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An Ethernet passive optical network dynamic bandwidth distribution method based on bandwidth credit

A bandwidth allocation method and passive optical network technology, applied in the field of optical communication, can solve the problem that the ONU cannot guarantee the bandwidth, etc.

Inactive Publication Date: 2008-07-09
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0006] In order to solve the problem in the prior art that the ONU requests more than the bandwidth it actually purchased so that other ONUs cannot guarantee the bandwidth it purchases, the present invention provides a dynamic bandwidth allocation method for Ethernet passive optical networks based on bandwidth lending, thereby Realize the mutual lending of bandwidth to ensure that ONUs can get the purchased bandwidth fairly

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  • An Ethernet passive optical network dynamic bandwidth distribution method based on bandwidth credit
  • An Ethernet passive optical network dynamic bandwidth distribution method based on bandwidth credit
  • An Ethernet passive optical network dynamic bandwidth distribution method based on bandwidth credit

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Embodiment Construction

[0021] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the drawings and embodiments.

[0022] The invention provides an uplink dynamic bandwidth allocation method used in the Ethernet passive optical network, and a fair dynamic bandwidth allocation method based on bandwidth lending. According to the bandwidth allocation requests reported by each ONU, the OLT divides the ONUs into two types: light-loaded ONUs, where the actual requested bandwidth is less than or equal to the purchased bandwidth, and heavy-loaded ONUs, where the actual requested bandwidth is greater than the purchased bandwidth. In each polling cycle (Cycle Time), the OLT "loans" the excess bandwidth of the light-loaded ONU to the heavy-loaded ONU in the same cycle. The OLT records the loan situation of each ONU, and counts the historical loan amount of each ONU, that is, the difference between the loan bandwidth of the ONU minus the...

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Abstract

The invention provides an Ethernet passive optical network bandwidth distribution method based on bandwidth borrowing, comprising: OLT receives a bandwidth distribution request reported by the ONU and distributes the bandwidth according the load of the ONU. Therefore, by borrowing the bandwidth to the heavy load ONU through the light load ONU or by withdrawing the borrowed bandwidth through the heavy load ONU to satisfy the bandwidth authorization of every ONU that every ONU fairly receives the bandwidth authorization is realized.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a dynamic bandwidth allocation method of an Ethernet passive optical network based on bandwidth lending. Background technique [0002] Passive optical network technology has always been considered as the most promising technology in broadband optical access network. It breaks the traditional point-to-point optical fiber access solution and provides network users with an economical, future-oriented, Multi-service broadband access solution. As the development direction of broadband access network technology, PON has won the recognition of communication industry experts and operators. Since it was standardized and put into use in the 1980s, passive optical network technology has gone through several stages of development. The International Telecommunication Standardization Organization and equipment manufacturers have developed a variety of protocols and technologies in order t...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/28H04L47/76H04Q11/00
Inventor 刘海谭哲元刘德明何炜曾成黄晶
Owner HUAZHONG UNIV OF SCI & TECH
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