CN101217496A - A data transmission method, system and device - Google Patents
A data transmission method, system and device Download PDFInfo
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- CN101217496A CN101217496A CNA2008100563769A CN200810056376A CN101217496A CN 101217496 A CN101217496 A CN 101217496A CN A2008100563769 A CNA2008100563769 A CN A2008100563769A CN 200810056376 A CN200810056376 A CN 200810056376A CN 101217496 A CN101217496 A CN 101217496A
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Abstract
The invention provides a data transmitting method, a system and a device. As a polymeric logic link is established according to a communication link between a central office end and a subscriber end in advance, the invention can determine the communication link and the channels used for transmitting data in the polymeric logic link based on the gained information of the communication environment and send data to a receiving end through the determined communication link and channels by a sending end. The logic connecting method realized by the polymeric link is completely different from the current fixed connecting methods such as 1: 32, 1: 64 or 1: 128 etc., which has remarkable flexibility in terms of bandwidth allocation and the selection of communication links and channels. Therefore, the invention can effectively avoid the occurrence that the bandwidth of the subscriber end is limited in the process of communication, which further improves the reliability of communication and improves the satisfaction of the users effectively.
Description
Technical Field
The present invention relates to communications technologies, and in particular, to a data transmission method, system, and apparatus.
Background
With the development of communication technology, communication networks such as Passive Optical Networks (PONs) are becoming mature. In a passive optical Network, an Optical Line Terminal (OLT) is generally connected to a plurality of optical Network units (ONTs)/optical Network terminals (ONUs) through an Optical Distribution Network (ODN). Such as 1: 32, 1: 64, or 1: 128, etc. OLTs: and the ONT/ONU connection mode. Wherein, OLT is the local side equipment, ONT/ONU is the customer premise equipment.
Currently, many users are usually connected below one customer premise equipment, and thus a large amount of bandwidth is needed. For enterprise-class users, the bandwidth required by the customer premise equipment will be larger; and with the development of network services, the bandwidth required by the customer premise equipment during communication will be larger, and the requirement on communication reliability will also be very high. However, the above requirements are obviously not the current OLT of 1: 32, 1: 64 or 1: 128, etc. in a fixed connection: the ONT/ONU connection mode can meet the requirement. This results in bandwidth limitation of the client device during communication, which significantly affects communication reliability and reduces user satisfaction.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a data transmission method, system and device to improve communication reliability and user satisfaction.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a data transmission method, which is characterized in that an aggregation logic link is established in advance according to a communication link between local side equipment and user side equipment, and the method also comprises the following steps:
acquiring current communication environment information, and determining a communication link and a channel for transmitting data in an aggregation logic link; and the sending end sends data to the receiving end through the determined communication link and the channel.
The creating method comprises the following steps: dividing communication links between a plurality of sending ends and a plurality of receiving ends into an aggregation logical link, and setting an identifier for the aggregation logical link.
The determination method comprises the following steps: and determining a communication link and a channel of a specific sending end related to the aggregation logical link for sending data according to the acquired communication environment information at the sending end side.
Wherein the communication environment information comprises at least one of a failure condition of a communication link, bandwidth allocation information, traffic congestion information, and service priority; the transmitting end is an optical line terminal OLT or an optical network unit ONT/optical network terminal ONU, and the receiving end is an ONT/ONU or OLT.
In the above scheme, the method further acquires the communication link failure information, and updates the available communication links in the aggregation logical link according to the acquired communication link failure information.
The present invention also provides a data transmission system, comprising: the local side equipment and the customer premise equipment are connected with each other through a communication link and are contained in the aggregation logic link; the system also comprises a local side management unit, a local side data processing unit and a local side link aggregation unit which are connected with the local side equipment; the system also comprises a user side management unit, a user side data processing unit and a user side link aggregation unit which are connected with the user side equipment; wherein,
the management units of the local side and the user side are used for configuring and managing the information of the aggregation logic link for the link aggregation units of the local side and the user side; the link aggregation units of the local side and the user side are used for determining a communication link and a channel used for sending data in the aggregation logical link according to the received aggregation logical link information and notifying the data processing unit of the determined communication link and channel; the data processing units of the local side and the user side are both used for sending the data to be sent through the communication link and the channel notified by the link aggregation unit.
The local side equipment and the user side equipment are provided with at least one communication interface, and the data transmission is realized through the communication interface.
One side of the local side equipment and the user side equipment is further provided with at least one connected fault monitoring unit; wherein,
the failure monitoring unit is configured to monitor a state of a communication link related to the aggregation logical link, and send the monitored state of the communication link to the link aggregation unit;
the link aggregation unit is further configured to update the aggregated logical link information according to the communication link status from the failure monitoring unit.
In the above scheme, the local side device is an OLT, and the customer premise device is an ONT/ONU.
The invention also provides a data transmission device, a communication link is connected between the device and opposite terminal equipment, and the connected communication link is contained in the aggregation logical link; the device comprises a management unit, a data processing unit and a link aggregation unit; wherein,
the management unit is used for configuring and managing the information of the aggregation logical link for the link aggregation unit;
the link aggregation unit is used for determining a communication link and a channel used for sending data in the aggregation logical link according to the received aggregation logical link information and notifying the data processing unit of the determined communication link and channel;
and the data processing unit is used for sending the data to be sent through the communication link and the channel notified by the link aggregation unit.
The device is provided with at least one communication interface, and the data is transmitted through the communication interface.
In the scheme, the device is further connected with a fault monitoring unit; wherein,
the failure monitoring unit is configured to monitor a state of a communication link related to the aggregation logical link, and send the monitored state of the communication link to the link aggregation unit;
the link aggregation unit is further configured to update the aggregated logical link information according to the communication link status from the failure monitoring unit.
In the above scheme, the device is an OLT or an ONT/ONU.
Therefore, the data transmission method, system and apparatus provided by the present invention can determine the communication link and channel used for transmitting data in the aggregation logical link according to the obtained communication environment information, and the transmitting end transmits data to the receiving end through the determined communication link and channel, because the aggregation logical link is created in advance according to the communication link between the local side device and the user side device. The logic connection mode realized by the aggregation logic link is completely different from the current fixed connection modes of 1: 32, 1: 64 or 1: 128 and the like, and has obvious flexibility in bandwidth allocation and communication link and channel selection, so that the condition that the bandwidth of user end equipment is limited in the communication process can be effectively avoided, the communication reliability is obviously improved, and the user satisfaction degree can be effectively improved.
Drawings
FIG. 1 is a flow chart of data transmission according to an embodiment of the present invention;
FIG. 2 is a simplified data transfer process according to the present invention;
FIG. 3 is a diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 4 is a diagram of a data transmission apparatus according to another embodiment of the invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a data transmission flow chart according to an embodiment of the present invention, where the flow includes the following steps:
step 101: and establishing an aggregation logic link according to the communication link between the local side equipment and the user side equipment.
Specifically, communication links between a certain number (e.g., n) of OLTs and a certain number (e.g., n) of ONUs/ONTs (or n PON interfaces on one ONU/ONT) may be divided into the same aggregation logical link through parameter setting, and an identifier may be set for the aggregation logical link. Such as: dividing communication links between a plurality of OLTs and an ONU/ONT connected with the OLTs into the same aggregation logic link (in this case, n PON interfaces on one ONU/OLT); dividing communication links between a plurality of ONUs/ONTs and the plurality of OLTs into the same aggregation logical link (in this case, the plurality of OLTs and the plurality of ONUs/ONTs are respectively connected one-to-one, and the plurality of connected communication links are aggregated into one aggregation logical link).
Step 102: whether the OLT or the ONU/ONT is used as the sending end, whether the sending end supports the aggregation communication or not is judged, and if so, the step 104 is directly carried out; otherwise, step 103 is entered.
Specifically, for the OLT and the ONU/ONT in which the communication link is divided into the aggregation logical links, the aggregation logical link identification may be set in these OLT and ONU/ONT in advance. Thus, when the judgment is carried out, the aggregation logical link identifiers set in the OLT and the ONU/ONT can be searched, and if the aggregation logical link identifiers are searched, the searched equipment is determined to support the aggregation communication; otherwise, it is determined that the searched device does not support aggregated communication.
Step 103: no matter the OLT or the ONU/ONT is used as a sending end, the sending end sends data to a receiving end according to a conventional mode.
Step 104: current communication environment information is acquired. The communication environment information generally includes: failure conditions of the communication link, bandwidth allocation information, traffic congestion information, traffic priority, etc.
Step 105: and determining a communication link and a channel for transmitting data in the aggregation logical link according to the acquired communication environment information.
Specifically, whether the OLT or the ONU/ONT is used as the transmitting end, the communication link and the channel of the specific transmitting end (e.g., one of the multiple OLTs on the OLT side, one of the multiple ONUs/ONTs on the ONU/ONT side, or one PON interface on the ONU/ONT) related to the aggregation logical link for transmitting data can be determined according to the acquired communication environment information on the transmitting end side. Such as: data is preferentially sent from the channel with the lowest degree of lossiness.
Step 106: and transmitting data to the receiving end by the determined transmitting end through the determined communication link and the determined channel. The receiving end can analyze and forward the received data and perform other subsequent processing.
Step 107: and acquiring the fault information of the communication link, and updating the available communication link in the aggregation logical link.
Specifically, this step may be executed in any link in the flow shown in fig. 1. This is because, at any time, both for the transmitting end and the receiving end, the available communication link in the aggregated logical link can be acquired and updated according to the acquired communication link failure information. Such as: a link A in a plurality of communication links of the OLT fails to normally communicate; in this case, the link a included in the aggregated logical link may be deleted or identified as unavailable, so that the failed link a and the channel included in the failed link a are no longer considered when subsequently re-determining the communication link and the channel used for transmitting data in the aggregated logical link.
Of course, if the acquired failure information of the communication link shows that the previously failed link a has recovered to work normally, the availability of the link a included in the aggregated logical link may be recovered in a manner of adding the link a or modifying the identifier of the link a to be usable, so that the link a and the channel included therein can be considered again when the communication link and the channel used for transmitting data in the aggregated logical link are determined again subsequently.
As can be seen from the description of fig. 1, the key operation in the data transmission process of the present invention is shown in fig. 2. Referring to fig. 2, fig. 2 is a simplified diagram of a data transmission process according to the present invention, which includes the following steps:
step 201: and establishing an aggregation logic link according to the communication link between the local side equipment and the user side equipment.
Step 202: and acquiring current communication environment information, and determining a communication link and a channel for transmitting data in the aggregation logical link.
Step 203: and the sending end sends data to the receiving end through the determined communication link and the channel.
As can be seen from the above description, since the aggregation logical link is created in advance according to the communication link between the office device and the customer premise device, the communication link and the channel for transmitting data in the aggregation logical link can be determined according to the obtained communication environment information, and the transmitting end transmits data to the receiving end through the determined communication link and channel. The logic connection mode realized by the aggregation logic link is completely different from the current fixed connection modes of 1: 32, 1: 64 or 1: 128 and the like, and has obvious flexibility in bandwidth allocation and communication link and channel selection, so that the condition that the bandwidth of user end equipment is limited in the communication process can be effectively avoided, the communication reliability is obviously improved, and the user satisfaction degree can be effectively improved.
In practical applications, a system as shown in fig. 3 may be provided, and the operations described with respect to fig. 1 and 2 may be implemented by the system. Referring to fig. 3, fig. 3 is a diagram of a data transmission apparatus according to an embodiment of the invention. In FIG. 3, the OLT is connected to the ONUs/ONTs via ODNs (e.g., communication interface A of OLT1 is connected to communication interface 1 of ONU/ONT1 and communication interface 2 of ONU/ONT2 via ODN1, and communication interface B of OLT2 is connected to communication interface n of ONU/ONT2 and communication interface n +1 of ONU/ONT3 via ODN2, respectively; of course, there may be multiple communication interfaces on each ONU/ONT).
Communication links between OLTs such as OLT1 and OLT2 and ONU/ONT2 belong to the same aggregation logical link, the OLT included in the dashed line box in the figure is an OLT related to the aggregation logical link, and ONU/ONT2 is an ONU/ONT related to the aggregation logical link. The local side management unit, the local side data processing unit, the local side link aggregation unit and the local side fault monitoring unit are respectively connected with the OLT related to the aggregation logical link (the units can be respectively or jointly arranged in independent equipment or can be arranged in one equipment together with the OLT); the user end management unit, the user end data processing unit, the user end link aggregation unit and the user end fault monitoring unit are respectively connected with the ONU/ONT related to the aggregation logical link (these units can be respectively or jointly arranged in independent equipment, and can also be arranged in one equipment together with the ONU/ONT).
Specifically, the management unit, whether the local side or the user side, is configured to configure and manage information of the aggregation logical link for the link aggregation unit; the link aggregation unit is used for determining a communication link and a channel used for sending data in the aggregation logical link according to a pre-configured aggregation protocol and the received aggregation logical link information, and informing the data processing unit of the determined communication link and channel; the data processing unit is used for receiving data and transmitting the data to be transmitted through the communication link and the channel notified by the link aggregation unit; as a communication entity that can be further added, the failure monitoring unit is configured to monitor a state of a communication link involved in the aggregated logical link, and send the monitored state of the communication link to the link aggregation unit, so that the link aggregation unit updates information of the aggregated logical link.
The aggregation protocol may comprise any aggregation protocol or algorithm currently in common use, such as: link Aggregation Control Protocol (LACP) in the ieee802.3ad standard.
On the premise that each communication entity shown in fig. 3 can normally operate, it may be assumed that n channels X1,... Xn are established in the communication link between OLT1 and ONU/ONT2, and m channels Y1,... Ym are established in the communication link between OLT2 and ONU/ONT 2; the communication interfaces such as communication interface 2 and communication interface n of ONU/ONT2 are normally configured independently. In this way, data that needs to be sent to the ONU/ONT2 can be sent over one channel of X1.. Xn or Y1.. Ym. And, communication link failure information of the X1.. Xn and Y1.. Ym channels can be acquired, and the available communication links (including the channels therein) in the aggregated logical link are updated according to the acquired communication link failure information. The link failure may be characterized as a LOSs of signal (LOS), LOSs of frame (LOF), Signal Failure (SF), etc.
For example, if the communication link between OLT1 and ONU/ONT2 fails, X1,.. Xn channel is stopped; the X1.. Xn channel can be reused if the failure of the communication link between OLT1 and ONU/ONT2 disappears.
The system shown in fig. 3 may also be arranged in the form shown in fig. 4 in view of the flexibility of the arrangement of the devices. Referring to fig. 4, fig. 4 is a diagram of a data transmission device according to another embodiment of the present invention. Fig. 4 differs from fig. 3 in that: communication interface n of ONU/ONT2 related to the aggregation logical link is set to ONU/ONT4 (of course, communication interfaces between communication interfaces 2 to n of ONU/ONT2 related to the aggregation logical link may be set to other ONU/ONTs), so that ONU/ONT2 and ONU/ONT4 are both ONU/ONTs related to the aggregation logical link.
It should be noted that, the data is transmitted and received through the communication interface, and the communication interface may be a PON interface.
As can be seen from the above description, since the aggregation logical link is created in advance according to the communication link between the office device and the customer premise device, the communication link and the channel for transmitting data in the aggregation logical link can be determined according to the obtained communication environment information, and the transmitting end transmits data to the receiving end through the determined communication link and channel. The logic connection mode realized by the aggregation logic link is completely different from the current fixed connection modes of 1: 32, 1: 64 or 1: 128 and the like, and has obvious flexibility in bandwidth allocation and communication link and channel selection, so that the condition that the bandwidth of user end equipment is limited in the communication process can be effectively avoided, the communication reliability is obviously improved, and the user satisfaction degree can be effectively improved.
Claims (13)
1. A data transmission method, wherein an aggregation logical link is created in advance according to a communication link between a local side device and a user side device, and the method further includes:
acquiring current communication environment information, and determining a communication link and a channel for transmitting data in an aggregation logic link; and the sending end sends data to the receiving end through the determined communication link and the channel.
2. The method of claim 1, wherein the creating method is:
dividing communication links between a plurality of sending ends and a plurality of receiving ends into an aggregation logical link, and setting an identifier for the aggregation logical link.
3. The method of claim 1, wherein the determining method is:
and determining a communication link and a channel of a specific sending end related to the aggregation logical link for sending data according to the acquired communication environment information at the sending end side.
4. The method of claim 1, wherein the communication environment information comprises at least one of a failure condition of a communication link, bandwidth allocation information, traffic congestion information, traffic priority; the transmitting end is an optical line terminal OLT or an optical network unit ONT/optical network terminal ONU, and the receiving end is an ONT/ONU or OLT.
5. The method according to any of claims 1 to 4, characterized by further obtaining communication link failure information, and updating available communication links in the aggregated logical link according to the obtained communication link failure information.
6. A data transmission system, comprising: the local side equipment and the customer premise equipment are connected with each other through a communication link and are contained in the aggregation logic link; the system also comprises a local side management unit, a local side data processing unit and a local side link aggregation unit which are connected with the local side equipment; the system also comprises a user side management unit, a user side data processing unit and a user side link aggregation unit which are connected with the user side equipment; wherein,
the management units of the local side and the user side are used for configuring and managing the information of the aggregation logic link for the link aggregation units of the local side and the user side;
the link aggregation units of the local side and the user side are used for determining a communication link and a channel used for sending data in the aggregation logical link according to the received aggregation logical link information and notifying the data processing unit of the determined communication link and channel;
the data processing units of the local side and the user side are both used for sending the data to be sent through the communication link and the channel notified by the link aggregation unit.
7. The system according to claim 6, wherein at least one communication interface is disposed on said local side device and said customer premise equipment, and said data transmission is implemented through said communication interface.
8. The system according to claim 6 or 7, wherein one side of said office device and said customer premise equipment is further provided with at least one connected failure monitoring unit; wherein,
the failure monitoring unit is configured to monitor a state of a communication link related to the aggregation logical link, and send the monitored state of the communication link to the link aggregation unit;
the link aggregation unit is further configured to update the aggregated logical link information according to the communication link status from the failure monitoring unit.
9. The system according to claim 6 or 7, wherein said central office device is an OLT and said customer premise equipment is an ONT/ONU.
10. A data transmission device is characterized in that a communication link is connected between the device and a corresponding terminal device, and the connected communication link is contained in an aggregation logical link; the device comprises a management unit, a data processing unit and a link aggregation unit; wherein,
the management unit is used for configuring and managing the information of the aggregation logical link for the link aggregation unit;
the link aggregation unit is used for determining a communication link and a channel used for sending data in the aggregation logical link according to the received aggregation logical link information and notifying the data processing unit of the determined communication link and channel;
and the data processing unit is used for sending the data to be sent through the communication link and the channel notified by the link aggregation unit.
11. The device of claim 10, wherein at least one communication interface is provided on the device, and wherein the data is transmitted via the communication interface.
12. Device according to claim 10 or 11, characterized in that the device is further connected with a fault monitoring unit; wherein,
the failure monitoring unit is configured to monitor a state of a communication link related to the aggregation logical link, and send the monitored state of the communication link to the link aggregation unit;
the link aggregation unit is further configured to update the aggregated logical link information according to the communication link status from the failure monitoring unit.
13. Device according to claim 10 or 11, characterized in that the device is an OLT or an ONT/ONU.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100563769A CN101217496A (en) | 2008-01-17 | 2008-01-17 | A data transmission method, system and device |
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| CNA2008100563769A CN101217496A (en) | 2008-01-17 | 2008-01-17 | A data transmission method, system and device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854567A (en) * | 2010-05-14 | 2010-10-06 | 中兴通讯股份有限公司 | Data transmission method and device of optical transmission layer |
| WO2010124463A1 (en) * | 2009-04-30 | 2010-11-04 | 西门子公司 | Communication method in automatic system |
| CN102480377A (en) * | 2010-11-25 | 2012-05-30 | 中兴通讯股份有限公司 | Management method and system of aggregation link |
-
2008
- 2008-01-17 CN CNA2008100563769A patent/CN101217496A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010124463A1 (en) * | 2009-04-30 | 2010-11-04 | 西门子公司 | Communication method in automatic system |
| CN102405621A (en) * | 2009-04-30 | 2012-04-04 | 西门子公司 | A communication method in an automation system |
| CN101854567A (en) * | 2010-05-14 | 2010-10-06 | 中兴通讯股份有限公司 | Data transmission method and device of optical transmission layer |
| WO2011140873A1 (en) * | 2010-05-14 | 2011-11-17 | 中兴通讯股份有限公司 | Data transport method and apparatus for optical transport layer |
| CN101854567B (en) * | 2010-05-14 | 2013-06-12 | 中兴通讯股份有限公司 | Data transmission method and device of optical transmission layer |
| CN102480377A (en) * | 2010-11-25 | 2012-05-30 | 中兴通讯股份有限公司 | Management method and system of aggregation link |
| WO2012068834A1 (en) * | 2010-11-25 | 2012-05-31 | 中兴通讯股份有限公司 | Method and system for managing aggregation link |
| CN102480377B (en) * | 2010-11-25 | 2015-05-20 | 中兴通讯股份有限公司 | Management method and system of aggregation link |
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