use this approach, because this mechanism cannot prevent the current and updated software from running simultaneously in different modules (this will cause the system to malfunction, and even cause the system to crash)

Method used

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  • Software replacement in a stream processing system
  • Software replacement in a stream processing system
  • Software replacement in a stream processing system

Examples

Experimental program
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Embodiment Construction

[0036] Running a media gateway component is a special case. The media gateway component must be upgraded in a 1+1 device protection mode, as described in European Patent Application No. 06300844.5A. Before the software replacement process starts, the N+1 configuration must be (temporarily) reconfigured to a 1+1 configuration.

[0037] Figure 1 shows the media gateway configuration or general streaming system MG. The stream processing system includes subsystem I, each of which has an external interface for receiving and transmitting streams. The subsystem needs to run the operating software SW to operate.

[0038] The software replacement process shown in Figure 2 can be divided into the following steps: First, create two independent instances of the current software version CR, one running on the first component I1 and the other on the redundant component I2. As a prerequisite for this step, the system must operate under the 1+1 equipment protection scheme. Preferably, any system ...

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Abstract

The invention concerns a method for replacing software of a stream processing system like a media gateway with redundancy comprising the steps of loading an upgrade (UG) of the software, or a part of the software, while the current release (CR) is running and integrating and activating the upgrade, such that the running upgrade takes over the functionality, where a redundancy sub-system for an operational sub not system (I I ), which should be upgraded, is reconfigured to an independent sub-system (12) and the upgrade (UG) is loaded on the independent system, while the operational sub-system (I I ) remains operable with the current release (CR). Then operational context information is synchronized between the operable sub-system (I I ) and the independent sub-system (12) in order to synchronize the two running sub-systems, and after the synchronization, the running independent system (12) takes over hitless (with stable bearer preservation) the functionality of the operational sub-system and becomes an operational sub-system running the upgrade (UG). Finally, the upgrade is loaded on the original operating sub-system (I I ) that is reconfigured as a redundancy sub-system. The invention also concerns a respective stream processing system and a computer software product.

Description

Technical field [0001] The invention relates to a method for replacing software of a stream processing system, a stream processing system and a computer software product. Background technique [0002] The media gateway is used as a carrier-grade network unit in the next generation network (NGN). A typical gateway structure, especially for high-capacity applications, is built on different hardware modules such as circuit interface modules, switch structure modules, etc., and the hardware modules are also used for the purpose of system scalability. [0003] Carrier grade means a specific requirement for system availability, which can be mapped to a very small system interruption time figure. Therefore, operation and maintenance activities (such as the software replacement process) should not increase the system interruption time, and in addition should be executable without affecting the currently established business running on the system. [0004] The software replacement process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445H04L12/24
CPCG06F11/1433G06F8/67G06F8/656
Inventor C·魏茨曼A·温克勒
Owner ALCATEL LUCENT SAS
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