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Method and device for bandwidth dynamic allocation in optical access network

A technology of dynamic allocation and optical access network, which is applied in the direction of selection device, selection device, data exchange network, etc. of multiplexing system, which can solve the problems of limitation and poor real-time performance, and achieve improved bandwidth utilization and user experience , the effect of saving operating costs

Active Publication Date: 2014-02-05
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the existing TDM-PON dynamic bandwidth allocation mechanism, such as poor real-time performance and being limited to a single OLT, and propose a centralized flexible bandwidth dynamic system oriented to the overall situation of the optical access network. Dispensing method and apparatus

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  • Method and device for bandwidth dynamic allocation in optical access network
  • Method and device for bandwidth dynamic allocation in optical access network
  • Method and device for bandwidth dynamic allocation in optical access network

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Embodiment Construction

[0025] figure 1 It is a traditional optical access network network management architecture, including OLT, multiple ONUs connected to each OLT, metropolitan area network aggregation layer equipment (SR and BRAS) connected to the OLT, and network management system. The traditional centralized network management has a single function and can only realize one-way information flow, that is, collect basic information such as network topology, and does not have the function of dynamically configuring network status. Moreover, the traditional network management architecture is distributed, and the metropolitan area network and the access network are independent. This leads to the limitations of traditional network management, which cannot dynamically allocate network resources globally for the entire access network.

[0026] figure 2 It is a device for dynamically allocating bandwidth in the optical access network, including the control layer and managed equipment. The managed equi...

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Abstract

The invention relates to a method and device for bandwidth dynamic allocation in an optical access network, and provides a global centralized type flexible bandwidth dynamic allocation method and device orienting the optical access network. The method and device overcome the defects that an existing TDM-PON dynamic bandwidth allocation mechanism is poor in real-time performance and can only be limited in a single OLT. The device is formed by a control layer and a managed device, wherein the control layer comprises a communication agent module, a bandwidth resource analysis module and a tactical decision module. The method for the bandwidth dynamic allocation mechanism includes the steps of monitoring network flow circularly, and carrying out the bandwidth dynamic allocation mechanism if network busy hotspots exist. The bandwidth dynamic allocation mechanism comprises a bandwidth dynamic optimization mechanism and a bandwidth dynamic recovery mechanism. Compared with the prior art, the method and device have the advantages that a whole network combined dynamic bandwidth dispatching technological measure is adopted to carry out circular detection, and the method and device enable bandwidth resource management of the optical access network to be intelligentized, greatly improve bandwidth utilization rate, save operational cost of the optical access network and improve user experience of the optical access network.

Description

technical field [0001] The invention relates to a method and device for dynamic bandwidth allocation in an optical access network, in particular to a centralized flexible bandwidth dynamic allocation method and device for combining multiple optical line terminals in a passive optical network with time division multiplexing. Background technique [0002] With the continuous advancement of "triple play" and the rapid development of FTTx, the flexible allocation of ultra-large bandwidth is an inevitable trend in the development of optical access networks. At the same time, higher requirements are put forward for the intelligent management of optical access networks. How to improve resource utilization through intelligent control of the access network is of great significance to the full popularization of optical access networks. [0003] The optical access network is a multi-point-to-point topology in the upstream direction. In the time-division multiplexing passive optical net...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/911H04Q11/00
Inventor 张杰赵永利吴家林杨辉
Owner BEIJING UNIV OF POSTS & TELECOMM
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