CN112261513A

CN112261513A - ONU high-throughput report mode

Info

Publication number: CN112261513A
Application number: CN202010988124.0A
Authority: CN
Inventors: 王晓明
Original assignee: Xinhe Semiconductor Technology Wuxi Co Ltd
Current assignee: Xinhe Semiconductor Technology Wuxi Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-01-22

Abstract

The invention discloses a report mode of ONU high throughput, which comprises the following steps: the ONU extracts the information of a flag field in the gate message; when the report value currently calculated by the ONU is greater than or equal to the configured report sending threshold value; the ONU sends a report message according to the currently calculated report value; when the value is smaller than the configured report sending threshold value, whether a flag field in the gate information forcibly sends a report needs to be judged; when the transmission is not forced, it is also necessary to determine whether the report transmission timer of the ONU reaches timeout time. In the invention, when the buffer capacity of the ONU is stronger, whether the bandwidth needs to be reported or not is determined by the threshold value, so that the phenomenon that the OLT frequently issues small bandwidth to the ONU to cause the waste of tail bandwidth and further cause the reduction of the whole throughput of the system can be avoided.

Description

ONU high-throughput report mode

Technical Field

The invention belongs to the technical field of report of ONU, in particular to a report mode of ONU with high throughput.

Background

With the development of passive optical network (passive optical network) technology, users have more and more demands on the network, the number of users is more and more, meanwhile, the requirements of the users on bandwidth are more and more, and the requirements on time delay are lower and more, so the requirements on dynamic bandwidth allocation of an optical line terminal (optical line terminal) are more and more strict, and for the optical line terminal, the reported value of the bandwidth is an important index for the dynamic bandwidth allocation of the OLT.

In a passive optical network (passive optical network), an optical line terminal (optical line terminal) is connected to a plurality of optical network units (optical network units) through a passive splitter (passive splitter).

As shown in fig. 1, a passive optical network system is formed, for an epon (ethernet passive optical network) system, a downlink adopts a broadcast mode, an uplink adopts a burst time division mode to transmit data, in the uplink direction, an OLT realizes bandwidth control on each ONU through dynamic bandwidth allocation (dynamic bandwidth allocation), the OLT calculates a bandwidth to be issued to each ONU according to a bandwidth value in a report message reported by each ONU and a configured bandwidth template, and finally issues a gate message to the ONU to tell the bandwidth obtained by the ONU. Because the standard of the EPON only supports whole packet transmission, when the ONU uploads data, the current packet is transmitted if the current remaining bandwidth is greater than or equal to the current packet length, and the current packet is not transmitted if the current remaining bandwidth is smaller than the current packet length until the current packet is transmitted next time when the OLT acquires the authorized bandwidth and the acquired authorized bandwidth is greater than the current packet length, which causes waste of the tail bandwidth and thus causes a decrease in the overall throughput.

Disclosure of Invention

The invention provides an ONU high throughput report mode, which can reduce the bandwidth waste to a certain extent, thereby improving the throughput of the whole system.

The method comprises the steps that an ONU reports a report message to an OLT periodically, the OLT issues a gate message to the ONU periodically, when the OLT receives the report message reported by the ONU, the message contains data to be sent currently buffered by the ONU, the OLT calculates the bandwidth issued to each ONU according to the bandwidth value in the report reported by the ONU and a configured bandwidth template, and then the gate message is issued to complete the bandwidth interaction process.

A report mode of ONU high throughput comprises the following steps:

step A: the ONU receives the gate message of the OLT, extracts the information of the flag domain in the gate message and enters the step B;

and B: whether the current calculated report value of the ONU is greater than or equal to a configured report sending threshold value or not is judged, if so, the step C is carried out, and if not, the step D is carried out;

and C: the ONU sends a report message according to the currently calculated report value, and the step A is entered;

step D: whether a flag field in the gate information forcibly sends a report is judged, if the flag field in the gate information forcibly sends the report, the step E is carried out, and if the flag field in the gate information does not forcibly send the report, the step F is carried out;

step E: the ONU sends a report message according to the minimum bandwidth value and enters the step A;

step F: if the report sending timer of the ONU reaches the timeout time, entering the step E, if the report sending timer of the ONU does not reach the timeout sending time, entering the step G;

step G: and the ONU does not send a report message at present and enters the step A.

The invention has the beneficial effects that: according to the proposed report reporting scheme of the ONU, the ONU can configure a threshold value of the reported bandwidth according to the self caching capacity, when the self caching capacity of the ONU is stronger, whether the bandwidth needs to be reported or not is determined through the threshold value, the phenomenon that the OLT frequently issues small bandwidth to the ONU to cause waste of tail bandwidth can be avoided, and therefore the whole throughput of the system is reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is an EPON system architecture diagram.

Fig. 2 is a report reporting flow diagram of an ONU according to the present invention.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 2, a report method for high throughput of an ONU includes the following steps:

step A: the ONU receives a gate message of the OLT and extracts the information of a flag domain in the gate message;

and B: whether the report value currently calculated by the ONU is larger than or equal to the configured report sending threshold value or not;

step C, if the report sending threshold is larger than or equal to the configured report sending threshold, the ONU sends a report message according to the currently calculated report value and then enters the next report reporting;

step D: if the value is less than the configured report sending threshold value, whether a flag field in the gate information forcibly sends a report needs to be judged;

step E: the ONU sends a report message according to the minimum bandwidth value and then enters the next report to report when forcibly sending the report;

step F: the method comprises the steps that a report is not forcibly sent, whether a report sending timer of an ONU reaches timeout time or not needs to be judged, the timeout time is reached, the ONU sends a report message according to the minimum bandwidth value, and then the next report is entered for reporting;

step G: and if the timeout sending time is not reached, the ONU does not send a report message currently, and then enters the next report to report.

In the method, the ONU can configure the threshold of the reported bandwidth according to the buffer capacity of the ONU, when the buffer capacity of the ONU is stronger, whether the bandwidth needs to be reported is determined through the threshold, the phenomenon that the OLT frequently issues small bandwidth to the ONU to cause the waste of tail bandwidth so as to reduce the whole throughput of the system can be avoided, and meanwhile, by configuring different reported bandwidth thresholds, the time delay of the system can be flexibly adjusted to meet different bandwidth scenes.

The above are merely embodiments of the present invention, which are described in detail and with particularity, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are within the scope of the present invention.

Claims

1. A report mode of ONU high throughput is characterized by comprising the following steps:

step F: if the report sending timer of the ONU reaches the timeout time, the sending timeout time is reached, the step E is carried out, and if the report sending timer does not reach the timeout sending time, the step G is carried out;

2. The method as claimed in claim 1, wherein the gate message is issued after the OLT calculates the bandwidth to be issued to each ONU according to the bandwidth value in the report reported by the ONU and the configured bandwidth template.