Realizing method for supporting OAM function under multi-PHY connection

A technology for implementing methods and functions, applied in the field of asynchronous transmission mode, can solve problems such as increasing software overhead, real-time service transmission delay and delay jitter, affecting efficiency, etc., to save processing time, stable and reliable OAM function, and improve work efficiency Effect

Active Publication Date: 2008-03-12
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0040] Waiting in the driver's high-priority delay processing program (DPR) will affect the processing of real-time services, resulting in transmission delay and delay jitter of real-time services, resulting in a large error in the estimated waiting time
If you adjust the driver software architecture and create a low-priority task to realize the dynamic switching of the reserved channel, it will definitely increase the software overhead
[0041] 2) It is impossible to accurately set the waiting time required for dynamic switching
However, it is difficult to set the Tick value exactly as an approximate number of the required waiting time; if a timer is used, the accuracy of the timer is not necessarily an approximate number of the required waiting time
Therefore, at present, it is difficult to accurately set the waiting time required for dynamic switching, which may cause untimely switching and make switching meaningless
[0043] 3) Frequent switching affects efficiency
[0045] (53×8 / 50kbps)×9=76.36ms, it takes so much time to complete the switch, which seriously affects the efficiency of link detection

Method used

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  • Realizing method for supporting OAM function under multi-PHY connection
  • Realizing method for supporting OAM function under multi-PHY connection
  • Realizing method for supporting OAM function under multi-PHY connection

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Embodiment Construction

[0068] The core idea of ​​the present invention is: utilize the processor that supports AAL0 agreement and can simultaneously create the characteristic of multiple AAL0 channels, as: PowerPC processor, the present invention is set to work in duplex by creating reserved channel and AAL0 channel Mode, and the AAL0 channel is set to work in the simplex mode, so that the reserved channel can receive the OAM cells input into the ATM equipment through each PHY, and output the OAM cells through one of the specified PHYs, and the created AAL0 channels are respectively connected with The AAL0 channel corresponds to the designated PHY to output the OAM cell, so that each PHY realizes the OAM function on the link through its own independent output channel.

[0069] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodime...

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Abstract

A method for supporting OAM function under PHY connection includes using power PC processor to set up reserving channel being set to be worked under duplex mode and AALO channel being set to be worked under single mode, using reserving channel to input OAM cell of ATM device through each PHY and assigning one of PHY to output OAM cell, using AALO channel to output OAM cell through corresponding PHY assigned by AALO channel so as to make each PHY realize OAM function on link through each own independent channel.

Description

technical field [0001] The present invention relates to asynchronous transfer mode (ATM) technology, refer to a kind of ATM equipment that uses the processor of ATM Adaptation Layer Type 0 (AAL0) protocol in particular to virtual channel / virtual link ( VP / VC)-level link operation and maintenance (OAM) implementation method. Background technique [0002] ATM is a transmission mode in which information is organized into cells. Current ATM equipment generally follows the ITU-T I.610 protocol formulated by the International Telecommunication Union (ITU-T), and supports the VP / VC-level link fault detection function, that is, the operation and maintenance of VP / VC-level links. The ITU-T I.610 protocol defines the OAM used to realize the OAM flow (F4) at the virtual channel level / the OAM flow (F5) cell at the virtual link level, and the F4 / F5 cells correspond to the VP / VC level respectively Link operation and maintenance. Hereinafter, a VP / VC level link is referred to as a link ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L29/08
Inventor 陈剑
Owner DATANG MOBILE COMM EQUIP CO LTD
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