WO2014139172A1

WO2014139172A1 - Dynamic bandwidth allocation method, device, and system

Info

Publication number: WO2014139172A1
Application number: PCT/CN2013/072754
Authority: WO
Inventors: 孙方林; 张利
Original assignee: 华为技术有限公司
Priority date: 2013-03-15
Filing date: 2013-03-15
Publication date: 2014-09-18
Also published as: CN103534981A; CN103534981B

Abstract

The present invention relates to the technical field of communications, and provides a dynamic bandwidth allocation method, device, and system, to solve a problem that due to the presence of unpredictable processing delay and transmission delay between a CNU and an MC, a GATE message corresponding to the CNU has deviation or jitter in an authorization window of a coaxial domain and an authorization window in an optical domain, and therefore system performance is reduced. Specific steps comprise: a media converter receiving a CNU data message sent by a CNU, wherein the CNU data message comprises a CNU sending authorization request, and the CNU sending authorization request is used for requesting a bandwidth resource of the CNU; and sending a CNU data message to an OLT according to sending authorization of the media converter, so that the OLT performs bandwidth resource allocation on the CNU according to the CNU sending authorization request, wherein the sending authorization of the media converter comprises: a bandwidth resource allocated by the OLT to the media converter. The present invention is applicable in dynamic bandwidth allocation.

Description

Method, device and system for dynamic bandwidth allocation

The present invention relates to the field of communications technologies, and in particular, to a method, apparatus, and system for dynamic bandwidth allocation.

Background technique

In the EPOC (Ethernet Passive Optical Network Protocol Over Coax) system, the OLT (Optical Line Terminal) manages the CNU (Coaxial Network Unit), 0LT The CNU needs to be scheduled, that is, resource allocation. After resource allocation, 0LT and CNU perform data transmission.

0LT methods for scheduling CNU include:

After receiving the REPORT message sent by the CNU, the 0LT allocates resources to the CNU according to the REPORT message and notifies the CNU through the GATE message (gating message), so that the CNU uses the allocated resource to transmit data with the 0LT. Specifically, the 0LT sends a GATE message to the CNU through the MC (Media Converter), and the OLT also receives the REPORT message sent by the CNU through the MC. The REPORT message is a sending authorization request, and the GATE message is a sending authorization.

If the GATE message is sent to the CNU, the Grant (authorization start time, authorization time length, ie authorization window) in the GATE message will take effect in the optical domain of the MC uplink. Due to the unpredictable processing delay and transmission delay between the CNU and the MC, the GNU message corresponding to the CNU is deviated or jittered in the authorization window of the coaxial domain and the authorization window of the optical domain, and the optical domain and the coaxial domain are The two time domains are very difficult to synchronize. In addition, there is an indeterminate difference in the line rates of the coaxial domain and the optical domain, so that the line rate resources of the optical domain are wasted, thereby reducing the performance of the system.

Summary of the invention

Embodiments of the present invention provide a method, an apparatus, and a system for dynamic bandwidth allocation, which solve the problem that the CNU corresponding GATE message is authorized in the coaxial domain due to unpredictable processing delay and transmission delay between the CNU and the MC. There is a deviation or jitter between the window and the authorization window of the optical domain, which reduces the performance of the system.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In a first aspect, a method for dynamic bandwidth allocation is provided, including:

The media converter receives the CNU data message sent by the CNU, where the CNU data message includes a CNU send authorization request, and the CNU send authorization request is used to request the bandwidth resource of the CNU;

Sending, according to the sending authorization of the media converter, the CNU data message to the OLT, so that the OLT allocates a bandwidth resource to the CNU according to the sending authorization request of the CNU, where the sending authorization of the media converter includes: The bandwidth resource allocated by the OLT to the media converter.

In a first possible implementation manner of the first aspect, before the sending the CNU data message to the OLT according to the sending authorization of the media converter, the method further includes:

Determining whether the format of the CNU data message is allowed to be transmitted in the optical domain; if not allowed, performing format conversion on the CNU data message, so that the converted format CNU data message can be sent to the OLT. With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation, before the sending the CNU data message to the OLT according to the sending authorization of the media converter, the method Also includes:

Transmitting, to the OLT, a transmission authorization request of a media converter, the transmission authorization request of the media converter is used to request a bandwidth resource of the media converter, so that the OLT sends the authorization request according to the media converter as the medium The converter allocates bandwidth resources.

Receiving a transmission grant of the media converter sent by the 0LT.

With reference to the first aspect or the first possible implementation or the second possible implementation of the first aspect, in a third possible implementation, the sending is performed to the OLT according to the sending authorization of the media converter After the CNU data message, the method further includes:

Receiving a transmission grant of the CNU sent by the 0LT, where the sending authorization of the CNU includes: the bandwidth resource allocated by the 0LT to the CNU.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, after the receiving the sending authorization of the CNU sent by the OLT, the method further includes: determining, by the CNU, the sending authorization Whether the format is allowed to be transmitted in the coaxial domain; if not allowed, the transmission authorization of the CNU is format converted, so that the transmission authorization of the converted format CNU can be sent to the CNU;

Sending a transmission authorization of the CNU after the conversion format to the CNU.

With reference to the fourth possible implementation manner of the foregoing aspect, in a fifth possible implementation manner, the CNU data message includes: a logical link label LL ID of a CNU requesting a bandwidth resource; Authorization requests are used to request bandwidth for different LL IDs Source; or,

The mediator's transmit grant request is used to request a bandwidth resource according to the total bandwidth resource required, the total bandwidth resource including: a sum of all LL I D requested bandwidth resources, and a bandwidth resource requested by the media converter itself.

In a second aspect, another method of dynamic bandwidth allocation is provided, including:

The OLT receives a CNU data message sent by the media converter, and the CNU data message is sent by the media converter to the OLT according to a transmission authority of the media converter, where the CNU data message includes: a CNU sending an authorization request, The CNU sends an authorization request for requesting a bandwidth resource of the CNU, and the sending authorization of the media converter includes: the bandwidth resource allocated by the OLT to the media converter;

And performing bandwidth resource allocation for the CNU according to the sending authorization request of the CNU; sending a transmission authorization of the CNU to the media converter, so that the media converter sends a sending authorization of the CNU to the CNU, the CNU The transmission grant includes the bandwidth resource allocated by the OLT for the CNU.

In a first possible implementation manner of the second aspect, before the sending the CNU transmission authorization to the media converter, the method further includes:

Receiving, by the media converter, a transmission authorization request sent by the media converter, where the media converter sends an authorization request for requesting a bandwidth resource of the media converter;

And performing bandwidth resource allocation on the media converter according to a sending authorization request of the media converter;

Transmitting authorization of the media converter is sent to the media converter. With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the CNU data message further includes: service and management data, and the CNU data message is available through the LUD (also The link identifier is identified by a CNU, and at least one LL ID can be assigned to a CNU.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the CNU data message includes: a logical link label LL ID of a CNU requesting a bandwidth resource; The transmission authorization request of the device to allocate bandwidth resources to the media converter includes:

Request bandwidth resources according to broadband resources required by different LL IDs; or

The bandwidth resource is requested according to the required total bandwidth resource, where the total bandwidth resource includes: a sum of bandwidth resources requested by all LL I Ds, and a bandwidth resource requested by the media converter itself.

In a third aspect, an apparatus for dynamically bandwidth allocation is provided, including:

a first receiving unit, configured to receive a CNU data message sent by the CNU, where the CNU data message includes a sending authorization request of the CNU, where the sending authorization request of the CNU is used to request a bandwidth resource of the CNU;

a first sending unit, configured to send the CNU data message to the OLT according to the sending authorization of the media converter, so that the OLT allocates a bandwidth resource to the CNU according to the sending authorization request of the CNU, where the media converter Transmitting the authorization includes: the 0LT is a bandwidth resource allocated by the media converter.

In a fourth aspect, an apparatus for providing another dynamic bandwidth allocation includes:

a first receiving unit, configured to receive a CNU data message sent by the media converter, where the CNU The data message is sent by the media converter to the OLT according to a transmission authority of the media converter, where the CNU data message includes: a CNU sending an authorization request, where the CNU sends an authorization request for requesting a bandwidth resource of the CNU, The sending authorization of the media converter includes: the bandwidth resource allocated by the 0LT to the media converter;

An allocating unit, configured to perform bandwidth resource allocation for the CNU according to the sending authorization request of the CNU;

a first sending unit, configured to send a sending authorization of the CNU to the media converter, so that the media converter sends a sending authorization of the CNU to the CNU, where the sending authorization of the CNU includes the Bandwidth resources allocated by the CNU.

In a fifth aspect, a media converter is provided, including:

a receiver, configured to receive a CNU data message sent by the CNU, where the CNU data message includes a sending authorization request of the CNU, where the sending authorization request of the CNU is used to request a bandwidth resource of the CNU;

a transmitter, configured to send the CNU data message to the OLT according to a sending authorization of the media converter, so that the OLT allocates a bandwidth resource to the CNU according to a sending authorization request of the CNU, where the media converter Transmitting the authorization includes: the 0LT is a bandwidth resource allocated by the media converter.

In a sixth aspect, an 0LT is provided, including:

a receiver, configured to receive a CNU data message sent by the media converter, where the CNU data message is sent by the media converter to the OLT according to a sending permission of the media converter, where the CNU data message includes: Request, the CNU sends an authorization request for the request The bandwidth resource of the CNU, the sending authorization of the media converter includes: the bandwidth resource allocated by the 0LT to the media converter;

a processor, configured to perform bandwidth resource allocation for the CNU according to the sending authorization request of the CNU;

a transmitter, configured to send a transmission authorization of the CNU to the media converter, so that the media converter sends a sending authorization of the CNU to the CNU, where the sending authorization of the CNU includes the 0LT being allocated to the CNU Bandwidth resources.

In a seventh aspect, a system for dynamic bandwidth allocation is provided, including:

The apparatus for dynamic bandwidth allocation provided by the third aspect and the fourth aspect.

In an eighth aspect, a system for dynamic bandwidth allocation is provided, including:

The media converter provided by the fifth aspect and the 0LT provided by the sixth aspect.

The method, device, and system for dynamic bandwidth allocation provided by the embodiments of the present invention, after using the foregoing solution, the media converter receives a C data message sent by the CNU, where the CNU data message includes a CNU sending authorization request, and the CNU Sending an authorization request for requesting a bandwidth resource of the CNU; and transmitting the CNU data message to the OLT according to a sending authorization of the media converter, where the CNU data message includes a sending authorization request; Requesting a buffering condition for requesting a bandwidth resource or a data to be sent by the media converter; the OLT allocates a bandwidth resource to the CNU according to a sending authorization request of the CNU, where the sending authorization of the media converter includes : The 0LT is a bandwidth resource allocated by the media converter. The media converter uses the 0LT to send a CNU data message to the OLT for its allocated bandwidth resource instead of sending a CNU data message to the OLT using the bandwidth resources allocated for the CNU in the prior art. In this way, the media converter only transmits the uplink data under the transmission authorization of the media converter, thereby avoiding the problem that the system performance is degraded due to the deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural diagram of an EP0N network system;

2 is a schematic structural diagram of another EPOC network system;

3 is a schematic structural diagram of bandwidth allocation in a coaxial domain;

Figure 4 is a schematic structural diagram of a GATE message;

Figure 5 is a schematic structural diagram of a REPORT message;

FIG. 6 is a flowchart of a method for dynamically bandwidth allocation by using a media converter as an execution body according to the embodiment;

Figure 7 is a system structure diagram applied to the method shown in Figure 6;

FIG. 8 is a flowchart of another method for dynamically bandwidth allocation by using a media converter as an execution body according to the embodiment; FIG.

FIG. 9 is a flowchart of a method for dynamically bandwidth allocation by using OLT as an execution subject according to an embodiment of the present invention; FIG. 10 is a flowchart of another method for dynamically bandwidth allocation by using OLT as an execution subject according to an embodiment of the present disclosure;

11 is a schematic structural diagram of a device for dynamic bandwidth allocation provided by this embodiment;

12 is a schematic structural diagram of another apparatus for dynamic bandwidth allocation provided by this embodiment;

13 is a schematic structural diagram of another apparatus for dynamic bandwidth allocation provided by the embodiment;

14 is a schematic structural diagram of another apparatus for dynamic bandwidth allocation provided by the embodiment;

15 is a schematic structural diagram of a media converter provided by this embodiment;

16 is a schematic structural diagram of another media converter provided by this embodiment;

17 is a schematic structural diagram of an 0LT provided by the embodiment;

18 is a schematic structural diagram of a system for dynamic bandwidth allocation provided by this embodiment;

19 is a schematic structural diagram of another system for dynamic bandwidth allocation provided by this embodiment. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to understand the following embodiments in a clearer way, the EPOC network system results and working principle are briefly introduced.

As shown in Figure 1, in the Ethernet Passive Optical Network (EP0N) network system, OLT (Optical Line Terminal) The transmission direction to the ONU (Optical Network Unit) is the downlink direction. The time-division multiplexing (TDM) mode is adopted, that is, the downlink data transmission is continuous, and the 0LT continuously broadcasts the information to Each 0NU, each 0NU chooses its own data reception.

The transmission from 0NU to 0LT is in the uplink direction, and the TDMA mode is used. That is, the uplink data transmission is bursty. Different 0NUs occupy different uplink time slots, and multiple 0NUs share the uplink through time division multiplexing. There is a guard interval to avoid collisions between each upstream time slot.

In order to ensure that the uplink data does not conflict, the uplink transmission needs to use the ranging technology to measure the loop delay of the 0LT downlink data signal sent to the uplink, and delay compensation according to this, to ensure that the uplink signal in each 0NU is After the common optical fibers are merged, the specified time slots are inserted, and no collision occurs with each other, and the gap is not too large, even if the time sent by different 0NUs reaches 0LT is different.

As shown in FIG. 2, it is a system structure diagram of an EPOC, where the MC can be, but is not limited to, a format for converting data transmitted from an optical domain into a format suitable for transmission in a coaxial domain, and can also be used for The format of the data transmitted from the coaxial domain is converted into a format suitable for transmission in the optical domain.

Before 0LT communicates with MC and CNU, 0LT first needs to allocate bandwidth for MC and CNU.

Specifically, the 0LT performs bandwidth allocation for the CNU, including: The CNU sends a REPORT message to the OLT through the MC (in this case, the MC can be used to convert the format of the coaxial data request message into a format suitable for transmission in the optical domain), REPORT message Including the bandwidth resource of the CNU requesting or the buffering of the data to be sent; 0LT allocates bandwidth for the CNU according to the received REPORT message, and Sending a GATE message containing the allocated bandwidth resource to the CNU through the MC (in this case, the MC can convert the format of the GATE message into a format suitable for transmission in the coaxial domain;); the CNU receives the GATE message in the coaxial domain. The medium sends the corresponding data to the MC, and then the MC forwards the data to the OLT, where the corresponding data includes the service data of the CNU and the REPORT message. The subsequent steps are similar to the previous ones and will not be described here.

0LT for the MC to divide the bandwidth includes: The MC sends a REPORT message to the 0LT, and the REPORT message includes the bandwidth resource of the MC request or the buffering of the data to be sent; 0LT allocates the bandwidth for the MC according to the received REPORT message, and sends the bandwidth to the MC. Sending a GATE message containing the allocated bandwidth resource, where the GATE message further includes, but is not limited to, a start time (ie, an authorization start time) at which the MC sends data to the OLT, and a time period during which data is allowed to be transmitted (ie, authorization) The MC) sends corresponding data to the OLT in the optical domain according to the received GATE message, the corresponding data including service data from the CNU, a REPORT message from the CNU, and a REPORT message of the MC. The subsequent steps are similar to the previous ones and will not be described here.

It is worth noting that in the coaxial domain, the 0FMDA (Orthogonal Frequency Division Multiple Address) modulation scheme is used as an example. The 0LT needs to perform time and frequency based two-dimensional bandwidth allocation on the CNU. As shown in FIG. 3, a time-frequency block (RB, Resource Block) composed of N symbols and M frequency resource dimension structures is a minimum scheduling resource, and a bandwidth resource allocated for each CNU time-frequency block can pass MAP (Media). The Access Plan message informs the CNU that the MC converts the received GATE message into a MAP message and sends it to the CNU. In other words, the MC may be to convert a GATE message containing a time-based one-dimensional bandwidth resource into a MAP message containing a time and frequency based two-dimensional bandwidth resource. As shown in FIG. 4, it is a schematic diagram of a GATE message format of an Ethernet passive optical network. Among them, Grant#n Length can indicate the weighted length of the target 4 (authorized window), Grant#n Start time can represent 4 authorized start time, n=l, 2, 3, 4, in other words, 0LT can be MC at the same time. Or CNU allocates at least one 4 authorized window.

As shown in Figure 5, it is a schematic diagram of the REPORT message format. The Number of queue sets may indicate the number of queued queues at the time of generating the REPORT message, and the Queue#n Report may indicate the length of the queued n at the time of generating the REPORT message, n=l, 2, 3, 4, 5, 6, 7 .

In the existing EPOC system, if the GATE message is directly sent to the CNU, because of the unpredictable processing delay and transmission delay between the CNU and the MC, the GNU message corresponding to the CNU is in the authorization window and the optical domain of the coaxial domain. There are deviations or jitters in the authorization window. The two time domains of the optical domain and the coaxial domain are very difficult to synchronize. In addition, there are uncertain differences in the linear rate between the coaxial domain and the optical domain, so that the linear rate resources of the optical domain are wasted. Reduced system performance.

In order to solve the above problem, the embodiment provides a method for dynamic bandwidth allocation. The execution body of the method may be a media converter. The media converter may be: but not limited to: MC, CLT (Coaxial Line Terminal, coaxial line terminal) Etc, as shown in Figure 6, includes:

601. The media converter receives the CNU data request message sent by the CNU.

The CNU data message includes but is not limited to: CNU's sending authorization request, and the CNU's sending authorization request may be, but not limited to, a bandwidth resource for requesting the CNU, or a cache condition for describing the CNU's data to be transmitted.

602. Send a CNU data message to the 0LT according to the sending permission of the media converter, so that the 0LT The CNU is allocated bandwidth resources according to the CNU's sending authorization request.

The transmission authority of the media converter includes but is not limited to: 0LT allocates bandwidth resources for the media converter.

After using the above solution, the media converter receives the CNU data message sent by the CNU, the CNU data message includes a CNU transmission authorization request, and the CNU transmission authorization request is used to request the CNU bandwidth resource; and sends the transmission to the 0LT according to the transmission permission of the media converter. The CNU data message, so that the 0LT allocates bandwidth resources to the CNU according to the CNU's sending authorization request, and the media converter's sending authorization includes: 0LT allocates bandwidth resources for the media converter. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The uplink data is sent under the transmission authorization, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

The techniques provided in the embodiments of the present invention will be more clearly understood by those skilled in the art.

This embodiment provides another method for dynamic bandwidth allocation, which is a further extension of the method shown in FIG. 6. FIG. 7 is a system structure diagram of the embodiment. The method may include:

The media converter sends an authorization request to the 0LT transmission media converter, and the media converter receives the transmission authorization of the media converter sent by the OLT; and the media converter can also receive the CNU transmission authorization request sent by the CNU; the media converter according to the received medium Transmitter authorization The authorization start time and the authorization window send the CNU transmission authorization request, the CNU data, and the media converter's transmission authorization request to the OLT (the above-mentioned media converter's transmission authorization request can be used to request to send the current bandwidth resources of each queue). After receiving the transmission authorization of the first media converter corresponding to the transmission authorization request of the first media converter, transmitting the first part of data and the second medium converter's transmission authorization request, when receiving the second After the media converter sends the authorization, the second part of the data and the next media converter's transmission authorization request are sent, and the subsequent steps are described.) If the media converter receives the CNU transmission authorization, the format conversion may be performed. The CNU's sending authorization is sent to the CNU (or the CNU's sending authorization can also be sent directly to the CNU). The CNU sends the service and management data to the media converter and the next CNU's sending authorization request according to the CNU sending authorization.

As shown in FIG. 8, the method specifically includes:

801. The media converter sends a transmission authorization request to the media converter to the 0LT.

Further, the transmission authorization request of the media converter may be, but is not limited to, an uplink bandwidth resource for requesting the CNU, and the transmission authorization request of the media converter includes but is not limited to: an uplink bandwidth resource requested by the media converter.

As an implementation manner of this embodiment, the sending authorization request of the media converter further includes: but is not limited to: each LL ID (Log ID), the uplink data to be sent or A bandwidth resource request, or a total pending data condition or a total bandwidth resource request for the media converter uplink.

The bandwidth resource requested by the media converter may be, but is not limited to, total to-be-sent data for the media converter to send the media converter to the OLT, and the total data to be transmitted includes but is not limited to: a media converter At least one of sending an authorization request, a mediator's pending data, and a CNU data message. As an implementation manner of this embodiment, the transmission authorization request of the media converter may be, but is not limited to, a REPORT message of the media converter, where the REPORT message is used to indicate a data bandwidth resource requested by the media converter, and the REPORT message includes but is not limited to Data queue length or bandwidth resource request to be sent, etc.

Further, the sending authorization may refer to an uplink sending authorization, including an uplink of the optical domain and the coaxial domain.

8 02. The media converter receives the CNU data message sent by the CNU.

The CNU data message includes but is not limited to: CNU sends an authorization request, and the CNU sends an authorization request including but not limited to: bandwidth resources of the CNU request.

When the CNU has traffic and management data that needs to be sent to the 0LT, the CNU sends a CNU send authorization request to the media converter.

As an implementation of this embodiment, the CNU's sending authorization request may be a CNU REPORT message, and the CNU REPORT message includes, but is not limited to, a bandwidth resource of the CNU request, or a length of the data queue to be sent by the CNU.

Further, the CNU data message further includes: service and management data.

8 03. Determine whether the format of the CNU data message is allowed to be transmitted in the optical domain. If not allowed, go to step 8 04 and if it is allowed, go to step 8 05.

In this embodiment, the determination of whether the format of the CNU data message is allowed to be transmitted in the optical domain is not limited, and is a technique well known to those skilled in the art, and may be set according to actual needs, and details are not described herein again. 8 04. Formatting the CNU data message so that the converted CNU data message can be sent to the 0LT.

The CNU belongs to the coaxial domain device, and the 0LT belongs to the optical domain device. If the format of the CNU data message is not allowed to be transmitted in the optical domain, the media converter needs to convert the format of receiving the CNU data message to be suitable for the light. The format transmitted in the domain is such that the converted CNU data message can be sent to the OLT.

8 05. The media converter receives the transmission authorization sent by the 0LT.

As an implementation manner of this embodiment, the sending authorization received by the media converter in this step may be a transmission authorization of the media converter or a transmission authorization of the CNU.

Further, the transmission authority of the media converter or the transmission authority of the CNU provided in this embodiment may be a GATE message of the media converter or a GATE message of the CNU, respectively. The GATE message of the media converter includes the bandwidth resource allocated by the 0LT to the media converter according to the REPORT message of the media converter, that is, the authorization start time and the authorization window of the media converter to send the data; the GNU message of the CNU includes the 0LT REPORT message according to the CNU. The bandwidth resource allocated for the CNU, that is, the authorization start time and authorization window for the CNU to send data.

8 06. Determine whether the sending authorization is a sending authorization of the media converter or a sending authorization of the CNU according to the identifier included in the sending authorization. If it is the transmission authority of the media converter, go to step 8 07. If the CNU sends the authorization, go to step 8 08.

The transmission authority of the media converter includes but is not limited to: the identifier of the media converter, and the CNU's transmission authorization includes: CNU identification.

8 07. Send a CNU data message to the 0LT according to the transmission authority of the media converter, so that 0LT The CNU is allocated bandwidth resources according to the CNU's sending authorization request.

Further, the media converter follows the scheduling principle of the MC to transmit data corresponding to the transmission authority of the media converter and the next media converter authorization request of the media converter data.

In this embodiment, the data sent by the media converter to the OLT according to the transmission authorization of the media converter is not limited, and is a technology well known to those skilled in the art, and may be set according to actual needs, and details are not described herein again.

Further, the CNU data message may include: a CNU logical link tag LL ID requesting a bandwidth resource. At least one LL ID can be included in each CNU.

The mediator's sending authorization request is used to request bandwidth resources of different LL IDs respectively; or

The media converter's transmit grant request is used to request bandwidth resources according to the total bandwidth resource required. The total bandwidth resources include: the sum of the bandwidth resources requested by all LL IDs, and the bandwidth resources requested by the media converter itself.

The method for obtaining the CNU LL ID without the converter may include: obtaining from a CNU data message; or.

The media converter stores a correspondence between the LL ID and the transmission authorization time. After receiving the transmission authorization request, the media converter queries the LL ID corresponding to the transmission authorization request received at the time according to the received transmission authorization request.

This embodiment does not limit the method for obtaining the LL ID by the media converter, and is a person skilled in the art. The technology is well known and can be set according to actual needs, and will not be described here. Go to step 8 01.

8 08. Determine whether the format of the CNU's transmission authorization is allowed to be transmitted in the coaxial domain. If not allowed, step 8 09 is performed, and if allowed, step 8 1 0 is performed.

The method for determining whether the format of the transmission authorization of the CNU is allowed to be transmitted in the coaxial domain is not limited, and is a technique well known to those skilled in the art, and may be set according to actual needs, and details are not described herein again.

8 09. The media converter performs format conversion on the CNU transmission authorization, so that the CNU transmission authorization after the conversion format can be sent to the CNU.

The CNU belongs to the coaxial domain device, and the 0LT belongs to the optical domain device. The media converter needs to convert the format of the transmission authorization received by the CNU into a MAP format suitable for transmission in the coaxial domain, so that the formatted CNU is converted. Sending authorizations can be sent to the CNU.

The method for converting the transmission authorization format of the CNU is not limited, and is a technology that is well known to those skilled in the art, and can be set according to actual needs, and details are not described herein again.

Further, the CNU transmission authorization includes but is not limited to: 0LT allocates bandwidth resources allocated to the CNU according to the CNU authorization request after the conversion format.

Further, the bandwidth resource allocated by the 0LT to the CNU may be, but not limited to, used by the CNU to send service and management data to the media converter and the CNU's transmission authorization request.

8 1 0. The media converter sends the CNU send authorization to the CNU.

It should be noted that, if the transmission authority of the media converter receiving the 0LT transmission is formatted in step 850, this step is a CNU after the media converter sends the converted format to the CNU. Send authorization.

8 1 1. The CNU sends a CNU data message to the media converter according to the received CNU transmission authorization.

As an implementation manner of this embodiment, the sending authorization of the CNU may be, but not limited to, a GATE message of the CNU. The GNU message of the CNU includes but is not limited to: an authorization start time and an authorization window of the CNU sending data, or a format conversion. MAP message, etc.

The CNU sends a CNU data message to the media converter according to the received GATE message, where the CNU data message includes: the current service and management data to be sent, or the data bandwidth request to be sent, and the like.

Further, the CNU data message includes but is not limited to: CNU service and management data, and CNU sends an authorization request.

After using the above solution, the media converter receives the CNU data message sent by the CNU, the CNU data message includes the CNU sending authorization request, the CNU sending authorization request is used to request the CNU bandwidth resource; and according to the media converter's sending authorization to the 0LT Sending a CNU data message, and sending an authorization request, the media converter's sending authorization request is used to indicate the media converter's bandwidth resource request or the buffering of the to-be-sent data; 0LT allocates bandwidth resources to the CNU according to the CNU's sending authorization request, the medium The transmit authorization of the converter includes: 0LT allocates bandwidth resources for the media converter. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. Sending data under the authorization of the transmission, which can avoid the deviation or jitter caused by the authorization window of the coaxial domain and the authorization window of the optical domain. The problem of degraded performance.

This embodiment provides another method for dynamic bandwidth allocation, and the execution body of the method may be

0LT, as shown in Figure 9, includes:

9 01, 0LT Receives the C data message sent by the media converter.

The CNU data message may be sent by the media converter to the OLT according to the transmission authority of the media converter. The CNU data message includes but is not limited to: a CNU sending authorization request, the CNU sending authorization request is used to request the CNU bandwidth resource, and the media converter The transmission authorization includes but is not limited to: 0LT allocates bandwidth resources for the media converter.

9 02. Bandwidth resource allocation is performed for C Li according to the CNU's sending authorization request.

9 03. Send the CNU send authorization to the media converter, so that the media converter sends the CNU send authorization to the CNU.

The CNU's sending authorization includes but is not limited to: 0LT allocates bandwidth resources for the CNU.

After using the above scheme, the 0LT receives the CNU data message sent by the media converter, and the CNU data message is sent by the media converter to the OLT according to the transmission permission of the media converter. The CNU data message includes: CNU sending authorization request, CNU sending The authorization request is used to request the bandwidth resource of the CNU. The transmission authority of the media converter includes: 0LT allocates bandwidth resources for the media converter; allocates bandwidth resources for the CNU according to the CNU's sending authorization request; sends the CNU transmission authorization to the media converter. , so that the media converter sends a CNU transmission authorization to the CNU, and the CNU transmission authorization includes the bandwidth resource allocated by the 0LT for the CNU. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The data is transmitted under the authorization of the transmission, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

This embodiment provides another method for dynamic bandwidth allocation, which is a further extension of the method shown in FIG. 9, as shown in FIG. 10, including:

1 001, 0LT Receive CNU data messages sent by the media converter.

Further, the CNU data message further includes: service and management data.

1 002. Allocate bandwidth resources for the CNU according to the CNU's sending authorization request.

Further, the bandwidth resource allocated by the 0LT to the CNU according to the CNU authorization request can be used by the CNU to send service and management data and CNU authorization requests to the media converter.

1 00 3. Send the CNU's send authorization to the media converter, so that the media converter sends a CNU send authorization to the CNU.

1 004. Receive a transmission authorization request of a media converter sent by the media converter.

Further, the transmission authorization request of the media converter may be, but is not limited to, a bandwidth resource for requesting the media converter, and the transmission authorization request of the media converter includes but is not limited to: a bandwidth resource requested by the media converter.

1 005. Perform bandwidth resource division on the media converter according to the transmission authorization request of the media converter. Match.

Further, the CNU data message includes: a CNU logical link tag LLID requesting a bandwidth resource.

The bandwidth resource allocation to the media converter according to the transmission authority request of the media converter includes, but is not limited to: requesting bandwidth resources according to the broadband resources required by different LLIDs, respectively.

As an implementation manner of this embodiment, the media converter requests bandwidth resources according to the broadband resources required by different LLIDs, so that the 0LT requests bandwidth resources to allocate bandwidth resources to the CNU according to different LLIDs.

Specifically, the media converter receives and sends a CNU data message respectively identified by LLID1 and LLID2 to the OLT, and the 0LT can identify the service and management data of different CNUs by using the LLID; then, 0LT is the service and management data identified by LLID1 and LLID2, respectively. The resource allocation is performed, and the transmission authorization corresponding to LLID1 and LLID2 is obtained, and the transmission 4 authorization corresponding to LLID1 and LLID2 can be respectively sent to the media converter.

Alternatively, performing bandwidth resource allocation on the media converter according to the sending authorization request of the media converter further includes: requesting the bandwidth resource according to the required total bandwidth resource, where the total bandwidth resource includes: a sum of bandwidth resources requested by all LL IDs, and a media converter The bandwidth resource requested by itself.

Specifically, the media converter receives and sends a CNU data message respectively identified by LLID1 and LLID2 to the OLT, and the 0LT can identify the service and management data of different CNUs by using the LLID, and can obtain the service and management of the CNU identified by the LLID1 and the LLID2. The sum of the data and the bandwidth resource locally requested by the media converter; sending a transmission authorization request including the sum of the bandwidth resources to the OLT, and the 0LT allocates the bandwidth resource according to the sum of the bandwidth resources, and The media converter sends a send authorization.

The method for the bandwidth allocation of the media converter in this embodiment is not limited, and is not limited to the above-mentioned methods, and may be set according to actual needs, and details are not described herein again.

1 006. Send a transmission authorization of the media converter to the media converter.

It should be noted that, in this embodiment, steps 1 001 to 00 3 are used to describe that the OLT allocates bandwidth resources for the CNU, and steps 1 004 to 006 are used to describe the OLT to allocate bandwidth resources to the media converter. At the same time, the bandwidth resource allocation is performed for the CNU and the media converter, and the bandwidth resource allocation can be separately performed for the CNU and the media converter, but the order of resource allocation is not limited.

After using the above scheme, the 0LT receives the CNU data message sent by the media converter, and the CNU data message is sent by the media converter to the OLT according to the transmission permission of the media converter. The CNU data message includes: CNU sending authorization request, CNU sending The authorization request is used to request the bandwidth resource of the CNU. The transmission authority of the media converter includes: 0LT allocates bandwidth resources for the media converter; allocates bandwidth resources for the CNU according to the CNU's sending authorization request; sends the CNU transmission authorization to the media converter. , so that the media converter sends a CNU transmission authorization to the CNU, and the CNU transmission authorization includes the bandwidth resource allocated by the 0LT for the CNU. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The uplink data is sent under the transmission authorization, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

Some virtual device embodiments are provided below, and the virtual device embodiments are respectively shown in FIG. 6 above. The embodiment provided in Fig. 10 corresponds.

The embodiment provides a device for dynamic bandwidth allocation. As shown in FIG. 11, the first receiving unit 1 1 1 is configured to receive a CNU data message sent by the CNU, where the CNU data message includes a CNU sending authorization request, CNU. The sending authorization request is used to request the bandwidth resource of the CNU;

The first sending unit 1 1 2 is configured to send a CNU data message to the OLT according to the sending authorization of the media converter, so that the OLT allocates bandwidth resources to the CNU according to the CNU sending authorization request, where the media converter sends the authorization: 0LT is the medium The bandwidth resource allocated by the converter.

After the foregoing solution, the first receiving unit is configured to receive a CNU data message sent by the CNU, where the CNU data message includes a CNU sending authorization request, and the CNU sending authorization request is used to request a bandwidth resource of the CNU; The CNU data message is sent to the OLT according to the sending authorization of the media converter, so that the OLT allocates the bandwidth resource to the CNU according to the CNU's sending authorization request, and the media converter's sending authorization includes: 0LT allocates the bandwidth resource for the media converter. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. Sending data under the authorization of the transmission can avoid the problem that the system performance is degraded due to the deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

This embodiment provides a device for dynamic bandwidth allocation. The device is a further extension of the device shown in FIG. 11. As shown in FIG. 12, the method includes:

The first receiving unit 1 2 1 is configured to receive a CNU data message sent by the CNU, and the CNU data is cancelled. The information includes the CNU sending authorization request, and the CNU sending authorization request is used to request the bandwidth resource of the CNU;

The first sending unit 122 is configured to send a CNU data message to the OLT according to the sending authorization of the media converter, so that the OLT allocates bandwidth resources to the CNU according to the CNU sending authorization request, where the media converter sends the authorization: 0LT is the media converter. The allocated bandwidth resource.

Further, the apparatus for dynamic bandwidth allocation provided by this embodiment further includes:

The first determining unit 123 is configured to determine whether the format of the CNU data message is allowed to be transmitted in the optical domain before sending the CNU data message to the OLT according to the sending authorization of the media converter; the first converting unit 124, if When allowed, the CNU data message is format converted so that the converted format CNU data message can be sent to the OLT.

The second receiving unit 125 is configured to receive the sending authorization sent by the 0LT before sending the CNU data message to the 0LT according to the sending authorization of the media converter;

The determining unit 126 is configured to determine, according to the identifier included in the sending authorization, whether the sending authorization is a sending authorization of the media converter or a sending authorization of the CNU, and the sending authorization of the CNU includes a bandwidth resource allocated by the 0LT to the CNU.

The second determining unit 127 is configured to, after determining, according to the identifier included in the sending authorization, whether the sending authorization is a sending authorization of the media converter or a sending authorization of the CNU, if the sending authorization is

The CNU sends an authorization to determine whether the format of the CNU's transmission authorization is allowed to be transmitted in the coaxial domain; The second converting unit 128 is configured to: if not allowed, perform format conversion on the CNU transmission authorization, so that the CNU transmission authorization of the converted format can be sent to the CNU;

The second sending unit 129 is configured to send, to the CNU, a transmission authorization of the CNU after the conversion format. Further, the apparatus for dynamic bandwidth allocation provided by this embodiment further includes:

The third sending unit 1210 is configured to send a sending authorization request of the media converter to the OLT before sending the CNU data message to the OLT according to the sending permission of the media converter, where the mediator's sending authorization request is used to request the bandwidth of the media converter Resources, so that the OLT allocates bandwidth resources to the media converter according to the transmission authorization request of the media converter;

The third receiving unit 1211 is configured to receive a transmission authorization of the media converter.

Further, the CNU data message received by the first receiving unit 121 further includes: service and management data.

Further, the CNU data message includes: a CNU logical link tag LLID requesting a bandwidth resource;

The mediator's sending authorization request is used to request bandwidth resources of different LLIDs respectively; or

The mediator's transmit grant request is used to request bandwidth resources according to the total bandwidth resource required. The total bandwidth resources include: the sum of all the bandwidth resources requested by the LLID, and the bandwidth resources requested by the media converter itself.

After the foregoing solution, the first receiving unit is configured to receive a CNU data message sent by the CNU, where the CNU data message includes a CNU sending authorization request, and the CNU sending authorization request is used to request a bandwidth resource of the CNU; Send to 0LT according to the transmission authorization of the media converter CNU data message, so that the OLT performs bandwidth resource allocation to the CNU according to the CNU's sending authorization request, and the media converter's sending authorization includes: 0LT allocates bandwidth resources for the media converter. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The uplink data is sent under the transmission authorization, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

The embodiment provides another device for dynamic bandwidth allocation, as shown in FIG. 13 , comprising: a first receiving unit 1 3 1 for receiving a CNU data message sent by a media converter, where the CNU data message is a media converter according to The transmission authority of the media converter is sent to the OLT. The CNU data message includes: the CNU sends an authorization request, the CNU sends an authorization request for requesting the bandwidth resource of the CNU, and the transmission authority of the media converter includes: 0LT allocates a bandwidth resource for the media converter. a first allocating unit 1 32, configured to perform bandwidth resource allocation for the CNU according to the CNU sending authorization request;

The first sending unit 1 3 3 is configured to send a CNU transmission authorization to the media converter, so that the media converter sends a CNU transmission authorization to the CNU, and the CNU transmission authorization includes a bandwidth resource allocated by the CLT to the CNU.

After the foregoing solution, the first receiving unit is configured to receive a CNU data message sent by the media converter, and the CNU data message is sent by the media converter to the 0LT according to the sending permission of the media converter, where the CNU data message includes: CNU sending authorization The request, the CNU sends an authorization request for requesting the bandwidth resource of the CNU, and the transmission authority of the media converter includes: 0LT is a media converter a bandwidth allocation resource; a first allocation unit, configured to perform bandwidth resource allocation for the CNU according to a CNU transmission authorization request; a first sending unit, configured to send a CNU transmission authorization to the media converter, so that the media converter sends the CNU to the CNU The sending authorization, the CNU's sending authorization includes the bandwidth resources allocated by the 0LT for the CNU. The media converter uses 0LT to send CNU data messages to the 0LT for its allocated bandwidth resources, instead of sending CNU data messages to the 0LT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The uplink data is sent under the transmission authorization, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

This embodiment provides another device for dynamic bandwidth allocation. The device is a further extension to the device shown in FIG. 13, as shown in FIG.

The first receiving unit 1 4 1 is configured to receive a CNU data message sent by the media converter, where the CNU data message is sent by the media converter to the OLT according to the sending permission of the media converter, where the CNU data message includes: CNU sending an authorization request, CNU The sending authorization request is used to request the bandwidth resource of the CNU, and the sending authorization of the media converter includes: 0LT allocates a bandwidth resource for the media converter; the first allocating unit 1 4 2 is configured to perform bandwidth resources for the CNU according to the CNU sending authorization request. Assignment

The first sending unit 1 4 3 is configured to send a CNU transmission authorization to the media converter, so that the media converter sends a CNU transmission authorization to the CNU, and the CNU transmission authorization includes a bandwidth resource allocated by the CLT to the CNU.

a second receiving unit 1 44, configured to send a CNU transmission authorization to the media converter, Receiving a transmission authorization request of the media converter sent by the media converter, and the sending authorization request of the media converter is used to request a bandwidth resource of the media converter;

a second allocating unit 145, configured to perform bandwidth resource allocation on the media converter according to the sending authorization request of the media converter;

The second sending unit 146 is configured to send a transmission authorization of the media converter to the media converter. Further, the CNU data message received by the first receiving unit 141 further includes: service and management data.

The allocation unit 142 includes:

The first allocation module 1421 is configured to request bandwidth resources of different LLIDs respectively; or the second allocation module 1422 is configured to request bandwidth resources according to the total bandwidth resources required, where the total bandwidth resources include: a sum of bandwidth resources requested by all LLIDs, And the bandwidth resources requested by the media converter itself.

After the foregoing solution, the first receiving unit is configured to receive a CNU data message sent by the media converter, and the CNU data message is sent by the media converter to the 0LT according to the sending permission of the media converter, where the CNU data message includes: CNU sending authorization The CNU sends an authorization request for requesting the bandwidth resource of the CNU, and the transmission authority of the media converter includes: 0LT allocates a bandwidth resource for the media converter; and the first allocation unit is configured to perform bandwidth resources for the CNU according to the CNU sending authorization request. The first sending unit is configured to send a CNU sending authorization to the media converter, so that the media converter sends a CNU sending authorization to the CNU, and the CNU sending authorization includes 0LT Bandwidth resources allocated by the CNU. The media converter uses 0LT to send CNU data messages to the 0LT for its allocated bandwidth resources, instead of sending CNU data messages to the 0LT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The uplink data is sent under the transmission authorization, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

Some physical device embodiments are provided below, which correspond to the embodiments provided in Figures 6 through 10, respectively.

This embodiment provides a media converter, as shown in FIG. 15, including:

The receiver 1 5 1 is configured to receive a CNU data message sent by the CNU, the CNU data message includes a CNU sending authorization request, the CNU sending authorization request is used to request the CNU bandwidth resource, and the transmitter 1 5 2 is configured to convert according to the medium. The sending authorization of the device sends a CNU data message to the OLT, so that the OLT allocates the bandwidth resource to the CNU according to the sending authorization request of the CNU, and the sending authorization of the media converter includes: 0LT allocates the bandwidth resource for the media converter.

After the foregoing solution, the receiver is configured to receive a CNU data message sent by the CNU, the CNU data message includes a CNU send authorization request, the CNU send authorization request is used to request the CNU bandwidth resource, and the transmitter is configured to convert according to the medium. The sending authorization of the device sends a CNU data message to the OLT, so that the OLT allocates the bandwidth resource to the CNU according to the sending authorization request of the CNU, and the sending authorization of the media converter includes: 0LT allocates the bandwidth resource for the media converter. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. Sending uplink data under the authorization of sending, which can avoid the coaxial The problem that the domain's authorization window deviates or shakes with the optical domain's authorization window, causing system performance degradation.

This embodiment provides another media converter, which is a further extension of the media converter shown in FIG. 15, as shown in FIG.

The receiver 161 is configured to receive a CNU data message sent by the CNU, where the CNU data message includes a CNU send authorization request, the CNU send authorization request is used to request the CNU bandwidth resource, and the transmitter 162 is configured to send the authorization according to the media converter. Sending a CNU data message to the OLT, so that the OLT allocates bandwidth resources to the CNU according to the CNU's sending authorization request, and the media converter's sending authorization includes: 0LT allocates a bandwidth resource for the media converter.

Further, the media converter provided in this embodiment further includes:

The processor 163 is further configured to: before sending the CNU data message to the OLT according to the sending permission of the media converter, determining whether the format of the CNU data message is allowed to be transmitted in the optical domain; if not, performing the CNU data message The format conversion enables the converted CNU data message to be sent to the OLT.

Further, the receiver 161 is further configured to: before sending the CNU data message to the 0LT according to the sending permission of the media converter, receive the sending authorization of the media converter sent by the 0LT;

The transmitter 162 is further configured to send a transmission authorization request of the media converter to the OLT before receiving the transmission authorization of the media converter sent by the OLT, and the transmission authorization request of the media converter is used to request the bandwidth resource of the media converter, so as to The media converter is allocated bandwidth resources according to the transmission authority request of the media converter.

Further, the receiver 161 is further configured to transmit to the OLT according to the transmission authority of the media converter. After the CNU data message is sent, the CNU transmission authorization sent by the OLT is received, and the CNU transmission authorization includes: 0LT allocates a bandwidth resource for the CNU.

Further, the processor 1 6 3 is further configured to: after receiving the transmission authorization of the CNU sent by the 0LT, determine whether the format of the CNU transmission authorization is allowed to be transmitted in the coaxial domain;

If not allowed, the CNU transmission authorization is format converted, so that the CNU transmission authorization after the conversion format can be sent to the CNU;

The transmitter 1 62 is also used to send the CNU transmission authorization of the converted format to the CNU.

Further, the CNU data message received by the receiver 116 may further include: CNU service and management data and/or CNU logical link label LL I D requesting bandwidth resources;

The mediator's transmit authorization request is used to request bandwidth resources of different LL I Ds respectively; or

The media converter's transmit grant request is used to request bandwidth resources according to the total bandwidth resource required. The total bandwidth resources include: the sum of the bandwidth resources requested by all LL I Ds, and the bandwidth resources requested by the media converter itself.

After the foregoing solution, the receiver is configured to receive a CNU data message sent by the CNU, the CNU data message includes a CNU send authorization request, the CNU send authorization request is used to request the CNU bandwidth resource, and the transmitter is configured to convert according to the medium. The sending authorization of the device sends a CNU data message to the OLT, so that the OLT allocates the bandwidth resource to the CNU according to the sending authorization request of the CNU, and the sending authorization of the media converter includes: 0LT allocates the bandwidth resource for the media converter. The media converter uses the 0LT to send a CNU data message to the 0LT for its allocated bandwidth resource, instead of sending a CNU data message to the 0LT using the bandwidth resource allocated for the CNU in the prior art, thus, the medium is transferred. The converter only transmits the uplink data under the transmission authorization of the media converter, thereby avoiding the problem that the system performance is degraded due to the deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

This embodiment provides an 0LT, as shown in FIG. 17, including:

The receiver 171 is configured to receive a CNU data message sent by the media converter, where the CNU data message is sent by the media converter to the OLT according to the sending permission of the media converter, where the CNU data message includes: the CNU sends an authorization request, and the CNU sends the authorization request. In requesting the bandwidth resource of the CNU, the transmission authority of the media converter includes: 0LT allocates a bandwidth resource for the media converter;

The processor 172 is configured to perform bandwidth resource allocation for the CNU according to the CNU sending authorization request. The transmitter 173 is configured to send a CNU sending authorization to the media converter, so that the media converter sends the CNU sending authorization to the CNU, and the CNU sends the CNU. Authorization includes the bandwidth resources allocated by the 0LT for the CNU.

Further, the receiver 171 is further configured to: before sending the CNU transmission authorization to the media converter, receive a transmission authorization request of the media converter sent by the media converter, and the media converter sends an authorization request for requesting the media converter. Bandwidth resources;

The processor 172 is further configured to perform bandwidth resource allocation on the media converter according to the sending authorization request of the media converter;

The transmitter 173 is further configured to send a transmission authorization of the media converter to the media converter.

Further, the CNU data message received by the receiver 171 further includes: service and management data. Further, the CNU data message includes: a CNU logical link tag requesting a bandwidth resource

LLID; The processor 1 72 is specifically configured to request bandwidth resources of different LL IDs respectively; or, according to the required total bandwidth resources, request bandwidth resources, where the total bandwidth resources include: a sum of bandwidth resources requested by all LL IDs, and a request of the media converter itself Bandwidth resources.

After the foregoing solution, the receiver is configured to receive a CNU data message sent by the media converter, where the CNU data message is sent by the media converter to the OLT according to the sending permission of the media converter, and the CNU data message includes: the CNU sends an authorization request, The CNU sends an authorization request for requesting the bandwidth resource of the CNU, and the transmission authority of the media converter includes: 0LT allocates a bandwidth resource for the media converter; and the processor is configured to allocate bandwidth resources for the CNU according to the CNU sending authorization request; the transmitter And sending a CNU transmission authorization to the media converter, so that the media converter sends a CNU transmission authorization to the CNU, and the CNU transmission authorization includes a bandwidth resource allocated by the 0LT to the CNU. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The uplink data is sent under the transmission authorization, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

The embodiment provides a dynamic bandwidth allocation system, as shown in FIG. 18, including: the dynamic bandwidth allocation device 1 8 1 provided in FIG. 11 or FIG. 12 and the dynamic bandwidth provided in FIG. 13 or FIG. Assigned device 1 82.

After using the above solution, the media converter receives the CNU data message sent by the CNU, the CNU data message includes a CNU transmission authorization request, and the CNU transmission authorization request is used to request the CNU bandwidth resource; and sends the transmission to the 0LT according to the transmission permission of the media converter. CNU data message, so 0LT The CNU is allocated bandwidth resources according to the CNU's sending authorization request, and the media converter's sending authorization includes: 0LT allocates bandwidth resources for the media converter. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. The uplink data is sent under the transmission authorization, thereby avoiding the problem that the performance of the system is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

This embodiment provides another system for dynamic bandwidth allocation, as shown in FIG. 19, including: the media converter 1 9 1 provided in FIG. 15 or FIG. 16 and the 0LT 1 9 2 provided in FIG.

After using the above solution, the media converter receives the CNU data message sent by the CNU, the CNU data message includes a CNU transmission authorization request, and the CNU transmission authorization request is used to request the CNU bandwidth resource; and sends the transmission to the 0LT according to the transmission permission of the media converter. The CNU data message, so that the 0LT allocates bandwidth resources to the CNU according to the CNU's sending authorization request, and the media converter's sending authorization includes: 0LT allocates bandwidth resources for the media converter. The media converter uses the 0LT to send CNU data messages to the OLT for its allocated bandwidth resources, instead of sending CNU data messages to the OLT using the bandwidth resources allocated for the CNU in the prior art, such that the media converter is only in the media converter. Sending uplink data under the transmission authorization can avoid the problem that the system performance is degraded due to deviation or jitter of the authorization window of the coaxial domain and the authorization window of the optical domain.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on such understanding, the technical solution of the present invention may be in the form of a software product in essence or in part contributing to the prior art. It is embodied that the computer software product is stored in a readable storage medium, such as a floppy disk, a hard disk or an optical disk of a computer, and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) The methods described in various embodiments of the invention are performed. The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims

1. A method of dynamic bandwidth allocation, characterized by including:

The media converter receives the CNU data message sent by the coaxial network unit CNU. The CNU data message includes a transmission authorization request of the CNU. The CNU transmission authorization request is used to request the bandwidth resources of the CNU;

Send the CNU data message to the optical line terminal OLT according to the transmission authorization of the media converter, so that the OLT allocates bandwidth resources to the CNU according to the transmission authorization request of the CNU, and the transmission authorization of the media converter It includes: the bandwidth resources allocated by the OLT to the media converter.

2. The method according to claim 1, characterized in that, before sending the CNU data message to the OLT according to the transmission authorization of the media converter, the method further includes:

Determine whether the format of the CNU data message is allowed to be transmitted in the optical domain; if not, perform format conversion on the CNU data message so that the converted CNU data message can be sent to the OLT.

3. The method according to claim 1 or 2, characterized in that, before sending the CNU data message to the OLT according to the transmission authorization of the media converter, the method further includes: sending a medium conversion to the OLT The transmission authorization request of the media converter is used to request the bandwidth resources of the media converter, so that the OLT allocates bandwidth resources to the media converter according to the transmission authorization request of the media converter.

Receive the sending authorization from the media converter sent by the OLT.

4. The method according to any one of claims 1 to 3, characterized in that, according to After the media converter is authorized to send the CNU data message to the OLT, the method further includes:

Receive the CNU transmission authorization sent by the OLT. The CNU transmission authorization includes: the bandwidth resources allocated by the OLT to the CNU.

5. The method according to claim 4, characterized in that, after receiving the transmission authorization of the CNU sent by the OLT, the method further includes:

Determine whether the format of the CNU's transmission authorization is allowed to be transmitted in the coaxial domain; if not, perform format conversion on the CNU's transmission authorization so that the converted CNU's transmission authorization can be sent to the CNU;

Send the transmission authorization of the CNU in the converted format to the CNU.

6. The method according to claim 5, characterized in that the CNU data message includes: a logical link tag LL ID of the CNU requesting bandwidth resources;

The media converter's sending authorization request is used to request bandwidth resources according to the broadband resources with different LL ID requirements; or,

The media converter's transmission authorization request is used to request bandwidth resources according to the total bandwidth resources required. The total bandwidth resources include: the sum of bandwidth resources requested by all LL IDs, and the bandwidth resources requested by the media converter itself.

7. A method of dynamic bandwidth allocation, characterized by including:

The OLT receives the CNU data message sent by the media converter. The CNU data message is sent by the media converter to the OLT according to the transmission authorization of the media converter. The CNU data message includes: CNU transmission authorization request, so The CNU send authorization request is used to request the CNU bandwidth resources, the transmission authorization of the media converter includes: the bandwidth resources allocated by the OLT to the media converter;

Allocate bandwidth resources to the CNU according to the CNU's sending authorization request; send the CNU's sending authorization to the media converter, so that the media converter sends the

CNU sends the CNU sending authorization, and the CNU sending authorization includes the OLT as the

Bandwidth resources allocated by CNU.

8. The method according to claim 7, characterized in that, before sending the CNU transmission authorization to the media converter, the method further includes:

Receive a transmission authorization request of the media converter sent by the media converter, where the transmission authorization request of the media converter is used to request bandwidth resources of the media converter;

Allocate bandwidth resources to the media converter according to the transmission authorization request of the media converter;

Send a transmission authorization of the media converter to the media converter.

9. The method according to claim 8, characterized in that the CNU data message includes: the logical link tag LL ID of the CNU requesting bandwidth resources;

The allocation of bandwidth resources to the media converter according to the transmission authorization request of the media converter includes:

Request bandwidth resources based on the bandwidth resources required by different LL IDs; or,

Request bandwidth resources based on the total bandwidth resources required, which includes: the sum of bandwidth resources requested by all LL IDs, and the bandwidth resources requested by the media converter itself.

10. A media converter, characterized by including: A receiver, configured to receive a CNU data message sent by the CNU, where the CNU data message includes a transmission authorization request of the CNU, and the CNU transmission authorization request is used to request bandwidth resources of the CNU;

A transmitter configured to send the CNU data message to the OLT according to the transmission authorization of the media converter, so that the OLT allocates bandwidth resources to the CNU according to the transmission authorization request of the CNU, the media converter The sending authorization includes: bandwidth resources allocated by the OLT to the media converter.

11. The media converter according to claim 10, further comprising: the processor, further configured to: before sending the CNU data message to the OLT according to the transmission authorization of the media converter, Determine whether the format of the CNU data message is allowed to be transmitted in the optical domain; if not, perform format conversion on the CNU data message so that the format-converted CNU data message can be sent to the OLT.

12. The media converter according to claim 10 or 11, characterized in that the receiver is also used to receive the transmission authorization of the media converter sent by the OLT;

The transmitter is further configured to send a transmission authorization request of the media converter to the OLT before receiving the transmission authorization of the media converter sent by the OLT. The transmission authorization request of the media converter is used to request Bandwidth resources of the media converter, so that the OLT allocates bandwidth resources to the media converter according to the transmission authorization request of the media converter.

13. The media converter according to any one of claims 10 to 12, characterized in that the receiver is further configured to send the CNU to the OLT according to the transmission authorization of the media converter. After receiving the data message, the CNU's transmission authorization sent by the OLT is received, and the CNU's The sending authorization includes: the bandwidth resources allocated by the OLT to the CNU.

14. The media converter according to claim 13, wherein the processor is further configured to, after receiving the CNU transmission authorization sent by the OLT, determine whether the format of the CNU transmission authorization is changed. Allows transmission in the coaxial domain;

If it is not allowed, perform format conversion on the CNU's sending authorization so that the format-converted CNU's sending authorization can be sent to the CNU;

The transmitter is further configured to send the converted CNU transmission authorization to the CNU.

15. The media converter according to claim 14, wherein the CNU data message includes: the logical link tag LL ID of the CNU requesting bandwidth resources;

The transmission authorization requests of the media converter are respectively used to request bandwidth resources of different LL IDs; or,

1 6. An OLT, characterized by: including:

A receiver, configured to receive a CNU data message sent by the media converter. The CNU data message is sent by the media converter to the OLT according to the transmission authorization of the media converter. The CNU data message includes: CNU transmission authorization. request, the CNU sends an authorization request to request the bandwidth resources of the CNU, and the transmission authorization of the media converter includes: the bandwidth resources allocated by the OLT to the media converter; A processor, configured to allocate bandwidth resources to the CNU according to the transmission authorization request of the CNU;

A transmitter, configured to send the transmission authorization of the CNU to the media converter, so that the media converter sends the transmission authorization of the CNU to the CNU, and the transmission authorization of the CNU includes the allocation by the OLT for the CNU bandwidth resources.

17. The OLT according to claim 16, wherein the receiver is further configured to receive the media converter sent by the media converter before sending the CNU transmission authorization to the media converter. The sending authorization request of the media converter is used to request the bandwidth resources of the media converter;

The processor is also configured to allocate bandwidth resources to the media converter according to the transmission authorization request of the media converter;

The sender is also used to send the transmission authorization of the media converter to the media converter.

18. The OLT according to claim 17, wherein the CNU data message includes: a logical link tag LL ID of the CNU requesting bandwidth resources;

The processor is specifically used to request bandwidth resources according to the broadband resources required by different LL IDs; or,

19. A system for dynamic bandwidth allocation, characterized by including:

The media converter according to any one of claims 10 to 15 and claims 16 to 18 0LT described in any one of them.