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Method for determining a time out delay in a network

A network, processing time technology, applied in the direction of bus network, network interconnection, data exchange network, etc.

Inactive Publication Date: 2004-01-21
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So, they have to use remote timeouts that take into account both wireless bridges and HL2 transfer times

Method used

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  • Method for determining a time out delay in a network
  • Method for determining a time out delay in a network

Examples

Experimental program
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Embodiment Construction

[0028] According to the present invention, the overtime operation of Hiperlan 2 bus bridge is carried out as follows:

[0029] Such as figure 1 As shown, the Hiperlan bus bridge usually has one entrance connected to the wired IEEE 1394 bus and another entrance connected to the wireless Hiperlan 2 network. In order to obtain compatibility with the P13943.1 bridge, the Hiperlan 2 bridge must be able to handle the timeout bridge management messages mentioned in the background art.

[0030] Note that the present invention can also be applied to other environments and is not limited to figure 1 . In particular, the link need not be a wireless link.

[0031] For this reason, each Hiperlan 2 compliant bus bridge is required to provide values ​​for the MAX_RQ_FORWARD_TIME and MAX_RESP_FORWARD_TIME parameters of the timeout message.

[0032] The MAX_RQ_FORWARD_TIME parameter represents the sum of the time limits for each bridge on the path from the request node to the destination n...

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Abstract

The invention concerns a method for determining a remote timeout parameter in a network comprising a link between a first bus and a third bus, wherein the link is implemented through a first and a second portal connected respectively to the first and the third bus, and wherein the link is modelized as a second bus connected to the first bus and the third bus through respective bridges; the method comprising the steps, at the level of the first bridge portal of, upon solicitation to provide its contribution to a timeout for a request subaction: determining whether a destination node of the request subaction is located on the link or not; in the affirmative, adding to the timeout contribution: the first bridge portal's maximum request subaction processing time and link's maximum transmission time;in the negative, adding, to the timeout contribution: the first bridge portal's maximum request subaction processing time and half of the link's maximum transmission time. The invention also concerns a method similar to the above for determining the timeout contribution of bridges for response subactions.

Description

technical field [0001] The invention relates to a method of determining a timeout delay in a communication network, in particular a network comprising a link connecting two IEEE 1394 buses. This link can eg be a wireless Hiperlan2 link. Background technique [0002] In many standards or draft standards, the response timeout problem is treated as follows: [0003] (a) Case in a wired IEEE 1394-1955 bus environment: [0004] A split transaction, characterized by a request subaction and a subsequent reply subaction using the same transaction tag (ie, the transaction's identifier). [0005] The value in the SPLIT_TIMEOUT control and status register specifies the maximum time period for the particular IEEE 1394 node in which responses to requests are generated and sent. If the specified time period (or twice the time period as specified in the IEEE 1394a standard) elapses without a response being transmitted, the entire transaction fails and the transaction tag can be reused (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L12/40H04L12/46H04L12/56H04L12/64
CPCH04L12/40097H04L12/40091H04L12/462H04W28/18
Inventor 迪特尔·豪普特吉勒·斯特劳布
Owner THOMSON LICENSING SA